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Alternative Urban Areawide Review Audit (AUAR) 1998
ADMINISTRATION CITY Of, STILLWATER ALTERNATIVE 'URBAN AREAWI D E REVIEW AUDIT Prepared by. Klayton Eckles, Steve Russell City Engineer Community Development Director Diane Ward Sheila McNamara Engineering Secretary Community Development Secretary � T. LLJ rr7 FOOD o J J Engineering Department 216 North Fourth Street Stillwater, MN 55082 Telephone: (612) 430 -8830 Fax: (612) 430 -8810 TABLE OF CONTENTS Introduction Alternative Urban Areawide Review Audit Audit Conclusions Appendix 1. Agency Letters 2. Natural Resource Inventory Proposal 3. McKusick Lake Study Proposal 4. 62"d Street Study 5. Park and Trailway Dedication Policy and Trail Corridor Plan 6. Forest Protection Plan 7. Open Space Committee 8. Street Width Study 9. Planning/Council Conditions of Approval 10. Temperature and Flow Measurements 11. Storm Water Comments 12. AUAR Development Review 13. Shoreland Ordinance (Draft) 14. Wetland Delineation and Wetland Mitigation Plan for the Developments 15. Grading for Residential and Commercial Properties I Introduction to the Alternative Urban Areawide Review Audit In August 1997, the City of Stillwater completed the Alternative Urban Areawide Review ' (AUAR) for the proposed expansion area. The AUAR set forth a plan to respond to potential environmental impacts caused by urbanizing development in the expansion area. Since August 1997 development and construction has begun in this area. Parties responsible for ' implementing the protection strategies listed in the AUAR have been working to carry out these objectives. This audit of the AUAR will document the successes and efforts of the parties responsible for carrying out these objectives. It will also point out some areas where ' additional effort is needed to meet the objectives of the AUAR. J n AUAR stands for Alternative Urban Areawide Review. This review process is alternative because it approved by the Minnesota Environmental Quality Board (EQB) as an alternative to the normal environmental impact statement process. It is urban because the process examines environmental affects and solutions to new urban development. It is areawide because it looks at a complete development area rather than just a site - specific review. Stillwater chose this option of environmental review because significant environmental issues were anticipated in the Stillwater expansion area. The AUAR method of analysis is better able to deal with these issues upfront in a proactive rather than reactive manner. This allows for comprehensive solutions to areawide incremental impacts. This audit is not an attempt to reopen issues, alter strategies, or add new requirements. The AUAR and its Mitigation Plan are an approved and accepted response to environmental issues in the expansion area. It was developed with the input of all the parties that have a stake or interest in managing the development in this area. In essence, the AUAR is a contract whereby the City of Stillwater agrees to carry out the Mitigation Plan. For this Mitigation Plan to be a complete success, other responsible parties and government agencies must do their part to see the Mitigation Plan through. The format of this AUAR audit closely follows the AUAR Mitigation Plan. The Mitigation Plan had 16 goals and 58 strategies for meeting these goals. Some of the strategies were mandatory, some voluntarily; each had at least one (usually more) responsible parties. In most cases, the City of Stillwater was the primary responsible party. The audit will list each goal and strategy of the original Mitigation Plan, and then a synopsis of the actions taken to meet these goals will be listed for each responsible party. For the most part, these responses were developed based on letters from each responsible party listing their activities to date. These letters are attached in the Appendix. Note that these responses were not gathered from those parties that have a very minor role in the process. The next section of the audit is a discussion of strategies needing additional effort. These are broken down into proscriptive and voluntary. The final section of the audit is a group of Appendixes, which includes supporting documentation. � ALTERNATIVE URBAN � AREAWIDE REVIEW � AUDIT 1 1 1 1 1 1 1 1 1 L I ALTERNATIVE URBAN AREA WIDE REVIEW A UDIT Brown's Creek and its Tributaries Brown's Creek and its tributaries within the Annexation Area are classified as Trout Waters (MN Rules 7050.0420). Upper portions of Browns Creek between the Stone Bridge and the St. Croix are considered marginal trout habitat. Brown's Creek has been ranked as one of the six highest priority trout streams in the Metro Region. Brown trout are stocked in the stream at catchable size for recreation purposes. Natural reproduction of trout in the stream is limited. Fishing pressure on the creek is heavy, due to its accessibility to Metro Area anglers, including mobility- restricted anglers. The presence of Brown trout in the stream is an indicator of high water and habitat quality, these conditions also help to support other valuable species and communities that exist in the Browns Creek Ravine. The City of Stillwater has proposed a set of goals and strategies in this section to maintain the ' water quality and hydrologic regime of Brown's Creek, to maintain the health of trout habitat and natural communities in the Ravine as development occurs in the Annexation Area. ' Goal 1: Protect and Maintain the Current Quality of Surface Water Inflows to Brown's Creek. ' PROTECTION STRATEGIES: 1.1. Implement the plan to divert discharge from Long Lake and stormwater runoff ' from the Annexation Area and Grant Township (south of the Minnesota Zephyr railway tracks) to the wetland north of McKusick Lake. Reconfigure the outlet at the north end of Long Lake to maintain the lake at a normal elevation of 889 -890, and direct flows north ' through the existing drainage way to the McKusick wetland. Reconfigure this drainage ditch to a stream channel form, which will be more stable than the ditch. Remove the current dike at the north end of McKissick Lake, and build a new dike at the north end of ' the wetland, to create a basin to hold the entire runoff from the Long Lake and the Annexation Area up to a 2.5 -3.0 inch rainfall event (occurs approximately every 3 years in ' this area). (Monitoring protocol described in #9 below.) City of Stillwater ' • December 1997 the City completed the feasibility study on the McKusick Lake Diversion Plan. ' • The summer of 1998 the City constructed portions of Phase I of-this plan including channel improvements north of the Jackson Wildlife Pond and a portion of the diversion pipe that would divert annexation area flow to Lake McKissick. The City intended to reconstruct the outlet structure for Jackson Wildlife Pond, but this improvement was tabled due to DNR ' concerns and unwillingness to grant the regional permits. 10/29/98 • In October of 1998, the City Council approved an additional study of , McKusick Lake to better quantify impacts and changes in the lake due to the proposed diversion project. • In the fall and winter of 1998, the City will be completing plans and ' specifications for the 72nd Street culvert improvements and improvements in the Jackson Wildlife area to reduce beaver blockage. • If the DNR proceeds with its plan to rerouting the stream through the golf , course the City will work with the DNR on the project. Completion of the stream rerouting would have major benefits in reducing summertime stream temperatures (measurements by DNR staff to 8 ° ' show up of temperature increase as the stream travels through the wetland along McKusick Lake). Completion of the rerouting would answer much of the ' concern raised by DNR regarding phasing. ' DNR , DNR is moving ahead with rerouting of Brown 's Creek through the Oak Glen Golf Course. The current plan would route the creek along the railroad tracks. The DNR has also expressed ' concern regarding the approved phasing plan that was adopted as part of the feasibility study. 1.2. Implement the Stormwater Management Study for the Annexation Area developed ' as a part of the AUAR, that emphasizes the protection of water quality in Brown's Creek, and sets forth criteria for the design and performance of stormwater detention basins to reduce peak flows into McKusick Lake and Brown's Creek. Identify and implement , opportunities for regional stormwater detention basins within the Annexation Area and in surrounding communities that drain through the Annexation Area to Brown's Creek. City of Stillwater • City of Stillwater completed the stormwater management of the annexation ' area and has used it to analyze and review individual developments within the annexation area study (see Appendix "Storm Water Review Comments "). , • The City has worked with developers to design stormwater detention basins, which not only maintain discharge rates at predevelopment levels but also actually reduce peak discharge rates to well below ' predevelopment levels. • The City has sent a letter to the Brown's Creek Watershed District ' requesting that it ensure that neighboring communities control discharge into the annexation area and Brown's Creek at levels which were developed as part of the AUAR stormwater management studies. ' • The City also sent a letter to Oak Park Heights requesting that they require their developers to implement these criteria in their stormwater system design. ' 0 10/29/98 1 ' Brown's Creek Watershed District. Brown's Creek Watershed District has completed the hydraulic and hydrologic study of the ' entire Brown's Creek Watershed. This material will be made available upon acceptance by the BCWD. ' Stillwater Township, surrounding Cities No comment. ' 1.3. Developers should work with the City of Stillwater to identify and implement strategies to infiltrate and detain stormwater to reduce runoff to surface waters and ' increase infiltration. A variety of strategies may be implemented to meet stormwater management goals to protect or improve the quality of runoff to Long Lake, McKusick Lake and Brown's Creek by reducing peak flows from developed areas. Peak discharge ' rates for 2, 10, and 100 -year rainfall occurrence conditions from any development area should be maintained at less than or equal to pre- development conditions. u The City of Stillwater may consider modifications from its Subdivision Ordinance through its design review process for the following: a. Reduce street coverage • Reduce residential (local access) street widths and lengths. Use "T" cul -de -sacs or establish vegetated islands designed to hold stormwater. b. Design and locate buildings to reduce impervious surfaces and retain infiltration areas • Use cluster development that maintains open space and minimizes impervious surfaces. • Reduce front setbacks to reduce driveway length. • Maintain vegetated swales or detention areas between back lot areas to infiltrate and route water. c. Reduce parking areas • Encourage cooperative parking • Use parking standards that reflect average parking needs instead of peak day projections. d. Private developers in the Annexation Area may also chose to implement the following: 10/29/98 • Provide infiltration areas • Use rural road sections without curb and gutter treatments that drain to wet or dry swales. Plant these where possible with native vegetation types. • Identify soils with high infiltration capacities, and cluster development and route , drainage to maintain these as open space areas and infiltrate storm runoff. ' • Use infiltration basins. • Maintain or create detention basins that release water when it has cooled to less , than 65 degrees F ' • Use permeable pipes to transport and exfiltrate stormwater • Direct downspouts from roofs over yards or other vegetated areas and away ' from driveways or paved surfaces , • Use aerators, sand beds, or other cooling strategies to reduce the temperature of runoff or pooled water before it enters Brown's Creek ' • Protect or encourage plantings of native vegetation on public and private ' properties, including woodlands, prairies, and wetlands, to promote stormwater infiltration and provide habitat and aesthetic values. ' City of Stillwater I • Many of the above strategies have been applied to Phase I annexation area development. As part of the preliminary plat review process many ' conditions of approval were included in the review (see Appendix "Conditions of Approval "). In addition, the City's consultant reviewed the plats for compliance with the AUAR Mitigation and supplied comments (see ' Appendix "AUAR Development Reviews "). • As mentioned earlier, peak discharge rates have been significantly reduced from predevelopment conditions. , • The City undertook an analysis of its street widths and worked with emergency response agencies, public works, developers and utility companies to develop new narrower street standards. The standard 32 - ' foot wide street has been reduced. The street widths in Phase I range from 28 feet down to 20 feet in width (see Appendix "Street Width Study "). ' • As a result of this analysis, cul -de -sac sizes have been reduced and vegetative islands have been added to cul de sacs. • Front yard setbacks have been reduced throughout the development area. , • Large conservation / open space easements and buffer strips have been included along lakes and wetlands to increase infiltration. • The construction of three -car garages in the Phase I annexation area will , be limited on small lots through the development review process. • The storage capacity of detention ponds has been increased above typical standards and the discharge pipes reduced in size to detain water and ' promote infiltration. • Developers have been encouraged to consider infiltration basins and the Summerfield Plat design currently includes an infiltration basin along with , a rural road section next to a park. • Developers have been required to use native plantings along wetlands, , ponds and encouraged to plant them on private properties landscape plans. 10/29/98 1 Brown's Creek Watershed District. • Brown's Creek Watershed District indicated they are currently implementing and LCMR ' project at the headwaters of Brown 's Creek that may provide a successful demonstration project which could be applied in areas of the AUAR study. • The BCWD is developing a set of rules and guidelines concerning the best management ' practices that result from the H & H study. Stillwater Township, Private Developers No comment. ' 1.4. Require the use, management and enforcement of Best Management Practices (BMP's) and Wet Stormwater detention basins to control erosion and sedimentation during and after construction of projects in the Annexation Area. ' City of Stillwater ' • The City of Stillwater requires the use of Best Management Practices including oversized NURP ponds for erosion control and water quality ' treatment on all new development projects in the annexation area and areas not in the annexation area. • The City has set up an enforcement program that includes bonding on all ' grading plans with up to $25, 000 bonded for erosion control protection. • Grading escrows are required on all individual building permits (see Appendix "Grading Plan for Residential Lots "). • The institution of a new site plan review procedure on all building permits will identify sensitive lots and add additional requirements for individual lot construction. ' • The City is also exploring opportunities for increasing staffing or cooperating with other agencies to coordinate enforcement of best management practices for erosion control. ' Stillwater Township, MPCA ' No comment. 1.5. Maintain or restore an unmown vegetated buffer at least 100 feet in width upslope ' from the Ordinary High Water mark (O.H.W.) along the corridors of Brown's Creek and its tributaries in areas developed after adoption of the AUAR. A wider buffer zone may be required where needed to protect floodplains, wetlands, steep slopes or important fish and ' wildlife habitat areas. Encourage landowners to plant native trees, shrubs, tall grasses, herbaceous and wetland plants in this buffer strip to increase shading of Browns Creek and tributaries to maintain water temperature for trout habitat. Amend Draft Shoreland Management Ordinance (February, 1997) to include Brown's ' Creek and its Tributaries, including regulations for Vegetation Management, Diseased 1 10/29/98 J Vegetation, Buffer Zones, Fertilizers, Pesticides, and Oak Tree Management. Adopt and I enforce Ordinance, including the Annexation Area. City of Stillwater I A draft amendment to the Shoreland Ordinance (see Appendix " Shoreland Ordinance ") requiring natural buffer strips and setbacks from wetlands has been I drafted. A copy of the draft has been reviewed and commented on by the DNR. The Planning Commission has set a public hearing for November 9, 1998 on the Ordinance Amendment. ' Stillwater Township No comment. ' 1.6. Protect and enhance in- stream habitat and riparian trout stream habitat along ' Brown's Creek and its tributaries in areas of existing development, including vegetated buffer areas, groundwater recharge areas, pools, riffles, and other critical components of trout habitat. A continuous stream habitat corridor should be protected along the Creek ' downstream of the Stone Bridge. City of Stillwater ' • Zoning regulation that restricts activity within a 200 buffer area protects ' Browns Creek and its tributaries located in the City of Stillwater. • The corridor habitat area is protected continuously from it confluence with the St. Croix upstream to the Stone Bridge and beyond. Zoning ' Ordinances to protect the corridor include the shoreland ordinance, conservation regulations, and generally more the subdivision regulations. • A park, open space trails and greenways plan designates areas for ' protection and park use has been approved by the Open Space Committee and Parks Board. Trout Unlimited , • Trout Unlimited received a $5,000 grant from its headquarters in 1998. Work was ' completed on June 13 and 17 to plant tree shrubs and flowering plants to help provide cover and food sources and improve the trout habitat along a stretch of Brown's Creek within the boundaries of the Oak Glen Golf Course. An additional purpose of this work ' was to help provide bank stabilization for an anticipated increase sediment loads when construction of the rechanneling project occurs up- stream. In addition, informational signs about the project were placed along the golf course pathways to help inform the ' public about the significance of the stream project. • Trout Unlimited volunteers also assisted the DNR on August 12 to help provide bank stabilization in the lower ravine section downstream of the Stone Arch Bridge. ' 10/29/98 1 0 0 0 I I iJ Stillwater Township, DNR No comment. 1.7. Develop and conduct annual educational programs for local residents on the value of natural resources in the area, the effects of yard care practices on these resources, and options for homeowners to assist in protecting resource quality. City of Stillwater • The City has begun several avenues of educating the general public, lakeshore property owners and new residents in the annexation area. The City has and will continue to publish articles in the City Newsletter covering topics such as lawn fertilizing practices, management and protection of wooded areas, native species tree planting and native prairie plantings (see Appendix "Education Materials "). • The City has required that the developers provide new lot owners with educational materials regarding the management of conservation areas and proper lawn care. Trout Unlimited • Trout Unlimited has committed to donate $10, 000 and become a supporting sponsor of the 1998 Bell Live Aquatic Adventure Program. This is an educational program for grades four through eight. TCTU Chapter members have helped prepare and review the classroom curriculum and will provide assistance during the programs to help teach students about stream ecology habitat and lifecycle of trout. • Trout Unlimited is currently working on the design of a brochure for general distribution to homeowners and the public which will contain information concerning recommended planting for backyards adjacent to streams, how to use lawn fertilizers and other important environmental concerns. Trout Unlimited also offers its services in encouraging the use of native grass seeds, working with developers and other government organizations to help educate property owners and implement such a program. Trout Unlimited also intends to install additional signs along various sections of the stream to inform the general public about work being done. Long Lake Homeowners Association: The Long Lake Homeowners Association has several ideas on how to encourage residents to maintain - restore shoreline buffers, install native plantings and landscaping and use fertilizer wisely. Long Lake Homeowners Association offers to include educational materials in its four newsletters that are distributed each year. Long Lake Homeowners Association would propose meeting with City staff to discuss ideas regarding education and distribution of printed educational materials. Washington SWCD • SWCD staff gave a wildlife habitat improvement program presentation in April. 1 10/29/98 • SWCD coordinated two watershed workshops. • Facilitated a talk with Stillwater Garden Club. Public Interest Groups, University of Minnesota Extension Service ' No Comment 1.8. The City should work with Washington County and the Minnesota Department of Transportation as plans are completed for alteration of State Highway 36 and County Highways 15 and 96, to identify potential water quality and quantity impacts to Brown's Creek and impacts to other natural resources, and develop strategies to avoid or mitigate these impacts. t City of Stillwater sampled for water temperature and flow data. In addition, macroinvertebrate samples will be gathered and analyzed in for 2 locations, at the upper and lower ends of the Creek. ' Since the time of the completion of the AUAR, Mn /Dot and the County have not moved forward with any plans for any highway improvements in the area and therefore no action has been taken on this item. Next year Washington County ' will be making road improvements at the County Road 12115 intersection. The City will work with Washington County, Grant City and Stillwater Township to cooperatively address stormwater issues. ' Washington County, Mn /DOT , No Comment 1.9. Implement a water quality monitoring program, including water temperature, dissolved oxygen, water quality and quantity parameters, in accordance with Minnesota Pollution Control Agency (MPCA) and Metropolitan Council water quality monitoring guidelines, as specified in Minnesota Lake & Stream and Watershed Data Collection Manual (MPCA 1994) and An Evaluation of Lake and Stream Monitoring Pro0rams in the Twin Cities Metropolitan Area (Metropolitan Council 1989). Monitoring tations will be laced in the following locations: 1 lower end of Brown's Creek g P g ) where it meets the St. Croix; 2) near the Stone Arch Bridge; 3) near Neal Avenue and the railroad tracks; 4) at County Road 15, 5) on the stream tributaries west of McKusick Lake; t and 6) at the Long Lake outlet. Beginning in spring, 1997, these stations will be regularly sampled for water temperature and flow data. In addition, macroinvertebrate samples will be gathered and analyzed in for 2 locations, at the upper and lower ends of the Creek. , Samples will be taken three times during the summer. Automatic monitoring stations at the Stonebridge and the lower end of Brown's-Creek will also collect a variety of water quality data. The Washington Soil and Water Conservation District (acting as the Browns Creek WMO) will collect and analyze the results of monitoring on Brown's Creek, and report the results of monitoring to the City of Stillwater, Metropolitan Council, resource management agencies, and other interested organizations. , 10/29/98 1 ' The Science Museum of Minnesota and other partners are developing a proposal for short and long -term monitoring and data analysis of the Brown's Creek Watershed, including the Annexation Area, to include additional ' City of Stillwater: ' The City of Stillwater has continued to monitor temperature and flow rates at three locations. The temperature data has been provided to the SWCD, the DNR and Trout Unlimited on an annual basis (see Appendix "Temperature and Flow ' Data "). DNR ' • The DNR continues to monitor stage discharge g g and temperature at one station. DNR officials have installed four permanent data loggers that provide temperature monitoring ' every 15 minutes. 0 In addition, the DNR is working on a Rosgen Classification to assess stream channel conditions. 0 DNR has partnered with other public and private groups to accomplish a dye study to measure movement and time of travel. ' a DNR is also leading a macro invertebrates study over the past two seasons. Trout Unlimited Purchased three temperature monitors to be placed along with others in strategic locations through Brown's Creek Watershed. These monitors are being used by the City of Stillwater to gather data. Trout Unlimited also provided partial funding for the SWCD monitoring station ' located at the lower end of Brown's Creek. Trout Unlimited also would consider funding for other monitoring efforts that come before it. Washington SWCD • SWCD maintained the outlet monitoring station at the mouth of the creek. This station ' continuously records flow, temperature, dissolved oxygen, and conductivity throughout the year. Grab samples were obtained in 1998 for nutrient load analysis. g • Temperature and flow were measured and recorded every two weeks at all of the major road crossings over Browns Creek. Biweekly water levels were recorded in 16 lakes and wetlands within the City of Stillwater and the Browns Creek watershed. ' • Three additional rain gages were set in the watershed. • Lake water quality monitoring was done 14 times over the growing season. The lakes monitored include: Long, Lily, McKusick, North and South Twin Lakes, South School Section lake and the Kismet basin. St Croix Research Station- Science Museum of Minnesota ' A set of monitoring stations is under construction by the St. Croix Research Station that will greatly increase the amount of data available for analysis. 1 10/29/98 i Met Council, MPCA, Stillwater High School Science Classes i No Comment 1.10 Encourage the development of a Comprehensive Watershed Management Plan for i the Brown's Creek Watershed that models conditions in the Watershed at full development; identifies issues and problems for water and other natural resources in the Watershed based on this analysis; and identifies goals, strategies and responsibilities for addressing these issues and problems. Brown's Creek Watershed District. i The watershed district has been formed, has completed a timeline for developing a second- i generation watershed management plan. As part of that, a citizens advisory committee of eleven members has been formed to assist in developing the plan. BCWB is currently drafted a RFP at this time to identify and contract with a consulting firm for the actual preparation of the plan. i DNR The DNR has been working closely with the watershed district on the Hand H study. The DNR i staff has provided training to the new board and its citizen advisory committee. DNR staff also serves on the technology advisory committee currently drafting new rules and regulations. Stillwater Township No Comment i Goal 2: Maintain or improve the quantity and quality of groundwater i discharges to protect the baseflow of Brown's Creek. PROTECTION STRATEGIES: i 2.1. Locate the new municipal well proposed for the Annexation Area outside the Area I determined to affect groundwater flows to Brown's Creek. City of Stillwater ' The City of Stillwater has been working with developers on the Phase I annexation area to locate a well that will meet the demands of the area and i avoid impact on ground water flow to Browns Creek. A potential site has been located which meets these criteria located just west of Rutherford Elementary School. Upon completion of the final platting process for the Liberty subdivision, the Stillwater Water Board will begin the process of locating a test well. DNR The DNR states that it has not been contacted by the City of Stillwater for advice in locating a new municipal well. ' 10/29/98 1 ' 2.2. Encourage abandonment of private wells in the Annexation Area. Well abandonment will be implemented in accordance with procedures of the Minnesota ' Department of Health. City of Stillwater ' The City has an ordinance in place, which re qu ires property owners to hook up to municipal water, as it becomes available. This ordinance is softened to some ' extent for the large lot property owners in the annexation area who have functioning safe wells. ' 2.3. Promote a "no- net - loss" of groundwater recharge capabilities for the recharge area of aquifers discharging to Brown's Creek and its tributaries. Implement the strategies listed in Section 2.0, Goal 1, Strategy #3, to decrease the proportion of impervious surface area, add buffer zones and retention basins, and use other strategies to increase rainfall infiltration in the Annexation Area to maintain groundwater flows to Brown's Creek. City of Stillwater • See Goal 1, Strategy 3 for a response on this strategy. • In order to maintain ground water flows to Browns Creek the proposed municipal well to serve the expansion area will be located outside of the impact zone of Browns Creek. A tentative location that the City is looking to install an exploration well is located south of County Road 12, west of Rutherford Elementary. ' Washington SWCD The SWCD provided assistance to the BCWD with the development of rules that promotes buffers, less impervious surface and infiltration. ' Developers No Comment 2.4. Complete field surveys to identify shallow groundwater areas before utilities are constructed near Brown's Creek or its tributaries. Avoid construction of utilities in close proximity to the creek, its tributaries, and wetlands in the Annexation Area when feasible. City of Stillwater Before Be ,f final design o ,fi g n Phase I trunk utilities the City obtained soil borings. These borings indicated that the proposed location for the trunk sewer line would be difficult to construct in some areas and would have significant impacts on the area. Therefore, the location of the trunk sewer line for phase I was altered in ' some areas to avoid wetlands, high water ground tables and poor soils. 1 10/29/98 Washington County SWCD The SWCD worked with the contractors, during the trunk utility construction, to monitor and measure stream base flows during site dewatering of the utility trenches. 2.5. When utility construction near streams and wetlands is necessary, require use of trench dams or other barriers, and backfilling of utility trenches with native material near Browns Creek and its tributaries to prevent drainage of shallow groundwater in the area. City of Stillwater To date for the most part the trunk utility construction and the construction of developer improvements has avoided proximity to wetlands and streams. 2.6. Encourage owners of the Oak Glen golf course to discontinue using ground water wells for irrigation, and explore the feasibility of replacing this source with water from the McKusick wetland. This may protect groundwater sources as, well as increase the storage potential of McKusick Lake. City of Stillwater The City of Stillwater has not yet talked to Oak Glen Golf Course about changing their irrigation system. However, apparently Trout Unlimited has talked to Oak Glen Golf Course and the initial response was somewhat positive. It appears the best time to implement this strategy would be in conjunction with Phase III of the Diversion Project that would flood the wetland and connect it with Lake McKusick. As negotiations continue with Oak Glen Golf Course concerning rerouting of the creek and expansion of the wetland along McKusick this issue will be discussed further. 2.7. Implement a groundwater- monitoring program within the Annexation Area. City of Stillwater The City of Stillwater will be able to provide some monitoring when the new municipal well is installed and on -line. As this issue falls outside the expertise of the City of Stillwater and crosses community boundaries, Stillwater looks for leadership on the part of Browns Creek Watershed District or the DNR to move this strategy forward. Washington County /Browns Creek Watershed District No Comment 10/29/98 H P_,1 Natural Areas in the Annexation Area The majority of high - quality natural areas that may be affected by urban development in the Annexation Area are located within the Brown's Creek Ravine. The lower one mile of Brown's Creek in the N 1/2 Sections 20 and 21, T30N, R20W, is a biologically significant ravine /creek system, based on information collected by the Minnesota County Biological Survey. The Survey noted that less than 6 percent of the land area of Washington County remained in high quality natural communities in 1991. Three natural communities occur within this system -a high - quality maple- basswood forest, mixed hardwood swamp, and moderate quality bluff prairie. Breeding and foraging habitat of the Louisiana water thrush (Seiurus motacilla), a special concern species, is also documented in this area. While all of these rare feature elements occur outside the Annexation Area, potential impacts from stormwater discharges to Brown's Creek and other development - related impacts could affect the quality of natural communities and habitat areas in the Ravine. The Louisiana water thrush is particularly sensitive to increased flows from stormwater because the bird nests and feeds along the stream bank near the stream's normal water level. Increased flows may inundate nesting and/or critical feeding areas. Changes in surface and groundwater quality and quantity with increased development may also affect the viability and quality of hardwood seepage swamp communities. An additional natural community of concern is an oak forest located along the west shore of ' Long Lake, in the West 1/2 of Section 3 1, T30N, R 20W. This oak forest community was also identified by the Minnesota County Biological Survey in 1990. In 1995, this area was surveyed more intensively. This survey suggested that the highest quality forest remains in the eastern areas of the woodland near Long Lake, while western areas have been severely degraded by invasion of exotic species. Development of sewers, roads and residential subdivisions may affect the quality of this natural community. The City of Stillwater has proposed goals and strategies in this section to protect and restore natural communities in the Brown's Creek Ravine, while developing opportunities for passive recreation that are compatible with the long -term health of these communities. The section also includes goals for managing oak forest communities, and mitigating for losses that may occur with development of the Annexation Area. Goal 3: Maintain or restore the quality of Brown's Creek and the Ravine Area, including sustaining the health of the Louisiana water thrush habitat and trout habitat, and maintain or restore native plant communities. PROTECTION STRATEGIES: 3.1. Implement the stormwater diversion to McKusick Lake, Stormwater Management Plan, infiltration strategies, other BMP's, and monitoring strategies described under Goal #1, strategies 1- 8, to maintain the current quality and quantity of stormwater flowing to the Ravine from the Annexation Area, to maintain the Louisiana water thrush habitat and hardwood seepage swamp communities. 1 10/29/98 City of Stillwater See Goal 1 3.2. Implement Stillwater's Shoreland/Bluffland Management Ordinance and Restrictive Soils Ordinance to protect the Ravine, and encourage vegetated buffer strips with required 40' setbacks from the bluff line to protect the natural slopes in the Ravine. City of Stillwater. The following city ordinance protect the ravine area from development; Bluffland Shoreland Ordinance (require 40 foot setback from bluff areas and restricts development on slopes 12% or greater). Conservation regulations (require 40 foot setback from sloped areas 25% or greater); Shoreland Ordinance (require 200 foot buffer from creek). The ordinances are applied and implemented when development is proposed. 3.3. Work with the Minnesota DNR's Natural Heritage Program and Fisheries Division to develop a restoration and management plan for the Brown's Creek Ravine, including Louisiana water thrush and trout habitat and native plant communities that are part of the Ravine complex. Adopt the plan as a part of the City's Parks and Open Space Plans. City of Stillwater. The ravine area has been designated a greenway corridor. Work is scheduled to begin on a ravine restoration / management plan in the spring of 1999 as time is available from Heritage Program staff. The study would be coordinated by the City of Stillwater with DNR, Heritage Program staff, Stillwater Township and property owner involvement. Most of the ravine area is located in Stillwater Township and controlled by a protective conservation zoning designation. The remainder of the ravine is owned by public agencies (Mn /DOT, DNR - see attached map). This is not a high priority work item based on property ownership, existing protection and lack of jurisdiction to implement management measures. DNR The DNR has not yet been involved in the development of such a plan. The DNR will participate in such develop within available funding and staffing constraints. Goal 4: 10/29/98 Provide passive recreation opportunities that are compatible with the high quality natural resources in the Brown's Creek Ravine Area. PROTECTION STRATEGIES: ' 4.1. Implement Stillwater's Trails and Pathways Corridors Plan, including development of a pedestrian path on one side of Brown's Creek within the Ravine. Work with the Minnesota DNR Natural Heritage Program to locate and design the trail to avoid fragmentation, disturbance and degradation of the native plant communities and Louisiana water thrush habitat in the ravine. Work with the Minnesota DNR Division of Fisheries to design a trail that is compatible with trout fishing activities and Angler Easements in the ' corridor. Restrict foot traffic in the Ravine to the designated trail, to discourage erosion occurring on slopes near the Stone Bridge and elsewhere in the Ravine. ' City of Stillwater ' • City adopted a trail plan (see Appendix "Trail Corridor Plan "). Also, the City Park and Trail Dedication Policy apply (see Appendix "Park and Trail Dedication Policy "). ' • The restoration/ management plan for the ravine area called for in 3.3 above will include consideration of a trail along one side of Browns Creek ' ravine. Although DNR and Mn /DOT own parcels located in the City of Stillwater, most of the creek side property is privately owned and easements would need to be obtained and permission from Stillwater Township granted before any trail construction could begin. A DNR trail grant may provide funding for a Browns Creek ravine trail. ' DNR No Comment i Goal 5. Implement Stillwater's Forest Protection Ordinance and encourage management, protection, and restoration of woodland resources in the Annexation Area to provide functions such as stormwater infiltration, wildlife habitat, and climatic amelioration. PROTECTION STRATEGIES• 5.1. Implement Stillwater's Forest Protection Ordinance in the Annexation Area, requiring protection or mitigation of forest resources affected by development activities. Add standard Oak Wilt Protection Provisions to this Ordinance. (These provisions should require that existing oak wilt be controlled before construction begins. Oak trees [including exposed roots in trenches] should not be cut, pruned or injured between April 15 and July I of each year. If injury occurs during these months, wounds must be treated with a tree wound dressing within 15 minutes or less to reduce infection potential. A vibratory plow should be used to sever roots along the edge of any construction area prior to beginning work. Tree protection zones should be fenced during construction to prevent all entry.) 10/29/98 City of Stillwater • The City recently hired a forester to help implement the City's existing forest protection ordinance and review it for improvements. , • An Open Space Committee has been formed with one of its objectives to identify high - quality woodlands for possible preservation strategies (see Appendix "Open Space Committee "). ' • New developments are required to supply the City with a forest protection plan which includes avoid, minimize and mitigation for tree damage, oak , wilt protection and native tree planting programs (see Appendix "Forest Protection Plans "). DNR handouts on native and desirable tree species for this area were used to evaluate plant lists. ' • The recent two developments which included work near and in an oak woodland were restricted from cutting any trees in that area in the time frame of April 15 to July 1. ' DNR The DNR ' is not aware of any discussions between the City and the DNR regarding forest protection ordinance. The DNR forestry staff should be contacted for assistance. 5.2. ' Enforce Stillwater's Restrictive Soils Ordinance and Draft Shoreland Management Ordinance to protect Oak Woodland areas adjacent to Long Lake and on steep slopes within the proposed development area. City of Stillwater • The City Restrictive Soils Ordinance and Shoreland Ordinance was used to review Phase I expansion and development along Long Lake. The city is ' currently updating the Shoreland Ordinance. • A new Tree Preservation Ordinance will provide additional tree protection. 5.3. Require developers in the woodland area to complete Forest Management Plans that indicate areas where development will occur, and identify management strategies to protect the health and function of oak woodlands and mitigate for losses that occur due to ' development. The Minnesota DNR Forestry Division or certified private foresters may be consulted for assistance in developing management plans. City of Stillwater ' Developers along the woodland were required to provide forest management ' plans prepared by foresters. These included replanting programs of native species and a boulevard tree planting program (see Appendix "Forest Protection Plans "). Developers No Comment 10/29/98 1 5.4. Encourage use of native or "naturalized" landscaping by homeowners in the Annexation Area, to provide greater stormwater infiltration and more diverse wildlife habitat, and replace some of the functions provided by the pre - development oak woodland. Encourage developers to use native plants and naturalized plantings around stormwater ponds in developed areas. City of Stillwater • Developers have been encouraged and required to use native plantings in a number of areas including boulevard trees and ground cover around stormwater ponds. • Every property bordering the buffer zones will have marker posts with information concerning conservation areas and natural easements. • In the future, the City will encourage individual homeowners to use native landscaping by including it in city newsletters and homeowners purchase notification information. Homeowners, Developers No Comment Goal 6: Identify potential wildlife and recreation corridors, parks and open space areas, and adopt plans and development strategies for these areas. Include significant natural community areas in these corridors and open space areas, and use corridors to create connections between these areas. PROTECTION STRATEGIES: 6.1. Implement goals and policies of the Stillwater Comprehensive Plan, Subdivision Ordinance No. 837, and provisions of Resolution 96 -242, including goals to complete development of parks and trails plans for the city, and implementation of these plans through application of these ordinances as the Annexation Area is developed. This plan should identify remaining native plant communities, important habitat areas, other natural areas, and corridor linkages among these, and propose management plans for these areas, including trails and recreation areas where these are appropriate without compromising the quality of significant native communities and habitats. The City should work with the DNR Division of Wildlife and others as appropriate to design and implement an effective corridor system. City of Stillwater A natural corridor plan comprised of greenways, trails and open space areas has ' been prepared and approved by the City of Stillwater. The Open Space Committee, Parks Board, Joint Stillwater Planning Board and Planning Commission have approved the plan. The Corridor Plan locates trails, recreation ' and nature, open space greenways and parks. The greenways and trail corridors link park and open space areas. DNR was given the plan for comment ' 10/29/98 in August, 1998. The plan has been used as a basis for obtaining trail and open space /park dedication when projects are proposed for development. This has occurred in three projects to date. The plan provides for a greenbelt along "Washington Parkway" (Manning Avenue) with trail and tree planting. 6.2. Coordinate activities to identify natural areas, wildlife corridors and recreation corridors with greenway corridor planning at the Minnesota DNR, Land Stewardship Project, and Washington County. City of Stillwater The recently created Open Space Committee will identify natural areas for potential open space (see Appendix "Open Space Committee "). The City has also recently developed a proposed recreation trail corridor system that would tie in with potential greenway corridors (see Appendix "Trail Corridor Plan "). F Both the DNR and Washington County have greenway type protection efforts that are being implemented. Stillwater has not yet contacted DNR's greenways and natural area coordinator about such an effort. The DNR's program is just getting underway. The City should contact our coordinator. Land Stewardship Project, Washington County No Comment 6.3. Map significant natural areas, woodland communities, corridor areas, etc. in the City's Geographic Information System. Use development reviews to provide information and direction to developers to use clustering, open space dedication, development design, and other methods to protect these areas. City of Stillwater • Starting in June 1998, the City hired an intern to begin mapping significant natural areas and potential trailway /greenway corridors on the City's GIS system. • Upon completion, this information will be used to direct and encourage developers and developments to use clustering and open space dedication to protect these areas. • The City has also required dedication of conservation easements, wetland, lake and stream buffer zones and passive park areas to protect open space. • As part of the preparation for Phase II of the expansion area, the City has begun a natural resource inventory for Phase II to identify valuable resources (see Appendix "Natural Resource Inventory', "Trail Corridor Plan "). 10/29/98 ' Long Lake, McKissick Lake, South Twin Lake, and St. Croix River These lakes are all located within, or receive direct drainage from, the annexation area. The DNR ' classifies South Twin and Long Lake as winter kill lakes, while McKusick Lake is classified as a waterfowl lake, and is too shallow to support game fish populations. South Twin Lake is located in the Silver Creek Watershed. ' Long Lake outlets to Brown's s Creek, and is currently experiencing water quantity and quality problems related to runoff from its drainage area. Most of these problems are generated outside ' the Annexation Area. A DNR permit that restricts flow from May to September, to prevent the flow of warm water to Brown's Creek governs the outlet at the north end of the lake. However, the outlet currently flows year- round, in violation of the permit, to prevent flooding of homes ' near the lake. Analysis of impacts of development in the Annexation Area indicates that this development will have little noticeable impact on the water quality and quantity status of Long Lake. ' The City of Stillwater has proposed goals and strategies es in this section to alleviate current flooding problems on Long Lake, while maintaining or improving the water quality of Long ' Lake, McKusick Lake and the St. Croix River as the Annexation Area develops. The section also proposes adoption of stormwater management strategies for the area draining to South Twin Lake. Goal 7: Prevent future flooding and protect or improve the water quality of Long Lake. PROTECTION STRATEGIES: ' 7.1. Replace the current outlet structure on Long Lake with a new structure that maintains a normal lake level of 890.0 feet, and diverts flows above this level through the ' current tributary channel to McKusick Lake. City of Stillwater ' 0 First phase of City's trunk utility project in y y p � tended to correct the control structure on Jackson Wildlife Pond that contributes to the Long Lake ' system being maintained at a high elevation. However, the DNR has indicated they will not give a permit for this work unless the City alters the ' sequencing of the mitigation plan. • Summer of 1999 the City contemplates making improvements to the 72nd culvert crossings and the Jackson Wildlife Pond beaver obstructions ' pending approval by the DNR. 7.2. Evaluate methods for improving water quality in Long Lake, including outlet ' improvements, removal of sediments collected at the south end of the Long Lake, planting native aquatic vegetation, and others. Use native vegetation when possible to aid in cleaning sediments and nutrients from lake water, and to improve fish and wildlife habitat. ' Consider remedial plans for developed areas draining to Long Lake to improve water quality that address modifications to the current system. 1 10/29/98 City of Stillwater The City is currently concluding a study of the 62nd Street Area at the south end of Long Lake. In addition to examining the land use issues, the study is also examining methods of improving water quality by controlling discharges at the south end of Long Lake. This study has identified potential storm pipe improvements, potential additional ponding locations, and a proposal for dredging a portion of the south end of the lake and areas of future water quality study. This study is anticipated to be adopted by the City Council in November. The City recently sent a letter to Oak Park Heights as well as Brown's Creek Watershed District regarding the concern of potential discharges from other cities into Long Lake in the annexation area. To date the City has not received any response regarding these comments. A discussion with Long Lake Homeowner's Association Chair, Lauri Maher, has yielded options for educating existing property owners regarding revegetating of manicured shorelines. Brown's Creek Watershed District Brown's Creek Watershed District has supported monitoring of water quality on Long Lake. As the Brown's Creek Watershed District rules are developed, the Brown's Creek Watershed District will become in permitting and policing of water quality impacts. 7.3. Work with neighboring jurisdictions upstream from Long Lake and the Annexation Area, to ensure that proper safeguard are implemented to protect the quality of Long Lake and other surface waters. Browns Creek Watershed District Brown's Creek Watershed District rules have been completed, they will apply to all jurisdictions. Brown's Creek Watershed District will take a very active role in the communication process with adjacent jurisdictions. 7.4. Complete integrated water quality management plans for lakes in the Annexation Area. City of Stillwater On October 6, 1998, the City Council approved the undertaking of a water quality study and management plan for McKissick Lake (see Appendix ". McKusick Lake Study Proposal "). It is anticipated that this study will be completed within about six months and could lead to management plans for all lakes in the City. 10/29/98 ' Brown's Creek Watershed District The second - generation plan is a critical step in the issue of integrated water quality management ' plan. The Brown's Creek Watershed District is responsible for this plan and has begun its development. The target date for final document is June 2000. ' 7.5. Consider establishment of adequate public access to Long Lake, as this make increase eligibility for funding sources to improve water quality. ' City of Stillwater As part of the Phase I development review, the City identified the southwest end ' of Long Lake near 62nd Street as a potential site of a limited public access point to Long Lake. A parking area, trail, and City parkland are slated for this area. If this plan goes forward, it would probably result in a canoe access or walk -in ' access. Goal 8: Assure that solutions to Long Lake high water problems do not ' degrade the water quality of McKusick Lake, Brown's Creek or the St. Croix River. PROTECTION STRATEGIES: 8.1. Implement the diversion strategy from Long Lake to McKissick Lake described in 2.0, Goal 1, No. 1. Allow sediment from Long Lake and the Annexation Area to settle along the stream channel and in the wetlands north of McKusick Lake. ' City of Stillwater tLimited portions of the diversion strategy have already been implemented including installation of a portion of the diversion pipe and improving of the stream channel north of Long Lake. ' 8.2. Require the use management, g and enforcement of Best Management Practices (BMP's) and wet stormwater detention basins to control erosion and sedimentation during ' and after construction of projects in the Annexation Area, to prevent sedimentation to Brown's Creek, the St. Croix River, and other resources. ' City of Stillwater • The City does require and enforce the use of best management practices and wet detention basins to control erosion and sediment. • The Walker Pondnet Model is used to size NURP ponds plus a 25% increase is added to allow for construction sediment. • Over the course of the year, there have been no serious erosion issues that have occurred in the annexation area. 1 10/29/98 MPCA I No Comment , 8.3. Implement City water surface use policies to minimize recreational impacts to water quality and habitat in the Long Lake area. ' City of Stillwater In the past year, the City has adopted a surface water use policy on Long Lake ' that restricts the size of outboard motors on the lake. Also, the City has made a determination that no full scale motor boat access will be provided to Long Lake. , Recreationists No Comment 8.4. Encourage lakeshore residents to maintain or restore a buffer of native vegetation to ' reduce erosion and provide wildlife habitat. City of Stillwater ' All new developments will have a buffer strip along lakeshore. However, existing homeowners do not have this requirement. Therefore the City will be working , with Long Lake Homeowners Association to develop guidelines for homeowners to promote native vegetation. Lakeshore Owners No Comment 8.5. Consider a City ordinance limiting the use of lawn fertilizers containing phosphorus and educate residents about yard care practices to protect surface water quality. , City of Stillwater ' The City has considered adopting an ordinance prohibiting or limiting the use of lawn fertilizers containing phosphorus. However, due to the difficulty in ' enforcement and dealing with the multitude of lawn care companies, it was deemed impractical at this time. Instead, the City will pursue the alternative of educating residents about yard care practices through the newsletter and ' newspaper articles (see Appendix "Education Materials "). Long Lake Homowners Association ' No Comment 10/29/98 1 ' Goal 9: Protect the water quality of South Twin Lake. PROTECTION STRATEGIES: ' 9.1. Implement the Stormwater Management Study for the Annexation Area developed as a part of the AUAR, including recommendations for the area north of the Minnesota Zephyr railroad tracks that drains to South Twin Lake. This study sets forth recommendations for the design and performance of stormwater detention basins to reduce peak flows and protect water quality in South Twin Lake. ' Cit y o f Stillwater ' No action to date because no development will occur in this area for several years. ' 9.2. Require developers in the Annexation Area that flows to South Twin Lake to infiltrate and detain stormwater runoff using the methods described in Section 2.0, Goal 1, ' Strategy 3. City of Stillwater No action to date because no development will occur in this area for several years. ' Brown's Creek Watershed District ' As stated previously the new Browns Creek Watershed District rules will be in place shortly and the Browns Creek Watershed District will become involved in the permitting and policing process. ' 9.3. Adopt the City's proposed Shoreland Management Ordinance, including provisions for vegetative buffers, fertilizer and lawn care management, and other provisions that ' protect lake water quality. City of Stillwater ' No action to date because no development will occur in this area or several p f years and this area is not yet part of the City. Infrastructure ' Goal 10: Complete development of infrastructure for the Annexation Area (including sanitary sewer, water supply, and street systems) that ' is efficient, economical, and minimizes or mitigates impacts to the environment. ' 10/29/98 PROTECTION STRATEGIES• 10.1. Complete the feasibility study for sanitary sewer service to be constructed in the ' Annexation Area. Identify alternatives that avoid and/or mitigate for impacts to groundwater, wetlands, native plant communities, and surface water resources. City of Stillwater , The City completed a feasibility study and altered the original design to avoid , impacts to ground water, wetlands, native plant communities, and surface water resources. Phase I of the trunk utilities project has successfully been completed with little or no impacts to these resources. ' DNR The DNR assisted the contractors to the best o their ability during the utility work. We think the , f ty g ty utility projects, for the most part, were successfully completed with only occasional minor sedimentation events. , MPCA No Comment 10.2. Complete field survey to identify shallow groundwater areas and implement ' Strategies to avoid these areas or prevent drainage of groundwater near Brown's Creek and its tributaries, as specified in Goal 2, Strategies 5 &6. City of Stillwater As part of the Phase I Trunk Utility feasibility study the City did complete soil borings that identified poor soils and high - ground water tables. These soil borings were instrumental in modifying the City's proposed design for trunk , utilities. 10.3. Encourage development of streets and roadways to minimize impervious surfaces and route stormwater flows to pervious areas and detention basins, minimize stormwater runoff to wetlands, creeks and lakes, and provide for recreation and natural corridors that connect resources and open spaces in the Annexation Area. City of Stillwater The City undertook an extensive stud o street design in cold weather ' y f 9 climates including afield trip to Rochester, New York (see Appendix " Street Width Study "). Based on this study the City came to the conclusion , that under certain development conditions the standard 32 foot wide street could be reduced to 281 24 and, in some cases, 20 feet. 10/29/98 1 ' The City has also explored opportunities for constructing streets without gutters. The proposed Summerfield Development currently proposes a section of street without gutters and an infiltration swale in its place. ' A trial corridor study has also been completed which would connect resources and open spaces (see Appendix 'Trail Corridor Plan "). Washington County, Mn /DOT No Comment Wetlands Wetlands in the annexation area are significant for local hydrology and wildlife habitat. The ' National Wetlands Inventory identified 82 wetlands (approximately 287 acres) in the study area. Wetlands in the Jackson Wildlife Management Area (WMA) north of Long Lake, and north of ' McKusick Lake, will be impacted by stormwater management strategies suggested in this AUAR. Existing, restored or created wetlands may offer opportunities to mitigate the impacts of urbanization in the Annexation Area, but their function and quality may also be compromised by ' development activities. Construction of infrastructure proposed for the Annexation Area may also impact wetland resources. ' The City of Stillwater administers the Wetland Conservation Act, and is required by law to regulate wetlands in the City. The City will require strict adherence to the rules of the Wetland Conservation Act, and require that a sequencing process be followed during the design and ' construction of all projects. This process requires that wetland impacts be avoided if possible, and that unavoidable impacts be compensated through replacement with wetlands that provide equal functions and values. The City has also proposed completion of a Comprehensive Wetland Management Plan, including a functions and values assessment of wetlands in the community, and development of policies and management strategies to better manage wetlands based on the functions they perform and value to the community. ' Goal 11: Promote a policy of "no- net - loss" of wetland functions and values in the Annexation Area by avoiding and minimizing wetland impacts when ' feasible, and mitigating for unavoidable impacts. Wetland management should be integrated with local water planning, be based on an assessment of functions and values of wetlands in the area, and prioritized based on wetland ' quality. PROTECTION STRATEGIES: ' 11.1. Implement existing wetland protection regulations contained in City ordinances, Watershed Plans, and State and Federal rules. ' 10/29/98 City of Stillwater In the first phase of the annexation area the City has successfully implemented , the existing wetland protection regulations contained in the City ordinances including the Wetland Conservation Act (see Appendix "Wetland Reports). DNR ' The DNR has worked with the City on wetland and lake basin impacts through it permitting ' Processes. In addition, the DNR has been represented on the Brown's Creek Watershed District rule committee to assist with watershed wide planning efforts for all of the water bodies in the district. ' Washington County SWCD The SWCD provided plan review and comments o ' n the Legends Development. U.S. Army Corps of Engineers, MPCA, U.S. EPA ' No Comment 11.2. Complete a Comprehensive ' p nsive Wetland Management Plan for the Annexation Area and the City of Stillwater that meets the requirements of the Board of Water and Soil Resources (BWSR) for such plans, including completion of a functions and values assessment for all wetlands in the community, development of a wetlands classification system, policies, and management recommendations based on this assessment. City of Stillwater The City has yet to complete a comprehensive wetland management plan. However, with the newly formed Open Space Committee this committee could provide impetus for completing this plan. Also the City is looking for , funding sources to complete an overall stormwater management plan for the City which would include a wetland management plan as part of it. At this point the funding is still unavailable. ' Wetland protection has been implemented via site - specific review using wetland delineation studies and mitigation plans (see Appendix "Wetlands Reports "). ' 11.3. Wetland mitigation or replacement that results from development activity in the Annexation Area should be implemented within the Browns Creek Watershed (avoid use of ' Mitigation Banks outside the Watershed). City of Stillwater , To date all wetland mitigation that has taken place (minimal) has been completed within the scope of the individual developments. No replacements have taken , 10/29/98 ' D' ' place outside of the annexation area or outside of Brown's Creek Watershed (see Appendix "Wetland Reports "). ' Brown's Creek Watershed District The Brown's Creek Watershed District rules, which are currently under development as well as ' the second - generation plan, will assist in wetland management. Goal 12: Protect and maintain the quality of surface water flows to ' wetlands. PROTECTION STRATEGIES: ' 12.1. Require the use, management, and enforcement of Best Management Practices (BMP's) and wet stormwater detention basins to control erosion and sedimentation by ' providing pretreatment of water discharged to wetlands during and after construction. City of Stillwater ' This item has been discussed previously. 1 Washington County SWCD The SWCD has reviewed several development plans within the annexation area. Most standard BMP's are shown on the plans, however, there is a lack of enforcement of these requirements during construction. The SWCD has conducted numerous site inspections and recorded some of ' their observations to the City and others. The SWCD has no permit program of its own, but often responds to calls or complaints about construction projects. When the SWCD is on a construction site, they try to accomplish three basic tasks; 1) identify the appropriate BMP's to ' stabilize the site and communicate these items to the contractor, 2) identify which agency(ies) has jurisdiction over the site and potential violations and communicate the problems to those responsible parties, and 3) to look ahead 30 -90 days and try to anticipate problems and identify ' strategies to avoid future violations. 12.2. Promote the maintenance of natural buffer zones of at least 50 feet in width along ' the boundary of wetlands to protect water quality and wildlife habitat as an interim measure until a Comprehensive Wetland Management Plan for the City is completed. Develop and adopt permanent buffer zone recommendations as a part of the ' Comprehensive Wetland Management Plan. City of Stillwater ' The Shoreland Ordinance is currently being amended to include a 200 foot buffer zone along Browns Creek and its tributaries and a 50 foot buffer around ' wetlands. The draft ordinance has been reviewed by the Open Space Committee, Planning Commission and DNR and is scheduled for a public hearing on November 19, 1998. 1 10/29/98 �l Historical and Archaeological Resources I Cultural resources inventory information provided by the Minnesota Historical Society indicated the presence of areas of high and moderate archaeological potential in the Annexation Area. ' These areas include the Stone Bridge site on Brown's Creek. The City of Stillwater will work with developers to identify historical, archaeological, and ' architectural resources in areas with high and moderate archaeological potential, and to preserve these resources to the extent practicable. Goal 13: Identif and r ' Identify preserve historical and archaeological resources in the Annexation Area. ' PROTECTION STRATEGIES: 13.1. Stormwater management strategies described in Section 1.0 Browns Creek and its Tributaries will aid in protecting the Stone Bridge from additional stormwater runoff generated by new development that could degrade the bridge or affect its structure. These ' strategies include diversion of runoff from most storm events away from Brown's Creek, and reduction of storm flows in other events through ponding and infiltration in upstream areas. City of Stillwater Again, the City has started construction o Phase I o the mitigation plan that , f f 9 p at would minimize stormwater,flows to Brown's Creek and therefore protect Stone Bridge. 13.2. Require developers or the City of Stillwater to conduct Phase I archaeological surveys in areas that will be disturbed in the development process, and that have high or ' moderate archaeological potential, as identified by the Minnesota Historical Society. City of Stillwater , No known moderate or high quality archaeological sites are located in the expansion area. ' Developers, State Historic Preservation Office No Comment Other Development Related Issues ' Urban development in the Annexation Area will impact a variety of other concerns, such as , traffic, noise, and air quality. The City of Stillwater will seek to minimize impacts in these areas as appropriate to protect the health, welfare and safety of the public. 10/29/98 1 1 1 Goal 14: Manage Automobile Traffic to Safely Accommodate Development Planned for the Annexation Area PROTECTION STRATEGIES: 14.1. Design and construct local roads to mitigate traffic impacts while meeting natural ' resource protection goals and strategies included in this Plan. City of Stillwater Local roads have been designed to handle traffic demands created by new development, provide emergency access to neighborhoods and protect environmental resources. Washington County and MnDOT should be contacted and informed of environmental protection strategies as these agencies develop plans for expansion and improvement of existing roadways in the area. Washington County, Mn /DOT ' No Comment 14.2. Implement Washington County's Scenic Road Overlay District and Linear Park System Plan, and Stillwater's Parks and Trails Plans as roads are developed in the Annexation Area. ' City of Stillwater ' As part of the platting approval on Phase I annexation developments, the City of Stillwater has required developers to plat outlot areas for future Washington County road improvements and linear park system. ' Washington County ' No Comment Goal 15: Maintain Air Quality in the Annexation Area as Development ' Occurs ' PROTECTION STRATEGIES: 15.1. Enforce State Air Quality Standards to regulate air emissions in the Annexation Area. City of Stillwater ' To date there have been no significant development issues which would have an adverse impact on air quality standards. However, the City will notify the Minnesota Pollution Control Agency if it becomes aware of any such issues. 1 10/29/98 MPCA No Comment 15.2. Implement Best Management Practices to minimize dust during and after construction of developments and infrastructure in the Annexation Area. City of Stillwater To date in the Phase I annexation area no significant problems with dust have occurred. The City currently has regulations that are in effect. These regulations will continue to be applied and enforced. Washington County, Mn /DOT No Comment Goal 16: Minimize Noise Generated by Construction and Traffic in the Annexation Area PROTECTION STRATEGIES: 16.1. Regulate hours when construction may occur to control construction noise. City of Stillwater The City has an ordinance regarding construction- related noise. This ordinance has been enforced throughout construction of the Phase I annexation developments. 16.2. Construct noise berms where needed to control noise associated with road Construction and traffic. City of Stillwater To date no noise berms have been needed to control noise. New developments will suffer some impact from county road highway noise. The impact of this noise will be minimized by use of planting and landscaping along the county road. The developer is working with City staff to design and implement an approved landscape plan. Washington County, Mn /DOT No Comment 10/29/98 ' 16.3. Locate less noise - sensitive land uses adjacent to major roads. City of Stillwater Through the land use planning process, Stillwater Planning Department has and is developing land uses that relate better to a close proximity to major roads. The ' 62nd Street planning study (see Appendix "62nd Street Report") and the preliminary plat approval process have identified the intersection of County 12 and County 15 as compatible with commercial property as well as all the land south of 62nd Street between County 15 and County 5. ' 10/29/98 � AUDIT CONCLUSIONS 1 1 1 1 1 1 1 1 1 1 1 ' AUDIT CONCLUSIONS 1 This audit documents the efforts of various agencies and responsible parties in carrying ' out the 58 strategies listed in the AUAR Mitigation Plan. Upon reviewing these efforts, City staff has concluded that the vast majority of the 58 strategies has been completed or are under way and the goals of the AUAR are being met. There is one area of serious ' concern and a number of areas where additional efforts are warranted. In addition, this audit points out the need for much improved communications between agencies, a better understanding of the AUAR and additional cooperative efforts between agencies. One serious area of concern is the lack of consensus on the completion of the storm water diversion project. The storm water diversion is the heart of the trout stream and lake ' protection plan. The diversion plan feasibility study developed the details of the design and methods of finance. It also laid out a phasing plan based on the technical and financial constraints. The DNR has since raised an issue regarding this phasing ' indicating that the phasing should be reversed. The DNR has denied permits that would allow completion portions of Phase I of the diversion strategy. One further development ' regarding the phasing concerns the DNR's recent efforts to complete a portion of the Phase III project involving rerouting of the stream. Additional discussion needs to take place on this issue and some resolution must be reached on the question of phasing. ' Although the majority of the 58 strategies are being implemented, the audit does show some that some have yet to be completed and additional efforts may be warranted. Some ' of these uncompleted strategies are required, while others are voluntary. Required Strategies Needing Greater Effort 1.4 Require the use and enforcement of erosion control BMPs. ' Stillwater and other agencies have required and enforced the use of BMPs. Still there is some concern has been raised regarding the level of enforcement. ' Stillwater should work with other governing agencies to develop ways to improve enforcement of this strategy. ' 6.3 Natural area mapping. A significant amount of mapping has been completed of natural areas. This effort ' should be continued in order to complete the entire mapping before Phase II and Phase III of the annexation. This will place the City in a stronger position'to work with developers on natural area protection. 7.1 Replace the Long Lake outlet structure. Although the DNR has denied the permit for this work, the City and DNR should discuss this issue further to identify ways to protect Long Lake from flooding and resolve the impasse. 9.1 Protect water quality of South Twin Lake. 9.2 Although the area surrounding South Twin Lake is not scheduled for development for several years, the City could be working on developing standards, performance criteria and requirements for developers working in the Twin Lake area. 11.2 Complete a comprehensive wetlands management plan. The City has not undertaken the completion of this strategy. The City should pursue funding options and possible cooperative efforts that would facilitate completion of this strategy. The Browns Creek Watershed District may provide some assistance in this as part of their Comprehensive Stormwater Management Plan for the watershed. In addition to fulfilling the above requirements to meet some of the strategies listed in the mitigation plan there are some other voluntary actions which can be taken by responsible parties that will help fulfill the overall goals of the AUAR Mitigation Plan. Voluntary Strategies Recommended for Greater Effect 1.3 Developer strategies. This strategy lists a number of options for reducing runoff and treating stormwater. Many of these are in use, but developers could be encouraged to explore opportunities for cooperative parking efforts, modify roof down spouts to run over vegetative areas, consider cooling strategies to reduce runoff temperature, and further encourage plantings of native vegetation on private property. 1.7 Education Programs. A a number of education programs are underway. As the Long Lake Homeowner's Association has indicated, there are additional opportunities for working with lakeshore property owners to develop natural buffer areas and modify lawn care practices. ' This audit was not intended to develop new strategies or goals for protecting natural resources from development impacts. The AUAR Mitigation Plan has been approved and accepted. In completing the AUAR many competing criteria and objectives were ' weighed and balanced in order to achieve a reasonable and workable plan acceptable to all parties. Obviously the plan did not meet everyone's ideal, but it did meet all the requirements. As new players and personalities become involved in this process it must ' be stressed that this is an adopted plan that will hopefully be embraced and implemented by all. 1.10 Encourage development of a water management plan. ' The Browns Creek Watershed District is currently in the initial stages of completing a watershed management plan. Unfortunately under the current ' timeline, completion of this plan is at least two years away. Given the concentration of development that will take place in expansion area and the need to size storm water systems for future development activities in the region, it ' would be highly desirable for the BCWD to complete portions of the plan pertinent to this area first. Discussion of this possibility should be encouraged. ' 2.6 Encourage Oak Glen Golf Course to discontinue ground water use. ' This option has not been fully investigated. A discussion should take place between the City and DNR regarding the viability of this option. If viable, it could be pursued with the golf course. ' 2.7 Implement a ground water monitoring program. The potential benefits and possible scope of such a program are completely ' undefined at this point. Additional discussion should take place between the City, DNR, BCWD, and other interested agencies to discuss the possibilities of this ' strategy. Perhaps the most significant component of the implementation process that has been ' missing is solid communication between all of the interested parties. The need for this audit primarily arose from the lack of communication between agencies regarding actions to date. Hopefully by completing this audit it will generate discussion and improve communication. The recent meetings between the various parties involved could be a ' good start towards the objective of better communication. ' This audit was not intended to develop new strategies or goals for protecting natural resources from development impacts. The AUAR Mitigation Plan has been approved and accepted. In completing the AUAR many competing criteria and objectives were ' weighed and balanced in order to achieve a reasonable and workable plan acceptable to all parties. Obviously the plan did not meet everyone's ideal, but it did meet all the requirements. As new players and personalities become involved in this process it must ' be stressed that this is an adopted plan that will hopefully be embraced and implemented by all. Appendix 1 s 1 1. Agency Letters 1 2. Natural Resource Invento ry Proposal osal 3. McKusick Lake Study Proposal 1 4. 62nd Street Study 5. Park and Trailway Dedication Policy and Trail Corridor Plan 6. Forest Protection Plan ' 7. S Open ace Committee P p 8. Street Width Study 9. Planning/Council Approval annmg /Council:. Conditions o pp 10. Temperature and Flow Measurements 11 Storm Water Comments 1 12. AUAR Development Review 13. Shoreland Ordinance (Draft) ' _14.. Wetland Delineation and Wetland Mitigation Plan for the Developments ' 15. Grading for Residential and Commercial Properties 1 1 1 1 1 0 J I 11 I L I August 21, 1998 RE: Status Report on City of Stillwater AUAR Mr. Klayton H. Eckles, P.E. City Engineer City of Stillwater 216 North Fourth Stillwafe , IviN 55082 Dear Klayton, Our organization is responding to your request dated August 18th, Goal #1: Protection Strategies, paragraphs 6, 7 and 9 on pages 7 and 8 of Appendix B to the Stillwater AUAR Mitigation Plan. Protection Strategy number 6: The Twin Cities Chapter of Trout Unlimited received a $5000 Embrace -A -Stream grant from our national. headquarters in April, 1998. Wort: was completed on June 13 and 17 to plant trees, shrubs and flowering plants to help .provide cover, food sources and improve the trout habitat along a stretch of Brown's Creek within the boundaries of the Oak Glen Golf Course. An additional purpose of this work was to help provide bamk_ stabilization for anticipated, increased sediments Ioads when construction ofthe re- channeling project occurs upstream. In addition, informational signs about the project were placed along the golf course pathways to help inform the public about the significance of the stream and the project. Work was also completed on August 12th by the DNR and Trout Unlimited volunteers to help provide bank stabilization in the lower (Ravine) section downstream of the Stone Arch Bridge. VJe plan to work as a partner with the Department of Natural Resources and other interested parties on future projects to help preserve, protect and restore the habitat for trout on all sections of Brown's Creek where any of our resources can most effectively be utilized. Protection Strategy number 7: The Twin Cities Chapter of Trout unlimited has committed to donate $10,000 and become a supporting sponsor for the 1998 BELL LIVE! Aquatic Adventure Program. This educational program for schools throughout the country, try, grades 4 -8 has been developed by the staff of the Bell Museum of Natural History at the University of Minnesota. TCT'J chapter members have helped prepare and review the classroom curriculum, and our members will provide expert advice during the live, inter- active broadcast of three, one -hour programs on October 22 to help educate students about stream ecology, habitat, and the .life - cycle of trout in a local, 'Washington county trout stream. This program will be free to all Minnesota schools, and TCTU is proud to be an active sponsor of this valuable educational program. We are currently working on the design of a brochure for general distribution to homeowners and the public similar to the one published two years ago for the Eagle Creek watershed. It will contain information concerning recommended plantings for back yards adjacent to streams, how the use of lawn fertilizers will adversely affect the stream habitat, and other important environmental concerns for the preservation of the trout in Brown's Creek, and its tributaries. Our organization would encourage a free backyard, native grass seed program similar to one developed for the homeowners of the Eagle Creek watershed for use on Brown's Creek, and would work with the developers, the city of Stillwater and/or the SWCD to help educate property owners and implement such a program. As mentioned above, we recently placed informational signs along the cart paths on the Oak Glen Golf Course to help inform the general public about the work being done on Brown's Creek, and the significance of the project. As we work on other sections of stream, additional signs can be placed as well. Protection Strategy number 9: The Twin Cities Chapter of Trout Unlimited purchased three (3) temperature monitors for $360. to be placed, along with others, in strategic locations throughout the Brown's Creek Watershed in 1997. Data has been compiled from the monitors for 1997 and 1998 by the city of Stillwater. In addition, TCTU provided partial funding of $1500. for a SWCD monitoring station in 1997, installed this year at the lower end of Brown's Creek to collect data on all required information in accordance with the Minnesota Pollution Control Agency. Further monitoring stations have been placed in Brown's Creek by both the Department of Natural Resources and the St. Croix Research Station - Science Museum of Minnesota this past year. Any further monitoring stations and reporting required during the annexation development will be considered by our organization. Data collected thusfar by the city of Stillwater from our three stations, and that of any other concerned organizations should be turned over to the SWCD for compilation and publication. We hope these responses to your request provide adequate reporting and commitment that our organization has to the success of maintaining the Brown's Creek watershed as a viable trout stream in the midst of suburban development and annexation. The Twin Cities Chapter of Trout Unlimited has already committed over $16,000 and 200 man -hours of volunteer labor to public education, protection and restoration of Brown's Creek. We intend to continue to provide as many resources as we can make available toward helping create a natural- reproducing trout stream which the citizens of Stillwater and the surrounding area can all take pride in to protect and preserve for future generations. Sincerely, A � �� 'Gary H11 Chapter President Twin Cities Trout Unlimited 0 L 17 L n -1 Long Lake Homeowner's Association 3o18 Narine Circle Stiffiwater, 91linnesota 55082 1 September 18, 1998 Klayton Eckles City of Stillwater ' 216 N. 4th Street Stillwater, MN 55082 ' Dear Klayton, Thank you for your letter of August 18 regarding the City's internal audit of the AUAR implementation plan. ' At our Board of Directors meeting on September 15, we discussed the AUAR strategies the City would like our help in implementing. We would like to be of as much service to the City as possible, but are currently limited in financial resources and capabilities. We have several ideas on how to encourage residents to maintain/restore shoreline ' buffers, install native plants and landscaping, and use fertilizers wisely. However, we do not have the financial resources to develop, print, and distribute effective educational materials. We typically print and distribute four newsletters a year to ' our members, and we could easily include information on these issues with these newsletters, but we strongly feel much more needs to be done than this. We i believe it is also important to distribute educational materials to future homeowners ' and all the residents of Stillwater, since water quality is dependent upon what all of us do, not just those who live on a lake shore. ' We would propose meeting with city staff to discuss our ideas, determine the scope of our endeavors, and explore the possibility of receiving assistance from the City ' in producing and distributing printed educational materials. Sincerely, r ' Laurie Maher, Chairperson Long Lake Homeowner's Association I - ISept. 25, 1998 Mr. Klayton Eckles, P. E. ' City Engineer City of Stillwater City Hall 216 North Fourth Street Stillwater, MN 55082 ' Dear Klayton, First, I wish to thank you on behalf of the Brown's Creek watershed District_ ' for this opportunity to comment on the status of the AUAR implementation plan. I am well aware of your background and participation in our predecessor ' organization, the Brown's Creek Watershed Management Organization, and its' demise. I also wish to apologize for the lateness of my response, but as I instructed Mark Doneux to inform you, my mother passed away and I was called to Seattle for over a week to finalize several issues. Having set the stage let me comment specifically in response to the identified areas and then offer a more generalized observation. In both processes I am responding as a citizen of the watershed and as a manager of the BCWD, but without necessarily having the concurrence of my fellow managers. ' 2.0.2 Implement the Stormwater Management Study. We have just completed the Hydraulic and Hydrological Study, which will give us a much clearer picture of origin and quantity of stormwater within both the watershed and the AUAR. This material will be made available in full to the City of Stillwater upon final acceptance by BCWD. It should then be incorporated into specific permitting, ' situations as they may be prioritized due to potential water contribution to the overall water quantity and quality. Certainly, it will assist in identifying location and capacity of retention ponds as ' they are incorporated into plans. 2.0.3 Infiltration and Detention of Stormwater. In addition to the incorporation of the comments on the previous section, we are implementing an LCMR project at the headwaters of Brown's Creek the results of which may be applied to other specific soil types, slopes, and water quantities within the AUAR beneficially. Secondly, we are developing a family of rules to offer both . guidance and requirements for the referenced practices. The rules will incorporate best management practices (BMP's), the results of ' the H & H Study, and summarization of engineering details from other sources as our initial attempt to manage this critical issue. For example, two of the rules are specific to stormwater, as to Goal 2, Protection Strategies ' quantification and the filtration in the berm areas. Initial comments were made pertaining a recent development in the AUAR. As you know, the rules have and are still under review by a Technical ' Advisory Committee and subject to circulation prior to adoption. 2.0.10 Comprehensive Watershed Management Plan. The Brown's Creek ' Watershed District initially adopted the plan of the BCWMO without ' change. It has participated in bring forward two capital improvement projects as amendments to the plan as well. (Neither , of which directly impacts the AUAR.) Specifically, we have formed ' a Citizen's Advisory Committee of eleven members, representing the City of Stillwater and residents within the boundaries of the AUAR, to assist in developing the second - generation plan. This , plan will incorporate many if not all of the conditions referenced in the previously mentioned rules. We are drafting an RFP at this time to identify and contract with a consulting firm for the actual ' preparation of the plan. We fully expect to include the input of the City of Stillwater at every critical juncture to insure cooperation and awareness. ' Goal 2, Protection Strategies ' 7. Groundwater Monitoring. The current monitoring sites within the BCWD are all located within the stream itself. Additionally, there are multiple lake /pond monitoring sites administered within the ' BCWD by DNR and SWCD, supported by the Metropolitan Council. In that the H & H study was primarily based on theoretical ' assumptions and minimal actual measurements it would make ' considerable sense to establish a network of groundwater monitoring sites within the BCWD and AUR as a means of both , verification and as an early warning in the event of unforeseen , circumstances. I believe that the BCWD Board would support such a program and participate in funding, either through grants or direct assessment. ' Goal 7, Long Lake Protection Strategies ' 7.2 Long Lake Water Quality. The initial step is regular monitoring of level and turbidity with periodic purity evaluation. I believe that this is already under way. As an adjunct to this step, there must be , vigorous policing of the developers to insure compliance with AUAR and DNR permitting requirements adjacent to Long Lake. ' As our rules are promulgated and distributed we expect to enter the permitting process and policing thereof directly. 7.3 Neighboring Jurisdictions. The same rules will apply in all , jurisdictions within the watershed as will the policing. The BCWD will take a very active role in the communication process with ' adjacent jurisdictions, through the rules circulation, permitting, policing, and second- generation plan development. ' 7.4 Integrated Water Quality. The second- generation plan is the critical step in this objective. As stated previously, the BCWD is responsible for the plan and has begun its' development. Target ' date for final document is June 2000, but preliminary drafts for discussion and comment will be available much sooner. ' Goal 9, South Twin Lake Water Quality 9.2 Developer Control in AUAR. As stated previously, the rules will be ' in place shortly and the BCWD will become involved in the permitting and policing process. Also, the second - generation plan should enforce the rules, assuming that the timetable for "Orderly ' Annexation" is reasonably adhered to. ' Goal 11, Wetland Management 11.3 Wetland Mitigation or Replacement. Current review of permitting is 9 P P 9 ' coordinated through the SWCD under State Statutes (Wetland Mitigation Act) as to wetlands practices. The rules and second - generation plan are supportive of both the values presented and ' the procedures involved. Based upon the guidance of the H & H study and ongoing monitoring of groundwater and surface water there may be instances where even more stringent requirements will be needed due to fragile ecology, pollution concerns, or sheer volume of potential runoff. In any such cases the BCWD will make every effort to coordinate with the City of Stillwater to both justify and regulate. General Comments: ' We recognize that the AUAR is an expression of the umanifest destiny' of the City of Stillwater. We also recognize that the prior BCWMO ' failed for a number of reasons, leading to the establishment of the current BCWD. Our task is to attempt to balance the expectations of orderly development within the watershed, water quality, environmental impact, trout investment, and prevention or recovery from the damage caused by undesired water (flooding). It would be foolhardy to commit to anyone or any organization that we can mutually meet the expectations of each ' group or issue at the 100% level. However, if we attempt to communicate openly and in a timely fashion there is at least a reasonable expectation that we can maximize the results without excessive cost. The Brown's Creek Watershed District is prepared to support these objectives in the spirit of cooperation and with our best application of available resources. 0 We appreciate that the City of Stillwater is a significant portion of both population and tax base within the watershed. But, the objectives entail issues that are broader than just the corporate limits of the city. ' That implies and requires that we work together to succeed. Respectfully submitted, Craig F Leiser President ' Brown's Creek Watershed Minnesota Department of Natural Resources Metro Waters, 1200 Warner Road, St. Paul, MN 55106 -6793 Telephone: (651) 772 -7910 Fax: (651) 772 -7977 September 30, 1998 Mr. Klayton Eckles City of Stillwater City Hall 216 North Fourth Stillwater, MN 55082 Re: Stillwater Annexation Area AUAR Audit Dear Mr. Eckles: I am in receipt of your letter dated August 18, 1998, regarding the desire of the City of Stillwater to conduct a year -end audit of the annexation area AUAR. I think that such an audit is an excellent idea, and I applaud you for this initiative. In the document you list the goals from Appendix B from the Mitigation Plan and request a response from each agency on their progress toward implementation. The DNR is listed as a "responsible party" for many of the goals. However, in many cases our role is one of a project advisor, rather than a project doer, since we have little staff time or dollars that could be dedicated to this effort. The major exception to this is the Legislature's appropriation of $300,000 for trout habitat protection and improvement, where DNR will be leading the stream relocation effort that is listed as one of the protection strategies. Following is a list of the goals where DNR is listed, and our response: SECTION 2.0 Goal Strategy 1: This has to do with the planned diversion of runoff from Long Lake to McKusick Lake. As we have informed you, no one at the DNR received the final feasibility study for review and comment, before the City adopted it. Therefore, we were not able to express our concerns about the timetable for the diversion prior to its adoption by the City. While we understand the timing with respect to the cash flow from the developers, we are not supportive of constructing the diversion after much of the development is completed. It is our feeling that significant degradation to the creek could occur without the diversion in place to receive the increased volumes of warm strormwater. DNR Information: 612- 296 -6157, 1- 800 - 766 -6000 • TTY: 612- 296 -5484, 1- 800 - 657 -3929 An Equal Opportunity Employer 4M Printed on Recycled Paper Containing a Who Values Diversity &4S Minimum of 10% Post - Consumer Waste Mr. Klayton Eckles September 30, 1998 ' Page 2 As stated above, due to the legislative appropriation, the DNR is moving ' ahead with plans to relocate the creek at the golf course, which is a major component of the diversion strategy. ' In the other aspects of the diversion strategy, the DNR's primary role is the primary regulator of the activities. We have already expressed concern to ' the City about reconfiguring the Long Lake outlet before constructing the diversion. It is important that the City, DNR and Watershed District work closely on implementation of this strategy. DNR has offered staff to ' facilitate communication and discussion between these agencies. Strategy 6: This strategy involves protecting and enhancing in- stream trout habitat. ' The Department has completed two bank stabilization projects, one in 1997 and one in 1998. In addition we have been a partner with Trout Unlimited and others to accomplish plantings along the creek banks to help ' shade the creek. DNR will lead such efforts on the land that it owns and will provide technical assistance to the City and any interested private landowners. , Strategy 9: Monitoring and Data Analysis: DNR waters continues to monitor stage discharge and temperature at one station. DNR Fisheries has installed 4 ' permanent data loggers that provide temperature monitoring every 15 minutes. In addition we are working on a Rosgen classification, which is an assessment of stream channel conditions. We partnered with several ' other public and private groups this summer, to accomplish a dyeVudy to measure movement and time of travel. It is hoped that a budget can be ' pulled together for a long -term monitoring program to look at natural reproduction in the stream. In conjunction with Stillwater Area Public Schools, and with funding from the River's Council of Minnesota and the ' Metropolitan Council, we lead a macro invertebrate study, which has been ongoing for the last two seasons. ' Strategy 10: Comprehensive Watershed Plan development: This strategy involves development of a working watershed model for a full development scenario. The DNR has been working closely with Emmons and Olivier, ' who received the contract from Brown's Creek Watershed District, on the H &H study. It is anticipated that the study will be done in September of this year. ' This strategy also involves the development of a Management Plan by the ' Mr. Ydayton Eckles September 30, 1998 Page 3 ' newly formed Watershed District. DNR staff have provided training to the new Board and it's Citizen Advisory Committee, who are in the process of ' drafting the new plan and new regulations. DNR staff also serve on the Technical Advisory Committee. ' GOAL 2 Strategy 1: Locate new water supply so that it doesn't adversely affect Browns Creek: The DNR has not been contacted by the city for advice in locating a new ' municipal well in the annexation area. The AUAR states that the well will be sited prior to beginning development. It is hoped that the City will contact the DNR about this issue prior to beginning any work on well. ' design or location, and that this contact will occur very soon. [I Strategy 7: Groundwater monitoring program: The DNR does some groundwater monitoring in the watershed, but currently is not doing the level of monitoring needed to develop a complete understanding of the systems that tgroundwater supply Browns Creek and the interrelationship between surface and resources. The DNR does not have the necessary staffing or funding to carry out such a monitoring program relating to the Annexation Area. However, we will be able to provide technical assistance to whoever undertakes such a program, whether it be the City or the Watershed District. Please note that as water supplier to the Annexation Area, the City will bear primary legal responsibility for monitoring effects of any ' water appropriation needed to serve the area. SECTION 3.0 Goal 3 Strategy 3: Develop a restoration and management plan for Browns Creek Ravine: ' To my knowledge, the DNR has not yet been involved in the development of such a plan. The DNR will participate in such development within available funding and staffing constraints. ' Goal Strategy 1: Implement Stillwater Trails and Pathways Corridors Plan: To my knowledge, there have been no discussions on this issue between the City and the DNR since the AUAR was developed. Goal ' Strategy 1: Implement Stillwater's Forest Protection Ordinance: To my knowledge, DNR staff have not recently been contacted by City [I Mr , . Klayton Eckles September 30, 1998 ' Page 4 staff regarding this issue. DNR Forestry staff should be contacted (651- ' 772- 7925), for such assistance. Goal ' Strategy 2: Coordinate activities with Greenway Corridor Planning efforts: Both DNR and Washington County have Greenway -type protection efforts that are being implemented. To my knowledge, Stillwater has not yet ' contacted DNR's Greenways and Natural Area Coordinator about such an effort. DNR's program is just getting underway. The City should contact our coordinator, Al Singer at 651- 772 -7952. ' SECTION 4.0 DNR is not listed as a responsible party under any of the Goals of this Section. However, it ' should be noted that we are interested in and want to be involved in any decisions relating to the implementation of Goals 7, 8 and 9. As previous correspondence has indicated, the Department has great concern for the timing of the diversion and modification of the Long Lake outlet system. ' We totally support any effort that can be made to improve the water quality of Long Lake, McKusick Lake, Browns Creek, and the St. Croix River. My staff is available to assist the City in the development, adoption and implementation of Shoreland Management Ordinance provisions ' that will help carry out these strategies. It should be noted that such an ordinance must meet certain state minimum standards and must be approved by the DNR. SECTION 5.0 Goal 10 , Strategy 1: Sanitary Sewer feasibility study: We assisted the contractors to the best of our ability during the utility work. We think that the utility projects for the most part were successfully completed with only occasional, minor , sedimentation events. SECTION 6.0 ' Goal 11 Strategy 1: Implement existing wetland protection regulations: The DNR has worked with the city on wetland and lake basin impacts through its permitting ' processes. In addition we have been represented on the Brown's Creek Watershed District Rule Committee to assist with watershed -wide planning efforts for all of the waterbodies in the District. ' We appreciate the opportunity to provide comments at this point in time, and look forward to continued participation in the various phases of this development. ' I I Mr. Klayton Eckles September 30, 1998 Page 5 If you have any questions, please contact me or Molly Shodeen at 772 -7910. Early involvement in the city's review of proposals is critical to us being able to provide meaningful comments and suggestions. Sincerely, Dale E Homuth Regional Hydrologist c: Steve Russell, City of Stillwater Brown's Creek Watershed District Sherri Buss, Bonestroo, Rosene, Anderlik and Associates Mark Doneux, Washington Soil and Water Conservation District Matt Moore, Board of Water and Soil Resources Kathleen Wallace, DNR Regional Administrator Tom Balcom, DNR Office of Management and Budget Dirk Peterson, DNR Fisheries - Central Office Bill Penning and Hannah Dunevitz, DNR Ecological Services Scott Kelling, DNR Trails & Waterways Julie Westerlund, DNR Waters Al Singer, Greenways and Natural Areas Coordinator Duane Shodeen, Jason Moeckel, Dave Zappetillo, DNR Fisheries MINNESOTA I ` 3 ' SOIL AND WATER CONSERVATION DISTRICTS October 14, 1998 Mr. Klayton Eckles, City Engineer FAXED AND MAILED ' City of Stillwater Fax 651.430.8810 214 North Fourth Street Stillwater, MN 55082 RE: Stillwater AUAR Mitigation Plan Audit Dear Klayton: WASHINGTON SOIL AND WATER CONSERVATION DISTRICT IEnclosed, is the SWCD activities as they relate to the Stillwater AUAR Mitigation Plan. 1825 Curve Crest Blvd., Room 101 Stillwater, MN 55082 (612)430 -6820 Fax: (612)430-6819 Goal 1 - Protect and Maintain the Current Quality of Surface Water Inflows to Brown's Creek Protection Strategy 7 - Education ' SWCD staff gave a WHIP (Wildlife Habitat Improvement Program) talk in April in conjunction with the Natural Resources Conservation Service and the Minnesota Extension Service. The SWCD coordinated the two Watershed Workshops cosponsored by the BCWD and the DNR. We also facilitated a talk with the Stillwater ' Garden Club. Protection Strategy 9 - Water Quality Monitoring Program The following list summarizes the SWCD's involvement with water monitoring in the Brown's Creek ' watershed: 1) Manage and maintain the outlet monitoring station at the mouth of the creek. This station continuously records flow, temperature, dissolved oxygen, and conductivity throughout the year. Numerous grab samples were obtained in 1998 for nutrient load analysis. '2) Temperature and flow were manually measured and recorded every two weeks at all of the major road crossings over Brown's Creek. Bi- weekly water levels were recorded in 16 lakes and wetlands within the City of Stillwater and the Brown's Creek watershed. ' 3 Three additional rain gages were set in the watershed. These gages are read b volunteers and the data is gg gg Y sent directly to the DNR. IAN EQUAL OPPORTUNITY EMPLOYER Mr. Klayton Eckles October 14, 1998 ' Page Two i -weekly) over the growing season. The lakes , 4) Lake water quality monitoring was done 14 times (b y) g g monitored include; Long, Lily, McKusick, North and South Twin Lakes, South School Section Lake and the , Kismet basin. Water quality parameters include; total phosphorous, secchi disk, chlorophyll -a, and total Kjeldahl nitrogen. In addition to the water quality parameters, a temperature and dissolved oxygen profile was performed and the lake level was recorded. ' Goal 2 - Maintain or improve the quantity and aualily of groundwater discharges to protect the baseflow of Brown's Creek , Protection Strategy 3 - No -net loss of groundwater recharge capabilities The SWCD provided assistance to the BCWD with the development of rules that promotes buffers, less , impervious surfaces and infiltration. Protection Strategy - Avoid shallow groundwater areas ' gY g The SWCD worked with the contractors, during the trunk utility construction, to monitor and measure stream ' base flows during site dewatering of the utility trenches. Goal 11 - Promote no net loss of wetland functions and values I Protection Strategy 1 - Implement existing regulations I The SWCD provided plan review and comments on the Legends development, however, the plans were not submitted until after preliminary approval was granted. The trunk utility plans were submitted to the SWCD by ' the DNR. The Liberty development was not submitted to the SWCD for review and the Summerfield project was submitted directly to the SWCD by the developer. The Notice of Decision was not received by the SWCD for the Legends project. ' Goal 12 - Protect and maintain the quality of surface water flows to wetlands Protection Strategy - Require the use management and enforcement of BMP's , gY q � g The SWCD has reviewed several development plans within the annexation area. Most standard BMP's are , shown on the plans, however, there is a lack of enforcement of these requirements during construction. The SWCD has conducted numerous site inspections and recorded some of our observations to the City and others. , The SWCD has no permit program of its own, but often responds to calls or complaints- about construction projects. When our office is on a construction site, we try to accomplish three basic tasks; 1) identify the appropriate BMP's to stabilize the site and communicate these items to the contractor, 2) identify which , agency(ies) has jurisdiction over the site and potential violations and communicate the problems to those responsible parties, and 3) to look ahead 30 -90 days and try to anticipate problems and identify strategies to avoid future violations. ' l Mr. Klayton Eckles 'October 14, 1998 Page Three I hope these comments assist you with the ongoing AUAR audit process. We look forward to seeing the results of the self -audit and the upcoming meeting with all the parties. Craig Leiser has suggested a meeting date of 'November 9, 1998. He also suggested making it late afternoon, 3:00 -5:00 p.m. Let myself or Julie Westerlund (772 -7938) know if this day and date is ok. If you have any questions, please feel free to call me at 430 -6826. Sincerely, Mark Doneux Water Resource Specialist ' cc: Craig Leiser, BCWD Julie Westerlund, DNR Molly Shodeen, DNR Dale Homuth, DNR Jyneen Thatcher, SWCD Konrad Koosmann, SWCD ' C:\ MSOFFICE\ WINWORD \MJD \WSD \BCWMO \WD \1014ECKL.DOC 1 NATURAL RESOURCE 1 INVENTORY PROPOSAL 1 1 1 1 1 1 1 1 1 L r BONESTR00 ROSENE ANDERLiK October 15, 1998 6516361311 10/15198 08:54 5 :02 NO:863 #01V 1000, Rosrnc Andellik mia AtsOL OtI.." Im H a,I Af(an)dpvr ACliOr1.'Cyuat Opportunlry Lnq "nyMr Mr. Steve Russell Community Development Director City of Stillwater 216 North 4t' Street Stillwater, MN 55082 Dear Steve: erjr)0j)A14: 0(tn C donrsiroo, P.T. - )weplr c Ande(10, rf • hoivhl i.. Saivn Lt, P.l. Richaed E. Tsrrner, P.E. • Glrnn R. C.COk, rF - P(INI r r;. Se ru,n,r nt. I'F - Jerry A kxirdon. U. - RObeir. W. Rgsene, PE. dWd SWAn M. [Drrlin. i PA . Ser lur C una++t:rnsr Aimm,ite• Princ)pcilr: H,,w,ird A. Slmform. i•t • Kenn a r�grdon. PC. - RnU +•rl R PteffurlC, P6 Ria h;t(d W. Foster, PE• - C)•lvld O ! 11-4nt"I P.E.. • R<rtvrrt f . Russek, A I A - 1Adrk A. Nanion. Pk. WNW T. Rausmpnn, Pt. - Ted K.Fietn. 11. - Krnru•In r' Art<.h.awn. C•t - Mark R. Relit. Pt . SrOni'y P WINJAMson. N.t', L.S. - RnOer( 1• K01wdth • Agnei M Ring - Whael P. Rau. PE . Alfan Rlck Schmidt, PE. Ot /lrra' St Pull, Roch,tor. Wlllirtdr iro St rir.+aJ, MN . MUwauk.E e, Wf W^.ASlrt w ww.bArestroacunt Thank you for requesting a scope of services description and estimate for completing a natural resources inventory and management recommendations for a portion of the City's annexation area. The information Is provided in the form of this letter agreement between the City of Stillwater ( "City ") and Ronestroo, Rosene, Anderlik & Associates, Inc. ( "Ecologist "), Project Description The City will soon annex an area bounded by County Road 15, the Zephr Railroad tracks, Neal Avenue and Boutwell Avenue ( "Annexation Area "). The area includes significant natural resources, including tributaries to Brown's Creek, large wetlands, remnant prairies and woodlands. The area also includes existing homes and farm fields. The City adopted the AUAR Mitigation Plan In August, 1997. The plan committed the ' City to protecting significant natural resources in the Annexation Area,. and to minimizing or mitigating impacts to natural resources resulting from development of the area, ' This natural resources inventory to be conducted by the Ecologist will provide the City with a field inventory and careful evaluation of the natural communities in the area to be annexed. It will record this information in maps and data files in a GIS format for the ' City's future use. it will also provide detailed management recommendations for natural communities and storm water management in the area, to help the City to identify and prioritize future management of resources and open space in the area. ' Ecologist's Scope g c pe of Basic Services ' Ecologist's natural resources specialists and engineers will complete the following tasks as Basic Services: 2335 West Highway 36 ■ St. Paul, MN 55113 ■ 612- 636 -4600 • Fax; 612-636 -1311 BONESTR00 ROSENE ANDERLIK 9 6516361311 10/15/98 08:54[5 :03 NO:863 Mr, Steve Russell OctobarY6, 1o0d Stillwater, MN Page z Identify and Map Natural Communities Based on information and aerial photos used to develop the AUAR, Ecologist will identify and outline the wetland and upland natural community areas in the study area. It is estimated that five significant natural communities exist in the study area. Boundaries and acreage will be determined for each community. The sites will be clearly identified and labeled on aerial orthophotos. This information will be digitized, and provided to the City in digital and hard copy format with the final report. 2. Field Inventory Ecologist will complete a field inventory of each wetland and upland community identified in Step 1. The following information will be collected within each area: • Tree species composition • Shrub species composition • Ground cover species composition • Aquatic species composition • Wildlife observations, including sightings and indications of habitat quality • Disturbance indicators • Scenic qualities • Other information useful for management recommendations A Field Report will be completed for each community, and the information collected for each community will be provided to the City with the final report. The woodland communities will be inventoried in the Fall, 1998, and again in early Spring, 1999 to identify spring ephemerals and other early- blooming species. 3. Evaluation and Classification When the Field Inventory is completed, the Ecologist will classify the natural community areas surveyed based on ecological quality, Ecologist will use the same classification and ecological ranking system used by the DNB's County Biological Survey (CBS). The CBS program is nationally recognized for its work, and for the classification and ecological ranking system it has developed, The ecological ranking system grades each community like a report card, with an "A" being the highest quality and a "D" being the lowest. By using this system to identify natural areas, the City has a technically sound set of information that can be easily used and interpreted by other natural resource professionals for future planning and management. The ecological "grade" and reference information will be included in the GIs data files and described in the final report. BONESTR00 ROSENE ANDERLIK S 6516361311 10/15/98 08:54[5 :04 NO:863 I Mr. Steve Russell October 15, 9998 StUtwater, MN PA90 3 ' 4. Management Recommendations ' When the classification of natural communities is completed, Ecologist will work with the City to develop a set of management recommendations for each natural community. This will include specific strategies for protection, restoration, management and mitigation of development impacts as well as recommendations for storm water management to avoid or minimize impacts to the Browns Creek tributaries and wetlands in the study area. The Ecologist will work with the City's staff, Open Space Commission, Planning Commission and others identified by the City to chose and adapt ' management strategies that fit the needs and values of the City, 5, Final Report ' The Ecologist will complete a final report to the Ci ty that will include ma s of the natural community areas, a detailed description of the findings and classification of each area, ' and management recommendations for each area, including storm water and natural community management actions. Twenty copies of the report will be provided to the City, along with digital maps and data files for the natural community areas, compatible ' with the City's Geographic Information System. 6. Project Deliverables ' • One set of infrared photos for the study area with outlines indicating wetland and upland natural community areas. ' a Natural community inventory forms for each site inventory. Summary describing each natural community area and indicating the ecological classification for each site in the study area Digital and hard copy maps indicating the natural community area boundaries, community types, and ecological classification • Management recommendations for each natural community area. ' • Final report including all of the information provided above, and describing the natural resources inventory process r Up to four meetings to discuss the results of the inventory with groups identified by ' the City. 7. Supplemental Service — Assistance with DNR Grant Proposal ' The City has expressed interest in developing a grant proposal to the Minnesota DNR to assist in protection and management of significant natural communities identified during ' the natural resources inventory. The Ecologist will assist the City to develop the Natural and Scenic Area Grant ' proposal, or others identified by the City, as requested, Costs for assistance with the proposal will be billed on an hourly basis, as work is requested and directed by City Staff, The grant proposal is due at the DNR by March 31, 1988. SONESTR00 ROSENE ANDERLIK a 6516361311 Mr. Stave Russell StrlAvater, MN City Responsibilities 10/15/98 08:54 5 :05 NO:863 October 16, 1098 , P"4 City staff will review and approve the map of sites to be inventoried. The City will work with the Ecologist to review inventory and classification results, and to discuss management recommendations. The City will identify groups for public meetings, and organize and publicize the meetings. Three to four meetings should be scheduled by the City to discuss the results of the inventory and proposed management recommendations with the City's Open Space Commission, developers, area residents, Planning Commission and City Council_ Compensation The costs associated with the above tasks are estimated as follows: Natural Community Inventory and Mapping communities at_10 hours each, $72,00 per hours $3,600. Management recommendations (12 hours, $72,00 /hour.LL 864. 630. Storm water management recommendations Project en ineer, 10 hours at $63.00/houo Complete report and public participation X30 hours,_$72.00 per hour. „ 2,1 Ex enses, mileage, rmtin 8 ra hics --�200. TOTAL Estimated Cost $74-54, For completion of the Ecologist's Basic Services as outline e6e- the City will pay the Ecologist on an hourly basis in accordance with the Billing Rate Schedule attached as Appendix A, with a not -to- exceed fee of $7,254 without authorization from the City. In addition, the City will pay the Engineer's Reimbursable Expenses, which are estimated at $200, "Supplemental Services " -- defined as services authorized by the City and performed by the Ecologist which are not included in Basic Services —shall be paid for by the City on an hourly basis in accordance with Appendix A, Standard Terms and Conditions The Standard Terms and Conditions attached in Appendix B are incorporated in this Agreement. aaaaa. ar, rtaa*► a+ aar +,��rraa +arrwwaaaawaa *wwa� *w. BONESTROO ROSENE ANDERLIK 6516361311 1 10/15/98 08:54 (5 :06 N0:863 Mr. Steve Russell October 16, 1996 Stillwater, MN Page 8 Please have both copies signed by the City and return one copy to Sherri Buss of our firm as our notice to proceed. We appreciate the opportunity to continue our service to Stillwater. Sincerely, BONESTROO, ROSENE, ANDERLIK & Accepted by: ASSOCIATES, INC. CITY OF STILLWATER By ' Otto G. Bonestroo, CEO Date ' %*RA)U&G(Y rAQMS1j1Wt far A1.028 Nml R94 lnvdoc By Printed name and title Date - -- And by Printed name and title Date 1 MCKUSICKLAKE � STUDY PROPOSAL 1 1 1 1 1 1 1 1 1 SONESTR00 ROSENE ANDERLIK 6516361311 10/02/98 09:05 C� :02 ' MCKLISICK LAKE ANALYSIS AND MANAGEMENT PLAN -- PROPOSAL Honestroo & Associates October 2, 1998 Background ' in August, 1997, the City ul' Stillwater adopted an AUAR and Mitigation Plan for its Annexation Area. McKusick Lake is one of the resources that will be affected by the implementation of the Mitigation Plan. During the past fifty years, the quality of the lake ' and its recreational value have been changed greatly by development and storm water runoff' thorn its adjacent neighborhoods, and by construction ol' a dike at the north end of the lake. Lake residents are concerned that the proposed storm water diversion will affect ' the aesthetic qualities of the lake, and are interested in actions that could be taken to improve the quality of McKusick Lake. ' The City of Stillwater is also concerned about the quality of McKusick lake. At the same time, the City has made a legal and financial commitment to implement the AUAR and its Mitigation Plan. The City is proposing an action plan to assess the current status ' of the lake, explore options for improving the ecological and aesthetic duality of the lake, and evaluate the costs and benefits of these options in the context of its commitment to the AUAR and Mitigation Plan. The proposed action.plan includes the following tasks: ' Assess the Current Status and Condition of the Lake We will collect and analyze all existing data on the past and current condition of ' McKusick lake. This will include historic aerial photos, lake depths and trend data, and available information on water quality and aquatic communities, including a current ' assessment of these factors: Much of this information was gathered for the AUAR. In addition to gathering and analyzing all existing data on the lake, we will complete the ' following: • a hydrographic survey of the lake showing lake bottom contours • an assessment of the type and relative abundance of aquatic plant species in the lake • develop a computer model that will allow assessment of nutrient and hydraulic loadings to the lake from the watershed under current conditions and a variety of proposed management scenarios. The model will provide an ' important tool to quantify the relative impact on water quality in McKusick Lake of the management actions that will be evaluated as a part of this project, such as re- routing storm water flows, lake dredging, etc. ' This quantified analysis of management actions is not currently available, and is needed to assess the cost effectiveness of potential actions that may protect or improve lake water ' quality. Asa part of this step, we will review the AUAR Mitigation Plan, and identify and quantify the specific impacts to the lake that would result from implementation of the proposed storm water diversion from Brown's Creek. NO: 534 BONESTR00 ROSENE ANDERLIK g 6516361311 10/02/98 09:05 5 :03 N0:534 Process us We will work with the City, residents in the Lake McKusick area, natural resources agencies, and other experts as needed to complete this study. We will convene a Task ' Force to review the summary of current status of the lake, evaluate proposed improvements, and their feasibility, costs and cost effectiveness. We will also schedule public meetings with lake residents at the begiruting and end of the process, or as needed fl Identify and Evaluate Options for Improvement We will work with a Task Force including the City, Minnesota DNR, focal watershed ' management organizations, and local residents to describe the lake analyis, pre::ent the results of the analysis, and identify actions that may be taken to improve lake water quality, fish wid wildlife habitat, and aesthetic quality of McKusick Lake. The actions to ' be evaluated will include at least the following: e Dredging portions of the lake to increase lake depths Plant community and shoreline management to intpmve water quality and ' fish habitat • Modification of the wetland above McKusick Lake to maximize water quality benefits to the Lake ' Use of temporary draw down of the Lake (during winter months) to manage aquatic plants • Use of harvesting to manage aquatic plants , • Aeration to enhance survival of game fish over the winter • Implementation of the AUAR Mitigation Plan 0 Raising the Normal Water Level of the lake ' • Public education, street sweeping, and other non - structural options to decrease pollutant input to the lake. ' We will evaluate each of these options for its potential benefit to • Water quality • Fish and wildlife habitat benefits ' • Aesthetic benefits Evaluate Costs and Cost Effectiveness of the Options , Next, we will evaluate the cast of each feasible improvement, its cost ell'ectiveness in relationship to lake quality, and the effect of each on the costs to implement the AUAR ' Mitigation Plan. For example, the option of raising the Normal Water Level of the lake will affect the cost of building a dike at the north end of the McKusick wetland and raising McKusick Road to prevent flooding. We will evaluate the costs for these ' infrastructure modifications, and for enlarging the outlet and pipe from McKusick Fake to the St. Croix River, as well as the costs for other feasible improvements, such as dredging, plant community management, and other options listed above. This analysis , will be included in the report and recommendations to the City. Process us We will work with the City, residents in the Lake McKusick area, natural resources agencies, and other experts as needed to complete this study. We will convene a Task ' Force to review the summary of current status of the lake, evaluate proposed improvements, and their feasibility, costs and cost effectiveness. We will also schedule public meetings with lake residents at the begiruting and end of the process, or as needed fl BONESTR00 ROSENE ANDERLIK p 6516361311 10/02/98 09:05 C� :04 N0:534 It' during the process, to discuss the purpose of the study and its findings. We will present a report to the City detailing the amlyis of lake conditions, proposed improvements and their cost ellectiveness, and recommendations of the Task Force. The City Council will make final recommendations on improvements to he implemented. Tasks and Costs The proposed tasks and costs for the work described above include the following: I. Hydrographic survey and plant community assessment $ 1 ,218 II. Water quality model development and analysis 6,366. Complete GIS work ($2,050) Assess pond sizes and develop model input ($1,328) Develop model ($1,992) Model runs and analysis of results ($996) 1I1. Assessment of management options, costs and lake Response 2,284 Develop report 830 IV. Task Force Activities and Public Meetings 5,576 Word processing, printing, graphics 400 Travel 300 TOTAL PROJECT COST $ 16,974 Project Timeline October is an ideal month to complete the hydrologic survey and lake mapping; tasks. We' propose to complete this work during October, 1998, and immediately after begin the development of the water quality model, form the project task force, and complete other project steps. We estimate that the project and recommendations to the City will be completed in approximately six months, by Mttreh 31, 1998. 1 62ND STREET STUDY 1 1 1 1 1 1 1 1 1 1 - I r Report for Special Area Plan North 62nd Street Area Stillwater, Minnesota October, 1998 File No. 510 -98 -800 City of Stillwater -- North 62nd Street Area Plan Project Summary This plan was developed to guide land use, development and infrastructure decisions in Stillwater's North 62nd Street Planning Area. The area includes approximately 150 acres, bounded by North 62nd Avenue and the Croixwood Area on the north, County Road 5 on the east, Highway 36 on the south, and County Road 15 on the west. The area was annexed to the City in 1996. Existing land use in the North 62nd Street Area includes large -lot single family homes, agricultural uses, and City -owned open space. The area also includes wooded areas, several wetlands, and the southern portion of Long Lake. In 1995 the City adopted a new Comprehensive Plan that includes the North 62nd Street Area. The Plan includes general guidelines for development of this area. In 1997 the City adopted an Alternative Urban Area Wide Review (AUAR) and Mitigation Plan that evaluated environmental impacts of proposed development in the Annexation Area, and developed a plan to avoid, minimize or mitigate potential impacts. The City's Comprehensive Plan and AUAR Mitigation Plan provided a city planning policy basis for this Special Area Plan. The North 62nd Street Area Plan provides more specific guidance for future development of the area, and gives direction to developers and the City for land use and densities, parks, traffic and pedestrian circulation, public utilities and storm water management. City of Stillwater —North 62" Street Area Plan Page -1 I U �� 1 Planning Issues in the North 62nd Street Area • Zoning and Residential Densities A generalized land -use plan for the area was developed as a part of the City's Comprehensive Plan. Classifications included Single- Family Large Lot, Attached Single Family, Parks and Open Space, and Campus Research and Development. Issues for the Area Plan include a review of the Comprehensive Plan land -use designations, and specification of residential densities and options for clustering that may ' be used as the area develops. The Area Plan integrates the recommended land uses with storm water facilities, streets, utilities, parks and trails, and existing land uses in the area. • Storm Water Management The Stillwater Alternative Urban Area Wide Review (AUAR) identified several storm water management issues in the North 62nd Street Area. A key issue is the high level of storm event runoff from the area east of County Road 5 that passes through the area to Long Lake. An analysis of current conditions in the area suggests that the Market Place Pond (east of County Road 5) appears to properly account for the storm water flows from Market ' Place. However, storm water flows from other upstream drainage areas, which enter the pond from Stillwater, Highway 36 right -of -way, and Oak Park Heights, diminishing the water quality treatment capacity of the existing pond. Significant issues in the North 62nd Street Area related to storm water flows from Market Place include the following: ' Erosion in the drainage channel to Long Lake • Floatable pollutants in the storm water flowing to Long Lake, such as bottles, litter, and oil • Existing sediments in Long Lake near the channel outlet • Water quality issues due to particulate and soluble pollutants (phosphorus) ICity of Stillwater —North 62 "° Street Area Plan Page -2 G ul 10 'mil L Y, Cbr�NE;• TD (A 7�:ArqTA-Z &T) or," water 14 Stillwater 0 North 62nd Planning Area Bonestroo efl, 10 Feet Anderlik & Associates E k:6 161-1 If'rp, —1- The AUAR recommended that the storm water system between the Market Place development and Long Lake be reviewed to identify potential improvements in the ' conveyance system. The Area Plan describes how the current levels of storm water flowing through the area will be managed to address the issues identified above. The ' plan also includes recommendations for managing the storm water that will be generated by new development in the area. The storm water elements of the plan are integrated ' with proposed park and open space facilities and surrounding development. Other water - related issues in the Area Plan include the need for an outlet for Brewer's Pond, a land - locked basin, and recommendations for wetland management and storm water management in the Campus Research and Development Area. • Circulation and Utilities ' Several circulation and utilities issues were identified for consideration in the Area Plan. These included the following: • The route and configuration of a proposed frontage road to connect County Road 5 and County Road 15 ' • Potential connection of Nightengale Boulevard to the Frontage Road or 62nd Street • New configuration for 62nd Street, including a cul de sac south of Long Lake ' and connections to County 15 • Development of recreational trail routes through the 62nd Street Area to ' connect existing and proposed trails around the area • Possible sewer connections for existing homes. The Area Plan addresses these issues and integrates the circulation and utilities elements ' with other elements in the Area Plan. • Existing Development /Current Landowners A number of single family homes exist on the south and east sides of Long Lake. ' Residents and other landowners want to be sure that future development is managed in harmony with what already exists in the area. They also expressed clear interest in how ' potential road and utility development in the area will relate to their properties. ' City of Stillwater —North 62nd Street Area Plan Page -3 Area residents were informed and invited to participate in the development of the North 62nd Street Area Plan. Agencies and organizations that participated in the Stillwater AUAR, including the Joint City and Township Board for the Annexation Area were also invited to participate. City of Stillwater —North 62nd Street Area Plan Page -4 ' Plannin g Process ' The North 62nd Street Area planning process begin in May, 1998, with collection of existing information about the area. An initial public meeting to identify resident issues ' for the planning process was held on June 11. The meeting was attended by nearly 100 people. Strong opinions were expressed about key issues in the planning process, ' including circulation, storm water management and land use. City Planning staff and consultants met with neighborhood residents on June 18 to further discuss these issues ' and participated in a neighborhood walking tour. Planning staff and consultants also met individually with existing and potential owners of property in the North 62nd Street Area to discuss the issues to be addressed in the plan. The consultants presented three concept plans to the Stillwater Planning Commission on August 10 for review and comment. The same concepts were presented to the public on August 13. This meeting was also well- attended, and extensive comments provided to further development of the plans. Planning Commission members and a City Council member attended this meeting. The Stillwater Planning Commission met on August 31 to review the elements presented in the concept plans and the public comments. At this meeting, they completed recommendations for each element in the plan. The consultants developed a final plan based on these recommendations. This was reviewed at the Planning Commission ' meeting on September 14 and a public hearing date set. The public hearing was held on October 12. The final plan was adopted by the Stillwater City Council on , 1998. Summaries of each of the public meetings, detailing issues and comments, are provided ' in attachments to this plan. ICity of Stillwater —North 62nd Street Area Plan Page-5 Recommendations for the North 62nd Street Area The Stillwater Planning Commission completed recommendations for the North 62nd Street Area Plan on August 31, 1998. The sections that follow summarize the Planning Commission's recommendations. The recommendations were adopted by the City Council on , 1998. A map illustrating the recommendations follows at the end of this section. • Land Use The Planning Commission recommended that land use in the North 62 "d Street Area generally follow the recommendations in Stillwater's Comprehensive Plan. This includes the following: • The area north of 62nd Street and adjacent to County Road 5 should be zoned for Townhouse /Cottage residential use, at densities of 6 -10 units per acre. • The area north of 62 "d Street and within 1000 feet of Long Lake should primarily be zoned for single family residential use, at densities of 2 -4 units per acre. This density meets DNR Shoreland regulations for the area adjacent to Long Lake. • The undeveloped area between 62 "d Street and Highway 36 is zoned for Campus Research and Development uses. Residential uses are not recommended for this area. • Developers in the area will be required to dedicate park land to the City. The preferred location for this park is adjacent to the east shore of Long Lake, south of the existing storm water channel and its easement. • The small, undeveloped area south of the City's storm water channel may be difficult to connect to City services and the circulation system for the area. The City should explore options to align the storm water pipe and channel to the south of its current location, where this is feasible, and work with developers to encourage clustering and slightly increased densities north of the channel, to allow dedication of the area south of the channel as parks and open space. • Several significant woodlands exist in the area. Developers should be required to preserve the majority of these areas, particularly large and healthy trees, native shrubs and ground cover species. The trees help to stabilize steep slopes, filter runoff to Long Lake and wetlands in the area, and provide habitat for birds and other wildlife. Significant wooded areas include the following: pine and deciduous woodlands adjacent to County Road 5 that form a "gateway" to this portion of the City, City of Stilltivater —North 62,d Street Area Plan Page -6 ' woodlands on the steep slopes east of proposed storm water ponds in the Campus Research and Development Area, wooded corridors along the east half of North 62nd ' Street, and woodlands adjacent to Long Lake south of the storm water channel. ' • Circulation ' The Planning Commission's recommendations related to auto, bicycle and pedestrian circulation in the North 62nd Street Area include the following: ' Frontage Road ' • The new frontage road that will serve the 62nd Street Area should connect to County 5 at a signaled intersection with Curve Crest Boulevard. The City should request a ' variance from MSA standards to allow a curve with a posted speed of 25 mph to the west of this intersection, as indicated on the attached concept plan. This will reduce the amount of land required for the curve substantially from what would be required for 30 a mph curve, the MSA standard. • All three options presented for the frontage road configuration in the west half of the ' Campus Research and Development area should be presented as options to landowners and developers in the area. The choice among the options will be made when the area is annexed to the City. • The alignment of 62nd Street from the Legends development (west of Long Lake) to County 15 and its connection to the proposed frontage road should be resolved as ' soon as development plans are known for the area between the Legends and County 15, and a feasibility report for its development authorized. ' • The west end of the new frontage road should connect to County Road 15 at the same location as the existing North 62nd Street. This should be a signaled intersection. ' Ni hten ale Boulevard and North 62nd Street • Nightengale should be maintained in its current configuration, as a cul de sac. • Local streets in the areas identified for development of single family and/or County 5. townhouse uses should connect to the new frontage road along • Single family homes developed adjacent to Nightengale Boulevard may be connected with that street. - ICity of Stillwater —North 62 nd Street Area Plan page_7 • North 62nd Street west of County 5 will be ended in a cul de sac south of Long Lake, as recommended in the City's Comprehensive Plan. North 62nd Street should be designed and maintained as a rural lane, in keeping with its current character. West ' of Long Lake, North 62nd Street will carry traffic from the expansion area to County 15, and link with the new frontage road serving the Campus Research and ' Development area. Pedestrian and Bicycle Trails Pedestrian and bicycle trails should be developed in the following locations: , • Along the western segment of North 62nd Street, linking to trails along County Road 15 and the west side of Long Lake, and to the eastern segment of 62nd Street.. ' • Along the east segment of 62nd Street, linking to Long Lake and County Road 5 trails. • From 62nd Street to the existing storm water pond and open space, and along the storm water channel to the park area proposed on Long Lake. ' • From 62nd Street north to Nightengale Boulevard • From Nightengale Boulevard east to County 5 trails. • Storm Water Management The Planning Commission g adopted recommendations for storm water mana p cement in the North 62nd Street Area. Members also discussed the need to develop a Comprehensive , Storm Water Plan for the City, to anticipate and deal with the types of complex water management issues evident in the Market Place and North 62nd Street Areas. As the City develops this plan, review of conditions and issues in the Market Place area could be ' accelerated, to identify potential areas for water quality and quantity improvements. This analysis may affect the size of pipe recommended to Long Lake from the existing pond ' west of County Road 5, as described below. The Planning Commission recommended the following: ' • Construct a storm sewer pipe to handle up to a 100 -year storm event from the existing pond west of County Road 5 to Long Lake. , • Provide overland drainage to supplement the storm sewer pipe. The overland drainage would be designed to be an amenity for the trail corridor to Long Lake and ' adjacent open space area. City of Stillwater —North 62 "d Street Area Plan Page -8 I • Excavate delta material from Long Lake near the outlet of the current storm water channel. • Add skimming devices at the outlet from Market Place Pond and North 62nd Street pond west of County Road 5. • Expand the existing storm water pond west of County Road 5 to the east on property owned by the City. • Require that developers in the North 62" Street Area provide storm water ponds to serve all new development, and meet the City and AUAR standards for storm water quality and quantity management. • Suggested sizes and locations for storm water ponds to serve the Campus Research and Development area are shown on the attached Concept Plan. These ponds should be designed and constructed as the area is developed. The City may consider realigning the channel from these ponds to Long Lake to the west of its current location, so that the channel flows under a public street rather than a private driveway. • Require developers in the North 62nd Street area to maintain unknown vegetative buffers around wetlands as the are develops, as required in the AUAR. • Add an outlet pipe from Brewer's Pond to Long Lake. City of Stillwater —North 62nd Street Area Plan Page -9 Implementation The concept plan for the North 62nd Street Area includes land use and infrastructure elements that are highly interconnected. As a next step, the City may complete the following: Feasibility Report(s) A feasibility report or reports for the North 62nd Street Planning Area will help the City to integrate the elements proposed in the concept plan successfully. The report(s) would include the circulation system, storm water management, and open space elements of the plan. For example, the feasibility report(s) will identify opportunities to coordinate grading and other development activities as roads and storm water improvements are completed, to develop the area efficiently. Trails and other open space elements can be integrated with the design of infrastructure to ensure timely implementation and save development costs. The feasibility report(s) will include project costs, assessments, right - of -way needs, and scheduling. The feasibility report(s) should include the following items: Circulation • Complete design of the Frontage Road from Curve Crest Boulevard to 62nd Street. Resolve design speed for the curve so that the road is eligible for MSA funds. • Complete design of 62nd Street west of County Road 5 and its cul de sac at Long Lake. This should include design of trail(s) to be part of this corridor, and storm water linkage from the area south of 62nd Street to Long Lake. Upgrade of the existing street section would be reviewed with adjacent residents. • Finalize trail alignments and design throughout the North 62nd Street Planning Area, identify needs for easement, dedication, or land acquisition, and locate and design trailhead areas and their connections to other plan elements. City of Stillwater —North 62 nd Street Area Plan Page -10 IStorm Water ' • Identify alignment of storm water pipe to Long Lake and size the pipe. • Design overland channel and associated greenway elements, and size the channel to complement the new storm water pipe. Align pipe and overflow channel to the south were feasible to maximize development area to the north. ' • Determine the amount and location of material to be dredged from Long Lake, and identify areas for disposal. • Determine appropriate skimming structures for Market Place and North 62 "d Street ' ponds. • Review drainage areas upstream (east) from County Road 5 to identify potential areas ' for additional water quality and quantity improvements. This step may occur as a part of development of the City's Comprehensive Storm Water Management Plan. ' • Identify alignment for outlet pipe from Brewer's Pond and connections to new storm water pipe and overflow channel to Long Lake. Open Space ' Complete design for open space area proposed south of the storm water channel, and integrate with the channel, storm water pipe location, existing land uses, and ' proposed trails. AUAR Mitigation Plan and Stillwater Comprehensive Plan • Development of the area should follow the recommendations of the AUAR ' Mitigation Plan for storm water management and natural resource protection. • Development of land use, circulation systems and infrastructure, and open space and park areas should follow the Stillwater Comprehensive Plan recommendations for Special Planning Areas. 1 City of Stillwater —North 62 "° Street Area Plan Page -11 Attachments Attachments to the plan include the following: • Concept Plan graphic • Summaries from Public Meetings • August 21, 1998 Storm Water Management memo • August 3, 1998 Traffic Estimates on Nightengale memo City of Stillwater —North 62 "d Street Area Plan Page-12� I I� -TRAIL- - -- t - - - -- `� It / D O OPTION 3 V ' j . Q I •� � Z ; CAMPUS RESEARCH \ E AND DEVELOPMENT OPTION I i HIGHWAY 36 STILLWATER, MN NORTH 62ND PLANNING AREA CONCEPT PLANS 00 YR. STORM SEWER PIPE . OVERFLOW Ts., f3^fi CHANNEL uymTY.i , ORRIDOR \�® &. i+ • �ruai i` EXISTI • ti J CT "Ve r REGIONAL CAMPUS RESEARCH i t STORM t DEVELOPMENT PONDS • FRONTAGE OA jg /4' I OuJ . C YE lJST Bonestroo Rosene mc:m Anderlik & " Associates Engineers 8 Architects North 62 "d Street Planning Area ' Public Meeting- -June 11, 1998 Summary ' Introductions and Project History, ' Steve Russell, Community Development Director Issues Discussion — North 62 "d Street Area Sherri Buss, Bonestroo & Associates ' The public meeting on June 11 described the North 62 "d Street Planning Area study, and identified the issues and concerns the residents of the area have with how and ' what will happen to the land around them in the future. Existing and future land uses and densities were the first topic of the evening. No final zones and densities have been set, but when polled, most residents wanted to keep ' the large lot zone as it once was in the framework of a township. The majority of the people at the meeting wanted to keep 5 and 10 acre lots the standard. A few would be like to here more about the option for sub- dividing. The residents want to keep the area ' low density and rural in character. Steve and Sherri asked the participants what they thought about lot sizes from 8 -20 thousand square feet. Steve noted that this planning process will determine density standards for the area, and the city would like to consider t developing the homes in patterns and clusters. Townhouses were another issue that was addressed. The residents wanted to know how high the townhouse would be and where they would be built. Steve pointed ' out a strip on the maps handed out next to highway 5 as the possible site for the townhouses. He noted that the height of the townhomes would probably not exceed 30'. The residents were ' concerned that townhouse could create a high- density rental atmosphere and that increase density would change the auto circulation in the area. The third area for future development is highway 36. This area will be developed as light industry in a campus setting. To many residents the news of industrial growth , was a surprise. One person inquired if there is going to be a funeral home in the area. Steve noted there would be a funeral home near Highway 5 and 36, and the area would be ' in a campus setting that would allow for landscaping and green areas. He also noted the construction of a frontage road would allow access to the area. The future of 62 "d street was of great concern also. Everyone noted the quaint , beauty of the road and want to keep it so. Sherri mentioned the possibility of turning that road into a dead end street. Most people thought that was a very good idea. The people want to keep it rural and narrow like it was when in the township. The residents would ' like to have the property in the area to stay at 2.5 space acre lots with low density. Cars and people invading the area were concerns to the residents. Many believe 'a that with more development and higher density that will change the quality of the area. ' Most residents object to more cars and people. Circulation was one of the topics of greatest concern. Nearly all of the residents at the meeting feel very strongly that they do not want Nightengale road to be opened up ' to Highway 5 or 62 "d street alone with new development. The residents want to keep the street the way it is presently. They wrote and responded vocally that the street would be ' costly to widen and add sidewalks to accommodate a high traffic area, are concerned that more traffic could decrease the value of their homes. Many people are concerned that ' crime could become a threat, and the children of the area would not be able to use the street for recreation with traffic speeding by. Residents noted they bought the land in a cul -de -sac for the aesthetic value of having less traffic. Steve mentioned utility connection and sewer services as something the residents could add to their homes with the new development. Steve added that the cost would partially come from the city and from the homeowners. The residents felt that the area's ' stormwater problems should first be addressed and fixed before other ideas about water were mentioned. Stormwater management was a subject from the past of intense concern. The ' residents do not know how the development will affect the area. They reflect on the past and existing stormwater problems due to Market Place. Many people believe that these problems could worsen due to a higher density in the area. The residents of the area wish ' to have Market Place pay for the cost of fixing the present stormwater problems, and are fearful that more impervious surfaces being developed at this time will worse the problem. The residents do not know what will be the future of the lakes and wetlands if there are more homes and a light industrial campus development. There are also concerns about quality and its affects on Long Lake. Stormwater quantity and quality is understandable an important issue for this area. ' Market Place has left the residents with a feeling of deteriorating quality in Long Lake. The residents believe the lake and wetlands are affected. One example of this is Brewers ' Pond, which has no outlet and the pond is being filled with the run off from existing development. They would like data that would give them an understanding of how this area will be affected by the new development. Many people are concerned about the quantity and quality of the water from the light industrial area. To insure their quality ' people believe that the DNR needs to be a part if managing the lake and wetland. The residents want complete plans indicating all areas the water will go. One way to help solve the stormwater problems, beautify the area and allow ' development may be construction of a greenway and buffers. Sherri introduced the idea of having a greenway and ponding, which would serve as a series of ponds and a stream to move the stormwater out of the area. Sherri wanted the residents to understand the ' benefits to the wildlife and recreational quality of the area by having a greenway. The residents wanted to know how large the greenway would be. Reactions where that if the ' greenway was large then there would be little space for lots. Many people wanted the greenway to have a path on one side and leave the other side for the wildlife. Buffers also were though of as a good concept. The buffers would keep the area quiet and more natural. ' Along with buffers residents would enjoy open space areas, wetlands and woodlands. The residents would like to keep the open space around them. That is one of ' the reasons they moved to the area. The residents feel very strongly to preserving they space and the wildlife in it. Sherri and Steve mentioned trails and pathways. There were mixed reactions to that. Some people did not want to give access to non - residents while others believed the quality of the community would rise by having trails, paths and connections in the area. All of the discussed points add up to neighborhood character. The residents believe deeply in their community and do not want the character changed ' for the worse. They have a quality of life that they do not want disturbed. One person commented that they were fearful that the area was going to become another Woodbury. ' The residents enjoy Long Lake and the wetland around it. They feel the area is a beautiful, natural place perfect for wildlife habitat and privacy. The residents do not want the area to be exploited or crowded, but do understand that the city is becoming larger ' and with that growth development is needed. They do not want the area they call home to be altered without their knowledge. Study Time Frame , June 11 — Public meeting on issues , A meeting in between for the residents August 13 — Public meeting to review concept plans September — Complete plan ' The residents said that the proposed time frame for deciding on the plan was not ' enough time to allow for their input on the changes going to be made in the Long Lake area. They want another meeting with all the decision - makers involved in the project to be there. Steve will work with the city administrator to schedule this meeting. Sherri is going to walk around the area on June 18, 1998 with many of the residents to get a feeling for the area and what the people want. Steve noted there would be a range of concept plans that will be drawn up. Some concept plans may have positive aspects, ' while others may have negative aspects. The huge range will help determine the course of action best of the residents and area. Parts from every concept plan may be used to comprise the correct final plan for the development of the area. The final plan will have a ' public hearing process in the fall and will be implemented. n North 62 "d Street Planning Area —City of Stillwater Public Meeting Summary ' August 13, 1998 ' Meeting Purpose The purpose of the meeting was to review three concept plans for development of the ' North 62 "d Street Area. The key elements of the plans include options for land use, traffic and pedestrian circulation, storm water management, parks and open space, and public utilities. The Stillwater Planning Commission reviewed the concept plans on ' August 10. Public comments from this meeting will be provided to the Planning Commission on August 31. At that meeting, the Planning Commission will review the options and make recommendations to the City Council. Approximately 60 people attended the Public Meeting. Attendees also included members of the Planning Commission, City Council, Public Works Director, Public Safety ' Director, Community Development Director, and three staff from Bonestroo & Associates, consultants for the planning study. ' Bonestroo staff presented the three concept plans to the audience. Staff noted that the process is still in a "concept" phase, where all options are open for consideration. Comments about the elements of the plans included the following: ' Public Comments ' Hwy 5 -15 Frontage Road Members of the public asked if the City will be constructing the Frontage Road in the ' near future, and if state funds will be used for this project. Concern was expressed that construction of the road will force early development of this area. ' Steve Russell noted that the area west of Long Lake and south of 62nd Street has not been annexed to the City. It will not be annexed until landowners in this area request ' annexation. The road will not be constructed until the area is annexed to the City and owners are ready to develop their properties. The City will request Municipal State Aid (MSA) funds to construct the road at this time —it cannot request and bank funds ahead ' of road development. The City is requesting concept plans for the road as a part of the planning study so that it ' can ensure that the road design is workable with other elements of the plan; so that a design can be implemented at the County 5 end of the area, where development will occur earlier; and to give landowners an idea of how the area may eventually develop to ' assist with their decision - making. n Storm Water Issues Residents expressed concern and frustration related to storm water flows from the Market Place area, and their effects on water quality and channel erosion west of Highway 5 and in Long Lake. They suggested that a comprehensive approach is needed to deal with storm water flows in the area, and should be completed prior to approval of the North 62 "d Street Plan. A resident suggested that there be a moratorium on new development in Market Place until storm water management issues have been addressed. Klayton Eckles noted that the the Market Place pond (east of County 5) was sized correctly for the Market Place development when it was built, and met standards for water quality and quantity management at that time. However, the pond was not sized to take flows from Oak Park Heights that have been routed through the pond, and this reduces the ability of the pond to function as it was designed. He noted that new development in the Market Place area is now required to meet higher standards for water quality management. New elements, such as the Sports Complex, are building additional ponds as they are developed. A Watershed District Board member asked if the proposed development plan would affect the AUAR completed for the area. Bonestroo staff noted that storm water flows in the 62 "d Street Area (as well as all areas tributary to Long Lake) were modelled for the AUAR at the full- development level proposed for the area, so the AUAR and Mitigation Plan will not be affected by any of the proposed concept plans. The Board member asked if the concept plan could be presented to the Watershed District Board for comment. Staff indicated that the Board could invite the City to do this, and suggest a meeting time. Bonestroo staff are still working on the storm water issues related to the 62 "d Street Plan. Three concepts have been developed so far, and will be refined and fully- developed for the August 31 Planning Commission meeting. requested that the concept plan be presented to the Watershed District for comment. Traffic Circulation Residents expressed a high deyree of opposition to concept plans that connect Nightengale Boulevard to 62" Street or the new frontage road proposed for the area. City staff indicated that the connection is being considered to improve emergency vehicle access to the area, to balance traffic among streets in the Croixwood neighborhood, and to give Croixwood residents additional access to County 5. City staff noted that even small reductions to emergency response time may be significant. Comparisions were provided regarding current traffic counts on other streets in the neighborhood, indicating that 400 -600 additional cars estimated per day for Nightengale is a relatively small number in relation to traffic levels on other neighborhood streets. r_ Residents suggested that it is illogical for the City to create cul de sacs on 62nd Street near ! Long Lake, and on 72nd Street, at the same time that it is proposing to open the Nightengale Boulevard cul de sac. Steve Russell noted that the cul de sac on 62 ❑d Street ! had been recommended and approved with the City's Comprehensive Plan. Residents asked about a potential division of Dick Anderson's property, and how these ' lots may access Nightengale. Mr. Anderson was not in attendance at the meeting, and an answer to this questions was not available. Residents suggested a forth circulation option, as a variation on Concept Plan 3. The option would be to route traffic from both the proposed townhomes and single family homes to the proposed frontage road. This option will be included with those presented ! to the Planning Commission. L Residents asked if Nightengale would be upgraded to a collector street. Klayton Eckles indicated that the 400 -600 additional cars estimated per day with a connection would not be enough to require that Nightengale be upgraded to a collector street —it would remain a "local" street. ' Residents expressed concern a bou t a possibl e increase in crime if Nightengale Boulevard is connected to other streets. The Stillwater Police Chief noted that crime is not higher ! on the "collector" streets in the neighborhood. Residents expressed a number of concerns related to the potential connection of ! Nightengale Boulevard: • Possible decline in property values • Concerns about increased traffic and noise • Cost of the option to the City • A busier street may divide the neighborhood • Concerns about safety, since the neighborhood currently uses the street as a ! play area • Residents do not see the current emergency response time as a problem • Possible increase in crime • Most neighbors do not want the change • The existing exits to County 5 from the Croixwood neighborhood provide sufficient access for neighbors • Residents paid more for their lots because they were located on a cul de sac, and feel that it is unfair and an economic harm to change the situation now. ! Residents provided an analysis of emergency access to the area that suggested that p Y g Y bg ! opening the Nightengale cul de sac would not measurably improve access time for fire trucks. Residents suggested that it is illogical for the City to create cul de sacs on 62nd Street near ! Long Lake, and on 72nd Street, at the same time that it is proposing to open the Nightengale Boulevard cul de sac. Steve Russell noted that the cul de sac on 62 ❑d Street ! had been recommended and approved with the City's Comprehensive Plan. Residents asked about a potential division of Dick Anderson's property, and how these ' lots may access Nightengale. Mr. Anderson was not in attendance at the meeting, and an answer to this questions was not available. Residents suggested a forth circulation option, as a variation on Concept Plan 3. The option would be to route traffic from both the proposed townhomes and single family homes to the proposed frontage road. This option will be included with those presented ! to the Planning Commission. L Residents asked about how the City will make the decision regarding Nightengale Boulevard. Staff and consultants indicated that the Planning Commission will make a recommendation to the City Council, which will make the final decision on this issue. Other Issues and Next Steps A resident expressed concern that staff and members of the Planning Commission have already made up their minds regarding issues in the planning study, and are not listening to residents' concerns. Planning Commission members responded in turn that each has not made a decision on the elements in the study, and that they are listening carefully to residents' comments and will consider these comments in making their decisions. Audience members suggested that residents contact their Planning Commission and City Council members to let them know about their concerns before August 31. The next steps in the planning process will include the following: August 31 Planning Commission working meeting to consider the concept plans and Recommendations on the elements in the plans Mid -Sept. Public Hearing on the preferred options recommended by the Planning Commission 1 Bonestroo Rosene Andertik Associates Engineers & Architects Eone> rc,-. Fosene. Ar ^er!rk , r. a .3 ssocixes. Inc, is an A ffirmarn e Action Equa! Opporrunrry En-; � Pnncipais O.:to G. Borestroo. PE. • Joseph C. Anderlik, RE. • blarvin L. Sorvaia, RE - Mcnar; E. Turns. ?E .0 :enn R. Cook, PE • Robert G. Schunicrrr. P.E. • Jerry A. Bourdon, R.E. Robert 7'. Rosene. PE. and Susan M. Eberlin, C.P.A.. Senior Consultants Assoc, are Pnncipa!s: Howard A. Sanford. R.E. • Keith A. Gordon. P.E. • Robert R. Pfefferle. P.E. Richard W Fester. PE. • David O. Loskota, PE. • Robert C. Russek. A.I.A. • Mark A. Hanson, P.E. Michael T. Rautmarn. PE. • Ted K.Field, PE. • Kenneth ° Anderson, P.E. • Mark R. Rolfs. PE. Sidnev P. Williamson, F.E., L.S. • Robert F. Kbtsmith • Agnes PA. Ring • Michael P. Rau. P.E. Allan Rack Schmidt. RE. (Yf,Ces St Paul, R ^Chester, W,limar and St. Cloud, SI ?I • .%!,!w?ukee, WI vleGsite www.borp,,roo.com TO: Stillwater Planning Commission Members FROM: Klayton Eckles, Public Works Director & Sherri Buss, Mark Hanson, Erik Peters, Bonestroo & Assoc., 604 -4758 SUBJECT: Stormwater Management Issues and Options for North 62 "d Street Planning Area DATE: August 21, 1998 Background An important issue in the North 62 "d Street Planning Area Study is the management of storm water. Of particular concern are the peak storm water flows during storm events that come from the Market Place area, under Highway 5, and move through the existing pond and down a channel to Long Lake. Our analysis of the current conditions in the area suggests that the Market Place Pond appears to properly account for the storm water flows from Market Place. However, storm water flows from upstream drainage areas, which enter the pond from Stillwater, Highway 36 right -of -way, and Oak Park Heights cause the existing pond to exceed its capacity. (The map attached indicates the drainage area to the pond.) Therefore, when County Road 5 was upgraded, an additional 36" diameter storm sewer pipe was constructed to increase the storm water outflow from the pond. Channel improvements were constructed downstream, between County Road 5 and Long Lake in Stillwater Township. However, the improvements were minimal. In light of the recent annexation and development of the North 62 "d Street Area plan, it is ' now timely to consider finalizing the storm water improvements from the Market Place Pond to Long Lake. These improvements need to address the following: ' 1) Erosion in the channel to Long Lake 2) Floatable pollutants in the storm water flowing to Long Lake, such as bottles, ' litter, oil, etc. 3) Existing sediments in Long Lake near the channel outlet 4) Water quality issues due to particulate and soluble pollutants (phosphorus) ' We have developed four options which are discussed below (illustrations are attached). Each of the options addresses the first three issues identified above. Each also addresses 1 ' 2335 West Highway 3 ■ ' 1 612-636-4600 -636-1311 g y G St. Paul, h11� 551 3 Fax: G12 Q �#ld f i�V QL ' -- — — �— ` S44619H GNOd S.Nb *md XeO I Z .... 7r, Fr! ,l WN. flo OIL 0 T 1, ' ` 1 � � TU[i�_ [ _ � 0 gols Por sozs OZ :6 07S ON COE ' �J Iy bola Lots je _Aul )q so I ILE' bo G'8 Nols cof • ZOES x3p 3 SNmoba r z eul 10 a& J z 0 X m I ' the fourth issue. with options 3 and 4 probably providing a higher level of water quality improvements (issue 94). ' Option 1 0 Construct a storm sewer pipe to handle 10 -year storm events. Restore the ' existing overland channel to prevent erosion. This channel would handle events larger than the 10 -year storm • Add skimming devices at two locations indicated on the map ' Excavate delta material from Long Lake and disposed on site, in and adjacent to the eroded pipe construction areas. • This option may provide limited additional phosphorus removal. tThe City should require that developer(s) in the North 62nd Street Area provide "off line" storm water ponds to serve new development that provide additional phosphorus removal and meet the City's current. standards for ' storm water quality and quantity management. ' Option 2 • Construct a storm sewer pipe to handle a 100 -year storm event. Provide a route for overland drainage if needed for events larger than the 100 -year ' storm. This could be a swale or channel planted with native vegetation. • Add skimming devices at two locations indicated on the map • Excavate delta material as in option 1 ' • This option may provide limited additional phosphorus removal The City should require that developer(s) in the North 62 "d Street Area provide "off line" storm water ponds to serve new development that provide ' additional phosphorus removal and meet the City's current standards for storm water quality and quantity management. Option 3 • Constrict a storm sewer pipe to handle a 100 -year storm event as in Option 2. Expand the existing 62nd Street Pond and Market Place Pond. • Add skimming devices at two locations indicated on the map ' Excavate delta material as in option 1. • This option increases available ponding and will provide additional phosphorus removal. ' The City should require that developer(s) in the North 62 "d Street Area provide "off line" storm water ponds to serve new development that provide additional phosphorus removal and meet the City's current standards for storm water quality and quantity management. ' Option 4 • This option is similar to Option 3, but reduces the storm water flow under County Road 5 to the level that existed before Market Place developed by ' eliminating the 36" pipe capacity. This will include construction of a storm sewer pipe to handle the 100 -year storm event, expansion of the 62nd Street Pond and Market Place Pond, and look for additional ponding upstream. ' • Add skimming devices at two locations indicated on the map • Excavate delta material as in revious options ' P P • This option would provide additional ponding and retention time, and will provide additional phosphorus removal. , The City should require that developer(s) in the North 62 "d Street Area provide "off line" storm water ponds to serve new development that provide additional phosphorus removal and meet the City's current standards for storm , water quality and quantity management. Combining Options ' The City could chose to combine some of the options described above. For example, the City could choose to complete Option 1 Option 2 in or the short term, and implement Option 4 over the long term. The City could also choose to implement Option 1, 2 or 3, and look for additional opportunities for ponding upstream over the long term. The City could identify these ' ponding opportunities and evaluate water quality benefits by completing a Storm Water Management Plan and working with the Browns Creek Watershed District. The nature and complexity of issues in the Market Place area point to the value of developing an overall storm water management plan for the City. , Other Design Issues , • The channel restoration in Option 1 would be an "armored" channel. With the larger pipe size proposed for Options 2 -4, other channel options are possible: ' • A channel with a more natural appearance could be constructed under Options 2 -4, that would carry intermittent stream flow and become an amentity for open space in the area ' • An overflow could be constructed that as a planted swale, but not designed to appear as a stream channel. This could fit into a woodland or prairie restoration as a part of the development of the open space area. 1 Benefits and Costs We ' would need additional information and additional analysis time to determine the potential water quality benefits of each option, to allow careful evaluation of costs and benefits of each option. In typical water quality ponds, there is a steep rise in costs, but a much smaller increase in benefits, for phosphorus removal over 60 percent. ' We believe that the costs of the options are progressive —that Option 1 would have the , least cost, and Option 4 would have the highest cost. Estimate of likely costs of each option is beyond the scope of the current concept plan effort Raszatr/rqo.t"ro.ipj ouesvLAfjA OP-Ati - I cvod Ate• -' ° ._..�s :�,. 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PE. • K_�t. _;•.,.. . ?E ^.C. - ?:c -- :.v Fos: 'E • orv,c 0 _,uor.t. PE. • ? c- _ ? <. A. •.a r -c - Raatrrerr. ?E. rec < e!C ?E - Kerre :- rae•ion 'E. Garr - .re. ..S • ?CCdn r Kot,mrtr • - • .• 'd trey: r- :..v.vnc-e::•oo ; on ' MEMORANDUM TO: Klay-ton Eckles Steve Russell ' FROM: Sheldon J. Johnson DATE: August 3, 1998 ' SUBJECT: Traffic Estimates on an Extension of Nightingale Avenue to connect to proposed E -W Collector. ' BRA File NO. 510-98-800 CC: Sherri Buss The 62nd Street area planning project has identified two alternatives for providing an extension of Nightingale Avenue to provide an additional outlet to County Road 5 and the residential area that is presently developed north of the 62nd Street area. These alternatives are conceptually ' illustrated on Figure 1. Alternative A provides a connection from Nightingale turning easterly to connect to the proposed collector road that will service the 62nd Street planning area. Alternative B extends southerly from Nightingale to connect to existing 62nd Street. Each of these alternatives provides an additional outlet from Nightingale with Alternative A being more direct with respect to providing a connection to County Road 5. ' The residential area that is bounded on the north by Croixcwood Boulevard, on the east by County Road 5, on the west by Long Lake, and on the south by the Parkwood Lane residential area presently contains approximately 407 residential lots with most having been developed. ' Utilizing trip generation rates published by the Institute of Transportation Engineers, the number of daily trips generated by 407 single family dwelling units is 3,895 (407 x 9.57). This means 1,950 inbound and 1,950 outbound vehicles on a daily basis. ' Access to the residential area previously described is presently available to /from County Road 5 at the Wild Pines Lane signalized intersection and at the Croixwood Boulevard signalized ' intersection. 2335 West Highway 36 ■ St. Paul, MN 55113 ■ 612 - 636 -4600 ■ Fax: 612- 636-1311 Klayton Eckles, Steve Russell Page 2 A ugust 3, 1998 The traffic estimates that have been derived and discussed later are for purposes of providing an estimate of additional traffic that could be expected to use Nightingale Avenue at the south end of that existing roadway. Additionally, the estimates illustrate certain streets that may expect reduced traffic volumes given the implementation of Alternatives A or B. Considering Alternative A, it is estimated that an additional 600 vehicles per day could be expected on Nightingale Avenue at the south end of what is the existing roadway. These trips would be locally generated by persons living in the area. Traffic volumes would be expected to decrease by a total of 600 vehicles per day on the combination of streets such as Croixwood Boulevard, Northland Avenue, Sunrise Avenue, Parkwood Lane, and Wild Pines Lane. Considering Alternative B, the additional traffic on Nightingale will be less. than Alternative A, given the "indirectness" of the path to County Road 5. It is estimated that the increased traffic would be approximately 400 vehicles per day. In either alternative, volumes on Nightingale, while being higher than today's situation, would still be indicative of a local residential street. Due to the nature of the roadway design in the residential area, it does not appear as though through traffic (that not destined to /from the residential area), would be introduced on Nightingale. The extension of Nightingale to provide an additional outlet to County Road 5 benefits the entire residential area south of Croixwood Boulevard and part of the area north of Croixwood Boulevard. Traffic volumes would become more evenly balanced throughout this area with the additional outlet to County Road 5. It is also anticipated that emergency. vehicle service would be improved with the additional accessibility. � PARK AND TRAILWAY � DEDICATION POLICY � AND � TRAIL CORRIDOR PLAN 1 1 1 1 1 1 1 1 CITY OF STILLWATER PARK AND TRAIL DEDICATION POLICY POLICY ADOPTING STANDARDS AND GUIDELINES FOR DETERMINING THAT PORTION OF LAND BEING PLATTED, SUBDIVIDED OR DEVELOPED WHICH IS TO BE CONVEYED OR DEDICATED TO THE PUBLIC FOR PARK, TRAIL OR RECREATION PURPOSES OR WITH RESPECT TO WHICH CASH IS TO BE CONTRIBUTED TO THE CITY IN LIEU OF SUCH CONVEYANCE OF DEDICATION. 1. AUTHORITY: The state of Minnesota has enacted Minnesota Statutes 462.358, subdivision 2(b) which gives authority to the Cities to require that a reasonable portion of any proposed subdivision be dedicated to the public, or preserved for public use as parks, playgrounds, wetlands, trails or open space. The City of Stillwater has, by this dedication policy, chosen to exercise this authority in establishing minimum requirements for meeting this public need. 2. PURPOSE: The City Council recognizes that preservation of land for park, playground, wetland, trails, and public open space purposes as it relates to the use and development of land is essential to maintaining a healthful, safe and desirable environment. The City must not only provide these necessary facilities for citizens of today, but also for the future needs of the City as described in the Comprehensive Plan. It is recognized by the City Council that the demand for park, playground, to wetlands, trails and public open space within a municipality is directly related to the density and intensity of development permitted and allowed within any area. Urban development means greater 1 numbers of people and higher demands for park, playground, wetlands, trails and public open space. The Park Plan Standards of the City, an element of the Comprehensive Plan, has established minimum community criteria for meeting the needs of the residents of Stillwater. In order to meet the community needs for parks, playgrounds, wetlands, trails and open space, ten (10) acres of such land is required for each 1,000 residents of which seven (7) acres shall be designated as neighborhood parks. Neighborhood parks have a service area of one - quarter mile. This shall be the standard upon which the City shall establish its park land and parks cash dedication. It is the policy of Stillwater that the following guidelines for the dedication of land for park, playground and public open space purposes (or cash contributions in lieu of dedication) in the subdividing and developing of land are appropriate.: 3. RESIDENTIAL PARK LAND DEDICATION: The amount of land to be dedicated shall be based on the net developable land area of the proposed subdivision, proposed type of dwelling unit and density. The 1990 census data for households includes 2.8 persons per household. The formula for land dedication: The greater of 1) proposed units per acre or 2) zoned density. Dwelling Unit Densitv Land to be Dedicated 0 - 1.9 units per acre 9% 2.0 - 3.5 _. units per acre 10% 2 C! 5. 3.6 -5.9 units per acre 11% 6 -10 units per acre 12% 10+ units per acre Additional .5% for each unit over 10 Commercial 7.0% of net land area RESIDENTIAL TRAIL REQUIREMENTS: Residential subdivider shall provide community trail facilities acceptable to the city or pay a fee of $225 per residential dwelling unit for trails. GUIDELINES FOR ACCEPTING DEDICATION OF LAND FOR PUBLIC PARK PURPOSES: A. Land proposed to be dedicated for public purposes shall meet the needs of the City as described in the Stillwater Comprehensive Plan. B. Prior to dedication, the subdivider shall deliver to the City Attorney, an abstract of title or registered property abstract evidencing good and marketable title, free and clear of any mortgages, liens, encumbrances, assessments and taxes. The conveyance documents shall be in such form acceptable to the City. C. The required dedication or payment of fees -in -lieu of land dedication shall be made before final plat approval. D. The removal of trees, topsoil, storage of construction equipment, burying of construction debris or stockpiling of surplus soil on dedicated land is strictly forbidden without the prior written review by the Parks and Recreation Board and approval of the Community Development Director. K E. F Grading and utility plans, which may effect or impact the proposed park dedication, shall be reviewed and approved by the Community Development Director and Parks and Recreation Board prior to dedication. To be eligible for park dedication credit, land dedication is to be located outside of drainways, flood plains or ponding areas after the site has been developed. Grades exceeding 12 percent or that are unsuitable for park development may be considered for partial dedication. Absent unusual conditions, storm water drainage areas and holding areas or ponds shall not be considered wetlands. However, where wetlands have been determined to have a park function by the Parks and Recreation Board, credit may be given at a rate of 25 percent of the pond or holding area and adjoining land areas below the high water level; a minimum of 70 percent of land above the high water mark or 100 year flood plain shall be dedicated before pond or holding area credit is granted. In addition, developers must also comply with City dedication policies relating to wetland dedication. Where subdividers and developers of land provide significant amenities such as, but not limited to swimming pools, tennis courts, or ball fields, within the development for the benefit of those residing or working therein, and where, in the judgement of the Parks and Recreation Board, the amenities significantly reduce the demands for public recreational facilities to serve the development, the Community Development Director may recommend to the Parks and Recreation Board that the amount of land to be dedicated for park, playground and public open space (or cash contribution in lieu of dedication) be reduced by an amount not to exceed 50 percent of the amount in calculated under paragraph 2 above. G. The City, upon review, may determine that the developer shall create and maintain some form of on -site recreation use by the site residents such as tot lots and open play space. This requirement may be in addition to the land or cash dedication requirement. 6. CASH PAYMENT IN LIEU OF DEDICATION, RESIDENTIAL: If, at the option of the City upon review and recommendation of the Parks and Recreation Board, it is determined that a cash payment in lieu of land dedication shall be made, the cash shall be placed in a special fund for Parks and Recreation use and deposited by the developer with the City prior to final plat approval. The in lieu park fee shall be based on the following guidelines: Single Family Residential $725 per unit Duplexes $500 per unit Townhomes $500 per unit Multifamily $500 per unit 7. COMBINATION LAND AND CASH DEDICATION: The city may require the subdivider or developer to make a combination cash and land dedication pursuant to the following formula: A. The amount of land which could be required in accordance with Section 3 shall be calculated. 5 B. From the total calculated in subparagraph (A) above, the actual amount of land the city determines to be needed to fulfill the purposes of this Subd. 6 shall be subtracted. C. The balance arrived at in subparagraph (B) above, shall be converted into a cash contribution in lieu of land dedication pursuant to a standard formula established by the city, which formula takes into consideration such things as, but not necessarily limited to, the fair market value of the property in the plat, subdivision or development and the percentage of the total park dedication obligation represented by the said balance. 8. INDUSTRIAL /COMMERCIAL DEDICATION REQUIREMENTS: Subdividers and developers of commercial/industrial land, including commercial/industrial portions of Planned Developments, shall be required at the time the site plan is approved and building permits are issued to dedicate to the City for park, playground and public open space purposes, 7.0 percent of the net land area within the development as determined by the City according to the guidelines set forth in Section 3 of this policy. 9. CASH PAYMENT IN LIEU OF DEDICATION, COMMERCIAL AND INDUSTRIAL: In those cases where the City does not require park or open space within a development, the City shall require payment of fees in lieu of land dedication in an amount equal to the net land area required in Section 3 above. Cash shall be contributed at the time of approval of each final plat or at the time of site plan or building permit approval as determined by the City. A credit of up to 25 percent of the required dedication may be allowed by the City Council Z for on -site storm sewer, water, ponding and settling basins provided that such improvements benefit identifiable park and recreation water resources as recommended by the Parks and Recreation Board.. The City Council, upon review and recommendation of the Parks and Recreation Board, may review and determine by resolution an adjustment to the fee based upon the City's estimate of the average value of undeveloped land in the City. 10. REQUIRED PLAN AND IMPROVEMENTS TO PARKS: The developer or subdivider shall be responsible for preparing a concept park plan or trail plan based on the Parks, Open Space and Trails Plan as identified in the Comprehensive Plan as approved by the Parks Board, and for making certain improvements to their developments for parks, playgrounds and public open space purposes as follows: A. Provide finished grading, appropriate ground cover or sodding for playground, paved trails and perimeter landscaping. B. Establish park boundary corners for the purpose of erecting park limit signs. The developer shall contact the appropriate Parks and Recreation Department personnel for the purpose of identifying park property corners. C. Provide sufficient improved public road access of no less than 300 feet for neighborhood parks and additional frontage for community parks. 7 = iwy 96 Natural WO i� ', 6� r NI i VI < -- Greenbelt - -> - - - - -- - - - - -- ; r �Wa e r Expansion Area Greenways, Parks and Trails ., Rivers ,! . f Trails - ----' ,,' County Trails a- Sidewalk Proposed Roads z N City Limits School ['_: Trailhead Parking J Fii Recreation & Natural Parks Rau, bon Q Expansion Area CM Greenway e 00 0 700 1400 Feet �v 1:12887 N i A R, albn 1I,. -- 62nd St Mcv C Phase 11 r� N (D l r s Racreall ��' Natural WO i� ', 6� r NI i VI < -- Greenbelt - -> - - - - -- - - - - -- ; r �Wa e r Expansion Area Greenways, Parks and Trails ., Rivers ,! . f Trails - ----' ,,' County Trails a- Sidewalk Proposed Roads z N City Limits School ['_: Trailhead Parking J Fii Recreation & Natural Parks Rau, bon Q Expansion Area CM Greenway e 00 0 700 1400 Feet �v 1:12887 N i A R, albn 1I,. -- 62nd St 1 FOREST PROTECTION 1 PLAN 1 1 1 1 1 1 1 1 1 1 Tree Protection Standards City ater, C y of Stillw , Minnesota I. Purpose ' The City of Stillwater recognizes that trees are a valuable resource in terms of watershed protection, air quality, wildlife habitat, energy conservation, prevention of soil erosion, screening/buffering, and community aesthetics. The city seeks to protect their tree resources by formulating these standards of tree protection and conservation to guide development projects in woodland areas. III. Areas to Be Protected Any parcel which contains significant trees or which contains woodland areas with native trees and shrubs within, or adjacent to, its boundaries. III. Design Considerations ' During the it is be taken to planning process, expected that all measures will protect significant trees and woodland areas on, or adjacent to, the parcel and that roads, utilities and structures will be sited to minimize the impact on trees and natural areas. ' Fragmentation of natural areas, and intrusion into environmentally sensitive areas, is to be avoided, if possible. Clustering of structures and development activities along the margin, but not within natural areas, is to be encouraged. When developing wooded parcels, it is ' desirable to save groups of trees rather than individuals, woodland areas that are contiguous with other natural areas, and areas of vegetation adjacent to riparian and wetland areas. ' IV. Requirements A. Site Plans -The developer should provide a plan of the parcel to be developed ' or altered showing areas where individual significant trees and woodlands are located. Before development begins, the developer should provide a grading plan for the site showing locations of all significant trees within the area to be graded ' and within 30 feet outside of the area to be graded. B. Tree Protection Plan - prior to grading, a tree protection plan must be submitted which shows the location of trees and woodland areas to be protected during development, the means of protection, and other measures to be taken to insure the health of trees and woodland areas close to the development area. V. Tree Protection Methods A. Fencing - prior to grading, all significant trees and woodland areas to be saved, which are inside or within 30 feet of the grading limits, are to be fenced with ' metal fenceposts (6 ft. on center) and orange snow - fencing. The fencing is to be placed at the critical root radius of the largest tree within the group to be ' protected. If the fencing cannot be placed at a distance from the trunk equal to the Stillwater - Tree Protection Standards 8198 - 2 ' critical root radius, then it must be placed no closer than 15 feet to a tree or ' woodland area to be saved. If the fence is temporarily removed or knocked down, it is to be replaced immediately. No vehicular traffic or storage of materials will occur behind fencing. This fencing is to remain until all phases of construction have , been completed. B. Silt Fencing - to protect significant trees and woodland areas which are located at an elevation below the area being graded, silt fencing should be erected , at the grading limits to prevent soil from washing into the root area of trees to be saved. This fence should be at least 20 feet from the trunk of any significant tree to avoid excessive silt deposits over tree roots. This fence should be regularly ' inspected for efficacy and, if it is found to be allowing soil to wash through, it should be repaired or replaced. C. Grade Change - if the grade around a significant tree is to be raised or ' lowered more than 6 inches, a retaining wall and /or a drain the system should be considered to avoid damaging roots. Any retaining wall should be placed outside the critical root radius of a significant tree, if possible, but no closer ' than 15 feet to the trunk of a significant tree. D. Utility Installation - excavations necessary for installation of utilities should occur outside the protected root zone of significant trees which are to be ' saved. If a utility excavation is to be placed closer than 15 feet to the trunk of a mature tree, the city arborist should be consulted to investigate alternative installation techniques, such as tunneling under the root system. , E. Vehicle Parking - to minimize soil compaction over root systems of trees to be saved, vehicle parking areas should be located at least 30 ft. away from significant trees and woodland areas. ' F. Location of Storage and Clean -out Areas - to avoid soil compaction, leaching of toxic materials, or change in soil pH associated with leachate from ' building materials, storage of building supplies and equipment clean-out areas should be located at least 50 ft. away from significant trees and woodland areas. Clean-out areas should not be located in an area which will drain to the root ' systems of trees which are to be saved. G. Clearing of Undergrowth - except for buckthorn eradication, extensive clearing of undergrowth and/or disturbance of the ground litter layer should not , occur in woodland areas which are to remain in a natural state after development. H. Pruning - pruning of trees which are to be saved should be limited to dead ' and broken branches or pruning of branches for vehicle clearance. No pruning or wounding of oaks should take place between April 15 and July 1 in order to minimize insect transmission of the oak wilt fungus to healthy trees. If oaks are accidentally pruned or wounded during this period, apply an asphalt -based tree ' wound paint to the wound immediately. Stillwater - Tree Protection Standards 8/98 - 3 ' I. Oak Wilt Management - if oak wilt disease has been identified on the development site, all measures necessary must be taken to halt the spread of the disease, not only within the development parcel, but also to neighboring ' parcels. An oak wilt management plan which deliniates the areas of infection, areas of installation of root graft barriers, and plans for tree removal and storage /disposal of red oak wood, must be submitted before development occurs. All control work does not need to be completed prior to development; however, if ' applicable, wilting red oaks should be removed, and root graft barriers should be installed in a timely manner to limit disease spread.. I Mulching - trees to be saved, especially individual significant trees within the grading limits, would benefit from the application of 4 inches of wood chip mulch over the root system from 1 ft. out from the trunk to the branch spread of ' the tree. K. Watering - trees within the grading limits should be provided ' with supplemental water before, during and after development, if possible. Definitions significant tree - any deciduous shade tree greater than 8 inches in diameter (measured at 54 ' inches above the ground) and any coniferous tree greater than 10 feet in height native trees and shrubs - those trees and shrubs native to the Minnesota area (existing in the ' region prior to major European settlement circa 1840) critical root radius - the area from the trunk of a tree out to a distance in feet equal to 1.5 times the trunk diameter at breast height (dbh) (dbh = diameter, in inches, of trunk measured at a point 54 inches above the ground) protected root zone - the diameter of the root area of a tree, half of which is equal to the ' critical root radius oak wilt management plan - a plan which delineates the methods to be used to control the spread of the oak wilt fungus from diseased to healthy oaks of any species. riparian areas - areas along the course of a stream or river ' wetland areas - areas inundated or saturated by surface or groundwater at a frequency and duration sufficient to support, and that under normal circumstances do support, a prevalence of vegetation typically adapted for life in saturated soil conditions. ' Wetlands generally include swamps, marshes, bogs, wet meadows, open water communities and seasonally flooded basins. it 131-1 STILLWATER CODE ' tions and conditions as may be necessary g. The plan must provide for adequate ' to protect the public interest. Bonding drainage, stormwater retention and may be required in an amount sufficient erosion control measures. to complete site restoration should the applicant default. h, The plan must provide for traffic ' (8) standards. Grading permits may be is- movements to and from the site and sued only for grading plans that comply must not have significant adverse intersections with the following standards: affects on roads, or de- ' a. The plans must maximize the pres- velopment in the area. Streets aur- rounding the site must be swept to ervation of trees on the property and remove any debris that may accumu- utilize the trees to the maximum late due to these activities. ' extent possible to screen the grading from adjacent property. i. The plan must include a schedule of b. The plan must utilize landscaping to activities which limits the duration ' restore site aesthetics, minimize the of disruptions and impacts. visual impact of the work, screen the j• The plan must also be approved, grading from adjacent property and where required, by appropriate enhance the property's development tershed districts, the United States tea ' potential. All areas altered because Army Y Corps of Engineers, the state of grading activity must at a mini- department of natural resources and annum, be restored with seed and any other government agency that ' mulch or sod within two weeks after has jurisdiction. the completion of the activity. The k. The plan shall be accompanied by a city may approve an extension of bond sufficient to ensure compliance , this deadline if appropriate, but in with the approved permit and ade- no case may site restoration be de- quate site restoration. The amount laved beyond October 1. of the bond will be based upon the C. The plan must not result in sites size of the site, sensitivity of its ' that are unsatisfactory for develop- surroundings, extent of grading, ment of permitted uses. The devel- amount of material moved, neces- opment potential of a site may be sary site restoration and potential adversely impacted by unsuitable fin- impacts upon public facilities, includ- ished grades, poor soil stability, un- ing damage to public roadways and satisfactory drainage or exposure to property. ' deleterious influences. 1. The plan must comply with the state d. The plan must provide for the re- building code and all other applica- moval of any significant amounts of ble statutes or ordinances. organic material or construction de- (Ord. No. 686, 9- 29 -88; Ord. No. 769, 3 -2-93) ' bras. e. In instances where an existing buffer Subd. 28. Forest protection. Forest protection will be impacted by grading or filling regulations are as follows: ' operations, site restoration must be completed in a manner that resem- (1) Findings and purpose. The city finds that bles the original vegetative. and preservation of trees and woodlands within the city is critical to the health; safety and ' topograpic state of the property. welfare of the citizens; that existing and f The plan must protect designated wetlands, potential development within the city has floodplains, shorelands, the effect of reducing and in some cases ' public waters and other natural fea- eliminating wooded area, which, if pre - tures. served and maintained, serve important CD31:78 IZONING § 31 -1 ' ecological, recreational and aesthetic ben- Person means any individual, firm, corpo- efit to existing and future residents. There- ration, partnership, association or other fore, the purposes of this subdivision are private or governmental entity. ' the following. To preserve woodlands and Structure means anything manufactured, trees on individual sites; protect the safety constructed or erected that is normally of such residents by preventing wind and attached to or positioned on land, includ- water erosion, slope instability and rapid ing portable or temporary structures. ' runoff; promote the health of such resi- Ree means any woody plant that has at dents by absorption of air pollutants, con- least one trunk with a diameter of six taminants and noise; and protect the wel- faze inches or greater measured at four feet ' of residents by increasing rainfall above the ground. infiltration to the water table, provide a diversified environment for many kinds of Woodland means a group of trees at least animals and plants necessary for wildlife one -half acre in area and with a crown ' maintenance and important to the aes- thetic values and recreational require- (4) Restrictions. No development permit may ' ments of the area and promote energy conservation by shading buildings in the be issued for any development unless the development is in compliance with the summer and breaking winds in the win- following standards: ter. a. Development must be conducted so ' (2) District boundaries. The forest protection that the maximum number of trees regulations apply to all zoning districts are preserved by the clustering of within the city. structures in existing cleared areas ' (3) Definitions. The following words when and natural clearings. used in this subdivision shall have the b. Grading, contouring and paving may meanings ascribed to them in this subsec- not detrimentally affect the root zone ' tion, except where the context clearly in- aeration and stability of existing trees dicates a different meaning: and existing trees must be provided Crown cover means the ratio between the with a watering area equal to at amount of land shaded by the vertical least one -half the crown cover. protection of the branches and foliage C. When trees are lawfully removed, area of standing trees to the total area of the permittee must, , restore the den- land, usually expressed as a percentage. sity of trees that existed before the ' Development means the construction, ad- development. Comparable nursery dition, installation or alteration of any stock must be utilized, but not more structure, the extraction, clearing or other than ten trees per acre are required. alteration of terrestrial or aquatic vegeta- tion, land or the course, current or cross d. Development may not reduce the section of any water body or watercourse existing crown cover greater than 50 of the division of land into two or more t and may preserve the percent ' parcels. Development permit means any subdivi- e. Trees used in reforestation or land - sion, planned unit development, zoning scaping must be compatible with the -and ' permit, grading permit, plat approval, re- local landscape conditions and zoning, special use permit or variance. not presently under disease epi- Dimensional requirement means mini- demic. ' mum and maximum setbacks, yard re- 1. Lawful development is under a quirements and structure height or size continuing obligation to observe restriction established in this section. these restrictions. CD31:79 86. 131-1 STILLWATER CODE 2. The removal of trees seriously damaged by storms or other acts of God or diseased trees is not prohibited. Subd. 29. Administration and enforcement. Ad- ministration and enforcement of this section shall be as follows: (1) Purpose. The purpose of this subdivision is to establish the procedures to adminis- ter this section and to set forth the basic responsibilities for its administration. (2) Decision boards and officials. The follow- ing is hereby established: a• Community development director. In order to carry out the purposes of this section on a day -to-day basis, to aid in the enforcement of this section and to relieve the planning commis- sion and city council of certain rou- tine and nonpolicy functions there is established the position of commu- nity development director. b. Planning commission. The planning commission is established by section 22 -5, subdivision 5. The planning commission consists of nine mem- bers appointed by the city council. The planning commission must adopt rules and procedures for transacting business. C. Heritage preservation commission. The heritage preservation commis- sion is established by section 22 -5, subdivision 10. The heritage preser- vation commission consists of seven members appointed by the mayor and city council. d. City council. The city council con- sists of five members elected by the citizens of the city. (3) 73Pes of permits. The following permits and actions are established in order to carry out the purposes and requirements of this section: a. Appeals; b• Certificate of compliance; CD31:80 C. Conditional or special use permit; d. Comprehensive plan amendment; e. Design review permit; f. Grading permit; g. Planned unit development permit; h. Project modification; i. Sign design approval; j. Site alteration permit; k. Use determination; 1. Variance; m. Vegetative cutting permit; and n. Zoning amendment text/map. (4) Environmental review. The state environ- mental review program, (MERP), Minn. Stat. §§ 116D.04 and 116D.045 and Ad- ministrative Rules M.R. parts 4410.0200 to 4410.7800 require environmental re- view of projects that require permit ap- proval of the city. The intent of the process is to evaluate and make publicly known the possible impacts of proposed projects on the environment and to investigate potential adverse impacts. Each project is evaluated by the community development director according to the MERP guide- lines, and a determination is made whether environmental review is required. (5) Permit application, submittal and process- ing. An application for a permit must be made by the property owner, or their authorized agent to the community devel- opment director on forms prepared by the community development director. The ap- plication must require the applicant to submit information necessary for ade- quate review. (6) 71me limit. All completed applications must be acted upon according to established schedules within six months after submit- tal unless an extension is granted by the city council. (7) Fees (application or appeals). For pur- poses of reimbursing the city for adminis- tration of this section, the city will, by IJI u u r� J n 87, Forest Management Plan Liberty on the Lake W 1/2 of Section 31, T-30 N, R 20 W Stillwater, Minnesota April,1998 Responsible Governmental Unit • City of Stillwater 1�)gater 216 North Fourth Street Stillwater, Minnesota 55082 ' (612) 430 -8800 Project Proposer Consultant Contractors Property Developers Company 83rd Avenue North Brooklyn Park, Minnesota 55445 (612) 627 -0823 Westwood Professional Services, Inc. 7599 Anagram Drive IN - Eden Prairie, Minnesota 55344 . (612) 937 -5150 FOREST MANAGEMENT PLAN LIBERTY ON THE LAKE, STILLWATER, MINNESOTA April, 1998 TABLE OF CONTENTS Page PROJECT PURPOSE, DESCRIPTION, AND WOODLAND IMPACTS ............. ..............................1 WOODLANDOVERVIEW ................................................................................... ............................1.. TreeSurvey Results ............................................................................:.:........ ............................1.. DESIGNATED WOODLAND AREAS ................................................................. .............................2. Location and size of Replacement/Forestation tree planting areas ......... ..............................2 List of all replacement trees including species, caliper, and planting method .....................2 METHODS OF TREE PROTECTION ................................................................. .............................3. Location of all protective fencing ................................................................. .............................3. Specialconstruction methods to be utilized .............................................. ..............................3 Locationof all retaining walls ....................................................................... .............................3. Statement explaining why replacement trees are necessary .................... ..............................4 Rationale for selection of replacement/forestation trees .......................... ..............................A CONTROL OF EXOTIC SPECIES ...................................................................... .............................4. ® Westwood Professional Services, Inc. January, 1998 Westwood Professional Services,` Inc. considers the information contained in this document and any attachments to be proprietary. This document and any information contained or referenced herein shall not be disclosed, duplicated, our used in whole or in part for any purpose other than processing the permit applications referred to herein without written permission from Westwood and the Applicant. 1 Westwood Professional Services, Inc. (612) 937 -5150 FOREST MANAGEMENT PLAN LIBERTY ON THE LAKE, STILLWATER, MINNESOTA April, 1998 PROJECT PURPOSE, DESCRIPTION, AND WOODLAND IMPACTS Liberty on the Lake is a residential housing project involving the development of approximately 169 acres of farmland and deciduous woodland along the western shore of Long Lake into single - family residential lots to meet ' the demand for residential housing in the Twin Cities suburbs. The site is located in the W %2 of Section 31, T 30 N, R 20 W, City of Stillwater, Washington County, Minnesota (Exhibit 1). The property is bordered on the east by Long Lake, on the south by a proposed residential development, and on the north and west by farmland and deciduous woodland. The total area of canopy on the property is approximately 22.4 acres with an expected 7.0 acres (31.3 %) proposed to be removed in association with the project. Replacement trees are required at a rate of 10 trees per 1 acre of removed canopy; therefore, the required number of replacement trees for the proposed 7.0 acres of impact is 70 trees. The project proposes to at least meet this requirement through plantings development in association with post - construction landscaping and site development. WOODLAND OVERVIEW The woodland on this property is largely composed of mature oak with other species such as aspen, cottonwood, and birch as significant components along the shoreline and wetter areas. Areas of the property were also planted to pines, spruce and some larch by the property owners. The understory is dominated by buckthorn with some ' elderberry and serviceberry. Canopy density and composition vary across the site and are influenced by the varying topography and associated moisture regimes. In areas of wetlands, box - elder, aspen, paper birch, green ash, and red maple are common. Several distinct plant communities occur on the property which provide differing habitats for ' various species of herbaceous plants, trees and animals. These communities include cattail emergent marsh, hardwood swamp, mature oak woodland, and degenerated oak savanna (Malody 1995). Evidence of human disturbance on the property includes stumps resulting from harvesting and remnants of barbed wire fencing from an era of grazing. The regenerative capacity of the woodland appears to be limited by the intact canopy and the heavy ' buckthom competition in the understory. Tree Survey Results Woodland areas were investigated on the site to determine species composition and conditions. A tree survey was prepared and submitted which inventoried all significant trees by species and diameter on the property. A review was made of historic and researched documents pertaining to the property to determine pre - settlement and previous ' conditions which may have occurred on the site. This information was then applied during replacement and landscaping plant selection. By understanding these habitats, where they occur, and their associated species composition, appropriate planting material selections were made. Investigations were also made to determine the presence of any disease threats to the woodland. No significant problems were observed, but it is noted that the woodland has a large oak component and precautions against oak wilt will need to be followed (Appendix A). �` Westwood Professional Services, Inc. (612) 937 -5150 Liberty Development Forest Management Plan DESIGNATED WOODLAND AREAS Location and size of Rep] aceme nt/Forestation tree planting areas Page 2 April 1998 The total area of canopy on the property is approximately 22.4 acres with an expected 7.0 acres (3.1.3 %) proposed to be removed in association with the project. Replacement trees are required at a rate of 10 trees per 1 acre of removed canopy; therefore, the required number of replacement trees for the proposed 7.0 acres of impact is 70 trees. The project proposes to provide replacement trees in association with post - construction landscaping and site development. List of all replacement trees including species, caliper, and planting method Replacement tree species, quantity and size Quantity Common/Botanical Name Size 5 Hackberry /Celtis occidentalis 1.0 inches Cont. 8 Red Oak/Quercus rubra 1.0 inches Cont. 7 White Oak/Quercus alba 1.0 inches Cont. 6 Swamp White Oak/Quercus bicolor 1.0 inches Cont. 3 Red Maple /Acer rubrum 1.0 inches Cont. 8 Sugar Maple /Acer saccharum 1.0 inches Cont. 19 Bigtoothed Aspen/Populus grandidentata 1.0 inches Cont. 16 River Birch/Betula nigra 1.0 inches Cont. 5 Ironwood/Ostrya virginiana 1.0 inches Cont. 77 Total Replacement Trees 1 "Cont. "refers to "containerized "planting material. Planting notes: 1. Contractor shall provide one year guarantee of all planting materials. The guarantee begins on the date of the Landscape Architect's written acceptance of the initial planting. Replacement plant materials shall also have a one year guarantee commencing upon planting. 2. All plants to be Minnesota -grown and/or hardy. 3. Plants to be installed as per standard AAN planting practices. 4. Use minimum 12" loam planting soil on trees and 6" on shrubs (sides and bottom of hole). 5. Staking of trees optional; reposition is not plumb after one year. 6. Wrap all smooth - barked trees - fasten top and bottom. Remove by April 1. 7. Open top of burlap on BB materials; remove pot on potted plants; split and break apart peat pots. 8. Prune plants as necessary - per standard nursery practice and to correct poor branching. 9. Owner shall be responsible for maintenance after initial watering by Contractor. 10. Plants shall be immediately planted upon arrival at site. Properly heel -in materials if necessary, temporary only. 11. All disturbed areas to be sodded unless otherwise noted; sod to be standard Minnesota -grown and hardy bluegrass mix. 12. Shredded hardwood bark mulch shall be used around all trees. 13. Contractor shall contact Gopher State "One Call" (454 -0002) to verify underground utility locations. 14. Areas to be watered, adjacent to residential lots, by homeowner. Other open areas to be watered by natural rainfall. Westwood Professional Services, Inc. (612) 937 -5150 I I L, —1' H L' Liberty Development Page 3 Forest Management Plan April 1998 Tree planting methods: TREE PLANTING METHOD: Prune out misdirected branches Leave Wders intact Cu)tng and staking is optional: Top of stokes 5 abom ground (mar.) or to first branch. Bottom of stake S(min.) below ground Stalking poets to be 2')a' stained seed or pointed steel delineator posts. ploy 3 posts equidistant around and outside root bas. Secure tree to posts with IS' long poi)prop)lrne of polyeth)•ene. 40 ms.. 1 1/2' VIM strop. %here wrapping is called for. wrap from groundthe upward to &at branches Place 4' depth of specifled mulch over plant pits — do not ple against trunk scarify sides and bottom of hole Set root ball on undisturbed 3ubso7 or compacted " mound matching trees natural grournaine with finished site grade Form 3- deep woterkng baste UWE plant pit with specified backflll so) ' METHODS OF TREE PROTECTION Tree protection methods to be implemented on the Liberty site follow recommendations and guidelines set forth in ' Protecting Trees from Construction Damage, Minnesota Extension Service Publication # FO- 6135 -S (Miller, et.al. 1995, Appendix B). ' Location of all protective fencing Protective fencing will be installed as recommended per Minnesota Extension Service Publication # FO- 6135 -S (Miller, et.al. 1995, Appendix B) or as deemed necessary by contractors and site developers. ` ' Special construction methods to be utilized ' Special construction methods are not anticipated at this time. However, if situations develop recommendations will t be followed as outlined in Minnesota Extension Service Publication # FO- 6135 -S (Miller, et.al. 1995, Appendix B) or as deemed necessary by contractors and site developers. ' Location of all retaining walls Retaining walls to be established on the property will be identified on site plans and built in such a manner as to reliably protect the tree resource by protecting as much of the critical root radius as is feasible. Westwood Professional Services, Inc. (612) 937 -5150 Liberty Development Page 4 Forest Management Plan April 1998 1 Statement explaining why replacement trees are necessary Site development plans will include activities which necessitate the removal of some trees. These development , activities are necessary to meet project goals and provide housing to meet local market demands. The establishment of a trail system along Long Lake and stormwater ponding will increase public enjoyment of this property and protect the quality of the local water resource. ' Rationale for selection of replacement/forestation trees ' Trees to be used in replacement and forestation were selected primarily on the basis of suitability to site conditions. Native species were favored to help retain the historic forest composition on the site. High quality hardwoods such as hackberry were selected for their superior growth form and desirability as both forest and boulevard trees. The oak species were selected because of their dominance of the current canopy and suitability to site conditions. Red ' maple, sugar maple, bigtoothed aspen and ironwood are all native species which are a natural component of mature oak woodlands with isolated wet pockets. River birch will be planted in moderately wet areas and was favored over paper birch because it has a better survival rate after planting and construction disturbance. A large number of shrubs will also be established during landscaping activities. CONTROL OF EXOTIC SPECIES ' It is recognized that buckthorn (Appendix C) occurs on the property in such a degree as to limit the establishment and regeneration of desirable, native shrub and tree species. It is the desire of the developer to determine a method of effective and economic control of buckthorn. At this time such a method has not been identified for the property. It will be difficult to effectively, efficiently, and economically control buckthorn on this site because of the fairly large area of woodland that would need to be treated and the abundance of a buckthorn seed sources in the immediate vicinity. It is not recommended that buckthorn controls be initiated until all or the vast majority of site disturbance has been completed. Attempts to control buckthorn before project completion have a reduced likelihood of success due to the presence of appropriate seedbeds for buckthorn invasion. Project developers will continue to investigate new buckthorn controls that are being developed and their applicability for treatment of this , property. It is anticipated that development of some areas will remove buckthorn from these areas and quick establishment of sod and other ground covers will limit buckthorn reestablishment. The extent of buckthorn on the site will be reinvestigated during and following the various phases of development. u LJ �`r Westwood Professional Services, Inc. (612) 937 -5150 ' yl W si 40 --c --m 4r'- VII eW w "Vji e i o I APPENDIX A Oak Wilt Information I Oak wilt - Ceratocystis fagacearum 1 Oak Wilt x s ?;5�- ,x'11. A r•'�4i�" �����y _- Y � "�" '�.'''cS ^{�2� '" is , 1 •t` � , r Charles O. Rexrodel and Daniel Brown2 Forest Insect & Disease Leaflet 29 U.S. Department of Agriculture Forest Service Pagel of 5 -- ... . ........ .. — - 1Principal Entomol.. ogist, U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station, Delaware, Ohio. 2Forest Pathologist, U.S. Department of Agriculture, Forest Service, Southern Region, State and Private Forestry, Forest Pest Management, Atlanta, Ga. Oak wilt, caused by the fungus Cet atocj stis fagacearum (Bretz) Hunt, kills oak trees. It has been found in 21 States, with considerable damage occurring in the Midwest. It was first recognized as an important disease in 1944 in Wisconsin (fig. 1) where, in localized areas (less than 100 acres (40.4 lia)), over half the oaks have been killed. Surveys in eight Wisconsin counties showed that about 11 percent of the annual growth increase of oak forests was offset by mortality caused by oak wilt. In other States, the fungus kills thousands of trees; however, this loss is only a fraction of the total oak timber volume.• In West Virginia, for example, where predominately oak forests cover 70 percent of the land area, oak wilt losses average less than one tree per square mile each year. Oak wilt has also been reported in Texas - outside its main range. FiLlUre 1. - Distribution ofoak wilt. 1980 http: // willow. ncfes. unin .edu /fidl- oakwilt/oakwilt.litm 1/30/93 Oak wilt - Ceratocystis fagacearum Hosts Page 2 of 5 No species of oak is known to be immune to this vascular disease. Infections have been found in 16 native oak species, including most of those of commercial importance. Species of red oak get the disease more frequently and succumb more readily than white oak. Plantation -grown Chinese chestnuts can also be naturally infected by the oak wilt fungus. Moreover, inoculation experiments have demonstrated that over 35 native and exotic oaks are susceptible, as well as American and European chestnuts, species of chinkapin, tanoak, and several varieties of apple. Symptoms in Red Oak The main period of infection is in the spring, when new vessel wood is being formed. Symptoms in red oak occur as early as May. The leaves turn dull green or bronze, appear water - soaked, wilt, and then turn yellow or brown. Damage occurs from the tip and outer edges toward the midrib and base. Wilting leaves typically curl around the midrib and the line between the bronze and green tissues in individual leaves is very distinct (fig. 2). These symptoms quickly appear throughout the crown, often within a few weeks, and leaves at the ends of branches are shed (fig. 3). Heavy defoliation accompanies leaf wilting and discoloration. Leaves fall in all stages of discoloration. Even entirely green leaves may fall from affected branches. Some affected branches hold green leaves longer than others — sometimes until autumn. Therefore, the crowns of trees with oak wilt are seldom as uniformly brown as those of nondiseased trees that have been poisoned, girdled, or killed by lightning. In dry years, the appearance of trees with oak wilt may be confused with that of trees with drought symptoms. The disease progresses rapidly, and some trees die within 1 or 2 months after the onset of symptoms. Most trees die within a year. Sprouts frequently grow from the bole and larger http: // willow. ncfes. umn. edu /fidl- oak,,N�iIt /oak%N,ilt.htni 1/30/98 u L L� n Oak wilt - Ceratocystis fagacearum Page 3 of 5 branches during the year of defoliation or the following year. Symptoms in White Oak mats (fig. 4) are commonly associated with red oaks in some of the country, especially Wisconsin, Minnesota, Iowa, and These mats, composed primarily of mycelium, form beneath . Sometimes the mats raise and crack the bark giving off a ing odor that attracts insects. Discoloration of infected annual seldom. a symptom of oak wilt in the red oak group. The disease symptoms are much more variable in white oaks, although the foliage symptoms are often the same. In a few, particularly bur oaks, symptoms are essentially the same as in the red oaks, and the tree may die within one growing season. Usually, however, white oaks die slowly. Only one or two branches may show symptoms and die in a year. If the fungus persists, a few branches are killed in a season; and over several years, the tree de clines and may eventually die. Some white oaks seem to recover from the disease, but may harbor the pathogen and serve as symptomless reservoirs. White oaks, unlike the red, frequently have discolored infected annual rings when diseased. Fungus mats seldom appear on white oaks. Natural root grafts and insect vectors spread the oak wilt fungus from diseased to healthy trees. Healthy oaks growing next to infected ones become infected through their roots. Root grafts (fig. 5) offer a path to transmit the fungus and are a major factor in the spread, especially in areas with deep, sandy soils and dense, pure stands of red oaks. The fungus overwinters as mycelium in still- living, infested trees and as fungus pads on dead trees. The fungus can be spread more than a mile by at least two groups of insects: sap and bark - feeding beetles. caused by fiingus neat on bole of tree Figure 7 - Sap feeding beetle behveen oaks. When the fungus mats enlarge and crack the bark (fig. 6), the emitted odor attracts insects such as sap- feeding beetles in the family Nitidulidae (fig. 7). When the beetles feed on the mats of the infected tree, fungus spores adhere to their bodies. As the beetles move from diseased trees to wounds on healthy oaks, the disease- causing spores are transmitted to a new host. ' littp: / /willow.ncfes. Limn .edu /fidl- oak-%vilt/oakNvilt.htm 1/30/98 Oak wilt - Ceratocystis fagacearum Page 4 of 5 Oak bark beetles, Pseudopityophihorus spp., also transmit the fungus. They breed abundantly beneath the bark of oak wilt - infected trees (fig. 8). After egg laying, parents emerge carrying spores and feed on healthy oaks (fig.9). When the larvae hatch and develop into M"=,�� _ adults, they also carry infective spores and move to healthy trees. Those bark beetles that r n�• overwinter in infected trees can transmit the fi '= spores to healthy trees when they move.about Figure 8 - Oak bark beetle Figure 9 - Oak bark beetle the following spring. egg galleries. feeding on an oak twig When transmitted, the pathogen spreads rapidly within xylem vessels. Besides the bark beetles, a number of other contaminated insects have been collected from diseased trees. Whether or not they spread the pathogen has not been conclusively proven, however. Control Unfortunately, there is no known way to save an oak tree infected by the oak wilt fungus. The only way to maintain healthy trees is through prevention. Early detection and prompt removal of dead or dying trees and breaking root grafts between diseased and healthy trees are essential. Mechanical and chemical barriers between diseased and healthy trees can halt the spread of the oak wilt fungus through root grafts. A trencher or vibrating plow can be used to cut or break the tree roots down to a depth of 2 to 4 feet (0.6 to 1.2 m). Soil fumigants can also be used to kill the connecting roots between trees. Detailed procedures for constructing mechanical and chemical barriers are given in the referenced pamphlet on oak wilt by French and Stienstra. Promptness is important. The sooner the root grafts between diseased and healthy trees are destroyed, the better the chances for saving the trees nearby. To suppress overland spread of the fungus, control must be aimed at destroying the source of inoculum - the diseased tree - at the proper time. All trees that die in any given year should be checked carefully for fungus mats and oak bark beetle colonization by April 1 of the following year. If the mats or beetles are present, the entire tree should be burned, chipped, or covered with plastic for 60 days. In the Eastern United States, about 50 percent of diseased trees contain beetles and about 25 percent produce mats; however, these figures may vary, depending on geographic location. Fresh pruning wounds may attract beetles contaminated with oak wilt fungus. Because of this, avoid unnecessary pruning and prune in winter whenever possible. Trees should not be pruned during April, May, or June or whenever the beetles are active. If shade or forest trees are suspected of having oak wilt, contact the county agricultural agent, State agricultural experiment station, or local forester for control recommendations. References Anderson, R. L.; Skilling, D. D. Oak wilt damage: a survey in central Wisconsin. Sta. Pap. 33. St. Paul, MN: U.S. Department of Agriculture, Forest Service, North Central Forest Experiment Station; 1955: 1 -11. French, D. W.; Stienstra, Ward C. Oak wilt. Minneapolis, MN: University of Minnesota Agricultural Extension Service; 1980; Folder 310:11. http: // willow. ncfes. tinin .edu /fidl- oak«•ilt/oakwilt.htm 1/30/98 ' Oak wilt - Ceratocystis fagacearum Rexrode, Charles 0.; Jones, Thomas W. Oak bark beetles - important vectors of oak wilt. J. For. 68: 294 -297; 1970. True, R. P.; Bamett, —H. L.; Dorsey, C. K.; Leach, J. G. Oak wilt in West Virginia. Bull. 448T. Morgantown, WV: West Virginia University Agricultural Experiment Station; 1960: 119. Revised October 1983 Retum to the Forest and Tree Health Publication http://willow.ncfes.unm.edu/fidl-oakwilt/oakwilt.htm Page 5 of 5 1/30/98 APPENDIX B Minnesota Extension Service Publication #FO- 6135 -S Contents.... The Roof of the Matter ................... l Plan Aheadl ............ .............................:2 _ - ... •. - Minimize the'Impact of - - - - Construction Activities ....................6 SITE CLEARING SOIL DAMAGE GRADE CHANGES _ W__ _ w....__. 6 _ EXCAVATION— w _ _ _ _._......7 PAVEMENT 7 - Symptoms.of Construction - °- Damage.................. ............................... 9 - Treatment of Damaged Plants ... .............................10 - - WATER 10 EXCAVATIONOf BACK - FILLED TREES_.._......_ _..._...._........_._ ....... 10 - AERATION ....._._....10 = FERTILIZER 11 PRUNING AND WOUND REPAIR_ . m._.. .. __.11 OAK WILT __ ..._ .__ ___ ..___ ._....._._:...11 _ OTHER INSECT AND' DISEASE PROBLEMS .;.__._ .... _ ......... __._. ................. 11 ` TREE REMOVAL..___....._ 1 Conclusion ...:......... .............................12 -- To order additional copies of this _. publication, fax or write: Minnesota Extension Service - Distribution Center 20 Coffey Hall 1420 Eckles Avenue _ , Saint Paul MN 55108 -6064 FAX Number (612).625-2207 re you planning to build or remodel a home? Before you start,•consider the impact of construction on ' plants. Trees and shrubs contribute to property valites.by enhancing appearance, reducing noise, cutting energy costs, screening - unsightly views, and attracting songbirds and other wildlife. 'Unfortunately, plants meant to be part of a home's permanent'. landscape often are needlessly 'damaged or killed during construction. Careful planning and coordination with a tree- 'care specialist and your builder can reduce damage and save you the trouble and expense of 'treating or removing injured plants. This publication explains some things that landowners can do to minintize the impact 'of construction on trees. It describes landscape protection plans, special construction 'techniques, symptoms of dam- age, and treatment strategies. C Ithoiigh the information resented focuses on trees, it also *can be applied to protecting Ihrubs. The Root I of the- Matter ... Trees can be damaged or killed by a wide variety of construction activi- ties. Some practices lead to obvious injuries such as broken branches or turn bark. Open wounds of this type deplete a plant's energy resources and provide entry points for insects, or for diseases such as oak wilt. y � •• .� .��' �.�. � .viii �. Protected' Root Zone ' (PRZ). - y dripline Figure 1. One common method used to define a tree's protected root zone (PRZ) is to consider it to be the part of the roots that lie directly below its branches within on area known as the dripline. The worst damage, however, often remains hidden underground. Roots are one of the most vital parts of a tree. They are responsible for nutrient and water uptake, store energy, and anchor the plant. Because they are so important, it is critical that you protect roots that lie in the path of construc- tion. Trees are never the same shape below ground as they are above, so it is difficult to predict the length or location of their roots. However, approximately 90 -95 percent of a tree's Hiring ar Tree Care SpecidI ' Each consiruciionsite jh a's uriique set of soil, tree spe �er'or.arbon construction damiige {This perso�i�` will be familiar rnr�th the. growth ' q aracteristics and corilmon probleuis faced by tree species ins your area.. -He or the can help'�rozi evaluate plant health and the 'likely impacts of construction- activities. 4 ' •for your.ownprotection: "''� �'•`'-- ''i?,- ire only professionals'who are± part of an established business: -= `listed in the phone'book ✓ ask`for references , make sure the person'you•hiie:' carries insurance for property,'.., `., damage, personal liability, and:= workers compensation. , Membership i i.the National'. r Aiborist Association, Minnesota. -Society of Arboriculture, "or ,`'i International Society of Arboriculture or certification .fro `nrn the International Society of.•.: ='.-r ' Arboriculture are good indicators:: r of reputable businesses. root system is in the top three feet of soil, and more than half is in the top one foot. The part of this root system in which construction damage should be avoided is called the Protected Root Zone (PRZ). One common method used to identify the PRZ is to define it as the "dripline" —the area directly below the branches of the tree (Figure 1). However, many roots extend beyond the longest branches a distance equal to two or more times the height of the tree. For this reason you should protect as much of the area beyond the dripline as possible. 2 Figure 2. Approximate a tree's protected root zone by calculating the _critical root radius (CRR). First, measure the tree diameter in inches at breast height(DBH). Then multiply that number by 15. Express the result in feet. Example: DBH = 8 inches CRR -12 feet Measure diameter (width) `3 = dbh dbh x 15 = critical root radius Protected Root Zone - (PRZ) 4.5 feet cr�t�ca/ra9t'rad�0s dripline - Unfortunately, on most sites space s limited and this rule must be bent. .ust how close an activity can come .vithout seriously threatening the survival of a tree depends upon the species, the extent of damage, and the plant's health. Some healthy trees can ;urvive after losing 50 percent of their -oots. However, other species are !xtremely sensitive to root cutting, wen odtside the dripline. Table 1 shows the relative sensi- ivity of various tree species to root iisturbance. If possible, disturb no nore than 25 percent of the roots vithin the dripline for any tree, )rotect intermediate species to the hipline, and allow extra space beyond he dripline for sensitive species. For 11 trees, avoid needless or excessive .amage. A qualified tree -care spe- ialist can help you determine how such root interference a particular -ee can tolerate. When dealing with trees that have een growing in the forest or that naturally have a narrow growth habit, an approach called the "critical root radius" is more accurate than the dripline method for determining the PRZ. This is particularly true for columnar trees and for those where competition has reduced the canopy spread. To calculate critical root radius, begin by measuring the diameter at breast height (dbh). This is done by measuring the tree's trunk diameter (thickness) at a point 4.5 feet above the ground. The measurement should be done in inches. For each inch of dbh, allow for 1.5 feet of critical root radius. For example, if a tree's dbh is ten inches, then its critical root radius is 15 feet (10 x 1.5 =15). The PRZ is an area around the tree with a diameter of 30 feet (2 x radius), and is the area in which a critical amount of the tree's roots maybe found. Whenever possible, isolate this area from con- struction disturbance (see Figure 2 above). flan MW d Ahead! You'll save time and money if you develop a landscape protection plan before construction begins.' Careful planning will help you avoid the. expense and heartache of later repair- ing or removing trees loca_ted.too close to construction activities." These steps will help you create a successful landscape protection plan: 1. Mark construction zone boundaries. Obtain a complete set of site development plans, including the proposed location of buildings, driveways, sidewalks, and utility lines. Ask the builder or architect to mark areas where heavy equipment will be used, where soil will be permanently added or removed and to what depth, and where fill and building materials will be temporarily stockpiled. Use a measuring tape, stakes, and string to temporarily mark the boundaries of construction activi- ties on the site. 2. inventory trees on the site. Record the location, size, and health of each tree. Wilted leaves, broken or dead limbs, trunk rot, and thin tops are all signs of stress. Trees that are overmature, display poor form, lean heavily over future build- ings, or have severe insect or disease problems (Figure 3) should be marked for removal prior to construction. . Also mark trees that need pruning to make room for future structures and construction equipment. . 3. Select the trees to be saved. Examine the site carefully and note how each tree fits into the future landscape. Keep in mind that the builder may be able to shift the location of a building, utility line, or driveway. Although local ordinances I �I n Figure 2. Approximate a tree's protected root zone by calculating the _critical root radius (CRR). First, measure the tree diameter in inches at breast height(DBH). Then multiply that number by 15. Express the result in feet. Example: DBH = 8 inches CRR -12 feet Measure diameter (width) `3 = dbh dbh x 15 = critical root radius Protected Root Zone - (PRZ) 4.5 feet cr�t�ca/ra9t'rad�0s dripline - Unfortunately, on most sites space s limited and this rule must be bent. .ust how close an activity can come .vithout seriously threatening the survival of a tree depends upon the species, the extent of damage, and the plant's health. Some healthy trees can ;urvive after losing 50 percent of their -oots. However, other species are !xtremely sensitive to root cutting, wen odtside the dripline. Table 1 shows the relative sensi- ivity of various tree species to root iisturbance. If possible, disturb no nore than 25 percent of the roots vithin the dripline for any tree, )rotect intermediate species to the hipline, and allow extra space beyond he dripline for sensitive species. For 11 trees, avoid needless or excessive .amage. A qualified tree -care spe- ialist can help you determine how such root interference a particular -ee can tolerate. When dealing with trees that have een growing in the forest or that naturally have a narrow growth habit, an approach called the "critical root radius" is more accurate than the dripline method for determining the PRZ. This is particularly true for columnar trees and for those where competition has reduced the canopy spread. To calculate critical root radius, begin by measuring the diameter at breast height (dbh). This is done by measuring the tree's trunk diameter (thickness) at a point 4.5 feet above the ground. The measurement should be done in inches. For each inch of dbh, allow for 1.5 feet of critical root radius. For example, if a tree's dbh is ten inches, then its critical root radius is 15 feet (10 x 1.5 =15). The PRZ is an area around the tree with a diameter of 30 feet (2 x radius), and is the area in which a critical amount of the tree's roots maybe found. Whenever possible, isolate this area from con- struction disturbance (see Figure 2 above). flan MW d Ahead! You'll save time and money if you develop a landscape protection plan before construction begins.' Careful planning will help you avoid the. expense and heartache of later repair- ing or removing trees loca_ted.too close to construction activities." These steps will help you create a successful landscape protection plan: 1. Mark construction zone boundaries. Obtain a complete set of site development plans, including the proposed location of buildings, driveways, sidewalks, and utility lines. Ask the builder or architect to mark areas where heavy equipment will be used, where soil will be permanently added or removed and to what depth, and where fill and building materials will be temporarily stockpiled. Use a measuring tape, stakes, and string to temporarily mark the boundaries of construction activi- ties on the site. 2. inventory trees on the site. Record the location, size, and health of each tree. Wilted leaves, broken or dead limbs, trunk rot, and thin tops are all signs of stress. Trees that are overmature, display poor form, lean heavily over future build- ings, or have severe insect or disease problems (Figure 3) should be marked for removal prior to construction. . Also mark trees that need pruning to make room for future structures and construction equipment. . 3. Select the trees to be saved. Examine the site carefully and note how each tree fits into the future landscape. Keep in mind that the builder may be able to shift the location of a building, utility line, or driveway. Although local ordinances I �I n t Species Root l Tablet Tree Characteristics t eumbers in column headings correspond to numbered sources in the ference section. Values in parentheses reflect the authors' or technical advisors' P. nions. Hazard Tree Rating refers to the relative potential for a tree to ecome hazardous. For a tree to be considered hazardous, a potential 'target'(e.g., a house, a sidewalk, or other trees) must be present. A high hazard tree rating does not imply that the tree will always fail. *'Landscape Value refers to the relative value of each species in Minnesota based on hardiness, form, color, growth habits, flowering and fruiting characteristics, structural strength, longevity, insect and disease resistance, maintenance requirements, and general desirability. Sev:,rance6 Soil Compaction & Flooding 6 Soil pH Preference$ Mature Tree Height (feet)8 Mature Crown Spread (feet)8 Hazard Tree Rating *7 Damage- Causing Roots Landscape Value * *1 Northern white cedar Tolerant Tolerant 6.0 -8.0 40 -50 10 -20 Cow - High Balsam fir Tolerant Tolerant -4.0 -6.0 40 -60 20 -35 Medium Medium White fir Tolerant Sensitive 4.0 -6.5 50 -75 10 -20 Medium - High Tamarack:: Tolerant : Tolerant 4.0 -7.5 ; 50 -75 15 -25 Medium - High White pine' Tolerant Sensitive 4.5 -6.5 80 -100 50 -80 Medium - High Jack pine., ' Tolerant Sensitive , 4.5-6.5',.- 30 -80 ._ 20 -30 High.; - Low' Red pine. Tolerant Sensitive 4.5 -6.0 _ 50 -80 20 -40 (Medium) - Medium Scotch pine. (Toleiarit). (Sensitive) 4.0 -6.5 .: 60- 100" ' 30 -50 - Medium, Medium" Eastern redcedar Tolerant Sensitive 4.7 -7.8 40 -50 10 -20 Low - Low Black spruce'.'-. Tolerant Tolerant 3.5 -7.0 -'30 -70 - 15 -30 (Medium) - Low,-- Colorado spruce Intermediate Tolerant 4.64.5 50 -100 20 -30 Medium . - High White spruce _ 'Tolerant Intermediate 4.5 -7.5 40 -80 20 -30 , Medium - Medium Black ash Tolerant Tolerant 4.1 -6.5 40 -70 30 -60 (Medium) - Medium Green ash Tolerant Tolerant 6.0 -73 - : • 30 -60 30=50 Medium - Low White, ash Tolerant Intermediate 5.0 -7.5 70 -80 50+ (Medium) - Medium Bigtootll aspen Tolerant Sensitive 4.8 -6.3 50 -75 20 -35 'Medium Yes Low Quaking aspen Tolerant Sensitive 4.8 -6.5 40 -60 20 -35 Medium Yes Low Blue beech Sensitive Sensitive 6.5 -7.5 20 -30 15 -20 _ Low - High Paper birch Intermediate Sensitive 5.0 -8.0 50 -70 30-50 Medium - Medium River birch _ Tolerant Tolerant 4.0 -6.5 40, -70 30 -50 Low•' - High Yellow birch Intermediate Sensitive 4.5 -8.0 50-70 25 -50 Medium - Medium" Boxelder Tolerant Tolerant 6.5 -7.5 40 -60 35 -50 High Yes " Low Ohio buckeye Intermediate Intermediate 6.1 -6.5 30 -50 30 -40 Medium Yes Medium Butternut Sensitive Intermediate 6.6 -8.0 40 -60 50 -60 (Medium) - Medium Catalpa Intermediate Tolerant 6.1 -8.0 50 -80 30 -50 Medium - Medium Black cherry Intermediate Sensitive 6.0 -7.5 50 -70 40 -50 Low' - Low Kentucky coffeetree Intermediate Intermediate 6.5 -7.5 50 -80 40 -50 Low - High Eastern cottonwood Tolerant Tolerant 5.5 -8.0 80 -100 80 -100 High'. Yes Low Red -osier dogwood Tolerant Intermediate 6.1 -8.5 8 -10 10 -12 (Low) - Medium American elm Tolerant Intermediate 5.5 -8.0 70 -100 70 -150 Medium Yes Low Slippery elm (Tolerant) (Intermediate) 6.6 -8.0 60 -70 40 -60 Medium Yes Low Hackberry Tolerant Intermediate 6.6 -8.0 30 -130 50+ Low • - High Hawthorn Intermediate Intermediate 6.0 -7.5 20 -40 20 -30 Low - High Bitternut hickory Intermediate Intermediate 6.0 -6.5 40 -75 30+ (Medium) - Medium Honeylocust Tolerant Intermediate 6.0 -8.0 50-75 50 -75 Medium Yes Medium Ironwood Sensitive Sensitive 6.1 -8.0 25 -50 20 -30 (Low) . - High ' Basswood (Intermediate) Sensitive 5.5 -7.3 70 -100 50 -75 (High) - Medium Black locust Tolerant Sensitive 4.6 -8.2 30-60 20 -50 (Medium) - Low Red maple Tolerant Tolerant 4.5 -7.5 50 -70 40 -60 Medium Yes High Silver maple Tolerant Tolerant 5.5 -6.5 60 -90 75 -100 High Yes Low Sugar maple (Intermediate) Sensitive 5.5 -7.3 60 -80 60 -80 Medium Yes High Mountain ash Tolerant • Intermediate 4.0 -7.0 15 -25 15 -25 Medium - High Black oak Sensitive Sensitive 6.0 -6.5 50 -80 50 -70 (Medium) - High Bur oak (Tolerant) Intermediate 4.0 -8.0 70-80 40 -80 Low - High Northern pin oak Sensitive Sensitive 5.5 -7.5 50 -75 30 -50 (Medium) - Medium Red oak Tolerant Sensitive 4.5 -7.0 60 -80 40 -50 (Medium) - High - Bicolor oak (Intermediate) Tolerant 6.0 -6.5 60 -70 40 -50 Low - High White oak Sensitive Sensitive 6.5 -7.5 60 -100 50 -90 Lbw. - High Wild plum Tolerant Sensitive 6.5 -6.6 20 -25 15 -25 Low - Medium Serviceberry Intermediate Sensitive 6.1 -8.5 6-35 6 -15 (Low) - High Black walnut Sensitive intermediate 6.6 -8.0 70 -100 60 -100+ Medium - Medium Black willow Tolerant Tolerant 6.5 -8.0 30 -60 20 -40 High Yes Low t eumbers in column headings correspond to numbered sources in the ference section. Values in parentheses reflect the authors' or technical advisors' P. nions. Hazard Tree Rating refers to the relative potential for a tree to ecome hazardous. For a tree to be considered hazardous, a potential 'target'(e.g., a house, a sidewalk, or other trees) must be present. A high hazard tree rating does not imply that the tree will always fail. *'Landscape Value refers to the relative value of each species in Minnesota based on hardiness, form, color, growth habits, flowering and fruiting characteristics, structural strength, longevity, insect and disease resistance, maintenance requirements, and general desirability. driveway. Although local ordinances differ, driveways and utility lines . don't always have to be straight, and homes don't always have to be in the center of the lot (Figure 4). If the PRZ of a tree falls inside the construction zone, you should seriously consider changing the original design, adding protection measures, or removing the tree before construction begins. ✓ Save-6 y the best,,remove the •� \ w l Y rest It is "e nsive for: thee::, 2 ... builder to workaround trees, and it also is expensiv .to y2 remove llama g. -ed trees after "' ` -construction has been com �, ✓: LJniieistarid the characteris�cs:of t �' � �oizr trees o get the advice of � `` §omeone who does :rffyou know. aiiouEyour frees yqu can elg; insure -th&k.)survival and im- prove the,future site'appeararice.. ✓ Select tree -species thaf "fit theE; f::: spatial constraints of the site ,-4- (Table 1); iemenibering that trees. grow.throughouttheii ixves: Be -: sure. to consider;overhead powerluies ✓ Young, small trees tend to survive'disturbance better than old, large frees.:.Large trees.T:K ". 1niost never survive Within five'.. ;,--feet: of a new building and z : .should not lie kept �' r , 'Healthy youngtree's that fall -the eohstruction:zone may be`; saved by,transplanting. ` % Don !t put all your eggs in one; ;- ° basket!. Save ainixtuie of tree`::'; 1 ' - species Eo'safeguard your landscape against contagi6us'4 t diseases or insects: ✓ Improve free survival by savir.ig groups of trees rather than individuals. _ 17 Figure 3. Careful planning may ovoid the creation of hazardous tree situations such as damaged trees located too close to the house or dangerous overhanging limbs. . •,.. ,. f.:.. . r� � s Figure 4. You may be able to save some trees by siting the new construction away from the center of the lot. 'I it fl , 4 driveway. Although local ordinances differ, driveways and utility lines . don't always have to be straight, and homes don't always have to be in the center of the lot (Figure 4). If the PRZ of a tree falls inside the construction zone, you should seriously consider changing the original design, adding protection measures, or removing the tree before construction begins. ✓ Save-6 y the best,,remove the •� \ w l Y rest It is "e nsive for: thee::, 2 ... builder to workaround trees, and it also is expensiv .to y2 remove llama g. -ed trees after "' ` -construction has been com �, ✓: LJniieistarid the characteris�cs:of t �' � �oizr trees o get the advice of � `` §omeone who does :rffyou know. aiiouEyour frees yqu can elg; insure -th&k.)survival and im- prove the,future site'appeararice.. ✓ Select tree -species thaf "fit theE; f::: spatial constraints of the site ,-4- (Table 1); iemenibering that trees. grow.throughouttheii ixves: Be -: sure. to consider;overhead powerluies ✓ Young, small trees tend to survive'disturbance better than old, large frees.:.Large trees.T:K ". 1niost never survive Within five'.. ;,--feet: of a new building and z : .should not lie kept �' r , 'Healthy youngtree's that fall -the eohstruction:zone may be`; saved by,transplanting. ` % Don !t put all your eggs in one; ;- ° basket!. Save ainixtuie of tree`::'; 1 ' - species Eo'safeguard your landscape against contagi6us'4 t diseases or insects: ✓ Improve free survival by savir.ig groups of trees rather than individuals. _ 17 Figure 3. Careful planning may ovoid the creation of hazardous tree situations such as damaged trees located too close to the house or dangerous overhanging limbs. . •,.. ,. f.:.. . r� � s Figure 4. You may be able to save some trees by siting the new construction away from the center of the lot. 'I it fl 4. Protect the trees you plan to save. Develop a map with the builder or architect showing the location of trees 90 be protected and the safest route for cress to the building zone. Then. install bright orange polypropylene encing and post "Off Limits" signs at R he PRZ of the trees you plan to save Figure 5). Your primary objective is to protect delicate root systems, so Irovide your trees with as much space s possible. Make sure all construction workers know that nothing inside this rtherwise ea is to be raked, cut, stored, or disturbed. A landscape protection contract signed by the uilder and all contractors will help knotographs sure compliance. Take several of the site before con- struction begins to document the protection methods used and the ondition of individual trees. �Prepare the trees . for construction disturbance. 1 You'll boost your trees' chance for survival if you make sure they're as gorous as possible before construc- n begins. Regularly water the trees rainfall is not adequate. Fertilize them if soil tests or deficiency symp- ms indicate they are nutrient ressed. (For soil test information, contact your county extension agent or 11 the University of ;Minnesota's Soil sting Lab at 612- 625- 3101.) Prune 5ranches that are dead, diseased, zardous or detrimental to the ant's natural form. 6. Monitor the construction process. Visit the site regularly and inspect ltrees. Your presence alerts work- of your concern for the careful atment of the trees. Should damage occur, begin repairs as soon as pos- le. Immediately inform the builder any violations in the landscape protection contract and photograph I Figure S. Put up fences and signs around trees you want to save to alert construc- tion workers to damage potential. - ........ �,. y 1 �a tiro•' ••�;/I +•,';��5►��� �::�ty ; � the damage. Damage penalties should be based on the appraised value of each plant as described in Landscape Tree Valuation (Minnesota Extension Service publication NR -FO- 7026). Insist that protective fences remain in place until all construction workers have left the site. 7. Make a final inspection of the site. After construction has been completed, evaluate the condition of the remaining trees. Look for signs of damage or stress. It may take several years for severe problems to appear. Careful monitoring and preventive treatment (e.g., watering) may help minimize damage. i 5 4. Protect the trees you plan to save. Develop a map with the builder or architect showing the location of trees 90 be protected and the safest route for cress to the building zone. Then. install bright orange polypropylene encing and post "Off Limits" signs at R he PRZ of the trees you plan to save Figure 5). Your primary objective is to protect delicate root systems, so Irovide your trees with as much space s possible. Make sure all construction workers know that nothing inside this rtherwise ea is to be raked, cut, stored, or disturbed. A landscape protection contract signed by the uilder and all contractors will help knotographs sure compliance. Take several of the site before con- struction begins to document the protection methods used and the ondition of individual trees. �Prepare the trees . for construction disturbance. 1 You'll boost your trees' chance for survival if you make sure they're as gorous as possible before construc- n begins. Regularly water the trees rainfall is not adequate. Fertilize them if soil tests or deficiency symp- ms indicate they are nutrient ressed. (For soil test information, contact your county extension agent or 11 the University of ;Minnesota's Soil sting Lab at 612- 625- 3101.) Prune 5ranches that are dead, diseased, zardous or detrimental to the ant's natural form. 6. Monitor the construction process. Visit the site regularly and inspect ltrees. Your presence alerts work- of your concern for the careful atment of the trees. Should damage occur, begin repairs as soon as pos- le. Immediately inform the builder any violations in the landscape protection contract and photograph I Figure S. Put up fences and signs around trees you want to save to alert construc- tion workers to damage potential. - ........ �,. y 1 �a tiro•' ••�;/I +•,';��5►��� �::�ty ; � the damage. Damage penalties should be based on the appraised value of each plant as described in Landscape Tree Valuation (Minnesota Extension Service publication NR -FO- 7026). Insist that protective fences remain in place until all construction workers have left the site. 7. Make a final inspection of the site. After construction has been completed, evaluate the condition of the remaining trees. Look for signs of damage or stress. It may take several years for severe problems to appear. Careful monitoring and preventive treatment (e.g., watering) may help minimize damage. i -mvz ®! Minimize the �,. 1 impact of Construction Activities In addition to protecting the PRZ, there are other ways in which you can reduce the impact of construction activities on your trees.- Some of these are relatively simple; others can be extremely expensive. Carefully consider the importance of each tree to the future appearance of the site and consult a tree -care specialist before deciding whether protective measures are worth the cost. SITE CLEARING When you remove a large number of trees, you expose the remaining plants to new conditions. Sudden increases in amounts of sunlight and wind will shock many of your trees. It is not uncommon to find scorched leaves, broken branches, and uprooted trees after a site is cleared. Although some of these problems are tempo- rary, they may compromise tree health when coupled with additional con- struction damage. You can avoid sun and wind stress by saving groups of trees rather Figure 6. A root system bridge will help protect trees in the path of construction vehicles. 6 t than individuals. When possible, remove the unwanted plants in: winter after the leaves have fallen. Dormant plants are less susceptible to damage, and frozen ground helps protect roots. Bulldozers should not be used to remove trees near plants to be pre- served. Heavily wooded sites should be gradually thinned over two to three years to reduce removal shock on remaining plants. This is especially important in dense pine, spruce, or fir forests. SOIL DAMAGE Soil compaction is the single largest killer of urban trees. Tree roots need loose soil to grow, obtain oxy- gen, and absorb water and nutrients. Stockpiled building materials, heavy machinery, and excessive foot traffic all damage soil structure. Lacking good soil aeration, roots suffocate and tree health declines. Prevent soil compaction by carefully selecting storage areas and traffic routes (the future driveway is a good choice for both) and installing protective fences and signs. If you can't reroute traffic, install root system bridges (Figure 6) or spread several inches of wood chips on the soil within the PRZ. Heavy mixing trucks can be kept off tree roots by transport- ,. steel plate railroad ties, placed radi ally to trunk ing concrete from the truck through conveyor pipes. Improper handling or disposal of materials used during construction also can harm roots. For example, wood products treated with penta- chlorophenol and creosote can be deadly to tree roots; CCA- treated timber (greenish color) is a better alternative. Ask the builder about the materials to be used on the site and read product labels. Chemical. spill damage can be prevented by filling gas tanks, cleaning paintbrushes and tools, and repairing mechanical .- equipment well outside tree PRZs. Insist that all building debris and chemical wastes be hauled away for proper disposal, and not burned or buried on the site. Finally, avoid changes in soil pH (acidity). Increases in pH are particu- larly dangerous to many species (Table 1). Alkaline clays or limestones should not be used for fill or paving, and concrete should be mixed on a thick plastic tarp or outside the site. Mixing trucks should never be rinsed out on the site. GRADE CHANGES Moving large amounts.of soil within the PRZ usually kills a tree. Except where absolutely necessary, avoid disruptions to the natural contour of the site or shift them well outside the PRZ. Soil additions compact the soil around a tree and often raise the water table. You may be able to protect compaction- tolerant trees (Table 1) from additions of six inches or less of soil by using a porous fill within the PRZ. Porous fill can be made by mixing one part loam, one part coarse sand, and one part shredded bark. Deeper fills require more expen- sive measures. A retaining wall beyond the PRZ may protect some trees (Figure 7a). These walls preserve much of the original root system and redirect excess water away from sensitive plants. Your tree -care specialist may suggest other, more elaborate measures for protecting trees fl 1 l7 tnat must be covered with soil close to t trunk. However, as a general rule best to remove trees that would be ied by 24 inches or more of fill around the base. LCutting the soil away from a tree oves vital feeder roots, eliminates nutrient -rich topsoil, and often lowers water table. Damage caused by llow cuts (less than two inches) at :east three feet away from the base of t tree maybe minimal, but still can a shock to a tree's vigor. If pos- le, avoid making the cut during hot, I ry weather; water the tree (undis- led portions) before and after soil oval; and allo'• :- only hand digging aside the PRZ. A shallow layer of jlch (pine needles, wood chips, or rsely chopped twigs and bark) and ,pan root cuts will help wound iu re and regrowth. Deeper cuts hin the root zone will require fs ure 7. If you change the grade within e root zone, use retaining wall to keep much of the original grade as possible. a) backfilling; b) cutting. I . ' • �+" Pro Ro toilrem- emoved beyond le taining wall �T construction of a retaining wall no closer than the limit of the PRZ (Figure 7b). EXCAVATION As much as 40 percent of a tree's root system could be cut during the installation of a nearby utility line. This reduces water and nutrient uptake, and may compromise the stability of the tree. If it is not possible to relocate the utility line outside the tree's PRZ, you can reduce root- damage by as much as 25 percent by tunneling under the tree's root system (Figure 8). When digging a trench near a tree, begin tunneling when you encounter roots larger than one inch in diameter. Trenching for building founda- tions also poses a danger to nearby trees. Although not often used in E� �r 7a. Backfiliing behind �. retaining wall `tectedr: c' 4 Ot Zone (PRZ)` S 1 y. �• k •-�� :. kept a t`origrnal grade, .; � 1 / r' ' Trenching ' kills ' - roots. r .rrc t JY -L Y r M Tunneling two feet below y, .'gradereducesroot domage "�t �zf`: Figure 8. Protect roots from damage when laying utility lines by tunneling rather than trenching. Minnesota, posts, pilings or I -beams - sometimes can be substituted for foundation walls and footers on . homes (Figure 9). Drilling single holes as opposed to cutting deep trenches saves many critical roots. For all digging operations, insist that exposed roots be cut cleanly to. promote quick wound closure and regeneration. Vibratory plows, chain trenchers, and hand tools do a better job at this than bulldozers and back- f •� post , ,, 00 .. Of 'a• bi f e { bbeam Figure 9. You can minimize damage to trees near foundations by using posts, pillars, or 1 -beams rather than foundation wolls. hoes. Minimize damage by avoiding excavation during hot, dry weather; keeping the plants well watered before and after digging; and covering exposed roots with soil, mulch, or damp burlap as soon as possible.'. PAVEMENT. Sidewalks and driveways located too close to a. tree endanger its health and may threaten pavement stability. Factors such as frost heaving, poor drainage, and pavement flaws give . roots an opportunity to expand, gain a foothold, and cause damage. Homeowners are faced with costly repair bills and potential liability for the hazardous situation that develops. These problems can be avoided if you consider the spatial needs of a tree and its root system when designing the layout of new sidewalks and driveways. Just how much space is required depends upon a tree's sensitivity to root cutting and its future size (Table 1). It's best to locate sidewalks and driveways outside the anticipated PRZ. At a minimum, walkways should be at least three feet from the trunk of a tree; driveways may cover up to half the distance from the tree's PRZ to its trunk, as long as no excavation occurs. No tree should be boxed into an area less than eight feet by eight feet by three feet, with larger trees receiving at least 300 cubic feet of root /soil volume. You can minimize disruption by using alternatives to conventional paving. materials. In some communi- ties, brick or flagstone walkways on sand foundations can be substituted for concrete (Figure 10). These materi- als protect soil pH and allow water and oxygen penetration. Preserve natural contouring by spanning uneven areas with wooden walkways elevated on posts. Elevated decks are excellent alternatives to concrete porches. Where additional pavement strength is needed (e.g., driveways), concrete requires less excavation than asphalt. Ask your builder about raised pavement techniques near valuable trees. 8 ELM " """ chips /gravel Figure 10. Paving materials such as brick or flagstone over sand will produce less disruption than poured concrete to the roots of a nearby tree. There are several techniques for repairing pavement that has.been damaged by protruding roots. For trees that are highly sensitive to root disturbance, consider creating a concrete or asphalt ':mini- ramp" to smooth the uneven surface between two sidewalk sections (Figure 11). .Local ordinances governing liability should be consulted prior to using this technique. Relocate walkways with broken concrete slabs a few feet farther from the tree. For trees that can tolerate root disturbance, a vertical underground barrier may redirect root expansion away from pavement (Figure 12). . All tree species are capable of causing root damage to sidewalks, foundations, or pipes. Species notori- ous for damage- causing roots are noted in Table 1. ' concrete or asphalt "mini -ramp" Figure 11. A "mini -ramp" can be used to smooth the uneven surface caused by root damage to pavement. sidewalk or curb • n•► 1 e � • o Q• e o, •o - root control barrier - o - LP ��7. • trench, backfilled with sand 3 Figure 12. A vertical underground barrier will help keep tree roots from damaging concrete as they grow. J u r 7 1 -1 I u ymptoms of Construction Damage l ' Conspicuous symptoms of con - .,cruction damage may take years to pear. Tree decline from soil com- ction, for instance, may take three to en years to appear as obvious' symptoms of distress. 'Because of this flay, landowners often attribute tree ses to other causes. Carefully monitor affected plants and keep Ittess en records to help you recognize visibl = signs of tree stress. _.member, the most serious damage rains hidden in the root system. suckering Ll I.; i yr, n13. Suckering is one symptom of nstruction damage. U ilted or scorched leaves and ing branches usually are the first gns of construction damage. In uous plants these symptoms be followed by early fall coloring td premature leaf drop. Damaged )Wers will drop excessive amounts er needles. In subsequent years . may notice yellowed or dwarfed av s, sparse leaf cover, or dead W hes. ther indicators might include revering out of season, excessive Ir formation on the trunk (Figure r abnormally large amounts of ,:J. These responses are defense �tnisms for ensuring species one year's growth bud scale - . scars' �� = - one year's growth Figure 14. Annual growth is the distance between bud stole scars on twigs. The twigs of healthy trees usually grow two to six inches longer each year. survival and commonly indicate that the plant is experiencing extreme stress. In addition to observing a tree's appearance, monitor its annual growth. A slightly damaged plant will grow more slowly and be less resistant to insects, diseases, and weather - related stress. Examine the annual shoot and branch growth (Figure 14). Healthy trees generally will grow at least two to six inches at the ends of the branches each year. Photographs and records of the tree prior to construction also can help identify growth problems. ` If you purchased your home following construction, you can identify deep fills arourid'large trees by looking for buttress flares at the base of the trunk (Figure 15).. Most common shade trees in Minnesota have buttress flares, and their absence usually indicates that the tree's base' has been covered. It may be helpful to examine the condition of trees on other sites where your builder has worked. In many cases you would be wise to have a tree -care specialist look for early symptoms of tree stress. Dollars invested in consultations with profes- sionals before damage becomes obvious may be repaid in considerable savings later on. ' covered -the.base ' L • : 11 t `! `� l i Of the tree _ _ � buttress -s ... - flares 'y - _ I t Figure 7S. To determine whether the grade has been changed around trees ` on a newly built site, check for the presence of buttress flares at the base of the trunk. 10 am A Treatment of Damaged Plants When a tree is injured by con- struction activities, energy and resources normally used for growth must be redirected towards the - process of wound closure and regrowth. During this critical period plants are particularly vulnerable to additional stress, especially insects, diseases, and severe weather. You can minimize these problems by quickly treating the damage. WATER Construction activities often alter the amounts of water received by trees. Thoroughly water plants before and immediately after they receive any kind of direct damage (e.g., severed roots). Continue periodic watering (four to five times per summer) throughout the next growing season. Be careful not to overwater your trees. A one -inch depth of water applied throughout the PRZ is a good rule of thumb. A tin can or glass jar can be used to measure the amount of water applied if an overhead irrigation system is used. Concentrate most of the water on undamaged sections of the root system. Two to three inches of mulch (wood chips or bark) spread over as much of the root system as practical will help the tree retain water and stimulate root regeneration. Living ground covers over the root system will have a similar effect, and may be more aesthetic. Apply these tech- niques to any deciduous tree exhibit- ing wilted leaves or any coniferous tree dropping excessive amounts of needles from the inner branches. Drainage systems and grade changes may cause some trees to receive too much water. Species differ in the amount of water they can tolerate (Table 1). Intolerant plants will exhibit twig and branch death. Don't wait for these symptoms to appear. If you suspect your plant is Figure 16. Before you remove fill that has been added around trees, take vertical samples to determine how deep you need to go. receiving too much water, contact a tree -care specialist for an evaluation of the problem. Treatment differs by tree species and by the amount of time the water remains on or close to the surface. For some species, a retaining wall or culvert may be needed to redirect the flow of water. EXCAVATION OF BACK - FILLED TREES If you or your tree -care specialist has determined that excessive soil additions have been made around valuable trees, efforts should be made - � v to restore the original grade, at least within the PRZ. Approach this grade restoration carefully. Determine how much fill has been added by sampling depths at several different points within the PRZ (Figure 16). If the depth is great (more than 12 inches), you may remove. most of the backfill with mechanical equipment. -Once you are within 10 to 12 inches of the original grade, complete the fill excavation carefully with shovels and rakes. Make certain no soil is piled up against the tree trunk, and aerify the soil within the PRZ to complete the operation. If the tree is already exhibiting advanced symptoms of decline, however, restoration to original grade will probably be fruitless. In this case, remove the tree and plant a new one. AERATION Soil compaction around a tree's roots may cause leaf wilt, early fall coloring, top dieback, and slow growth. Reduce the effects of compac- tion by carefully drilling a series of two -inch diameter holes in the soil to a depth of 12 to 18 inches. Begin three feet from the tree trunk and continue drilling at two-foot intervals in concentric rings around the tree out to the PRZ (Figure 17). Each hole may be refilled with sand, peat moss, or 21' diameter holes Figure 77. A series of two-inch holes 12 to 18 inches deep will help alleviate root damage caused by compaction. 7 u L 1 i L ' Dead branch /B ' A oll ' branch / ► collar 'First, I cut part way j through the branch I at A; then cut it off ` ' at B. Make the final cut at C Igure 18. Prune branches at the branch collar. mulch. A tree -care specialist may 'ecommend other alternatives, includ- ng soil injections of air or pressurized water, to improve soil aeration. 1:ERTILIZER Injured trees may need additional �utrients to replace damaged root ystems. Fertilizers containing phosphorous and nitrogen can help stressed plants recover since these ttutrients promote root and plant rowth. Avoid excessive nitrogen; increased stem and foliage growth can rause stress, especially during hot, dry veather or if the tree has been stressed due to construction activities. Because f this problem, many experts recom- aend waiting two years after damage .:as occurred before fertilizing the trees. Specific guidelines for selecting Ind applying fertilizer are described t Tree Fertilization (Minnesota Extension Service publication 10- 2421). r'RUNING AND WOUND �EPAIR Careful pruning and wound .pair are important treatments for damaged trees. Prune broken or dead tiO'Ure anches cleanly at the branch collar 18). To test whether a branch Live branch branch bark ridge B .1k is dead, bend several twigs. Twigs on live branches tend to be pliable, while twigs on dead branches tend to break. Buds also can be used to evaluate branch condition. Live buds appear full and normal in color while dead ones appear shriveled or dry. Pruning is commonly recom- mended for large trees that have suffered root damage. Opinions differ over the merits of this practice. Assuming that the tree has adequate water and is not in severe decline, some experts believe that retaining maximum leaf cover is important for root regeneration and only dead limbs should be removed. Others argue that pruning selected live limbs is neces- sary to compensate for lost roots. Generally, it is best to follow the recommendation of your tree -care specialist. When properly done in modera- tion by a skilled professional, pruning may reduce wind resistance and limb failure and improve tree health and appearance. Except in extreme cases (e.g., overhead powerlines), DO NOT let anyone cut off all of the top branches to the same height ( "top- ping"). The treatment of trunk wounds depends on the extent of damage. If the bark has been completely removed around the entire trunk, the tree will not survive and should be removed. If only a patch of bark has been removed leaving a few splinters, use a sharp knife to cleanly cut off the loose bark to a place on the stem where it is - firmly attached. DO NOT make the wound any larger than necessary. You do not need to use pruning paint or dressing to cover exposed wounds or pruned limbs. Except for special cases involving disease control, these products do little more than improve appearance. OAK WILT Oak wilt is a lethal fungal disease normally spread through root grafts between adjoining oak trees. The disease also may be spread overland by picnic beetles. In*Minnesota , construction activities that injure roots, break branches, or otherwise open a wound on an oak between May 1 and July 1 provide the beetles easy access to transmit the fungus. (Some studies have found the occurrence of oak wilt to be four times more likely within 160 feet of a construction site.) Immediately cover all open wounds with any latex paint during this period. If you suspect oak wilt, contact your city forester or private tree -care specialist. If you have oaks on your site, obtain a copy of Oak Wilt in Minnesota (Minnesota Extension Service publication. MI -3174) for additional information on identifying the disease and protecting your trees. OTHER INSECT AND DISEASE PROBLEMS Insects are attracted by distinctive chemicals that are released by plants recovering from injuries. Examples of insect pests that can sense a tree under stress include the pine bark beetle, bronze birch borer, two -lined chestnut borer, picnic beetle (transports oak wilt fungus) and some scale insects. These insects can kill a plant by their feeding or boring or by transmitting disease. Likewise, some diseases multiply 12 °o° Crown dieback. Broken limbs, dead . ' Figure 19. Trees with extensive dieback, " 1j1 �%i isY' ► trenches, thin crowns. disease, or damage may pose a threat to property and people. A tree -care specialist should evaluate and if necessary remove such trees. )i' �A 1 f Cankers. Lightning strike. - Exit boles. Evidence of internal insect damage. Deep trunk cracks. Botal covltles. ti Damaged or broken roots. _ S Pollards. Stub suckers , 4 from poor pruning practices ( topping Weak fork. V- shaped crotch ' with decay. ,/,�%j Broken - branch cavity. ' =wound cavities. Torn or missing bark. ' Conks or fungl. -V.;. -� � ton, =:., • �• ..- ...... -- �.t ` .• .;. �,�- _ :ka `' SollheavIng. =l Sawdust. Evidence of _ internal insect damage. Likewise, some diseases multiply in plants experiencing stress. Verticil- lium wilt, ash yellows, and Armillaria mellea are examples of diseases that attack weakened trees. Continually monitor the health of your trees, especially those near construction activities, for insect and disease problems. Proper treatment, including corrective pruning, water- ing, and pesticide or fungicide appli- cations, can restore tree health. Contact your county extension agent or local forester for additional infor- mation on specific tree pests. TREE REMOVAL Even the best protection plans cannot guarantee plant survival. Death may occur shortly after con- struction or years later. Look for trees with very few leaves and many dead branches. If the tree does not leaf out the following year it is dead. Large trees that lean or exhibit rot, deep trunk cracks, or extensive top dieback are potentially hazardous (Figure 19). They should be evaluated by a tree -care specialist or be removed. Dead trees are excellent for wildlife, but dangerous to people and build- ings. Large trees should be carefully removed by professionals so as not to damage the remaining plants. Tree loss can have a dramatic impact on site appearance. Prompt replacement will minimize your grief Remember, the tree you plant is your own. iu Conclusion , ', �\ It's not always easy to save trees during construction, but your efforts are worth the trouble. Healthy, well- placed trees can increase prop- erty values by 9 to 27 percent. Protect- ing tree health on a construction site is a matter of recognizing the potential impacts. Advance planning and simple steps to minimize damage often can prevent future problems. Many trees have a tremendous capacity to survive disturbance, but in an urban setting we continually test them. Take the time to protect and monitor the health of your investment. Your home and our communities will be healthier, more attractive places to live. 3. References Baughman, M. J., D. W. French, C. G. Hard, K Holman, and M. E. Zins. 1990. Landscape Tree Valua- tion (FO- 0726). University of - Minnesota, Minnesota Extension Service, St. Paul, MN 55108. `6 p. Fazio, J. R., ed. 1988. Resolving Tree - Sidewalk Conflicts (No. 3). Tree City USA, National Arbor Day Foundation, 100 Arbor Avenue, Nebraska City, NE 68410. 8 p. Fazio, J. R., ed. 1989. How to Save Trees During Construction (No. 7). Tree City USA, National Arbor Day Foundation, 100 Arbor Avenue, Nebraska City, NE 68410. 8 p. French, D. W. 1989. Oak Wilt in Minnesota (MI- 3174). University of Minnesota, Minnesota Exten- tsion Service, St. Paul, MN 55108. 6 p. 1 5. i 1. i I Harris, R. W. 1992. Arboriculture: Integrated Management of Landscape Trees, Shrubs, and Vines. Prentice -Hall, Inc. Englewood Cliffs, NJ 07632. 674 p. Hightshoe, G. L. 1988. Native Trees, Shrubs, and Vines for Urban and Rural America. Van Nostrand Reinhold, New York, NY 10003. 819 P. Matheny, N. P., and J. R. Clark. 1991. Evaluation of Hazard Trees in Urban Areas. International Society of Arboriculture, Urbana, IL 61801. 72 p. 8. Minnesota Association of$oil and Water Conservation Districts Forestry Committee. 1986. Minnesota Tree Handbook. Adven- ture Publication, Staples, MN 56479. 408 p. 9. Perry, T. O. 1982. "The ecology of tree roots and the practical signifi- cance thereof," Journal of Arboriculture 8(8):197 -211. 10. Swanson, B. T. and C. Rosen. 1990. Tree Fertilization (FO- 2421). University of Minnesota, Minne- sota Extension Service, St. Paul, MN 55108. 4 p. 11. Maryland Department of Natural Resources. October 30,1990. Natural Design in Development... Development Potential Through. Forest Conservation. Maryland Department of Natural Resources, Annapolis, MD. 12. Cervelli, Janice A. 1984. "Con- tainer tree plantings in the city," Journal of Arboriculture 10(3):83 -86 13. Moll, Gary A. ed. 1990. "Commu- nity forests get a check up," Urban Forest Forum 9(6):10 -12. 14. Miller, F.D. and D. Neely. "The Effect of Trenching on Growth and Plant Health of Selected Species of Shade Trees," Journal of Arboriculture 19(4):226 -229. Copyright ®1995 by Minnesota Extension Service, University of Minnesota. Copyright is claimed for all material in this publication except the table on page 3. The information in this publication is for educational purposes only. Reference to commercial products or trade names is made with the understanding that no discrimination is intended and no endorsement by the Minnesota Extension Service is implied. ° Al, Contributors AUTHORS Nancy L: Miller, Research Assistant, Department of Forest Resources. David M. Rathke, Teaching Specialist- Forest Resources, Department of Forest Resources. - Gary R. Johnson, Extension Educator and Associate Professor, Urban and Commu- nity Forestry. . TECHNICAL ADVISORS Melvin 1. Baughman, Extension Special- ist- Forest Resources and Associate Professor, University of Minnesota, Department of Forest Resources. David W. French, Professor Emeritus, University of Minnesota, Department of Plant Pathology. Jonathan Stiegler, Urban Forestry Coordi- nator, Minnesota Department of Natural Resources. Paul G. Walvatne, Senior Forestry Staff Specialist, Minnesota Department of Transportation, Environmental Services. The authors also wish to acknowledge Scotty Scholten, Michael Zins, Charlie Blinn and Carl Vogt of the University of Minnesota for reviewing the manuscript and providing valuable insights. PRODUCTION Produced by the Educational Development System, Minnesota Extension Service. Product Manager: Gail M. Tischler Editor: Mary Hoff Design & Illustration: Jim Kiehne The University, including the Minnesota Extension Service, is committed to the policy that all persons shall have equal access to its programs, facilities, and employment without regard to race, color, creed, religion, national origin, sex, age, marital status, disability, public assistance status, veteran status, or sexual orientation. MINNESOTA EXTENSION SERVICE U Sf�a` fl UNrvERsrrYOFMlNMOrA COLLEGE OF NATuxAL ResouRces ' This publication was produced with the support of the USDA Forest Service, Northeastern Area, State and Private Forestry; the Minnesota Department of Natural Resources, Division of ' Forestry, Urban and Community Forestry Program; the Minnesota Shade Tree Advisory Committee; and the Minnesota Extension Service. , Printed on recycled paper. ,mow ow Common Buckthorn Information 1.� PROBLEM SPECIES FACT SHEET #1 ' European (Common) Buckthorn Rhamri'zis cathartic , Description: Shrub or small tree reaching height of 25'(7.6m); trunk diameter up to 10" (25cm); crown spreading and irregular; bark gray to brown, rough textured when mature and often confused with Prunus sp. Inner bark yellow. Twigs often tipped with a spine. Small black fruits up to 1/4" (0.6cm) diameter containing 3 -4 seeds. Leaves broadly elliptic, rounded to pointed at the tip, and toothed. Upper and lower leaf surfaces smooth. Upper leaf surface dark glossy green. Leaves stay green late into fall, after all other leaves have fallen. Concern: K. cathartica was introduced to North America as ail ornamental shrub. It is native to Eurasia. The fruit causes a severe laxative effect, quickly distributing the seeds through birds. Common buckthorn invades mainly woodlands and savannas, although it may also be found in prairies and open fields. Once established buckthorn crowds or shades out native shrubs and herbs, often completely obliterating them. European buckthorn control is also of uiterest to small grain producers; the shrub is an alternate host of the crown rust of oats. MN Interagency Exotic Species Task Force 1991 firture threat ranking of SEVERE, current threat SEVERE. Controls: European Buckthom. Khunrmer cuthurticu leaves and mature berries Late March to Early May: Prescribed fire is one method proposed for controlling buckthorn in natural areas. In the upper Midwest conduct burns as soon as leaf litter is dry; resprouts will be less vigorous due to low carbohydrate levels. Burning every year or every other year in established stands may be required for 5 -6 years or more. Unfortunately buckthorn seedings often grow in low litter areas, unsuitable for prescribed fire more often than once every 3 -4 years. In dense stands seedlings and saplings may be cut and dropped on site, creating fuel for future fires. Buckthorn seedlings appear to be very vulnerable to fire, perhaps due to their poorly established root structure. Fire will top kill a mature plant, but resprouting does occur. Uprooting of smaller seedlings with a weed wrench is another non - chemical control. May to October: McHenry County, I1. Conservation District (MCICD) reports excellent results using 2040 Garlon 3A (Trichlopyr) in water with dye on cut stumps during the growing season. Product label suggests avoiding the spring sap flow. Garlon 3A undiluted applied to cut stamps between first budding in play, thronJ1 summer, to hard freeze in fall was 954 o effective in preventing resprouting (Boudreau and Willson). Hennepin Co. MN parks report l:1 Garlon 3A:water with antifreeze solution controls buckthorn during winter application. Mid- August to October: MN DNR Region V State Parks Resource Management has been using a fall cut with inunediate stump application of a 5:1 water:Roundup (Glyphosate) solution tiring a ]land sprayer. Initial checks indicate a >S50/' control overall. Kline, 19$3 in Wisconsin, used a 5:1 water: Roundup solution on cut stumps in August/September with 100°' control. Winter: 20% Garlon 4 with an oil, such as Penevator, and dye on cut sttnnps was reported as effective by t%l('ICD and very effective by Region V State Parks staff. Frill application is also effective. Experiments at the University of Wisconsin Arbore- tum report good results using a 12.5% solution on cut stumps, or a 64.0 solution basal bark treatment to stenns <3 inches dbli. This information is not an endorsernett ofpartiarlar products or pra ties. 1',-ti ide tee must ILllim label dire ti+wts :utd :mpli,cab:e ,tuts :ntd I:•da al la\\,. Sources on We with MN DNR Region V State Parks Resource Martag,,- 'Ilis do w:wu tnu\ be nlu +du xd :n needed Ems TNC Elcwuu Stewardship Ab�xraex for R. cathartica and R. fr�:i \9 I)b R Red o v V State I %As _ Illinois Nature Preserves Commission vegetation Mnnagernelt Guideline +,: I:x++eir I;uAth+-ills Et,.o�uve tipc,iali.l t tt7r'_�ii- jttj7. A Fiud<thom RcasGUCh and Control at Pipe National Monuruent. D. Boudreau & G. willu1t e-utail l adt\.b+dut ir\hn 'fate uai u, Check out the Extxic species control web site: http:l/wuw.agd nps.g + + \- ht: +t:tavl i :lttemati\c t+nitl:tt, a\ allabte `J- , �,��NP „� ri n 1 OPEN SPACE � COMMITTEE 1 1 1 1 1 1 1 1 1 1 New Open Space Committee Formed As a result of City Council and community concern for the preservation of woodlands and other open space resources, the City Council has formed an Ad hoc Open Space Committee. Committee members are Laurie Maher, Corey Mohen, John Baer and Lea Peterson. In the past, ' the City has worked with community members to inventory and evaluate open space areas. Also, a survey was carried out showing Stillwater area (City and Township) residents were interested in financially supporting through higher taxes, $18 per yearjhe City purchase open space areas f to preserve the resource. �f ' At the Council meeting of March 17, 1998, the Open Space Committee was officially established with the following charge: 1 1. Loniz Lake Woods. Strictly enforce wetland setback requirements for Echo Green area (50 foot setbacks for roads or building). ' A. Obtain additional information on availability and cost of Gadient Property. B. Develop open space trail system connecting Washington Parkway (Manning Avenue) to Gadient woods through Libert / egends project to Long Lake and City Woodland Park. C. Review development alternatives to minimize development impacts on woods 2. Review tree protection ordinance to make sure it provides maximum legal protection of significant trees 1 3. Review existing and develop updated city -wide open space site list. 4. Obtain information on open space funding program LCMR, Green Corridors, Natural Scenic I Grant Program, ICETEA and others to assist with funding of open space program. Brown's Creek Watershed District. ' 5. Meet with Land Trust and other open space organizations to see what services are available. ' 6. Review development incentives to preserve open space. The Open Space Committee is an active working committee established to promote open space protection. If you are interested in working with the Committee or being on the Committee, call ' a committee member or Steve Russell at 430 -8820. 1 Memorandum 1 To: Steve Russell, Community Development Directors From: Klayton Eckles, City Engineer Date: 01/02/98 1 Re: Comments on Alternative Design Standards for Liberty and Legends Developments 1 DISCUSSION: 1 In reviewing the Liberty and Legends Development Proposals, a number of questions arose regarding the street right -of -way area design. These questions concern street width, boulevard width, utility easement area, design standards for malls or greens and building 1 setbacks. To assist me in completing my review, I did a comparison of various street widths and layouts in the City of Rochester, New York. Rochester provides an excellent test case because the city has varying street widths, many of them narrow, a variety of boulevard ' widths and housing mix and style which seems somewhat comparable with the Old Stillwater Town as well as the neotraditional designs proposed by developers. 1 Street Widths The developers are proposing widths between 19.5 and 27.0 feet, face to face ' (definition: the true driving width). Photo 1: Shows a 24 -foot wide street. This is the typical street width in Rochester 1 and streets are typically marked with no parking on one side. The 24 -foot width street works in Rochester with traffic volumes reaching up to 2,000 cars a day, but all, streets are 1 posted with every other day parking on one side. Photo 2: Shows a two-year-old street in a new neighborhood that is 23 feet wide. Y � 1 Note that there are no restrictions on parking in this neighborhood. Photo 3 & 13: Show a 20 foot wide and 18 -foot wide street respectively.. The 20 -foot wide street is a two -way street with no parking on one side. It has very low traffic volumes. 1 The 18 -foot wide street is a one -way street with parking on one side. Because traffic volumes on both streets are very low, these streets can function with parking on one side. Based on a review of the streets mentioned above and on streets in the Stillwater area, I 1 have reached the conclusion that the street widths proposed by the developers could meet the needs of the City and the development. The negatives associated with these narrow 1 streets include possibility of no parking signs throughout the neighborhood which can be I January 2, 1998 pervasive and be a maintenance problem, as well as crowding of city utilities in the street area. Boulevard Widths In addition to narrower streets, the developers are proposing narrower right -of -ways. The City standard is a 60 -foot right -of -way. In the case of these developments, right -of- ways are shown as low as 41 feet wide. Stillwater and Rochester provide many examples of boulevard widths between two and 28 feet wide. Photos 4 & 5: Five -foot boulevards. Photos 3, 6, 7: Boulevard widths of 6 to 6.5 feet. Photo 8: Ten -foot boulevard. Photo 9: 14 foot boulevard. Photo 10: 19 foot boulevard. Photo 11: 28 foot boulevard. Even up to a 10 foot boulevard these photos show that trees planted in this area can cause significant disruption to the street and sidewalk. From the standpoint of aesthetics, the boulevards in the 14 -28 foot range are desirable. From a utility standpoint, the larger boulevards provide additional space for future utilities, additional workspace for City utility maintenance, and additional snow storage. Based on my review of this issue, I find that the five -foot boulevards proposed by the developer are inadequate. Not only are they too narrow to support large boulevard trees, they also provide inadequate room for snow storage and maintenance of utilities. Therefore, I recommend that we strive to obtain a minimum of a 10 -foot boulevard. Building Setbacks The City standard for single family dwellings is a 30 -foot setback from the front property line. The proposed development shows setbacks of only 15 feet on many of the lots. One concem with public works on building setbacks is allowing adequate space for parking. Given the narrow streets some parking will be needed on the lots. Therefore, the distance from the garage to the sidewalk should be a minimum of 30 feet that would allow two cars to be stacked in the driveway without interfering with the sidewalk. Rochester was interesting in that the typical setback was 19 feet from the sidewalk. Almost all the homes pictured in the attached photos have a 19 -foot setback. Note also that almost all of these homes have garages in the rear with single lane driveways along the side of the house. The proposed 15 -foot setbacks could create one difficulty with a five -foot easement for utilities and a five -foot front step, the area remaining for landscaping and front yard slope is only five feet. One option would be to eliminate the utilities from the easement area, greatly increase the size of the boulevard, and place the utilities in the boulevard. Photo 10 shows such a layout with a 19 -foot boulevard and a 19 -foot setback. Utilities could be placed very close to the sidewalk or very close to the curb. I I n J J l I� n n If ' January 2, 1998 Malls and Greens Photos 13 -16 show various malls in the Rochester area. Photo 13 is the largest mall, ' two city blocks long and 48 feet wide. There is an 18 -foot street on both sides and low traffic volumes. This mall is large enough to allow public use and act much like a park. ' Photo 14 shows a 42 -foot by 84 -foot mall or traffic circle. This mall is large enough to accommodate many landscaping features, but not quite large enough to provide much other public use. Photo 15 and 16 show two triangular malls approximately 100 -200 feet long ' and 60 -100 feet wide. The smaller one provides a small public space and a garden, the larger one provides a large green space and some usable public area. Photo 14 is really a good example of what we may consider a minimum mall. This 3,500 square foot mall is the ' minimum useful green space. Anything smaller tends to be an area of garbage and animal waste collection. ' Photos 17 -20 are presented as possible garage layouts. It is interesting to note that Rochester, which has only slightly more friendly weather than Minnesota, had much less emphasis on garages. Ninety percent of the homes had detached garages in the back yard ' with a single 8 -10 foot wide driveway leading from front to back. Most garages were not used for vehicles and were generally under maintained. Photo 21 shows a corner detail with sidewalk crossings setback from the curb radii. Perhaps the conclusion I have reached on this subject is that narrower streets can ' work in certain situations. However, narrower right -of -ways are not necessarily the way to go. As a general rule, as the boulevard area increased, and the traveled street surface decreased, the street became more pedestrian friendly. I conclude that the "friendliest" ' streets and streets best suited for public utilities are approximately 24 feet wide, have a 15- 20 foot boulevard, a five foot sidewalk, and a setback approaching 20 feet. P r Malls and Greens January Z 9998 Photos 13 -16 show various malls in the Rochester area. Photo 13 is the largest mall, ' two city blocks long and 48 feet wide. There is an 18 -foot street on both sides and low traffic volumes. This mall is large enough to allow public use and act much like a park. ' Photo 14 shows a 42 -foot by 84 -foot mall or traffic circle. This mall is large enough to accommodate many landscaping features, but not quite large enough to provide much other public use. Photo 15 and 16 show two triangular malls approximately 100 -200 feet long ' and 60 -100 feet wide. The smaller one provides a small public space and a garden, the larger one provides a large green space and some usable public area. Photo 14 is really a good example of what we may consider a minimum mall. This 3,500 square foot mall is the ' minimum useful green space. Anything smaller tends to be an area of garbage and animal waste collection. Photos 17 -20 are presented as possible garage layouts. It is interesting to note that Rochester, which has only slightly more friendly weather than Minnesota, had much less emphasis on garages. Ninety percent of the homes had detached garages in the back yard ' with a single 8 -10 foot wide driveway leading from front to back. Most garages were not used for vehicles and were generally under maintained. ' Photo 21 shows a corner detail with sidewalk crossings setback from the curb radii. Perhaps the conclusion I have reached on this subject is that narrower streets can ' work in certain situations. However, narrower right -of -ways are not necessarily the way to go. As a general rule, as the boulevard area increased, and the traveled street surface decreased, the street became more pedestrian friendly. I conclude that the "friendliest" ' streets and streets best suited for public utilities are approximately 24 feet wide, have a 15- 20 foot boulevard, a five foot sidewalk, and a setback approaching 20 feet. . 01 AAA ..f' I i LT y S y�rM, JCS 11 i •. ^-sr1� Yiri �4�/ � Y - ''�i,y- �•, -.°- -.tea.. � � �,_ ;. -- ..�. -z - _.. r �+ t A ' LI :44 IVA -AW- 7t� A". PSI;, wr If 'A �j7 I ww�7- 3,9 77 Y 44 W, 4 711. All AMON., All (771] If IC- Ir A tit V ONI BALSAMs, Amw -W 44" X" OX Vt' 41Q, tr 7E� An 5 vo 44' Mki I 'I ft vas Awl _t,,t 7 QU. : .i 1, � - !:, ." ilk. 1 7,- t." � r4 COIN VI �*A it M a Jig 40 la- MIT- -re _4jAmm U-7 A ja V cl h to k'P lei it��.I.�'ii�,S� -� 1{ t �. 1'g1�YU`'uv r2' rtZ w �Ca;I� j�1I- •i'`�; �, � R• r ��y i-i.N�}e• � ' _ .�� • t t�� /flee. 4 a t S _- ..ice --�✓ Lm � � ��T � , � 1��`•ey 'N /rest? � ��a' if''� �A a� � �� � � � � X71' ' 'Y� j� • 'Q �'d 9 � � � �' 161M 0 At �R�wy„�r t ;6 wit,°, 4 011 r AR �h �tY � ~�'6"�'• ji�� �r�``.- �6r1Vg a�.� � {�� t .P' fi'�r.i t �r �; ` � � �� � - �: - wi.- w.t::%.tvFS...Nr�,� ^..��� ✓ _ ,'rte � i ° 5v +. � tk f vi _ r ."Wilk IV, J. Will. bigY IBM In 6 do It mw.za af 'er er. I Ilt lilt -p ?tk s ?c Pvfi r F 2 R wed. *.r....A . r � J. `i'. .•i�K`�`n•F �, t `Cj Ti= C�7a�k♦-+�' - � +r A ✓ a.� IRS= — ov Westwood Professional Services, Inc. 'October 31, 1997 Mr. Steve Russell City of Stillwater 216 North Fourth Street Stillwater, Mn 55082 Re: Street Widths - Pemtom - Legends of Stillwater Dear Steve: 7599 Anagram Drive Eden Prairie, MN 55344 Phone: 612-937-5150 Fax: 612. 937.5822 Toll Free: 1. 888- 937 -5150 Email: wps @wesrvoodps.com Ref: 96250 Over the last several months, we have been looking at ways to reduce the street widths from typical Stillwater standards to accomplish a variety of goals within the Legends of Stillwater Development. These goals, also being encouraged by the A.U.A.R. document to help reduce negative effects on the environment, also will help benefit the City in many ways. The following is a partial list of advantages that smaller street widths provide: • Reduces the average temperature of rainwater runoff that eventually routes to Brown's Creek or the St. Croix River • Reduces the runoff rate and runoff volume of stormwater by reducing the amount of hard surface within a project • Encourages slower traffic. Neighborhoods with narrower, curvilinear streets experience slower average speeds than wider, straight streets according to the Institute of Transportation Engineers. Slower traffic leads to safer streets for the pedestrian • Reduces the amount of snow to be removed from streets, thus reduces the Public Works work effort • Reduces the amount of pavement to be maintained and or replaced during it's lifecycle • Reduces maintenance costs • Reduces replacement costs • Provides for a more pedestrian friendly environment that allows more green space/landscaping adjacent to the homes • Reduces the initial cost of the street by reducing the raw materials required The streets we are proposing are represented in a document provided by the Institute of Transportation Engineers (ITE). Within that document, they establish a series of 16 goals that should be considered when laying out a residential street system. They are as follows: 1. Adequate vehicular and pedestrian access should be provided to all parcels 2. Local street systems should be designed to minimize through traffic movements 3. Street patterns should minimize excessive vehicular travel 4. Local street systems should be logical and comprehensible... 5. Local circulation systems and land development patterns should not detract from the efficiency of bordering major streets 6. elements in the local circulation system should not have to rely on extensive traffic regulations in order to function efficiently and safely. Designing the Future Today ... since 1972 n I� C 0 C u C 0 i 1 i 11 n 0 n 7. Traffic generators within residential areas should be considered in the local circulation pattern 8. Planning and construction of residential streets should clearing indicate their local function 9. The street system should be designed for a relatively uniform low volume of traffic 10. Local streets should be designed to discourage excessive speeds 11. Pedestrian- vehicular conflict should be minimized 12. A minimum amount of space should be devoted to street use 13. There should be a limited number of intersections 14. The arrangement of local streets should permit economical and practical patterns, shapes and size of development parcels 15. Local streets should be related to topography from the standpoint of both economics amenities 16. Appropriate provisions for transit service within residential areas should be established The Legends of Stillwater contains a local street system with Average Daily Traffic (ADT) volumes ranging from 50 to 680 two way trips per roadway. Our street classification system includes Limited Access Streets, Access Streets and Subcollector streets. These streets have ranges of ADT from 0 -60, 0- 250 and 250 -1000 two way trips per day respectively. Although ADT analysis is not the best or only design criteria for residential street design, it gives us a basis for determining use needs of a particular roadway. The following chart represents our proposed street design: Street Type ADT Range Roadway Width Parking Limited Access Drives 0 -60 20.5 (B -B) One side Access Streets 0 -250 24 feet (B -B) Both sides Subcollector streets 250 -1000 28 feet (B -B) One side Access Streets and Subcollector streets are proposed in 50 foot right -of -ways that allow for sidewalks, utility corridors, pedestrian/public movement and landscaping. All houses will have a minimum of a two car garage that will allow for the majority of the cars to park off of the street. On -street parking should be considered an occasional event. The issue of reduced street widths is important to this development to capture the character and overall feel of a quality neighborhood. Please contact me if you have any questions. Sincerely, WE O FESSIONAL SERVICES, INC. ' Dwight K. Jelle, P.E. Principal 1 Copy: Dan Herbst, Pemtom Land Co. Legends of Stillwater (PUD/97 -67 and SUB/97 -68) The following conditions of approval were adopted as a part of the Legends of Stillwater concept PUD and preliminary plat approval. 1. The Oak Woodland being dedicated to the City, as a park shall be reviewed by a forester and management recommendations implemented before dedication to the City. 2. The Outlot D park site shall be graded and seeded as part of the subdivision improvement. 3. All trails shall be 8 feet bituminous pathways installed as part of Phase.I subdivision improvements. 4. A pathway shall be added connecting Baron's Circle cul de sac and Legends Boulevard to the shoreland trail (as originally proposed). 5. Street trees and site landscaping as shown on Map 4 of 8 shall be installed as phased subdivision or improvements are made. 6. McDougal Green shall be expanded to include portions of Lots 11 & 12 to the north. 7. Street crossings along Legends Boulevard shall be paved in concrete. 8. Boulevard areas and front yards shall be sodded. 9. Improvements shall be made to 62nd Street as required by the City Engineer (parking lot, pathway, surfacing). 10. Additional right of way or street easement may be required to accommodate 10 feet boulevard. 11. The lakeshore setback area shall be protected with an open spacelconservation easement prohibiting land and vegetation disturbances and prohibiting any construction other than approved pathways, docks and enhancement landscaping. 12. In the private open space area, tree removal shall be restricted. 13. The draft Forest Management Plan shall be reviewed by a forester as it relates to the Legends property and management activities and responsibilities determined for the developer, homeowner and city. 1 26. The City and Developer shall implement the AUAR Mitigation Plan regarding storm water runoff and natural area protection. 27. The Stapples place cul de sac area shall be restudied before final Phase III PUD ' approval to see if a redesign can reduce the tree removal, grading and land alterations. ' 14. Education information shall be provided to all lakeshore homeowners to provide approved lawn care method. ' 15. The pathway easement shall be legally described bed and mar ked along the shoreline. ue. 16. DNR approval shall be obtained for the PUD before final City PUD and plat ' approval. 17. A list of trees native to the area shall be provided to developers and owners of ' individual lots for use in landscape plans. 18. The Homeowner's Association shall be responsible for maintenance of Greens cul ' de sacs, landscaped areas and development theme areas. 19. Areas around wetlands and drainage ponds shall be planted with native plants suited to the environment. 20. All lakeshore lots and Staples Place lots shall require administrative design review to ensure proper grading, drainage and erosion control, minimize tree removal and protect existing trees before building permits are issued for house construction. ' 21. Approved fencing detail shall be included in final PUD review and approval. ' 22. The City Attorney and City Engineer shall review and approve the declarations, covenants, conditions, restrictions and easements before final PUD approval. , 23. The City Attorney and Communi ty Development ment Director shall review the dock easements and covenant agreements before final PUD approval. 24. The Development Architectural Control Committee shall approve final PUD plans for consistency with architectural standards ( "the ACC shall encourage the use of traditional elements of design including but not limited to porches, side entry and ' recessed garages and traditional windows and gables ") before submission to the City Planning Commission for review. ' 25. The City's Design Guidelines for Phase I expansion area development shall be used by the DACC, City staff and Planning Commission in reviewing final Planned Unit Development Plans. , 26. The City and Developer shall implement the AUAR Mitigation Plan regarding storm water runoff and natural area protection. 27. The Stapples place cul de sac area shall be restudied before final Phase III PUD ' approval to see if a redesign can reduce the tree removal, grading and land alterations. 28. The subdivision public improvement plans (road, sidewalk, tree planting and utilities) shall be reviewed be a forester to minimize impact to trees. 29. Comments from the City Engineer contained in his memo of 1 -23 -98 shall be addressed before final Phase I preliminary plat approval (attached). 30. Street and access issues raised in Glen Van Wormer's letter of 1 -27 -98 shall be addressed before final plat approval (attached). 31. Before Phase II PUD and subdivision approval, Phase I project design shall be reviewed to see if the desired effect is achieved by the design guidelines and zoning regulations or if changes are needed. KI RESOLUTION NO. 98-38A CITY COUNCIL STILLWATER CITY HALL CITY OF STILLWATER WASHINGTON COUNTY In Re: The Liberty of Stillwater 1) PRELIMINARY PLAT APPROVAL SUB 97 -71 2) PRELIMINARY PLANNED UNIT DEVELOPMENT APPROVAL SUB /97 -70 WHEREAS, the City Council, finds that the application on file for the request is complete and that all submitted requirements have been met; that due and proper public notice has been mailed and published and that the procedural and substantial requirements of law have been met. After due and careful consideration of the application, after considering the comments of the public, both written and that represented at the public hearings, the City Council hereby resolves as follows: 1. That preliminary plat approval and preliminary planned unit development approval are hereby given, subject to the following conditions of approval: 1. A Forest Management Plan for the Liberty Woodlands must be prepared with City review and approval by a qualified forester. The plan shall describe measures that can be taken by the developer and new homeowner to protect the woodland. 2. All trails must be 8 feet bituminous pathways and installed as part of Phase I subdivision improvements. 3. Street trees and site landscaping must be installed as phased subdivision occurs or as public improvements are made. 4. Street crossings along Liberty Parkway, Liberty Avenue, Rutherford Road, Pioneer Place and Settlers Way must be paved with concrete or marked in some other way acceptable to the City. 5. Boulevard areas and front yards must be sodded 1 6. The final design of the traffic circle and County Road 12 right of way must be approved by the City and Washington County before final PUD and plat approval. 7. DNR must approve the open space plan and dock locations plan before final City PUD and plat approval. 8. Added right of way or street easements must be provided as required by the City Engineer. 9. The lakeshore setback area must be protected with an open space /conservation easement prohibiting land and vegetation disturbances and prohibiting construction other than the public pathway, docks and enhanced landscaping. 10. Educational information must be provided to all lakeshore homeowners to provide approved lawn care methods. 11. The pathway easements must be legally described and marked along the shoreline. 12. A list of acceptable trees native to the area must be provided to developers and owners of individual lots for use in their landscape plans. 13. The Homeowner's Association must be responsible for maintenance of greens, cul de sacs and landscaped development theme areas. 14. Areas around wetlands and drainage ponds must be plated with native plants suited to the environment. 15. All lakeshore and Echo Green lots must require Administrative Design Review before being built upon. 16. Approved fencing detail must be included in final PUD review and approval. 17. The City Attorney and City Engineer must review and approve the declarations, covenants, conditions, restrictions and easements before final PUD approval. 18. The City Attorney and Community Development Director must review the dock easements and covenant agreements before final PUD approval. 19. The Development Architectural Control Committee must approve final PUD plans for consistency with architectural standards contained in the PUD application before city review. 2 ' 30. Private open space restrictions prohibit tree cutting except as permitted in the approved Forest Management Plan.. ' 31. Wider tree preservation easements shall be provided along the back of the lakeshore lots from the current 90 -foot width to a maximum 170 feet through deed restrictions. u ' 20. The City's Design Guidelines for Phase I expansion area development must be used by the City staff and Planning Commission in reviewing final Planned Unit Development ' Plans. 21. The City and Developer must implement the AUAR Mitigation Plan regarding storm ' water runoff and natural area protection (protection of oak forest from oak wilt). ' 22. All lot building envelopes except for four as shown on the concept PUD plans must meet slope setback requirements. ' 23. The Echo Greens development area must be restudied before final Phase III PUD approval to see if a residence can reduce tree removal, minimize wetland impacts and reduce grading and land alterations. ' 24. Final landscape plans must be submitted as a part of final PUD approval showing private landscaping in additional to street trees. 26. The subdivision improvement plans road, sidewalk and utilities must be reviewed by a forester to minimize impacts to trees. ' 26. Comments from the City Engineer in his memo of 1 -23- 8 ty g 9 must be addressed before ' Phase I preliminary plat approval. 27. Street and access issues raised in Glen Van Wormees letter of 1 -27 -98 must be addressed ' before final plat approval. 28. Before Phase II PUD and subdivision approval, the Phase I project design must be ' reviewed to see if the design guidelines desired effect is achieved or design guidelines or zoning modifications are needed. ' 29. Subdivision improvements must be reviewed by a forester to minimize the impact to trees. ' 30. Private open space restrictions prohibit tree cutting except as permitted in the approved Forest Management Plan.. ' 31. Wider tree preservation easements shall be provided along the back of the lakeshore lots from the current 90 -foot width to a maximum 170 feet through deed restrictions. u 32. The applicant must evaluate possible soil erosion impacts and development visibility from public waters before applying for a permit for construction of sewage treatment systems, roads, driveways, structures or other improvements on steep slopes. When determined necessary, conditions must be attached to issued permits to prevent erosion and to preserve existing vegetation screening of structures, vehicles and other facilities as viewed from the surface of public waters, assuming summer, leaf -on vegetation. Enacted by the City Council of the City of Stillwater this 3-A 0 day of 1998. CITY OF STILLWATER J y le ' ayor ATTEST: Morli Weldon, Clerk 4 AJZ"'A_IAcC- / O. me -v 1-,%z,, -A IEll 111..MEN n111uf11n111u� _ mIn m11111111111111 1111111 Im1 � �I�BI mn11��nm�n®Inn1 m11n�AIn�nI111m11�'IIIn Im1111111111111mm�in®In m1111111i1mn11a111i1II1�l1 ImIm111mn1111In�n nunnlm�l�u1��� t ._ �n1,IrIn1111111m11��9n mIn11111�111nI1111Imnn Innnl r�mllmin NEI mlml�il�mmnnlmm ImIn1l�mmnullum mun1111���nnn•n1� �.111111nm 111n1111E In����n1lnlnnnnmlmmm n1I lowln11n11mimn . 1�,111111111��!.IIInInIm111111 I NEImONE 1111Ii1���lIm�111n11111nIn111 I I I IInln11 11111 11 1n11n11111n111111mnm ME IMIN ME MIN ME WIN IMIN li Y � • Z� � Cc� i LZ 6 42I 5 is i�yd�Q 1��13 �1a�i 3j�iQ ME IMIN ME 1 m m m m m m m m m m m r m m m m m m m fiT� " F�,ar �Y r � A sTi�� �� C5T 105 10 95 all 85 9E 75 70 65 .e 5 5 -�-- 06/27 1997 U/ /U/ U "// 17 Nea1797 08/06 SIN 128829 T e m P e r a t u r e F 76 74 72 70 68 66 64 62 60 58 56 0 1997 Nea1797 31 SIN 128829 �e �e �e �E 70 65 .o 55 50 45 08/29 09/08 09/18 09/28 10/08 1997 Nea1797 SIN 128829 T e m P e r a t u r e F M. 55 50 45 .e 35 30 10/09 1997 10/19 10/29 Nea1797 11/08 11/18 SIN 128829 T e m P e r a t U r e F 85 -, EI7 75 70 65 60 55 5 0 - x- 06/04 1998 I 1 1 06/14 06/24 07/04 Neal avenue 1998 I 1 1 07/14 07/24 08/03 SIN 128829 T e m P e r a t u r e F 75 70 65 M 55 50 45 07/29 08/08 08/18 08/28 09/07 09/17 1998 Neal avenue 1998 09/27 10/07 SIN 128829 m �e �e �F 95 m 85 80 75 70 65 .1l �yl soRR797 06 SIN 128830 T e m P e r a t u r e F 80 75 70 65 .W 55 50 08/01 08/11 08/21 08/31 1997 soRR797 SIN 128830 �e �e �e �F 70 m .. 64 62 - 58 56 5 4 -�--- 08/29 1997 09/08 09/18 09/28 10/08 soRR797 SIN 128830 T e m P e r a t u r e FQ M 55 50 45 40 35 30 10/09 1997 10/19 10/29 11/08 11/18 soRR797 SIN 128830 T e m P e r a t U r e F m = = = ' m = = = = m = = = = = m m 80 7 75 70 M MCI 55 50 07/29 08/08 08/18 08/28 09/07 1998 south of R/R 1998 09/17 09/27 10/07 SIN 128830 m w T 80 e m P e 75 r a t U r 70 e F 65 Me 55 50 06/04 06/14 06/24 07/04 07/14 07/24 08/03 1998 south of R/R 1998 SIN 128830 ' e m �e �P all 85 75 70 65 .� 5 5 --�-- 06/20 1997 Brown's creek at M 06/28 SIN 128828 T e m P e r a t u r e F all 85 WE 75 70 M w 55 5 0 -�--- 06/27 1997 07/07 07/17 07/27 08/06 CR15797 SIN 128828 85 80 75 70 65 m 55 5 0 -t- 08/01 1997 08/11 08/21 08/31 CR15797 SIN 128828 T e m P e r a t u r e F 75 70 65 CA 55 50 4 5 --1-- 08/29 1997 09/08 09/18 09/28 10/08 CR15797 SIN 128828 i 65 Aus 55 50 45 40 35 30 1U/ Uy 1997 10/19 10/29 CR15797 11/08 11/18 SIN 128828 m [.*To] T e m 70 p e r a t 65 U r e 60 F 55 50 45 40 04/14 04/24 05/04 05/14 05/24 06/03 06/13 1998 Neal avenue 1998 SIN 128829 85 -, 1 06/13 SIN 128828 T e m P e r a t u r e F 85 80 75 70 65 60 55 50 45 06/04 06/14 1998 06/24 07/04 07/14 07/24 08/03 CoRd 15 crossing 1998 SIN 128828 T e m P e r a t u r e F 80 7 75 70 65 60 55 50 45 -t- 07/29 1998 I I I 1 - 1 08/08 08/18 08/26 09/07 09/17 09/27 10/07 CoRd 15 crossing 1998 SIN 128828 T e m P e r a t u r e F 95 do M 80 75 70 65 6 0 - 07/03 1997 07/13 07/23 08/02 08/12 longlk97 SIN 128762 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ' Remarks: At last Thursday's meeting with yourself and Dwight Jelle of Westwood, Inc., an issue that remained unresolved was the size of the storm sewer pipe downstream of Inlet 82A for the pond in Outlot B. Dwight Jelle requested that the pipe in question be a 21" diameter pipe versus the recommended 18" ' diameter pipe. He made this request so that he would not have to adjust his grading plan to account for the increase in the pond's high water level and emergency overflow elevation. After reviewing the ' hydraulic behavior of the pond under both outlet scenarios and keeping in mind the overall situation for Long Lake, my recommendation is to maintain the pipe at an 18 ", as previously recommended. The pond ' HWL will be 905.7', with a peak discharge of 19 cfs as noted in the last memo (dated 6/2/98). The emergency overflow will need to be raised to 906'. The reasons for the recommendation are as follows: 1. The AUAR gave a runoff rate control recommendation of 23 cfs for this area. There are four ponding areas on this development. The combined peak discharge of all four ponding basins (assuming the ' above recommendation) is 29 cfs. The City has shown some flexibility and allowed an increase in the peak discharge because the two main ponds have been designed with two -stage outlets. The two- stage outlets allow for further reduction in the peak flowrate out of the ponds during storm events less than the 5 -year event. The AUAR did not assume two stage pond outlets. If the pipe outlet for Outlot B were increased to a 21" diameter pipe, the combined peak discharge for the site would increase another 5.5 cfs to 34.5 cfs. This would be a 50% increase over the recommendation in the AUAR, which is quite a bit. 2. Given that the improvements for the outlet of Long Lake are being delayed, efforts to delay the rate of ' runoff into Long Lake are more important than ever. The flooding concerns for Long Lake are well documented. IBonestroo, Rosene, Anderlik and Associates, Inc. ❑ St. Paul Office: ❑ Milwaukee Office: �. 4 rr,LL(iJ --- ❑ Willmar Office: ❑ St. Cloud Office: 2335 West Highway 36 1516 West Mequon Road eonestroo I;bsene ' Mem o ' St. Paul, MN 55113 Artclerlik& Associates Rochester, MN 55901 Willmar, MN 56201 St. Cloud, MN 56303 Engineers &Architects ' Phone: 507 -282 -2100 Phone: 320-214-9557 Phone: 320-251-4553 Fax: 612 -RIFF 1311 Project Na e: The Le ends 1 9 Client: City of Stillwater C/ y Fax: 321`1- 214 -9468 ' To: Klayton Eckles File No: 51005 From: Erik Peters Date: June 15, 1998 Re: Outlet pipe size for the large pond in Outlot B (specifically, the pipe downstream of Inlet 82A). ' Remarks: At last Thursday's meeting with yourself and Dwight Jelle of Westwood, Inc., an issue that remained unresolved was the size of the storm sewer pipe downstream of Inlet 82A for the pond in Outlot B. Dwight Jelle requested that the pipe in question be a 21" diameter pipe versus the recommended 18" ' diameter pipe. He made this request so that he would not have to adjust his grading plan to account for the increase in the pond's high water level and emergency overflow elevation. After reviewing the ' hydraulic behavior of the pond under both outlet scenarios and keeping in mind the overall situation for Long Lake, my recommendation is to maintain the pipe at an 18 ", as previously recommended. The pond ' HWL will be 905.7', with a peak discharge of 19 cfs as noted in the last memo (dated 6/2/98). The emergency overflow will need to be raised to 906'. The reasons for the recommendation are as follows: 1. The AUAR gave a runoff rate control recommendation of 23 cfs for this area. There are four ponding areas on this development. The combined peak discharge of all four ponding basins (assuming the ' above recommendation) is 29 cfs. The City has shown some flexibility and allowed an increase in the peak discharge because the two main ponds have been designed with two -stage outlets. The two- stage outlets allow for further reduction in the peak flowrate out of the ponds during storm events less than the 5 -year event. The AUAR did not assume two stage pond outlets. If the pipe outlet for Outlot B were increased to a 21" diameter pipe, the combined peak discharge for the site would increase another 5.5 cfs to 34.5 cfs. This would be a 50% increase over the recommendation in the AUAR, which is quite a bit. 2. Given that the improvements for the outlet of Long Lake are being delayed, efforts to delay the rate of ' runoff into Long Lake are more important than ever. The flooding concerns for Long Lake are well documented. IBonestroo, Rosene, Anderlik and Associates, Inc. ❑ St. Paul Office: ❑ Milwaukee Office: ❑ Rochester Office: ❑ Willmar Office: ❑ St. Cloud Office: 2335 West Highway 36 1516 West Mequon Road 2222 Hwy 52 North 205 5th Street SW 2008 8th St. North ' St. Paul, MN 55113 Mequon, WI 53092 Rochester, MN 55901 Willmar, MN 56201 St. Cloud, MN 56303 Phone: 612-636-4600 Phone: 414 -241 -4466 Phone: 507 -282 -2100 Phone: 320-214-9557 Phone: 320-251-4553 Fax: 612 -RIFF 1311 Fax, 414 - 241 -44(N Fax- ACMU2 -3100 Fax: 321`1- 214 -9468 Fax: 32n- 251 -62.52 R ' Bonestroo Rosene Anderlik & Memo Associates Englrners 3 Ard+ltect: 3. Development in the annexation area has been and will continue to be scrutinized by various , government agencies and private parties. The additional increase in peak discharge, by permitting a 21" pipe, would be difficult to justify based on the AUAR recommendations. ' 4. The minimal costs to be incurred by the developer in modifying the grading plans, is the result of the ' development plans not,following the recommendations for the pond in Outlot B given in previous correspondence. 11 1 Bonestroo, Rosene, Anderlik Associates, Inc. I and ❑ St. Paul Office: ❑ Milwaukee Office: ❑ Rochester office: ❑ Willmar Office: ❑ St. Cloud Office: 2335 West Highway 36 1516 West Mequon Road 2222 Hwy 52 North 205 5th Street SW 2008 8th St. North St. Paul, MN 55113 Mequon, WI 53092 Rochester, MN 55901 Willmar, MN 56201 St. Cloud, MN 56303 ' Phone: 612-636-4600 Phone: 414-241-4466 Phone: 507-282-2100 Phone: 320-214-9557 Phone: 320-251-4553 Fax*. R12- R.V-Ai -1311 Fax* 414 - 241 -49n1 Fax: 5n7- 282 -31 On Fax*. 320- 214 -945R Fax- 320- 251 -8252 Bonestroo Memo .o. JA Rosene In Anderlik & Associates Engineers 6 Architects Project Name: Liberty Development Review Client: City of Stillwater ' To: Klayton Eckles File No: 51005 IFrom: Erik Peters Date: June 1, 1998 ' Re: Drainage review of grading plan (dated 5/7/98) and runoff calculations (dated 5/14/98) received on May 19th. ' Drainage to Long Lake: On the grading plan, the primary drainage is through a series of four ponds that capture and detain runoff before discharging into the next downstream pond and eventually Long Lake. The four ponds beginning from the furthest upstream are Pond E, Pond D, Pond B (the school pond), and Pond C. In several areas within the site, storm sewer is proposed to drain against overland flow. In other words, if the intensity of the storm event exceeds the design event for the storm sewer, then runoff will bypass the storm sewer system and flow overland, downstream, along streets to the next control point. The next control point will not be the pond into which the storm sewer drains, but another water -body or street depression. This makes the modeling of runoff more difficult for the large storm events. Rainfall intensity becomes an increasing factor in flood control. ' In an earlier drainage memo concerning Liberty Development (dated 12/30/98), we requested that the peak 100 -year flow rate into Long Lake be limited to 14 cfs. The peak flow rate from the development as currently proposed is approximately 70 cfs. However, most of the drainage area is directed to Pond B that has a peak discharge of 6 cfs. Wetland D: Wetland D is located west of Wetland E and is landlocked. The overflow elevation is approximately 949.5 If the pond basin should fill with water to the overflow elevation, the overflow ' route is to the southeast, toward the Legends Development. For lot development purposes, the design HWL is recommended to be no less than 950.5'. Wetland E: Wetland E is the largest of the wetlands along the southern edge of the property and is presently landlocked. The existing drainage area for this wetland is approximately 4.3 acres. The post ' development drainage area for the wetland is approximately 3.5 acres. No storm sewer is shown to discharge into this wetland. The grading plans indicate that a storm sewer outlet will be provided which would drain into Pond E. However, the outlet elevation was not determined. Based on the delineated ' Bonestroo, Rosene, Anderlik and Associates Pagel of 5 2335 West Highway 36 # St. Paul, MN 55113 # Phone: 612- 636 -4600 # Fax: 612- 636 -1311 _ __ Pond E: Pond E has a direct drainage area of approximately 12.6 acres. The average lot size within its drainage area is 1/5 -acre lots. Currently the pond is designed with 3.24 acre -feet of wet storage. The ' amount of wet storage required for water quality purposes (runoff from a 2.5 -inch rainfall) is 0.9 ac -ft based on an average CN of 79. The normal water level (NWL) of Pond E is 937'. The design outlet is , a 12" culvert at 1.0% slope). The 100 -year high water level (HWL) of Pond E is 939.2', assuming 2.1 acre -feet of dry storage and a peak discharge of 4.5 cfs. Pond E drains into Pond D. Pond D: Pond D has a direct drainage area (with storm sewer) of approximately 15 acres. When the intensity of the storm event exceeds the design event for the storm sewer, then a portion of the runoff ' from approximately 9.7 acres -will bypass the storm sewer and consequently Pond D. The runoff will flow down the streets of Homeward Way and Liberty Parkway and pond at the three -way intersection of Liberty Parkway and Homeward Way. An emergency overflow route is recommended at this intersection. Additional catch basins are also recommended for consideration. , The pond is designed with approximately 4 acre -feet of wet storage. The amount of wet storage required for water quality purposes is 1 acre -feet based on an average CN of 77. The NWL of Pond D ' is 927.5'. The design outlet is a 15' RC pipe at 1.0% slope. The 100 -year HWL of Pond D is 929.9', assuming 2.7 -acre feet of dry storage and a peak flow rate of 7 cfs. When estimating the 100 -year , HWL, I assumed the entire 15 acres would drain entirely to Pond D. The model used in the storm sewer computations submitted by Westwood, Inc. appears to under estimate the peak discharge , through culverts. However, the difference is not significant. ' Memo Bose e �� ' Anent "Anderlik & Associates ' Engineen & Architect: wetland boundary, the recommended outlet elevation to prevent draining of the wetland is ' approximately 944'. , Pond E: Pond E has a direct drainage area of approximately 12.6 acres. The average lot size within its drainage area is 1/5 -acre lots. Currently the pond is designed with 3.24 acre -feet of wet storage. The ' amount of wet storage required for water quality purposes (runoff from a 2.5 -inch rainfall) is 0.9 ac -ft based on an average CN of 79. The normal water level (NWL) of Pond E is 937'. The design outlet is , a 12" culvert at 1.0% slope). The 100 -year high water level (HWL) of Pond E is 939.2', assuming 2.1 acre -feet of dry storage and a peak discharge of 4.5 cfs. Pond E drains into Pond D. Pond D: Pond D has a direct drainage area (with storm sewer) of approximately 15 acres. When the intensity of the storm event exceeds the design event for the storm sewer, then a portion of the runoff ' from approximately 9.7 acres -will bypass the storm sewer and consequently Pond D. The runoff will flow down the streets of Homeward Way and Liberty Parkway and pond at the three -way intersection of Liberty Parkway and Homeward Way. An emergency overflow route is recommended at this intersection. Additional catch basins are also recommended for consideration. , The pond is designed with approximately 4 acre -feet of wet storage. The amount of wet storage required for water quality purposes is 1 acre -feet based on an average CN of 77. The NWL of Pond D ' is 927.5'. The design outlet is a 15' RC pipe at 1.0% slope. The 100 -year HWL of Pond D is 929.9', assuming 2.7 -acre feet of dry storage and a peak flow rate of 7 cfs. When estimating the 100 -year , HWL, I assumed the entire 15 acres would drain entirely to Pond D. The model used in the storm sewer computations submitted by Westwood, Inc. appears to under estimate the peak discharge , through culverts. However, the difference is not significant. bypasses the storm sewer will flow to Pond C and Long Lake. Pond B is the primary rate control pond for runoff into Long Lake.. ' The current outlet of Pond B was designed and installed as part of the design and construction of ' Rutherford Elementary School. The outlet is a three -stage outlet. The primary outlet is a 5" orifice acting as a skimmer and rate control for flow into an 18" culvert. The outlet elevation (design vs. as Bonestroo, Rosene, Anderlik and Associates Page 2 of 5 2335 West Highway 36 # St. Paul, MN 55113 # Phone: 612 - 636 -4600 # Fax: 612 - 636 -1311 ' Pond B: The predevelopment (existing) drainage area to the basin of Pond B is approximately 38 acres. The post developed direct drainage area (with storm sewer) for Pond B is approximately 72 When ' acres. the intensity of the storm event exceeds the design event for the storm sewer into Pond B, a portion of the runoff from approximately 43.7 acres will bypass the storm sewer and consequently Pond B. This does not include the additional runoff bypassing the upstream ponds.. Flow that , bypasses the storm sewer will flow to Pond C and Long Lake. Pond B is the primary rate control pond for runoff into Long Lake.. ' The current outlet of Pond B was designed and installed as part of the design and construction of ' Rutherford Elementary School. The outlet is a three -stage outlet. The primary outlet is a 5" orifice acting as a skimmer and rate control for flow into an 18" culvert. The outlet elevation (design vs. as Bonestroo, Rosene, Anderlik and Associates Page 2 of 5 2335 West Highway 36 # St. Paul, MN 55113 # Phone: 612 - 636 -4600 # Fax: 612 - 636 -1311 JA Bonestroo J 1 a Rosene Memo Anderi ik & Aswdates Engineers a Architect: ' built) is 901.03'. Last week, I observed that sediment has nearly plugged the 5" orifice (invert elevation of 899.6'). Mr. Hailing of Hailing Engineering calculated the 100 -year HWL of Pond B to be 903.85' ' based on the existing drainage area. The second and third stage outlets were designed to be used as an emergency overflow. ' The development plans for Liberty call for expanding the ponding basin, raising the HWL and installing P ' an additional outlet. The additional outlet is a 12" pipe with an invert elevation of 901.5'. The outlet will discharge to Pond C and Long Lake. The second and third stage outlets of the existing outlet structure will need to be plugged and/or raised above the adjusted 100 -year HWL. The modified pond is designed with approximately 9.3 acre -feet of wet storage. The amount of wet storage required for water quality purposes is 4.3 acre -feet based on an average CN of 77. The 100 -year HWL of Pond B is 906.8', assuming 22.2 acre -feet of dry storage and a peak flow rate of 6 cfs out the 12° outlet pipe. Assuming the 5" orifice does not become plugged, the 100 -year HWL would drop a few tenths of a foot to 906.3' with a combined peak flow rate out of both outlets of 7 cfs. The first floor elevation of the school is 908.67'. In either drainage scenario, the freeboard protection for the school is less than the 3 feet typically required in Stillwater. Efforts to lower the 100 -year HWL of Pond B and maintain the 3 feet of freeboard protection for the school are recommended. Reducing the peak flow rate from Pond D and E to 1 cfs may be all that is necessary to lower the 100 -HWL of Pond B. When estimating the 100 -year HWL, I assumed the entire drainage area (both direct and indirect) would drain entirely to Pond B. Given the several locations where runoff may bypass the storm sewer system, some flow can be expected to bypass Pond B during storm events with periods of high rainfall ' intensity. Thus, the 100 -year HWL may be conservative. Detailed information on the storm sewer system is unavailable at this time. Without this information and a more detailed drainage analysis, the amount of flow expected to bypass Pond B cannot be determined. Using additional catch basins and increasing the pipe capacity of the storm sewer system along Rutherford Road would help prevent the bypassing of flow from Pond B: Adjusting the street grades along Rutherford Road so that the low point drains to Pond B instead of Long Lake is a recommended option for consideration. L ' Bonestroo, Rosene, Anderlik and Associates Page 3 of 5 2335 West Highway 36 # St. Paul, MN 55113 # Phone: 612-636-4600# Fax: 612 - 636 -1311 Bonestroo Memo °'�e� Anderlik & Assodates Engineen 6 Architects The HWL and drawdown time of Pond B for various storm events is provided in the following table Storm Event (inches) Return Frequency (24- hours) HWL (assumes 5" orifice is clear of debris) Drawdown time to 903' elevation HWL (assumes 5" orifice is plugged) Drawdown time to 903' elevation (days) 5.9 100 -year 906.3' 2 906.8' 2.6 4.2 10 -year 904.3' 1 904.7' 1.5 . 3.5 5 -year 903.5' 0.7 903.9' 1 Pond C: Pond C is located adjacent to Long Lake. The direct drainage area to Pond C is approximately 15.8 acres. This pond is the last in a series before runoff is discharged to Long Lake. The designed outlet is an overflow spillway at 892'. The rate control provided by this pond is fairly insignificant. The water quality benefits of this pond basin will be limited also. Because the pond in on- line with the upstream ponds, runoff'entering the pond from the direct watershed will be flushed out of the pond by the upstream flow prior to treatment (sedimentation of fines). The pond benefits will be limited to being a sediment trap for larger sand particles. In this ponding area, the situation can not be improved without constructing a dual storm sewer system to bypass the flow from Pond B to Long Lake. The expense of a dual system would likely outweigh its benefits. The amount of wet storage provided is 0.9 acre -feet. Ignoring the design situation above, the required wet storage for water quality purposes (runoff from a 2.5 -inch rainfall) is 0.3 acre -feet based on an average CN of 72. The 100 -year HWL of Pond C was modeled to be 894' assuming 0.8 acre -feet of dry storage and a peak flow rate of 45 cfs. A skimmer structure is to be provided. H n L u u Direct Drainage to Long Lake: An area of concern is the drainage of approximately 8.1 acre of residential area in the southwest portion of the development (served by storm sewer) into a shallow ' wetland (Wetland G) along Long Lake. The existing drainage area of the wetland is less than 2 acres. Because of space constraints and issues with removing trees, no pretreatment of the runoff prior to , discharge into the wetland has been designed. The likely result if this design if implemented is erosion downstream of the storm sewer discharge, sediment deposition within the wetland, and degradation of ' the wetland(s). In terms of water quality protection, the best option is to pre -treat the runoff prior to discharge. In terms of erosion control, the best option is to discharge the storm sewer directly into Long Lake. The estimated post development 100 -year flow rate into the wetland is estimated to be in excess of 25 cfs. Additional discussion and design with City Staff is recommended for this area. Bonestroo, Rosene, Anderlik and Associates Page 4 of 5 ' 2335 West Highway 36 # St. Paul, MN 55113 # Phone: 612 - 636 -4600 # Fax: 612 -636 -1311 Bonestroo O arm i2o Anderl erlik & Associates Engineers S Architects Drainage to Village Commercial Area: Approximately 42.6 acres within the northeast corner of Liberty Development will drain to Pond A at the intersection of CR 15 (Manning Ave.) and CSAH 12. An additional ' 290 acres west of Manning Avenue also drains into the Liberty Development. This acreage from Grant is primarily agricultural. An inlet restriction (section of 33" diameter pipe) is to be placed at the upstream end ' of the existing 54" culvert under CSAH 12. With the inlet restriction the outlet elevation is to be raised to 902'. Pond A is currently designed with approximately 1.8 acre -feet of wet storage. The amount of wet ' storage required for water quality purposes is 4.1 acre -feet based on an average CN of 83. As recommended previously, ponding basins for water quality are recommended to be constructed "off -line" from the drainage coming across Manning Ave, especially the drainage from subdistrict S102 as labeled in the AUAR. The 100 -year HWL of Pond A is 908.7', assuming 10 acre -feet of dry storage and a peak flow rate of 66 cfs. This is close the rate control requested earlier of 60 cfs. The pond calculations submitted ' for review show a HWL of 909.1 and a peak discharge of 87.5 cfs. I don't have an immediate reason for the difference other than differing assumptions for runoff west of CR 15. Regardless, the HWL for Pond A is above the low point of CSAH 12 (elevation 907.6'). A berm /dike with a top elevation of 910' is shown on the plans to separate Pond A and CSAH 12. Since the HWL is significantly higher that what occurs presently, and the existing storage volume of Pond A will be significantly reduced based on the current plans, Washington County Pubic Works staff will likely have some concerns. A skimmer structure is to be included in the design of the pond outlet. Drainage along RO.W, for CSAH 12: Approximately 8.8 acre drains across CSAH 12 in addition to what ' drains through Pond A and Pond B (existing outlet). Most of the acreage drains through the 42" culvert under CSAH 12 just north of the entrance road for Rutherford Elementary School and down:a drainage ' swale north of CSAH 12. The storm drainage plans inadvertently show additional acreage (approximately 25.3 acres) east of the school draining to the 42" culvert. This drainage area in actuality drains to the east 'and then north under CSAH 12 through another 42" culvert. The post - development 100 -year peak discharge through the 42" culvert is approximately 24 cfs. The runoff will be fairly peaky, due to the amount of impervious surface associated with development. To reduce the peak discharge through the 42" culvert, runoff from the School House Circle is recommended to be captured by storm sewer and directed into Pond B. Implementing this recommendation will also have an added water quality benefit, since there ' is currently no water quality provisions for this drainage area. Bonestroo, Rosene, Anderlik and Associates Page 5 of 5 2335 West Highway 36 # St. Paul, MN 55113 # Phone: 612 - 636 -4600 # Fax: 612 -636 -1311 r JA Bonestroo �. Rosene Anderlik & Associates Engineers & Architects Bonestroo. Rosene, Anderlik and Associates, Inc. is an Affirmative Action /Equal Opportunity Employer Principals: Otto G. Bonestroo, P.E. • Joseph C. Anderlik, P.E. • Marvin L. Sorvala, P.E. Richard E. Turner, P.E. • Glenn R. Cook, P.E. • Robert G. Schunicht. P.E. • Jerry A. Bourdon, P.E. Robert W. Rosene, P.E. and Susan M. Eberlin, C.P.A., Senior Consultants Associate Principals: Howard A. Sanford, P.E. • Keith A. Gordon, P.E. • Robert R. Pfefferle, P.E. Richard W. Foster, P.E. • David O. Loskota. P.E. • Robert C. Russek, A.I.A. • Mark A. Hanson, P.E. Michael T Rautmann. P.E. • Ted K.Field, P.E. • Kenneth P. Anderson, P.E. • Mark R. Rolfs, P.E. Sidney P. Williamson, P.E., L.S. • Robert F. Kotsmith Offices., St. Paul, Rochester, Willmar and St. Cloud, MN • Milwaukee, WI TO: Steve Russell and Klayton Eckles, City of Stillwater FROM: Sherri A. Buss, M.L.A., Natural Resources Specialist Bonestroo & Associates 604 -4758 SUBJECT: Stillwater AUAR Development Reviews: TBE LEGENDS DATE: December 10, 1997 The comments that follow evaluate "The Legends" development, based on the goals and strategies adopted as a part of the Stillwater AUAR Mitigation Plan. Only the goals applicable to the proposed development are referenced in this review. Goal 1: Strategies to Protect Water Quality and Quantity in Browns Creek The Mitigation Plan suggests that developers use a variety of methods to protect water quality and quantity in Browns Creek, including methods to reduce impervious surface, reduce the rates of storm water flow, and infiltrate storm water. The Pemtom Company has proposed to reduce the width of streets and setbacks from current city standards, and therefore significantly reduce the amount of impervious surface over the development. The plans do not indicate specific methods to infiltrate stormwater. Some options could include use of backyard swales, recessed islands in cul -de -sacs, and use of sheet flow or french drain -type structures in low areas and open space areas to promote infiltration. Examples of such structures used in the City of Maplewood's Innovative Storm Water Project are attached. This project recently one a national EPA award for Urban Storm Water Management. As designs become more detailed, additional strategies. suggested in the AUAR that could ' be included in the development to promote infiltration of storm water include: use permeable pipes to transport and exfiltrate storm water; direct downspouts from roofs over yards or other vegetated areas and away from paved surfaces; and use plantings of ' native vegetation on public or private properties to slow and infiltrate storm water. Erik Peters will provide comments related to the proposal's drainage and storm water ' plans. 1 2335 West Highway 36 ■ St. Gaul, MN 55113 ■ 612 - 636 -4600 ■ Fax: 612 - 636-1311 Goal 2: Strategies to maintain or improve groundwater flows Elements designed to reduce impervious surfaces and infiltrate storm water that are described under Goal 1 will also help to achieve this goal. Goal 4: Implement Stillwater's Forest Protection Ordinance and encourage Woodland restoration The Pemtom development includes protection of a signficant oak woodland area and existing wetlands, helping to meet this goal. Pemtom should be encouraged to maintain the native shrub and ground cover layers in this woodland, and remove exotic species, to maintain the health and habitat value of the woods. The documents provided to date do not include a Forest Management Plan, required by The Stillwater Forest Protection Ordinance. This plan should be developed, and should specific elements for protecting oak resources in the development during construction activities, as outlined in the Mitigation Plan. The Plan should also describe plantings that will be included in the development for the loss of woodlands in areas of construction. The City may choose to suggest that developers use species that are native to oak woodlands, oak savannas, and wetlands in this region in new plantings with the development. This is consistent with goals in the AUAR Mitigation Plan to mitigation for woodland losses through plantings, and with developer and city goals to emphasize. the City's heritage in the aesthetics of the development. Use of native species and landscape structures (such as plantings that include typical canopy, shrub and ground layers) is a way to recall the heritage of the area. Lists of native species have been attached as information. Goal 6: Identify wildlife and recreation corridors and adopt plans for these areas Pemtom development proposal includes a proposed trail and easement along Long Lake and through the woodland park, which is consistent with Goal 6 of the Mitigation Plan. In developing the trail, an uncut buffer of native vegetation at least 25 -50 feet wide should be maintained along the shore of Long Lake, to protect the shoreline and habitat areas. As much native vegetation as possible, including canopy, shrub and ground layers should be saved within the trail corridor easement. Any plantings in the easement should use native species to enhance habitat value and reduce long -term mainenance. Where steep slopes are present, the trail should be meandered to run parallel, rather than perpendicular to slopes, and plantings or structural elements added to prevent erosion. Goal 7: Protect or improve the water quality of Long Lake The proposed plan indicates a public canoe access on the right -of -way of 62nd Street at ' Long Lake. Development t of this access would help to implement a recommendation in the Mitigation Plan to develop a public access for Long Lake. An access will increase ' the lake's eligibility for public funding to improve water quality. ' Goal 8: Assure that changes on Long Lake do not affect the water quality of Browns Creek and the St. Croix River ' The developer should provide information to new homeowners regarding actions that they can take to help maintain or improve the water quality of Long Lake. These include maintaining a buffer of native vegetation along the lake shore, limiting the use of lawn ' fertilizers containing phosphorus, and other practices to protect water quality. The Washington County Extension Service can provide educational materials for distribution to residents. ' Goal 12: Protect and maintain the quality of surface water flows to wetlands. Buffers indicated around wetlands in the proposed plan appear to be adequate based on ' Recommendations in the AUAR. ' Two large stormwater ponds have been included in the development plan. Plantings around these ponds should use native species and mimic natural wetlands, to promote storm water cleaning and provide habitat value. 7 n n 0 Bonestroo ROsene Anderlik Associates Engineers & Architects Bonestroo. Rosen, Anderlik and Associates. Inc. is an Affirmative Action /Equal Opportunity Employer Principals Otto G. Bonestroo. P.E. • Joseph C. Anderlik, P.E. - Marvin L Sorvala. P.E. Richard E. Turner, P.E. - Glenn R. Cook, P.E. - Robert G. Schunicht. P.E. • Jerry A. Bourdon, P.E. Robert W. Rosene. P.E. and Susan M. Eberlin, C.P.A., Senior Consultants Associate Principals: Howard A. Sanford, P.E. - Keith A. Gordon. P.E. • Robert R. Pfefferle,.P.E. Richard W. Foster, P.E. • David O. Loskota, P.E. - Robert C. Russek, A.I.A. - Mark A. Hanson. P.E. Michael T. Rautmann, P.E. - Ted K.Field. P.E. • Kenneth P. Anderson, P.E. • Mark R. Rolfs, P.E. Sidney P. Williamson. P.E.. LS. • Robert F. Kotsmith: Offices., St. Paul, Rochester, Willmar and St. Cloud, MN - Milwaukee, WI 0 TO: Steve Russell and Klayton Eckles, City of Stillwater FROM: Sherri A. Buss, M.L.A., Natural Resources Specialist Bonestroo & Associates 604 -4758 SUBJECT: Stillwater AUAR Development Reviews: LIBERTY ON THE LAKE DATE: December 10, 1997 The comments that follow evaluate the "Liberty on the Lake development, based on the goals and strategies adopted as a part of the Stillwater AUAR Mitigation Plan. Only the goals applicable to the proposed development are referenced in this review. Goal 1: Strategies to Protect Water Quality and Quantity in Browns Creek The Mitigation Plan suggests that developers use a variety of methods to protect water. quality and quantity in Browns Creek, including methods to reduce impervious surface, reduce the rates of storm water flow, and infiltrate storm water. The development team. for this project has proposed to reduce the width of streets and setbacks from current city standards, and therefore significantly reduce the amount of impervious surface over the development, The plans do not indicate specific methods to infiltrate stormwater. Some options could` include use of backyard swales, recessed islands in cul -de -sacs, and-use of sheet flow or french drain -type structures in low areas and open space areas to promote infiltration., Examples of such structures used in the City of Maplewood's Innovative Storm Water Project are attached. (This project recently one a national EPA award for Urban Storm Water Management. )' As designs become more detailed, additional strategies suggested in the AUAR that could be included in the development to promote infiltration of storm water include: use permeable pipes to transport and exfiltrate storm water; direct downspouts from roofs over-yards or other vegetated areas and away from paved surfaces; and use plantings of native vegetation on public or private properties to slow and infiltrate storm water. Erik Peters will provide comments related to the proposal's drainage and storm water plans. 2335 West Highway 36 ■ St. Paul, MN 55113 ■_612-636-4600 ■ -Fay• A17-A24-1131111 - 1 v 1 L� l� ' Goal 2: Strategies to maintain or improve groundwater P �' r flows ' Elements designed to reduce impervious surfaces and infiltrate storm water that are described under Goal 1 will also help to achieve this goal. Goal. 4 Implement Stillwater's Forest Protection Ordinance and encourage, ' Woodland restoration The documents provided to date do not include a Forest Management Plan, required.by The Stillwater Forest Protection Ordinance. This plan should be developed, and should specific elements for protecting oak resources in the development during construction ' activities, as outlined in the Mitigation Plan. The Plan should also describe plantings that will be included in the development for the loss of woodlands in areas of construction. The City may choose to suggest that developers use species that are native to oak woodlands, oak savannas, and wetlands in this region in new plantings with the. development. This is consistent with goals in the AUAR Mitigation Plan to mitigation ' for woodland losses through plantings, and with developer and city goals to emphasize the City's heritage in the aesthetics of the development. Use of native species and landscape structures (such as plantings that include typical canopy, shrub and ground ' layers) is a way to recall the heritage of the area. Lists.of native species have been attached as information. ' The planting plan should be revised to eliminate the use of invasive exotic species listed on the current plan. These species are invading oak woodlands throughout Washington County and Minnesota, and significantly reducing their diversity and habitat quality. ' Park departments and natural resource agencies are spending thousands of dollars each year to eradicate these species in public woodlands and restore their quality. The species ' that should be eliminated include the following: Amur maple (Acer ginnal'a) Russian olive (Elaeagnus angustifolia) ' Columnar buckthorn (Rhamnus cathartica) All Honeysuckles (Lonicera sp.) ' Goal 6: Identify wildlife and recreation corridors and adopt plans -for these areas. The development proposal includes a proposed trail and easement along on Lake . which is consistent with the Mitigation Plan. g g ' In developing the trail, an uncut buffer of native vegetation at least 25 -50 feet wide - should be maintained along the shore of Long Lake, to protect the shoreline and habitat ' areas. As much native vegetation as possible, including canopy, shrub and ground layers should be saved within the trail corridor easement. Any plantings in the easement should use native species to enhance habitat value and reduce long -term maintenance. Where steep slopes are present, the trail should be meandered to run parallel, rather than perpendicular to slopes, and plantings or structural elements added to prevent erosion. Goal 8: Assure that changes on Long Lake do not affect the water quality of Browns Creek and the St. Croix River The developer should provide information to new homeowners regarding actions that they can take to help maintain or improve the water quality of Long Lake. These include maintaining a buffer of native vegetation along the lake shore, limiting the use of lawn fertilizers containing phosphorus, and other practices to protect water quality. The Washington County Extension Service can provide educational materials for distribution to residents. Goal 12: Protect and maintain the quality of surface water flows to wetlands. Plans should indicate the size of buffers to be maintained around wetlands as the area is developed. Buffers should be maintained as undisturbed vegetation. Plantings around storm water ponds should use native species and mimic natural wetlands, to promote storm water cleaning and provide habitat value. SHORELAND � O E � (Draft) 1 1 1 1 1 1 1 1 1 Draft Shoreland Ordinance Amendment Wetland protection natural buffer zone. (a) Scope ofApplication.. This section shall apply to any property included within any plat for which an application therefore was filed on or after the effective date of this section. This section shall ' not apply to any of the following: (1) Structures located within a wetland buffer zone on the effective date of this section or the ' remodeling, reconstruction or replacement of such structures provided that it does not take up additional land within the wetland buffer zone. (2) The construction or maintenance of public drainage facilities or temporary erosion control improvements. ' (3) The construction or maintenance of public utilities, provided there is no other practical alternate location. ' (4) The construction or maintenance of public or private trails provided the trail surface is not of impervious materials and the buffer zone is expanded, where possible, in area equal to the ' width of the trail corridor, including disturbed areas. (b) Wetland Buffer Zone Required. On all public and private property which abuts a wetland, a ' wetland buffer zone shall be preserved or established and maintained in accordance with the following requirements: ' (1) Wetland protective natural buffer zone shall mean the area between a line delineating the wetland edge and,a line parallel to and upland one -half the distance of the required setback. ' For Brown's Creek or tributaries of Brown's Creek, the buffer zone shall be 100 feet form the middle of the creek or 25 feet beyond the associated tributary wetland whichever is greater. ' (2) Any buffer zone that is to be preserved or established shall have approved erosion control measures installed and inspected prior to any land disturbing activity; ' (3) Any buffer zone that is to be reserved in a natural condition shall have the natural plant p p growth inspected and approved by the city prior to any land disturbing activity; ' (4) An buffer zone that is to be established Y b shed during any land disturbing activity shall have proposed plantings approved by the city; (5) Erosion control measures shall be maintained until land disturbing activities are complete and removal is approved by the city; (6) When platting, the plat must show the wetland edge as approved by the city; and the wetland protective buffer zone. (7) Buffer zones shall be maintained in a natural condition indefinitely; (8) The owner or occupant of any property abutting any wetlands shall not conduct or permit any of the following activities within the wetland buffer zone: i. vegetation alteration, including clear- cutting; ii. topographic alteration, including but not limited to grading, filling, excavation and extractions; iii construction, placement or installation of any structure; iv dumping or disposing of any material foreign to the natural state of the wetland; and (9) Land disturbing activity that is proposed outside of any established wetland buffer zone which may impact the buffer zone and/or wetland, shall be approved by the city before the activity begins. (c) Wetland Buffer Zone Identified. The setback line of the wetland buffer zone shall be identified by permanent markers, which have been approved by the city, at each lot line, but in no case more than 300 feet apart. All markers shall be correctly installed prior to the issuance of any natural resources permit. 6 � WETLAND � DELINEATION AND � WETLAND MITIGATION � FOR THE � DEVELOPMENTS 1 1 1 1 1 1 1 ARLIGENVIRONMENTAL, INC. Moll'+,P 1F i:r •ni'�`�- titL.. i:, B'r- ': -1:±f K -. .�+.- 7. - s rJ,n: ,r - e ' Report To: Dan Obermiller E.G: Rud &Sons, Inc. From: Patricia Arlig !�'�✓' Date: July 2, 1995 1 I WETLAND DELINEATION THE CENTER FOUR 114, 114 SECTIONS OF SECTION 31, T30N, R20w STILLWATER, MINNESOTA ' Hans Hagen Homes plans to develop residential lots on the property referenced above. The property includes approximately 76 acres of land which is to be subdivided into single family ' residential lots. Most of the property was recently plowed and cultivated. The north 250 feet is wooded and not cultivated. Long Lake is located along the east edge of the property. A wetland delineation according to the requirements of the MN 1991 Wetland Conservation Act (WCA) is required prior to development of this property. Arlig Environmental was retained to delineate the wetlands on the site. Patricia Arlig, an environmental engineer trained to complete wetland delineations, placed stakes at the edge of the wetlands on the property. The field work was completed on April 22, 1995. The weather in late March was exceptionally warm. However, the temperatures dropped in early April and precipitation included both rain and snow. There had been heavy rains during the week before this field delineation. The water levels were expected to be seasonally normal. The wetlands on the site appeared to be at, or near, the ordinary high water ' levels. Surveyors from E.G. Rud & Sons, Inc. located the stakes and prepared a drawing showing those areas. Wetlands were identified and delineated using the guidelines of the FEDERAL MANUAL FOR IDENTIFYING AND DELINEATING WETLANDS (1989) and the CORPS OF ENGINEERS WETLAND DELINEATION MAM.IAL (1987). The available maps were reviewed prior to the field delineation. ' Copies of the maps showing the project vicinity are attached. The SCS map was obtained for Washington County. The soils on or near the site are designated as Auburndale, Freer, and Ronneby which are on the Hydric Soils list and Antigo, Duluth, Freon, Mahtomcdi, Rosholt, and ' Santiago which are not considered hydric soils. The . MN DNR Protected Waters map for Washington County shows Long Lake as Protected Water with a ordinary high water level of 891.5. The NWI map shows four wetland areas on the site. They are labeled as Wetlands #1, ' #4, #6, and #7 in this report. They are designated as a PEMC, PEMC, PUBF, and PEMC on that NWI map. The other three wetlands on the site are not designated as wetlands on the NWI ' or DNR maps. Field investigation began by observing the vegetation and drainage patterns. An aerial photograph and a contour drawing provided by Rud were also reviewed to identify possible wetlands. The preliminary wetland edges were determined based on vegetation. The soils were tested by digging holes to a depth of at least 18" using a narrow bladed shovel at upland and wetland locations. A soil probe with a 3/4" opening was used to verify soil conditions around the wetland perimeters. Soil colors were determined by matching them to a Munsell Soil Color Chart. Characteristics such as presence of motteling, gleying and moisture were observed and noted. The edge of the wetland was determined to be near the point where subsurface water was within 18" of the ground elevation and where hydric soils and wetland vegetation were encountered.- Soil samples were observed at points well inside the we: etlands, at the wetland edges, and into the upland zones. The test holes were refilled. Wire stakes with pink flags were placed on the delineated wetland edges. The stakes were placed at the determined edge using all three criteria; hydrophytic vegetation, hydric soils, and hydrology. Physical characteristics such as change in grade and deposits of debris were also used to determine the wetland edge. Data Forms - Routine Onsite Determination Method were completed for conditions at each wetland. The approximate locations of the wetlands are highlighted on a copy of the contour drawing provided by you. WETLAND #1 is located in the northeast corner of the site. It had open water and is surrounded by oak trees. The water elevation on the contour map is 894. WETLAND #2 is located south of Wetland #1. It had open water and is surrounded by oak trees. It is shown as contour 900 on the drawing. WETLAND #3 is overlapped the west property line. It is at approximate elevation of 934. It had some open water at the time of this site visit. WETLAND #4 is located south and east of Wetland #3. The map shows the water elevation at 926.6. WETLAND #5 is located East of Wetland #4. It is at the approximate elevation of 924. WETLAND #6 is located south of Wetland #5. The drawing shows the water elevation at 920.7. WETLAND #7 is located south and west of Wetland #6. It is at the approximate contour labeled as 926 on the contour drawing. No additional wetlands were found on the site. Photographs were taken of the site and are submitted to with this report. Copies of the SCS map and the NWI map showing the site are also attached. Please contact Patricia Arlig at (924 -2354) with any questions regarding this information 95018 wet •'Puec,,, ._ter.' PEfuC' •, - ' ' � 5' t • •.. . 7-51 111r.nif 4. 71,; ; PEMG:j Y`r Pet+lttl- - a R43e 1�PF,MA i / A PSSI�I -PEMe Pu ' C3- -PUB( PaM - - PEPS b• �j l Ems'-- �'F�71G '� ., ;. •r- -t��: dy ! ,• P ,,rA 8 . . .. , l PIBd9�' • •�ti�. •,ly.f:��'.r j b PEMG '. ,ty �_^"; .'o I PEMF r j{7"`Pubt f • y•: i+ ' J :�;) /� )AG f1 PSSt9 �E✓IU ` V 7 `�PEM89 ,J y4 �� varut, ./. �. �- �tJ• -' f" t" ;•,. r ��; Pub Pua-fl i0 Pti1B8' • c r •.s ri `. —PEMG PE � EMG` ``y.�._ •' • r k ay.L ;.��1.. 41:: : o t( —PEMG Dub ;,�' ,� = ; =', ,1 '�,'j „': �. ..'•► 1t. V d, ',, ;y�,.`b io p93fsr.' C •i•, �; g j . f ,:.• �• !_ � .� + AS.18G ?' r jt,s ' :"'j,�:_" �f�• ..Ll -'P Pt18Ca� 4 ,� I' ;a•'w `. t_,:y ,. OEM& L1U6H t �:r 4•'r," 1] \ \(J {���(j'f.' •, i �� ,!! �.,•. t� l I~ 1�Ur t_ E` i.{ PU8F ' PEMF �.: ► U ' Q �� i:.f"�'% (��_r >` .;' ;.F . L'J ::. I s.' PUBG j •l ,�' *6 �'i)u �c� 1 ;2,'• It'll. :ak i'. L1UBH + 3. 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R. 20 W. 2 295 000 FEET 454C 498 15 498 1847 y9 49 12 49C 166: 544 O Q 120 'S44� 120 br 496 498 120 y..'. 120 :f• 456 189 e.; vy :/'fir ,a,''? •$•. 3678 120 498 pG 49B 120 OZC 120 r e {i 452 454C 445 1847 496 -3428 t tN 3678 498 i`s . o, 498 4961 =_. 1� 1 • 120 BA �� 30 f s + • <Sti T .j 25 9678 i1-, 1ssC ?', l` y? rl�illy' ;ya v 1: ; °�• jl� „. r L� y .ti>:3'r .Sr ttu visY.� e�Y'ti a 342D + 120 l: 342C R s p� r'�i ie 49 498 f `i, • '': a �Y 498 i 454D G '' t ' 3428 Z 3�1 449 w 1055 i+ : S 49 452 t qjt�, 1 SM1C n {S yc �: a G 496 w� �F9i� a .120 `�i302C f �4. `� ; ?ji "�iti?•.. `Y o P° 49C 449 y _ 3028 : "fi• ` }*. '302C: y� ; s 3 L:, 498 ��28 • .d�•;T:.k s 861C a 498 . d 'r %•. ' .10 12 34 _X tL 3678 �� 454C 449. �° 49 r } rC :452 j'% y y ij�y: - • L 153C 49C v f, 189 Oyu' t3' 153C 496 e t • - 858C S 452 ♦5 ..{G. .. 861C 189 4 .p cF j tzY 120498 ' o 3428 • � . •�� �'t' +;t1�3l�' .N r.;y' .i'je6• i, �� '.aw9 ''� V�'. 266 153C 0 04C tc, 189 ssi.vrr -.�lL sd + '`� � :t•; ? �r � e `+ rM �r_L•.. wales A 1538 048 ` 1847 5048 264 it.-Ii �.ek` 153C . °� '•EwS.Y.: waler y 1 ' 498 1' 1538:..:- 266 1 i 538 0 C 8 + ' >a 138 .^ . 1 342C 04 * > Pfl g ' `Y � � = '. • ass ,� � , •,. $ � , g 266 153C 6 1698' ,� V . 3426••n6 ¢ i ?y 266 504B 342C 189 t5 f` 1055 5048 ` :aa'�AT - „�'`•.:� ; 4: 342C 342 8 ” 1536 325 1420 342C �':' t :..� 45 0:,� —; y.....e, � 342C 153C 4�0 :. :.. 264 p' 452 49 B 266 428 f ," lj: is� ;• y '507.'.: 3028 342C .t'• �` •rrr.�:.i.. •, @. 0 449 1g9 7 120 f 1847 49,'' 152R te9 a ?C omo _ •s3e 342C 21 36 896C 266 266 3420 yc 4(4-6 K0?1(\e '�''� 60 Fite -� scV l�L)IJ��� JEr ny0 le�,— 1 C9 3 1 DATA FORM ROUTINE ONSITE DETERMINATION METHOD Field Investsgator(is): a lz Date, ' Project/Ske:- }.1 �� f r State: Coun rU I ApplicantOwner. s -_ V1 plant Community it/Nam e; n e, Note: If amore detailed she desc ti ' n Is neoassary, use the back of data form or afield notebook --------------------------------------------------- Do norm nvironmer;W conditions -exist at the plant communal Yes ✓ No Has the vegetation, , and/or hydrology been significantly disturbed? Yes No ---------------------------------------------------- WETLAND VEGETATION Indicator UPLAND VEGETATION Indio t Dominant Plant Speaks Status • Stratum *Dominant Plant Species Status Stratum ' 1. — 6CdA r_ D6t Fih,a, �.,�_ :. li .FAr-Q 2. - .5� , We-eal .23� � .2 -� r�.F� �c� JEfl`> C U 3. - 'g.� 1 c-Jo �- IL�� _ g, ' 4• 4. 5. 5. 6. 6. 8. 8, 10. Percent of dominant spades that are 08L, FACW, and/or FAG 70 Is the hydrophytic%Wetation criterion met? Yes ✓ No Ratio ale: -�-y ' SOILS Series/phase:- 2 °� `o { Subgroup? ' Is the soil 'an the hyd& soils list? Yes No' ,yG Undetermined Is the soil a Histosol? Yes No � Histic epiipedon present? Yes No Is the soil: Mottled? Yes No Gleyed? -Yes __,, No Matrix Color: 511 •M !!L, /r Mottle Colors: Other hydric soil ' Is the hydr'►c soil criterion met? Ye _— No Rationale: HYDROLOGY 3�'" `"�;� 0 y 2� Is the ground surface inundated? Yes _y_/ No Surface waterziepth: °? s Is the soil saturated? Yes ✓ No Depth to tree - standing water In ph/soil probe hole: Z--* Ust r field evWer5e of surface fnund t* soil sal ratio Is the we nd hydroiNy criter' n met? Yes _, ' No Rationale; JURISDICTIONAL DETERMINATION AND RATIONALE Is the plant community a wetland? Yes ✓ No . Rational f risdid nal decision: / ' DATA FORM ROUTINE ONStTE DETERMINATION METHOD Feld Investigator (s): Date: Projocvsho: State: M tv Coun W46 8 i W6 TOM Applicant/Owner: Plant Community #/Name: �"'► G r+-of �--� NONOW K amore detailed she de `" ption is necessary, use the back of data form or a field notebook Do normal �vironmenLa! conditions exist at the plant community? --------------------------------------------------- Do ' Yes No Has the --- vegetation, , and/or hydrology been slgnifcantfy disturbed? YesN- -------------------------------------- - - - - -- ' WETLAND VEGETATION Indicator UPLAND VEGETATION Indicator ' Dominant Plant Species Status Stratum 'Dominant Plant Species Status Stratum 1. a, r. t . VAC .0 2St6, 2. FAt. 3. rA`� 3. 3. 4. 4. l _b 1e► c A aa-tL U 5. 5. 7. J. , 8. 8. ,o. Y�Percent of dominant spades that are OBL, FACW, and/or FAC D Is the hydrophytic vegetation criterion met? Yes ✓ No Rationale: SOILS Series/phase: -= Q�t��'� -�'�7 Subgroup :2 Is the soil on the hydric soils list? Yes No _L.G Undetermined 1 Is the soil a Histosol? Yes No listic epipedon present? Yes No Is the soil: Mottled? ,Yes No Gleyed? -Yes No .i Matrix Color: mo__ Mottle Colors: /a f /A -I- Other hydric soil indicators: Is the hydric soil criterion met? Yes 0 ./ No rcauonaie• HYDROLOGY Is the ground surface inundated? Yes_,, No Surface water depth: Is the soil saturated? Yes,/ No Depth to free- standing water in pNsoil probe hole: List other field evidence of su ce inundation or soil saturation. - c► Is the wetland hydrology criterion melf Yes ✓ No ' Rationa _ IN G�- JURISDICTk&AL DETERMINATION AND RATIONALE ��""i -^�" LA Is the plant community a wetland? Yes ✓ No Rationale for iuri.sdictional decision: w�l�✓ ✓ � T C.. A rYD #' � DATA FORM ROUTINE ONSITE DETERMINATION METHOD Fields Investigator(s): a �% Date. z - Projecushe :_S 1. / 0 � State: Coun 3 s F4; Applicant/Owner: 14^5 `"�`'"� Plant Community lliName: � P AC- Note. If amore detailed she description is necassary. use the back of data tome or a field not --------------------------------------------------- Do normal environmental condition-s-exist at the plant community? Yes _-No Has the vegetation, sots, and/or hydrology been significantly disturbed? Yes No - - - - -- ----------------- --- --------------- - - - - - -_ WETLAND VEGETATION Indicator UPLAND VEGETATION Indicator Dominant Plant Spedes Status Stratum 'Dominant Plant Specles S�- tatu-u-ss�- Stratum 1. - kee c- r�G -,., F� t. C6C L r�-� _ 2. t-.5 oa A4w 2. 3 (k 6e r r• a ;4cilk 6, 6. 7• ;7. 8. 8. Percent of dominant specles that are OBL, FACW, and/or FAC d Z2 Is the hydrophytic vegetation criterion met? Yes G No Rationa SOILS Serleslphase: o lo Subgroup? Is the soil on the hydric soils list es sG No Undetermined Is the soil a Histosol? Yes No ,/Histic epipedon present? Yes No Is the soil: Mottled? Yes No Gleyed? -Yes ✓ No Matrix Color: Mottle Colors • ,�� Other hydric soil indicators: Is the hydric soil criterion met? Yes No 0 ��- Rationale: HYDROL. GY •� Is the ground surface Inundated? Yes _,� No Surface waterrziepth: C.+-� •, Is the soil saturated? Yes _3,,- No a ., Depth to free-standing water In pit//soil probe hole List o1her field evidence of surface inundat n or soil saturat Is the wetlstn&ydroWy criterio met? Yes L;--" No Cd Rats ab; ' .JURISDICTIONAL DETER INATIO AND RATIONALE Is the plant community'a wetland ?. Yes ✓_ No Ratio ai t r'jur'isdictional decision:" 1 Loo ArG- DATA FORM a"'I ROUTINE ONSITE DETERMINATION METHOD •�� , /'�� Field Investigator s): r �• Date: Project/She: i � Tort/ State: County:. t ty Applicant/Owne r: ` Plant Community /Name: Note: If amore detailed she descdptioA is necessary, use the back of data form or a field notebook Do normal environmental conditions exist at the plant community? /1 b� `� Yes No --- P pew o Has the vegetation, sots, ancvor hydrology been significantly disturbed? \'�""`� �--• -� '� r-% Yes -- — -------------------- --- - - - - -- --------------- WETLAND VEGETATION Indicator UPLAND VEGETATION Indicator Dominant Plant Species Status Stratum 'Dominant Plant Species Status Stratum 1. t, 2. 2 0 ✓� 3. 3. , 4. 4. 5. 5. 7. ;7. 8. 8. 10. Percent of dominant species that are OBL, FACW, and/or FAG Is the hydrophytic vegetation criterion met? Yes No Sedes/phase: Subgroup:2 Is the soil on the hydric soils list? Yes - No Undetermined Is the soil a Histosol? Yes No _,GHistic ep'ipedon present? Yes No Is the soil: Mott l4?, Yes No feleyed? -Yes No Matra Color. v !- Mottle C�, lors: Other hydric soil indicators: �O Is the hydric soil criterion met? Yes No Rationale: , A v " HYDROLOGY Is the ground surface inundated? Yes �_ No Surface water depth: a -y is the soil saturated? Yes No Depth to free-standing water in ph/soil probe hole: List other field evidence of surface inundation or soil saturation. Is the wetland hydrology criterion met? Yes _L,-" No v JURISDICTIONAL DETERMINATION AND RAITONALE" v Is the plant community a wetland? Yes No Ratio ale for "urisdi tonal decision u 0 I 11 J -��Wo _0 V DATA FORM r ROUTINE ONSITE DETERMINATION METHOD Field Investigators : r `` Date: oo - ProjecUSite: State: Coun�C, R.5N 1 67a ApplicantK?wner. e- Plant Community #/Name: "►�F_ �'i G NOW If amore detailed site description Is necessary, use the back of data form or a field notebook Do normal environmental conditions -exist at the plant community? Yes ✓No Has the vegetation, sots, a=or hydrology been slgnificentfy disturbed? Yes No ; WETLAND VEGETATION Indicator UPLAND VEGETATION Dominant Plant Specjw Status • Stratum 'Dominant Plant Species 1. rAco t s3i 2. .2 3. Q 4. S�� K•or,� cJ 3• Or- 5. J; 5. 6. 6. 7. ;8. 8. 10. Percent of dominant species that are OBL, FACK and/or FAG Is the hydrophytic vegetation criterion met? Yes ---No Indicator Status Stratum Fite-3 +-re< Is the soil a Histosol? Yes Is the soil: Mottled? Yes Matrix Color: Other hydr'ic soil in icators: —� No ✓Histic ep'ipedon present? Yes No -/ No ,—,,AGleyed? -Yes --*No is the hydric soil criterion met? Yes Rationale: _ 4 (j.���e:•ri.s � � Oz�1, Icy HYDROLOGY / p7 ,r Is the ground surface inundated? Yes _� No Surface water'depth: Is the soil saturated? Yes ✓ No Depth to f roe-standing water in ph/soil probe hole: List other field ovidence of smrface inundation or soil saturation. Is the wetland hydrology criterion mdt Yes •/ No t. JURISDICTIONAL Is the plant community wetland? Yes ✓ No Rationale_ w1urisdictional decision: TION AND RATIONALE I f 5 TLA WD —41 ,5— DATA FORM ROUTINE ONSITE DETERMINATION METHOD Field Investigator(s): r Date: Projec!/Site: State: County:. ApplicantK?wner. Plant Community #/Name: Note: tf a.more detailed she description Is necessary, use the back of data form or a field notebook J Do normal environmental conditions -exist at the plant community? Yes . /No Has the vegetation, sots, andfor hydrology been significantly disturbed? Yes No WETLAND VEGETATION Indicator UPLAND VEGETATION Indictor Dominant Plant Species Status • Stratum 'Dominant Plant Species Status Stratum 1. - Ktt d t. 2. — .2. 1312 t k 1' ►-�'� f-rG� 3. 3. 4. 4. 5. 5. 6. 6, 7. i7. a. 8. 10. Percent of dominarit species that are OBL, FACK and/or FAG ?� Is the hydrophytic vegetation criterion met? Yes ✓ No SOILS U V SerieVphase: — � - •- Subgroup 2 Is the soil on the hydric soils list? Yes ' No _� Undetermined Is the soil a Histosol? Yes No Htstic epipedon present? Yes No Is the soil: Mo Yes _�� No Gleyed? -Yes _,G o Matrix Co lor. e.-. /O - - Mottle Colors• �� �,� �• J �2 Other hydric soil indicators: Is the hydric soil criterion met? Yes ,-- No HYDROL0GY v Is the ground surface inundated? Yes__yL No Surface wateriiepth; Is the soil saturated? Yes _� No f a „ Depth to free - standing water in pit/soii probe hole: Liststherfield evidence of surface inundation or soil saturation. Is the wetland hydrolUoy criterion met? Yes ..� No Rationale; _-, JURISDICTIONAL DETERMINATION ANO RATIONALE Is the plant community a wetland? Yes A-- No J n G , 1 ' DATA FORM G ROUTINE ONSiTE DETERMINATION METHOD Feld Investigator( pate: `� O� ' Project/Site: State : Counttyy R3 0 ApplicantK?wner. 4- Punt Community #/Name: IO tS f: o.,., rU t Note: If amore detailed she descri ' n is necessary. use the back of data form or a field notebook ' Do normal environmental conditions -exist at the plant community? - - - - - - - - -- -rap - Yes No Z Has the vegetation. soils. and/or hydrology been significantly disturbed? ' Yes - -- No - - -- z--------------------------------- - - - - -- ' WETLAND VEGETATION indicator UPLAND VEGETATION Dominant Plant saes Status Stratum 'Domin�Iant Specks g070. 2: 1. 3. 3 4• 4. S. 5. 6. . 7. .77. 8• 8. 1 10. Percent of dominant species that are OBL. FACW. and/or FAG O / O is the hydrophytic vegetation criterion met? Yes / No 1 Rationale: . A - ii II SOILS Series/phase: �'� , Subgroup 2 Is the soil on the hydric soils list? Yes No ✓ Undetermined Is the soil a Histosol? Yes No ✓iHistic ep'ipedon present? Yes No Is the soil: Mottled? Yes- L,-, No Gleyed? -Yes _ No Matra Color. �— Mottle Colors. ] %W' /a iV2 Other hydric soil fnd'icators 2 Is the hydric soil criterion met? Yes •1 No Ratianata- Indicator Status Stratum HYDROLOW " C i, Is the ground surface inundated? Yes ' / No Surface water'depth: d `� Is the soil saturated? Yes __-- No „ Depth to free - standing water In pit/soil probe hose: / �7 L.istother field evidence of surface Inundation or,?oil saturation. ' Is the w and hydroiNy erion met? Yes,--,- No Rationale: _ . 0 0 JURISDICTIONAL DETERKfINATiON AND RATIONALE' Is the plant community a wetland? Yes _ � No tA) 6 -rL #W D :tL-(71 DATA FORM ROUTINE ONSfTE DETERMINATION METHOD Field Investigators • Date• Project/sh State: County-: R.S N 6 TO Applicant/Owner: Punt Community #*Name: ►�� M C e-+-� /Y ' Note: If a-more detailed site de necessary, use the back of data form or a field notebook - -------,-------------------------------------------- Do normal emiironmeraai conditions exist at the plant community? Yes No Has the vegetation, soils, ancvor hydrology been significantly disturbed? Yes , ZNo WETLAND VEGETATION Dominant Plant Species -�..i NO 7. 8. 9. 10 Indicator Status Jr� UPLAND VEGETATION Dominant Plant Species t, r- c x L c� 2 13 ro 3. - dolVe- co 4. �^ 6. ;7. 8. .9. Percent of dominant species that are OBL, FACW, and/or FAG Is the hydrophytic vegetation criterion met? Yes ✓ No lndica Status v _FJk Stratum Series/phase: -- .JJ 10 tl-% Subgroup? Is the soil on the hydric soils list? Yes , No ✓ Undetermined Is the soil a Histosol? Yes No --- Histic epipedon present? Yes No Is the soil: Mottle ? Yes —�� No Gleyed? -Yes .� N Matrix Color. Mottle Colors: �� Other hydr'►c soil indicators: Is the hydr'rc soil criterion met? Yes y No Rational: _ HYDROLOGY v v v Is the ground surface inundated? Yes _� No Surface water depth: -1 42 wd , Is the soil saturated? Yes c/ No ., Depth to free - standing water in pit/soil probe hole: l List Oar field evidence of surface inundation or soil saturation. Is the wetland)hydrol4y criterion rVet? Yes _sue No Rationale;, JURISDICTIONAL DETERMINATIOMAND RATIONALE Is the plant community a wetland? Yes �� No Rationale for- krGisdictional decision: .0 n P, L r ' NATIVE GRASS AND WILDFLOWER SEED MIX AND APPLICATION RATES The Legends of Stillwater ' Stillwater, Minnesota NOTES 1. WITHIN 72 HOURS AFTER COMPLETION OF FINAL GRADING, THE NATIVE ' MIX SHALL BE SEEDED ON DISTURBED SOILS ABOVE WATER LEVELS AROUND STORMWATER PONDS AND WETLANDS BELOW THE LIMITS OF WETLAND BUFFER ZONES. SEEDED AREAS SHALL BE MULCHED WITH TYPE I MULCH AT A RATE OF 2 TONS PER ACRE AND THE MULCH SHALL BE DISC- ANCHORED. TREE AND SHRUB PLANTING BEDS MAY BE LEFT UNSEEDED. ' 2. NATIVE GRASS AND WILDFLOWER SEED MATERIALS SHALL BE ACQUIRED AND INSTALLED IN ACCORDANCE WITH THE SEEDING MANUAL FOR NATIVE SEED MIXES - MINNESOTA DEPARTMENT OF TRANSPORTATION 1995196 (MINNESOTA DEPARTMENT OF TRANSPORTATION TURF ESTABLISHMENT AND EROSION PREVENTION UNIT, 1995) AND THE STANDARD SPECIFICATIONS FOR CONSTRUCTION, 1995 EDITION (MINNESOTA 1 DEPARTMENT OF TRANSPORTATION, 1995). 3. THE SEED MIX AND APPLICATION RATES SHALL BE AS SPECIFIED BELOW. Prepared by: W Westwood Professional Services, Inc. February, 1998 I 4. SPECIES MARKED BY AN ASTERISK (-) ARE NATIVE LEGUMES AND SHALL ' BE PRE - INOCULATED WITH THE PROPER BACTERIAL CULTURE. RATE TABLE COMMON NAME BOTANICAL NAME APPLICATION RATE 1 Grasses Pounds Pure Live Seed /Acre Big bluestem Andropogon gerardi 5.0 Canada wildrye Elymus canadensis 3.0 Indiangrass Sorghastrum nutans 5.0 Little bluestem Schizachyrium scoparium 4.0 Switchgrass Panicum virgatum 2.0 Wildflowers Ounces Bulk Seed /Acre New England aster Aster novae - angliae 4.0 Showy tick - trefoil' Joe pye weed Desmodium canadense Eupatorium maculatum 3.0 3.0 Ox -eye sunflower Heliopsis pycnostachya 4.0 Prairie biazingstar Liatris pycnostachya 5.0 Wild bergamot Monarda fistulosa 4.0 Purple prairie clover* Petalostemum purpureum 3.0 Yellow coneflower Ratibla pinnata 5.0 Black -eyed Susan Rudbeckia hirta 6.0 Blue vervain Verbena hastata 4.0 Golden Alexander Zizia aptera 3.0 ' Nurse o Pounds Bulk Seed /Acre Oats 40.0 Prepared by: W Westwood Professional Services, Inc. February, 1998 I FORM A DECLARATION OF RESTRICTIONS AND COVENANTS FOR REPLACEMENT WETLAND for The Legends of Stillwater, Stillwater, Minnesota THIS Declaration of Restrictions and Covenants for Replacement Wetland ( "Declaration ") is made this day of , by the undersigned, hereinafter referred to collectively as the "Declarant." WITNESSETH: WHEREAS, Declarant is the fee owner of property containing a wetland (as defined in Minn. Rules part 8420.0110, subp. 52) that will be created or restored (hereinafter, "Replacement Wetland ") and Declarant is also any other party defined as a Landowner under Minn. Rules part 8420.00 10, subp. 29 who is seeking approval of (1) a replacement plan pursuant to Minn. Stat. § 103G.222 and Minn. Rules part 8420.0530 or (2) a bank plan pursuant to Minn. Rules part 8420.0740; and WHEREAS, the Replacement Wetland is located on the following described property, as shown on Exhibit A attached hereto and incorporated herein, to -wit: Unplatted nro eegy within the NW and SW 1/4 of Section 31, Township 30 North Range 20 West, City of Stillwater. Washington Coun1y. Minnesota; and WHEREAS, the Replacement Wetland is subject to the Wetland Conservation Act of 1991, Minn. Stat. § 103G.222 et sea., and all other provisions of law that apply to wetlands, except that the exemptions in Minn. Stat. § 103G.2241 do not apply to the Replacement Wetland, pursuant to Minn. Stat. § 103G.222 (h) and Minnesota Rules part 8420.0115.; and WHEREAS, the Local Government Unit ( "LGU ") charged with approval of the Replacement Plan is the City of Stillwater, which address is 216 No. 4' Street, Stillwater, MN 55082; and WHEREAS, the LGU is hereby authorized to release from this Declaration any land contained in the above - described legal description if the LGU subsequently determines that non - wetland areas have been encumbered by this Declaration. NOW, THEREFORE, Declarant makes the following declaration as to restrictions and covenants for the Replacement Wetland. The restrictions and covenants described below shall run with the land and shall be binding on the Declarant, his heirs, successors and assigns: 1. The Declarant is responsible for maintaining the size and type of the Replacement Wetland, as specified in the replacement plan or bank plan approved by the LGU and on file at the office of the LGU. 2. The Declarant is responsible for the costs of maintenance, repairs, reconstruction, and replacement of the Replacement Wetland which the LGU or Board of Water and Soil Resources may deem necessary to comply with the specifications for the Replacement Wetland in the approved replacement plan or bank plan. Declaration of Restrictions and Covenants For Replacement Wetland for The Legends of Stillwater, Stillwater, Minnesota Form A Page 2 3. The Declarant shall grant the proper authorities reasonable access to the Replacement Wetland for inspection, monitoring, and enforcement purposes. Further, Declarant shall be responsible for having a title search performed to determine any other parties who may have an interest in the land on which the Replacement Wetland will be located. Declarant acknowledges that he has obtained the consent of all such parties (e.g., mortgagees, contract for deed vendors of vendees, holders of easements, licenses, liens, etc.) and that the necessary consents are attached hereto. Further, Declarant shall record this Declaration and provide proof thereof to the LGU before proceeding with construction of the Replacement Wetland. Declarant shall be responsible for the costs of document recording. IN WITNESS WHEREOF, the Declarant has set his hands. DECLARANT (fee owner) (s) ACKNOWLEDGMENT OF DECLARANT (fee owner) (s) STATE OF MINNESOTA ) ) ss. COUNTY OF ) The foregoing instrument was acknowledged before me this day of by Notary Public Notary Stamp or Seal Declaration of Restrictions and Covenants For Replacement Wetland for The Legends of Stillwater, Stillwater, Minnesota Form A Page 3 DECLARANT (if other than fee owner) ACKNOWLEDGMENT OF DECLARANT (if other than fee owner) STATE OF MINNESOTA ) ) ss. COUNTY OF ) The foregoing instrument was acknowledged before me this by Notary Stamp or Seal This instrument was drafted by: Jennifer K. Park Assistant Attorney General Suite 200, 520 Lafayette Rd. St. Paul, MN 55155 Notary Public day of C:IMY DOCUMENTSIWETLANDSIWET PERMIT APPLITHE LEGENDSILEGENDSRESTRICT DOC [ _JI MEMORANDUM ■ ST. PAUL, MN ❑ MINNEAPOLIS, MN ❑ ST. CLOUD, MN ❑ CHIPPEWA FALLS, Wl ❑ MADISON, WI ❑ LAKE COUNTY, IN ' TO: Steve Russell Community Development Director City of Stillwater ' FROM: Glen Van Wormer ' DATE: January 27, 1998 RE: Stillwater, Minnesota ' ation Areas ends and Lie ments SEH No. - The Planning Commission meeting on January 26 began to culminate a number of transportation ' issues which have been related to the annexation area. Some have been studied relative to the Comprehensive Plan, annexation studies and specific developments. Some go back even further. However, there are a number of issues which should be resolved in more detail as the two ' developments proceed through the approval process and into the building stages. We should begin to pull these loose ends together in some type of a schedule and approval mode so that they don't get overlooked or we end up not resolving something as well as possible. The following is a list of ' those items which we are aware of and some comments on each. 62nd Street With each development in the southwest corner of Stillwater, the 62nd Street residents expressed concern over through traffic. They experienced a very high volume of traffic during the County Road 5 bridge reconstruction at Highway 36. The concepts that have been put forth for a number of years include a cul -de -sac and frontage road development. The frontage road will connect Curvecrest Boulevard and County Road 5, loop along County Road 5 and Highway 36 and finally ' connect to existing 62nd Street just east of Manning Avenue. The existing 62nd Street can be disconnected on either the east end or the west end with a cul -de -sac. Past studies and discussions between the Township and residents led to the west end as being the most preferred. ' To make the connection now would require development of a cul -de -sac on the west'end and a connection to either the frontage road or a temporary continuation of the existing connection to County Road 5. An option still remains to cul -de -sac the east end and retain the connection to the west. Steve Russell ' January 27, 1998 Page 2 The development of the Legends subdivision will require some attention be paid to 62nd Street or they will develop traffic on it. The development of the Bradshaw property and the connection of the 1 frontage road to Curvecrest Boulevard will also impact the timing of the 62nd Street changes. We should look at scheduling some type of a meeting with the 62nd Street residents to permanently , approve some concept. We then need to work a schedule so that traffic problems are not allowed to develop. , 72nd Street The traffic concerns for 72nd Street go back many years. It is a gravel road which allegedly is not even platted or on public property. Traffic problems exist with the hill on Interlachen Boulevard to , the east and with the narrow curving alignment along the north side of the lake. There are a number of concerns and considerations. The Liberty development has preempted 72nd , as any type of a through street, which is good. Major utilization is the connection between the Legends and Croixdale neighborhoods and between the Rutherford School and the Croixwood , neighborhood. Mr. McKenzie has requested vacation of the street while others have indicated desirability of keeping it as a connection. The DNR has some concerns over the impact of the road on the natural flow of drainage and this , needs to be considered. The utilization of it as a road has advantages as it does connect neighborhoods and the schools. Removal of it will force traffic onto County Road 12 to access ' adjacent neighborhoods or the school. However, maintaining the road will require some improvements, consideration for pedestrians, potential paving or continued maintenance of gravel road, and improvements to the curves and hills. ' We should convene a meeting of the three residents not involved in the development, the Liberty , developers, the school district, Washington County and possibly the DNR to consider the advantages and disadvantages of continuing it or vacating it. With the opening of the school next year, it appears that some pedestrian traffic will begin to use the road as a connection to the school playground area. This may force us to develop some overall plans in the future. County Road 12 Access The Legends developer has continually requested a right in/ right out access to County Road 12 approximately 600 feet east of Manning Avenue. The Washington County staff has opposed this. To date, the City has remained neutral citing some advantages and disadvantages attempting to not , take a position. City staff needs to help the City Council make a final determination of support, non- support, or no position. In addition, the City could suggest street changes to make the commercial area more viable given a lack of access at the requested 600 feet east of Manning Avenue. ' ' Steve Russell January 27, 1998 Page 3 Street Systems Within the Development ' The City has apparently approved the concept of narrower streets with some reservations. The City is concerned about maintenance of the streets, snow storage, separation distances between pedestrians and automobile traffic and other concerns. We have also expressed concern over some of the design details including cul -de -sac widths, turning radii and others. The developers have acknowledged some concerns and possibly ignored or not gotten around to taking care of others. 0 �l L J We should, prior to file plat approval, and continued development, resolve some of the issues in more detail. The City staff and SEH have been a little bit fragmented in communication with the developer. We should as a staff and consultant reach an agreement on what is needed and convey this to the developer and obtain the best possible plat. In addition, we need to consider the installation of no parking provisions either as part of the initial development or as part of a future installation. Finally the Round -about design needs to be finalized. We have tried to be supportive of the narrow street concepts, recognizing sidewalk, off -street parking and low traffic volumes may make this possible. However, we need to be very careful that we are not constructing some type of problem. We do not want to get to a point where preliminary approval of the subdivision will begin to drive the details of design. We would very much like to continue to help the City in resolving these traffic issues. We have a considerable amount of background information and can probably assist in early development and acceptance of solutions. Would you kindly advise us of how we can continue to be of assistance. sah c: Klayton Eckles, City Engineer Dave Hahn, SEH F:\PROJECTS\RWULL\980MRUSSELL.j27 Westwood Professional Services, Inc. WETLAND PERMITS APPLICATION THE LEGENDS OF STILLWATER Stillwater, Minnesota February 1998 PERMITS REQUESTED 7599 Anagram Drive Eden Prairie, MN 55344 Phone: 612- 937 -5150 Fax: 612 - 937 -5822 Toll Free: 1- 888 - 937 -5150 Email: wps@westwoodps.com • Wetland Conservation Act Certification of Wetland Replacement from the City of Stillwater • Confirmation of § 404 Nationwide Permit 26 Coverage from the U.S. Army Corps of Engineers CONTENTS • Local- State - Federal Project Notification Form • Minnesota Wetland Conservation Act Wetland Replacement Plan Application • Narrative • Exhibits and Attachments LIST OF EXHIBITS 1. USGS Topography and Site Location 2. Topography and Wetland Boundaries 3. Site Plan (Preliminary Plat) 4. Preliminary Grading Plan 5. Wetland Replacement Plan 6. Digital Orthophotography and National Wetlands Inventory Mapping 7. Soil Survey Mapping (Soil Survey of Washington County, Minnesota) LIST OF ATTACHMENTS 1. Wetland Delineation Report by Arlig Environmental 2. Seed Mix and Application Rate Chart 3. Declaration of Restrictions and Covenants for Replacement Wetland (Draft) 4. ALTA Title Commitment (Evidence of Property Rights) - forthcoming APPLICANT The Pemtom Land Company Mr. Dan Herbst 7597 Anagram Drive Eden Prairie, MN 55344 Phone: (612) 937 -0716 Fax (612) 937 -8635 AGENT Westwood Professional Services, Inc. Mr. Ken Powell 7599 Anagram Drive Eden Prairie, MN 55344 Phone: (612) 937 -5150 Fax: (612) 937 -5822 Designing the Future Today ... since 1972 ' ILOCAL—STATE—FEDERAL WATER Use this form to notify /apply the Minnesota Department of Natural Resources, the Army Corps of Engineers, and your Local Government Unit of a Ioposed water /wetland project or work which may fall within their jurisdiction. These agencies should advise you of their jurisdiction or permit qulrements within 45 days. Some LGUs may require submission of their own application forms. This form is provided as a convenience and its use is tional. You may, if you wish, apply for permits or authorizations using standard agency forms. Fill out this form completely and mail a copy, with plans, maps, etc. to each of the agencies listed on the reverse of the form. Keep a copy for your records. YOU MUST OBTAIN ALL REQUIRED 1[UTHORIZATIONS BEFORE BEGINNING WORK, V LGU NUMBER: MDNR NUMBER: CORPS NUMBER: nJ+}Jucau s name krlrst, Last, M.I.) / Authorized Agent, if any he Pemtom Land Company, Attn: Mr. Dan Herbst / Westwood Professional S Address (Street, RFD, Box Number, City, State, Zip Code) 17597 Anagram Drive, Eden Prairie, MIN 55344 / 7599 / Area Code, Telephone Inc. Attn: Mr. Ken Powell / (612) 937 -5150 Eden Prairie, NIN 55344 LOCATION OF PROPOSED PROJECT (ATTACH DRAWING SHOWING HOW TO GET TO county Quarter Section(s) Section(s) No. Township (s) Range (s) No. Lot, Block, Subdivision Washington W 1/2 of Section 31 T30N, R20W re No., Box No., or Project Name of Waterbody Affected and Number. (if known): Unnamed wetlands Ill. is I IMATLD PROJECT COST: S LENGTH OF SHORE AFFECTED (in feet): N/A St. VOLUME OF FILL OR EXCAVATION cubic yds.): (NOTE: You may substitute dimensions) AREA FILLED OR EXCAVATED IS 1,240 square feet of fill and 1,860 square feet of drainage TYPE OF WORK AND AREA (Check all that apply): — ACCESS PATH BRIDGE CULVERT DAM CONSTRUCT DRAIN X EXCAVATE DOCK RIPRAP SAND BLANKET X FILL REMOVE REPAIR LAKE SHORELINE WATERWAY 0 WETLAND OTHER (DESCRIBE): drainage 'ETLAND TYPES (S) AND ACREAGE (S) PROPOSED TO BE FILLED /DRAINED: 2 (PEMB). 3.100 sq. ft. ttach drawings and plans. Include a description of any proposed compensatory mitigation. Important: Identify any disposal and borrow areas. Describe the work below; how it would be done, what equipment would be used: iee attached narrative -71. PROJECT PURPOSE (why is this project needed - -what benefits will it provide ?): See attached narrative 0 II. ALTERNATIVES (describe any other sites or methods that could be used to achieve the purpose of your project while avoiding or minimizing wetland/water impacts: Attach additional sheets, if needed). fee attached narrative L►A I ts: Proposed start of activity: Spring 1998 Proposed completion: Depends on Market Conditions (identify any completed work on drawing). ADJOINING PROPERTY OWNERS (Attach list if more than two). Name Address City State Zip 1._ N/A x. PtxMITS have been received (enter an R), already applied for (enter an A), or will be applied for (enter a W) from: DNR A ARMY CORPS COUNTY A TOWN /CITY WATERSHED DISTRICT A MN POLLUTION CONTROL AGENCY las an archaeological survey of the project site been done? No If so, by whom: y notify the recipients of that I must gbfa?p. I and local administrlik, ci n of the project proposed herein and request that I be advised of any permits or other determinations concerning this that proceeding with work before all required authorizations are obtained may subject me to Federal, State, and/or it penalties. DATE:—J?-/C Q Project or Agent « « <PLEASE CAREFULLY READ AND COMPLETE BACK OF FORM » »> INSTRUCTIONS - PLEASE READ CAREFULLY , A copy of this form, with copies of all plans, drawings, etc., should be sent to each agency indicated below. Please check the appropriate spaces below to show everywhere you are sending this form. Remember to keep a copy for your records. _X LOCAL GOVERNMENT UNIT (LGU): City, county, or watershed management organization. ' Specify the LGU to which you are sending the form: City of Stillwater The local SOIL AND WATER CONSERVATION DISTRICT (SWCD) for the project. ' Specify the county SWCD`. Washington County Soil and Water Conservation District — WATERSHED DISTRICT (if one exists for the project area). ' Specify the Watershed District: Brown's Creek WMO MINNESOTA DEPARTMENT OF NATURAL RESOURCES Regional Office. X_ U.S. ARMY CORPS OF ENGINEERS (ACOE). Send the ACOE copy to: ' Department of the Army, Corps of Engineers, St. Paul District, ATTN.: CO -R, 190 5th Street East, St. Paul, MN 55101 -1479 ' Note: The above agencies may provide a copy of your completed form to the Minnesota Pollution Control Agency (MPCA). MPCA water quality rules may apply to your proposal. ATTENTION! FROM USDA: Any activity including drainage, dredging, filling, leveling or other manipulations, including maintenance, may ' affect a landuser's eligibility for USDA benefits under the 1985 Food Security Act as amended. Check with your local USDA office to request and complete Form AD -1026 prior to initiating activity. IMPORTANT: Some of the above offices may allow this form to be used as a permit application form. The Corps of Engineers will accept this form as al application form. If you wish this form to constitute an application to the Corps of Engineers for any necessary permits for your project under Section 10 of the Rivers and Harbors Act of 1899, and/or under Section 404 of the Clean Water Act, please carefully read the following information and sign where ' indicated below. Application is hereby made for a permit or permits to authorize the activities described herein. I certify that I am familiar with the information contained in, this application, and that to the best of my knowledge and belief such information is true, complete, and accurate. I further certify that I possess the authority to undertake the proposed activities or I am acting as the duly authorized agent of the applicant. Signature of Applicant Date Signature of Agent Date NOTE: The application must be signed by the person who desires to undertake the proposed activity (applicant) or it may be signed by a duly authorized I agent if the information requested below is provided. Agent's Name: Ken Powell Agent's Title: Environmental Scientist I Agent's Address: Westwood Professional Services. Inc.. 7599 Anagram Drive Eden Prairie. Minnesota 55344 ' Agent's Telephone: (612) 937 -5150 Agent's Email: op wellkOwestwoodps.com 18 U.S.C. Section 1001 provides that: Whoever, in any manner within the jurisdiction of any department or agency of The United States knowingly and ' willfully falsifies, conceals, or covers up by any trick, scheme, or device a material fact or makes any false, fictitious, or fraudulent statements or representations or makes or uses any false writing or document knowing same to contain any false, fictitious, or fraudulent statement or entry, shall be fined, not more than $10,000 or imprisoned not more than five years, or both. SEE ATTACHMENT ABOUT MDNR PERMIT FEES 1 ' Minnesota Wetland Conservation Act Wetland Replacement Plan Application l! 1 C G n Project Name: Applicant Information Name: Company: Address: Phone: Fax: Authorized Agent(s) Name: Company: Address: Phone: Fax: Local Government Unit Name: Company: Address: Phone: The Legends of Stillwater Mr. Dan Herbst The Pemtom Land Company 7597 Anagram Drive Eden Prairie, MN 55344 (612) 937 -0716 (612) 937 -8635 Mr. Ken Powell Westwood Professional Services, Inc. 7599 Anagram Drive, Eden Prairie, MN 55344 (612) 937 -5150 (612) 937 -5822 Mr. Klayton Eckles City of Stillwater 216 No. 41 St Stillwater, MN 55082 (612) 439 -6121 Complete the following for the Impacted Wetland(s): 1. Description of Project (describe the nature and purpose of the proposed project): See attached narrative 2. Location of impacted Wetland(s) County: Washington City: Stillwater Quarter Section: NW Section 31 Twp. 30 N Range 20 W Watershed: #37 St. Croix River (Stillwater) 3. Size of wetland impact(s): See Table Below 4. Size of entire wetiand(s): See Table Below 5. Wetland Type(s): See Table Below 6. List the dominant vegetation in the impacted wetland area(s): See Table Below 7. Estimated size of surface water drainage into the impacted wetland: See Table Below 8. Topographic setting Shorelands Floodplain Tributary Riverine Flowthrough Isolated X ' W Westwood Professional Services, Inc. (612) 937 -5150 Proposed Fill Basin Size on Wetland Onsite Drainage Basin & Drainage property Type Dominant Vegetation Area (Square Feet) (Square Feet) 5 3,100 3,100 2 reed canary grass + 2 acres 8. Topographic setting Shorelands Floodplain Tributary Riverine Flowthrough Isolated X ' W Westwood Professional Services, Inc. (612) 937 -5150 Wetland Replacement Plan Application pp n Page 2 of 4 If the wetland is within a shoreland wetland rotection zone or the flo following: p odplain of a watercourse, list the Distance to waterbody or watercourse (feet): 600 DNR designation: 82 -21P ' Classification of the waterbody or watercourse: Recreational Development Ordinary High Water level (if applicable): 891.5 9. Land use description (describe the predominant land use(s) within the immediate watershed of the wetland, ' or attach a map or photograph) See attached narrative ' 10 List all other applicable local, state, and federal permits and approvals: I Unit of Government Type of Application City of Stillwater Preliminary and Final Plat City of Stillwater Certification of Wetland Replacement U.S. Army Corps of Engineers Section 404 Nationwide 26 Permit MN Pollution Control Agency NPDES Permit City of Stillwater Grading Permit 11. Attach the following: ' a. A recent aerial photograph or accurate map of the impacted wetland area showing: 1. the location and extent of the proposed wetland fill or drainage 2. the location of any surface inlets or outlets draining into or out of the wetland 3. the land use within the immediate watershed, unless described in item 9 b. A soils map of the site C. Evidence of ownership or rights to the affected areas (See attached ALTA Title Commitment) ' d. Any other information required by the LGU Complete the following information for the Replacement Wetland Site(s): ' Will replacement be accomplished via wetland banking? Yes I-o Both (If YES, complete only items 2, 3, 4, and 8c) 1. Timetable: project will begin in Spring 1998 and be completed in phases depending on market conditions. 2. Location of replacement Wetland(s) ' County: Washington City: Stillwater Quarter Section: NW Section 31 Twp. 30 N Range 20 W ' Watershed: #37 St. Croix River (Stillwater) 3. Size of replacement wetland or withdrawn banking credits: ' Credit Type Square Feet Acres New Wetland Credit 3,185 0.07 Public Value Credit - ponding 71,727 1.65 (95,636 SF ponding x 0.75 = 71,727 SF) ' Total Wetland Replacement 74,912 1.72 NOTE: The project requires 5,400 SF of wetland replacement (3,100 sf - 400sf x 2 = 5,400 so, up to half of which may be Public Value Credit (PVC). The Wetland Replacement Plan provides 74,912 SF of wetland • Westwood Professional Services, Inc. (612) 937 -5150 Wetland Replacement Plan Application Page 3 of 4 replacement. There will be 485 SF (0.01 acres) of surplus New Wetland Credit (NWC) and 69,512 SF (1.60 acres) of surplus Public Value Credit. 4. Type(s) of wetland replacement or withdrawn banking credits: See Table Below 5. Estimated size of surface water drainage into the wetland: See Table Below Wetland Creation (square feet) Wetland Type Drainage Area 3,185 3 + 2 acres NOTE: Most of the created wetland's hydrology will be supplied by overflow from the stormwater pond to the west. 6. Topographic setting (enter Replacement Area ID(s)): Shorelands Floodplain Tributary Riverine Flowthrough X Isolated u u II If the wetland is within a shoreland wetland protection zone or the floodplain of a watercourse, list the I following: Distance to waterbody or watercourse (feet): DNR designation: Classification of the waterbody or watercourse: Ordinary High Water level (if applicable): 600 82 -21 P Recreational Development 891.5 7. Describe how the replacement wetland shall be constructed, for example, excavation or restoration by blocking an existing tile, the type, size and specifications of outlet structures; elevations, relative to Mean Sea Level or established bench marks, of key features, for example, sill, emergency overflow, and structure height, and best management practices that will be implemented to prevent erosion or site degradation: See attached narrative. 8. Attach the following: a. A recent aerial photograph or accurate map of the replacement site showing: 1. the location of the replacement wetland 2. the location of any surface inlets or outlets draining into or out of the wetland b. Scale drawings of the replacement wetland showing plan and profile views and fixed photo reference points for the monitoring process C. Evidence of ownership or rights to the affected areas (See attached ALTA Title Commitment) d. A soils map of the site. If the replacement wetland is a created wetland, include additional soils information sufficient to determine the capability of the site to produce and maintain wetland characteristics. e. A monitoring plan. f. For replacement wetlands located on pipeline easements, evidence that the easement holder and the Office of Pipeline Safety has been contacted. g. Proof of replacement wetland recording notice. d. Any other information required by the LGU Westwood Professional Services, Inc. (612) 937 -5150 Wetland Replacement Plan Application Page 4 of 4 Special Considerations To the best of the applicant's knowledge, are any of the following factors applicable at the impact or replacement ' site? Note whether present or not by indicating as follows; Impact Site (1), Replacement site (R), Both (B), Neither (N). ' 1. Federal or state - listed endangered species ............. ............................... N 2. Rare natural communities ......................................... ............................... N 3. Special fish and wildlife resources including ............. ............................... N ' a. fish passage and spawning areas ................. ............................... N b. colonial waterbird nesting colonies ................ ............................... N C. migratory waterfowl concentration areas ....... ............................... N d. deer wintering areas ....................................... ............................... N e. wildlife travel corridors .................................... ............................... N 4. Archaeological or historic sites ................................. ............................... N 5. Ground water sensitive areas ................................... ............................... N ' 6. Sensitive surface waters (e.g. DNR designated trout waters) ................ N 7. Educational or research sites .................................... ............................... N 8. Waste disposal sites ................................................. ............................... N 9. Is the project consistent with local plans? ................. ............................... B ' (e.g. watershed plans, land use plans, zoning and master plans) Replacement Assurance and Sworn Statements Mr. Dan Herbst for The Pemtom Land Company (Applicant) states by signature below that: 1. The wetland will be replaced before or concurrent with the actual draining or filling of a wetland OR; an irrevocable bank letter of credit or other security acceptable to the local government unit has been provided to guarantee the successful completion of the wetland value replacement; AND, 2. The replacement wetland was not previously restored or created under a prior approved replacement plan; AND, 3. The replacement wetland was not drained or filled under an exemption during the previous ten years; AND, 4. The replacement wetland was not restored with financial assistance from public conservation programs, unless the replacement wetland qualifies under Minn. Rules Chapter 8420.0540, Subp.2.1).(3) [check here if applicable_; AND, 5. The replacement wetland was not restored using private funds other than those of the landowner unless the funds are paid back with interest to the individual or organization that funded the restoration and the individual or organization notifies the local government unit in writing that the restored wetland may be considered for replacement [check here if applicableaj. hereby affirm that the info tion a ve is correct and truthful to the best of my knowledge. ' Applicifit signature: . (M an Herbst) (date) for TH6 Pemtom Land Company Witness: ' LGU Official signature: (Mr. Klayton Eckles) (date) `�� Westwood Professional Services, Inc. (612) 937 -5150 0 0 �7 WETLAND PERMITS APPLICATION NARRATIVE THE LEGENDS OF STILLWATER, STILLWATER, MINNESOTA February, 1998 TABLE OF CONTENTS Page PROJECT PURPOSE, DESCRIPTION, AND WETLAND IMPACTS .......:.:.... ............................... 1 WETLANDOVERVIEW .................................................................................... ..............................1 Wetland Delineation Methodology ............................................................ ............................... 1 WetlandDelineation Results ..................................................................... ............................... 2 REGULATORYFRAMEWORK ....................................................................... ............................... 2 Minnesota Wetland Conservation Act, as amended ................................ ............................... 2 Section 404 of the Federal Clean Water Act ............................................. ............................... 2 SEQUENCING................................................................................................ ............................... 2 AlternativesConsidered ............................................................................ ............................... 2 Wetland Avoidance and Impact Minimization ....................:..................... ............................... 3 ImpactRectification ................................................................................... ............................... 3 Impact Reduction and Elimination Over Time ......................................... ............................... 3 Requestfor Sequencing Flexibility ........................................................... ............................... 4 WETLANDREPLACEMENT ........................................................................... ............................... 5 WetlandReplacement Required ................................................................ ............................... 5 Wetland Replacement Proposed ............................................................... ............................... 5 Wetland Replacement Monitoring ............................................................. .............::l............... 6 ® Westwood Professional Services, Inc. January, 1998 Westwood Professional Services, Inc. considers the information contained in this document and any attachments to be proprietary. This document and any information contained or referenced herein shall not be disclosed, duplicated, our used in whole or in part for any purpose other than processing the permit applications referred to herein without written permission from Westwood and the Applicant. I Westwood Professional Services, Inc. (612) 937 -5150 WETLAND PERMITS APPLICATION NARRATIVE THE LEGENDS OF STILLWATER, STILLWATER, MINNESOTA February, 1998 PROJECT PURPOSE, DESCRIPTION, AND WETLAND IMPACTS The Legends of Stillwater is a residential housing project involving the development of 74.77 acres of farmland and deciduous woodland along the western shore of Long Lake into 155 single - family residential lots to meet the demand for residential housing in the Twin Cities suburbs. The site is located in the W % of Section 31, T 30 N, R 20 W, City of Stillwater, Washington County, Minnesota (Exhibit 1). The property is bordered on the east by Long Lake, on the south by 62" Street, and on the north and west by farmland and deciduous woodland. Access to the site is proposed from 62 °d Street along the southern border of the site via Reunion Road from the proposed development to the north, and three potential future accesses from the property to the west if and when it is developed in the future. The project site contains seven wetlands that encompass a total of 2.1 acres within parcel boundaries (Exhibit 2). The approved Preliminary Plat (Exhibits 3) entails 1,240 square feet of wetland fill and 1,860 square feet of anticipated wetland drainage (see Exhibit 4). The applicant proposes to meet and exceed replacement requirements by creating 3,185 square feet of new wetland adjacent to a 0.8 -acre wetland. Allowable Public Value Credit for stormwater ponding on the site is 71,727 square feet (1.6 acres). There are two proposed stormwater ponds encompassing a total of 95,636 square feet (2.2 acres) within their respective normal water level elevation contours (Exhibit 4). The WCA allows Public Value Credit up to a maximum of 75 percent of this pond area. The overall wetland replacement exceeds WCA statutory requirements by including 1:1 wetland creation for the fill and drainage exceeding the diminimis (3,100 sf - 400 sf = 2,700 sf) plus an additional 485 sf of wetland creation and 71,727 sf of Public;Value Credit from stormwater ponding. Wetland replacement is not required under Section 404 of the CWA because the project involves less than 0.33 acres of alteration of an isolated wetland. WETLAND OVERVIEW Wetland Delineation Methodology Wetland boundaries were delineated and flagged in the field on April 22, 1995 by Arlig Environmental, Inc. using the Corps of Engineers Wetlands Delineation Manual (Environmental Laboratory, 1987). This manual is currently followed to delineate wetlands regulated under the Minnesota Wetland Conservation Act of 1991 and Section 404 of the Federal Clean Water Act. Delineated wetland boundaries were located using land surveying methods and are shown on Exhibit 2. Westwood Professional Services, Inc. (612) 937 -5150 n 0 0 0 I I ' The Legends g ds of Stillwater Page 2 ' Wetland Permits Application Narrative February 1998 Wetland Delineation Results ' The site contains seven wetlands encompassing a total of 2.1 acres within the parcel boundaries. Two wetlands were delineated in addition to the five identified on the National Wetlands Inventory Map. for ' the area. Based on the Arlig Environmental, Inc. delineation report, Wetland 5 (proposed to be filled and drained) ' is a Type 2 wetland dominated by reed canary grass. Wetland 7 (proposed to be expanded for wetland mitigation) is a Type 3 wetland with smartweed, reed canary grass, green bulrush, willow, and aspen as dominant plant species. tREGULATORY FRAMEWORK r 0 7 The proposed wetland alterations are regulated under: • The Minnesota Wetland Conservation Act of 1991, as amended (WCA), administered in this area by the City of Stillwater (City). • Section 404 of the Federal Clean Water Act (CWA), administered by the U.S. Army Corps of Engineers (Corps). Minnesota Wetland Conservation Act, as amended Under the WCA (Minnesota Wetland Conservation Act of 1991, as amended), submittal and approval of a Wetland Replacement Plan Application is required for the 1,240 square feet of wetland fill and 1,860 square feet of wetland drainage proposed. This amount of fill exceeds the 400 square -foot deminimis exemption for a Type 2 wetland in a shoreland area of a county with less than 50 percent of pre - settlement wetlands remaining. Section 404 of the Federal Clean Water Act Because the project involves 3,100 square feet of wetland alteration in an isolated wetland, the project is eligible for authorization under Nationwide Permit 26 and does not require a pre - construction' notification (PCN) in accordance with the Corps of Engineers "Notification" general condition. SEQUENCING The applicant recognizes that the WCA rules require sequencing for wetland avoidance, impact minimization, impact reduction and elimination over time, and replacement. The project has been designed to avoid wetland fill to the extent practicable given the development goals. Alternatives Considered Consideration was given to multiple design alternatives before the project proposer settled on the Proposed Alternative. The following alternatives were considered: 1. No Build Alternative 2. Alternative Site Plans 3. Proposed Site Plan (Preliminary Plat) WWestwood Professional Services, Inc. (612) 937 -5150 The Legends of Stillwater Page 3 Wetland Permits Application Narrative February 1998 No Build Alternative The No Build Alternative would totally avoid wetlands. However, the No Build Alternative is not considered practicable because it would not fulfill the applicant's purpose for the project and would not satisfy housing demands in the Stillwater area. Alternative Site Plans Alternative site plans with equivalent lake frontage in the immediate vicinity would likely involve similar wetland impacts. Alternative site plans were eliminated from consideration after several design refinements that led to development of the Proposed Site Plan (Exhibit 3) that was accepted by the City as the Preliminary Plat. Proposed Site Plan It was determined that the impacts to the immediate watershed of Wetland 5 would affect the hydrology of the wetland to the extent that it would degrade the already low quality of this small, isolated basin. Direct impacts to the remaining six wetlands have been avoided by the proposed site plan. The major emphasis of site planning has been preservation of the oak woodland located in the northeast portion of the site and along the lake shore. The oak woodland and the lake shore woodland are both considered to be more valuable natural amenities than Wetland 5. Wetland Avoidance and Impact Minimization The project has been designed to avoid and minimize wetland impacts to the extent practicable given the intended use of the property. The Proposed Site Plan represents the best available compromise between the project purpose, site constraints, wetland preservation, oak woodland preservation, and lake shore protection and preservation. The project design totally avoids six of the seven wetland basins that occur on the site, or about 97 percent of the total wetland area. Impact Rectification Because it will not be possible to restore the wetlands that will be filled, impact rectification is not feasible. Therefore, the applicant is proposing wetland replacement. Impact Reduction and Elimination Over Time Silt fence will be used to curtail soil erosion, minimize water quality impacts, and protect existing wetland functions and values during and after project construction. Silt fence will be installed at the proposed grading limits prior to the initiation of earthwork and will be maintained until viable ground cover is established on all exposed soils. Vegetative cover will be seeded on newly graded slopes within 72 hours after completion of final grading. Other Best Management Practices will also be considered to comply with the NPDES General Permit for construction activities, which is administered by the MPCA. Westwood Professional Services, Inc. (612) 937 -5150 J n n I I 7 0 ' The Legends of Stillwater Page 4 Wetland Permits Application Narrative February 1998 Request for Sequencing Flexibility ' Sequencing flexibility (Minnesota Rules 8420.05 10, Subpart 7a) is appropriate if. 1. the wetland to be impacted has been degraded to the point where replacement of it would result ' in a certain gain in function and public value; 2, preservation of a wetland would result in severe degradation of the wetland's ability to function and provide public values, for example, because of surrounding land uses and the wetland's ' ability to function and provide public values cannot reasonably be maintained through other land use controls or mechanisms; 3. the only feasible and prudent upland site available for wetland replacement or development has ' greater ecosystem function and public value than the wetland; 4. alternatives are demonstrably cost prohibitive; or 5. the wetland is a site where human health and safety is a factor. The applicant submits that Items 1 and 2 apply to the proposed wetland impact for The Legends of Stillwater Project. Sequencing flexibility should be considered because of the following reasons: 1. Due to the proposed surrounding land use (residential lawns and streets) and small wetland size (0.07 acres), preservation of the wetland to be filled and drained would result in degradation of 1 its ability to function and provide public values. Small, isolated wetlands that lack standing water tend to become dumping grounds for lawn wastes and other debris. This considerably compromises the wetland's ability to provide aesthetic value, wildlife habitat, water quality benefits, and other functions and values typically associated with wetlands in an urban setting. Even if the wetland were not filled, construction of nearby streets would redirect much of its tributary drainage area, causing it to become more dry and most likely leading to its conversion ' to residential lawn. Wetland replacement adjacent to a larger, contiguous wetland will result in a net gain in public value. 2. The biotic integrity of the wetland to be filled is degraded. It is dominated by reed canary grass, an invasive exotic species. ' The applicant also submits that preservation of the oak woodland (in the northeast corner of the site) and the lake shore should be the primary emphasis of site planning because both have greater ecosystem functions and values than Wetland 5. ' W Westwood Professional Services, Inc. (612) 937 -5150 The Legends of Stillwater Page 5 Wetland Permits Application Narrative February 1998 WETLAND REPLACEMENT Wetland Replacement Required ' Under the WCA, approximately 5,400 square feet of wetland replacement credit is required to ' compensate for the proposed wetland fill. The proposed wetland replacement calculations follow: 1,240 sq. ft. of fill ' + 1,860 sq. ft. of drainage - 400 sq. ft. deminimis exemption 2,700 sq. ft. , x2 (2:1 ratio) 5,400 sq. ft. of required replacement At least half of the replacement credit (2,700 square feet) will need to be in the form of New Wetland t Credit. Wetland Replacement Proposed ' The applicant proposes to meet and exceed replacement requirements by creating 3,185 sq. ft. of new wetland adjacent to Wetland 7 and constructing 95,636 sq. ft. of water quality treatment ponding in the ' southern portion of the property (Exhibits 4 and 5). The basin will be excavated to the grades shown on Exhibit 5, and hydrology will be maintained through ' the outlet control for Wetland 7. Due to the small size of the replacement wetland area, the wetland design cannot provide undulating bottom contours and irregular edges. However, the replacement wetland will provide these characteristics for the overall area of Wetland 7. The Wetland Replacement Plan (Exhibit 5) is based on an assumed Normal Water Level and wetland boundary elevation of 926 after construction. Topsoil excavated during stormwater pond construction on the development site will be spread in the basin bottom at a depth of 6 to 12 inches to produce the finished grade and provide a ' fertile substrate for vegetation establishment. To minimize erosion hazards and encourage sloe stabilization, regraded surfaces will be seeded as soon as practical and no later than 72 hours after completion of grading. Wet meadow and wetland fringe areas will be seeded with a wet prairie seed mix ' similar to that shown on Attachment 2. Best management practices will be established and maintained adjacent to the perimeter of the wetland. ' Appropriate vegetative cover will be established on all adjoining slopes. Allowable Public Value Credit for stormwater ponding on the site is 71,727 square feet (1.6 acres). ' There are two proposed stormwater ponds encompassing a total of 95,636 square feet (2.2 acres) within their respective normal water level elevation contours. The WCA allows Public Value Credit up to a maximum of 75 percent of this pond area. ' The overall wetland replacement exceeds WCA statutory requirements. The replacement plan includes 1:1 wetland creation for the fill and drainage exceeding the diminimi.s (3,100 sf - 400 sf = 2,700 sf) plus an ' additional 585 sf of wetland creation. In addition, 71,727 sf of Public Value Credit from stormwater ponding will be provided. Westwood Professional Services, Inc. (612) 937 -5150 ' The Legends of Stillwater Page 6 Wetland Permits Application Narrative February 1998 Wetland Replacement Monitoring ' The wetland creation area will be monitored in compliance with the Wetland Conservation Act. Monitoring will include the following required components, as listed in the WCA rules: ' 1. A description of the project location, size, current wetland type (Cowardin classification), and desired wetland type (goal). ' 2. A comparison of the as- built conditions in relation to the design specifications (first annual monitoring only) and a rationale for significant changes. ' 3. Seasonal water level elevations measured during the period April through October (msl or referenced to a known bench mark). ' 4. A list of the dominant vegetation in the wetland, including common names of the vegetation exceeding 20 percent coverage and an estimate of coverage; for example, 50 percent willow, 20 percent cattail, and 30 percent sedge. ' 5. Color photographs of the project area taken during the period June through August, referenced to the fixed photo- reference points identified on the Wetland Replacement Plan and labeled accordingly. ' The replacement wetland will be monitored for a maximum of five years after creation and monitoring reports will be submitted to the City of Stillwater each year. The replacement wetland will be examined three times between April and October each year and the depth of standing water or depth to free water in an unlined bore hole will be measured from the wetland hydrology monitoring points shown on the Wetland Replacement Plan. Color photographs of the vegetation within the wetland creation areas will ' be taken during each growing season from the photo- reference points shown on the Wetland Replacement Plan. Hydrology measurements will be evaluated to assess the viability of the wetland in relation to the creation/restoration goal. The percent coverage of dominant vegetation will be estimated visually and photos will be taken from the fixed photo- reference points shown on the Wetland Replacement Plan and submitted to the City along with the monitoring report. All monitoring reports will include a description of the condition and composition of the vegetation within the wetland replacement area. When it can be shown that the mitigation is successful, the application will request that the remainder of the monitoring requirement be waived. 1 0 WWestwood Professional Services, Inc. (612) 937 -5150 Q erf rd �� � (� .. • jam_ ._= � _�� �t _ f�p-_ ,�'�'S "r be Ir, TL • I `1 v- _ __ a • ..___•__i,: _ t. __ _. _..:- _ _.__�o °a =_a' =. —:r�__ f ___• _. .._.- %��jj- c 1'/VI ' ° 1 �' �•i� 'r2S' Cyr �j � 1 - -�.__ _._I'. \ 1 • F . ;s �. ° t. ? O � � 111 6 � •� `� -` 01 5 ° Still er -- �0 . Project r i Site; .: sCht. .- - 5 11�- -j- rte, �, ��� © J �•�, - _ _ La • •�� f �i Oj '4 na. r [ . r— i 9 V i1� I,e } sows uses�.5 ouaaranye(tss�rNYNDOT (,s9� N 2000 0 2000 Feet The Legends Stillwater W + E of Westwood Professional Services, Inc. 7599 Anagram Dive Wetland Perm W its Application Eden Praide, NN 55344 USGS Topography and Site Location F' ,199% EXHIBIT 1 , it, r Wetland 1 Wetland 2 ' ; 1 • , Wetland 3 Wetland 4 Wetland`, Wetland 6 T �r• ' `, Long Lake ' Wetland 7 r 1 ' L ' –�,\ -• ! , ~� • — fir- .c ✓... _ _ Souoes Wesbtiood (t99� I= 0 4W Feet The Legends of Stillwater N Wesh&uW PidesebW �ce% Im Wetland Permits Application E W �JP�rnD`e r Eden Delineated Wetland Boundaries s F' ,9W EXHIBIT 2 ' C u n fa g S a R 8 -1bnc Weac.00d ero(eamoncl Sarvicaa. Inc. GENERAL NOTES • REFER TO THE FINAL PLAT OR STE PLAT • THE CONTRACTOR SHALL %ERIFY THE LOI DENOTES SILT FENCE TOPOGRAPHICAL FEATURES WITH THE OW oENOTES EXISTING CONTOURS CONTRACTOR SHALL IMMEDIATELY NOTIFY DENOTES PROPOSED CONTOURS • THE CONTRACTOR IS TO CONTACT COPHE DENOTES EXISTING STORY SEWER • ALL SILT FENCE AND OTHER EROSION CO DENOTES PROPOSED STORM SEWER EXCAVATION /CONSTRUCTION AND SHALL I DENOTES EXISTING TREE LINE. BEEN ESTASUSHED. EXISTING SILT fENp' SHALL BE CCN90ERED INCIDENTAL TO Ta DENOTES APPROXDAATE TREE REMOVAL OMITS BE AWARE OF CURRENT FIELD CCNOITION: DENOTES EXISTING WETLANDS ES. POKING. DIK HAYBALES. ETC'.. REQUIF GRADING. • THE GRAOIHC CONTRACTOR MUST BE AWJ • Al I .y .9� •A1�: �9P V x n a° NOT FOR CCNSTRIInTinl►1 8 West Legends 4.2 u,_a,m Stillwater .ara. Ya•..ora Call 48 Heun pefy di991nq; GOPHER STATE CA Twin City kw 454 -0002 Mn. Tall Frea 1 -800- 252 -1166 su 0 10a' 204' 300' EX selx L .. ........ ................. . .... ........ --ft- -3 1 NEW ssww ........ . . . . . . . . ...... WETLANb' MATOIN- 77, 3184.85 SO. FT. JIM. J, HWLt=:92' 7.8: 1� X. .... . .... .. . . ........... ... .......... . ... ... ... .... 932 DENOTE EXIST) G PRO LE .930... ....... ........ I ........ ....... ........ 928 926 924 922 920 Of 'NOTES* R'OPO'S*Ei HORIZONTAL SCALE: I" so 100' VERTICAL SCALE: 1w = 5' QX FIXED PHOTO REFERENCE POINT X HYDROLOGY MONITORING POINT Westwood Westwood Professional Services. Inc 7529 Anagram Drive Eden Prairie, UN 55344 012 037-15150 12 2 1 (0 o) 0 50' 100' 150' EXHIBIT 5 WETLAND REPLACFMFNT MAN SMwow, USW 000 (IM); USMS WA (i9w) N 500 0 500 Feet The Legends of Sti I (water . E - w 612-937-5150 westvooA Professional Services. tnc. Wetland Permits Application S Eden Praine,MN55344 Digital Orthophotography & National Wetlands Inventory Mapping 'e EXHI BIT 6 I I 1 1 1 1 1 1 1 1 1 1 1 49B 5040 • f •. x4Ait f; " - •• 33+ w 11 4s e'"-iz 1847 '� 504 B` 5048 �- 31 ,4983 war 5048. 153 {�50 :. D46 X153 8- x 266 6' I C` 5 15 Q4�B� °� Syrnbol Name Hydric? 1055', 166 Ronneby fine sandy loam No 3 4 2 6 264 Freeon silt loam, 1 -4% slopes No 3420,` 42C "� ' � � � �� 266 Freer silt loam yes 302C Rosholt sandy loam, 6-15% slopes No 266 426 454C Mahtomedi loamy sand, 6-12% slopes No $g 34 504B Duluth silt loam, 1 -6% slopes No 504C Duluth silt loam, 6-12% slopes No 4 IS3$ 3420 302B The Legends of sti I (water Wetland Permits Armlication N W E WWestwood Prdessiianal Services. Inc. Ed Anagram Qive Eden Prairie. Md 56344 S F ;� EXHIBIT 7 A*RUG__ENV1R0NMENTAL, INC. ,S.::i t:x�;iw ny�: *w'2?C. i"_ .i�`�:3:':�.xs_ ✓XF,y^„?'�:a.F.t 7a• s ?—�?vr .7':�"i1J;�:.7:1�i'+r :L..�'s e�y_, ZERO •:.' t1�r�s `+�f1:�.ii��n:.i:��+r.�b.r'4�= nk� ^�vd_' Excelsior Boulevard, - 300, Minneapolis, Minnesota , Phone • • ' Report To :. -Dan Obermiller E.G. Rud & Sons, -Inc. ' From: Patricia Arlig �✓' (• Date: July 2, 1995 1 WETLAND DELINEATION THE CENTER FOUR 1/4, 1/4 SECTIONS OF SECTION 31, T30N, R20w STILLWATER, MINNESOTA Hans Hagen Homes plans to develop residential lots on the property 'referenced above. The property includes approximately 76 acres of land which is to be subdivided into single family ' residential lots. Most of the property was recently plowed and cultivated. The north 250 feet is wooded and not cultivated. Long Lake is located along the east edge of the property. A wetland delineation according to the requirements of the MN 1991 Wetland Conservation Act (WCA) is required prior to development of this property. Arlig Environmental was retained to delineate the wetlands on the site. Patricia Arlig, an environmental engineer trained to complete wetland delineations, placed stakes at the edge of the wetlands on the property. The field work was completed on April 22, 1995. The weather in late March was exceptionally warm. However, the temperatures dropped in early April and precipitation included both rain and snow. There had been heavy rains during the week before this field delineation. The water levels were expected to be seasonally normal. The wetlands on the site appeared to be at, or near, the ordinary high water ' levels. Surveyors from E.G. Rud & Sons, Inc. located the stakes and prepared a drawing showing those areas. Wetlands were identified and delineated using the guidelines of the FEDERAL MANUAL FOR IDENTIFYING AND DELINEATING WETLANDS (1989) and the CORPS OF ENGINEERS WETLAND DELINEATION MANIJAL (1987). The available maps were reviewed prior to the field delineation. Copies of the maps showing the project vicinity are attached. The SCS map was obtained for Washington County. The soils on or near the site are designated as Auburndale, Freer, and Ronneby which are on the Hydric Soils list and Antigo, Duluth, Freon, Mahtornedi, Roshott, and Santiago which are not considered hydric soils. The MN DNR Protected Waters map for Washington County shows Long Lake as Protected Water with a ordinary high water level of 891.5. The NWI map shows four wetland areas on the site. They are labeled as Wetlands #1, ' #4, #6, and #7 in this report. They are designated as a PEMC, PEMC, PUBF, and PEMC on that NWI map. The other three wetlands on the site are not designated as wetlands on the NWI Ior DNR maps 95018 wit ' Field investigation be g an by observin g t h e vegetation and drainage patterns. An aerial photograph and a contour drawing provided by Rud were also reviewed to identify possible wetlands. The preliminary wetland edges were determined based on vegetation. The soils were , tested by digging holes to a depth of at least 18" using a narrow bladed shovel at upland and wetland locations. A soil probe with a 3/4" opening was used to verify soil conditions around the wetland perimeters. Soil colors were determined by matching them to a Munsell Soil Color Chart. Characteristics such as presence of motteling, gleying and moisture were observed and noted. The edge of the wetland was determined to be near the point where subsurface water was within 18" of the ground elevation and where hydric soils and wetland vegetation were , encountered.-- Soil samples were observed at points well inside the we! etlands, at the wetland edges, and into the upland zones. The test holes were refilled. , Wire stakes with pink flags were placed on the delineated wetland edges. The stakes were placed at the determined edge using all three criteria; hydrophytic vegetation, hydric soils, and hydrology. , Physical characteristics such as change in grade and deposits of debris were also used to determine the wetland edge. Data Forms - Routine Onsite Determination Method were completed for conditions at each wetland. The approximate locations of the wetlands are ' highlighted on a copy of the contour drawing provided by you. WETLAND #1 is located in the northeast corner of the site. It had open water and is ' surrounded by oak trees. The water elevation on the contour map is 894. WETLAND #2 is located south of Wetland #1. It had open water and is surrounded by oak trees. It is shown as contour 900 on the drawing. 1 WETLAND #3 is overlapped the west property line. It is at approximate elevation of 934. It had some open water at the time of this site visit. WETLAND #4 is located south and east of Wetland #3. The map shows the water elevation at 926.6. WETLAND #5 is located East of Wetland #4. It is at the approximate elevation of 924. WETLAND #6 is located south of Wetland #5. The drawing shows the :`water elevation at 920.7. 1 1 WETLAND #7 is located south and west of Wetland #6. It is at the approximate contour labeled as 926 on the contour drawing. No additional wetlands were found on the site. 'Photographs were taken of the site and are ' submitted to with this report. Copies of the SCS map and the NWI map showing the site are also attached. ' Please contact Patricia Arlig at (924 -2354) with any questions regarding this information. 95018 wit jJ r uIs U 456 P4MA DUB PEMed C, PrA483 P mr; P, E :.,.'may., .Pwe : PiMF Pub Yr 4� UUOR,- pamaj PU6G 21 Ara P PEMC .1%, PEW- PgAA PEW., • Pemr- Pud 4 Pub _A. AT Pusc J al. I -pfAA& -7� lu5H U;A-L U7 PUBF U 'p VI IS.. pt� pox 02 r/-- I PUBG i Pu9c, C, 4 p\IJ PEMC. PU GK Lu)�% PiU;r j Ic Pamc PE U PEUA PEMA K --Q R \PEMO. U. PEM6 � � pU8G PEmcd PE mc. ,: /* FEW_ PeMO PU5F: D- PUBG" ';Za—pu rs. r, )ewb PEm uso 0 1 'PEJAF PEMC PEM, P531r- P�m EMA PU5r P PEMB P551, T 6 G 9 U � U, p(I PEW �9-8 P5515 FEW- PW PFEVC O—PUSG PFO pemb peme, jo PIMF PUBG Pams .: LAMC PSS16* 91:01c, Pew- - 2�) - PEW- U6G PF-MC. Pcmr- - PEMCI Pub;: C11 6\1 PIEMC 9c'm PL P5516 PEMA role, PU86 PeLv- Pub ca� 7' &L P PEMF --Q PEMC Proir, 0 F LUC. P551c-----O pamc U8F , p O-W a.- PUBG LIU5H PEUC.' p c T- -�7 G—F LIU5H AvFu"a pros PEMC, F -L,,p(jex :.PE C. PEMCI JU C, PUIBF >,;I ]0 —PUOG PEmA tY /'IV proic . ,p C;Y—pEmr- PUBG Prolf- PU5G •PIE Ax t", I \ PU6G -/VLJ -� -, 6r: Nets � .\� l �' nil •�� '` l r I I JA . 0 • � �� � j ` � \ � �.' , � ::� ` /,••� '^Y 9.96 I � j � -, .— � � •. '�� _...../ 096 1 fib• . �,•. _4..` >� '� % k.;\ - 896 c �•� 896 066 r 066 i - I SHINGTON COUNTY. R. 21 W. I R. 20 W. 2 295 000 FEET 49B , 454C 19 48 1847 9 _. r9 .' 49C 120 166: 544 �.y O 49 t2 :'. po,G yosG . 496 544: 120 ' q =.y 498 120 `r, :` c ,.�'' 456 .f'j 1 .• ice• .15�� 0.96 189 c a y•a,::^ 3676 120 120 pis 498 3020 120 AMC 445 1847 496 i'.� "102B. 3428 3678 49B _ 496 r ,• •y� 1 : + 496 ::i+ i mu ER 3 m i a na 4 3 tt ,'� X49 � J '•.. ,�6 _ �.t 30' "} T"ii '`� �� �� � %�� :..• .�{' 25 '1 ' • # t 367B.''�t 120 155C �4t NKrt s, As�`:y Swty,�" r t VLis }r h M' r 77 z.. '49,BJ-•ti si 120 ` %''• �j342C s.,..F, 342D 4t�; , ter... t � .i,.• �. 496 4540 1G i Z 3428 ? y. 9� 449. ,Ya w � �� 1055 �? f m 49 452 f,.1+ � r•�r- s3.7, :zd' 120 1. p 49 449 V' ` 3028 l.r. z, ' t Q 49D �. a'..�342C. 3020 25 �:i `r '3028' Waler �;y :`.ti•. _ g 49C s 49B .�`+' t'Y t : tt N' •.. ., .� *'r: a i _ a 498 •' �':i:• <� . + r;i: .• i� . ,, ' +;:i : t� � .war , 120 at 34 ,: v 3678 454C 449 • � !452 i � � Y'•i% .. .. `;:. ., ti 189 phi �:�: 153C 496 tf. 452 15 lsaG 858C ,� 302C _ ' ' �' 861C z 0 189 .0 s• a �j`. ... 498 toalei^: � � > 189 •.;,� � •�R': K�: , '' -� 120 �` ~;•.•7^jt 498 " 3 ,. �•,- •��. n•> , 0 *-Alp RA :: - . a �. •4538 tt'' £:: '° 1Mir tibb'! "' _ =::• i .266 153C 189 Y 0 04CK :• •' '.2' r :\4'1 '� , .n •i J `Y - water 184f 7 � 5048 36 31 t isY. C.:�. . • T- ',3� r4�i -2 g µ r .. , �. ± , • r , , 15 ,498 wares 36 . 26 � c 5048 � ., � �.��,� �.y�` >i- M. .�,; •�:;::.: 1538 266 �' . �y .., • . + p c ,.' ^', C 0 fi •' 8 Z -!� e r 342C 1538 048 1538t,,. 54 C f:s �3�676 °,' `�'•' � `� _ .r s' X66 R � ' .�i"' •� 'fry 4a : 3 153C =2 ?r 266 w 342C i! 3428 , 4264 153C 0' 0 449 153 189 55� 76 8 6C ('�7 v �r {Q 342C t5 '•, 5048 s'• 1055 5048 .189 :)7r�p � •• "`ti..:..:� w 1'• w. y�1�3428t, � _ • 3428 :;d 342C 490 '`r °M1.' 'r454D v!' ax.., +w. 342C ' ' :.� ;42C 266 °' ?f. 1452 266 428 342C , 'y'• �" • ; %~ 1g9 498 �`r'.� = @. 507•; v 120 49 ►...:j '..Y . �. . ? 53 342C �• .• C 3028 ,� 9 X1153 120 21 266 266 342D J" t,- tCr ' )Erc.r4r(ID let— 1 ' DATA FORM ROUTINE ONSITE DETERMINATION METHOD Field Investlgatorfs): a 1z Dato• 07 �!S Projecd/Ske :��,i ��t r State• County: 7-v AppiicantlOwner. Plant Community #/Name: P r h Note. If amore detailed she descrf ' n is necessary, use the bads of data form or a field notebook ----------------------------------------------- - Do norTa Pnvironmental conditions exist at the plant community? - - - - - - - - - - - ' Yes ✓ —No— Ras the vegetation. , and/or hydrology been significantly disturbed? Yes No ' --------------------------------------------------- WETLAND VEGETATION Indicator UPLAND VEGETATION IndKafor Dominant Plant Spades Status • Stratum 'Dominant Plant Species Status Stratum 2 Jrtieo 3. - S)1 rJ� h Jl_�1.__ 3. �iJntc K r� �� e �ddG 4. 4. 6. 6. ' 7. .7. . 8. 8. 10. Percent of dominant spedes that are OBL. FACW, and/or FAG ,)70 ; Is the hydrophyticvegetation criterion met? Yes ✓ No Ratio ale: '. SOILS G(� Seriesiphase: - -� °� 4 `a Subgroup-.2 u Is the soil on the hydric soils lit? Yes No _,,�, Undetermined Is the soil a Hisiosol? Yes No Histic ep'pedon present? Yes No r Is the soil: Mottled? Yes No Gleyed? -Yes ✓ No Matrix Color: %!/ �m LfLIY Mottle Colors: Other hydric soil indicators, ' Is the hydric soil criterion met? Ye No Rationale: - - _- - - HYDROLOGY 3 -/at, 0 �a Is the ground surface Inundated? Yes -,_%C No Surface watertiepth: Is the soil saturated? Yes ✓ No d 1 Depth to tree- standing water in ph/soil probe hole: G List r field eviden-ce of surface inundat' n or soil say ration.`'r ' Ls the we nd hydrology critar n met? Yes -,e—.-' No Rationale; JURISDICTIONAL DETEF{MINATION AND RATIONALE Is the plant community a wetland? Yes L/ No Rationale f " r'' id' nal docision: D M a. ! 3 -' f � g o fro fir, � .dam+ --G `-�- •-�'� DATA FORM ROUTINE ONSITE DETERMINATION METHOD Field lnvestiga ` Date: I-/— Projectishe: '• 9J� State: M W Countty' /4-s 0 r IV6 TOM Applicant/Owner. plant Community #/Name: - PIEM 4— r+.gt �-, Au Note: U amore detalled she de `� ption Is necessary, use the bads of data form or a field notebook. --------------------------------------------------- Do norms! svironmental conditions -exist at the plant community? I Yes ✓ No Has the vegetation, , and/or hydrology been significantly disturbed? Yes - -- --------------------- --- ----------------- - - - - -- WETLAND VEGETATION Indicator UPLAND VEGETATION Indicator Dominant Plant Species Status Stratum 'Dominant Plant Species Status Stratum X 2. .Phe J 3. 3. 4. 4. l bcrr; c FJ 7. i7. , 8. 8. 9. 9. 10. Percent of dominant species that are OBL. FACW, and/or FAO. D Is the hydrophytic vegetation criterion met? Yes ✓ No SOILS Series/phase: _���•.- l..X�7 Subgroup :2 Is the soil on the hydric soils list? Yes No y-,::::" Undetermined Is the soil a Histosol? Yes No ep'ipedon present? Yes No Is the soil: Mottled? a T_Lz No Gleyed? -Yes— No -� Matrix Color: _ ,Mottle Colors: 2. Other hydric soil ind'ica ors: Is the hydr'rc soil criterion met? Yes ✓ No Rationale`: - Lam./ r .,,- ...-t. A , . HYDROLOGY 31 a -`-►�' Is the ground surface inundated? Yes __.,Z No Surface water depth: Is the soil saturated? Yes ✓ No J y Depth to free-standing water In ph/soil probe hole: List ott or field evidence of surjpce inundation or soil saturation. „ • ,o 4 . Q/ Is the wetland hydrology criterion met Yes ✓ Nv I Rationa JURISDICA6AL DETERMINATION AND RATIONALE is the plant community a wetland? Yes ✓ No e-If fl�v, �� u J ,57-cA IVO �' 3 DATA FORM 0 ROUTINE ONSiTE DETERMINATION METHOD .' Field Inveatigator(s • r �� Date- r °�O�' �s ProJeWSite :- -fit Jof e State: Coun , A .3 H 14 sr),.y Applicant/Owner:-- N ` ► N °: �f= Plant Community ame: _.�� Pin 'fin Note-------------------------------------------------- If amore detailed site description Is necassary, use the back of data form or a field not Do normal environmental conditions-exist at the plant community? Yes ✓Flo H" the vegetation, 8013, and/or hydrology been significantly craturbed? Yes No WETLAND VEGETATION indicator UPLAND VEGETATION Indimlor Dominant Plant Species Status • Stratum 'Dominant Plant Species Status Stratum 1. -� � >�• FRt� t, tic �L. �- 2. t oa - *�' 2 3IwJc 6U r; c Fi}c', 3. - LJi F*e, -J _ •3 C3Jak- 4c�or^ ii' .) � � e- .1 4. ,A-0'e 0 fsc- . Z. G -.. 6. 7. ;7. 8. g. 10. Percent of dominant spades that are OBL. FACW, and/or FAC��d Is the hydrophytic vegetation criterion met? Yes .✓ No Serieslphase: iL -o n n r, to ../ ' Subgroup• Is the soil on the nydric soils list 7 es s� No Undetermined Is the soil a Histosol? Yes No ✓Histic spiipedon present? Yes No Is the soil: Mottled? Yes No Gleyed? -Yes ✓ No Matrix Color•. —��! t=o y . Mottle Colors• D Other hydr'rc soil nd'icators: Is the hydrrc soil criterion met? Yes No 0 �� --- Rationale: HYDROLOGY- ,r Is the ground surface inundated? Yes _� No Surface watertdepth: �"`�'�� Is the soil saturated? Yes--,- No Depth to tree - standing water in piUsoil probe hole List er field evidence, of surface inundat' or soil saturaticiR Is the wetlan"ydrology criterioq met? Yes No .JURISDICTIONAL DETERMINATIOKAND RATIONALE Is the plant community's wetland ?. Yes No Ratio alg'i��r juri�sdictionai decision: L..oO A r-C- ' FORM owl ROUTINE ONSITE DTETERMINATION METHOD'- Field Invest;gator Date • N� Project/she. i State: County:. r A-SH ► Ton/ ' Applicant/Owner: Plant Community #Mama: Note: ff a.more detailed she descriptio Is necessary, use the bacit of data form or a field notebook Do normal environmental conditions exist at the plant community? PPe� J,, be- Yes No ./ Has the vegetation, soils, and/or hydrology been significantly disturbed? Yes /No WETLAND VEGETATION Indicator UPLAND VEGETATION Ind;cdor Dominant Plant Species Status Stratum 'Dorrilnant Plant Species _ Status Stratum ' 2. 2 4. 4. , 5. 5. 6. 6. 7. 8. ;8. 10. � Percent of dominant species that are OBL. FACK and/or FAC 1s the hydrophytic vegetation criterion met? Yes —No----'-' Seriestphase: Subgroup•:2 Is the soil on the hydric soils list? Yes No Undetermined ✓ ' Is the soil a Histosol? Yes No _ ,,Gl=lista ep'ipedon present? Yes No ./ Is the soil: Mott ? Yes No ✓ le ed? -Yes No Matrix Color: -�� �-+ T -Mottle C�lors: Other hydric soil 7d rotors: 17o n e, Is the hydric soil criterion met? Yes No Rationale: , _ - - n r _� i r u-r �c� c ow�� v vwu�c✓ ' HYDROLOGY Is the round surface inundated? Yes depth: co g _� No Surface water tie Is the soil saturated? Yes No ' Depth to free-standing water in ph/soil probe hole: List other field evidence of surface inundation or soil saturation. Is the wetland hydroiNy criterion met? Yes No ' Rationale- JURISDICTIONAL DETERMINATION AND RA ONALE , Is the plant community a wetland? Yes No Ratio ale for'ur'tsdi Tonal decision: } DATA FORM ROUTINE ONSITE DETERMINATION METHOD Field Investigators • r (i Date: ' ProJewSite: State: Coun�t ESN 1 6TD ApplicantNwner: G^ Plant Community #/Name: "S�F �"I G Note: If amore detailed she description Is necessary, use the back of data fors or s field notebook Do normal environmental conditions -exist at the plant community? Yes �No Has the vegetation, sots, andlor hydrology been signdicantiy disturbed? Yes No ' WETLAND VEGETATION Indicator UPLAND VEGETATION Indicator Dominant Plant Specks Status • Stratum 'Dominant Plant Species Status Stratum 4. r Y`-•o t FIK J T3•i c c�l 4. b -E -ff-"s J L. 6. 6. 7. ;7. 8. 6. Percent of dominant species that are 08L. FAGW, andlor FAC Is the hydrophytic vegetation criterion met? Yes ✓No ' Rations 7d fl V ti r rr ,/ / SOILS b Series/phase: �O n n� 4! 1 !'(- ��.�.," Z% • Subgroup:2 Is the soil 'an the hydric soils list? Yes No Undetermined Is the soil a Histosol? Yes No ✓Histic ep'rpedon present? Yes No • / Is the soil: Mottled? Yes No Gleyed? •Yes ✓ No Matrix Color: Mottle Co�fofs: ... i Other hydrc soil in icators: Is the hydric soil criterion rn ? Yes a No Rationale: .l_.,— m,Ju- t.t..�! LvrJi G�.rG, 'S iC�tV HYDROLOGY ,I Is the ground surface inundated? Yes_ No Surface water>iepUs: /,D Is the sot saturated? Yes ✓ No � P r Depth to free- standng water in ph/soil probe hole: List other field WAdenoe of urface inundation or soil saturation. Is the weUand hydrology criterion md0 Yes •/ No Rations ; s JURISDICTIONAL DETERMIN TION AND RATIONALE Is the plant community awetland? Yes %./ NO T-LA f%U DATA FORM %0 ROUTINE ONSITE DETERMINATION METHOD Field Investigator(s): r Date: ProJecVSite: State: County:. AppliicanUOwner. Plant CommuOrty #1Name: =3,2± l PFr► 3f L 1 Note: 9 amore detailed she description Is necessary, use the back of data form or a field notebook J - - - - - Do normal enAronmenW conditions exist at the plant community? - - - - - - - - - - - - - Yes " /No Has the vegetation, sods, andtor hydrology been significantly disturbed? Yes No -------- - - -... - -_. ----- - - - - -- . ----------------- - - - - -- WETLAND VEGETATION indicator UPLAND VEGETATION Indicator Dominant Plant Spades Status • Stratum "Dominant Plant Species Status Stratum 2. .2. 3, g• D .15 f4ea •1 rC •C. 4. 4. S. 5. 6. 6• 7. :7. 8. 8. Percent of dominant species that are 0BL, FACW, and/or FAG ?� lathe hydrophytio vegetation criterion met? Yes ✓ No SOILS U U c Series/phase: Subgroup :2 -�fS �^�► i�, Is the soil on the hydric soils list? Yes No _sC Undetermined Is the soil a Histosol? Yes No Histic ep'ipedon present? Yes No Is the soil: Mo Yes _sC No Gleyed? -Yes s4--_ No _ Matra Color. 4 Mottle Colors: - 12./ �� • J �2 Other hydric soil indicators: Is the hydra soil criterion met? Yes_,-a No HYD Is the ground surface inundated? Yes _, No Surface watertlepth: is the soil saturated? Yes-jC No f a „ Depth to tree- standng water in piUsoil probe hole: Llstjqt�er field evidence of surface inundation or soil saturation. Is the wetland hydrol9dy criterion met? Yes 4-,W No JURISDICTIONAL DETERMINATION ANO RATIONXLE Is the plant community a wetland? Yes 4., No f 1 1 1 1 1 1 1 1 1 Ll b" .57-t"q. wn (;: � v DATA FORM G ROUTINE ONSITE DETERMINATION METHOD Field Inveatigstor(g • Date: `�'" �0 - Project/She: State : -n t4—. Coun �� o AppGcantA?wner. 4- Plant Community */Name: MI b � o— � t Note. h amore detailed she descxi ' n is necessary. use the bads of data town or a field notebook. -------------------------------------- Do normal environmental conditions-exist. at the plant community �J Yes _No_ Has the vegetation, sob, anctlor hydrology been significantly disturbed? Yes No - 7 ,d WETLAND VEGETATION Indicator UPLAND VEGETATION �1 Dominant Plant Species Status Stratum 'Dominant Plant Species 2 .2 — 3. 4. 4. 6. 6. 7. 8. .8. 10. Percent of dominant species that are OBL, FACW. and/or FAG Is the hydrophytic vegetation criterion met? Yes / No Rationale:. Md'x;ator Status Stratum Series/phase: vw') [ h Is the soil on the hydric soils list? Is the soil a Histosol? Yes Is the soil: Mottled? Yes _� Matrix Color: Other hydric soil Indicators. Yes ' No ✓ Undetermined No ✓Histic sp'ipedon present? Yes No No Gleyed? -Yes No /D 2 Mottle Colors• No /0 /a y2 Is the hydric soil criterion met? Yes / No Is the ground surface inundated? Yes / No Surface watertiepth: Is the soil saturated? Yes tl No Depth to free- standing water In pit/soll probe hole:. JURISDiCMONAL Is the plant community a wetland? Yes Ratio_— nale f ' urisdictional decision: No 1 0.15T-Ln-dD :�` DATA FORM ROUTINE ONSITE DETERMINATION METHOD• Field Investrgator(s • , Oate. Project/Site: State: County. W As 9 rYs 7-0 ApplicanVOwner: Plant Community #/Name: i?tr M C. P" IY � Note: If amore detailed site de 'an is necessary, use the back of data form or a field notebook. - Do normal environmental conditions,exist at the plant community? G�-oa` �-.- •var i Yes No ./ fro Has the vegetation, sob, andlor hydrology been significantly disturbed? Yes No --------------------------------------------------- lndicat" Status W v WETLAND VEGETATION Dominant Plant Soecies 1.f 3. 4. 12ACaSE 5. 6. 7. 9. Indicator Status iJ UPLAND VEGETATION 'Dominant Plant Species x v r- 2 ro 3. (*olA. r4el 4. 6. i7. 8. .9. 10. Percent of dominant specie's that are OBL, FACK andtor FAG Is the hydrophytic vegetation criterion met? Yes ✓ No RationaleL -4 " 'C r 79 - _ _ l J SOILS 2 Sedeslphase: J Subgroup. Is the soil on the hydric soils fist? Yes ' No ✓ Undetermined Is the soil a Histosot? Yes No ✓ Histic ep'ipedon present? Yes No .� Is the soil: Mottle ? Yes �� No Gleyed? -Yes f N Matrix Color. , 5 na —'� � Mottle Colors: .sZzr= Other hydric soil indicators: Is the hydric soil criterion met? Yes y No Rationale: _. - .. _ ..... 1. . . HYDROLOGY v u v Is the ground surface inundated? Yes No Surface water depth: y�✓`'`'� w�� ' Is the soil saturated? Yes ✓ No 11 .. - Depth to free- standing water in p7rVsoil probe hole: - .4 List other field evidence of surface inundation or soil saturation. Is the wetlarti ydrolooy criterion et? Yes _Le� No — Ration / / L JURISDICTIONAL DETERMINATIO AND RATIONALE Is the plant community a wetland? Yos 6.e---' No Rationale fKWsdictioAal decision: NATIVE GRASS AND WILDFLOWER SEED MIX ' AND APPLICATION RATES The Legends of Stillwater Stillwater, Minnesota NOTES 1. WITHIN 72 HOURS AFTER COMPLETION OF FINAL GRADING, THE NATIVE MIX SHALL BE SEEDED ON DISTURBED SOILS ABOVE WATER LEVELS AROUND STORMWATER PONDS AND WETLANDS BELOW THE LIMITS OF WETLAND BUFFER ZONES. SEEDED AREAS SHALL BE MULCHED WITH TYPE I MULCH AT A RATE OF 2 TONS PER ACRE AND THE MULCH SHALL BE ' DISC- ANCHORED. TREE AND SHRUB PLANTING BEDS MAY BE LEFT UNSEEDED. 2. NATIVE GRASS AND WILDFLOWER SEED MATERIALS SHALL BE ACQUIRED AND INSTALLED IN ACCORDANCE WITH THE SEEDING MANUAL FOR NATIVE SEED MIXES - MINNESOTA DEPARTMENT OF TRANSPORTATION 1995196 (MINNESOTA DEPARTMENT OF TRANSPORTATION TURF ESTABLISHMENT AND EROSION PREVENTION UNIT, 1995) AND THE STANDARD SPECIFICATIONS FOR CONSTRUCTION, 1995 EDITION (MINNESOTA DEPARTMENT OF TRANSPORTATION, 1995). 3. THE SEED MIX AND APPLICATION RATES SHALL BE AS SPECIFIED BELOW. 4. SPECIES MARKED BY AN ASTERISK ( *) ARE NATIVE LEGUMES AND SHALL ' BE PRE - INOCULATED WITH THE PROPER BACTERIAL CULTURE. RATE TABLE ' COMMON NAME BOTANICAL NAME APPLICATION RATE Grasses Pounds Pure Live Seed /Acre Big bluestem Andropogon gerardi 5.0 Canada wildrye E/ymus canadensis 3.0 Indiangrass Sorghastrum nutans 5.0 ' Little bluestem Schizachyrium scoparium 4.0 Switchgrass Panicum virgatum 2.0 Wildflowers Ounces Bulk Seed /Acre New England aster Aster novae - angliae 4.0 Showy tick - trefoil* Desmodium canadense 3.0 ' Joe pye weed Eupatorium macu/atum 3.0 Ox -eye sunflower Heliopsis pycnostachya 4.0 Prairie blazingstar Liatris pycnostachya 5.0 Wild bergamot Monarda fistu/osa 4.0 Purple prairie clover* Peta/ostemum purpureum 3.0 Yellow coneflower Ratibia pinnata 5.0 Black -eyed Susan Rudbeckia hirta 6.0 ' Blue vervain Verbena hastata 4.0 Golden Alexander zizia aptera 3.0 Nurse SSLQR Pounds Bulk Seed /Acre ' Oats 40.0 Prepared by: W Westwood Professional Services, Inc. February, 1998 IFORM A DECLARATION OF RESTRICTIONS AND COVENANTS FOR REPLACEMENT WETLAND for The Legends of Stillwater, Stillwater, Minnesota ' THIS Declaration of Restrictions and Covenants for Replacement Wetland ( "Declaration ") is made this day of , by the undersigned, hereinafter referred to collectively as the "Declarant." WITNESSETH: WHEREAS, Declarant is the fee owner of property containing a wetland (as defined in Minn. Rules part 8420.0110, subp. 52) that will be created or restored (hereinafter, "Replacement Wetland ") and Declarant is also any other party defined as a Landowner under Minn. Rules part 8420.00 10, subp. 29 who is seeking approval of (1) a replacement plan pursuant to Minn. Stat. § 103G.222 and Minn. Rules part 8420.0530 or (2) a bank plan pursuant to Minn. Rules part 8420.0740; and WHEREAS, the Replacement Wetland is located on the following described property, as shown ion Exhibit A attached hereto and incorporated herein, to -wit: UU platted roperty within the NW and SW 1/4 of Section 31 Township 30 North, Range 20 West, Cijy� Stillwater. Washington Cowly. Minnesota: and WHEREAS, the Replacement Wetland is subject to the Wetland Conservation Act of 1991, LMinn. Stat. § 103G.222 et sea., and all other provisions of law that apply to wetlands, except that the exemptions in Minn. Stat. § 103G.2241 do not apply to the Replacement Wetland, pursuant to Minn. Stat. § 103G.222 (h) and Minnesota Rules part 8420.0115.; and WHEREAS, the Local Government Unit " ) charged ed with approval of the ( g PP Replacement P Plan is the City of Stillwater, which address is 216 No. 4" Street. Stillwater. MN 55082; and ' WHEREAS, the LGU is hereby authorized to release from this Declaration any land contained in the above - described legal description if the LGU subsequently determines that non - wetland areas have ' been encumbered by this Declaration. NOW, THEREFORE, Declarant makes the following declaration as to restrictions and covenants ' for the Replacement Wetland. The restrictions and covenants described below shall run with the land and shall be binding on the Declarant, his heirs, successors and assigns: 1. The Declarant is responsible for maintaining the size and type of the Replacement Wetland, as specified in the replacement plan or bank plan approved by the LGU and on file at the office of the LGU. 2. The Declarant is responsible for the costs of maintenance, repairs, reconstruction, and replacement of the Replacement Wetland which the LGU or Board of Water and Soil Resources may deem necessary to comply with the specifications for the Replacement Wetland in the approved replacement plan or bank plan. 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Declaration of Restrictions and Covenants For Replacement Wetland for The Legends of Stillwater, Stillwater, Minnesota Form A Page 2 3. The Declarant shall grant the proper authorities reasonable access to the Replacement Wetland for inspection, monitoring, and enforcement purposes. Further, Declarant shall be responsible for having a title search performed to determine any other parties who may have an interest in the land on which the Replacement Wetland will be located. Declarant acknowledges that he has obtained the consent of all such parties (e.g., mortgagees, contract for deed vendors of vendees, holders of easements, licenses, liens, etc.) and that the necessary consents are attached hereto. Further, Declarant shall record this Declaration and provide proof thereof to the LGU before proceeding with construction of the Replacement Wetland. Declarant shall be responsible for the costs of document recording. IN WITNESS WHEREOF, the Declarant has set his hands. DECLARANT (fee owner) (s) ACKNOWLEDGMENT OF DECLARANT (fee owner) (s) STATE OF MINNESOTA ) ) ss. COUNTY OF ) The foregoing instrument was acknowledged before me this day of Notary Stamp or Seal by Notary Public Declaration of Restrictions and Covenants For Replacement Wetland for The Legends of Stillwater, Stillwater, Minnesota Form A Page 3 DECLARANT (if other than fee owner) ACKNOWLEDGMENT OF DECLARANT (if other than fee owner) STATE OF MINNESOTA ) ) ss. COUNTY OF ) The foregoing instrument was acknowledged before me this ,by Notary Stamp or Seal This instrument was drafted by: Jennifer K. Park Assistant Attorney General Suite 200, 520 Lafayette Rd. St. Paul, MN 55155 Notary Public t day of c.w OOCUMENTSIWETLMWWET PERMIT APPLITHE LEGENOSVLEGENOSRESTPJGr.00C 1 1 1 1 1 1 � GRADING FOR � RESIDENTAL AND � COMMERCIAL � PROPERTIES 1 1 1 1 1 1 1 1 ORDINANCE NO. 686 1 AN ORDINANCE ESTABLISHING REQUIREMENT PROCEDURES AND STANDARDS FOR THE ISSUANCE ' OF GRADING PERMITS WITHIN THE CITY OF STILLWATER The City Council of the City of Stillwater does Ordain: Section 1. Adding the Stillwater City Code is hereby amended by adding Section 31.01, Subd. 27, GRADING PERMITS that shall hereafter read as follows: Section 31.01, Subd.27. GRADING PERMITS. ' A. GRADING PERMITS REQUIRED. 11 1. No person shall undertake, authorize-or permit any of the following actions ' without first having obtained a grading permit from the city: ' a. any excavating,\ r change in the �resulting oin� earth's topography the movement of more than 50 cubic yards of material, except in any designated Wetlands, Floodplain or Shoreland` District; b. any excavating, grading, filling or other change in the ' earth's topography in any designated Wetlands, Floodplain or Shoreland District; or ' C. any mining operation for gravel or other materials. ' d. any changing of a natural drainage way or drainage pattern that results in increasing or intensifying the flow of surface water upon adjacent property. ' 2. Notwithstanding the above, no grading permit shall be required for the following activities, except as ' required by the Minnesota State Building Code: a. earthwork undertaken in accordance with grading Plans approved in conjunction with a site and building plan review ' or plat approval; or ' b. earthwork which will result in moving less than 50 cubic yards of material, provided the work does not take place in any designated Wetlands, Floodplain or Shoreland District and does not affect local drainage patterns. 11 i 3. No grading permit shall be issued for site grading without approved plans for site development and adequate provision for -site protection from wind or water erosion. 4. No person -shall undertake, authorize or permit any excavating, grading, filling or other change in the earth's topography which violates or is not in compliance with a , grading permit issued by the city, including the approved plans and all terms and conditions of the pemit. ' 5. All grading permits which would result in the moving of more than 1,000 cubic yards of material per acre of site area shall be reviewed as a conditional use permit under , the standards outlined in subdivision 27 of this section, to the extent possible grading permit review will be combined with other planning permit reviews. , B. REVIEW OF GRADING PERMITS. 1. Application for a grading permit which requires review as a conditional use shall be made to the Community Development Director on forms provided by the city and shall be accompanied by the following as required: a. the legal description of the property; b. the fee required by Chapter 70 of the Uniform Building Code; and C. evidence of ownership or an interest in the , property. d. existing and proposed final grades utilizing ' two foot contour intervals; e. a survey showing the location and elevation of all roads, utilities and structures which may be ' impacted by the proposal; f. a tree survey showing all trees having a ' caliper of six inches or greater and a tree preservation plan; ' g. a landscaping and site restoration plan; h. a development concept plan indicating how the ' recontoured parcel may be developed in a manner-. consistent with this ordinance and the comprehensive plan; i. a drainage plan which includes any engineering ' work for stormwater retention which may be necessary; i I j. an erosion control plan indicating the type and location of erosion control measures to be used; k. a traffic analysis showing how the materials will be removed from or delivered to the site; 1. two copies of all available soil borings together with boring location maps and any other soils information pertenent to improvements. M. such other information as may be required by the city. ' n. schedule of building construction phasing on Permit site. C. ADMINISTRATION REVIEW OF GRADING PERMITS. a. Grading plans which would result in the move of more ' than 50 but less than 1,000 cubic yards of material per acre may be approved by the Community Development Director. The applicant shall submit the required items from B above. b. Upon receipt of a completed application, the Community Development Director shall review the application .within ten working days and shall notify the applicant of the decision by mail. The Community Development Director may impose such modifications and conditions as may be necessary to protect the public. interest.' Bonding may be ' required in any amount sufficient to ensure site restoration should the applicant default on his or her responsibilities. D. GRADING PERMIT STANDARDS. Grading permits shall be issued only for grading plans which comply with the following; ' a. The plans shall maximize the preservation of trees on the property and utilize the trees to the maximum ' extent possible to screen the grading from adjacent property; b. The plan shall utilize landscaping to restore site aesthetics, minimize the visual impact of the work, screen the grading from adjaceant property and enhance ' the property's development potential. All areas altered because of grading activity shall, at a minimum, be restored with seed and disced mulch or sod within two weeks after the completion of the activity. The city may approve an extension of this deadline if appropriate, but in no case shall site restoration be delayed beyond October 1; ' 3 C. The plan shall not result in sites which are unsatisfactory for development of permitted uses. The development potential of a site may be adversely impacted by such matters as unsuitable finished grades, poor soil stability, unsatisfactory drainage or exposure to deleterious influences such as highway frontages for , residential property; d. The plan shall provide for the removal of any significant amounts of organic material or construction ' debris from the site; e. In instances where an existing natural or created , buffer will be impacted by grading or filling operations, site restoration shall be completed in a manner which resembles, to the extent possible, the original vegetative and topography state of the property, when deemed appropriate by the city; f. The plan shall protect designated wetlands, , floodplains, shorelands, public waters and other natural features to the maximum extent possible; ' The plan shall g. p provide for adequate drainage, - stormwater retention and erosion control measures; , h. The plan shall provide for traffic movements to and from the site which do not have significant adverse affects on roads, intersections or development in the area. Streets surrounding the site shall be swept as ' needed to remove any debris which may accumulate due to these activities; - - i. The plan shall include a schedule of activities which limits the duration of off -site disruptions and impacts; ' j. The plan must also be approved, where required, by appropriate watershed districts, the United States Army Corps of Engineers, the Minnesota Department of Natural ' Resources and any other government agency which has jurisdiction; k. The plan shall be accompanied by a bond sufficient to insure compliance with the approved permit and adequate site restoration. The amount of the bond shall , be based upon the size of the site, sensitivity of-its surroundings, extent of grading, amount of material moved, necessary site restoration and potential impacts upon public facilities, including damage to public roadways and property; and E t 1. The plan shall comply with the Minnesota State Building Code and all other applicable statutes or ordinances. E. This Ordinance shall be enforceable by injunction in any ' court of competent jurisdiction. F. In addition to any civil remedy provided by this ' Ordinance, violation shall be a misdemeanor, punishable as provided from time to time by the statutes of the State of Minnesota. Wally ;Abrahamson, Mayor Attest: / ' Mary Loop Johnson, ¢perk ' Publish: September 29, 1988 1 5 r' TO: GRADING PERMIT APPLICANTS FROM: PLANNING DEPARTMENT DATE: MARCH 27, 1989 SUBJECT: EROSION CONTROL PLAN Erosion Control Plans must be submitted with grading plans. The plan consists of two parts: A narrative and a site plan. The narrative explains site problems and their solutions with necessary documentation. The site plan is one or a series of map illustrating the narrative. CHECK LIST FOR SITE PLAN PREPARATION 1. Location Map - A small map locating the site in relation to the surrounding areas. 2. Indicate North - Show the direction of north in relation to the site. 3. Scale - Indicate scale, using a graduated line, which represents the drawn dimensions in relation to actual size of the project site, usually in number of feet per inch. 4. Benchmark - An established elevation affixed to a permanent object which can be used to check grade. 5. Plan Drawing - A drawing of project site which includes: t' - t t contours of the site (at least a. Exis ing Contours Existing wo -foo ._.. __._..___,__.__.____.�.____._ 200 feet beyond property boundary). ' b. Final Contours - Changes to the existing contours. c. Existing Vegetation - Existing tree lines, grassy areas, or unique vegetation. d. Soils - Boundaries of the different soil types. ' e. Property Boundary and Lot Lines - Boundaries of the property, lot Tines, section lines and adjacent plats. t f. Elevation and Grade - Elevation of lot corners, grade of street, parking lots, NHL and HWL of ponds, wetlands, and lakes, elevation of storm sewer inlets and outlets, and elevations of first floor of proposed structures. ' g. Drainage - The dividing lines and the direction of flow for the different drainage areas. ' h. Critical Erosion Areas - Areas with potentially serious erosion problems. i. Limit of Clearing and Grading - Areas which are to be cleared and graded. 1 - - 1 1 1 1 1 1 1 1 Utility - Locations of utilities in the area of the proposed development. k. Location of E & S Practices - Location of the erosion and sediment control and storm water management practices used on the site.d Illustrated with detailed drawings. 1. Structural Practices - Any structural practices used that are not referenced in this handbook or other local handbooks. Explain and illustrate with detailed drawings. 6. Plan Preparer - Include the signature of the individual or agency responsible for the preparation of the E & S control plan. 7. Responsible Individual - Include a signature of the individual responsible or implementation and maintenance of E & S measures. CHECKLIST FOR PLAN NARRATIVE PREPARATION 1. Project Description - Description of the nature and purpose of the land disturbing activity, and the amount of grading involved. 2. Phasing of Construction - Description of proposed stages of grading, utilities and wilding construction. 3. Existing Site Conditions - Description of the existing topography, vegetation and drainage. 4. Adjacent Areas - Description of neighboring areas such as streams, lakes, residential areas, roads, etc., which might be affected by the land disturbance. 5. Soils - Description of the soils on the site giving such information as ' soil names, mapping unit, erodibility, permeability, depth, texture, and soil structure. 6. Critical Areas - Description of areas on the site which have potential for serious erosion problems. 7. Erosion and Sediment Control Measures - Description of the methods which will be used to control erosion an sedimentation on the site. (Must satisfy the "General Criteria" in Appendix A.) ' 8. Permanent Stabilization - Brief description, including specifications, of how the site will be stabilized after construction is completed. ' 9. Stormwater Management Considerations - Will the development of the site result in increase peak rates of runoff? Will this result in flooding or chananel degradation downtstream? If so, considerations should be given to stormw ater control structures on the site. ' 10. Maintenance - A schedule of regular inspections and repair of erosion and sediment control structures. 2 , 1;4. Calculations - Any calculations made for the design of such items as sediment basins., diversions, waterways, and calculaitoons for runoff and stormwater detention basin design (if applicable). ' NOTE: Refer to Minnesota Construction Site Erosion and Sediment Control Planning handbook for best detailed practices description and specifications ' prepared by Minnesota Soil and Water Conservation Districts, and Washington County Soil and Water Conservation District, 1825 Curve Crest Boulevard, Room 101, Stillwater Minnesota 55082. Phone Number 439 -6361. ' ' Permit No. Date ' Fee CITY OF STILLWATER GRADING PERMIT APPLICATION �ocation of Property wner of Property: App scant /Contractor if other than Owner Name Name of Company Address Address ' Phone Number Phone Number Contact Person Amount of soil moved ate Grading will commence ate Grading will be completed he following information shall be submitted with this application for a Grading Permit. 1. The legal description of the property;. 2. The fee required by Chapter 70 of the Uniform Building--Code; '3. Evidence of ownership or an interest in the property; 4. Existing and proposed final grades utilizing two foot- contour intervals; 5. A survey showing the location and elevation of all roads, utilities and 'structures which may be impacted by the proposal; 6. A tree survey showing all trees having a caliper of six inches or greater and a tree preservation plan; '7. •A landscaping and site restoration plan; 8. A development concept plan indicating how the recontoured parcel *may be developed in a manner consistent with this Ordinance and the Comprehensive Plan. 9. A drainage plan which includes any engineering work for stormwater retention 'which may be necessary; 10. An erosion control plan indicating the type and location of erosion control measures to be used; 11. A traffic analysis showing how the materials will be removed from or delivered to the site; 12. Two copies of all available soil borings together with boring location maps and 'any other soils information pertinent to improvements; 13. Such other information as may be required by the City. NOTE: All grading plans for over 1,000 cubic yards shall be prepared by a qualified Ifroessional. PERMIT FEE PLAN CHECK FEE TOTAL FEE ,BOND REQUIRED: YES NO AMOUNT fPECIAL CONDITIONS OF APPROVAL: The following Special Conditions of Approval shall be incorporated into the grading plans for the property. 'Reviewed by , Community Development Director. 4. As -built elevation of all lot corners. ' 5. As -built of the first floor, garage, basement or walkout. 6. Elevation of swale with drainage arrows verifying minimum slope. ' Revised: 6 -23 -98 1 GRADING PLAN BUILDINGS , FOR RESIDENTIAL Every proposed new building requires a grading plan to be submitted with the building permit plans. The following items are required to be shown on the proposed grading plan: ' 1. The location of the buildin g, driveway, , tree cover (every tree over 6" in diameter shall be individually located on the plan), wetlands, drainage ways or ditches, city streets, neighboring structures, easements, including trail, conservation, drainage and ' utility and other significant features. 2. The existing elevation (MSL) of the building pad, neighboring structures, top of curb ' at the driveway, wetlands elevation, all lot corners and any drainage structures. 3. The proposed elevation (MSL) of the first floor, lowest floor,'-garage floor, walk -out , (if any), high or low points (breaks in grade). Percent grade of driveway, maximum 8 percent. ' 4. Drainage arrows showing the route of run off across the lot with proposed elevations (MSL) of drainage swales. ' 5. If the lot is adjoining a wetland, the plan should show how erosion will be controlled. Nomially a silt fence or other erosion control method will be required along the flow ' path to the wetland. 6. Any retaining walls with top and bottom wall elevations, steep slopes, or other , special grading features should be denoted. 7. Name of homebuilder and landscaper who does final grade. ' An as-built grading plan, which verifies all items listed above, will be required to be submitted along ' with a request for release of escrow funds to the engineering department before the grading escrow will be refunded. The following items are required to be submitted on the as -built grading plan: ' 1. Location of water service and sanitary service connection to the house. 2. Ties to any bends in the sanitary service line. ' 3. The location of the building, driveway, tree cover, wetlands, drainage ways or ditches, city streets, neighboring structures, and other significant features. ' 4. As -built elevation of all lot corners. ' 5. As -built of the first floor, garage, basement or walkout. 6. Elevation of swale with drainage arrows verifying minimum slope. ' Revised: 6 -23 -98 ' 7• Name of homebuilder and landscaper who does final grading. A cash escrow in an amount established by resolution shall be paid before a building permit is issued ' for all new construction. The fees are as follows: Residential dwellings: $1,500.00 grading escrow ' 50.00 engineering fee (non - refundable) ' The cash escrow shall be returned to the permit applicant, without interest, upon successful completion of all of the following: ' 1. Submit the as -built grading plan along with the request for release of escrow funds. ' 2. Written certification from a registered engineer or land surveyor that the grades and elevations are in conformance with the City approved grading plan and verification by a surveyor that permanent iron monuments are in place at each lot corner. 3 • Water service curb box access cover at finished grade and curb box valve operable. ' If the escrow items are not completed within 60 days, excluding the time between October 1 st and May 1st of issuance of a Certificate of Occupancy, the City may enter the lot, perform the work, and apply the cash escrow toward the cost, plus administrative fees. In addition to the cash escrow, an escrow administration fee in an amount established by resolution ' shall be paid before a permit is issued for all permits requiring escrow per Ordinance Section. �I Revised: 6 -23 -98 1 GRADING PLAN , FOR COMMERCIAL BUILDINGS Eve ry p r opos e d ne w building requ ires a grading p lan to be submitted with the building permit plans. The , following items are required to be shown on the proposed grading plan: , 1. The location of the building, driveway, tree cover (every tree over 6" diameter shall be individually located on the plan) wetlands, drainage ways or ditches, city streets, neighboring , structures, easements, including trail, conservation, drainage and utility, and other significant features. , 2. The existing elevation (MSL) of the building pad of neighboring structures, top of curb at the driveway, wetlands elevation, all lot corners and any drainage structures. ' 3. The proposed elevation (MSL) of the building floors and high or low points (breaks in grade). ' 4. Drainage arrows showing the route of run off across the lot with proposed elevations of drainage swales, proposed storm sewers, holding ponds and copies of engineering ' computations. Lots bigger than one acre must provide a contour map. 5. The plan should show how erosion will be controlled. Normally a silt fence and other erosion control methods will be required. Also, turf establishment will be required immediately after grading. 6. Any retaining walls with top and bottom wall elevations, steep slopes, or other special grading features should be denoted. 7. The plan should indicate a storm water and water quality management plan. An as -built grading plan, which verifies all items listed above, will be required to be submitted along with a request for release of escrow funds to the engineering department before the grading escrow will be refunded. In addition to the items listed above, the following items are also required to be submitted on the as -built grading plan: 1. The plan should show the depth and length of sewer and water lines from the stub to the building. 2. The route of sewer and water lines including ties, clean-outs, bends, etc. Also indicate the size and type of sewer pipe. 3. Show the route of all private utilities, such as electric and gas. Revised: 6 -23 -98 1 ' 4. As -built information for storm sewer system, including invert and rim elevations, pipe size, type, location (omissions and additions). 5. Lot comer elevations. 6. Final floor elevations. 7. Topnut hydrant elevations, if any. A cash escrow in an amount established by resolution shall be paid before a building permit is issued ' for all new commercial construction. The fees are as follows: Lots less than 1 acre: $1,500.00 grading escrow 50.00 engineering fee (non - refundable) ' Lots larger than 1 acre: $5,000.00 grading escrow 250.00 engineering fee (non - refundable) ' The cash escrow shall e b returned to the permit applicant, without interest, upon successful completion of all of the following: ' 1 • Submit the as-built grading plan along with the request for release of escrow funds. ' 2. Written certification from a registered engineer or land surveyor that the grades and elevations are in conformance with the City approved grading plan and verification ' by a surveyor that permanent iron monuments are in place at each lot corner. 3. Turf must be established by the use of grass seed or sod on all lots within 30 days, ' excluding the time between October 1 st and May I st, of issuance of a Certificate of Occupancy. i ' 4. Water service curb box access cover at finished grade and curb box valve operable. If the escrow items are not completed within 30 days, excluding the time between October 1st and ' May lst of issuance of a Certificate of Occupancy, the City may enter the lot, perform the work, and apply the cash escrow toward the cost, plus administrative fees. ' If at any time a city inspection indicates erosion, storm water or grading problems are present on the site, the owner will be notified of the problem, given direction on possible corrective actions, and ' will have 48 hours to complete corrective measures. If the owner fails to comply, the City may enter the site to make the corrections and charge all costs of doing so against the escrow. ' In addition to the cash escrow, an escrow administration fee in an amount established by resolution shall be paid before a permit is issued for all permits requiring escrow per Ordinance Section. 'Revised: 6-23-98