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Home My WebLink About2024-09-12 UC Packet AGENDA UTILITIES COMMISSION MEETING SEPTEMBER 12, 2024 8:00 AM I. ROLL CALL II. APPROVAL OF MINUTES 1. June 13, 2024 Utilities Commission Meeting Minutes III. OPEN FORUM – the open forum allows the public to address the commission on subjects which are not a part of the meeting. Commission may take action, reply, or give direction to staff. Please limit your comments to 5 minutes or less. IV. NEW BUSINESS 2. Update on PFAS Treatment - no packet materials 3. 2024/2025 Utility Construction Update V. DIRECTOR/SUPERINTENDENT UPDATE 4. Monthly Pumping VI. COMMISSIONER ITEMS VII. ADJOURN 5. Next meeting date is October 10, 2024 UTILITIES COMMISSION MEETING June 13, 2024 8:00 A.M. Utilities Superintendent Benson called the meeting to order at 8:00 a.m. Present: Commissioners Hudak, Hutter, Whitcomb, Councilmember Polehna Absent: Chairman Speedling Staff: Utilities Superintendent Benson, Public Works Director Sanders APPROVAL OF MINUTES Possible approval of minutes of April 11, 2024 meeting Motion by Commissioner Hudak, seconded by Commissioner Hutter, to approve the minutes of the April 11, 2024 meeting. All in favor. OPEN FORUM There were no public comments. NEW BUSINESS Update on PFAS Public Works Director Sanders stated that Wells 6 and 10 exceed the new EPA standards for PFAS and Well 9 is close to the limits. The EPA has given the City until 2029 to get those wells up to the standards. The City voluntarily took Wells 6 and 10 out of service last spring. Well 9 only becomes active in summer when irrigation demand is high. TKDA is studying the following options, under a $100,000 grant from the MPA: interconnections, point of use filter systems, blending with existing wells, drilling new wells, and granular activated water treatment. Interconnection with Oak Park Heights was eliminated because OPH fluoridates but does not chlorinate their water. Interconnection with the Minnesota Correctional Facility was eliminated due to the distance. Whole home or point of use filters would not solve the problem because it would not treat the water at the source, plus it would be up to the property owner to change the filter. The option of blending was eliminated because the wells are so far apart. Drilling new wells was eliminated because of the presence of contamination in existing wells using the Jordan aquifer, the Mount Simon aquifer is protected by State law, and there is no other alternative. Leaving Wells 6 and 10 off would be acceptable, but if another well were to go down it could cause problems providing safe drinking water. The planned painting of the water tower this year has been put on hold to avoid any issue with pressure or supply throughout the City. The City would like to keep Well 9 available as an option, as it is still below the EPA threshold. Commissioner Hudak voiced concern that limits may be lowered again in the future. Commissioner Whitcomb asked if a centralized filtration system has been considered, and Mr. Sanders replied that could be studied. Currently the City is looking at short term solutions to get those wells back in service. The next option, GAC or granular activated carbon, is the best available technology, approved by both the Department of Health and EPA. It requires pressure vessels or gravity filters. For the City’s wells, a 2800 square feet, 30-40 feet tall building would be required. It would need to be close to a sanitary sewer system to drain the pre-treated water into the sanitary sewer system. The carbon needs to be changed out over time, is considered hazardous and has to be Utilities Commission Meeting June 13, 2024 Page 2 of 2 taken to a regulated site to be treated. Per TKDA, Well 6 would cost $9 million to treat, Well 9 would cost $8.8 million, and Well 10 would cost $12.2 million so the estimated cost for all three wells is about $30 million. Commissioner Hudak remarked that coal mines are waning in the US, and in 30-40 years, coal could be outrageously expensive and this would be a concern. Mr. Sanders continued that staff and TKDA agrees GAC is best option, so the City has applied for grants and is working with senators and representatives for funding. Staff will continue to provide updates in City newsletters and the website. Water Efficiency Rebate Update Mr. Sanders reported on the Met Council grant for property owners to get rebates on washing machines, toilets and smart controllers. Through seven quarters, the City has reimbursed 240 property owners $33,000 and there are already 40 applications for next quarter. The City has received $28,000 for 2024-2026. I&I Grant Program Mr. Sanders reported that the City got $59,000 from the Metropolitan Council to reduce inflow and infiltration into the sanitary sewer system. DIRECTOR/SUPERINTENDENT UPDATE Monthly Pumping Mr. Sanders reported the monthly gallons pumped: 59,039 million. COMMISSIONER ITEMS Mr. Benson noted there was a watermain break and valve break recently. There were no Commissioner items. UNFINISHED BUSINESS There was no unfinished business. ADJOURNMENT Motion by Commissioner Hudak, seconded by Commissioner Whitcomb, to adjourn. All in favor. The meeting was adjourned at 8:41 a.m. The next meeting date is July 11, 2024. Steve Speedling, Chair ATTEST: Shawn Sanders, Public Works Director MEMORANDUM To: Utilities Commission Members From: Shawn Sanders, Director of Public Works Date: September 12, 2024 Subject: Update of Utility Projects in the City Background The following is a list of utility construction projects in the City of Stillwater for 2024 and 2025. Projects on the list will be updated to the commission and new projects added as they made aware to the City. City Utility Projects- Ongoing • Maryknoll Lift Station - Scope includes replacing the Lift Station at Maryknoll at Oak Ridge Drive. The existing lift station is a wet well/dry well and would be replaced with a submersible pump. Contract has been awarded and construction to start in October 2024. • Downtown Manhole Rehabilitation Project. Project looks to eliminate I/I in sanitary manholes from Elm Street to Aiple Lift Station (30 Total). Project completed in 2024. • Water Tower Painting Project – Bids received and awarded in April. Project delayed until Spring 2025. Working with consultant to update radio/antennas to minimize disruption of SCADA prior to painting project. • Olive Street Garage – Construction of garage for storage of generator. Underway Completion estimated for this fall • 2024 Street Improvement Project-Addition of new watermain on Abbot Street west of Greeley Street to close a gap in the system. Completion this fall • Aiple Lift Station Generator Replacement. Completed. City Utility Projects for 2025 • Lift Station Upgrades are planned for Aiple, Rutherford and Rumpfs. • PFAS treatment Planning- The following list is the current and proposed developer projects with utility impacts • Sundance Stillwater- New multi-family residential development located on Boutwell Road. Construction to start in 2025 • Curve Crest Utility Project – Extension of sewer and water to serve the Lakeview Hospital Site and the Central Commons Development on the south side of TH 36. Utility plans are 60% complete. Looking to bid project this fall with a completion date of Summer of 2025. Million Gallons Pumped 2017 2018 2019 2020 2021 2022 2023 2024 Monthly Totals Monthly Totals Monthly Totals Monthly Totals Monthly Totals Monthly Totals Monthly Totals Monthly Totals January 47827 54174 47578 43126 44488 43203 40179 39803 February 42360 50969 42335 41409 39016 39417 37754 36509 March 43799 55676 47276 43148 41908 41176 39817 39566 April 45235 52580 45808 44003 41587 41248 40316 40928 May 56415 77250 57949 61400 66124 55346 66143 59039 June 84085 77502 78308 74342 112800 91793 120461 53259 July 93342 89533 78536 81984 110149 111197 101462 68671 August 75439 99896 78626 87645 93628 89626 99966 72813 September 74893 67085 61054 71455 64168 87366 86614 October 49115 48481 50054 52576 49781 59028 46495 November 41620 43112 43786 41754 40311 37840 38504 December 52404 46710 44426 42857 41322 40569 39214 Total 706534 762968 675736 685699 745282 737809 756925 410588 Jan ‐ Aug 488502 557580 476416 477057 549700 513006 546098 DNR Permited Amount 865,000,000 MGY