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City Council Agenda Packet 05-23-2022 SpecialAGENDA MONTICELLO CITY COUNCIL CLOSED AND SPECIAL MEETING Monday, May 23, 2022 — 5:00 p.m. Monticello Community Center Call to Order 2. 5:00 p.m. Discussion on Wright County Sheriff's Office Contract 3. 5:30 p.m. Water Treatment Feasibility Study 4. Adjournment ZZ —7 \1 wo 4000 ----------- I 1 2022 $84.20 $1,598,116 2023 $86.75 $1,646,515 2024" $91.00* $1,731,912 2025 $95.50* $1,812,590 2026 $100.25* $1,902,745 $1,741,506 $1,831,830 $1,917,163 $2,012,519 $1,899,825 $1,998,360 $2,091,450 $2,195,475 2022 $84.20 Jan — Dec: 52 $1,598,116 2023 $86.75 Full Year - 60 $1,899,825 2024" $91.00* Full Year - 60 $1,998,360 2025 $95.50* Full Year - 60 $2,091,450 2026 $100.25* Full Year - 65 $2,378,431 18.9% 5.2% 4.7% 13.7% 2022 $84.20 Jan — Dec: 52 $1,598,116 2023 $86.75 Full Year - 55 $1,741,506 2024" $91.00* Full Year - 60 $1,998,360 2025 $95.50* Full Year - 60 $2,091,450 2026 $100.25* Full Year - 65 $2,378,431 9.0% 14.7 4.7% 13.7 wsb� Water Treatment Feasibility Study for the City of Monticello Grec,�Johnson and Ursinio Puga, PE Outline • Drinking Water Regulations & Background • Monticello's Water Quality Evaluation • Water Treatment Evaluation • Overview of Funding Options • Recommended Schedule • Questions 4 Contaminants that present a risk to humans 4 Establish Maximum Contaminant Limits 1 (MCLs) � �Water � Mandatory and Enforceable Ilk"k-kanulatin-rS Fr 0 Contaminants that are 1w 4 not health threatening ••- •-•• - (at_r supply systems 4 Establish guidelines for WaterPrinking Act aesthetic and physical effects > Non -mandatory and non - enforceable Monitoring Unregulated Contaminants • The EPA implements monitoring programs for unregulated contaminants • The monitoring program is known as Unregulated Contaminant Monitoring Rule (UCMR) • UCMR programs are completed in 5 -year cycles United States • The City of Monticello was included CAW AAgeir;aYnmentalProtection Search EPA.gov as part of UCMR4 (2017 — 2021 cycle) Envirommental Topics ,, Laws& Regulations Report a Iriolation 1-o About EPA Monitoring Unregulated Drinking Water Contaminants CONTACT US • Manganese was included as part of UCMR4 Monitoring Unregulated Fact Sheets about the Fourth Drinking Water Conta m Ina nts Ho me Unregulated Contaminant Abu utthe Unr ContamInant Monitoring Monitoring Rule (UCMR 4) Rule (UCMR) Meetings&Materials These fad sheets provide background informatbn and contaminantllst information about the fourth Unregulated Contaminant Monitoring Rule (UCMR4). Laboratory Approval Program UCMR4 Basic Information Fdct Sheet (pdf). (December 2016, 815-F-16-007) General background information for UCMR 4. Occurrence Data • UCMR 4Fart Sheet for Assessment Monitoringanotoxins(pdf)_(Decemher2016,815-F- eA.,�rt�„Qaaniii�cn,A�r� 1F-nnR1 UCMR4 — Manganese • Naturally occurring in groundwater, surface water, and food • Essential to human health in small amounts • Non -mandatory limit under Secondary Regulations Secondary Concentration: 0.05 milligrams per litter (mg/L) Effects on drinking water: black to brown color, black staining, and bitter metallic taste The MDH has stablished recommended health guidance values in drinking water Infants: 0.10 mg/L Children and adults: 0.30 mg/L Monticello's Raw Water Quality (1) AWWA Recommended Concentration - 150 mg/L as CaCO3 (2) Minnesota Department of Health Limit Primary Secondary Production Well Concentrations Blended Parameter Unit Limit Limit 1 2 3 4 5 Concentrations Total Iron mg/L - 0.300 - 0.097 0.785 0.333 0.285 0.256 Total mg/L - 0.050 0.693 0.720 0.810 0.769 0.435 0.664 Manganese HardnessM mg/L as _ _ 323 296 303 313 326 314 CaCO3 Combined pCi/L 4.9(2) - 0.75 1.46 4.97 0.63 0.27 1.1 Radium (1) AWWA Recommended Concentration - 150 mg/L as CaCO3 (2) Minnesota Department of Health Limit Is hardness in drinking water dangerous? • Water contains high amounts of calcium and magnesium • Defined as the capacity of the water to react with soap • Not considered a health risk • Can build up scale and cause staining of water fixtures and clothes • At-home water softener units remove hardness but generate chlorides 7 Available Water Treatment Methods Target Treatment Contaminants Methods Conventional Y G ravity Manganese, Iron, Biological Radium, and Filtration others Only Conventional Pre u re Biological Pros/Cons Effective and common technology Multi-level facility design Significant chemical savings Compact design and cheaper construction Reduced operational flexibility — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — - Lime Softening Effective and flexible technology with Filtration Large footprint and costly Manganese, Iron, Softening and Ion E4Lckange Effective Radium, Hardness Filtration with Flitration Large footprint and high residuals and others Reverse Effective, flexible and compact design Os><sis Costly and very high residuals Membranes Water Treatment Capacity Determination 10.0 9.0 8.0 ro 7.0 V 6.0 � 5.0 a� 0 4.0 CU 3.0 2.0 1.0 0.0 • • • 2020 2025 2030 2035 2040 2045 2050 2055 Date (yyyy) Firm Pumping Capacity Projected MDD Treatment Capacity Recommendation 9 Million of Gallons per Day (MGD) Capacity 2060 2065 2070 Proposed Location of Water Treatment Plant • Three preferred City -owned properties • Property No. 2 is recommended • New raw watermain will be needed to convey Wells 1, 2, and 5 to the water plant uw watermain from the existing wells w _inion pipes_ .and. Opinion of Probable Cost for 9 MGD Facility Item iGravityFiltration Conventional Biological Gravity Filtration Gravity Filtration with Lime Softening Capital Raw Watermain Costs $1,847,500 $1,847,500 $1,847,500 Capital Water Treatment Plant Costs $22,252,500 $23,112,500 $38,817,500 Sub -Total Capital Costs $24,100, 000 $24, 960, 000 $40.,665,,000 20 -Year Loan Cost 1.5% Loan Interest $3,974,445 $4,116,271 $6,704,608 Sub -Total Capital and Loan Costs $28,074,445 $29,076,271 $47,369,608 O&M Costs per Year $221,259 $181,777 $869,575 20 -Year O&M Costs 3.0% Inflation $5,945,000 $4,884,000 $233,366,000 TOTAL 20 -YEAR COST $3430193500 $3339613000 $7037367000 I Cost Comparison: +$58, 500 Recommendation Cheapest Option +$36, 775, 000 Centralized gravity filtration plant with flexibility to operate conventionally or biologically CITY Or' M04keflo -: Figure F2 Conceptual -i �y+ -- s - Site Plan Monticello WTP Feasibility Study City of Monticello L i }y. { Lie end VVTP Building Area for Future Expansion Public Works Garage r Conveys water from the filter basins to the reservoir by gravity 1 Backwash Tank Parking Lot and Driveway r t 1 { Conveys water from the reservoiI — —r — — — to the high service pumps 5tormwater Basin _ ;► 1' 1 { Existing Reservoir _ TY ' . Existing 0.76 MG Reservoir J Existing Production Well to be used as a clearwell for f the water treatment facility Existing Raw Waterrrain Existing Distribution Watermain F ��ME*� ---- Proposed Raw Watermain ——-ProposedFifterEffluentLine � — ^,--------r r Proposed Connecting Line ti-lr 7 V!+ ? --- Proposed WTP Effluent Line Parcels # .t # t � r r - � i r ci'`'. 7 ra� J rr . i - � - ' , 0 75 '� y s b .�,,,Feet %A - f e/ 4W, -AMA I rrc 75fwt ay.arr Ki -c - Public Works Garage, Generator & Electrical Rooms " T Filter Detention o Room Basin IE - jul 1� cFL. O L . E - 'n EHRILL T.LG 0 JJ ::: -{jEll�!14 T'1l L' 0 0 HLLL ❑ 1 3 0Lr �. h„” �- I I - -------------------------- - Area for o � a Fav a 0 I Future o `°;nM E D o Expansion HLLL I HL- 41E _L'Af3FFlki w !'J4 ❑ _ _ O 'TaT'rE �9C4 :. FE,El Chemical Rooms High Service Pumps CONCEPTUAL FLOOR PLAN C - IC Y' SC. -LE IN -ET Pl+N 6Y: CHECKS' CAG CIl CONCEPTUAL FLOOR PLAN SHEET Al jul 1� P, ANZI z S2 6 wLL r 1 3 CONCEPTUAL FLOOR PLAN SHEET Al Water Treatment Plant Renderings Water Treatment Plant Renderings (cont.) Architectural design should consider visibility from Interstate 94 Adjust Time of Day Adjust Position Along IH94 7401 Securing Funds • PFA Drinking Water Revolving Fund (DWRF) • Clean Water Fund 0".. I Infrastructure Bill • Infrastructure Investment and Jobs Act (IIJA) • Point Source Implementation Grant (PSIG) • Bonding Bill • Federal Earmarks Project approved for loan funding through DWRF Project may receive grant funding through IIJA P Recommended Implementation Schedule Recommended timeline to provide manganese -free drinking water by 2025 7�W Task Date Mailer/Flyer to Residents July 2022 Water Treatment Pilot Study August 2022 — November 2022 Water Treatment Plant Design and Bidding January 2023 —July 2023 Construction Contract Awarded by City Council August 2023 Water Treatment Plant Construction September 2023 — December 2024 Water Treatment Plant Startup January 2025 wsb THANK YOU! QUESTIONS?