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Home My WebLink About2022-03-10 Council Work Session Agenda PacketCouncil Work Session Agenda March 10, 2022 – 5:30 pm 1. Call to Order / Roll Call 2. Water Supply Planning Work In Progress Update 3. Unscheduled Items 4. Adjournment *Includes Materials - Materials relating to these agenda items can be found in the house agenda packet book located by the Council Chambers entrance, or online at the City’s website at www.corcoranmn.gov. HYBRID MEETING OPTION AVAILABLE The public is invited to attend the regular Council meetings at City Hall. Meeting Via Telephone/Other Electronic Means Call-in Instructions: +1 312 626 6799 US Enter Meeting ID: 890 7329 7602 Press *9 to speak during the Public Comment Sections in the meeting. Video Link and Instructions: https://us02web.zoom.us/j/89073297602 visit http://www.zoom.us and enter Meeting ID: 890 7329 7602 Participants can utilize the Raise Hand function to be recognized to speak during the Public Comment sections in the meeting. Participant video feeds will be muted. In-person comments will be received first, with the hybrid electronic means option following. For more information on options to provide public comment visit: www.corcoranmn.gov City of Corcoran Water Supply, Treatment & Storage Project Council Work Session #4 Agenda Status Updates Design Decision Recap Project Budget Update Chemical Cost Comparison WTP Renderings, 3D Model Project Lookahead, Schedule Status Updates • Water Tower Site, Trunk Main ◦Preliminary Soil Borings Complete • Geotechnical Report ◦Draft WTP Site Report Received • Public Works Engagement ◦Design Meeting #2 – 2/22/22 • Other Stakeholder Engagement ◦Planning, Safety – Site, chemi, WTP model – 2/16/22 ◦County – Site layout, access – 3/9/22 • Cost Estimates ◦WTP Options ◦Disinfection Chemical Options ◦Overall Project Cost Status Update Design Decisions Design Decisions – Council Input Decision #1 – Capacity • Discussed 2-cell (2.3 MGD) vs. 3-cell (3.5 MGD) WTP • Estimated Max Demand = 6MGD Cost Dependent Decision #2 – Treatment Process • Proceeding with Aerator in WTP Design Decision #3 – Disinfection Chemical • Chlorine Gas vs. Hypochlorite Solution Cost, Safety Dependent Decision #4 – Water Tower Volume • 750k Gal vs. 1M Gal Cost Dependent Land Use Guidance • Initial Construction • “The BOX” = 1.44 MGD • Future Build Out • Entire MUSA = 6 MGD *Note: The “Shoe” area is included in NE MUSA due to land elevation and pressure zone compared to SE Corcoran Project Budget Update Project Element Scope Tracking • Well #1 • No Scope Changes • Trunk Infrastructure • Additional raw WM to Well #2 • Water Treatment Plant • Treatment Capacity Increase – 1.4 MGD vs. 2.3, 3.5 MGD • Long-Term Planning • 2 vs. 3 Filter Cells • Architectural Finishes • Water Tower • Location – land cost, additional watermain length • Volume – 750k Gal vs. 1 MG • Type – Composite vs. Pedestal Market Volatility, Cost Escalation Well #1 • No Scope Changes • Cost Includes Well Pump to be bid in WTP Package • Cost escalation associated with steel casing 06/04/21 Construction Estimate = $350,000 Contingency 10% Final CRS Municipal Well $39,500 TOTAL Construction Engineering Estimated Cost $478,500 $29,000 $15,000 $395,000 Trunk Infrastructure • Additional raw WM to Well #2 ($200k) • Advantage to including now with other trunk infrastructure • Site Utilities shifted to WTP Cost Estimate 06/04/21 Construction Estimate = $1,400,000 Contingency 10% Prelim Final CRS $140,000 Engineering $30,000 $75,000 $50,000 TOTAL $1,695,000 Trunk Infrastructure Estimated Cost Construction $1,400,000 Water Treatment Plant • Treatment Capacity Increase – 1.4 MGD vs. 2.3/3.5 MGD • Long-Term Planning – Ultimate Capacity = 6 MGD • 2 vs. 3* Filter Cells – Time/Cost until WTP Expansion • Architectural Finishes – Base vs. Base+ vs. Premier 06/04/21 Construction Estimate = $5,500,000 (1.4 MGD) 2-Cell (2.3 MGD) 3-Cell (3.5 MGD) Base Architecture $7,400,000 $8,400,000 Architecture Adder $500,000 $600,000 Contingency 20%$1,580,000 $1,800,000 Prelim Final $300,000 $375,000 CRS $250,000 $300,000 $10,320,000 $11,765,000TOTAL Construction Engineering $290,000 WTP Water Tower • New site, additional watermain length • Steel price escalation 06/04/21 Construction Estimate = $3,000,000 (750k Gal) Composite Pedestal 750k Gal $3,500,000 $3,800,000 1M Gal $4,200,000 $5,200,000 Alternative Location Contingency 10% (750k Gal)$432,500 $462,500 10% (1M Gal)$502,500 $602,500 Prelim Final CRS $5,182,500 $5,512,500 $5,952,500 $7,052,500 Water Tower $250,000 Engineering Construction $825,000 $25,000 $150,000 750k Gal TOTAL 1M Gal TOTAL Project Budget Summary • “Base” vs. “Growth” Options Cost Summary Base* Growth** Municipal Well Trunk Infrastructure WTP (2.3 MGD) $10,320,000 $11,765,000 Water Tower $5,182,500 $5,952,500 Legal, Admin (3%) $530,280.00 $596,730.00 TOTAL $18,206,280 $20,487,730 *Base assumes 2-cell WTP, 750k gal composite tower **Growth assumes 3-cell WTP, 1M gal composite tower $1,695,000 $478,500 Project Budget Comparison - Base Market Volatility, Cost Escalation Then Now 6/4/2021 3/10/2022 Municipal Well $350,000 $395,000 $45,000 Trunk Infrastructure $1,400,000 $1,400,000 $0 WTP $5,500,000 $7,400,000 $1,900,000 WT $3,000,000 $4,325,000 $1,325,000 Eng, Legal, Admin $1,500,000 $1,994,280 $494,280 Architecture $500,000 $500,000 $0 Contingency $1,200,000 Inflation $800,000 TOTAL $14,250,000 $18,206,280 $3,956,280 $2,192,000 $192,000 DifferenceCost Comparison Project Budget Comparison - Growth Market Volatility, Cost Escalation Then Now 6/4/2021 3/10/2022 Municipal Well $350,000 $395,000 $45,000 Trunk Infrastructure $1,400,000 $1,400,000 $0 WTP $5,500,000 $8,400,000 $2,900,000 WT $3,000,000 $5,025,000 $2,025,000 Eng, Legal, Admin $1,500,000 $2,185,730 $685,730 Architecture $500,000 $600,000 $100,000 Contingency $1,200,000 Inflation $800,000 TOTAL $14,250,000 $20,487,730 $6,237,730 Cost Comparison Difference $2,482,000 $482,000 Financial Plan Update • Kevin to discuss overall budget relative to impacts on area charges Chemical Cost Comparison Chemical Cost Comparison • Revised based on Corcoran Test Well #1 Water Quality Chemical Chlorine Gas Hypochlorite Unit Cost $4/lb $6/gal Demand @ 2.3 MGD = 38 units/day Cost/day $152 $228 Annual Cost $55,480 $83,220 20-year Cost $1,109,600 $1,664,400 Difference System CAPEX $60,000 $40,000 Difference -$554,800 $20,000 WTP Renderings, 3D Model Project Lookahead, Schedule Project Lookahead, Schedule • Well • Bidding Spring 2022 • Construction Spring/Summer 2022 • Water Tower • Land acquisition • Determine volume, type discussion • Water Treatment Plant • Advance decisions on capacity, disinfection chemical • Complete preliminary design • Meet with MDH for preliminary review Project Lookahead, Schedule J F M A M J J A S O N D J F M A M J J A S O N D Pre-Design Design Well Construction Trunk Construction Preliminary Design Final Design Bidding Construction Post Construction Preliminary Design Final Design Bidding Construction 2023 Water Treatment Plant Well, Trunk Main Water Tower Project PhaseProject Element 2022