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HomeMy WebLinkAbout07/17/2025 - Water Commission - SUPPLEMENTAL DOCUMENTS - Regular Meeting (2)Water Reclamation and Biosolids Master Plan July 2025 Kelly Wasserbach, PE, PMP Project Manager –Capital Projects Water Reclamation and Biosolids •3 Facilities •Last Master Plan was in 2017/2018. •Attempt to have a 5-year interval •Goal is to look to the future and prepare for future budgeting needs. •Future regulations •Service Area growth •Future capital needs •Decision-making processes included a OneWater approach by engaging stakeholders outside the Water Reclamation and Biosolids Program where appropriate. 2 Water Reclamation and Biosolids Program Capital Improvement Process 3 MASTER PLANS Project ID Conceptual Costs CAPITAL IMPROVEMENT PLAN Prioritization Levels of Service STRATEGIC FINANCIAL PLAN Rates Debt BUDGET OFFER Design FUTURE BUDGET OFFER Construction Drake Water Reclamation Facility (DWRF) •Rated for 23 million gallons per day (MGD) •Only facility to have the following: •Septage receiving •Preliminary Treatment •Solids handling including digesters and centrifuges •MagPrex 4 Mulberry Water Reclamation Facility (MWRF)5 •Rated for 6 MGD •Does not have solids handling. •Most industrial waste is treated at MWRF. •Some residents not on Fort Collins Water Utilities Service discharge to MWRF. Meadow Springs Ranch (MSR)6 •City of Fort Collins produces approximately 2,355 metric dry tons of biosolids per year (more than 579 semi-truck loads). •100% of Fort Collins Utilities biosolids are applied on the MSR. •Beneficial reuse of biosolids is innovative and a rare opportunity. 7Master Plan Findings: Condition Assessment *Assets include all MWRF and DWRF 8Master Plan Findings: Condition Assessment *Assets include all MWRF and DWRF 9Master Plan Findings: Current and Future State Flows and Loads •Infiltration and Inflow (I&I) are impacting the ability to accurately predict future flows. •Rain events show a rate of influent flow that is extreme. •Fort Collins Utilities has a higher gallon per capita per day (gpcpd) than other municipalities. •91 gpcpd compared to 70 gpcpd. Regulation 31 •Temperature •Phosphorus •Total Inorganic Nitrogen (TIN) •Chlorides 10Master Plan Findings: Future Regulations Fossil Creek Reservoir (COSPCP22) Cache la Poudre River Segment 12a (COSPCP12a)- DWRF Cache la Poudre River Segment 11 (COSPCP11b)-MWRF Designation •Use Protected •Reviewable •Reviewable Classification •Aquatic Life Warm 2 •Recreation E •Agriculture •Aquatic Life Warm 1 •Recreation E •Agriculture •Water Supply (effective 12/31/2025) •Aquatic Life Cold 1 •Recreation E •Agriculture •Water Supply limits, but not classification. 11Master Plan Findings: Treatment Alternatives Analysis Opportunities to meet Regulation 31 •Hydrocyclones •Intensification with attached growth •Tertiary Denitirification •When the time comes to implement these, an evaluation on the best technologies during design will be conducted. 12Master Plan Findings: Project Prioritization 13Master Plan Findings: Project Prioritization Including Headworks if all this work is done, the Water Reclamation Treatment and Biosolids program needs ~$140M 14Master Plan Findings: Estimated Costs Replacement/Renewal $287,510,000 New/Regulatory Needs $143,750,000 TOTAL OVER 20 YEARS $431,260,000 Big ticket items in first five years are: •Headworks •Blowers •Phase II Phosphorus Removal These are Class V estimates, meaning they are -30% to +50% accurate. •Market volatility •Technology development •Contractor availability *Accounts for anticipated needs for regulatory changes as well as replacement projects. This is the ideal number to keep the facility running well. Mulberry Water Reclamation Facility 15 •Evaluation of the site shows aging assets. •Discharge requirements are the strictest at MWRF. •Significant investment to keep it running. •Through planning process, started to ask the question whether MWRF should stay online? •Broader One Water implications •Staff is working on information gathering to answer this question. 16Questions