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The total estimated cost for Option 2, including contingency and indirect costs, is shown in Table 2 along with the O&M costs over a 20 year life cycle. A detailed cost estimate for Option 2 can be found in Appendix D. Table 2: Option 2 Estimated Costs Estimated Capital Cost Finance Cost (4% Interest) Estimated 20-Year O&M Cost (3.5% Inflation Rate) 20-Year Cost of Purchasing/ Producing Water Estimated Total 20-Year Cost $7,115,600 $3,356,000 $2,812,300 $4,954,000 $18,237,900 3.3 Option 3: Purchase Water from Minneapolis Water The third option analyzed was to purchase water on a wholesale basis and receive treated water directly from Minneapolis Water through a connection to the City's water distribution system. Description Minneapolis Water treats water supplied from the Mississippi River and distributes drinking water to the City of Minneapolis and other surrounding communities. This is a very large and complex water system that dates back to 1867. The main treatment processes include filtration, disinfection, sedimentation, and filtration. Minneapolis produces an average of 57 million gallons per day. Minneapolis Water Pipeline 16 runs from the Hilltop Reservoir along the western border of St. Anthony Village. This watermain has a capacity of over 40,000 gallons per minute (gpm) according to Minneapolis Water staff. This pipeline can be connected to the City of St. Anthony’s water system to meet the City’s water demands. An interconnection to Minneapolis Water would need to provide adequate fire protection and meet the City’s maximum day demands. The City’s hydraulic grade line (HGL) and existing elevated water tower is at least 40 feet higher than the available HGL in the Minneapolis water distribution system at the interconnection point during static conditions. The City’s existing water distribution system is not sized to transmit adequate flow rates from the Minneapolis water distribution system to the City’s elevated water tower. Therefore, two water booster stations and two 20-inch wat ermains would need to be constructed from interconnection points with Minneapolis Water to St. Anthony Village’s water tower to provide system redundancy in the event that one booster station failed or one watermain experienced a break. One watermain would run from the corner of Stinson Boulevard NE along Kenzie Terrace and north along Silver Lake Road to the water tower at a length of approximately 8,100-feet. The second watermain would run from the corner of Stinson Boulevard NE 1,4-DIOXANE PROJECT FEASIBILITY REPORT CITY OF ST. ANTHONY VILLAGE WSB PROJECT NO. 3183-00 PAGE 9