Laserfiche WebLink
Table 6-1.Additional Wells Necessary for the Conjunctive Use System. <br /> Additional Wells Additional Wells <br /> needed for 2040 needed after 2040 <br /> Community Conjunctive Use for Ultimate <br /> � Conjunctive Use <br /> Approach Approach <br /> Rogers 0 1 <br /> Ramsey 0 5 <br /> Dayton 2 10 <br /> Corcoran 2 12 <br /> 6.5 Blending <br /> Blending stations located in each distribution system would allow for suitable mixing of treated surface <br /> water with groundwater from municipal wells into the distribution systems. This applies to Rogers and <br /> Ramsey where several wells exist in close proximity to each other. <br /> New wells would also be located in the vicinity of the water treatment plant. The groundwater wells <br /> could be blended into the surface water ahead of the water treatment plant during periods of lower <br /> demand, or bypassed around the water treatment plant during periods of high demand. <br /> 6.6 Estimate of Probable Capital Cost <br /> The following tables provide capital costs for conjunctive use surface WTPs that would meet 2040 <br /> demands (12 MGD) and ultimate demands (40 MGD). The tables also include wells that would be <br /> needed to meet peak demands. <br /> Table 6-2.Concept Level Costs for a 12 MGD Conjunctive Use Surface WTP. <br /> Item Quantity Units Unit Cost Total Cost <br /> 12 MGD Surface WTP 1 Lump Sum $45,000,000 $45,0001000 <br /> River Intake 1 Lump Sum $2,000,000 $2,0007000 <br /> 30" Raw Watermai n 7,500 Feet $450 $3,375,000 <br /> Road Crossing 400 Feet $4,000 $17 600,000 <br /> Additional Wells 4 Each $17500,000 $6,0007000 <br /> Blending Stations 4 Each $1,5001000 $6,0007000 <br /> Easements/ Land 10 Acres $100 000 $1 000 000 <br /> Acquisitions ' <br /> Environmental 2 Miles $50,000 $100)000 <br /> L Subtotal $659100,000 <br /> Contingency (30%) $1915001000 <br /> Eng/Admin/Legal (20%) $1659003000 <br /> Total $102,000,000 <br /> Table 6-3 provides a concept level cost estimate for a 28 MGD expansion of the 12 MGD surface WTP <br /> to bring the capacity to 40 MGD. Although it is presented as one large expansion, it is likely that the <br /> expansion would take place over multiple steps. Table 6-3 presents costs in 2020 dollars. <br /> Page—29 1 METROPOLITAN COUNCIL <br />