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Pequot Lakes Facility Plan <br /> For <br /> Wastewater Treatment Facility(WWTF) Effluent Disposal Options <br /> Public Hearing <br /> January 6,2015,6:00 p.m. <br /> Pequot Lakes City Hall <br /> A3. Row Irrigation System <br /> Replace center pivot moving irrigators with a series of stationary row irrigators. <br /> It was not pursued in detail, but costs are anticipated to be closer to the above two options than <br /> other options. <br /> B. Rapid Infiltration Basins (RIB's) <br /> Remove the spray irrigation,sell the land west of the new highway, add additional aeration next <br /> to the stabilization basins,and construct six RIB's(each roughly 100 feet by 175 feet) on the east <br /> side of the new highway and south of the stabilization basins. <br /> Estimated initial project cost of$1.75 million (can fluctuate based on land sale price) <br /> C. Pipe to Pine River Area Sanitary District(PRASD) <br /> Remove the present WWTF, sell all the land,enter into a treatment agreement, and pipe the <br /> City's wastewater north a little over 9 miles to PRASD. <br /> Estimated initial project cost of$3.3 million (can fluctuate based on land sale price) <br /> D. Offsite Surface Disposal Options <br /> Instead of spray irrigation, pipe the discharge to nearby lakes or the Preserve Golf Course. <br /> Due to additional treatment and permit issues,these options were not pursued further. <br /> E. Subsurface Disposal <br /> Instead of spray irrigation,this would consist of a series of perforated underground piping on <br /> the present spray irrigation land. <br /> Due to additional treatment and permit issues,this option was not pursued further. <br /> Selected Alternative <br /> The lowest estimated present worth (includes 20 years of O&M)was A2—Spray Pivot Irrigators with <br /> Additional Land.The second lowest estimated present worth was B—RIB's. <br /> Mainly due to keeping all operations on the east side of the new highway,the City is pursuing the RIB's. <br /> Estimated Sewer Service Charges <br /> Terms and rates vary greatly across funding assistance agencies. <br /> $1.75 million,40 years, 3.5%, plus 5%debt service reserve=$85,850 per year. <br /> $85,850/25 million gallons per year $0.003434 per gallon. <br /> The average residential customer generates about 32,350 gallons per year,or 2,700 gallons per month. <br /> $0.003434 per gallon x 32,350 gallons per year=$111 per year,or about$9.25 per month. <br /> NOTE:This assumes no grants or up-front investment from City savings. <br /> Page 2 of 2 <br />