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TKDA <br />ENGINEERS • ARCHITECTS • PLANNERS <br />May 7, 2003 <br />Mr. James E. Studenski, P.E. <br />City Engineer <br />600 Town Center Parkway <br />Lino Lakes, Minnesota 55014 <br />Re: Preliminary Design Investigation <br />Century Farms Lift Station <br />City of Lino Lakes, Minnesota <br />TKDA Commission No. 12793 -01 <br />Dear Mr. Studenski: <br />1500 Piper Jaffrey Plaza <br />444 Cedar Street <br />Saint Paul, MN 55101 -2140 <br />(651) 292-4400 <br />(651) 292 -0083 Fax <br />www.tkda.com <br />The future lift station for Century Farms was analyzed for two conditions. The first being the Immediate <br />to Short Term Conditions; from now to 2007 when the 249 housing units of Century Farm's Development <br />are connected to the new lift station. <br />The second condition is for the Ultimate Service Area Condition. A maximum of 1,595 housing units can <br />be served by the New Century Farm's Lift Station (sometime after 2020). The maximum number of <br />housing units that can be developed for this case is limited by the capacity of the existing 15 -inch sanitary <br />sewer located south of the proposed lift station. <br />Immediate to Short Term Service Area Condition (2003 to 2007) <br />Service Area <br />Service area includes the Century Farms North Subdivision in which 249 housing units are planned to be <br />developed on approximately 100 acres by the end of 2007. <br />Average and Peak Design Flows <br />The following average and peak design flows were calculated using the "Ten State Standards for <br />Wastewater Facilities ": <br />Average Daily Flow ( *) = 47 gpm <br />Peaking Factor = 3.8 <br />Peak Design Flow = 180 gpm <br />( *) Average Daily Flow Rates were calculated by applying 274 gpd to each housing unit. <br />An Employee Owned Company Promoting Affirmative Action and Equal Opportunity <br />