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1.3 Wastewater System Cost of Service: <br />1.3.1 Local Wastewater System Cost of Service <br />Determination of Flow Estimation Formula for Residential Development <br />Graphical comparison of water consumption per month to square foot of living area results in a <br />slope of 0.951 gallons per month per square foot and a base flow per dwelling unit of 3,946 <br />gallons per month. <br />8000 <br />7000 <br />6000 <br />5000 <br />Gallons per Month 4000 <br />3000 <br />2000 <br />1000 <br />0 <br />Base Flow <br />Intercept, 3,946 <br />Gal. /Month <br />Gal. /Day (GPD) 132 <br />--30 day-month-- <br />Cost per Gal/Day $2.2572 <br />Base Charge = <br /> $297.92 <br />GPD x Cost per Gal. <br />0 816 1585 2382 3280 <br />Total Area Living Space <br />Projected <br />~ Sampled Actual Data <br />Slope 0.951 gal/mo/sq ft <br />Days. per Month 30 <br />Slope / 30 Days 0.032 <br />Cost per Gal/Day $2.2572 <br />Cost per sq ft = <br />Daily usage factorx Cost per <br />Gal. <br />$0.0722 <br />The implementation of this rate structure results in each new single family dwelling being <br />charged a local wastewater SDC that is comprised of a base rate of $297.92 plus an additional <br />charge of $0.0722 applied to the total proposed living space area of the dwelling. <br />City of Eugene SDC Methodologies Fee Schedule. & Formulas, Page F-3 <br />