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I 1 4 <br />1.4 Wastewater System Cost of Service: <br />1.4.1 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 gallons <br />per month. <br />8000 <br />7000 <br />6000 <br />5000 <br />Gallons per Month 4000 <br />3000 <br />2000 <br />1000 <br />0 <br />A <br />Base Flow <br />0.951 gal/mo/sq ft <br />Intercept, <br />3,946 <br />Gal. /Month <br />0.032 <br />Gal. / Day (GPD) <br />132 <br />--30 day month -- <br />$0,1121 <br />Cost per Gal/Day <br />$3.5030 <br />Base Charge = <br />$462.40 <br />GPD Y Cost per Gal. <br />0 816 1585 2382 3280 <br />Total A re a Living Sp ace <br />Projected <br />Sampled Actual Data <br />Slope <br />0.951 gal/mo/sq ft <br />Days per Month <br />30 <br />Slope / 30 Days <br />0.032 <br />Cost per Gal/Day <br />$3.5030 <br />Cost per sq ft <br />Daily usage factor x Cost per <br />Gal. <br />$0,1121 <br />The implementation of this rate structure results in each new single family dwelling being charged <br />a local wastewater SDC that is comprised of a base rate of $462.40 plus an additional charge of <br />$0.1121 applied to the total proposed living space area of the dwelling. <br />City of Eugene SDC Methodologies Fee Schedule & Formulas, Page F-3 <br />Exhibit A to Administrative Order No. 58-17-19-F -- Page 18 of 22 <br />