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Home My WebLink About024 Sewer Demand Report BG Mill 8/4/2022 BG Mill Estimate of Peak Hour Sewer DemandAt Average Daily Wastewater Flow(in gallons per minute) , RESIDENTIAL Typical Residential Hours: 6 am— 10 pm '�,r • . 'L Number of Residential Dwelling Units: 18 du ' `ka�'�+��`` Using COB Design Standards Section V.B: Ave. Daily Flow Rate = 2.11 people/dwelling unit& 89 gal/capita/day Q Ave Res = 18 du. x 2.11 people/du x 89 gpcd = 3,380 qpd Average hourly flow shall be determined for a typical 16-hour day: Q Ave(Total) _ (3,380 gpd) + (16 hours per day x 60 min/hr) = 3.5 gpm Peak Wastewater Flow(in gallons per minute) POPULATION Residential: 2.11 people/du x 18 du = 38 residents PEAKING FACTOR Using COB Design Standards Section V.B.6: Peaking Factor = Q Max' Q Ave _ [18+(38/1000).5] _ [4+(38/1000)-5] = 18.19-4 19=4.34 Q Peak(Total) = 3.5 gpm x 4.34 = 15.2 gpm PROJECT INCREASE: Subtract Existing Commercial Use Flow Q Peak(Increase) = Q Peak(Total)- Q Ave(EAg Com)X PF = 15.2 gpm—{[((2,000 sf_200 sf/emp.) x 13 gpd per emp) _ (9 hr x 60min/hr)) x 4.341 = 15.2 gpm— 1.0 gpm = 14.2 gpm (Project Increase)