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• <br /> • <br /> OSTP Design Summary Worksheet UNIVERSITY <br /> Minnesota Pollution OF MINNESOTA <br /> Control Agency <br /> Pressure Distribution Summary <br /> Perforated Laterals 3 Perforation Spacing 3 ft Perforation Diameter 1/4 in <br /> Flow Rate 29 GPM Supply Pipe Diameter 2 in Total Head 18.9 ft <br /> 4. ORGANIC LOADING(if pretreatment is being used) <br /> Organic Loading to Pre-Treatment Unit =Design Flow X Estimated BOD in mg/L in the effluent X 8.35+1,000,000 <br /> gpd X mg/L X 8.35+1,000,000= ` Lbs BOD/day <br /> Calculate System Organic Loading: lbs.80D/day +Bottom Area =lbs/day/ft2 <br /> Lbs/day+ ft2= lbs/day/ft2 <br /> Comments/Spedai Design Considerations: <br /> I hereby certify that I have completed this work in accordance with alt applicable ordinances,rules and taws. <br /> Joseph J Olson 810 11/23/09 <br /> (Designer) (Signature) (License 8) (Date) <br />