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• <br /> OSTP Design Summary Worksheet UNIVERSITY , <br /> Minnesota Pollution OF MINNESOTA <br /> Control Agency <br /> At-Grade Design Summary <br /> Absorption Bed Width ft Absorption Bed Length ft System Height ft <br /> Absorption Bed Area ft2 Upslope Berm Width ft Downslope Berm Width ft <br /> Endslope Berm Width ft System Length ft System Width ft <br /> Level Pressure Distribution Summary <br /> No.of Perforated Laterals 3 Perforation Spacing 3 ft Perforation Diameter 7/32 in <br /> Lateral Diameter 2.00 in Supply Pipe Diameter 2.00 in Minimum Dose Volume 0 gal <br /> Flow Rate 36.0 GPM Total Head 20 ft Maximum Dose Volume 187.5 gal <br /> 5_ Additional Info for Type IV/Pretreatment Design <br /> A. Calculate the organic loading using option 1 or 2 <br /> 1. Organic Loading =Pounds of BOD X Units <br /> lbs/day X = lbs BOD/day <br /> 2. Organic Loading to Pretreatment Unit =Design Flow X Estimated BOO 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 /> B. Type of Pretreatment Unit Being Installed: <br /> C. Calculate Soil Treatment System Organic Loading: lbs.BOD/day=Bottom Area =lbs/day/ft2 <br /> lbs/day: ft2= lbs/day/ft2 <br /> Comments/Special Design Considerations: <br /> I hereby certify that I have completed this work in accordance with all applicable ordinances, rules and laws. <br /> Joseph J Olson 810 09/27/13 <br /> (Designer) (Signature) (License#) (Date) <br />