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Spensa Dev. Group <br /> Proj No. 11586 <br /> 2687 Wayzata Blvd, Orono, MN <br /> Storm Water Runoff Analysis* <br /> October 29, 2009 <br /> Volume Discharge Summary (Acre-FT) <br /> ac-ft ac-ft <br /> 2-(2.8" 0.16 0.05 <br /> 10-(4.2') 0.29 0.16 <br /> 100-(6.0') 0.45 0.31 <br /> Rate Discharge Summary (Cu. Ft. per Second) <br /> s���itQT/l? ilbf TeteTeV9e `sltl. <br /> cfs cfs <br /> 2-(2.8') 2.74 0.50 <br /> 10-(4.2') 4.68 2.55 <br /> 100-(6.0') 7.17 6.21 <br /> *Runoff design criteria based on City approvals of maintaining or decreasing <br /> water runoff volumes and rates leaving the southeasterly area of site. <br /> *Rain garden overflow spillway constructed of grouted rip rap. 5 ft wide by 2 ft <br /> in depth. <br /> High Water Level Summary <br /> ae$tgri storm �ti �$�1 <br /> siren :-err). ?�pT�ap 'J/�err <br /> 2-(2.6') 1021.2 <br /> 10-(4.2') 1021.5 <br /> 100-(6.0') 1021.7 <br /> ZADocs 11 500\1 1586 Orono Bldg-Spensa\DRAINAGE\6-17-09 SWMP\10-28-09 RUNOFF Comparison riprap.xlsx <br />