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i <br /> i <br /> EvCC <br /> I Topper <br /> Pro'ecl Lol Sheet <br /> J�b# 208221 7 <br /> � B JAS 1215l2008 <br /> � <br /> IBasin C85 25-yr <br /> Runoff <br /> I Rationat Melhod Calculations C= 0.727 coeHicient <br /> Peak <br /> Rainfall <br /> 1= 2.453 Inlensity <br /> I � � A= 02437 Drainage Basin (acres) <br /> r Storm Duration= 25 <br /> ICalculations <br /> forl <br /> I P= 3.05 <br /> Tc= 6.3 Time of Concentration <br /> aa= 2.66 <br /> Iba= 0.65 <br /> I <br /> � Notes and Assumptions: <br /> I From Chapter 3 of the KC Surface <br /> Waler Desi�n Manual <br /> I <br /> I <br /> I <br /> I <br /> �. S[ormwaler Site Plan O Q OQ <br /> Everett Community College � <br /> Topper Parking Lat 16 <br /> 208221.10 <br /> I �`� <br /> � <br />