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Project: SNOHOMISH CO. PARKING LOT <br />Location: WALL AND ROCK. <br />Reveiwer: KB <br />Drainage Basin DOWN TOWN <br />Pre-Development Design Storm (yr�: <br />Post-Development Design Storm (yr): <br />Area of Site (ac�: <br />Existing Slope of Site (�): <br />Existing Ground Cover <br />Woods/Forest (ac�: <br />Lawns/Landscaping (ac�: <br />Earth/Gravel(ac): <br />Impervious (nc): <br />10 <br />25 <br />0.30 <br />5.00 <br />0.00 0.21000 <br />0.30 0.41000 <br />O.QO 0.86000 <br />0.00 1.40000 <br />Total Site Runoff: <br />Run-Off (cfs/ac) Using 1he 2" min. allowable orifice: <br />Proposed Ground Cover <br />Lawns/Landscaping �ac�: <br />Earth/Gravel(ac�: <br />Impervious (ac�: <br />Deiention Storage Required <br />Lawns/Landscaping (cf/ac�: <br />Earth/Gravel (cf/ac): <br />Irnpervious �cf/ac): <br />Total Detention Storage Required <br />Lawns/Landscaping (cfJ: <br />Earth/Gravel (cf�: <br />Impervious (cf�: <br />0.00 <br />897.78 <br />1572.33 <br />N/A <br />0.12300 <br />N/A <br />N/A <br />0.12 <br />0.43333 <br />N/A <br />N/A <br />471.70 <br />To1al Storage Required (cf): 471.70 <br />