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r-___�_.__�.__.._ <br /> Project: WASH. FEDERAL 5.4VINGS BANK <br /> Lecation: 10414- 19TH AVE SE <br /> Reveiwe� KB <br />� Drainage Basin silver lal:e <br />�I Pre-Development Design Storrn (yr�: 10 <br />� Post-Development Design Stoim (yr�: 25 <br />� Area o`Site (acJ: 0.56 <br />� Existing Slope of Site ��o►: 5.00 <br /> Existing Ground Cover <br /> Woods/Forest (ac�: 0.07 0.21000 0.01470 <br /> Lawns/Landscaping (ac�: 0.40 0.4100C 0.16400 <br /> Earfh/Gravel (ac�: 0.02 O.S60C0 0.01720 <br /> Impervious (ac): 0.07 i.40000 0.09800 <br /> Total Site Runoff: 0.29 <br /> Existing Run-off (cfs/ac� 0.52482 <br /> Proposed Ground Cover <br /> Lawns/Landscaping (ac): 0.22 <br /> Earth/Gravel �ac): 0.00 <br /> Impervious (ac�: 0.34 <br /> Detention Storage Required <br /> Lawns/Landscaping �cf/ac): 0.00 <br /> Ear1h/Gravel �cf/ac): 589•77 <br /> ' Impervious �cf/ac�: 1241.15 <br /> Total Detention Storage Required <br /> Lawns/Landscap�ng �cf�: N/A <br /> Earth/Gravel (cf): N/A <br /> Impervious �cf�: 421.99 <br /> Total Storage Required �cf�: 421.99 <br />