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i <br />tort -Development Calculations: <br />A. Impervious area = 0.14 acres x .75 <br />= 0.11 Ac <br />Peak runoff (See Table 5 10 yr @ 5.00/a slope) <br />= 1.40 cfs/Ac <br />Peak rate of runoff = 0.11 x 1.40 <br />= 0 15 cfs <br />B. Landscaped area = 0.14 Ac x 0.25 <br />= 0.04 Ac <br />Peak runoff (see Table 3 10 yr @ 5.0% slope) = <br />0.41 cfs/Ac <br />Peak rate of runoff = 0.04 x 0.41 = <br />0.02 cfs <br />Total Post -development Peak Rate of Runoff <br />= 0.15cfs + 0.02 cfs = <br />p.17 cfs <br />Detention Requirements: <br />Impervious: 0.15 cfs <br />Detention: (See Table 6) = 2873 CF/AC <br />. I I x 2873 _ <br />— 316 cf <br />Landscaped 0.02 cfs <br />Detention: (See Table 6) = 985 CF/AC <br />0.04 x 985 = 39 cf <br />355 cf <br />