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Architects, Inc. <br />Calculaticns for Allowable Discbaxge Rates <br />and required detention <br />Qrono Pool and dassroan Addition <br />Area of increased runoff <br />Runoff Coefficient <br />2.18 AC <br />0.59 <br />100 Year Storm Analysis <br />Duration Storm Storm Runoff Discharg^Stored Storage <br />Intensity Rate Rate Rate Volume <br />(Minutes)(HH)(CES)(CPS)(CPS)(CU.Ft.) <br />5 108 13.93 4.58 9.35 2080 <br />10 8.28 10.68 4.58 6.1 3660^ <br />405ivy157.04 9.08 4.58 4.5 <br />30 4.88 6.3 4.58 1.7 3087 <br />1. Max storage volume required 4051 cu.ft. <br />2. Rcesent conditions C « 0.33, E »22 min. <br />10 Year Storm <br />Duration Storm Storm Runoff Discharge Stored Steerage <br />Intensity Rate Rate Rate Volume <br />(Minutes)(HH)(CPS)(CPS)(CPS)(CU.Ft.) <br />5 7.2 9.29 2.35 6.94 2080 <br />10 5.6 7.22 .7.35 4.87 2925 <br />15 4.7 6.06 2.35 3.71 3342^ <br />3432^30 3.3 4.26 2.35 1.91 <br />60 1.9 2.45 2.35 0.10 363 <br />1. Hax storage volume required 3432 cu.ft. <br />North Plaza Building, 5217 Wayzata Boulevard, St Louis Park, Minnesota 55416 (612) 544-8941 <br />ft •%