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r <br />CALCULATION SHEET <br />REST OF THE REFIIBE BELT <br />Runoff Volume <br />Area =0.66 Ac. <br />CN = 90 <br />10 yr. 24 hr. Storm = 2.9 inches <br />Runoff = 1.89 inches <br />1.89 inches f 0.66 acres • i foot/12 inches = 0.104 Ac/ft <br />Containment Area sizing <br />0.104 Ac/ft • 43.560 ft^2 = 4,528 ft^3 <br />Acre <br />Runoff Volume 0.104 Ac/ft <br />Sediment storage <br />and Freeboard 0.078 Ac/ft <br />TOTAL =_> 0.182 AC/ft <br />The containment area will be triangular in shape with 60 feet wide <br />by 66 feet long with an average depth of 4.0 feet for a total area <br />of 7,920 cubic feet. If topographical conditions are not suitable <br />for this configuration the pond will be configured to hold at least <br />0.18 Ac/ft as a minimum. <br />Ditch Sizing <br />All runoff that enters this pond is from direct runoff down the <br />side elopes and from direct precipitation. Ditches are not required <br />or present for this small area eaimtion. <br />