1. What is the volume (cf) of a detention pond with: o Top elevation of 5.0 feet o Top dimensions of 150 feet by 150 feet o Bottom elevation of

0.0 feet o 5:1 H:V Sideslopes a. < 100,000 cf (b) 100,000 to 200,000 cf (c) 200,000 to 300,000 cf (d) >300,000 cf \text { Prismoidal formula }-V(c f)=0.333^{*} D Y^{*}\left[A 1+A 2+\left(A 1^{*} A 2\right)^{\wedge} 0.5\right] DY (ft) is the distance between A1 and A2 A1 (sf) is the area at surface 1 A2 (sf) is the area at surface 2