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4. Tributary Area <br />Assume the area of the site= 91,050 or 2.O�ss. <br />5. Allowable Release Rate <br />0(allow)= 0.116 x 1.6 x 2.09 by <br />ti <br />0(allow)= 0.388 0 <br />0 <br />6. Design Storm <br />Because the site is not in the combined sewer area. Assume a 25 <br />year storm. <br />7. Peak Storage Time <br />t- -25 + 2706/(0.368/C2.09 X 0.657>) <br />t= 72.86 minutes 4 �i�b`� <br />8. Storage Volume Factor <br />V(s)- (((4329 X 72.86)/(72.86 + 25)) - 40 X t0 <br />a-457*) <br />V(s)= 3212 cubic feet per acre of impervious surface. A� <br />VOI <br />r <br />w� <br />9. Site Storage Volume / <br />.Di VOI <br />V(t)- 021 X 2.09 X 0.657 <br />V(t)= 4410.5 cubic feet <br />Kelly Robinson 10-26-83 <br />I <br />