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Home My WebLink AboutCHERRY STREET COTTAGES - PDP - PDP160041 - SUBMITTAL DOCUMENTS - ROUND 2 - STORMWATER-RELATED DOCUMENTS (14)17-06-02_2-yr peak runoff_UD-Rational_Revised.xls, Weighted C 6/6/17, 8:33 AM Project Title: Catchment ID: Illustration Instructions: For each catchment subarea, enter values for A and C. Subarea Area Runoff Product ID acres Coeff. A C* CA input input input output A 1.01 0.08 0.08 Sum: 1.01 Sum: 0.08 Area-Weighted Runoff Coefficient (sum CA/sum A) = 0.08 *See sheet "Design Info" for inperviousness-based runoff coefficient values. Area-Weighting for Runoff Coefficient Calculation Gilmartin - Cherry Street: Pierce Subdivision A: On-Site