Wedgefield Phase IV Subdivision - 1119P3 Runoff coefficient calcs

1162 Wedgefield Ph IIIStorm Water ControlSCS curve numberHydraulic Soil Group :AArea SCS CNBuilding (sf) 441,471 98(108 lots) Pavement (sf) 168,379 98 Open space (sf) 713,067 49 Offsite -open space (sf) 0 49 Offsite -impervious (sf) 0 98Total (sf)1322917 72Total (ac)30.37Rational CoefficientPredevelopmentPostdevelopmentArea C Area C Impervious (sf) 0 0.95 Building (sf) 441,471 0.95(108 lots) Open space (sf) 1,322,917 0.30 Pavement (sf) 168,379 0.95 Open space (sf) 713,067 0.30 Offsite -open space (sf) 0 0.30 Offsite -impervious (sf) 0 0.95Total (ac)1322917 0.30Total (ac)1322917 0.60Total (ac)30.37Total (ac)30.371119P3 Runoff coefficient calcs.xlsPrinted 7/2/2018