Revised Stormwater Management Report

[Project Name West Essex Highlands ig Description West Orange, Essex Count Value Analysis Date rameters [Recharge Design Fa Symbol Parameter Parameter Empty Portion BMP Area ABMP lof RWC under Post-D | ERWC 0.39 |in Meee Qdesign | 2.49 Natural Recharge EMP Effective Depth, IERWC Modified to Inches of Rainfall this is the design variable | _SSMP consider dEXC EDRWG. otis)" to capture Pdesion [iaae ‘Upper level of the BMP Empty Portion ~ surface (negative ifabove | dBMPu lof RWC under inf, | RERWC | 0.00 |in mance lage 37.4 ground) BMP wg. over Imp. Area = = eo Depth of lower surface of Runoff Captured BMP, must be==aBMPu_ | EXC lAvg. over imp. Area ort jin Post-development Land [Segment Location of BMP | ; SegBMP input Zero it Location is dstibuted ev uncetermined E Volume Balance> Sol BMP Volume VeMP 2,600 Joust BMP Check—> OK a z 7 EXC Check—> OK Post-D Deficit Recharge (or desired recharge Ver cust BMP Recharge 49,877 lout volume) BMP Location» Location is selected as distributed or undetermined Represents 7 Fost-D Impervious Area Javg BMP Recharge 3 Aimp sq.ft 100.0% _|% Infitration (or target Impervious Area) Efficiency Rafeues | a Rainfall Root Zone Water Gapaciy’| RUC aaa" lbecame Runoff ghd Paesion is accurate ony after BMP éimensions are updated fo iske rach volume deft volume. The portion RWC Modiied to eoRunoff Z consider dEXC. RWG! Ci infiltrated Ganka Jot EMP intitration pir to fing and the area occupied by BMP are ignored in these calculations. Results are . eeRunoff eiiniatie soto’ C-factor AGT |rounits tRecharged 25% | sensetive to dBMP, make sure dEMP selected is small enough for BMP to empty ia tess than 3 days. Fer land Rainfall verge Annual Pavg a" lRecharged 2.0% Im [Segment Location of BMP if you select “impervious areas” RUVC wil be minimal but nt zero as determined by Recharge Requirement lover Imp. Area er getra |" ihe soi ype and a shetow rect zene for his Land Cover allowing oorsideration of How to solve for different recharge volumes: By default the spreadsheet assigns the values of total deficit recharge volume "VdeF and total proposed impervious area "Aimp” from the "Annual Recharge” sheet to "der" and "Aimp" on this page. This allows solution for a single BMP to handle the entire recharge requirement assuming the runoff from entire impervious area is available to the BMP. ‘To solve for a smaller BMP or a LID-IMP to

ge. This allows solution for a single BMP to handle the entire recharge requirement assuming the runoff from entire impervious area is available to the BMP. ‘To solve for a smaller BMP or a LID-IMP to recharge only part of the recharge requirement, set Vdef to your target value and Aimp to impervious area directly connected to your infiltration facility and then solve for |ABMP or dBMP. To go back to the default configuration clik the "Default Vdef & Aimp" button