Revised Stormwater Management Report

[Project Name West Essex High! Recharg lands Description West Orange, Essex Parameters County Analysis Date 05/31/24 nParameters lover imp. Area Parameter Symbol Value Parameter Symbol Value Unit Parameter Symbol Value Unit Empty Portion inches of Runoff BMP Area BMP sq.ft lof RWC under Posto | ERWC 0.39 in ‘ia Qaesign | 0.17 fin Natural Recharge a BMP Effective Depth, ERWC Modified to Inches of Rainf ; this is the design variable_| CMP fe consider dEXC EORWG oe to capture Pdesign | 0.23. [in Upper level of the BMP lEmpty Portion surface (negative if above | dBMPu in lof RWC under Inf RERwc | 0.00 [in poonnae See 11.2 ground) BMP wo..ovetimpssArea es eo [Depth of lower surface of Runoff Captured BMP, mustbe>=dBmPu_| _S&XC en JAvg. over imp. Area ie |Post-development Land Segment Location of BMP : SegBMP less ut Zoro Location is distributed orundelermined Fi i i ABMP7Aimp ‘Aratio 0.16 —_[unilless Volume Balance-> Solve Problem to satisfy Annual Recharge ft BMP Check-—> OK — dEXC Check—> OK Post-D Deficit Recharge (or desired recharge Vet lout rene BMP esterase 30,461 Joutt volume) BMP Location--> Location is selected as distributed or undetermined Post-D Impervious Area Avg BMP Recharge Represents | target Impervious Area)| “i""P sat Etticienc OC Ca % Infatraticn | (or target Impervi icteney Recharged J , cRainfall Root Zone Water Capacity | _ RWC ae" became Runoff Es Pcosign is accurate only after BMP dimensiens are updsted to make rech vlume® defi vlume. The petion RWG Modified to eRunoff Iconsider dEXC DRWC [eos |" Infitrated BI I, ot xP inftation rior to fling andthe area occupied by BMP are ignored in hase leulsons. Results are PoRunoff etimatic Eector Cfector | 467 frounts IRecharged ee sensetive to eeMr, make sure EMP selected is small enough fo UP to empty i less than 3 days. Forland Rainfall Average: Annual F Fevg iS Recharged Tees Segment Location of BYP if you seteet“impenvous areas” RWC vile minimal bu nt zero as determined by Recharge Requirement i ren i 1 root zone tne scil type and a shal ion of lateral fow and other esses. is Land Cover allowing corsice! "\Vder" and “Aimp" 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 this page. This allows solution for a single BMP

he spreadsheet assigns the values of total deficit recharge volume "Vdef" and total proposed impervious area “Aimp” from the "Annual Recharge” Sheet to 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 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.