Revised Stormwater Management Report

{Project Name Description Analysis Date BMP or LID Type ighlands 05/31/24 ¢ ut Param t Zone Water capacity Calculated neters [Recharge Design Parameter Symbol Val Parameter Symbol Value Unit Parameter Unit Empty Portion BMP Area ‘ABMP sq.ft lof RWC under Post) | ERWC | 0.39 in jneieg'ot Rumer Qdesion | 0.41 Jin to capture Natural Recharge. |BMP Effective Depth, IERWC Modified to inches of Raint this is the design variable | TMP in consider dEXC EDRWG' Oo to capture Pdesian [sues Upper level of the BMP Empty Portion surface (negative if above | dBMPu in Jof RWC under In RERwc | 0.00 posi ovens 21.8 jin ground) BMP. va. over Imp. Area ae Depth of lower surface of Runoff Captured EMP, must be>=daMPu_| XC in JAvg. over imp. Area ae" |Post-development Land Segment Location of BMP SegBMP lunitiess Input Zero if Location is distibuted Jor undetermined /BMECalculs S_ |ABMP/Aimp satisfy Annual Recharge IBMP Volume dBMP Check—> OK ina R prmane dEXC Check-—> OK Post-D Deficit Recharge (or desired recharge Vet cut pease BMP Rechare volume) folume BMP Location—> Location is selected as distributed or undetermined Post-D Impervious Area Aimp cil Avg BMP Recharge 100.0% eee la | (or target Impervious Area) Efficiency Rechaigea Root Zone Water Capacity | RWC 237 |in eRaintel, 78.5% : became Runoft UE len Pcosign is acourate only ater BMP dimensions are update to make rech volume= deft velume. The potion RWC Modified to , PaRunoff z consider dEXC lens eory|" infiltrated Cal Jot BMAP inttration prior to fing and the area occupied by BMP ara ignored in these cafcultions. Resuits are poRunoff ellmaticcrecine Grfactor 167 |rounits IRecharged Sel sensetive to dBMP, make sure dEMP selected is small enough fer BMAP to empty in less than 3 dys, For land JAverage Annual P Pav 49.0 |in eeRalital 3.4% os ‘a é Recharged al [Segment Location of BMP if you select “impervious areas" RWC will be minimal but not zero as determined by Recharge Requirement a By, lover Imp. Area . the soi ype and a shallow rot zone for this Land Cover allowing consideration of lateral fow and other losses. How to solve for different recharge volumes: By default the spreadsheet assigns the values of total deficit recharge volume “Vdet" and tolal proposed impervious area "Aimp” from the "Annual Recharge” sheet to "VdeF' and "Aimp" on this page. This allows solution for a single BMP to handle the

f total deficit recharge volume “Vdet" and tolal proposed impervious area "Aimp” from the "Annual Recharge” sheet to "VdeF' 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 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 Vder & Aimp" button.