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LID TREATMENT CONTROL: <br /> BIORETENTION (L-1) <br /> UNIQUE ID: <br /> /A separate worksheet must be completed for each bioretention within the proposed development project(e.g., 3 bioretention areas proposed=3 <br /> separate bioretention worksheets; one for each bioretention).Copy this spreadsheet as many times as necessary to accommodate all the <br /> bioretention areas in the project.To copy this spreadsheet, simply right click on the tab,select"Move or Copy",then Select"Bioretention(L-1)", <br /> check the"Create a Copy"box,and hit OK. <br /> BIORETENTION WITH SUBSURFACE DRAIN PIPE (Required for C and D soils) <br /> Desi n Parameter Criteria Notes <br /> 1. Ponding Zone <br /> a. Depth of ponding zone,ft(DPz) 1.0 <br /> b. Area of ponding zone,ft2(APz) 32566.0 <br /> 2. Plantina Media Layer <br /> a. Depth of planting media layer,ft(DPM) 1.5 <br /> b. Area of planting media layer,ft2(APM) 32566.0 <br /> 3. Gravel Zone <br /> a. Depth of gravel below pipe,ft(DGz) 2.0 Minimum depth below pipe=6 in <br /> b. Area of gravel below pipe,fe(AGz) 32566.0 Minimum width of gravel=3 ft <br /> 4.Volume Reduction,ft3(VOlreductim) -Volume reduction achieved by Bioretention with subsurface drain pipe <br /> _(DPz x APz x 0.25)+ 32566.0 Infiltration allowance for water in ponding zone water=0.25 <br /> (DPM x APM x 0.1)+ Available Water Holding Capacity of planting media layer=0.1 x volume <br /> (DGz x AGz x 0.3) Porosity of gravel zone=0.30 <br /> BIORETENTION WITHOUT SUBSURFACE DRAIN PIPE(Recommended for A and B soils) <br /> Desicin Parameter Criteria Notes <br /> 1. Ponding Zone <br /> a. Depth of ponding zone,ft(DPz) <br /> b. Area of ponding zone,fe(APz) <br /> 2. Planting Media Layer Available Water Holding Capacity of planting media layer=0.1 x volume <br /> a. Depth of planting media layer,ft(DPM) Minimum depth=18 inches <br /> b. Area of planting media layer,fe(APM) <br /> 3. Volume Reduction,ft3(Volreduction) -Volume reduction achieved by Bioretention with subsurface drain pipe <br /> 0.0 -Infiltration allowance for water in ponding zone water= 1.0 <br /> _(DPz x APz x 1)+(DPM x APM x 0.10) -Available Water Holding Capacity of planting media layer=0.1 x volume <br />