Atlantic Packaging - Youngsville - NCDEQ BayFilter sizing Volume

Project Name:Date 6/27/2018
Location:
Site Designation:
SITE CONDITIONS
Rainfall Depth 1 in
Impervious Acreage 1.25 ac
Total Acreage 1.53 ac
Time of Concentration 6 min
I 81.7 %
Rv(Runoff Coefficient)0.79
WQv 4361 cf
75% WQv (Treatment Volume) 3271 cf
qu(Unit Peak Discharge)1000 csm/in From Type II Chart
Qp(Water Quality Storm)1.88 cfs
VOLUME BASED SIZING
Volume per cartridge 1250 CF
Cartridge Type 522
Min. Number of cartridge required 3
Cartridge Flow rate 11.25 gpm (0.25 gpm/SF)
System Flow Rate 0.08 cfs
Release time 16.1 hours
SEDIMENT BASED SIZING
Influent Concentration 70 mg/L
Annual Rainfall (P) 41.5 in
Annual Sediment Load 714 lbs
Pretreatment reduction 30%
Sediment Load to BayFilter 500 lbs
80% Capture Capacity 400 lbs
Cartridge Type 522
Sediment load per cartridge 131 lbs
Min. Number of cartridge required 4
Anticipated Maintenance Cycle 1.31 years (must be greater than 1 year)
FINAL DESIGN
Cartridge Type 522
Number of Cartridges 4
Precast Size 84" MH
Atlantic Packaging
Youngsville, NC
SWM1