20070503 Ver 2_Worksheets_20070531

Project No. DWQ EXP 07-0503
Project Name: E-22 School
Bio-retention 1
SUBMITTED DESIGN: REQUIRED DESIGN:
elevations
Permanent Pool (ft) 310 1 ft. depth
Temporary Pool (ft) 311
areas
Permanent Pool SA (sq ft)
20037
18401 sq. ft.
Drainage Area (ac) 14.32 ac
Impervious Area (ac) 5.67 39.6 % impervious
Rational C 0.59.
Size % 5 no sand underdrain
volumes
Inlet Velocity 6.5 0 fps
Inlet Flow Depth 6 in
Depth to Ground Water 6 6 ft
Planting Soil Infiltration 1.2 0.52 in/hr
In-Situ Soil Infiltration 0.5 0.00 in/hr

C~~
check depth
ok
check veloci
ok
ok
5~~,
G~

Project No. DWQ EXP 07-0503
Project Name: E-22 School
Bio-retention 2
SUBMITTED DESIGN: REQUIRED DESIGN:
elevations
Permanent Pool (ft) 322 1 ft. depth
Temporary Pool (ft) 323
areas
Permanent Pool SA (sq ft) 7396 4048 sq. ft.
Drainage Area (ac) 2.95 ac
Impervious Area (ac) 1.41< 47.8 % impervious
Rational C 0.63
Size % 5 no sand underdrain
volumes
Inlet Velocity 5.2 0 fps
Inlet Flow Depth 6 in
Depth to Ground Water 5 6 ft
Planting Soil Infiltration 1.2 0.52 in/hr
In-Situ Soil Infiltration 0.5 0.00 in/hr

check depth
ok
check veloci
ok
ok