20060961 Ver 1_Worksheets_20070717

Project No. DWQ 06-0961
Project Name: 40/Wade
Bio-retention 1
SUBM/TTED DESIGN:
elevations
Permanent Pool (ft) 370
Temporary Pool (ft) 370.5
areas
Permanent Pool SA (sq ft) 8100
Drainage Area (ac) 4.29
Impervious Area (ac) 2.79
Rational C 0.7
Size % 0.5
volumes
REQUIRED DES/GN:
0.5 ft. depth
6541 sq. ft.
ac
65.0 % impervious
sand underdrain
Inlet Velocity 1 0 fps
Inlet Flow Depth 1.2 in
Depth to Ground Water 20 6 ft
Planting Soil Infiltration 1 0.52 in/hr
In-Situ Soil Infiltration 0.63 0.00 in/hr

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Project Name: 40Wade
Project No. DWQ 060961
SUBM/TTED DF,S/GN.
elevations
Permanent Pool (ft) 380.5
Temporary Pool (ft) 382
areas
Permanent Pool SA (sq ft) 20181
Drainage Area (ac) 17.46
Impervious Area (ac) 11.3
Forebay (ft2) 3028
High Marsh (ft2) 7063
Low Marsh (ft2) 7063
Micropool (ft2) 3027
volumes
Temporary Pool (cu ft)
32865
other parameters
SA/DA
Orifice Diameter (in)
Design Rainfall (in)
2.64
3
1
Linear Interpolation of Correct SA/DA
Im ervious
Next Lowest 60
Project Impervious 64.7
Next Highest 70
W/L 1
REQUIRED DESIGN.
3
1.5 ft. depth
19976 sq. ft.
64.7
15.004212
35.0
35.0
14.999257
100
40086 cu. ft.
2.63
0.20 cfs drawdown
1.9 day drawdown
3 ft. Permanent Pool Depth
SA/DA from Table
2.4
2.63
2.88
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