20071061 Ver 1_Worksheets_20070702

Project Name: Lowess
Project No. DWQ EXP07-1061
Pond A
SUBMITTED DESIGN:
elevations
Bottom of Basin (ft) 83
Permanent Pool (ft) 88
Temporary Pool (ft) 93
areas
Permanent Pool SA (sq ft) 18510
Drainage Area (ac) 8.07
Impervious Area (ac) 5.81
volumes
Permanent Pool (cu ft) 44776
Temporary Pool (cu ft) 288466
Forebay (cu ft) 11307
other parameters
SA/DA 5.14
Orifice Diameter (in) 5
Design Rainfall (in) 1
Linear Interpolation of Correct SA/DA
Im ervious
Next Lowest _ 70
Project Impervious 72.0
Next Highest 80
REQUIRED DESIGN:
2.4 average depth status
5 ft. depth ok
5 ft. depth ok
18067 sq. ft. ok
26216 based on avg depth check surfac
72.0 % -
20446 cu. ft. ok
25.3 % check forebc
5.14 -
1.04 cfs drawdown -
3.2 day drawdown ok
5 ft. Permanent Pool Depth
SA/DA fron (Avg. Depth)
0 7.277454349 1.08
5.14 7.45 1.15
5.7 8.180798487 1.43
3 ft 4

Project Name: Lowess
Project No. DWQ EXP07-1061
Pond B
SUBMITTED DESIGN.• REQUIRED DESIGN:
elevations 2.4 average depth status
Bottom of Basin (ft) 84
Permanent Pool (ft) 90 6 ft. depth ok
Temporary Pool (ft) 93.5 3.5 ft. depth ok

areas
Permanent Pool SA (sq ft) 10587 10102 sq. ft. ok
Drainage Area (ac) 5.3 14515 based on avg depth check surfac
Impervious Area (ac) 4.07 76.8 % -
volumes
Permanent Pool (cu ft) 25142
Temporary Pool (cu ft) 102616 14259 cu. ft. ok
Forebay (cu ft) 7080 28.2 % check forebc

other parameters
SA/DA 4.4 4.38 -
Orifice Diameter (in) 3 0.31 cfs drawdown -
Design Rainfall (in) 1 3.8 day drawdown ok
Linear Interpolation of Correct SA/DA
6 ft. Permanent Pool Depth
Im ervious SA/DA fron (Avg. Depth)
Next Lowest 70 3.9 5.663066024 1.08
Project Impervious 76.8 4.38 6.29 1.32
Next Highest 80 4.6 6.581886276 1.43
3 ft 4