20060172 Ver 1_Worksheets_20060628

Project Name: Hope Valley Commons
Project No. DWQ 06-0172
Pond No.
SUBMITTED DESIGN: 1 REQUIRED DESIGN.•
6/28/2006
elevations 1.3 average depth status
Bottom of Basin (ft) 268
Permanent Pool (ft) 272 4 ft. depth ok
Temporary Pool (ft) 273.8 1.8 ft. depth ok

areas
Permanent Pool SA (sq ft) 33711 27634 sq. ft. ok
Drainage Area (ac) 24.49 51498 based on avg depth check surfac
Impervious Area (ac) 18.37 75.0 % -
volumes
Permanent Pool (cu ft) 44646
Temporary Pool (cu ft) 64940 64460 cu. ft. ok
Forebay (cu ft) 15251 34.2 % check forebc

other parameters
SA/DA 3.12 2.59 -
Orifice Diameter (in) 4 0.40 cfs drawdown -
Design Rainfall (in) 1 1.9 day drawdown check draws
Linear Interpolation of Correct SA/DA
4 ft. Permanent Pool Depth
Im ervious SA/DA fron (Avg. Depth)
Next Lowest 70 2.4 4.61182522 1.08
Project Impervious 75.0 2.59 4.83 1.26
Next Highest 80 2.78 5.042093975 1.43
aft 4

Project Name: Hope Valley Commons
Project No. DWQ 06-0172
Pond No.
SUBMITTED DESIGN.• 1 REQUIRED DESIGN:
6/28/2006
elevations '" 2'0 ;average depth status
Bottom of Basin (ft) 268
Permanent Pool (ft) 272 4 ft, depth ok
Temporary Pool (ft) 273.8 1.8 ft. depth ok

areas
Permanent Pool SA (sq ft) 42000 27634 sq. ft. ok
Drainage Area (ac) 24.49 41537 based on avg depth ok
Impervious Area (ac) 18.37 75.0 % -
volumes
Permanent Pool (cu ft) 85000
Temporary Pool (cu ft) 64940 64460 cu. ft. ok
Forebay (cu ft) 18000 21.2 % ok
other parameters
SA/DA 3.12 2.59 -
Orifice Diameter (in) 3.5 0.31 cfs drawdown -
Design Rainfall (in) 1 2.5 day drawdown ok
Linear Interpolation of Correct SA/DA
4 ft. Permanent Pool Depth
Im ervious SA/DA fron (Avg. Depth)
Next Lowest 70 2.4 3.688571429 1.08
Project Impervious 75.0 2.59 '~,' ~ ' ~''3.8~' 1.26
Next Highest 80 2.78 4.097857143 1.43
aft 4