20050578 Ver 1_Worksheets_20060227

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Project Name: pennybyrn
Project No. D~VQ OS-0578
Pond No.
SUBb11TlED DESIGN: 1 -east pond
2/27/2006
elevations
Bottotn of Basin (ft) 783
Permanent Pool (ft) 787
Temporary Pool (ft) 790.77
areas
Permanent Pool SA (sq ft) 5824
Drainage Area (ac) 6.22
Impervious Area (ac) 3.49
volumes
Permanent Pool (cu ft) 16514
Temporary Pool (cu ft) 19932
Forebay (cu ft) 3303
other parameters
SA/DA 1.91
Orifice Diameter (in) 1.75
Design Rainfall (in) 1
Linear Interpolation of Correct SA/DA***
Im ervious
Next Lowest 50
Project Impervious 56.1
Next Highest 60
REQUIRED DESIGN.•
_ :~.8 ,average depth status
4 ft. depth ok
3.77 ft. depth ok
5184 sq. ft. ok
5460 based on avg depth ok
56.1x% -
12531 cu. ft. ok
20.0 % ok
1.91 -
0.11 cfs drawdown -
2.1 day drawdown ok
4 ft. Permanent Pool Depth
SA/DA fron (Avg. Depth)
', 1.73 1.836919643 1.08
1.91 2.02 1.29
2.03 2.128695055 1.43
3 ft 4

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Project Name: pennybyrn
Project No. DWQ OS-0578
Pond No,
SUBMITTED DESIGN.• 2 -West pond REQUIRED DESIGN.•
2/27/2006
elevations 6.1; average depth status
Bottom of Basin (ft) 775
Pernanent Pool (ft) 784 9 ft. depth check dept/:
Temporary Pool (ft) 787 3 ft. depth ok
areas '
Permanent Pool SA (sq ft) 9560 9124 sq. ft. ok
Drainage Area (ac) 21.29 15381' based on avg depth check surfac
Impervious Area (ac) 11.4 53.5 % -
volumes
Pcrn~anent Pool (cu ft) 57961
Temporary Pool (cu ft) 42193 41108 cu. ft. ok
Forebay (cu ft) 12200 ' 21.0 % ok '~~
other parameters
SA/DA 0.98 0.98 -
Orifice Diameter (in) 2.75 0.24 cfs drawdown -
Design Rainfall (in) 1 2.0 day drawdown ok
Linear Interpolation of Correct SA/DA***
9 ft. Permanent Pool Depth
Im ervious SAIDA fron (Avg. Depth)
Next Lowest 50 0.92 1.410058577 1.0~
Project Impervious 53.5 0.98 1.66 1.20
Next Highest 60 ! 1.1 2.110745816 1.43
3 ft 4