20050732 Ver 02_Worksheets_20060724

Project Name: Briar Chapel
Project No. DWQ 050732
Pond 1
SUBMITTED DESIGN:
elevations
Bottom of Basin (ft) 404
Permanent Pool (ft) 410
Temporary Pool (ft) 413.5
areas
Permanent Pool SA (sq ft) 21749
Drainage Area (ac) 23.45
Impervious Area (ac) 8.94
volumes
Permanent Pool (cu ft) 93037
Temporary Pool (cu ft) 154937
Forebay (cu ft) 20326
other parameters
SA/DA 1:32
3
1
Linear Interpolation of Correct SAIDA***
Orifice Diameter (in)
Design Rainfall (in)
REQUIRED DESIGN:
4.3 `average depth status
6 ft. depth ok
3.5 ft. depth ok
13936 sq. ft. ok
13936 based on avg depth ok
38.1 % -
33463 cu. ft. ok
21.8 % ok
1.36 -
0.31 cfs drawdown -
.?--5:7-day di`fiivdown--=--'-----?--check dr'awG
% Impervious SA/DA fron (Avg. Depth)
6 ft. Permanent Pool Depth
Next Lowest 30 1.08 1.08 1.08
Project Impervious 38.1 1.36 1.36 1.36
Next Highest 40 1.43 1.43 1.43
? 3ft 4
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Project Name: Briar Chapel
Project No. DWQ 050732
Pond 2
SUBMITTED DESIGN:
REQUIRED DESIGN:
elevations 3.8 average depth status
Bottom of Basin (ft) 413
Permanent Pool (ft) 419.5 - 6.5 & depth. -I check depth
Temporary Pool (ft) 423.51 4.01 ft. depth ok
areas
Permanent Pool SA (sq ft)
25110
26174:-sq,-ft. -.:-
check surfac
Drainage Area (ac) _ 32.54 19294 based on avg depth ok
Impervious Area (ac) ; 14.28 43.9%
-

volumes
Permanent Pool (cu ft) 94656
Temporary Pool (cu ft) 214160 52559 cu. ft. ok
Forebay (cu ft) 18329 19.4 % ok
other parameters
SA/DA 1.62 1.85 -
Orifice Diameter (in) 3 0.33 cfs drawdown -
Design Rainfall (in) 1 I -7 4 _day.drawdown - check drawc.
Linear Interpolation of Correct SAIDA * * *
6.5 ft. Permanent Pool Depth
% Impervious SA/DA fron (Avg. Depth)
Next Lowest 40 +- 1.73 1.229725209 1.08
Project Impervious 43.9 1.85 1.36 1.22
Next Highest 50 2.03 1.568207885 1.43
3'ft 4
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Project Name: Briar Chapel
Project No. DWQ 050732
Pond 3
SUBMITTED DESIGN:
elevations
Bottom of Basin (ft) 426.5
Permanent Pool (ft) 433
Temporary Pool (ft) 435:07
areas
Permanent Pool SA (sq ft) 17411
Drainage Area (ac) 11.22
Impervious Area (ac) 4.04
volumes
Permanent Pool (cu ft) 60008
Temporary Pool (cu ft) 109621
Forebay (cu ft) 11799
other parameters
SA/DA 1.25
2
1
Linear Interpolation of Correct SAIDA
Orifice Diameter (in)
Design Rainfall (in)
REQUIRED DESIGN:
3.4 average depth status
6.5 ft, depth: :?- ? check depth
2.07 ft. depth ok
36.0%
6306 sq. ft. ok
6306 based on avg depth ok
-
15235 cu. ft. ok
19.7 % ok
1.29 -
0.11 cfs drawdown -
;11.9_ day..drawdown ...A check drawG
% Impervious SA/DA fron (Avg. Depth)
6.5 ft. Permanent Pool Depth
Next Lowest 30 1.08 1.08 1.08
Project Impervious 36.0 1.29 1.29 1.29
Next Highest 40 1.43 1.43 1.43
aft 4
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