20070193 Ver 1_Worksheets_20070430

Project Name: Wake Med Apex Healthplex
Project No. DWQ 07-0193
SUBMITTED DESIGN: REQUIRED DESIGN
elevations
Permanent Pool (ft) 382
Temporary Pool (ft) 385.5 3.5 ft. depth
areas
Permanent Pool SA (sq ft) 11487 11479 sq. ft.
Drainage Area (ac) 7.2
Impervious Area (ac) 5.2 72.2
Forebay (ft2) 1741 15.156264
High Marsh (ft2) 4032 35.1
Low Marsh (ft2) 4013 34.9
Micropool (ft2) 1701 14.808044
100
volumes
Temporary Pool (cu ft) 19046 18295 cu. ft.
other parameters
SA/DA 3.66 74.69
Orifice Diameter (in) 2 0.14 cfs drawdown
Design Rainfall (in) 1 1.6 day drawdown
Lam.
Linear Interpolation of Correct SA/DA
Im ervious
Next Lowest 1.73
Project Impervious 72.2
Next Highest 2.06
0 ft. Permanent Pool Depth
SA/DA from Table
2.06
74.69
2.4

ok
ok
ok
ok
ok
ok
ok
check drawc
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Project Name: Wake Med Apex Healthplex
Project No. DWQ 07-0193 ~I3~J~1
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Pond No. ,
SUBMITTED DESIGN: REQUIRED DESIGN:
elevations 4.4 average depth status
Bottom of Basin (ft) 403
Permanent Pool (ft) 410 7 ft. depth check depth
Temporary Pool (ft) 412.25 2.25 ft. depth ok
areas _ ~
Permanent Pool SA (sq ft) 40075 40086 sq. ft. check surfac
Drainage Area (ac) 24.54
Impervious Area (ac) 18.97 77.3 % -
volumes
Permanent Pool (cu ft) 176134
Temporary Pool (cu ft) 183949 66429 cu. ft. ok
Forebay (cu ft) 36635 20.8 % ok
other parameters
SA/DA 3.75 3.75 -
Orifice Diameter (in) 3 0.25 cfs drawdown -
Design Rainfall (in) 1 8.5 day drawdown check drawG
Linear Interpolation of Correct SA/DA
7 ft. Permanent Pool Depth
Im ervious SA/DA fron (Avg. Depth)
Next Lowest ~ 1.34 0.977271616 1.08
Project Impervious 77.3 3.75 #VALUE! #VALUE!
Next Highest 0 1.73 1.311467249 ' 1.43
3 ft 4