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Home My WebLink About20051881 Ver 1_Worksheets_20051122Project Name: Piedmont Cr Project No. D~V Q OS-1881 Pond No. SUpMITIED DESIGN.• 1 REQUIRED DESIGN: 11 /22/2005 elevations 2.7; average depth status Bottom of Basin (ft) 837.5 Permanent Pool (ft) 843.5 6 ft. depth ok Temporary Pool (ft) 845.6 2.1 ft. depth ok areas Permanent Pool SA (sq ft) 9860 6654 sq. ft. ok Drainage Area (ac) 19.3 5019 based on avg depth ok Impervious Area (ac) 5.48 28.4 % - volumes Permanent Pool (cu ft) 26287 Temporary Pool (cu ft) 25276 21406 cu. ft. ok Forebay (cu ft) 5500 20.9 % ok other parameters SA/DA 1.06 0.79 - Orifice Diameter (in) 2 0.11 cfs drawdown - Design Rainfall (in) 1 2.7 day drawdown ok Linearlnterpolatlon of Correct SA/DA*** 6 ft. Permanent Pool Depth Im ervious SA/DA fron (Avg. Depth) Next Lowest 20 0.59 0.426351927 1.08 Project Impervious 28.4 0.79 0.60 1.37 Next Highest 30 0.83 0.629614604 1.43 3 ft 4 Project Name: Peidmont Cr Project No. D~VQ OS-1881 Pond No. SUBMITTED DESIGN.• 2 REQUIRED DESIGN.• 11/22/2005 elevations 2.9 average depth status Bottom of Basin (ft) 844.4 Permanent Pool (ft) 850.4 6 ft. depth ok Temporary Pool (ft) 852.3 1.9 ft. depth ok areas Permanent Pool SA (sq ft) 16763 10074 sq. ft. ok Drainage Area (ac) 16.5 9199 based o~i avg depth ok Impervious Area (ac) 8.88 53.8 % - volumes Permanent Pool (cu ft) 47921 Temporary Pool (cu ft) 36269 32006 cu. ft. ok Forcbay (cu ft) 9000 18.8 % ok other parameters SA/DA 1.06 1.40 - Orifice Diameter (in) 2.5 0.16 cfs drawdown - Design Rainfall (in) 1 2.6 day drawdown ok Linear Interpolatiai ojCorrect SA/DA 6 ft. Permanent Pool Depth Im erv~ous (Avg. Depth) Next Lowest 20 0.59 0.520780886 1.08 Project Impervious 53.8 1.40 1.28 2.26 Next Highest 30 0.83 0.745241902 1.43 3 ft 4 Project Name: Peidmont Cr Project No. DWQ OS-1881 Pond No. SUBMITTED DESIGN: 3 REQUIRED DESIGN: 11/22/2005 elevations 3.1 average depth status Bottom of Basin (ft) 843.5 Permanent Pool (ft) 849.5 6 ft. depth ok Temporary Pool (ft) 850.5 1 ft. depth ok areas Permanent Pool SA (sq ft) 28000 6720 sq. ft. ok Drainage Area (ac) 14.8 7272 based on avg depth ok Impervious Area (ac) 5.75 38.9 % - volumes Permanent Pool (cu ft) 87434 Temporary Pool (cu ft) 30540 21471 cu. ft. ok Forebay (cu ft) 17500 20.0 % ok other parameters SA/DA 1.69 1.04 - Orifice Diameter (in) 2.5 0.12 cfs drawdown - Design Rainfall (in) 1 3.0 day drawdown ok Linear Interpolation of Correct SA/DA 6 ft. Permanent Pool Depth Im ernous (Avg. Depth) Next Lowest 20 0.59 0.650095 1.08 Project Impervious 35.9 1.04 1.13 1.74 Next Highest 30 0.83 0.903585714 1.43 3 ft 4 Project Name: Peidmont Cr Project No. D~VQ OS-1881 Pond No. SUBMITTED DESIGN.• 4 REQUIRED DESIGN.• 11/22/2005 elevations 3.O average depth status Bottom of Basin (ft) 871.2 Permanent Pool (ft) 877.2 6 ft. depth ok Temporary Pool (ft) 878.8 1.6 ft. depth ok areas Permanent Pool SA (sq ft) 10000 5808 sq. ft. ok Drainage Area (ac) 13 5770 based on avg dept/r ok Impervious Area (ac) 4.96 38.2 % - volumes Permanent Pool (cu ft) 29903 Temporary Pool (cu ft) 22033 18564 cu. ft. oh Forebay (cu ft) 6000 20.1 % ok other parameters SA/DA 1.6 1.03 - Orifice Diameter (in) 2 0.09 cfs drawdown - Design Rainfall (in) 1 2.7 day drawdown ok Linear Interpolation of Correct SA/DA*** 6 ft. Permanent Pool Depth Im ervious (Avg. Depth) Next Lowest 20 0.59 0.585247 1.08 Project Impervious 38.2 1.03 1.02 1.72 Next Highest 30 0.83 0.82418 1.43 3 ft 4 Project Name: Piedmont Cr Project No. D~VQ OS-1881 Pond No. SUB~l1177'ED DESIGN: 2 REQUIRED DESIGN: 11/22/2005 elevations 2.9 average depth status Bottom of Basin (ft) 844.4 Permanent Pool (ft) 850.4 6 ft. depth ok Temporary Pool (ft) 852.3 1.9 ft. depth ok areas Permanent Pool SA (sq ft) 16763 10074 sq. ft. ok Drainage Area (ac) 16.5 9199; based on avg depth ok Impervious Area (ac) 8.88 53.8 % - vok~mes Permanent Pool (cu ft) 47921 Temporary Pool (cu ft) 36269 32006 cu. ft. ok Forebay (cu ft) 9000 18.8 % ok other parameters SA/DA 2.03 1.40 Orifice Diameter (in) 2 0.10 cfs drawdown - Design Rainfall (in) 1 4.1 day drawdown ok Linear Interpolation of Corr ect SA/DA*** 6 ft. Permanent Pool Depth Im ervious SA/DA fron (Avg. Depth) Next Lowest 20 0.59 0.520780886 1.08 Project Impervious 53.8 1.40 1.28 2 26 Next Highest 30 0.83 0.745241902 . 1.43 3 ft 4 Project No. DWQ Piemont Cr Project Name: OS-1881 SUpMITTED DESIGN.• B-1 11/22/2005 elevations Permanent Pool (ft) 841.5 Temporary Pool (ft) 842 areas Permanent Pool SA (sq ft) 4613 Drainage Area (ac) 2.7 Impervious Area (ac) 1.32 Rational C 0.65 Precipitation (in) 0.07 volumes REQUIRED DESIGN.• 0.5 ft. depth 375 sq. ft. ac 48.9 % impervious no sand underdrain Inlet Velocity 0.67 0 fps Inlet Flow Depth 3.7 in Depth to Ground lI'ater 6 6 ft Planting Soil Infiltration 1 0.52 in/hr In-Situ Soil Infiltration 0.27 0.00 in/hr ok ok ok ok ok Project No. D~VQ Piemont Cr Project Namc: OS-1881 SUBhII7TED DESIGN: B-2 11/22/2005 elevatiau Permanent Pool (ft) 851.5 Temporary Pool (ft) 852 areas Permanent Pool SA (sq ft) 4783 Drainage Area (ac) 2.8 Impervious Area (ac) 1.31 Rational C 0.65 Precipitation (in) 0.07 volumes REQUIRED DESIGN.• 0.5 ft. depth 388 sq. ft. ac 46.8 % impervious no sand underdrain Inlet Velocity 0.67 0 fps Inlet Flow Depth 4.8 in Depth to Ground Il~ater 6 6 ft Planting Soil Infiltration 1 0.52 in/hr In-Situ Soil Infiltration 0.27 0.00 in/hr ok ok ok ok ok