V4 11 Stormwater Report Rev 3 1 26 2023

28 Pond Report Hydraflow Hydrographs Extension for Autodesk® Civil 3D® by Autodesk, Inc. v2023 Friday, 01 / 27 / 2023 Pond No. 3 - Basin #1B Pond Data UG Chambers -Invert elev. = 404.00 ft, Rise x Span = 4.00 x 4.00 ft, Barrel Len = 70.00 ft, No. Barrels = 3, Slope = 0.00%, Headers = Yes Stage / Storage Table Stage (ft) Elevation (ft) Contour area (sqft) Incr. Storage (cuft) Total storage (cuft) 0.00 404.00 n/a 0 0 0.40 404.40 n/a 158 158 0.80 404.80 n/a 275 433 1.20 405.20 n/a 334 768 1.60 405.60 n/a 368 1,136 2.00 406.00 n/a 385 1,521 2.40 406.40 n/a 385 1,906 2.80 406.80 n/a 368 2,274 3.20 407.20 n/a 334 2,609 3.60 407.60 n/a 275 2,884 4.00 408.00 n/a 158 3,042 Culvert / Orifice Structures Weir Structures [A] [B] [C] [PrfRsr] [A] [B] [C] [D] Rise (in) = 3.00 0.00 0.00 0.00 Crest

[PrfRsr] [A] [B] [C] [D] Rise (in) = 3.00 0.00 0.00 0.00 Crest Len (ft) = 4.00 0.00 0.00 0.00 Span (in) = 6.00 0.00 0.00 0.00 Crest El. (ft) = 407.15 0.00 0.00 0.00 No. Barrels = 2 0 0 0 Weir Coeff. = 3.33 3.33 3.33 3.33 Invert El. (ft) = 404.00 0.00 0.00 0.00 Weir Type = Rect --- --- --- Length (ft) = 0.00 0.00 0.00 0.00 Multi-Stage = No No No No Slope (%) = 0.00 0.00 0.00 n/a N-Value = .013 .013 .013 n/a Orifice Coeff. = 0.60 0.60 0.60 0.60 Exfil.(in/hr) = 0.000 (by Wet area) Multi-Stage = n/a No No No TW Elev. (ft) = 0.00 Note: Culvert/Orifice outflows are analyzed under inlet (ic) and outlet (oc) control. Weir risers checked for orifice conditions (ic) and submergence (s). Stage / Storage / Discharge Table Stage Storage Elevation Clv A Clv B Clv C PrfRsr Wr A Wr B Wr C Wr D Exfil User Total ft cuft ft cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs 0.00 0 404.00 0.00 --- --- --- 0.00 --- --- --- --- --- 0.000 0.40 158 404.40 0.63 ic --- --- --- 0.00 --- --- --- --- --- 0.631 0.80

158 404.40 0.63 ic --- --- --- 0.00 --- --- --- --- --- 0.631 0.80 433 404.80 0.99 ic --- --- --- 0.00 --- --- --- --- --- 0.989 1.20 768 405.20 1.25 ic --- --- --- 0.00 --- --- --- --- --- 1.248 1.60 1,136 405.60 1.46 ic --- --- --- 0.00 --- --- --- --- --- 1.462 2.00 1,521 406.00 1.65 ic --- --- --- 0.00 --- --- --- --- --- 1.648 2.40 1,906 406.40 1.82 ic --- --- --- 0.00 --- --- --- --- --- 1.816 2.80 2,274 406.80 1.97 ic --- --- --- 0.00 --- --- --- --- --- 1.969 3.20 2,609 407.20 2.11 ic --- --- --- 0.15 --- --- --- --- --- 2.260 3.60 2,884 407.60 2.24 ic --- --- --- 4.02 --- --- --- --- --- 6.265 4.00 3,042 408.00 2.37 ic --- --- --- 10.44 --- --- --- --- --- 12.81