V4 11 Stormwater Report Rev 3 1 26 2023

36 Pond Report Hydraflow Hydrographs Extension for Autodesk® Civil 3D® by Autodesk, Inc. v2023 Friday, 01 / 27 / 2023 Pond No. 4 - Basin #1A Pond Data UG Chambers -Invert elev. = 418.00 ft, Rise x Span = 4.00 x 4.00 ft, Barrel Len = 60.00 ft, No. Barrels = 2, Slope = 0.00%, Headers = No Stage / Storage Table Stage (ft) Elevation (ft) Contour area (sqft) Incr. Storage (cuft) Total storage (cuft) 0.00 418.00 n/a 0 0 0.40 418.40 n/a 78 78 0.80 418.80 n/a 136 215 1.20 419.20 n/a 166 381 1.60 419.60 n/a 183 563 2.00 420.00 n/a 191 754 2.40 420.40 n/a 191 945 2.80 420.80 n/a 183 1,128 3.20 421.20 n/a 166 1,294 3.60 421.60 n/a 136 1,430 4.00 422.00 n/a 78 1,508 Culvert / Orifice Structures Weir Structures [A] [B] [C] [PrfRsr] [A] [B] [C] [D] Rise (in) = 4.00 0.00 0.00 0.00 Crest

[PrfRsr] [A] [B] [C] [D] Rise (in) = 4.00 0.00 0.00 0.00 Crest Len (ft) = 4.00 0.00 0.00 0.00 Span (in) = 6.50 0.00 0.00 0.00 Crest El. (ft) = 421.40 0.00 0.00 0.00 No. Barrels = 1 0 0 0 Weir Coeff. = 3.33 3.33 3.33 3.33 Invert El. (ft) = 418.00 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 0 418.00 0.00 --- --- --- 0.00 --- --- --- --- --- 0.000 0.40 78 418.40 0.42 ic --- --- --- 0.00 --- --- --- --- --- 0.420 0.80

78 418.40 0.42 ic --- --- --- 0.00 --- --- --- --- --- 0.420 0.80 215 418.80 0.69 ic --- --- --- 0.00 --- --- --- --- --- 0.692 1.20 381 419.20 0.88 ic --- --- --- 0.00 --- --- --- --- --- 0.884 1.60 563 419.60 1.04 ic --- --- --- 0.00 --- --- --- --- --- 1.041 2.00 754 420.00 1.18 ic --- --- --- 0.00 --- --- --- --- --- 1.177 2.40 945 420.40 1.30 ic --- --- --- 0.00 --- --- --- --- --- 1.299 2.80 1,128 420.80 1.41 ic --- --- --- 0.00 --- --- --- --- --- 1.411 3.20 1,294 421.20 1.51 ic --- --- --- 0.00 --- --- --- --- --- 1.514 3.60 1,430 421.60 1.61 ic --- --- --- 1.19 --- --- --- --- --- 2.802 4.00 1,508 422.00 1.70 ic --- --- --- 6.19 --- --- --- --- --- 7.893