SW5240402_Design Calculations_20240422

Highland Place Subdivision APPENDIX C
Second Section - Erosion Control
Low Density Impervious Calculations
Total Site Area 1,099,159.47 25.23
Total Surface Water Area 3,781.44 0.09
Total Onsite Drainage Area 1,095,378.03 25.15
Total Offsite Drainage Area 980,956.88 22.52
Total Drainage Area 1,409,744.36 32.36
Total BUA in Project (23.99%) 262,781.19 6.03
Total Road Area in Project 76,860.19 1.76
Total Remaining BUA after Road
Construction 185,921.00 4.27
Total per Lot (64 Lots) 2,905.02
Stormwater Runoff Tc (Min) 110 (in/hr) Cc Q10 (cfs)
Pre-Construction 5 6.97 0.45 78.87
Post Construction 5 6.97 0.65 113.28
SEAL
18197
3/8/2024