Addington Crossing Subdivision - Post Stormwater Map WS2

File: W:\CalAtlantic\Potter Road\Civil\DWG\04_Sheets\C-506 OVERALL POST DRAINAGE PLAN.dwg, Tab: C-500 OVERALL GRADING AND DRAINAGE PLAN (2)Plot Stamp: 8/11/2017 4:07:53 PM - Laurin HallnerADDINGTON CROSSINGCAL ATLANTICWESLEY CHAPEL, UNION COUNTY, NORTH CAROLINADESIGNED
SHEET NUMBER
PROJECT #
CHECKED
DRAWN
DATEDATE#DESCRIPTIONBYCALATL1603
07/27/2017
ROBERT L. CASH, P.E.
NC LICENSE No. 033448
07/27/2017
HK
JW
RC
SHEET TITLE05/10/20171ADJUSTMENT C-501 PER DUKE COMMENTS 0
1 INCH = FEET
75 150 300
150
3/5POST STORMWATER TRIBUTARY MAP (WS2)POST STORMWATER
TRIBUTARY MAP (WS2)
DET 4 AREA DATA
WATERSHED
(WS)
WS TOTAL
AREA (AC)CN TC
AREA P 14.06
TOTAL 14.06 68.00 11.70
DIRECT RELEASE 3 AREA
DATA
WATERSHED
(WS)
WS TOTAL
AREA (AC)CN
AREA O 6.32
AREA Q 1.85
TOTAL 8.16 68
BYPASS 3 AREA DATA
WATERSHED
(WS)
WS TOTAL
AREA (AC)CN TC
AREA R 113.70
AREA S 4.92
TOTAL 118.62 64.00 57.80
LEGEND
BYPASS AREA
DIRECT RELEASE AREA
DETENTION POND 1
DETENTION POND 2
DETENTION POND 3
DETENTION POND 4
COMPARISON PRE TO POST DEVELOPMENT
CONCENTRATION
POINT (WS)Q25 (cfs)Q100 (cfs)CONCENTRATION
POINT (WS)Q25 (cfs)Q100 (cfs)
XCP1 202.92 312.43 CP1 197.72 309.74
XCP2 161.70 259.65 CP2 163.56 254.79
N/A N/A CP3 (CULVERT ONLY)178.06 280.14
TOTAL RUNOFF
(XCP1+XCP2)364.62 572.08 TOTAL RUNOFF
(CP1+CP2)361.28 564.53