HomeMy WebLinkAboutSW7971023_APPROVED PLANS_19971212STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SWl?,g��
DOC TYPE
❑ CURRENT PERMIT
APPROVED PLANS
HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
YYYYMMDD
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15.51
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ASSOC/A 77ON OF
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NVDUr=1273
C� ROAD 13.63 NGVD 29 c VERSION /S -6.J6' EDWARD T. HYMAN, JR.
� IN P.O. BOX 2174 #-
%624 00201 ELIZABETH CITY, NC 27906-
TELE H ON
(919) 3 -291-
tFAX
�4//}�. NOTE ADD 4' TO EACH E5 D OF
CULVERT FOR NEVV
TOTAL BNGTH OF 37.. USING
TO / \ SAME MATERIAL AS EXISTING. _ 1�t.MIS.� IRLel
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'S'iy� 17.44 �. � �. 4'0
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STORM DRAINAGE SCHEDULE
ijC \ Type See Detail Top Inlet Cuinul. Discharge Pipe Grade \ -r4o EXj,5riR& nTz44
\ 0- Key Structure Elev. Elev. Inv. In Inv. Out D Percent Velocity Available Q r
P� 1 1 Yard Inlet 15,67 13.24 .40 CFS 65LF 15" PE 0.60% 2 81 CFS 5 02 CFS
2 Curb Inlet 15,7 15.03 12,86 12 7 2.07 CFS 160LF 15" PE 0.70% 4 36 FPS 3,79 CFS \
3 FES 11,60 11.30
\ 4 Curb Inlet 16,10 15A3 12.73 2.76 CFS 145 LF 15" PE 0,70% 4,70 FPS 3.10 CFS
5 FES 11.60 11.40
\ 6 Yard Inlet 15AO 12.37 1.03 65 LF 15" PE 0.70% 3.59 FPS 4.83 CFS
7 FES 11.60 11.40
8 Curb Inlet 15.02 14.35 11.30 1.72 CFS 45 LF 15" PE 2,11% 6.16 FPS 8,42 CFS
9 FES 10.55 10.35
40 0 40
SCALE IN FEET
STORMWATER RUNOFF DATA
Total Site Area - 20.71 Acres (902,204 sf)
Existing Site Conditions:
Area of existing ponds - 8.93 Acres (388,921 sf)
Impervious area/asphalt - 0.48 Acres (20,863 so
Pervious area - 11.30 acres (492,420 sf)
Proposed Site Conditions:
Area of existing ponds - 8.93 Acres (388,921 sf)
Impervious area - 2.11 Acres (91,894 sf)
(Asphalt/concrete 59,907 sf)
(Buildings 31,987 sf)
Pervious area - 9.67 Acres (421,389 sf)
NOTES:
1) 14.4% of existing pervious area will become built -upon area for a total impervious area of
17.9 % of the high ground area of the site, and 10.2 % of the total site.
2) The existing pond that will receive stormwater runoff is a former borrow pit with no
known outlet, per information provided by Edward Hyman. RLS, Elizabeth City, N.C.
The surface area of this particular pond is 238,948 sf.
TA YL OR
PROPERTY
107.61
0 22 ACRES
n
$
ry
/ APPROVED
NORTH CAROUNA ENVIRONMENTAL
/ MANAGEMENT COMMISSION
OIVIQION OF ENVIRPNMDITAL MANAGE1Eli
ila�wMr Pff t No. 5, 17� Q_ 7�
RECEIVED
WASHINGTON OFFICE
kBEC 10 1991
�F4R6
1 SYMBOL SCHEDULE
% EXISTING CONTOURS - - - - - -
PROPOSED CONTOURS �12
EXISTING DITCI-�ES =-
PROPOSED V-DTTCI-I -I -- >
SILT FENCE .........................
ROCK CI-ECK DAMS %=
NOTE Sty SWEET L-4 PCQ
EROSION CONTROL NOTES.
CONSTRUCTION SEDUENCE.
AND DETAILS.
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CRADING E EROSION CONTROL PLAN
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PFVISIONS.
26 NOV. '4? - GRADING
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PROJ. NO. 97031
DATE 6 OCT. '97
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RADIUS • 77.50'
LENGTH - 100.97'
CHORD - 93.98' /
CH. BEARING - N 84 50'30" W / !�
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NOTES
I. PROPERTY BOUNDARY DARY INFORMATION WAS TAKEN FROM A MAP ENTITLED
'PROPERTY SURVEY FOR PASQUOTANK ASSOCIATES, LIMITED PARTNERSHIP,
MOUNT I ERMON TOWNSHIP, PASOUOTANK COUNTY, NORTH CAROLINA
DATED AUGUST 29, 1997, BY EDWARD T WYMAN, JR., REGISTERED LAND
SURVEYOR.
2, THE LAKES SHOWN WERE TRANSPOSED FROM THE FLOOD INSURANCE
RATE MAP, COMMUNITY PANEL NO. 370185 0003 D.
EC
WASH NGTONeOF€ICE
DEC 0 3 1997
D.EM.
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L-IA A SCALE. I- - 6O--o• 1
REVISIONS
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PROJECT NO.97O31
DATE OCT. 1997
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