SW8970138_APPROVED PLANS_19971022

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT N0. SW�_ZUI
DOC TYPE ❑ CURRENT PERMIT
APPROVED PLANS
HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
YYYYMMDD

1
IN
(S
soc
LEN
FRC
Ou1
OF
SEC
AN(
U.S. HWY 1.7 SOUTHBOUND LANE
m
TOP OF BANK
5' WIDTH (7YP.)
,I EMERGENCY OVERFLOW
EL. - 46.0
4" SOLID WALL STANDARD
ADS POLYETHYLENE PIPE
RIP RAP OUTLET
PROTECTION
x
x I"
LEGEND:
x EXISTING SPOT GRADE
x 47.5 PROPOSED SPOT GRADE
EXISTING CONTOUR
45 PROPOSED CONTOUR
GENERAL NOTES:
1. AS -BUILT AND TOPOGRAPHICAL INFORMATION TAKEN FROM "SURVEY FOR A-1 HITCH AND TRAILER SALES",
PREPARED BY BOBBY M. LONG & ASSOC., DATED JANUARY 6, 1997, LAST REVISED MARCH 12. 1997.
2. REFER TO SOIL EROSION AND SEDIMENT CONTROL PLAN ENTITLED "SURVEY FOR A-1 HITCH AND TRAILER SALES",
PREPARED BY BOBBY M. LONG & ASSOC., DATED JANUARY 6, 1997, REVISED MARCH 12, 1997 FOR MEASURES
TO BE EMPLOYED DURING CONSTRUCTION AND FINAL STABILIZATION OF ALL DISTURBED AREAS.
TORM WATER MANAGEMENT CALCULATION
TOTAL SITE AREA: 5.77 AC
GRASS 3,89 AC
MARL 1.88 AC
% IMPERVIOUS 1.88 AC/5.77 AC = 32.6%ZL
VOLUME FROM 1" RAINFALL USING "SIMPLE METHOD"
Rv = 0.05 + 0.009(I)
= 0.05 + 0.009(32.6)
Rv = 0.34 in/in
VOLUME = 1 in x 0.34 in/in x 1 /12 ft/in x 5.77 AC
0.17 AC FT = 719
TO ACHIEVE REMOVAL OF 90% TSS W/O VEGETATIVE FILTER
SURFACE AREA OF A 4' DEEP POND = 0.17 AC
(FROM NCDEHNR TABLE SA=2.91 /100x5.77 AC)
DESIGNED POND:
ELEVATION AREA(SF) V UME ,CFI
45 7558A ® 0
46 10373A 8966 A A
TOP OF STORAGE FROM 1" RAINFALL = 45.80 A A
150 LF SODDED BANK IS EMERGENCY OVERFLOW zj
4" SNAP COUPLING
6' VEGUATIVE SHELF
AT 6:1 SLOPE 4' PERFORATED STANDARD
r r POLYETHYLENE
�`�/r�♦ SPLIT Ii
CAP
TOP OF STORAGE EL=45-so
1/4' 1/4' HARDWARE CUTH
V-10. I��iSECURE W/STAI STEEL
STRAPSI
DETENTION POND
& 0 UTFALL STRUCTURE
N. T. 5.
NOTE: SEED AND MULCH TOP OF BANK AND SWALE COMPLETE IN
ACCORDANCE WITH THE SEDIMENT AND EROSION CONTROL PLAN
GRASS SWALE
N.T.S.
DRIP RAP ( 6' THICKNESS )
,,-FILTER FABRIC
,_l67 STONE ( 9" CORE HEIGHT )
DIRECTION OF FLOW
NO
1. ALL STONE AND RIP RAP SHALL BE QUARRY GRANITE FREE FROM
TRASH OR OTHER DELITERIOUS MATERIAL
2. FILTER FABRIC SHALL BE INSTALLED BETWEEN THE #57 STONE AND
THE RIP RAP. THE FABRIC SHALL BE PLACED ACROSS 1 /2 OF THE
BOTTOM AND ACROSS THE ENTIRE TOP OF THE 057 STONE.
FILTER FABRIC SHALL BE MIRAFI 14ON OR APPROVED EQUAL.
3. STONE DAM CONSTRUCTION SHALL EXTEND ACROSS THE
ENTIRE SWALE SECTION. THE HEIGHT SHALL BE 75X OF THE
SWALE DEPTH. THE TOE OF THE DAM SHALL BE BURIED
3 TO 6 INCHES BELOW THE BOTTOM OF THE SWALE INVERT.
STONE CHECK DAM
N.T.S.
TIMBER RAIL ROAD
CROSS TIE
EXIST. GRADE OR
PROPOSED GRADE
EXISTING MARL BASE
(THICKNESS VARIES)
STORMWATER
NDTE: BURY TIMBER CROSS TIE MIN. 3 INCHES BELOW TOP OF EXISTING MARL BASE COURSE
TIMBER C URB � E C E i V E
N.T.S.
GRAPHIC SCALE SEP 121997
D E M
30 0 15 30 so PROD #_
I I I I
( IN FEET )
1 inch = 30 it.
REVISION 5: MAKE POND V DEEPER FOR ADDITIONAL PROP. MARL 9-8-97
REVISION 4:
REVISIONS PER NCDEHNR REVIEW COMMENTS
7-25-97
REVISION 3:
REVISIONS PER NCDEHNR REVIEW COMMENTS
7-1-97
REVISION 2:
REVISIONS PER NCDEHNR REVIEW COMMENTS
5-27-97
INCREASE POND SIZE FOR 90% TSS REMOVAL
REVISION 1:
REVISIONS PER NCDEHNR REVIEW COMMENTS
4-18-97
0
n
u-�
I
0
00
N
I
rM
0
m
ai
c
0
Q
a�
aV
W
nn
n
rn
N
t�
U
a
m
w
N
unun Cr
0
o0
az
w
�I
w
w
z
0
ADO
�-
z 13.
a
f1,
di L�
w
�
o
�
�C�
V 1
SCALE:
1 "=3O'
PROJECT #:
97010
FILE #: 97010CVL.DW
DESIGNED BY:
A.S.D.
DRAWN BY.
A.S.D.
CHECKED BY:
A.S.D.
DATE: 3-25-97
REVISION: 4-18-97
5-27-97
7-1-97
7-25-97
9-8-97
Lu =0 a
o=oL
�
�
a
�. er � z
a;
c�
CL
x
°i , �.�"�� "•���?�",,rid':^„r*a'
e
!1 }}}yy f��� ♦+♦��+T1��t •�a
�+^Y ems!
I
SHEET NUMBER:
LA P1r 4
' 1 i