SW4091202_APPROVED PLANS_20100519

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW 4��a�j
DOC TYPE
❑ CURRENT PERMIT
%APPROVED PLANS
C
❑ HISTORICAL FILE
DOC DATE
YYYYMMDD

� U
0 p
D
[Y]U
U
N
O
^_ G
C3
._�.. - ... 1__ .:.j_S_—..-._!._,•_ __ .�."__....�__ ....�,.:'L..._L... :!j jA__L.i LL I i- :1«. AA I., ........ 1.-1 ,1'.
a I�j , � r j � r ,�: 1 , � �'t +, ,. r i ��r c, :,�: �� 4 '•� �'�� �,;' ��:�., � .;
1-
'1. Q
�9 r 1Al

lc / b
Q 2009 ARCADIS G&M, INC.
V)
V)
Q
k'
E�
E Y
0
cV m
I �
z
[] J
Ch M
N C?
>,<n
Ca
�Z
7
tv
E a
Z
��
nCL
s
a�
0
r_
v
tI1-111= Iil= kiI
I� IIL 111=111=
FINISHED GRADE
10 & 11 INFLOW
NORMAL WATER
SURACE = h4
r-- ACCESS MANHOLE g
M4 AA 1nnrPn
A FRUHLL VILVV B
—o,r rn uAMUAI C MD --- PERFORATED UNDERDRAIN PIPES (4 TOTAL)
ACCESS MANHOLE
PRECAST OR CAST
IN --PLACE CONCRETE VAULT,
DESIGNED BY OTHERS
OUTLET PIPE
FLOW
- - --`MEN-
ACCESS MANHOLE
4 .
. F
f8" PLUG VALVE
W/ FLYWHEEL, OR •
APP'O EDUIV,
a'
4
! 4 , a • a a a R _, 4 as ' `• as 4' .a a
d3 d4
Lf-j FAN VI EW
Is
4
INFLOW PIPE--\
WATER QUALITY I- 1
SURFACE
NORMAL WATER I I'.
SURFACE -
,I I-
I I
. 7
9
Wl
SECTION A -A
. a
WATER QUALITY
SURFACE
FLOW
SAND TO BE
CLEANED, WASHED, I OEWATERING
COURSE MASONRY '' DRAIN W/
SAND (ASTM C33) J VALVE
DESIGN WEIR / I
PERMANENT POOL
2" GRAVEL -
n
NONWOVEN l_ ""'SAND FILTRATION CHAMBER : ``..
FILTER FABRIC .14
. L—
elev. h8
elev. h5
elev. h4
DESCRIPTION
DIMENSION
wl
WIDTH OF SAND FILTER CHAMBER
49'
d2
LEGNTH OF DISTRIBUTION CHAMBER
3'
d3
LENGTH OF SAND FILTRATION CHAMBER
15'
d4
LENGTH OF OUTLET CHAMBER
3'
DESCRIPTION
ELEVATION
h 1
INVERT AT BOTTOM OF SANDFILTER
800.08
h2
BOTTOM OF SAND LAYER
800-08
h3
TOP OF SAND LAYER
801.58
h4
TOP OF STONE LAYER
801.75
h5
TOP OF WATER QUALITY VOLUME
804.75
h8
TOP OF SAND FILTER CHAMBER
806.75
* ELEV. = HEIGHT ABOVE BOTTOM INVERT 111
INVERT hi
SAND FILTER NOTES:
1. THE STRUCTURE MUST BE DESIGNED BY A LICENSED STRUCTURAL ENGINEER AND
THE PLANS MAY REQUIRE A
SEPARATE BUILDING PERMIT. STRUCTURE AND SURFACE APPURTENANCES TO BE TRAFFIC RATED.
2. THE SHELL MAY CONSIST OF PRECAST OR CAST -IN -PLACE CONCRETE.
3. THE WASHED STONE LAYER AT THE TOP OF THE SAND LAYER SHOULD BE TWO INCHES
THICK AND MEET #57
STONE SPECIFICATIONS.
4. THE MEDIA IN THE SAND FILTER SHALL BE CLEANED, WASHED, COURSE MASONRY
SAND, SUCH AS ASTM C33.
THE SAND PARTICLES SHALL BE LESS THAN 2 MM AVERAGE DIAMETER.
elev. h8
5. THE FILTER FABRIC BENEATH THE TWO-INCH LAYER OF STONE ON TOP OF THE SAND SHOULD CONFORM TO
THE FOLLOWING SPECIFICATIONS:
PROPERTY TEST METHOD UNIT
SPECIFICATION
elev. h5
MATERIAL NONWOVEN GEOTEXTILE FABRIC
UNIT WEIGHT ASTM D-1777 OZ./SQ.YD.
4.3 (MIN.)
FLOW RATE FALLING HEAD TEST GPM/SQ.FT.
120 (MIN.)
PUNCTURE STRENGTH ASTM D-751 (MODIFIED) LB
60 (MIN.)
THICKNESS IN.
0.8 (MIN.)
elev. h4
6. THE FILTER FABRIC BENEATH THE SAND LAYER SHOULD CONFORM TO THE FOLLOWING SPECIFICATION.
elev. h3
PROPERTY TEST METHOD UNIT
SPECIFICATION
MATERIAL NONWOVEN GEOTEXTILE FABRIC
UNIT WEIGHT OZ./SQ.YD.
8 (MIN.)
INVERT hi,
FILTRATION RATE IN./SEC.
0.08 (MIN.)
PUNCTURE STRENGTH ASTM D-751 (MODIFIED) LB.
125 (MIN.)
elev. h2
MULLEN BURST STRENGTH ASTM D-751 PSI
400 (MIN.)
TENSILE STRENGTH ASTM D-1682 LB.
300 (MIN.)
EQUiV. OPENING SIZE US STANDARD SIEVE NO.
80 (MIN.)
PERFORATED --v
�-- 3" OF WASHED #57 STONE
UNDERDRAIN
SECTION B ---- B AROUND UNDERDRAIN
OUTLET (4 TOTAL)
7.
FILTER FABRIC SHOULD BE CUT WITH SUFFICIENT DIMENSIONS TO COVER THE ENTIRE WETTED PERIMETER OF
THE FILTERING AREA, WITH A SIX-INCH WALL OVERLAP.
8,
A SIX (6) INCH DIAMETER DIP OR PVC DEWATERING DRAIN WITH A GATEVALVE IS TO BE INSTALLED AT THE
TOP OF THE STONE/SAND FILTER BED.
9.
THE UNDERDRAIN PIPING CONSISTS OF SCHEDULE 40 OR BETTER POLYVINYLCHLORIDE (PVC) PERFORATED
PIPES. PERFORATIONS SHOULD BE 3/8 INCH, AND EACH ROW OF PERFORATIONS SHOULD CONTAIN AT LEAST
FOUR (4) HOLES. MAXIMUM SPACING BETWEEN ROWS OF PERFORATIONS SHOULD BE SIX (6) INCHES.
10.
THE MINIMUM GRADE OF UNDERDRAIN PIPING SHOULD BE 1/8 INCH PER FOOT (ONE (1) PERCENT SLOPE).
11.
EACH PIPE SHOULD BE THOROUGHLY WRAPPED WITH 8 OZ./SQ.YD. GEOTECHNICAL FABRIC.
12.
CLEAN -OUTS FOR EACH PIPE SHOULD EXTEND AT LEAST SIX (6) INCHES ABOVE THE TOP OF THE UPPER
FILTER SURFACE, E.G., THE TOP LAYER OF STONE AND HAVE A SECURELY FASTENED WATERPROOF CAP.
13.
ONCE A YEAR, SAND MEDIA SHALL BE SKfMMED. THE SAND FILTER MEDIA SHALL BE REPLACED WHENEVER IT
FAILS TO FUNCTION PROPERLY AFTER VACUUMING.
14.
THE SAND FILTER SHALL BE INSPECTED QUARTERLY AND WITHIN 24 HOURS AFTER EVERY STORM EVENT
GREATER THAN 1.0 INCHES. RECORDS OF INSPECTION AND MAINTENANCE SHALL BE KEPT IN A KNOWN SET
LOCATION AND WILL BE AVAILABLE UPON REQUEST.
SAND FILTER SCHEMATIC
NOT TO SCALE
WATER TREATMENT SYSTEM SCHEMATIC
NOT TO SCALE
Appl aved Stormy!pter Permit Gc.
ConS ;'LC;tii?n in ,c..; ;:°..r tn'ith these I.
req-.in-d by ;he Pe,r.lit r'dar'
ral,-s 'equir th 'h s o- 1 syst°,i
Inspe :t dUr (g t,.,3� *1 c i�•: y ^ r,
pla!is and s,oecs ant isy e: l,:piianf
`_:tof'rTl'Aater rlll&8. ( I: -,A NOAC 1H iv(' ,
py_,SfCL _ -- INC Divis'c. er Quakvt?
0
5/10/2010
ISSUED FOR GRADING, DRAINAGE AND
OFF -SITE ROADWAY CONSTRUCTION
D
4/27/2010
STORMWATER REVISIONS
C
12/03/2009
NCDENR DWQ SUBMITTAL
B
11/13/2009
ASHEBORO CUP RESUBMITTAL
A
10/13/2009
ASHEBORO CUP SUBMITTAL
i���ICj►'�1]�Ilil�ll�f7�►'��i�l��[I��
EVANSTON ASHEBORO, LLC
103 NORTH STERLING ST.
MORGANTON, NC 28655
[phone]
PROJECT TITLE
BANK
US HWY 64 AND DUBLIN ROAD
ASHEBORO, NORTH CAROLINA
SHEET TITLE
STORMWATER DETAILS
ARCADtS G&M of North Carolino, Inc.
801 Corporate Center Drive, Suite 300
Raleigh, NC 27607
Tel: [phone] Fax: [phone]
www.arcadis-us.com
License Number C-1869
SEAL �tulrurrr
SEAL
L
_ 25497
0INtV,-"* "
''''4'''``
SE L NOT VALID UNLESS SIGNED AND DATED
PROJECT MANAGER
DEPARTMENT MANAGER
J. ALEN
J. BELL
LEAD DESIGN PROF.
CHECKED BY
J. RROROCK
J. ALL£N
PHASE/TASK NUMBER
DRAWN BY
00001
A. LYNCH
PROJECT NUMBER
DRAWING NUMBER
NC409003
Cwl 2
r-_� -- c- .3 f r
I
••If' ' . L 1 1�-�, .. 1. .. - .. �.A - I 1-i 'r 1,_ •'�. . �. 1 . • .b•..iJ L131J:'!l..M1f :I'.,15,. 1,_1i 1.•

C.i
_Z
E tn
CY
PO
O
CV
I �
2
O J
O r7
N O
O
N
J
O
tY �
i7
-+� I-46
y +r ri
.r�'11c.
6