SW1080102_APPROVED PLANS_20080312

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW IDI�OID
DOC TYPE
❑ CURRENT PERMIT
�P APPROVED PLANS
(❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
YYYYMMDD

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Property Notes:
Deed reference: Fowler - DB 820, PG 338.
Tax #: 7572-40-2923
The 0.64 acre tract and the 1.53 acre tract are existing
parcels of land. The 1.53 acre tract will be the future bank site
and the 0.64 acre tract will be an outparcel.
Project Data I Information
United Community Bank (Cashiers)
Commercial Project
Total Acreage of Project 2.17 Acres
Acreage of Bank Site - 1.53 Acres
Acreage of Out Parcel - 0.64 Acres
Wetlands: NONE
The project is located in :
TOWN OF CASHIERS
CASHIERS TOWNSHIP
JACKSON COUNTY, NORTH CAROLINA
Project Calculations
Gross Floor Area of Bank Building (1 story) - Approx 4,879 s.f.
Parking Provided - 31 Spaces + 2 Handicap
Number Parking Spaces Required - 17
Number Handicap Parking Spaces - 2 Spaces
Total Onsite Built Upon Area - 30,658 s.f.
Total Vehicular Use Area - 25,779 s.f.
Total Impervious Surface (Bank Site) - 46%
Total Impervious Surface (all) - 32%
IMPERVIOUS SURFACE
Engineering Certification:
The Storm Water Management Plan design was completed by Jeremy D. Cadeau, P.E.. The Storm
Water Management plan and details incorporate survey information, site layout, grading, landscaping
plan and erosion control design by others.
I Jeremy D. Cadeau, P.E. assure that the installed system will meet design specifications upon initial
operation once the project is complete and the entire drainage area is stabilized.
Entity Responsible for the Inspection and Maintenance of storm water management systems:
United Community Bank
P.O. Box 979
Brevard, North Carolina 28712
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OVERALL SITE PLAN
0' 20' 40' 80' 120'
1 �
SCALE : 1 "=20'-0"
LEGEND
Description Symbol
DOWNSPOUT
PIPE 1 CULVERT
.............
PARKING LOT POLE LIGHT
O
LANDSCAPE TREE UP LIGHT
-
STORMWATER CATCH BASIN
DRAINAGE SWALE
12
RIGHT TURN
IN ONLY
5IGNAGE
IGHT TURN
4T ONLY
BEFORE YOU DIG !
CALL 1—800-632-4949
N.C. ONE —CALL CENTER
IT'S THE LAW !
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Project Number:
SHEET
NUMBER:
Cl
Copyright © 2007, Creative Development Solutions, PA

NOTE:
1) ALL SOILS ASSOCIATED WITH THE CONSTRUCTION OF DETENTION
PONDS SHALL BE CERTIFIED BY A GEOTECHNICAL ENGINEER.
COMPACTION TESTING MUST BE PERFORMED AND SOILS WITH
MINIMAL SEEPAGE RATES MUST BE USED. (IE: CLAY LINER)
2) OWNER IS TO HIRE LANDSCAPE PROFESSIONAL TO CREATE LANDSCAPE LESS THAN 10' HT. = V TOP WIDTH
PLAN FOR PONDS IDENTIFIED WITH PROJECT. LANDSCAPE PROFESSIONAL 10' TO 15' HT. = 10' TOP WIDTH
SHALL DETERMINE PLANT SPECIES SUITABLE FOR SOIL, CLIMATE AND
HYDRAULIC CONDITIONS. VEGETATIVE COVER WITH
SLOPE STABILIZATION EMERGENCY SPILLWAY
LANDLOK S2 (IN UNDISTURBED SOIL
SPRAY BRIGHT ORANGE PAINT
AT LIP OF CONCRETE LINER TO IDENTIFY TYPE 2 BASIN /� CREMIENTSANDUPPER OR CUT SECTION)
MAINTENANCE LEVEL IN POREBAYB. OUTLET STRUCTURE
RIP RAP REINFORCE
SLOPE ABOVE PERMANENT CONC. LINER °y L FREEBOARD T-MIN. z
FOREBAYS 10 1 g a
OVERFLOwELEVATINELEv.T9o.9 —III—III i— —III—III—III—IIIkil
5 MAX EMBANKMENT STABILIZED
V, 1 TEMPORARYPOOL 1, 1 �I=I I�— — —� —� —� �=.III=IWITH VEGETATION x z
2 MAINTAIN SEDIMENT ATEOSgELP III —III —III ISELECTED,FILLI,PLACED INI.-1 I I1L PERMANENT POOL ELEV-99.3' UJ_—III—III—III— LAYERS AND OMPACTED _III—I3 _=III=III—III—I I I —I I I —I I I —I I —I I —I I I —I I I —I II —I I I=I 11=I I =III I 1.I=III— Ui
8° Conc, Liner
1%SLOPE MIN. SEE PLAN FOR PIPE SIZING
BASED ON Si NO
i
/\\/\\/\\/\\/\\/\\\\/\\/\\ /\\j\\/\\/\\/\\/\\/\\ \ \ /\\/ \/\\/\
LINER IS REQUIRED \//\/\/\/\/ /\/\/\/\ \/\/\/\/\/\/\/\ 2 /\ \/\/\ \/\/
Construction Sequence FOR THE WET POND
1 The Owner prior to construction on the site must obtain all of the necessary land disturbin \\i\\\/ \\\ \\\ \ 4'x4' ANTI -SEEP
P �'Y g .. /�//i \ \/.
permits and storm water permits and the Contractor shall verify this prior to denuding the land. CONCRETE ANTI- COLLAR
2) All temporary erosion control measures including silt fences, diversions and mud mats must FLOATATION COLLAR CUTOFF , 2' 10' O.C. STABILIZED
be installed prior to construction activities on the site. TRENCH PRINCIPAL OUTLET
3) The temporary sediment traps are located in the vicinity of the permanent storm water EXTEND DOWN SPILLWAY BARREL
features and these traps must be cleaned and graded according to the storm management plan \ TO SOIL TIGHT LAYER 1:1
and ground cover must be established as soon as possible after the rest of the site is stabilized. \\\_
4) Due to the location of the storm water management features they must be installed prior to HOPE PIPE WITH WT JOINTS
the final stabilization of the site. Therefore the contractor should take care to divert runoff
away from storm water systems until the entire site has been stabilized and the storm
management system is ready for operation. WET
-T- POND
O^ D DETAILS
5) The Contractor is to make sure storm management systems are clean and operating v v
correctly before demobilizing from site.
PLAN
^ 4'-0"
I
#6" T-0"
VARIABLE
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SIDE
6" FOR CONCRETE
# { 8" FOR BRICK
^ 4'-0" FOR CONCRETE (MIN.)
{ 4'-4" FOR BRICK (MIN.)
LO IT
T 6° 2.10„ 6"
SIDE
w 34
FRONT
NOTE: FOR CONSTRUCTION OF CATCH
BASIN, EITHER BRICK MASONRY SOLID MH COVER
OR CLASS "A" CONCRETE MAY BE
USED. IN CASE OF CONCRETE, THE 2 3/8
WALLS AND FLOOR ARE TO BE 6"
THICK AS SHOWN FOR BRICK, THE
WALLS ARE TO BE 8" THICK AND
THE FLOOR 6" THICK.
NOTE: FOR DEPTH OVER 10' BRICK T-10"
WALLS TO BE 12" AND FLOORS
TO BE 8" THICK. FOR CONCRETE,
WALLS TO BE 8" THICK AND PLAN VIEW OF COVER
FLOORS TO BE 8" THICK.
NOTE: FOR PIPES LARGER THAN 24" BOX DIMENSIONS MUST BE INCREASED.
PER PRECAST MANUFACTURERS SPECIFICATIONS
CATCH BASIN — TYPE 2
STEPS ARE REQUIRED IN ALL BASINS
Wet Pond Dimensions
Basin Elevations
Basin bottom elevation 95.00 ft
Sediment cleanoutelevation 9 07 0 ft
Bottom of shelf elevation 98.80 ft
Permanent pool elevation 99 0303 ft
Top of shelf elevation 1 000 0 it
Temporary pool elevation 100.30 ft
Volume and Surface Area Calculations
SAIDA ratio 2.06 (unitiess)
Surface area at the bottom of shelf 1275.00 f?
Volume at the bottom of shelf 28 000 0 ft3
Permanent pool, surface area required 1,355ft2
Permanent pool, surface area provided 1,397 ftz
Permanent pool volume 4197 ft3
Average depth for SAIDA tables 3.00429 ft
Surface area at the top of shelf 3700 fe
Volume at the top of shelf 9000 ft3
Forebay volume 830 ft3
Forebay % of permanent pool volume 20
Temporary pool, surface area provided 3,782 fe
^ 4,_0„
#6" T-l0" #6t
1
FRONT
ISOMETRIC VIEW ^ ^ ^w^^
A Pt
2`1 114"
3/4" 1'-11 3/4' h
� I
4 318' 2'-0 12"
2'-9 i14"
SECTION A -A
MANHOLE RING
NOTE: TRAFFIC BEARING RING AND COVER.
MINIMUM WEIGHT 315 POUNDS
HALF PLAN OF MANHOLE
RING & COVER
SECTION A -A
MANHOLE COVER
VANHOLE RING 8c COVER
NOTE: FREE STANDING STRUCTURES OVER 4' TALL SHALL
BE CONSTRUCTED AND POURED MONOLITHICALLY OR THE
RISER SECTIONS MUST BE SECURELY CONNECTED TO BASE
STRUCTURE.
TYPE 2 STRUCTURE WITH
SOLID FRAME AND GRATE
4X4 CONCRETE BOX
ELEV. 101'63'
' ELEV -101'
ELEV 100
/ IMPERVIOUS
/ CLAY LINER
TEMPORARY POOL 63 /
ELEV-100.3' 4" /
STAINLESS STEEL /
PIPE STRAP TO ANCHOR / 8"HDPE PIPE
PVC TO BASIN /
4" SCH 40 PVC /
TEE AND FITTINGS /
PERMANENT POOL /
ELEV-99.3' 'ELEV-99,0'
4" SCH 40 PVC / ' POUR BASE WITH CONCRETE UP TO
GLUE GAP AND DRILL /� INVERT. MAKE INVERT FLUSH AT
1" HOLE /° a ELEV. 98.5'
°a
STRUCTURE BOTTOM ELEV - 97' /
IMPERVIOUS
POND BOTTOM ELEV - 95' 7� CLAY LINER
SUMP IN LOCATION AROUND PIPE —'
INLET PROVIDED FOR MAINTENANCE
AND REMOVAL OF SEDIMENT
OJTLET CONTROL
STRUC TJRE #1
See Site Flan for Channel slope
3dc
A P�pe Out at to Flat Area W th A
011
Riprap
D50 = 15"
Dmax: 18" 3,
T = 24" � L a�
Permanent Riprap Channel
Riprap Channe Notes:
1. Line subgrade with Vl,ofi 50OX T
geotextile `abrlc prior to placing riprap. Section A —A
2 Channel shall be lined wb° NCDOT ZIILer Blan�et
Clcss 1 riprap unless othe,w se noted. 6o7. Iron Woven
3 Provide -iprop li^ed chcnnels whe,e
:nd�cated on olons
Pipe O.Itlet to Weli 3e4'ned Channel
NnFoc
STORM WATER MANAGEMENT SYSTEM #1
WET POND
Engineering Certification:
The Storm Water Management Plan design was completed by Jeremy D. Cadeau, P.E.. The Storm
Water Management plan and details incorporate survey information, site layout, grading, landscaping
plan and erosion control design by others.
I Jeremy D. Cadeau, P.E. assure that the installed system will meet design specifications upon initial
operation once the project is complete and the entire drainage area is stabilized.
Entity Responsible for the Inspection and Maintenance of storm water management systems:
United Community Bank
P.O. Box 979
Brevard, North Carolina 28712
�oQ� Nyo
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3_I _o o Forebays
Maintenance 4C
from drive thru
Forebaye are primary areas for
/
sediment capture. These areas shall
be used as Temporary Sediment traps.
Once site has been stabilized the
/
contractor le to remove sediment from
the trap and erosior control features
(�
must be repaired before operation as
/
a storm water BMP begins. When
converting temporary system to
/
permanent storm water system a min. of
&'I of bottom material must be
removed prior to conversion.
/
rn
18' pipe rip rap outlet protect:o
f
Entrance w'dth ("3do") = 4S'
Erd width ("w') = 145'
Length ("la') = Per Plan /
dmox rip -rap = 05' Cclass 'b')
t- apron thickness = 0,75'
Pipe IIF_III /
CD
0' of 18" SWCP
Outlet Elev - 89.50'
/
Curb Inlet Structure 'J'
Rim Elev. 105 /
Inv. In Elev. g9.0
Inv. Out Elev. 9g.8
/
Contractor to set /
large boulders
In place to
elongate water flow
path
towards outlet. /
Temporary Fool /
Elev. 100.3
Temporary Sediment Area. /
Once site has been stabilized the /
contractor is to remove sediment from
a
the trap and erosion control features
must be repaired, and the vegetated /
shelf must be restored before
operation as a storm water BMP /
begins. When converting temporary
system to permanent storm water system
a min, of (all of bottom material must
/
be removed prior to conversion.
Permanent Pool /
Elev. g9.3 /
I
Outlet Control
Structure 01
RIm Elev, 101.63'
See Deta i Is /
Based on SNWT, no liner is
reoluired for the Wet Pond 10
Emergency Overflow. Provide
rip rap protection
Drainage Easement
along road ROW's /
- - - - - --
�E
Contractor to utilize clay to create . E.
hardened earthen dam along outer face of 1
A licensed Cxeotechnical Ergineer shall certify
the compaction of the pond and the material
in this location. The report shall be submitted
_" to CDS.
0' 10' 20' 40' 60'
OASCALE: 1 "=10'-011Cf
19" pipe ric rap outlet protection
Entrance width "'3do') = 4 5'
End width ("w')
_ength ("la') = Per Plan
drlax rlp-rap = 05' (class "b')
t= apron thickness = 075'
Pipe E-2
12' of 18" SWCF
Outlet Elev - 100'
�W
Ija
V-0
1• no _ amPI =E E
am
55, or
on
12
wcf- MIN
Curb Inlet Structure "E"
/ Rim Elev.
Inv. In Eiev. 10 100.50
Irv. Out Elev. 100.50
11S
Inlet Structure 'E-1'
Rim Elev, 106.4
Inv. In Elev. 103.5
Inv. Out Elev, 1035
Drainage Easement
\ In order to establish
plant species below
�\ permanent pool
elevation the water ;
table may need to be
owered.
I
Ili
Drainage Easement
�U 0 ■■■■■ ■ ■
Curb Inl
J ro Rim
In E
� I
ut
I
I
CULVERT - 98.6 I�2
_ ■■■ ■■"■■■■■,, ■---
30' Ve etative
18' pipe rip rap
outlet protection
g
Entrance width
("8da") = 4 t'
Curb Inlet Structure 'I'
Filter Strip. Do not
Dayllght pipe
End wdth ('w)
= 145'
Rim Elev. 102.0
BEFORE YOU DIG !
install until site is
Elev. 98.9' Provide Rlp
_ength C'.a)
0'
nv. In Eiev. 100,3
stabilllzed and
Rap outlet protection an
drrax rip -rap
- 0.5' (cuss "b')
out Elev. 100.3
CALL 1-800-632-4949
construction of
line channel to slow flow
t= apron t'n'Ic'-mess
= 075'
nv,
N.C. ONE -CALL CENTERwet
pond has
From upstream culvert
started.
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Project Number:
SHEET NUMBER:
C2
Copyright © 2007, Creative Development Solutions, PA
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