SW5220201_Plansheet CE-22 - SCM Detail_20220517

BEFORE YOU DIG,
CALL
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NORTH CAROLINA
ONE CALL CENTER
www.ncocc.org
TOP OF
DAM 242.50
3 1.87 FT. 1-YR STORM 240.90
� 1 FREEBOARD
WQV y TEMP. POOL 240.63
FOREBAY SEDIMENT
10-YR STORM 241.55
V PERMANENT POOL 239.00
-2 4 2
1 /FOREBAY
2
STORAGE ELEVATION 235.0 LAI I /_.)e.0
FOREBAY ENTRANCE 234.0
WET DETENTION POND PROFILE
NOT TO SCALE
VEGETATED SHELF LANDSCAPE PLAN
VEGETATED SHELF = 2202 S.F.
ALL PLANTS SHALL BE 3" CONTAINER PLANTS,
THERE SHALL BE A MINIMUM OF 3 PLANT
SPECIES, AND A MINIMUM OF 50 PLANTS PER
200 SF OF VEGETATED SHELF.
ABOVE PERMANENT POOL
Botanical Name Common Name QTY.
Eupotoriodelphus dubius Dwarf Joe Pye Weed 184
Lobelia cardinalis Cardinal flower 184
Lobelia siphilitica Great blue Lobelia 184
POND SIDE SLOPES
Vegetate w/Centipede Seed @ a rate of
60 lbs./Ac.
MOTE:
CONTRACTOR TO COMPACT BOTTOM OF POND TO
=NSURE INFILTRATION IS LESS THAN 0.01 IN./HR.
MOTE:
A PORTABLE PUMP SHALL BE USED FOR PUMP
DOWN AND MAINTENANCE.
MOTE:
VEGETATED SHELF MUST HAVE 6 IN OF TOPSOIL
AS THE TOP LAYER OF MATERIAL
BOTTOM
POND 232.00
3
1�
6:1
VEGETATED
SHELF
MAIN POOL SEDIMENT
STORAGE ELEVATION
233.0
STAGE/STORAGE TABLE
STAGE
ELEVATION
CONTOUR
AREA (SF)
INCREMENTAL
STORAGE (CF)
TOTAL
STORAGE (CF)
0
239.00
13,080
0
0
1.00
240.00
16,265
14,673
14,673
1.63
240.63
17,265
10,562
25,234
2.00
241.00
18,031
6,530
31,764
3.00
242.00
19,910
18,971
50,735
3.50
242.50
21,809
10,430
61,164
/ 0 20 40 50 C
\ / \\
Conversion Procedure
Sediment Basin to Wet Detention Pond
1. After the site is completely stabilized, contact Stocks Engineering @
252-459-8196 for verification of completion and stabilization.
2. Contact DEQ for approval to remove
all temporary erosion control measures.
3. Upon approval from NC DEQ, begin the conversion of the wet
pond from a temporary sediment trap to a permanent BMP as follows.
4. If standing water is in the basin, contractor shall pump the water out
discharging through a silt bag.
5. Remove the skimmer which is connected to the riser and convert to
the permenent orifice as shown below in detail.
6. Bring the side slopes surrounding the pond and vegetated shelf to the
proposed grade.
7. Contractor shall verify pond depth and muck out sediment to the
design depth of the pond.
8. Excavated material must be disposed of in an approved off -site location.
9. Care must be taken to prevent any sedimentation/re-sedimentation
during this process, as sediment deposits in the bottom of the pond
may affect the depth. If any sedimentation occurs during this process,
Contractor shall remove sediment immediately.
10. Contact Stocks Engineering @ 252-459-8196 to inspect excavated pond
before continuing construction.
11. Upon approval of Stocks Engineering, continue constructing pond per details.
Establish appropriate permanent vegetation around pond as soon as possible.
12. Upon completion of pond construction, remove sediment from silt fence
and dispose of at an approved off -site location. Plant vegetated shelf
and seed and mulch side slopes.
13. Contact Stocks Engineering @ 252-459-8196 to inspect completed pond
before placing pond in service.
* SCM maintenance will be the responsibility of the HOA once turned over by
the developer.
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CONCRETEb�E/R OUTLETSTRUCTU/�E
NOT TO SCALE
P�
F O
P�
1O
18" CLASS B RIP RAP
OUTLET PROTECTION
S72037' 0"E
69.27'
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2,3�\
242 S 242
242�
TOP
OF
DAM
242.5
:TOP
OF
WEIR
240.9
CR,SSSECT/ON
POND
W
4" THICK CONCRETE
WEIR STRUCTURE
34 LF 4" DIP @ 1.0%
4" PVC CAP WITH
SCREW TYPE PLUG
TOP ELEV. 240.00
N
NORMAL POOL =
N V. ELEV. 239.00
BOTTOM ELEV. 238.50
DIP CAP W/2.5" HOLE
DRILLED IN CAP.
1 1 /8" RADIUS
N N
5' 1 5'
EXPANSION JOINT
EDGE DETAIL
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11-12-21
WET POND
SCM # 1
REVISIONS
5/10/22 - DEQ COMMENTS
FILE NO. 2021-028
HORZ. SCALE:
1"=100'
VERT. SCALE:
NONE
BUT GOD, WHO IS RICH IN MERCY, BECAUSE OF HIS GREAT LOVE THAT HE HAD FOR US, MADE US ALIVE WITH CHRIST EVEN THOUGH WE WERE DEAD IN TRESPASSES. YOU ARE SAVED BY GRACE! EPH. 2:4-5
CE-22