SW5210603_Plansheet - SCM Detail_20210622

3 2.53 FT.
�1 FREEBOARD
II WQV
FOREBAY
ENTRANCE 255.00
10-YR STORM 263.25
1-YR STORM 262.14
TEMP. POOL 261.47
PERMANENT POOL 260.00
1 FOREBAY 1
EXIT 259.0
3
1F_
BOTTOM
POND 255.00
WET DETENTION POND PROFILE
NOT TO SCALE
18" RCP
INV. OUT 260.0
2'x3' DROP INLET
WITH TRASH RACK
TOP 263.00
4" PVC ORIFICE
INV IN. 260.00
(SEE DETAIL)
BOTTOM
OF BOX
260.00
3
1�
6: 1
VEGETATED
SHELF
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.
TOP OF
DAM 264.00
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VEGETATED SHELF LANDSCAPE PLAN
VEGETATED SHELF = 1,728 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.
BELOW PERMANENT POOL
Botanical Name Common Name QTY.
Iris virginica Blue flag iris 144
Helianthus augustifolius Swamp Sunflower 144
Peltandra virginica Arrow arum 144
POND SIDE SLOPES
Vegetate w/Centipede Seed @ a rate of
60 lbs./Ac.
58
1-00
255� 2256 255
2 260
261
262--1
__,-264-
,�26,5,
26
261
--
SCALE: 1 " = 20'
20 40 50 60 70 80
48 F 18"Cp F S
0.5% W'`C
_
V. 25-
1 p� WIDE /
CONIC
WEIR 1
263.5
°n
IFOUND WWMONUMENT
N 79573943'
E2 78352'
l
INV.
±259.80 / f
SANDPIPE SHALL
BE CONNECTED 2.5'
TO THE BOX
a
STAGE/STORAGE TABLE
STAGE
ELEVATION
CONTOUR
AREA (SF)
INCREMENTAL
STORAGE (CF)
TOTAL
STORAGE (CF)
0
260.00
7.176
0
0
1.00
261.00
9,029
8,103
8,103
1.47
261.47
9,828
4,431
12,534
2.00
262.00
11,001
10,015
18,118
3.00
263.00
13,024
12,013
30,130
4.00
264.00
15,104
14,064
44,194
(SCH 40 PVC)
a
6" MIN.
�a
4" PVC CAP WITH
SCREW TYPE PLUG
TOP ELEV. 261.00
NORMAL POOL =
INV. ELEV. 260.00
BOTTOM ELEV. 259.50
PVC CAP W/2" HOLE
DRILLED IN CAP.
NOTE:
CONTRACTOR TO COMPACT BOTTOM OF POND TO
ENSURE INFILTRATION IS LESS THAN 0.01 IN./HR.
NOTE:
A PORTABLE PUMP SHALL BE USED FOR PUMP
DOWN AND MAINTENANCE.
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SEAL
19843
''FNGINEE�.�`�:
CHAEL 5��•�`•
' 6-3-21
STORMWATER
WET POND DETAIL
REVISIONS
FILE NO. 2021-019
HORZ. SCALE: 1" = 50'
VERT. SCALE: 1" = 5'
CE-04
LET ME GET YOU SOMETHING TO EAT, SO YOU CAN BE REFRESHED AND THEN GO ON YOUR WAY...... GENESIS 18:5