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NCDEQ Stormwater Design Manual
Environmental
Quality
OUTLET STRUCTURE
(a) DRAWDOWN TEMPORARY
POOL IN TWO TO FIVE DAYS
(b) DISCHARGE RUNOFF FROM
1-YR, 24-HR STORM TO MINIMIZE
HYDROLOGIC IMPACTS
TEMPORARY POOL
MAIN POOL
---------------
Figure 3: Wet Pond Example: Cross -Section View 2
VEGETATED SHELF
MINIMUM WIDTH: 6 FT
MAXIMUM SLOPE:6 H: 1 V
VEGETATED SIDE SLOPES
RECOMMENDED SLOPE: 3 H : 1 V
TRASH RACK FRONT AND BACK EMBANKMENT SLOPE
REQUIRED REQUIRED TO BE VEGETATED
6' MIN. EMBANKMENT
:LF VVII TH MINIMUM WIDTH: 10 FT FOR
MAINTENANCE ACCESS
PROPOSED GRADE
OUTLET PIPE
EXISTING GRADE
All
DEWATERING METHOD
WET PONDS SHALL HAVE A METHOD TO DRAW DOWN STANDING WATER TO
FACILITATE MAINTENANCE AND INSPECTION
MIN. 6'SEDIMENT (E.G., SKIMMER OR PUMP)
STORAGE
Figure 4: Wet Pond Example: Outlet Structure
TRASH RACK (REQUIRED)
WEIR (OR OTHER METHOD)
TO ESTABLISH
RISER CREST
\
ORIFICE
OUTLET TO ESTABLISH TEMPORARY POOL
NORMALPOOL
MUST DRAW DOWN •.
TEMPORARY POOL IN '
TWO TO FIVE DAYS NORMAL POOL
Y
I I
1 3
I I
I 1
OUTLET PIPE
I I
I I
DEWATERING METHOD
I
WET PONDS SHALL HAVE — — — — — —
METHOD TO DRAW DOWN
STANDING WATER TO
FACILITATE MAINTENANCE
AND INSPECTION (E.G.,
SKIMMER OR PUMP) •� .
ANTI -FLOTATION SLAB ANTI -SEEP MEASURES
ARE RECOMMENDED
C-3. Wet Pond 5 Revised: 11-23-2020
C'.Environmental
NCDEQ Stormwater Design Manual Quality
Figure 1: Plan View of an LS-FS Adjacent to a Riparian Buffer
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Footer
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C-9. Level Spreader -Filter Strip 2 Revised: 11/20/2020
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35o 5' 34" N
Soil Map —Craven County, North Carolina
(Fulcher's Point Dredge Site)
314450 314490 314530 314570
�` Soil'm i�y'n t he v5liei at this scale.
35o 5' 23" N \\ I
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Meters N
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Map projection: Web Mercator Conermordinates: WGS84 Edge tics: lfrM Zone 18N WGS84
usoA Natural Resources Web Soil Survey
Conservation Service National Cooperative Soil Survey
314610
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1 /4/2024
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Soil Map —Craven County, North Carolina
Fulcher's Point Dredge Site
Map Unit Legend
Map Unit Symbol
Map Unit Name
Acres in AOI
Percent of AOI
Se
Seabrook loamy sand
0.2
3.2%
TaB
Tarboro sand, 0 to 6 percent
slopes
0.2
3.2%
Ud
Udorthents, loamy
6.4
93.5%
W
Water
0.0
0.0%
Totals for Area of Interest
6.8
100.0%
USDA Natural Resources Web Soil Survey 1/4/2024
Conservation Service National Cooperative Soil Survey Page 3 of 3
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