SW4240501_Plansheet - SCM Detail_20240819

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ENGINEER'S CERTIFICATION OF STORMWATER QUALITY CONTROL
W P F R D B � 6 5 0 P � 1 6' _ _ - _ I CERTIFY THAT, PURSUANT TO GENERALLY ACCEPTED ENGINEERING STANDARDS ,► LEGEND
IN THE COMMUNITY, IT IS MY PROFESSIONAL OPINION THAT RUNOFF FROM THE �� �� Gj� Gj SITE
9 � �- FIRST INCH OF RAINFALL IS CONTROLLED BY A PERMANENT ENGINEERED ,♦.�``N CARO ����� F-F FACE-OF-CURB TO FACE-OF-CURB
_ STORMWATER QUALITY CONTROL THAT HAS BEEN DESIGNED TO MEET OR ♦. f�1- O� O� /41 AUE ACCESS & UTILITY EASEMENT
EXCEED THE REQUIREMENTS IN THE NORTH CAROLINA DEPARTMENT OF ♦ O ESS/
ENVIRONMENTAL QUALITY ST RMWATER DESIG AE ACCESS EASEMENT
\ = SEAL FFE FINISHED FLOOR ELEVATION p
I P.E. SIGNATURE : 10727
MAE MAINTENANCE & ACCESS EASEMENT
:Z 2� SDE SIGHT DISTANCE EASEMENT ��O ra
DATE AUGUST 19, 2024 �'� 'p FNGI NEB ���''' oo DISTURBED AREA 66 -7 yD
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/ 10' MAINT. BED � C�P,�`. >>>> DIVERSION BERM C'j n r
CH S
/ \ �''••►n►►►►••�`, W EX. WATER � 0') �0�
P EX. POWER
\ EX. COMMUNICATION
\ - GAS - EX. GAS VICINITY MAP-
WATER
,��,,••""►►•.,�� ® VALVE 1" = 2000'
LNG ) OW W \ \ ENGINEER'S CERTIFICATION OF STORMWATER QUANTITY CONTROL .�`,�N CARO �i, ❑ TELEPHONE PEDESTAL
W W 5H�LF 96� W W THE STORMWATER CONTROL STRUCTURE(S) SHOWN ON THIS PLAN IS (WILL BE) ♦♦ °� LESS/ UTILITY POLE
W W W W W W W W W W W ♦ I, �-
N DESIGNED TO REDUCE THE POST-DEVELOPMENT 1-YR, 24 HOUR STORM EVENT TO ♦ _ � ti
`^ \ W W W W W W W W W ♦ /1� SIGN
O �`P PRE-DEVELOPMENT RATES. ♦ G SEAL
: C. GUY WIRE
I 1 10727
/ I P.E. SIGNATURE
F I R\ AUGUST 19 2024 ''•�'Q� �
DATE , GI NEE P-��•�'
W W C�-�.•` POST-CONSTRUCTION MAINTENANCE
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FO EBAY MAIN •.,S Z18 .N W W I CONSTRUCTION SEQUENCE 1. IMMEDIATELY AFTER THE WET POND IS ESTABLISHED, THE
y W PLANTS ON THE VEGETATED SHELF AND PERIMETER OF THE
POOL y W 1. OBTAIN GRADING PERMIT BASIN WILL BE WATERED TWICE WEEKLY IF NEEDED, UNTIL THE
PLANTS BECOME ESTABLISHED (COMMONLY SIX WEEKS).
OF 2. INSTALL EROSION CONTROL MEASURES AS SHOWN ON EROSION 2. NO PORTION OF THE WET POND WILL BE FERTILIZED AFTER THE
�0' wQ VO�� �'^$ ;� � W I o CONTROL PLAN. L RZVEIT IS RQUIRED TO ESTABLISH
9 THE PLANTS ON THE VEGETATED SHELF.Mq�NT M 96 �,� W I z 3. COMPLETE GRADING FOR WET POND. POND WILL FUNCTION AS 3. STABLE GROUNDCOVER WILL BE MAINTAINED IN THE DRAINAGE
eFiyc 370 _ _ W W W �I SKIMMER BASIN DURING CONSTRUCTION. AREA TO REDUCE THE SEDIMENT LOAD TO THE WET POND.
4. IF THE POND MUST BE DRAINED FOR AN EMERGENCY OR TO
W W W W \ I\
4. AFTER COMPLETION OF CONSTRUCTION, REGRADE WET POND TO PERFORM MAINTENANCE, THE FLUSHING OF SEDIMENT THROUGH
i W W DESIGN STANDARDS, REMOVING ANY DEPOSITED SEDIMENT. SEED THE EMERGENCY DRAIN WILL BE MINIMIZED AS MUCH AS
DISTURBED AREAS AND SEED VEGETATIVE SHELF. POSSIBLE.
5. ONCE A YEAR, A DAM SAFETY EXPERT SHOULD INSPECT THE
�p �� ) N 5. AFTER STABILIZATION OF DISTURBED AREAS, REMOVE EMBANKMENT.
F 0 cp. / SURROUNDING EROSION CONTROL DEVICES. 6. THE MEASURING DEVICE USED TO DETERMINE THE SEDIMENT
Q �cO �
0 6. COMPLETE AS-BUILT OF WET POND. DEPTH READING AND NOT READILY PENETRATE INTO
24
� ACCUMULATED SEDIMENTS.
�
25 \
26 \� - \
27
LANDSCAPE PLAN
\ VEGETATED SHELF
28 --V\ ✓\ I \ VEGETATED SHELF (PLAN VIEW) W W W W W
\ \ 1 I \ \ W W W W
TOTAL AREA = 1289 SQFT
r 108 - WHITE TURTLEHEAD (1-QT)
108 - SCARLET ROSEMALLOW (1-QT)
WET POND #1 107 - GREAT BLUE LOBELIA (1-QT) .
1" = 20' DAM STRUCTURE (FRONT AND BACK)
NON-CLUMPING, TURF GRASS - HYBRID BERMUDA
2
VEGETATED SHELF: 6
- 6' MIN. WIDTH
- MAX SLOPE: 6H 1 V
- VEGATATION: 2' TYPICAL VEGETATED SHELF
MIN. 3 DIVERSE,
HERBACEOUS, NATIVE SPECIES PLANTING PLAN
- 50 PLANTS PER 200 SF OF SHELF NTS
INV OUT = 962.00
3' DIA. POND RISER W/ TRASH
RACK, ANTI-VORTEX DEVICE
RIPRAP DIS. PAD CREST = 964.0 MIN. 10'
L = 8' 1 .5" ORIFICE W/ TEE = 963.1
W = 6' 1 .25" ORIFICE W/ TEE = 962.0 7'x7' ANTI-SEEP
CLASS A RIPRAP 6" DEWATERING VALVE = 955.0
966.0 COLLAR
18" STORM OUT = 952.8
24' STORM 961 .5 100-YEAR ELEV = 964.75
w 5' WI D TH
0
`o '� FOREBAY /� ��, WQ VOLUME = 962.0 - 963.10
RIPRAP DIS. PAD
9 5 9.0 _
PERM POOL ELEV = 956.0 - 962.0 L - 8
>_ 958.5 W = 6'
w
of
VEGETATED SHELF = 961 .0 - 962.0 18" STORM CLASS A RIPRAP
SED STORAGE SEDIMENT STORAGE = 955.0 - 956.0
of
958.0 0o�
z G,°000 000 0 0 000 0 0 0
o J PRELIMINARY - NOT FOR CONSTRUCTION
w 1
1 WET POND #1 DETAIL SHEET
WET DETENTION POND DETAIL KEY TRENCH TO BE CONSTRUCTION PLANS
5 EXCAVATED TO STABLE
NTS SUB-SOIL; FILLED WITH RESERVE AT OLD HOLLOW
COMPOVED ACTEDMTOERIAL 95 SD. CA YP WALKERTOWN LLC
PROCTOR, MIN. 5' DEPTH. ° �FEssoo� OLD HOLLOW RD. (NC-66)
.4` Q' / '�., KERNERSVILLE TOWNSHIP
cl) FORSYTH COUNTY, NORTH CAROLINA
Q 10
SEAL = DATE: 2024-03-08 SCALE: NOTED 0 - - - SHEET: 9 OF 20
U) 10727
;Z 2:
°� FNGINE� HUGH CREED ASSOCIATES, INC., P.A.
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N �' ,,,,�5'Z•••00 P,,,, OWNER/DEVELOPER:
CONSULTING ENGINEERS 8c LAND SURVEYORS
rn In Ir YP WALKERTOWN, LLC
i 0 0 3410 OWLS ROOST RD. P.O. BOX 9623 PHONE: (336) 275-9826
I
GREENSBORO, NC 27410 1306 W. WENDOVER AVE. OR (336) 275-8084
° �'
Na_ C/O ROBIN YAUN GREENSBORO, N.C. 27408 FIRM LICENSE #C-0551
o .. a AUGUST 19, 2024 CO ROBINC�?CANDRBUILDERSNC.COM E-MAIL: [e-mail]
CN (336) 669-7651
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