NCC220250_Site Plan or Location Map_20220114

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WS/FC EROSION CONTROL NOTICE
PLANS APPROVED FOR CONSTRUCTION
LEVI NATHANIEL PRESTON
TEMPORARY SKIMMER
t►y=11911►T11=11►1r MT 111►F3
(SIZED FOR STAGE 1)
DISTURBED AREA=4.77 AC
DRAINAGE AREA=5.00 AC
REQ'D VOLUME=8,586 CF
Q 10=CXlxA
(0.25x5.5 IN/HRx5.00 AC)=6.9
REQ'D SURFACE AREA=Q10x325=
6.9x325=2,243 SF
SURFACE AREA LENGTH=85'
SURFACE AREA WIDTH=45'
WEIR LENGTH=8'
BOTTOM OF BASIN=815.0
SURFACE AREA=818.0
TOP OF DAM=819.0
DEPTH OF STORAGE=3'
SURFACE AREA PROVIDED=2,387 SF
SURFACE AREA ELEVATION=815.0
VOLUME PROVIDED=8,589 CF
VOLUME ELEVATION=817.85
/ y 2.0" SKIMMER W/ 1.75" ORIFICE
4 I��Igr/ L� / �-'�259.42`T'0T�LA �47
DEWATRINTIME=297DAY//I-----
TEMPORARY SKIMMER
_ _ SEDIMENT BASIN #3
r / / _ _ J�aqu\ ,/ / f/ / D /r // \ \ /I / - _ (SIZED FOR STAGE 2)
- - - \ / O/ / / I / / ?� o� \ - \ DISTURBED AREA=1.80 AC
��f/ JJ `ST(i�,/ DRAINAGE AREA=1.91 AC
REQ'D VOLUME=3,240 CF
-840-
Q10=CxIxA
W \ \\\� / / / �� (0.25x5.5 IN/HRx1.91 AC)=2.6
_ W \\\ / o / / / i / / / e1 ' \ \
------ m REQ'D SURFACE AREA=Q10x325=
2.6x325=845 SF
SURFACE AREA LENGTH=66'
Z❑ =i \ \ \ / / / / szo / / / - \ \ I / SURFACE AREA WIDTH=37'
\x' / / ,% /' / / / / / / ' �' �' 1 I WEIR LENGTH=8'
\ BOTTOM OF BASIN=812.0
�D /__,� /// /////��% ��/��� -i \\ /\ \\ ` SURFACE AREA=814.0
-\---- TOP OF DAM=815.0
F ' / / ' // / ' /� \�---- DEPTH OF STORAGE=2'
, �� / ��'� 1 X =X SURFACE AREA PROVIDED=1,665 SF
E� i m /' / / / / i ja°4� SURFACE AREA ELEVATION=812.0
-A, VOLUME PROVIDED=3,241 CF
I °-DAVIDPFHARTNESSAND-----
// /' , _�/�� /�� //////// / _ \ WAYNE_E_WEB-- - VOLUME ELEVATION=813.64
/ , /� / / --- �\ - \ -
_� \ \ \ ROBERTANTHOMY-MA-TTHEWS, 2.0" SKIMMER W/ 1.0" ORIFICE
�= / / / �)J / / /' ',/ // / / \ TI�USTEESOFTHEAPofElUDED - DEWATERING TIME=3.43 DAYS
AND RESTATED-WAYN- E I�V=R ` -
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TEMPORARY SKIMMER
t►y=11911►Til=11►1r MT 111►F.,yj
(SIZED FOR STAGE 1)
DISTURBED AREA=7.58 AC
DRAINAGE AREA=9.20 AC
REQ'D VOLUME=13,644 CF
Q10=CXlXA
(0.25x5.5 IN/HRx9.20 AC)=12.7
REQ'D SURFACE AREA=Q10x325=
12.7x325=4,128 SF
SURFACE AREA LENGTH=141'
SURFACE AREA WIDTH=80'
WEIR LENGTH=12'
BOTTOM OF BASIN=772.0
SURFACE AREA=773.0
TOP OF DAM=778.0
DEPTH OF STORAGE=4'
SURFACE AREA PROVIDED=4,169 SF
SURFACE AREA ELEVATION=770.00
VOLUME PROVIDED=21,172 CF
VOLUME ELEVATION=776.00
3" SKIMMER W/ 2.5" ORIFICE
DEWATERING TIME=2.93 DAYS
TEMPORARY SKIMMER
t►y=11911►Til=11►1r MT 111►FMI!
(SIZED FOR STAGE 1)
DISTURBED AREA=12.7 AC
DRAINAGE AREA=12.7 AC
REQ'D VOLUME=22,867 CF
Q10=CxIxA
(0.25x5.5 IN/HRx12.7 AC)=17.5
REQ'D SURFACE AREA=Q10x325=
17.5x325=5,688 SF
SURFACE AREA LENGTH=178'
SURFACE AREA WIDTH=134'
WEIR LENGTH=16'
BOTTOM OF BASIN=748.5
SURFACE AREA=748.5
TOP OF DAM=759.0
DEPTH OF STORAGE=3.5'
SURFACE AREA PROVIDED=7,001 SF
SURFACE AREA ELEVATION=748.5
VOLUME PROVIDED=31,911 CF
VOLUME ELEVATION=752.0
4" SKIMMER W/ 3" ORIFICE
DEWATERING TIME=2.66 DAYS
THE INSIDE SLOPES OF THE SKIMMER
SEDIMENT BASIN SHALL BE STABILIZED
WITH NORTH AMERICAN GREEN S75
(STAPLE PATTERN D) EROSION
CONTROL MATTING UPON COMPLETION
OF CONSTRUCTION.
/X /`CpISQy�Bp I II % B
TEMPORARY SKIMMER ,
SEDIMENT BASIN #1/ /
_
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This plan complies with Chapter C, Article 4 - Erosion Control of
the Village of Clemmons Unified Development Ordinance. A
printed set of the stamped/approved plans must be kept on the
construction site for reference when installing required erosion
control measures.
matthewo 1/10/2022 1:17:37 PM
SITE DATA
OWNER: PIN: 5892-58-2261
DEVELOPER: PORTION OF PIN: 5892-57-8680
PORTION OF PIN: 5892-57-0376
OLD MILL SUBDIVISION, LLC
3411 HEALY DRIVE, SUITE A
WINSTON SALEM, NC 27103
PHONE: [phone]
TODDISENHOUR
ENGINEER: ALLIED DESIGN, INC.
4720 KESTER MILL ROAD
WINSTON-SALEM, N.C. 27103
PHONE: [phone]
FAX: [phone]
STEVE M. CAUSEY, P.E.
[e-mail]
STAGE 1 CONSTRUCTION SEQUENCE
1. OBTAIN GRADING/EROSION CONTROL PERMIT AND PLAN APPROVAL FROM THE
FORSYTH COUNTY INSPECTIONS DIVISION.
2. CONTRACTOR IS REQUIRED TO FILL OUT AND SUBMIT AN ELECTRONIC NOTICE
OF INTENT (e-NOI) FORM. ALL CONTRUCTION ACTIVITIES ARE REQUIRED TO
FOLLOW THE NEW NCGO1 PERMIT.
3. CONTACT EROSION CONTROL INSPECTOR TO ESTABLISH A MANDATORY
PRECONSTRUCTION CONFERENCE AND AN INSPECTION SCHEDULE.
4. THE CONTRACTOR SHALL CONDUCT SELF -INSPECTIONS OF THE EROSION AND
SEDIMENT CONTROL MEASURES AND COMPLETE THE FOLLOWING COMBINED
SELF -INSPECTION FORM FOUND ON THE DEMLR WEBSITE;
(http://deq. nc.gov/about/divisions/energy-mineral-land-resources/erosion-sediment-control/forms)
COMPLETE INSPECTIONS FORMS SHALL BE KEPT ON -SITE AND AVAILABLE FOR
INSPECTION AT ALL TIMES. IT IS RECOMMENDED THAT A COPY BE KEPT IN A
PERMITS BOX. SELF -INSPECTIONS FOR STABILITY AND FUNCTION OF EROSION
AND SEDIMENTATION CONTROL MEASURES ARE TO BE PERFORMED AT LEAST
ONCE EVERY SEVEN CALENDAR DAYS AND WITHIN 24 HOURS OF EACH
RAINFALL EVENT OF GREATER THAN 0.5 INCH. ANY NEEDED REPAIRS SHALL BE
MADE IMMEDIATELY TO MAINTAIN MEASURES AS DESIGNED. ALL EROSION AND
SEDIMENTATION CONTROL MEASURES SHALL BE MAINTAINED AS SPECIFIED IN
THE CONSTRUCTION DETAILS ON THIS PLAN. A RAIN GAUGE SHALL BE
INSTALLED AT THE PROJECT SITE FOR MONITORING.
5. A COPY OF THE EROSION AND SEDIMENT CONTROL PERMIT, A HARD COPY OF
THE PLAN, AND ALL SELF -INSPECTION RECORDS MUST BE KEPT ON -SITE,
PREFERABLY IN A PERMITS BOX, AND ACCESSIBLE AT ALL TIMES FOR
INSPECTION.
6. INSTALL THE CONSTRUCTION ENTRANCE AND SEDIMENT FENCE ALONG EDGE.
7. BEGIN CLEARING AND GRUBBING JUST ENOUGH TO ALLOW FOR INSTALLATION
OF THE SEDIMENT SKIMMER BASINS AND SEDIMENT FENCE. STOCKPILE
TOPSOIL ON -SITE WITHIN AREAS PROTECTED BY EROSION CONTROL
MEASURES FOR LATER DISTRIBUTION.
8. THE SEDIMENT SKIMMER BASINS CAN NOW BE INSTALLED BEGINNING WITH
THE REAR DAM ALONG WITH CORRESPONDING COMPONENTS.
9. ONCE THE DAM FOR THE SEDIMENT SKIMMER BASINS HAVE BEEN INSTALLED,
THEN SEDIMENT FENCE SHOULD BE INSTALLED AT THE TOE OF SLOPE WITH
THE OCCASIONAL SECTION OF SEDIMENT FENCE WITH STONE STABILIZATION.
10.ONCE THE SEDIMENT SKIMMER BASINS HAVE BEEN INSTALLED AS SHOWN
ABOVE, THEN CONSTRUCTION OF DIVERSION DITCHES AND BERMS CAN BEGIN.
11.INSTALL TEMPORARY SLOPE DRAINS INTO SEDIMENT SKIMMER BASINS AS
SHOWN.
12. BEGIN DEMOLITION OPERATIONS AS SHOWN ON SHEET C1.1
13. SEED EMBANKMENTS AND DISTURBED AREA OF BASINS, DITCHES, AND BERMS
UPON COMPLETION OF CONSTRUCTION. PERMANENT GROUNDCOVER SHALL
BE ESTABLISHED IN 15 WORKING DAYS OR 90 CALENDAR DAYS, WHICHEVER IS
SHORTER. HOWEVER, NPDES GROUNDCOVER REQUIREMENTS TAKE
PRECEDENCE.
14.TEMPORARY SEDIMENT BASINS TO REMAIN IN PLACE UNTIL THE SITE DRAINING
TO THESE BASINS HAS BEEN SUFFICIENTLY STABILIZED.
100
VICINITY MAP
" NOT TO SCALE
KEY NOTES
OA NEW TEMPORARY CONSTRUCTION ENTRANCE/EXIT.
OB NEW TEMPORARY SEDIMENT FENCE.
ONEW TEMPORARY SEDIMENT FENCE WITH STONE OUTLET.
O NEW TEMPORARY DIVERSION BERM.
ONEW TEMPORARY SKIMMER SEDIMENT BASIN. THE INSIDE
SLOPES OF THE SKIMMER SEDIMENT BASIN SHALL BE
STABILIZED WITH NORTH AMERICAN GREEN S75 EROSION
CONTROL MATTING UPON COMPLETION OF CONSTRUCTION.
O NEW COIR, JUTE OR BURLAP BAFFLES.
OG NEW TEMPORARY EMERGENCY SPILLWAY.
OH NEW TEMPORARY 10'x10' CLASS "B" RIP RAP OUTLET
STABILIZATION PAD.
O NEW TEMPORARY SKIMMER DEVICE.
JO NEW TEMPORARY 18" CPP SLOPE DRAIN. SLOPE DRAINS SHALL
BE INSTALLED / RE -INSTALLED ON SLOPES AT 8 FT INTERVALS
MEASURED VERTICALLY.
OK NEW OUTLET STRUCTURE AND OUTLET BARREL. REFER TO
SHEET SWM4 AND SWM5 FOR DETAILS.
OL NEW PRECAST HEADWALL. NCDOT STANDARD DETAIL 838.80.
OM NEW OUTLET STRUCTURE AND OUTLET BARREL. REFER TO
SHEET SWM7 AND SWM8 FOR DETAILS.
ON NEW TEMPORARY ON -SITE CONCRETE WASHOUT STRUCTURE
WITH LINER. PROVIDE CLEARLY MARKED SIGNAGE NOTING
DEVICE LOCATION.
NEW POTENTIAL TOPSOIL STOCKPILE AREA.
EXISTING TREES/WOODS TO BE REMOVED TO LIMITS OF
DISTURBANCE. EXISTING TREE TO BE REMOVED TO THE
STUMP. NO STUMPS MAY BE REMOVED UNTIL STAGE 1
EROSION CONTROL MEASURES HAVE BEEN INSTALLED AND
APPROVED BY EROSION CONTROL INSPECTOR.
EXISTING TREE SAVE AREA (96,650 SF). THE TSA MUST BE
PROTECTED FROM DIRECT AND INDIRECT ROOT DAMAGE, AND
TRUNK AND CROWN DISTURBANCE. THE FOLLOWING
STANDARDS SHALL APPLY:
(A) THE TREE SAVE AREA (TSA) SHALL INCLUDE ALL AREA
LOCATED WITHIN THE CRITICAL ROOT ZONE.
I CONSTRUCTION SITE ACTIVITIES, SUCH AS PARKING,
MATERIAL STORAGE, DIRT STOCKPILING, CONCRETE
WASHOUT, AND OTHER SIMILAR ACTIVITIES, SHALL NOT BE
PERMITTED WITHIN A TREE SAVE AREA (TSA).
I PROTECTIVE BARRIERS SHALL BE INSTALLED AROUND THE
TREE SAVE AREA (TSA) AS NECESSARY PRIOR TO THE
ISSUANCE OF A GRADING PERMIT.
EXISTING TREES/WOODS TO BE
REMOVED TO LIMITS OF DISTURBANCE.
EXISTING TREE TO BE REMOVED TO THE
STUMP. NO STUMPS MAY BE REMOVED
UNTIL STAGE 1 EROSION CONTROL
MEASURES HAVE BEEN INSTALLED AND
APPROVED BY EROSION CONTROL
INSPECTOR.
EXISTING SITE CONDITIONS ARE SHOWN
ON THIS SHEET. REFER TO SHEET C1.1
FOR DETAILED INFORMATION ON
DEMOLITION/REMOVAL REQUIREMENTS.
GRAPHIC SCALE
so 100 200
( IN FEET )
1 inch = 100 ft»
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STAGE 1
EROSION
CONTROL
PLAN
SHEET
C2.2