20240924_Mine_Maps

1 2 3 14 15 6 17 8
PRU PIN RO KAN TAII IN I PO A A A
A P MIT RAWIN A
HAWKINS EAST
MITCH LL CO NTY, NO TH CA OLINA
J LY 202
B B
LIST OF DRAWINGS
N DRAWING NUMBER DRAWING TITLE N
1 TITLE SHEET
2 EXISTING CONDITIONS
3 SITE DEVELOPMENT PLAN N,
Ingalls j3ai;
ck 4 FINAL GRADING PLAN AND STORMWATER MANAGEMENT PLAN
5 EROSION AND SEDIMENT CONTROL PLAN
6 CROSS SECTIONS .
7 MISCELLANEOUS DETAILS I y5:
8 MISCELLANEOUS DETAILS II SITE
SITE 9 STORMWATER MANAGEMENT DETAILS I � " ' r
C C
k , 10 STORMWATER MANAGEMENT DETAILS II
demisnd
11 EROSION AND SEDIMENT CONTROL DETAILS
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Kalmia m+F w t :,a ra
r��-1cy 12 EROSION AND SEDIMENT CONTROL DETAILS II
13 EROSION AND SEDIMENT CONTROL NOTES Iu
Spruce Pow 14 EROSION AND SEDIMENT CONTROL NOTES II
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.Is d�9►+wray�9
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Grassy Creek
SOURCE: NORTH CAROLINA GEOSPATIAL PORTAL, WWW.NCONEMAP.COM SOURCE: ©2024 MICROSOFT CORPORATION
VICINITY MAP LOCATION MAP
SCALE: NTS SCALE: 1" = 2000'
D D
4 DETAIL NUMBER
9 DRAWING ON WHICH ABOVE
DETAIL IS PRESENTED
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0
DETAIL NUMBER
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DRAWING ON WHICH 4 DETAIL
ABOVE DETAIL WAS
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z FIRST REFERENCED 3 TITLE OF DETAIL
Q E B 07/03/2024 REVISED FOR PERMITTING MAF KF E
F SCALE: 1" = 2'
w PREPARED FOR: A 03/21/2024 ISSUED FOR PERMITTING MAF KF
EXAMPLE: DETAIL NUMBER 4 PRESENTED ON
DRAWING NO. 9 WAS REFERENCED FOR REV DATE DESCRIPTION DRN APP
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Z ��I S I B E LCO THE FIRST TIME ON DRAWING NO. 3.
;ai��•d ��ji ABOVE SYSTEM ALSO APPLIES TO SECTION IDENTIFICATIONS. %4 1'
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_ 3426 TORINGDON WAY SUITE 106 �60VE
DETAIL IDENTIFICATION LEGEND F
� ®i�% � COI1SUIta.I1tS OF NC, PC
o �" �� 1300 SOUTH MINT STREET,SUITE 300
a = - CHARLOTTE NORTH CAROLINA 28277 CHARLOTTE,NC 28203USA p
3a1 � PHONE:[phone] ° 24 2024
it NC LICENSE NO.:C-3500
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TITLE: R
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TITLE SHEET
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PROJECT: HAWKINS EAST DISPOSAL AREA
PREPARED BY: ROCK AND TAILINGS DISPOSAL
Y
EOSYNTEC CONSULTANTS OF NC P. C. SITE. SPRUCE PINE ROCK
W F G MITCHELL COUNTY, NORTH CAROLINA F
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1300 SOUTH MINT STREET, SUITE 300
m `, �P�N'�ARo<, , DESIGN BY: VMD/KF DATE: JULY 2024
consultants
CHARLOTTE , NORTH CAROLI NA 28203
�QQa tiq�.:9 �= DRAWN BY: MAF PROJECT NO.: GC9914.09
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N m 04228 : CHECKED BY: OT/KF FILE: GC9914.09-001.DWG
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7 F- PERMIT DRAWINGS �' ��'•F/y r •' �a REVIEWED BY: VMD/OT DRAWING NO.:
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LEGEND
PROPERTY LINE (NOTE 1)
DUMP SITE BOUNDARY Map Unit Symbol Map Unit Name
AcF Ashe-Cleveland-Rock outcrop complex, 30 to 95 percent slopes, very bouldery
ORIGINAL BORING LOCATION
BtF Buladean-Chestnut complex, central mountain, 50to 95 percent slopes, stony
(NOTE 2)
CaD Cashiers sandy loam, 15 to 30 percent slopes, stony
EXISTING GROUND CONTOUR
w
w (NOTE 3) CaE Cashiers sandy loam, 30 to 50 percent slopes, stony
u)
(D CaF Cashiers sandy loam, 50to 95 percent slopes, stony
z STREAM (USGS DATA SET)
N
E CeE Chandler-Micaville complex, 30to 50 percent slopes, stony
-6� B.UMR.14 E
2946.82 BORING LOCATION (OCT 2023) B 07/03/2024 REVISED FOR PERMITTING MAF KF
CeF Chandler-Micaville complex, 50to 95 percent slopes, stony
w A 03/2112024 ISSUED FOR PERMITTING MAF KF
EXISTING SEDIMENT BASIN 0 150, 300'
rz/ /7/-/ CsD Cullasaja cobblyfine sandy loam, 8to 30percent slopes, very bouldery REV DATE DESCRIPTION DRN APP
< (NOTE 5)
w
u) EcD Evard-Cowee complex, central mountain, 15 to 30 percent slopes, stony SCALE IN FEET
CD
z EXISTING CULVERT (NOTE 5) 'Ah
14
NOTES:
FeC2 Fannin sandy clay loam, 8to 15 percent slopes, eroded GeosyntecO
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4-4� 4-4`,`,tS1BELC0
WETLAND (NOTE 5)
FeD2 annin sandy clay loam, 15to 30 percentslopes, eroded 71111.0
ogi
1. PROPERTY BOUNDARIES FROM FILES RECEIVED 21 MAY 2024 PROVIDED BY conSUItantS OF NC, PC
< STREAM THREAD (NOTE 5) PeE Pigeon roost-Ed neytown complex, 30 to 50 percent slopes, stony HAWKINS EAST� 1300 SOUTH MINT STREET,SUITE 300
SIBELCO.
< CHARLOTTE, NC 28203 USA
Lu
STREAM (NOTE 5) RE Plott loam, 30 to 50 percent slopes, stony PHONE:[phone]
2. ORIGINAL BORING LOCATIONS FROM FILES RECEIVED 19 JULY 2023 PROVIDED NC LICENSE NO.:C-3500
BY SIBELCO.
-------------- SaB Saunook si It loam., 2 to 8 percent slopes TITLE:
0 25' STREAM BUFFER
3. EXISTING TOPOGRAPHY INFORMATION FROM LiDAR DATA RECEIVED 25 JULY EXISTING CONDITIONS
Scc Saunook si It loam, 8 to 15 percent slopes, stony
u) --------------
2023 FROM SIBEL.CO.
25' WETLAND BUFFER e
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SdD Saunook-Thunder complex, 15 to 30 percent slopes, stony
4. THE PROJECT SITE IS LOCATED IN THE FRENCH BROAD RIVER BASIN. RUNOFF PROJECT:
SURFACE WATER FLOW HAWKINS EAST DISPOSAL AREA
FROM THE PROJECT AREA FLOWS VIA SHEET FLOW TO UNNAMED TRIBUTARIES
TsC Thunder-Saunook complex, 8to 15 percent slopes, very bouldery
z DIRECTION
TO NORTH TOE RIVER AND ULTIMATELY TO THE FRENCH BROAD RIVER. THE ROCK AND TAILINGS DISPOSAL
0 TsD Thunder-Saunook complex, 15 to 30 percent slopes, very bouldery
SOIL CLASS BOUNDARY NORTH TOE RIVER IS DESIGNATED CLASS C AND TR PURSUANT TO 15A NCAC SITE:
w SPRUCE PINE ROCK
0213.0300. THE FRIENCH BROAD RIVER IS DESIGNATED CLASS B PURSUANT TO
z TsE Thunder-Saunook complex, 30 to 50 percent slopes, very bouldery
w F 15A NCAC 02B .03�00.
MITCHELL COUNTY, NORTH CAROLINA F
Un Udorthents, loamy, stony
5. WETLAND, STREAMS, EXISTING SEDIMENT BASINS, AND CULVERTS FROM PLAN "111111j"
DESIGN BY: VMD/KF DATE: JULY 2024
wgc Watauga sandy loam, 8 to 15 percent slopes, stony
TITLED "WETLAND AND STREAM MAP, DELINEATED JULY 1 & NOV 3, 2022" BY CARO
�A
0) Data.,,et,3DEPEIevationPlro6rarr,,GeQ aohk Name5 I nformatoh ........
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Nad: CLEARWATER ENVIRONMENTAL CONSULTANTS OF HENDERSONVILLE, NORTH ,4 ..bVSSSIO'
WgD Watauga sandy loam, 15 to 30 percent slopes, stony S�5tem, ydrogr8JJvvDat8set,.NatbhaI Land(cverDatabwa,, ad DRAWN BY: MAF PROJECT NO.: GC9914.09
Tran�,O=Data�ol Global EcorWitems�11&Cervu,Bur6a,uTl6E�YLine�"d'zkzcUSFSPoac[[Y:3��aturaI CAROLINA, RECEIIVED 19 JULY 2023.
0
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Earth Dal S,Department of State Hum anitarian Inform ation'Unk,"nd NOAA National Center,for
�w WgE Watauga sandy loam, 30 to 50 percent slopes, stony
D E riiironm ental ln�orm;5tl on,q,5�Cqasta I Re h�Plvlo del,D ata refres hed Ap ri�...gV�3� SEAL
-59 1 ­ "' , I - 1. 042284 CHECKED BY: OT/KF FILE: GC9914.09-CO2.DWG
13 lale
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ID
SOIL TABLE USGS TOPO MAP (NTS)
PERMIT DRAWINGS SIGNATURE REVIEWED BY: VMD/OT DRAWING NO.:
2 uj 0 GINe
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13 August 2024 44, DPlll
NOT FOR CONTRUCTION 101111110", APPROVED BY: VMD 2 14
OF
DATE

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BY OTHERS (NOTE 5)
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PROPIOSED BASIN E PANSION
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LEGEND
PROPERTY LINE (NOTE 1)
DUMP SITE BOUNDARY
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A
(NOTE 2)
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EXISTING GROUND CONTOUR
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- - - - - - - - - - -
STREAM (USGS DATA SET)
E B.UMR.14 BORING LOCATION (OCT 2023) B 07/03/2024 REVISED FOR PERMITTING MAF KF E
2946.82
A 03/21/2024 ISSUED FOR PERMITTING MAF KF
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PROPOSED PROJECT
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SCALE IN FEET
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NOTES:
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SIBELCO
WETLAND (NOTE 4)
cons
ultantsOF NC, PC
1. PROPERTY BOUNDARIES FROM FILES RECEIVED 21 MAY 2024 PROVIDED BY
1300 SOUTH MINT STREET,SUITE 300
< STREAM THREAD (NOTE 4.) SIBELCO.
9 CHARLOTTE,NC 28203 USA
U)
< PHONE:704,227,0840
w STREAM (NOTE 4) 2. ORIGINAL BORING LOCATIONS FROM FILES RECEIVED 19 JULY 2023 PROVIDED BY
x NC LICENSE NO.:C-3500
< SIBELCO.
-j
< TITLE:
w
0 -------------- 25' STREAM BUFFER
0- 3, EXISTING TOPOGRAPHY INFORMATION FROM LiDAR DATA RECEIVED 25 JULY 2023
SITE DEVELOPMENT PLAN
FROM SIBELCO.
U) -------------- 25' WETLAND BUFFER
0
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4. WETLAND, STREAMS, EXISTING STORMWATER BASINS, AND CULVERTS FROM PLAN PROJECT: HAWKINS EAST DISPOSAL AREA
SURFACE WATER FLOW TITLED "WETLAND AND STREAM MAP, DELINEATED JULY I & NOV 3, 2022" BY
z DIRECTION CLEARWATER ENVIRONMENTAL CONSULTANTS OF HENDERSONVILLE, NORTH ROCK AND TAILINGS DISPOSAL
CAROLINA, RECEIVED 19 JULY 2023. APPROVED JURISDICTIONAL DETERMINATION
0 SITE:
w — . . — PHASE I RELOCATED STRIEAM OBTAINED FROM UNITED STATES ARMY CORPS OF ENGINEERS, DATED 10 MARCH SPRUCE PINE ROCK
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F EXISTING ROAD F
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5. FINAL MINING LIMITS FROM FILE RECEIVED 4 DECEMBER 2023 FROM SIBELCO.
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DRAINAGE CHANNEL �A C A fi
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RUNON DIVERSION 0
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PLACEMENT OF FILL WITHIN THE DISPOSAL FOOTPRINT. DRAWN BY: MAF PROJECT NO.: GC9914.09
0
0
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EXISTING STREAM
FINAL MINE EXCAVATION LIMITS
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STRUCTURE AND PIPE
ION TIE-IN BY OTHERS (NOTE 4)
ONTROL rl 1N/' 5�
B
B
DRAINAGE CHA
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A Jr (PERIMETER
STORMWATER)
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PROPOSED STORMWATER
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PROPOSED SEDIMENT
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3H I r-ACCESS ROAD _,J
1,539,135 CF ENTRANCE (NOTE 5)
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STRUCTURE
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9 DOWN DRAIN PIPE INLET AT SIDE
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SLOPE DRAINAGE TERRACE PROPOSED
DRAINAGE CHANNEL
�OPOSEDDRAINAGE
K13 � p -a,
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PROPERTY LINE (TYP)
OCATION
9 CHANNEL RELOCATION
SIDE SLOPE DRAINA PHASE I DRAINAGE
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E PERIMETER STORMWATER
E
PROPERTY LINE 25' BUFFER B 07/03/2024 REVISED FOR PERMITTING MAF KF
OFFSET >
w > DRAINAGE CHANNEL A 03/21/2024 ISSUED FOR PERMITTING MAF KF
a- 0 150' 300'
RUNON DIVERSION
REV DATE DESCRIPTION DRN APP
< EXISTING GROUND CONTOUR
w
(NOTE 2) -ST-ST- PROPOSED CULVERT SCALE IN FEET
PROPOSED GROUND CONTOUR
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SIBELCO
EXISTING SEDIMENT BASIN NOTES: consultants OF NC, PC
rz/ zzzlzi
< 1300 SOUTH MINT STREET,SUITE 300
(NOTE 3)
CHARLOTTE,NC 28203 USA
w PHONE:[phone]
x I. PROPERTY BOUNDARIES FROM FILES RECEIVED 21 MAY 2024 PROVIDED BY
< EXISTING CULVERT (NOTE 3) NC LICENSE NO.:C-3500
SIBELCO.
U) TITLE:
0
a- �7 WETLAND (NOTE 3) 2. EXISTING TOPOGRAPHY INFORMATION FROM LiDAR DATA RECEIVED 25 JULY
Cn
0 FINAL GRADING PLAN AND STORMWATER MANAGEMENT PLAN
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(D STREAM THREAD (NOTE 3)
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< 3. WETLAND, STREANIIS, EXISTING SEDIMENT BASINS, AND CULVERTS FROM PLAN PROJECT:
F- i z z STREAM (NOTE 3) HAWKINS EAST DISPOSAL AREA
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z
< CLEARWATER ENVIIRONMENTAL CONSULTANTS OF HENDERSONVILLE, NORTH
ROCK AND TAILINGS DISPOSAL
0 -------------- 25' STREAM BUFFER CAROLINA, RECEIV'ED 19 JULY 2023. APPROVED JURISDICTIONAL
SITE:
DETERMINATION OBTAINED FROM UNITED STATES ARMY CORPS OF SPRUCE PINE ROCK
z
-------------- 25' WETLAND BUFFER ENGINEERS, DATED 10 MARCH 2023.
F MITCHELL COUNTY, NORTH CAROLINA F
4. FINAL MINING LIM:ITS FROM FILE RECEIVED 4 DECEMBER 2023 FROM SIBELCO.
SURFACE WATER FLOW
U) DESIGN BY: VMD/KF DATE: JULY 2024
DIRECTION �A CAR
5. ACCESS ROAD ENTRANCE TO THE DISPOSAL AREA SHALL BE FIELD FIT TO
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0 PHASE I RELOCATED STREAM
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DATE
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23 24
22
12 12
DRAINAGE C
12
HANNEL
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EXISTING MINE
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360 HAWKINS EAST
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DOAN DRAIN PIPE
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,�8�000 ROCK PIPE INLET 20
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LOD
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LOD LOD
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LOD LOD 3E CHANNEL WITH
rl 3"\\�21
PROPERTY LINE (TY -- - - - - - CHECK DAMS
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DOWN DRAIN PIPE INLET AT SIDE �77
TEMPORARY SEEDING, ------60D
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8
TEMPORARY SEEDING, A4140 i
DRAINAGE CHANNEL
ROCK PIPE INLET PROTECTION (TYP)
PERMANENT SEEDING,
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AND MULCHING SEDIMENT
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PHASE I DRAINAGE CHAN
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PROPERTY LINE 25' BUFFER OFFSET ,,.,.,,,,,,,,,.
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LEGEND NOTES:
PROPERTY LINE (NOTE 1) STREAM THREAD (NOTE 3) 1. PROPERTY BOUNDARIES FROM FILES RECEIVED 21 MAY 2024 PROVIDED BY SIBELCO.
- - - - - - - - - - -
PROPERTY LINE 25' BUFFER - - - - - - - - - - - STREAM (NOTE 3)
OFFSET 2. EXISTING TOPOGRAPHY INFORMATION FROM LiDAR DATA RECEIVED 25 JULY 2023 FROM SIBELCO.
SURFACE WATER FLOW 3. WETLAND, STREAMS, EXISTING SEDIMENT BASINS, AND CULVERTS FROM PLAN TITLED "WETLAND AND STREAM MAP, DELINEATED JULY 1 & NOV 3, 2022" BY CLEARWATER
2848 EXISTING GROUND CONTOUR DIRECTION
(NOTE 2) ENVIRONMENTAL CONSULTANT& OF HENDERSONVILLE, NORTH CAROLINA, RECEIVED 19 JULY 2023. APPROVED JURISDICTIONAL DETERMINATION OBTAINED FROM UNITED
RELOCATED STREAM STATES ARMY CORPS OF ENGINEERS, DATED 10 MARCH 2023.
2848 PROPOSED GROUND CONTOUR 4. FINAL MINING LIMITS FROM FILE RECEIVED 4 DECEMBER 2023 FROM SIBELCO. 0 150' 300'
EXISTING ROAD
EXISTING SEDIMENT BASIN
rz/ zz SCALE IN FEET
(NOTE 3) PERIMETER STORMWATER 5. TOTAL NEW PERMITTED DISTURBED AREA IS 77.0 ACRES.
CHANNEL
6. STOCKPILE AND CONTRACTOR STAGING AREAS WILL BE CONTAINED WITHIN THE LIMITS OF DISTURBANCE DEPICTED ON THIS PLAN.
EXISTING CULVERT(NOTE 3)
> RUNON DIVERSION CHANNEL
M 7. TOTAL AREA TO BE STABILIZED VVITH VEGETATION IS 63.0 ACRES.
WETLAND (NOTE 3)
-------------- 8. THE PROJECT SITE IS LOCATED IN THE FRENCH BROAD RIVER BASIN. RUNOFF FROM THE PROJECT AREA FLOWS VIA SHEET FLOW TO UNNAMED TRIBUTARIES TO NORTH
z 25' STREAM BUFFER TOE RIVER AND ULTIMATELY TO 7HE FRENCH BROAD RIVER. THE NORTH TOE RIVER IS DESIGNATED CLASS C AND TR PURSUANT TO 15A NCAC 02B.0300. THE FRENCH
E -------------- BROAD RIVER IS DESIGNATED CLASS B PURSUANT TO 15A NCAC 02B .0300. E
25' WETLAND BUFFER B 07/03/2024 REVISED FOR PERMITTING MAF KF
9. THE PROPOSED CONSTRUCTIOR ENTRANCE IS LOCATED AT NORTHING 812435.0 EASTING 1088773.0 A 05/08/2024 ISSUED FOR PERMITTING MAF KF
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REV DATE DESCRIPTION DRN APP
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EROSION AND SEDIMENT CONTROL SEQUENCING NOTES:
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EROSION AND SEDIMENT CONTROL SYMBOLOGY
1. PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES, A PRE-CONSTRUCTION MEETING WILL BE CONDUCTED IN ORDER TO CONFIRM THE SCOPE AND RE:QUIREMENTS
consultantsOF NC, PC W41,11141111
FOR THE WORK. PROVIDE PRE-DISTURBANCE NOTIFICATION TO THE NCDEQ ASHEVILLE REGIONAL OFFICE OF COMMENCEMENT OF CONSTRUCTION ACTIVITIES.
1300 SOUTH MINT STREET,SUITE 300
OUTLET STABILIZATION STRUCTURE CHARLOTTE,NC 28203 USA
< 2. BEGIN SITE PREPARATIONS. CLEARLY MARK OR DESIGNATE AREAS TO BE PROTECTED, STAKE LOCATIONS OF CLEARING AND GRUBBING, SILT FENCING, AND OTHER PHONE:[phone]
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PERIMETER CONTROLS AS INDICATED IN THE DRAWINGS. NC LICENSE NO.:C-3500
0 0 POROUS BAFFLE TITLE:
0 3. PROTECT AREAS DESIGNATED AS WETLANDS OR WATERS OF THE U.S. IN ACCORDANCE WITH ALL PERMITS AND LOCAL, STATE AND FEDERAL REQUIREME�NTS.
a-
4. PROVIDE CONSTRUCTION ENTRANCES AS REQUIRED TO PREVENT TRACKING SEDIMENT OUTSIDE OF THE LIMITS OF DISTURBANCE. EROSION AND SEDIMENT CONTROL PLAN
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5. CONSTRUCT EXPANDED SEDIMENT BASIN AS INDICATED IN THE DRAWINGS. PROJECT: HAWKINS EAST DISPOSAL AREA
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0 TEMPORARY BERMS.
0 SITE:
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F LAYERS THAT ARE SPREAD WITH TRUCKS AND DOZERS. EACH LIFT SHALL BE SLOPED INTO THE HILLSIDE AND/OR BERMED TO DIRECT STORMWATER TO THE DIVERSION MITCHELL COUNTY, NORTH CAROLINA F
TEMPORARY GRAVEL CONSTRUCTION CHANNELS AND/OR SLOPE DRAINS TO PREVENT EROSION OF THE LIFT FACES.
0 0 0
U) DESIGN BY: VMD/KF DATE: JULY 2024
no-0 no C ENTRANCE-EXIT Digitally
0) 8. PLACE A 20-FT WIDE STORM WATER AND EROSION AND SEDIMENT CONTROL BENCH SHALL BE PLACED EVERY 60 FEET(MINIMUM) IN HEIGHT. 4,\A CA&O///
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DRAWN BY: MAF PROJECT NO.: GC9914.09
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9. STABILIZE CUT/FILL SLOPES WITH TEMPORARY SEEDING/MULCHING, ROLLED EROSION CONTROL PRODUCTS (RECPS), OR EQUIVALENT APPROVED BY THE CLIENT. Katherine Fox
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0
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zli�p 10. IMPLEMENT ADDITIONAL EROSION AND SEDIMENT CONTROLS, AS NECESSARY, AS CONSTRUCTION PROGRESSES AND SITE CONDITIONS CHANGE IN ACCORDANCE WITH Date: CHECKED BY: OT/KF FILE: GC9914.09-CO5.DWG
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THE STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENTAL QUALITY DIVISION OF ENERGY, MINERAL, AND LAND RESOURCES GENERAL PERMIT NIO. NCGO10000
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PERMIT DRAWINGS SICI,,IURE
LD 0 (CGP). (3 REVIEWED BY: VMD/OT DRAWING NO.:
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DISTANCE (FEET)
C A PROFILE C
4 SECTION A-A
1 ACCESS ROAD AND DISPOSAL SEQUENCE:
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3700 PROPOSED FINAL GRADE 2 3700 PLACEMENT OF FILL.
3690
FINAL COVER SYSTEM DETAIL 7 -_. 3690 • TOPSOIL WILL BE STRIPPED AND USED AS TEMPORARY BERMS.
_ _
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3630 3630 PROCEEDING TO THE NEXT BENCH LIFT.
3620
3620 • EACH LIFT SHALL BE SLOPED INTO THE HILLSIDE AND/OR BERMED
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34703470
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3460 3460 0 50' 100,
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VERTICAL SCALE IN FEET
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B SECTION
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ACCESS ROAD DRAINAGE
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RIPRAP D50=18" (16 OZ/SY) LANDSIDE FILTER RELIEF DRAIN
rT DETAIL
B 4 ACCESS ROAD WITH DRAINAGE CHANNEL CONSTRUCTED TOP OF EMBANKMENT EL 3170.0 B
SCALE: 1" = 4'
XREF: GC9914.09X099 81 -
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OUTLET CONTROL STRUCTURE — ———— ——
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0.5' (MIN) 2' (MIN) \
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� OUTLET PIPE INV EL 3157.3
2' MIN. 0/o T=2.9'
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2 DETAIL xx'
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6 FINAL COVER SYSTEM DETAIL ROCK OUTLET PROTECTION 15
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XREF: GC9914.09X098 (SEE NOTE THIS SHEET) d50 = 14", dMAX= 23"
NOTES:
STREAM CENTERLINE 5 DETAIL 1. PRIOR TO INSTALLATION OF NEW PIPE, INSTALL SUITABLE
8-OZ GEOTEXTILE FILTER WRAP SUPPORTS TO ALLOW FOR CLSM TO PENETRATE BENEATH THE
WITH SEWN SEAM AT TOP (TYP) 4 BASIN DISCHARGE PIPE PIPE. SUPPORTS SHALL BE AT LEAST 0.25L AWAY FROM THE PIPE
SCALE: NTS CONNECTION POINTS, WHERE L IS THE LENGTH OF EACH PIPE
PERFORATED COLLECTION T (MIN) COLLECTION GRAVEL D XREF: GC9914.09X039 SEGMENT.
PIPE 18" 0 HDPE SDR 11 — --=— C 2. FILTER DIAPHRAGM MATERIAL SHALL BE A MIX OF 55% (BY
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/ `1.5' (MIN) \ 1 TRANSITION FINE AGGREGATE (ASTM C33 CONCRETE SAND). THE MIX SHALL
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6" (MIN) 5' (MIN)
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VARIES
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EXTENSION, INLET, AND D '
FINAL COVER SIDE SLOPE DRAINAGE TERRACE CONCRETE APRON SHALL BE a ° D
PLACED ON DOWN DRAINS D
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XREF: GC9914.09X077 i
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EXTENS ION, INLET, AND VEGETATION (TYP)
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ROPEAEg POROUS BAFFLE ' EMERGENCY SPILLWAY INV EL 3166.8 INV EL 3166.8
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2' DEEP TRASH RACIK EL 3160.3 GROUND EL 3160.3
1.1 NOT SHOWN 6' 6'
PLAN VIEW FOR CLARITY ELEVATION VIEW
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NOTES AND PROFILE 11 DETAIL
1. SEED AND PLACE MATTING FOR EROSION CONTROL ON INTERIOR AND EXTERIOR SIDESLOPES, VIEW)
2. INSTALL A MINIMUM OF 3 COIR FIBER BAFFLES IN ACCORDANCE WITH PRACTICE STANDARD 6.65.
3. INSTALL SKIMMER AND COUPLING TO RISER STRUCTURE. 4 OUTLET CONTROL STRUCTURE
4.THE ARM PIPE SHALL HAVE A MINIMUM LENGTH OF 6 FT. BETWEEN THE SKIMMER AND COUPLING. SCALE: 1" = 2'
XREF: GC9914.09X088
MAINTENANCE NOTES:
1. Inspect temporary sediment basins at least weekly and per schedule
specified on Drawings 13 and 14 and repair immediately. Remove sediment
and restore basin to its original dimensions when it accumulates to one-half
the design depth. Place removed sediment in an area with sediment controls.
2. Check the embankment,spillways,and outlet for erosion damage,and inspect the
C embankment for piping and settlement. Make all necessary repairs immediately, C
Remove all trash and other debris from the riser and pool area. TOP WIDTH
NOTE:
Q10 RAINFALL MINIMUM MINIMUM 1. EXISTING SEDIMENT BASINS DESIGNED BY LINING MATERIAL
DISTURBED OTHERS. EXISTING SEDIMENT BASINS SHALL
SEDIMENT BASIN ID AREA (AC) INTENSITY Q10 (CFS) VOLUME SURFACE AREA REMAIN IN COMMISSION UNTIL THE PROPOSED
(IN./HR) PROVIDED (CF) PROVIDED (SF) VARIES VARIES
PONDS AND TEMPORARY SEDIMENT TRAPS CHANNEL
MODIFIED HAW-3 68.2 0.25 299.0 1,503,195 99,518 ARE CONSTRUCTED IN THEIR PLACE,AT WHICH 1 DEPTH 1
TIME THEY WILL BE DECOMMISSIONED.
10 DETAIL
4 SEDIMENT BASIN ---�
SCALE: NTS BOTTOM WIDTH
XREF: GC9914.09X038
GENERAL NOTE:
1. VEGETATED ACB MATTING SHALL BE INSTALLED AND
MAINTAINED AS SPECIFIED BY THE MANUFACTURER AND IN
ACCORDANCE WITH TECHNICAL SPECIFICATION 33 49 00.
SECTION MINIMUM CHANNEL MINIMUM BOTTOM SIDE SLOPE SIDE SLOPE
D VARIES- DRAINAGE CHANNEL ID SHAPE D50 (IN.) DEPTH (FT) WIDTH (FT) MIA M2:1 D
EMBANKMENT CREST SIDE SLOPE DRAINAGE TERRACE VEE 9.0 3.0 0.0 2.0 5.0
ACCESS ROAD DRAINAGE CHANNEL TRAP 18.0 3.0 7.0 2.0 2.0
PERIMETER CHANNEL TRAP VARIES 3.0 VARIES 3.0 3.0
STRUCTURAL FILL RUNON DIVERSION CHANNEL TRAP 18.0 3.0 10.0 3.0 3.0
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10 STRUCTURE INLET
W I SLOPE VARIES
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STORMWATER CULVERT ID MATERIAL TYPE PIPES DIAMETER LENGTH (FT) ELEVATION (FT) ELEVATION (FT) SLOPE (FT/FT) ELEVATION (FT) 1300 SOUTH MINT STREET,SUITE 300
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a NC LICENSE NO.:C-3500
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3210 _ _ 3210
3200 3200
EXISTING GRADE � — '
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3180 ACCESS ROAD
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3130 3130
3120 3120
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DISTANCE (FEET)
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Katherine Fox ?.�° �.
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044690
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Pipe Outlet to Flat Area-
No Well-defined Channel placement for proper soil contact. slope,anchor upslope of the berm
Stapling pattern as Min.2"
overla Anchor in ii min.Trench
3 per manufacturers and staple at 12"intervals.
0 A A recommendations. 8'max.st�in&rd strength fabric Mithwire ferl
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No Well-defined Channel
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turn the end under 4"and staple at 12'
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the rolls to conform to any irregularities. 1 gf Plastic or
intervals.
t')il7 La
wire ties
For less than 3HAV,rolls Lime,fertilize,and seed before installation.Planting
may in strips. of shrubs,trees,etc.should occur after installation.
4
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4em,P-Gr 1 fence F-
Section AA Filter Notes
blanket ground
Natural
6" min 1. La is the length of the riprap
apron.
Pipe Outlet to Well-defined GENERAL NOTE:
2-3 Nr2 Channel 2. d=1.5 times the maximum
stone diameter but not less
coarse aggregate than 6". 1. Staples shall be installed as specified by the Manufacturer. Staple 24" Filter
3, In a well-defined channel ex- material will be in accordance with Technical Specification 31 25 00. fabric
GENERAL NOTE: tend the apron up the channel MAINTENANCE NOTES:
A A banks to an elevation of 6' 1. Inspect Rolled Erosion Control Products at least weekly and er
2 above the maximum tailwater p
1. Construction entrance shall be underlain by 8 oz/sy nonwoven geotextile as specified in Technical Specification 31 25 00. 1 depth or to the top of the bank, schedule specified on Drawings 13 and 14 and repair immediately.
-A k whichever is less. Wire
MAINTENANCE NOTES: 4. A filter blanket or filter fabric 2. Good contact with the ground must be maintained, and.erosion must not fence
should be installed between occur beneath the RECR Cs-Section
View
1. Maintain the gravel pad in a condition to prevent mud or sediment from leaving the construction site. This may require periodic top Plan the riprap and soil foundation. 3. Any areas of the RECP that are damaged or not in close contact with the Filter
dressing with 2-inch stone. ftv ground shall be repaired and stapled. 5tell fabric Bal trench
post thorn Natural
B 2. Inspection schedule is provided on Drawings 13 and 14. 4. If erosion occurs due to poorly controlled drainage,the:problem shall be thoroughly ground B
La fixed and the eroded area protected.
3. Immediately remove all objectionable materials spilled, washed, or tracked onto public roadways. 5. Monitor and repair the RECP as necessary until ground cover is
established.
4 4 min o
all
DETAIL
'16 DETAIL 24"
Section AA N
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Willful a
TEMPORARY GRAVEL CONSTRUCTION ENTRANCE-EXIT
SCALE: NTS Filter ROLLED EROSION CONTROL PRODUCT
Xi GC9914.09X030 MAINTENANCE NOTE: blanket SCALE: NTS
XREF: GC9914.09XO32
1. Inspect riprap outlet structures weekly and per schedule specified on
Drawings 13 and 14 to see if any erosion around or below the riprap has taken
place, or if stones have been dislodged. Immediately male all needed repairs
r-4' (MIN) ISLAND OVER INLET to prevent further damage. GENERAL NOTES:
DIVERSION DIKE -1 1. Double rows of silt fence shall be offset a minimum of 4 feet from the upper row of fence or the distance
3 ---T Ki 5 DETAIL Wend 9 gauge wire to basin side or install T-post to anchor equal to the height of the sediment fence, whichever is greater.
Drape baffle material overwire strand and
HOLD-DOWN STAKES baffle to side of basin and secure to vertical post
` (MIN) secure with plastic ties at posts and on wire every 12'
1 5 2. If silt fence posts are to be spaced over 6 feet, wire backing shall be installed. Wire backing shall be in
OUTLET STABILIZATION STRUCTURE accordance with Technical Specification 31 25 00.
4'Max.--od
SCALE: NTS
Xi GC9914.09XO31 3. Silt fence surrounding stockpile areas shall be offset 5 feet from the toe of the stockpile.
MAINTENANCE NOTES:
...... . .... ..
10' SPACING
9 Gauge Mift High
Tension Wire Strand C 3'MIN.* Variable Depth
SIZING TABLE (NOTE 1) ShallBeSecured 1. Inspect sediment fences at least once a week and per schedule specified on Drawings 13 and 14. Make C
To Pol Support Z any required repairs immediately.
PLASTIC
Maximum Drainage Pipe Diameter Baffle Material ;.Wawa$ Secure bottom of baffle to ground with
CORRUGATED PIPE Area per Pipe (acres) (inches) 12'staples at 12'maximum spacing. 2. Should the fabric of a sediment fence collapse, tear, decompose or become ineffective, replace it
0.50 12 Baffle Material '1/ promptly.
0.75 15 Baffle Material 3. Remove sediment deposits as necessary to provide adequate storage volume for the next rain and to
1.00 18 reduce pressure on the fence. Take care to avoid undermining the fence during cleanout.
NOTE: �All 4. Remove all fencing materials and unstable sediment deposits and bring the area to grade and stabilize it
1. Temporary slope drains to be provided as required at the discretion of *Ifthetemporary sediment basin will be 11 Gauge after the contributing drainage area has been properly stabilized.
the contractor using the sizing table provided during waste filling converted to a permanent stormwater basin Landscaping Staple
operations. Once final cover is installed for phase, permanent down of greater depth,the baffle height should be SLOPE SLOPE LENGTH ii MAXIMUM AREA (SF)
as ai depth d depurng u se
drains as shown on Drawing 8, Surface Water Management Plan, are to based on the pool ;-i <2% 100 10,000
temporary sediment basin,
be installed.
F-1 I 2TO5% 75 7,500
5TO10% 50 5,000
C MAINTENANCE NOTE: Note:Install three(3)coir fiber baffles in basins steel Past:
- 1 1. Inspect the slope drain and supporting diversion per schedule specified on atdrainage outlets witha spacingof 1/4the 2'-("Depth 10 TO 20% 25 2,500
4' MIN Drawings 13 and 14 , and promptly make necessary repairs. When the basin length.
Baffle Material should be secured to the bottom >20% 1 15 1,500
LEVEL SECTION protected area has been permanently stabilized, temporary measures may and sides of basin using 12"landscape staples
STABILIZED OUTLET be removed, materials disposed of properly, and all disturbed areas Ki 7 DETAIL
stabilized appropriately.
4' (MIN) TOP OF HAND-COMACTED SEDIMENT FENCE
D TOP OF DIVERSION FILL (ISLAND) MAINTENANCE NOTE: SCALE: NTS
r- XREF: GC9914.09XO37
1' (MIN) 0.5' (MIN) 1. Inspect Baffles at least weekly and per schedule specified on Drawings D
NATURAL GROUND 1.5' (11(MIN) 9" min 15 min. 13 and 14. Make any required repairs immediately.
2. Be sure to maintain access to the baffles. Should the fabric of a baffle collapse,
DIVERSION CHANNEL --- ---- ---- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A"INWIlir tear,decompose,or become ineffective, replace it promptly.------------ 3. Remove sediment deposits when it reaches half fulli,to provide adequate
storage volume for the next min and to reduce pressure on the baffles.
Take care to avoid damaging the baffles during cleanout,and replace if damaged
18 DETAIL during cleanout operations. Sediment depth should never exceed half the
TEMPORARY SLOPE DRAINS designed storage depth.
SCALE: 1" =2'
Xi GC9914.09XO96 Filter Cloth 4. After the contributing drainage area has been properly stabilized,remove all
7 baffle materials and unstable sediment deposits,bring the area to grade,and
y Plan View stabilize it.
0 12" of Ni ri#5 or #57 9 D E TA I L
V) Natural Ground
washed stone 15
W
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9
Xi GC9914.09X036
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Cross-Section View 1300 SOUTH MINT STREET,SUITE 300
CHARLOTTE,NC 28203 USA
< 1. Inspect rock pipe inlet protection at least weekly and per schedule specified on Drawings 13 and 14 and repair W
X PHONE:[phone]
< immediately. Remove sediment and restore the sediment storage area to its original dimensions when the
NC LICENSE NO.:C-3500
V) sediment has accumulated to one-half the design depth of the trap. Place the sediment that is removed in the MAINTENANCE NOTE:
0 TITLE:
n_ 1. Inspect riprap outlet structures weekly and per schedule specified on Drawings
designated disposal area and replace the contaminated part of the gravel facing.
U) 13 and 14 and repair immediately. Clean out sediment, straw, limbs, or other EROSION AND SEDIMENT CONTROL DETAILS I
0
Z 2. Check the structure for damage. Any riprap displaced from the stone horseshoe must be replaced immediately. debris that could clog the channel when needed.
PROJECT:
2. Anticipate submergence and deposition above the check dam and erosion from HAWKINS EAST DISPOSAL AREA
Z 3. After all the sediment-producing areas have been permanently stabilized, remove the structure and all the
< high flows around the edges of the dam. Correct all damage immediately, If
unstable sediment. Smooth the area to blend with the adjoining areas and provide permanent ground cover
ROCK AND TAILINGS DISPOSAL
0 (Surface Stabilization). significant erosion occurs between dams, additional measures can be taken
X SITE:
W such as, installing a protective ripirap liner in that portion of the channel
Z SPRUCE PINE ROCK
Q-
F (Practice 6.31 Riprap-line and Paved Channels).
MITCHELL COUNTY NORTH CAROLINA
w
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3. Remove sediment accumulated behind the dams as needed to prevent damage
DESIGN BY: VMD/KF DATE: JULY 2024
to channel vegetation,allow the channel to drain through the stone check dam,
ROCK PIPE INLET PROTECTION \A. CAR
0 and prevent large flows from carrying sediment over the dam. Add stones to S S
9 Kath ZX -11
0 SCALE: NTS * 1,- PROJECT NO.:
Xi GC9914.09XO34 0 DRAWN BY: MAF GC9914.09
9 dams as needed to maintain design height and cross section. Digitally signed 7
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by Katherine Fox CHECKED BY: OT/KF FILE: GC9914.09-Cll.DWG
r2 DETAIL e r i n e 13 SEAL
044690 E
Date:2024.08.
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2 3 1 4 5 6 1 7 1 8

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Mulching Materials and Application Rates
Material Rate Per Acre Quality Notes
Orgamic Mulches
Straw 1-2 tons Dry, unchopped, Should come from wheat or cats,
unweathered;avoid spread by hand or machine-, must
weeds. be tacked down.
Wood chips 5-6 tons Air dry Treat with 12 lbs nitrogen/ton. Apply
with mulch blower, chip handler, or
A by hand. Not for use in fine turf, SEEIDING MIXTURE AND RATE SEEDING DATES SOIL AMENDMENTS MULCH MAINTENANCE A
Wood fiber 0.5-1 tons Also referred to as wood cellulose.
May be hydroseeded. Do not use in BY SOIL TEST OR: REFERTILIZE IF GROWTH
hot, dry weather. a APPLY 4000 LB/ACRE STRAW. INADEQUATE. RESEED, REFERTILIZE,
Bark 35 cubic yards Air dry, shredded or Apply with mulch blower, chip RYE (GRAIN) 120 LB/ACRE DECEMBER 1 -APRIL 15 2000 LB/ACRE AGRICULTURAL LIMESTONE ANCHOR STRAW WITH TACKIFIER AND MULCH IMMEDIATELY
hammer-milled, or chips. handler, or by hand. Do not use OR NETTING. FOLLOWING EROSION OR OTHER
asphalt tack. 750 LB/ACRE 10-10-10 FERTILIZER DAMAGE
Corn stalks 4-6 tons Cut or shredded in 4-6 Apply with mulch blower or by hand.
in. lengths. Not for use in fine turf. BY SOIL TEST OR: REFERTILIZE IF GROWTH
Sericea 1-3 tons Green or dry"should APPLY 4000 LB/ACRE STRAW. INADEQUATE. RESEED, REFERTILIZE,
lespecleza contain mature seed. GERMAN MILLET 40 LB/ACRE APRIL 15 -AUGUST 15 2000 LB/ACRE AGRICULTURAL LIMESTONE ANCHOR STRAW WITH TACKIFIER AND MULCH IMMEDIATELY
seed-bearing OR NETTING. FOLLOWING EROSION OR OTHER
stems 750 LB ACRE 10-10-10 FERTILIZER DAMAGE
Nets and Mats'
Jute net Cover area Heavy, uniform-,woven Withstands waterflow, Best when BY SOIL TEST OR: REFERTILIZE IF GROWTH
of single jute yarn, used with organic mulch. APPLY 40010 LB/ACRE STRAW. INADEQUATE. RESEED, REFERTILIZE,
Fiberglass net Cover area Withstands waterflow. Best when RYE (GRAIN) 120 LB/ACRE AUGUSTS 15 - DECEMBER 30 2000 LB/ACRE AGRICULTURAL LIMESTONE ANCHOR STRAW WITH TACKIFIER AND MULCH IMMEDIATELY
used with organic mulch. 750 LB/ACRE 10-10-10 FERTILIZER OR NETTING. FOLLOWING EROSION OR OTHER
Excelsior Cover area Withstands waterflow. DAMAGE
(wood fiber)
mat
Fiberglass roving 0 5-1 tons Continuous fibers of Apply with a compressed air ejector.
drawn glass bound Tack with emulsified asphalt at a
rate of 25-35 gal/1,000 sq ft,together with a non toxic r2 3 DETAIL
B agent.
Chemical Stabilizer$2 TEMPORARY SEEDING B
Aquatain follow Not beneficial to plant growth,
manufacturer's Aerospray SCALE: NTS XREF: GC9914.09X040
Curasol AK specifications
Petroset SB
Terra Tack
Crust 500
Genequa 743
M-1 45
!Refer to Practice No. 6.30, Grass Lined Channels.
'Use of trade names does not imply endorsement of product.
COMMON NAME BOTANICAL NAME RATE (LB/AQ PURPOSE T—OPTIMAL PLANTING DATES
WARM SEASON
r22' DETAIL GERMAN MILLET SETARIA ITALICA 1 10 T—NURSE CROP 4/15- 8/15
MULCHING COOL SEASON
SCALE: NTS RYE GRAIN SECALE CEREALS 10 NURSE CROP 8/15 -4/15
XREF: GC9914.09X043
BIG BLUESTEM ANDROPGON GERADII / EARL 7 PRIMARY STABILIZATION 12/1-5/1
SWITCHGRASS PANICUM VIRGATUM/ BLACKWELL, SHELTER, OR CARTHAGE 3.5 PRIMARY STABILIZATION 12/1-4/1
C VIRGINIA WILD RYE ELYMUS VIRGINICUS 6 PRIMARY STABILIZATION 2/15 -3/20 AND 9/1- 11/1
I INDIAN WOODOATS CHASMANTHIUM LATIFOLIUM 2.5 PRIMARY STABILIZATION 2/15 -3/20 AND 9/1- 11/1
K2 4 DETAIL
PERMANENT SEEDING
SCALE: NTS
XREF: GC9914.09X041
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EROSION AND SEDIMENT CONTROL DETAILS 11
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GROUND STABILIZATION AND MATERIALS HANDLING PRACTICES FOR COMPLIANCE WITH LITTER, BUILDING MATERIAL AND LAND CLEARING WASTE CONCRETE WASHOUTS
THE NCG01 CONSTRUCTION GENERAL PERMIT 1. Never bury or burn waste. Place litter and debris in approved waste containers. 1. Do not discharge concrete or cement slurry from the site.
Implementing the details and specifications on this plan sheet will result in the construction 2. Provide a sufficient number and size of waste containers (e.g dumpster, trash 2. Dispose of, or recycle settled, hardened concrete residue in accordance with local
A activity being considered compliant with the Ground Stabilization and Materials Handling receptacle) on site to contain construction and domestic wastes. and state solid waste regulations and at an approved facility. A
sections of the NCG01 Construction General Permit (Sections E and F, respectively). The 3. Locate waste containers at least 50 feet away from storm drain inlets and surface 3. Manage washout from mortar mixers in accordance with the above item and in
permittee shall comply with the Erosion and Sediment Control plan approved by the waters unless no other alternatives are reasonably available. addition lace the mixer and associated materials on im ervious barrier and within
delegated authority having jurisdiction. All details and specifications shown on this sheet on p p
may not apply depending on site conditions and the delegated authority having urisdiction. 4. Locate waste containers on areas that do not receive substantial amounts of runoff lot perimeter silt fence.
y pp y p g g y g from upland areas and does not drain directly to a storm drain, stream or wetland. 4. Install temporary concrete washouts per local requirements, where applicable. If an
SECTION E: GROUND STABILIZATION 5. Cover waste containers at the end of each workday and before storm events or alternate method or product is to be used, contact your approval authority for
provide secondary containment. Repair or replace damaged waste containers. review and approval. If local standard details are not available, use one of the two
Required Ground Stabilization Timeframes 6. Anchor all lightweight items in waste containers during times of high winds. types of temporary concrete washouts provided on this detail.
manStabilize within this 7. Empty waste containers as needed to prevent overflow. Clean up immediately if 5. Do not use concrete washouts for dewatering or storing defective curb or sidewalk
d
Site Area Description days calendar after ceasing Timeframe variations containers overflow. sections. Stormwater accumulated within the washout may not be pumped into or
days
land disturbance 8. Dispose waste off-site at an approved disposal facility. discharged to the storm drain system or receiving surface waters. Liquid waste must
9. On business days, clean up and dispose of waste in designated waste containers. be pumped out and removed from project.
(a) Perimeter dikes, 6. Locate washouts at least 50 feet from storm drain inlets and surface waters unless it
swales, ditches, and 7 None can be shown that no other alternatives are reasonably available. At a minimum,
perimeter slopes PAINT AND OTHER LIIQUID WASTE of storm drain inlet
install protection B 1. Do not dump paint and other liquid waste into storm drains, streams or wetlands. p (s) closest to the washout which could receive B
(b) High Quality Water spills or overflow.
(HQW) Zones 7 None 2. Locate paint washouts at feast 50 feet away from storm drain inlets and surface 7. Locate washouts in an easily accessible area, on level ground and install a stone
waters unless no other alternatives are reasonably available.
If slopes are 10' or less in length and are entrance pad in front of the washout. Additional controls may be required by the
(c) Slopes steeper than 7 p g 3. Contain liquid wastes in a controlled area. approving authority.
3:1 not steeper than 2:1, 14 days are 4. Containment must be labeled, sized and placed appropriately for the needs of site. 8. Install at least one sign directing concrete trucks to the washout within the project
allowed
-7 days for slopes greater than 50' in 5. Prevent the discharge of soaps, solvents, detergents and other liquid wastes from limits. Post signage on the washout itself to identify this location.length and with slopes steeper than 4:1 construction sites. 9. Remove leavings from the washout when at approximately 75% capacity to limit
-7 days for perimeter dikes, swales, overflow events. Replace the tarp, sand bags or other temporary structural
d Slopes 3:1 to 4:1 14 PORTABLE TOILETS components when no longer functional. When utilizing alternative or proprietary
( ) p ditches, perimeter slopes and HQW 1. Install portable toilets on level ground, at least 50 feet away from storm drains, products, follow manufacturer's instructions.
Zones streams or wetllands unless there is no alternative reasonablyavailable. If 50 foot
-10 days for Falls Lake Watershed 10. At they completion of the concrete work, remove remaining leavings and dispose of
offset is not attainable, provide relocation of portable toilet behind silt fence or place in an approved disposal facility. Fill pit, if applicable, and stabilize any disturbance
-7 days for perimeter dikes, swales, on a gravel pad and surround with sand bags. caused by removal of washout.
(e) Areas with slopes ditches, perimeter slopes and HQW Zones 2. Provide staking or anchoring of portable toilets during periods of high winds or in high
C flatter than 4:1 14 -10 days for Falls Lake Watershed unless foot traffic areas. C
there is zero slope 3. Monitor portable toilets for leaking and properly dispose of any leaked material.
Note: After the permanent cessation of construction activities, any areas with temporary Utilize a licensed sanitary waste hauler to remove leaking portable toilets and replace HERBICIDES,, PESTICIDES AND RODENTICIDES
ground stabilization shall be converted to permanent ground stabilization as soon as with properly operating unit. 1. Store and apply herbicides, pesticides and rodenticides in accordance with label
practicable but in no case longer than 90 calendar days after the last land disturbing restrictions.
activity. Temporary ground stabilization shall be maintained in a manner to render the EARTHEN STOCKPILE MANAGEMENT 2. Store herbicides, pesticides and rodenticides in their original containers with the
label, which lists directions for use, ingredients and first aid steps in case of
surface stable against accelerated erosion until permanent ground stabilization is achieved. 1. Show stockpile locations on plans. Locate earthen-material stockpile areas at least
p p p accidental poisoning.
GROUND STABILIZATION SPECIFICATION 50 feet away from storm drain inlets, sediment basins, perimeter sediment controls 3. accidental
not store herbicides, pesticides and rodenticides in areas where flooding is
Stabilize the ground sufficiently so that rain will not dislodge the soil. Use one of the and surface waters unless it can be shown no other alternatives are reasonably possible or where they may spill or leak into wells, stormwater drains, ground water
techniques in the table below: 2.
or surface water. If a spill occurs, clean area immediately.
2. Protect stockpille with silt fence installed along toe of slope with a minimum offset of 4. Do not stockpile Temporary Stabilization Permanent Stabilization five feet from the toe of stockpile. pile these materials onsite.
• Temporary grass seed covered with straw or • Permanent grass seed covered with straw or 3. Provide stable stone access point when feasible.
other mulches and tackifiers other mulches and tackifiers
• Hydroseeding • Geotextile fabrics such as permanent soil 4. Stabilize stockpile within the timeframes provided on this sheet and in accordance HAZARDOUS AND TOXIC WASTE
D • Rolled erosion control roduccts with or reinforcement matting with the approved plan and any additional requirements. Soil stabilization is defined
P g i 1. Create designated hazardous waste collection areas on-site. p
as vegetative, physical or chemical coverage techniques that will restrain accelerated
without temporary grass seed) • Hydroseeding g p y g q 2. Place hazardous waste containers under cover or in secondary containment.
• Appropriately applied straw or other mulch • Shrubs or other permanent plantings covered erosion on disturbed soils for temporary or permanent control needs.
• 3. Do not store hazardous chemicals, drums or bagged materials directly on the ground.
Plastic sheeting with mulch
• Uniform and evenly distributed ground cover
sufficient to restrain erosion ONSITE CONCRETE WASHOUT
• Structural methods such as concrete, asphalt or STRUCTURE WITH LINER
o'
retaining walls MIN SANDBAGS(TYP.)
COHESIVE A OR STAPLES
HIGH
• Rolled erosion control products with grass seedBERM 0 O O SANDBAGS(TYP.)I SOIL FILTRATION B HIGH
° 0 OR STAPLES --77-- 10 MIL COHESIVE&
° O ° } PLASTIC LINING LOW FILTRATION
10 MIL ° ° I (TYPI'E SLOPE SOIL BERM
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POLYACRYLAMIDES PAMS AND FLOCCULANTS ° ° SILTFENQ:E o o
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1. Select flocculants that are appropriate for the soils being exposed during A r ° SECTION B-B
W construction, selecting from the NC DWR List of Approved PAMS/Flocculants. B SANDBAGS(TYP) NOTES
W C CLEARLY MARKED SIG NAGIE SECTION A-A OR STAPLES 1.ACTUAL LOCATION DETERMINED IN FIELD
2. Apply flocculants at or (before the inlets to Erosion and Sediment Control Measures. WASHOUTE NOTING DEVICE(18"X24°MIIN) NOTES CLEARLY MARKED SIGNAGE 2.THE CONCRETE WASHOUT STRUCTURES
(n 1.ACTUAL LOCATION DETERMINED IN FIELD CONCRETE NOTING DEVICE(16"X24"MIN.) SHALL BE MAINTAINED WHEN THE LIQUID
0 WASHOUT AND/OR SOLID REACHES 75%OF THE
� 3. Apply flocculants at the concentrations specified in the NC DWR List of Approved 2 THE CONCRETE THELIQTDAND/OURESSHREACHALL BE ADEQUATE
HOLDING
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MAINTAINED WHEN THE LIQUID AND/OR SOLID REACHES ADEQUATE HOLDING CAPACITY WITH A
Q E 75%OF THE STRUCTURES CAPACITY.
� ( MINIMUM 12 INCHES OF FREEBOARD.
PAMS/Flocculants and iin accordance with the manufacturers instructions. PLAN CLEARY MARKED
ITHSIGRUCTURTINGDSTOBE PLAN 3.CONCRETE WASHOUT STRUCTURE NEEDS B 07/03/2024 REVISED FOR PERMITTING MAF KF
CLEARY MARKED WITH SIGNAGE NOTING DEVICE. TO BE CLEARY MARKED WITH SIGNAGE
LU 4. Provide ponding area for containment of treated Stormwater before discharging NOTING DEVICE A 05/08/2024 ISSUED FOR PERMITTING MAF KF
offsite. BELOW GRADE WASHOUT STRUCTURE ABOVE GRADE WASHOUT STRUCTURE REV DATE DESCRIPTION DRN APP
NOT TO SCALE
NOT TO SCALE
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GeosyntecOor surrounded by secondary containment structures. S I B E L C 0
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consultants OF NC, PC
1300 SOUTH MINT STREET,SUITE 300
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EQUIPMENT AND VEHICLE MAINTENANCE CHARLOTTE,NC 28203 USA
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a NC LICENSE NO.:C-3500
1. Maintain vehicles and equipment to prevent discharge of fluids. TITLE:
0 2. Provide drip pans under any stored equipment.
EROSION AND SEDIMENT CONTROL NOTES I
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project. PROJECT: HAWKINS EAST DISPOSAL AREA
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has been corrected. DESIGN BY: VMD/KF DATE: JULY 2024
6. Bring used fuels, lubricants, coolants, hydraulic fluids and other petroleum products Kathe Digitally signed
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1 1 2 3 4 5 6 7 8

1 2 3 4 5 6 7 8
PART III PART III
PART III
SELF-INSPECTION, RECORDKEEPING AND REPORTING SELF-INSPECTION, RECORDKEEPING AND REPORTING SELF-INSPECTION, RECORDKEEPING AND REPORTING
A SECTION A: SELF-INSPECTION SECTION B: RECORDKEEPING SECTION C: REPORTING A
Self-inspections are required during normal business hours in accordance with the table 1. E&SC Plan Documentation 1. Occurrences that IiIi be Reported
below. When adverse weather or site conditions would cause the safety of the inspection The approved E&SC plan as well as any approved deviation shall be kept on the site. The Permittees shall report the following occurrences:
personnel to be in jeopardy, the inspection may be delayed until the next business day on approved E&SC plan must be kept up-to-date throughout the coverage under this permit. (a) Visible sediment deposition in a stream or wetland.
which it is safe to perform the inspection. In addition, when a storm event of equal to or The following items pertaining to the E&SC plan shall be kept on site and available for
greater than 1.0 inch occurs outside of normal business hours, the self-inspection shall be inspection at all times during normal business hours.
performed upon the commencement of the next business day. Any time when inspections (b) Oil spills if:
were delayed shall be noted in the Inspection Record. Item to Document Documentation Requirements . They are 25 gallons or more,
Frequency (a) Each E&SC measure has been installed Initial and date each E&SC measure on a copy • They are less than 25 gallons but cannot be cleaned up within 24 hours,
Inspect (during normal Inspection records must include: and does not significantly deviate from the of the approved E&SC plan or complete, date
business hours) locations, dimensions and relative elevations and sign an inspection report that lists each • They cause sheen on surface waters (regardless of volume), or
(1) Rain gauge Daily Daily rainfall amounts. shown on the approved E&SIC plan. E&SC measure shown on the approved E&SC • They are within 100 feet of surface waters (regardless of volume).
maintained in If no daily rain gauge observations are made during weekend or plan. This documentation is required upon the
good working holiday periods, and no individual-day rainfall information is
order available, record the cumulative rain measurement for those un- initial installation of the E&SC measures or if
attended days (and this will determine if a site inspection is the E&SC measures are modified after initial (C) Releases of hazardous substances in excess of reportable quantities under Section 311
needed). Days on which no rainfall occurred shall be recorded as installation. of the Clean Waiter Act (Ref: 40 CFR 110.3 and 40 CFR 117.3) or Section 102 of CERCLA
B "zero." The permittee may use another rain-monitoring device (Ref: 40 CFR 302.4) or G.S. 143-215.85. B
approved by the Division. (b) A phase of grading has been completed. Initial and date a copy of the approved E&SC
(2) E&SC At least once per 1. Identification of the measures inspected, plan or complete, date and sign an inspection
Measures 7 calendar days 2. Date and time of the inspection, report to indicate completion of the (d) Anticipated bypasses and unanticipated bypasses.
and within 24 3. Name of the person performing the inspection, construction phase.
hours of a rain 4. Indication of whether the measures were operating
event > 1.0 inch in properly, (c) Ground cover is located and installed Initial and date a copy of the approved E&SC
24 hours 5. Description of maintenance needs for the measure, in accordance with the approved E&SC plan or complete, date and sign an inspection (e) Noncompliance with the conditions of this permit that may endanger health or the
6. Description, evidence, and date of corrective actions taken. plan. report to indicate compliance with approved environment.
(3) Stormwater At least once per 1. Identification of the discharge outfalls inspected, ground cover specifications.
discharge 7 calendar days 2. Date and time of the inspection,
outfalls (SDOs) and within 24 3. Name of the person performing the inspection, (d) The maintenance and repair Complete, date and sign an inspection report. 2. Reporting Timeframes and Other Requirements
hours of a rain 4. Evidence of indicators of Stormwater pollution such as oil requirements for all E&SC measures
event > 1.0 inch in sheen, floating or suspended solids or discoloration, have been performed. After a permittee becomes aware of an occurrence that must be reported, he shall contact
24 hours 5. Indication of visible sediment leaving the site, the appropriate Division regional office within the timeframes and in accordance with the
6. Description, evidence, and date of corrective actions taken. (e) Corrective actions have been taken Initial and date a copy of the approved E&SC other requirements listed below. Occurrences outside normal business hours may also be
(4) Perimeter of At least once per If visible sedimentation is found outside site limits then a record to E&SC measures. plan or complete, date and sign an inspection
site 7 calendar days of the following shall be made: report to indicate the completion of the reported to the Department's Environmental Emergency Center personnel at (800)
and within 24 1. Actions taken to clean up or stabilize the sediment that has left corrective action. 858-0368.
C hours of a rain the site limits,
event > 1.0 inch in 2. Description, evidence, and date of corrective actions taken, and 2. Additional Documentation to be Kept on Site Occurrence Reporting Timeframes (After Discovery) and Other Requirements C
24 hours 3. An explanation as to the actions taken to control future In addition to the E&SC plan documents above, the following items shall be kept on the (a) Visible sediment • Within 24 hours, an oral or electronic notification.
releases. site and available for inspectors at all times during normal business hours unless the deposition in a
p g P Within 7 calendar days, a report that contains a description of the
(5) Streams or At least once pier If the stream or wetland has increased visible sedimentation or a stream or wetland
wetlands onsite 7 calendar days stream has visible increased turbidity from the construction Division provides asite-specific exemption based on unique site conditions that make sediment and actions taken to address the cause of the deposition.
or offsite and within 24 activity,then a record of the following shall be made: this requirement not practical: Division staff may waive the requirement for a written report on a
(where hours of a rain 1. Description, evidence and date of corrective actions taken, and case-by-case basis.
accessible) event> 1.0 inch in 2. Records of the required reports to the appropriate Division aired for sediment-
24 If the stream is named on the NC 303(d) list as impaired(a) This General Permit as well as the Certificate of Coverage, after it is received. p
24 hours Regional Office per Part III, Section C, Item (2)(a) of this permit. related causes, the permittee may be required to perform additional
(6) Ground After each phase 1. The phase of grading (installation of perimeter E&SC monitoring, inspections or apply more stringent practices if staff
stabilization of grading measures, clearing and grubbing, installation of storm (b) Records of inspections made during the previous twelve months. The permittee shall
measures drainage facilities, completion of all land-disturbing record the required observations on the Inspection Record Form provided by the determine that additional requirements are needed to assure compliance
with the federal or state impaired-waters conditions.
activity, construction or redevelopment, permanent Division or a similar inspection form that includes all the required elements. Use of
ground cover). (b) Oil spills and • Within 24 hours, an oral or electronic notification. The notification
electronically-available records in lieu of the required paper copies will be allowed if
2. Documentation that the required ground stabilization release of shall include information about the date, time, nature, volume and
measures have been provided within the required shown to provide equal access and utility as the hard-copy records. hazardous location of the spill or release.
timeframe or an assurance that they will be provided as substances per Item
soon as possible. 3. Documentation to be Retained for Three Years 1(b}-(c) above
All data used to complete the e-NOI and all inspection records shall be maintained for a period
D NOTE: The rain inspection resets the required 7 calendar day inspection requirement. of three ears after project completion and made available upon request. 40 CFR 122.41 (c) Anticipated • A report at least ten days before the date of the bypass, if possible.
p q y p q y p p p q bypasses [40 CFR The report shall include an evaluation of the anticipated quality and D
122.41(m)(3)] effect of the bypass.
PART II, SECTION G, ITEM (4) (d) Unanticipated • Within 24 hours, an oral or electronic notification.
bypasses [40 CFR • Within 7 calendar days, a report that includes an evaluation of the
DRAW DOWN OF SEDIMENT BASINS FOR MAINTENANCE OR CLOSE OUT 122.41(m)(3)] quality and effect of the bypass.
(e) Noncompliance • Within 24 hours, an oral or electronic notification.
Sediment basins and traps that receive runoff from drainage areas of one acre or more shall use outlet structures that withdraw water from the surface when these devices need to be drawn down with the conditions . Within 7 calendar days, a report that contains a description of the
for maintenance or close out runless this is infeasible. The circumstances in which it is not feasible to withdraw water from the surface shall be rare (for example, times with extended cold weather). of this permit that noncompliance, and its causes; the period of noncompliance,
Non-surface withdrawals from sediment basins shall be allowed only when all of the following criteria have been met: may endanger including exact dates and times, and if the noncompliance has not
health or the been corrected, the anticipated time noncompliance is expected to
(a) The E&SC plan authority has been provided with documentation of the non-surface withdrawal and the specific time periods or conditions in which it will occur. The non-surface withdrawal environment[4o continue; and steps taken or planned to reduce, eliminate, and
CFR 122.41(I)(7)] prevent reoccurrence of the noncompliance. [40 CFR 122.41(I)(6).
shall not commence until the E&SC plan authority has approved these items, Division staff may waive the requirement for a written report on a
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(b) The non-surface withdrawal has been reported as an anticipated bypass in accordance with Part III, Section C, Item (2)1 and (d) of this permit, case-by-case basis.
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(c) Dewatering discharges are treated with controls to minimize discharges of pollutants from stormwater that is removed from the sediment basin. Examples of appropriate controls include
Z properly sited, designed and maintained dewatering tanks, weir tanks, and filtration systems,
E (d) Vegetated, upland areas of the sites or a properly designed stone pad is used to the extent feasible at the outlet of the dlewatering treatment devices described in Item (c) above, E
B 07/03/2024 REVISED FOR PERMITTING MAF KF
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(f) Sediment removed from the dewatering treatment devices described in Item (c) above is disposed of in a manner that does not cause deposition of sediment into waters of the United States. REV DATE DESCRIPTION DRN APP
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