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1 MINING TO COMMENCE ON AN AS NEEDED BASIS O � � Z
2. RECLAMATION IS REQUIRED PRIOR TO MINE CLOSE OUT. N O
3. NO PERMANENT STRUCTURES OR PERMANENT EMPLOYEES ARE C,
P.
PROPOSED ON SITE. N
4. THE HOURS OF OPERATION WILL BE MONDAY THRU FRIDAY FROM 7:30
j j j j i % i � %' `\ \ I /' O ',I AM TO 5:00 PM.
/ \ 1 / 5. BUFFERS SHALL BE NATURAL VEGETATION SUPPLEMENTED WITH
PLANTINGS AS NECESSARY TO MEET UDO REQUIREMENTS.
hy, ` \•\ / j 6. ALL REQUIREMENTS OF SECTION 5.3.7.G.VF THE LIDO SHALL BE MET.
(� 7. A 60FT ACCESS EASEMENT SHALL BE PROVIDED FOR ALL MINES TO
/Pb \ /;/ _ ALLOW ACCESS TO GREEN HILL RD ALONG THE EXISTING HAUL ROAD.
— -� — — — _ —\— — — — --J------------------ 8. MINE OPERATOR SHALL USE A WATER TRUCK TO CONTROL DUST ALONG
UL
AS
Y.
1 z I 9H NOA PORTION DOF THE CMINE RORERATION IS LOCATED WITHIN A 100 YEAR
p FLOOD PLAIN.
1 10. NO MINING OPERATIONS SHALL BE CONDUCTED WITHIN 50 FEET OF
% \ >�
ANY KNOWN WETLAND. _
Licence #C 3641
Q I I 11. SEE SAW-2023-00941 FOR WETLANDS STUDY AREA. ANY ADDITIONAL
WETLANDS DEPICTED SHOULD BE CONSIDERED PRELIMINARY & SUBJECT TO
° ° 19016
� � I 1 ACOE VERIFICATION. 50' VEGETATED BUFFERS HAVE BEEN PROVIDED
�L' I I I ADJACENT TO THESE AREAS AS AI PRECAUTIONARY MEASURE.
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NOTES:
1, MINING TO COMMENCE ON AN AS NEEDED BASIS.
2. RECLAMATION IS REQUIRED PRIOR TO MINE CLOSE OUT.
3. NO PERMANENT STRUCTURES OR PERMANENT EMPLOYEES ARE
PROPOSED ON SITE.
4. THE HOURS OF OPERATION WILL BE MONDAY THRU FRIDAY FROM 7:30 Licence #C-3641
AM TO 5:00 PM.
MINE 1 AREA TABLE 5. BUFFERS SHALL BE NATURAL VEGETATION SUPPLEMENTED WITH 19016
ACREAGE PLANTINGS AS NECESSARY TO MEET LIDO REQUIREMENTS.
6. ALL REQUIREMENTS OF SECTION 5.3.7.G.VF THE UDO SHALL BE MET.
PARCEL PORTION OF 0690000301 7. A 60FT ACCESS EASEMENT SHALL BE PROVIDED FOR ALL MINES TO DES. JKB
ALLOW ACCESS TO GREEN HILL RD ALONG THE EXISTING HAUL ROAD.
TOTAL SITE AREA 149.18 8. MINE OPERATOR SHALL USE A WATER TRUCK TO CONTROL DUST ALONG CKD. JPN
EXISTING WETLANDS 0 THE HAUL ROAD AS NECESSARY. DRYM ZAC
9. NO PORTION OF THE MINE OPERATION IS LOCATED WITHIN A 100 YEAR
DISTURBED WETLANDS 0 FLOOD PLAIN.
UNDISTURBED WETLANDS 0 10. NO MINING OPERATIONS SHALL BE CONDUCTED WITHIN 50 FEET OF DATE 11/02/23
LEGEND ANY KNOWN WETLAND.
11. SEE SAW-2023-00941 FOR WETLANDS STUDY AREA, ANY ADDITIONAL
WETLANDS DEPICTED SHOULD BE CONSIDERED PRELIMINARY & SUBJECT TO �N\
CATEGORY ACREAGE ACOE VERIFICATION. 50' VEGETATED BUFFERS HAVE BEEN PROVIDED ���` N A ��
PROPERTY LINE / MIME PERMIT BOUNDARY ADJACENT TO THESE AREAS AS A PRECAUTIONARY MEASURE. alb �I-� S •�/�100
MINE EXCAVATION 14.18 o •. 10
— — RIGHT OF WAY PROCESSING AREA/HAUL ROADS 0.43 ?2 9':7
�oE �oE LIMITS OF EXCAVATION TAILINGS/SEDIMENT PONDS/DEWATERING BASIN 0.20 _ SEAL
rs _
STOCKPILES 0 = jj t A' 0
WASTE PILES 0NGINE�•' •`
BUFFER AREA 5.10 11 �OsFPN K.
WETLANDS TOTAL AREA TO BE PERMITTED 19.91 SCALE : 1 = 100'
00111����
20' HAUL ROAD 0 100 200 300
UNDISTURBED BUFFER

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i N w ACREAGE Z W
j PARCEL PORTION OF 0690000301
z m 120P \\ y y y y TOTAL SITE AREA 149.18
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EXISTING WETLANDS 0 .
1 6 x6 OUTLET STRUCTURE c'o� i y y y W
\ < ' \ w/ 36" SD OUTLET II y DISTURBED WETLANDS 0
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scoff, �y y y W y y y y UNDISTURBED WETLANDS 0
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i 45 / / S• CATEGORY ACREAGE r h V 7
i MINE EXCAVATION 14.96 V J `'
PROCESSING AREA/HAUL ROADS 0.55 ~ Q Z M
TAILINGS/SEDIMENT PONDS/DEWATERING BASIN 0.20 Z
i STOCKPILES 0 z
R33 WASTE PILES 0 O Z W
MINI �`:: HAUL RD � `5 �/ / P4 - Z
IN 60`"' ACCESS i � � BUFFER AREA 4.10
o
EAR _MENT
TOTAL AREA TO BE PERMITTED 19.81 N
NOTES:
sls
1. MINING TO COMMENCE ON AN AS NEEDED BASIS.
i I 2. RECLAMATION IS REQUIRED PRIOR TO MINE CLOSE OUT.
3. NO PERMANENT STRUCTURES OR PERMANENT EMPLOYEES ARE
PROPOSED ON SITE.
4. THE HOURS OF OPERATION WILL BE MONDAY THRU FRIDAY FROM 7:30
i �� / AM TO 5:00 PM. Licence#C-3641
5. BUFFERS SHALL BE NATURAL VEGETATION SUPPLEMENTED WITH
�z� ' 000 PLANTINGS AS NECESSARY TO MEET UDO REQUIREMENTS. 1 Oi
6. ALL REQUIREMENTS OF SECTION 5.3.7.G.VF THE UDO SHALL BE MET. 19 1
7. A 60FT ACCESS EASEMENT SHALL BE PROVIDED FOR ALL MINES TO
i ALLOW ACCESS TO GREEN HILL RD ALONG THE EXISTING HAUL ROAD. DES. JKB
8. MINE OPERATOR SHALL USE A WATER TRUCK TO CONTROL DUST ALONG
THE HAUL ROAD AS NECESSARY. CKD. JPN
2 _ �0,` 9. NO PORTION OF THE MINE OPERATION IS LOCATED WITHIN A 100 YEAR DRWN. ZAC
Asx- FLOOD PLAIN.
10. NO MINING OPERATIONS SHALL BE CONDUCTED WITHIN 50 FEET OF
/ ANY KNOWN WETLAND. DATE 11/O2/23
ON- y 11. SEE SAW-2023-00941 FOR WETLANDS STUDY AREA. ANY ADDITIONAL
WETLANDS DEPICTED SHOULD BE CONSIDERED PRELIMINARY & SUBJECT TO i
MINE #2 F%UL RD ACOE VERIFICATION. 50' VEGETATED BUFFERS HAVE BEEN PROVIDED
TO TIE IN�9.6` MINE ADJACENT TO THESE AREAS AS A PRECAUTIONARY MEASURE. IN . •' •••
/ #1 HAUR " RD. ��/ ✓J �S. :�_ si y���':
a SEAL
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HAUL ROAD
0 100 200 300
■

TEMPORARY/PERMANENT SKIMMER BASIN CONSTRUCTION SPECIFICATION SITE WORK NOTES: }
6' W E.S. FABRIC GRASS SPECIFICATION 1. THE CONTRACTOR SHALL VISIT THE SITE TO BECOME FAMILIAR WITH FIELD
8' W/ WIRE MESH CONSTRUCTION CONDITIONS.
1. CLEAR, GRUB, AND STRIP THE AREA UNDER THE EMBANKMENT OF ALL VEGETATION 2. CONTRACTOR SHALL COORDINATE WORK WITHIN NCDOT AND LOCAL RIGHT
STEEL POST 1. CHISEL COMPACTED AREAS AND SPREAD TOPSOIL 3 INCHES DEEP OVER AND ROOT MAT. REMOVE ALL SURFACE SOIL CONTAINING HIGH AMOUNTS OF ORGANIC OF WAYS WITH PROPER AUTHORITIES AND SHALL MEET ANY REQUIREMENTS
WIRE MESH FOR STANDARD FABRIC ADVERSE SOIL CONDITIONS. SKIMMER NOTE: MATTER AND STOCKPILE OR DISPOSE OF IT PROPERLY. HAUL ALL OBJECTIONABLE AS TO TRAFFIC CONTROL AND CONNECTION TO EXISTING STREETS.
2. RIP THE ENTIRE AREA TO A 6 INCH DEPTH. SKIMMER MUST FLOAT ON TOP OF MATERIAL TO THE DESIGNATED DISPOSAL AREA. PLACE TEMPORARY SEDIMENT 3. CLEARING AND GRUBBING: REMOVE ALL TREES AS REQUIRED UNLESS
x z STANDARD OR EXTRA STRENGTH 3. REMOVE ALL ROCKS, ROOTS AND OTHER OBSTRUCTIONS LEAVING SURFACES WATER TO WORK PROPERLY. CONTROL MEASURES BELOW BASIN BS NEEDED.
il�MIN. 14 GA. Q FILTER FABRIC SMOOTH AND UNIFORM. CONTRACTOR SHALL VERIFY THAT VENT OPENING FOR 2. ENSURE THAT FILL MATERIAL FOR THE EMBANKMENT IS FREE OF ROOTS, WOODY OTHERWISE NOTED TO REMAIN, STUMPS, ROOTS, SHRUBBERY, ASPHALT,
6x6 MESH FOR 4. APPLY AGRICULTURAL LIME AND FERTILIZER UNIFORMLY AND MIX WITH SOIL. THE BARREL LENGTH WILL ALLOW VEGETATION, ORGANIC MATTER, AND OTHER OBJECTIONABLE MATERIAL. PLACE THE FILL CONCRETE, STRUCTURES, BURIED UTILITIES, STORAGE TANKS, ETC. WITHIN z N J m WATER ENTRY
STANDARD FABRIC 00 N�� LIMITS OF CONSTRUCTION. 0 __j
EEC - LIME: 45 LBS. PER 1000 S.F. SKIMMER TO FLOAT AT EMERGENCY IN LIFTS; NOT TO EXCEED 9 INCHES, AND MACHINE COMPACT IT. OVER FILL THE
DIRECTION OF WATER FLOW PHOSPHOROUS: 20 LBS PER 1000 S.F. SPILLWAY ELEVATION. EMBANKMENT 6 INCHES TO ALLOW FOR SETTLEMENT. 4. STRIPPING: BEFORE EXCAVATING OR FILLING, REMOVE ALL TOPSOIL, Q
WOOD, LEAVES, AND ANY OTHER UNSUITABLE MATERIAL.
FERTILIZER: 17 LBS. PER 100E S.F. F--
3. SHAPE THE BASIN TO THE SPECIFIED DIMENSIONS. PREVENT THE SKIMMING DEVICE 5. MUCKING: REMOVE ANY SOFT, ORGANIC SILT MATERIALS AND EXISTING
5. CONTINUE TILLAGE UNTIL A WELL PULVERIZED, FIRM, UNIFORM SEED BED IS FROM SIETTLING INTO THE MUD BY EXCAVATING A SHALLOW PIT UNDER THE SKIMMER U Cn z ANCHOR FABRIC SKIRT BURIED CONSTRUCTION DEBRIS AS REQUIRED AND FILL TO SUBGRADE u/ Z
o PREPARED 4-6 INCHES DEEP. OR PROVIDING A LOW SUPPORT UNDER THE SKIMMER OF STONE OR TIMBER. ELEVATIONS WITH A CLEAN SELECT-FILL COMPACTED AS SPECIFIED. 0 0
I Z MIN. 8" DEEP & 4" WIDE. 6. SEED ON A FRESHLY PREPARED SEED BED AND COVER SEED LIGHTLY. 4. PLACE THE BARREL (TYPICALLY 4-INCH SCHEDULE 40 PVC PIPE) ON A FIRM,N 2 - 3 LBS PER 1000 S.F. (SEE MIXTURE BELOW 6. DISPOSAL: CLEARED, GRUBBED, STRIPPED OR EXCAVATED SPOIL SHALL O
) SMOOTH FOUNDATION OF IMPERVIOUS SOIL. DO NOT USE PERVIOUS MATERIAL
7. MULCH IMMEDIATELY AFTER SEEDING AND ANCHOR MULCH. OPENING FOR WATER ENTRY BE REMOVED FROM SITE AND DISPOSED OF IN ACCORDANCE WITH ALL j
SUCH A:S SAND, GRAVEL, OR CRUSHED STONE AS BACKFILL AROUND THE PIPE. APPLICABLE LOCAL AND STATE CODES. LJ Cn
GRAIN STRAW & HAY AT 75 TO 100 LBS PER 1000 S.F. PLACE THE FILL MATERIAL AROUND THE PIPE SPILLWAY IN 4-INCH LAYERS AND 7. BORROW MATERIAL: THE CONTRACTOR SHALL FURNISH BORROW m
WOOD CHIPS AT 500 LBS. PER 100E S.F. COMPACT IT UNDER AND AROUND THE PIPE TO AT LEAST THE SAME DENSITY AS THE G' a
NOTES: JUTE & MESH AS PER MANUFACTURER FLOAT ADJACENT EMBANKMENT. CARE MUST BE TAKEN NOT TO RAISE THE PIPE FROM THE MAZr_:�IAL REQUIRED FROM OFF SITE AND OBTAIN ALL REQUIRED PERMITS 01.
8. ASPHALT FOR ANCHORING MULCH SHALL BE TYPE SS-1 EMULSION AND FLEXIBLE JOINT ASSOCIATED WITH BORROW OPERATIONS.
WCONTACTz V
SYN. FENCE FABRIC SHALL BE MIN. IN WIDTH WITH ITS FOUNDATION WHEN COMPACTING UNDER THE PIPE HAUNCHES. 8, FILL AND COMPACTION: AFTER STRIPPING THOSE AREAS DESIGNATED TO
WITH 30 LB IN TENSILE STRENGTH FOR STANDARD FABRIC APPLIED AT A RATE OF 100E GAL. PER ACRE FOR SLOPE STABILIZATION, FIRM
/ AND 150 GAL. PER TON OF STRAW FOR ANCHORING STRAW. BARREL PIPE RECEIVE FILL SHOULD BE PROOFROLLED. THE TOP 8"' OF SUBGRADE SHALL L
AND 50 PLACE A MINIMUM DEPTH OF 2 FEET OF COMPACTED BACKFILL OVER THE PIPE BE COMPACTED TO AT LEAST 98% OF MAXIMUM DENSITY AT OPTIMUM Q CD
2. FABRIC
SPILLWAY BEFORE CROSSING IT WITH CONSTRUCTION EQUIPMENT. IN NO CASE MOISTURE CONTENT. ANY AREA WHICH PUMPS OR RUTS EXCESSIVELY N
C SHALL BE CONTINUOUS LENGTH. IF JOINTS ARE WITHIN THE PLANTING SEASON, IF POSSIBLE. IF GRASS STAND SHOULD BE FOR EXTRA STRENGTH. 9. INSPECT ALL SEEDED AREAS AND MAKE NECESSARY REPAIRS OR RESEED REFER TO TABLE FOR REQUIRED LENGTH.
NECESSARY, LAP FABRIC POST TO POST. OVER 60% DAMAGED, REESTABLISH FOLLOWING ORIGINAL LIME, FERTILIZER SHOULD THE PIPE CONDUIT BE INSTALLED BY CUTTING A TRENCH THROUGH THE DAM SHOULD BE UNDERCUT AND REPLACED WITH A CLEAN, SILTY OR CLAYEY 0
AFTER THE EMBANKMENT IS COMPLETE. O
3. STEEL POST SHALL BE MIN 4' IN HEIGHT AND BE OF THE AND SEEDING RATES. SAND HAVING A UNIFIED SOIL CLASSIFICATION OF SP, SM, OR SC. FILL
5. ASSEMBLE THE SKIMMER FOLLOWING THE MANUFACTURER INSTRUCTIONS, OR -i
SELF-FASTENER STEEL ANGLE TYPE. 10. CONSULT CONSERVATION INSPECTOR ON MAINTENANCE, TREATMENT, AND MATERIAL 5" OUTSIDE OF BUILDING AREAS SHALL THEN BE PLACED IN Z
FERTILIZATION AFTER PERMANENT COVER IS ESTABLISHED. OUTLET END AS DESIIGNED. 0
6. LAY THE ASSEMBLED SKIMMER ON THE BOTTOM OF THE BASIN WITH THE LAYERS NOT TO EXCEED 8" AND COMPACTED TO AT LEAST 95% OF THE m W TEMPORARY SILT FENCE 11. SEED FOR TEMPORARY AND PERMANENT APPLICATIONS SHALL BE: CONNECT TO OUTLET STANDARD PROCTOR MAXIMUM DRY DENSITY (ASTM D-698) WITH THE
20% CARPET GRASS PIPE OR RISER. FLEXIBLE JOINT AT THE INLET OF THE BARREL PIPE. ATTACH THE FLEXIBLE JOINT TO >-
NTS
THE BARREL PIPE AND POSITION THE SKIMMER OVER THE EXCAVATED PIT OR UPPER 12 INCHES OF SUBGRADE BEING COMPACTED TO 98% OF THE Cl) Z ;-
24% BERMUDA GRASS REFER TO TABLE FOR SUPPORT. BE SURE TO ATTACH A ROPE TO THE SKIMMER AND ANCHOR IT TO THE STANDARD PROCTOR MAXIMUM DRY DENSITY. FILL MATERIALS WITHIN � Z
20% TURF FESCUE 10% CREEPING RED FESCUE REQUIRED DIAMETER 0
24% ANNUAL RYE GRAIN SIDE OF' THE BASIN. THIS WILL BE USED TO PULL THE SKIMMER TO THE SIDE FOR BUILDING AREAS TO A LINE OUTSIDE THE BUILDING AREAS SHALL BE
*BERMUDA SEED SHALL BE HULLED FOR WARM WEATHER MAINTENANCE. PLACED IN LAYERS NOT TO EXCEED 8" AND COMPACTED TO AT LEAST 98% Q Q O
GERMINATION SHALLL BE A MIN. OF 85%.
7, EARTHEN SPILLWAYS---INSTALL THE SPILLWAY IN UNDISTURBED SOIL TO THE OF THE STANDARD PROCTOR MAXIMUM DRY DENSITY ASTM D-698 WITH
PLANTING. PURITY SEED SHALL BE A MIN. OF 98% AND GREATEST EXTENT POSSIBLE. THE ACHIEVEMENT OF PLANNED ELEVATIONS, GRADE, THE UPPER 12 INCHES OF SUBGRADE BEING COMPACTED IN 6 INCH Z
DESIGN WIDTH, AND ENTRANCE AND EXIT CHANNEL SLOPES ARE CRITICAL TO THE LAYERS TO 100% OF THE STANDARD PROCTOR MAXIMUM DRY DENSITY. IN V
ALL DISTURBED AREA SHALL BE SEEDED WITHIN 15 DAYS OF THE COMPLETION OF STANDARD SKIMMER DETAIL (FAIRCLOTH) SUCCESSFUL OPERATION OF THE SPILLWAY. THE SPILLWAY SHOULD BE LINED AREAS WHERE NO STRUCTURAL FILL IS TO BE PLACED THE UPPER 12 N J
GRADING. CONSULT CONSERVATION ENGINEER OR SOIL CONSERVATION SERVICE FOR WITH LAMINATED PLASTIC OR IMPERMEABLE GEOTEXTILE FABRIC. THE FABRIC MUST BE INCHES OF IN-PLACE SUBGRADE SHOULD BE COMPACTED TO AT LEAST 98% J U
ADDITIONAL INFORMATION CONCERNING OTHER ALTERNATIVES FOR VEGETATION OF N.T.S. WIDE AND LONG ENOUGH TO COVER THE BOTTOM AND SIDES AND EXTEND ONTO THE OF THE STANDARD PROCTOR MAXIMUM DRY DENSITY. IF THE MATERIAL IS '•
DENUDED AREAS. THE ABOVE VEGETATION RATES ARE THOSE WHICH DO WELL TOP OF THE DAM FOR ANCHORING IN A TRENCH. THE EDGES MAY BE SECURED WITH TOO DRY TO COMPACT TO THE REQUIRED DENSITY EACH LAYER SHALL BE N Q
UNDER LOCAL CONDITIONS, OTHER SEEDING SCHEDULES MAY BE POSSIBLE. 8-INCH STAPLES OR PINS. THE FABRIC MUST BE LONG ENOUGH TO EXTEND DOWN WETTED IN ACCORDANCE WITH COMPACTION REQUIREMENTS. IF THE MATERIAL
THE SLOPE AND EXIT ONTO STABLE GROUND. THE WIDTH OF THE FABRIC MUST BE IS TOO WET TO SECURE PROPER COMPACTION, IT SHALL BE HARROWED J W Z V)
ONE PIECE, NOT JOINED OR SPLICED; OTHERWISE WATER CAN GET UNDER THE REPEATEDLY OR OTHERWISE AERATED WITH SUITABLE EQUIPMENT UNTIL Q Z W Z
FABRIC. IF THE LENGTH OF THE FABRIC IS INSUFFICIENT FOR THE ENTIRE LENGTH OF OPTIMUM MOISTURE CONTENT IS OBTAINED. FILL SHALL BE PLACED IN SUCH F. Z W
THE SPIILLWAY, MULTIPLE SECTIONS, SPANNING THE COMPLETE WIDTH, MAY BE USED. A MANNER THAT THE SURFACE WILL DRAIN READILY AT ALL TIMES. SEE W W
NPDES STABILIZATION TIMEFRAMES THE UPIPER SECTION(S) SHOULD OVERLAP THE LOWER SECTION(S) SO THAT WATER STRUCTURAL NOTES AND SOILS REPORT FOR ADDITIONAL REQUIREMENTS.
TOP TOP CANNOT FLOW UNDER THE FABRIC. SECURE THE UPPER EDGE AND SIDES OF THE 9. LAYOUT: THE CONTRACTOR SHALL PROVIDE ALL LAYOUT REQUIRED TO 0 V m
SITE AREA DESCRIPTION STABILIZATION TIMEFRANVIE EXCEPTIONS - FABRIC IN A TRENCH WITH STAPLES OR PINS. (ADAPTED FROM "A MANUAL FOR CONSTRUCT HIS WORK.
61 i j DESIGNING, INSTALLING AND MAINTAINING SKIMMER SEDIMENT BASINS." FEBRUARY, 10. THE CONTRACTOR IS RESPONSIBLE FOR THE LOCATION AND PROTECTION
Q PERIMETER DIKES, SWALES, DITCHES AND SLOPES 7 DAYS NONE OF EXISTING UTILITIES DURING CONSTRUCTION.
Q, BOTTOM 1999. 1 . W. FAIRCLOTH & SON.).
11. EXISTING BOUNDARY INFORMATION BY GIS & AERIAL PHOTOGRAPHY AND
HIGH QUALITY WATER (HQW) ZONES 7 DAYS NONE 1 I I 8, INLETS-DISCHARGE WATER INTO THE BASIN IN A MANNER TO PREVENT EROSION. PROVIDED BY OWNER.
Q 3 3 USE TEMPORARY SLOPE DRAINS OR DIVERSIONS WITH OUTLET PROTECTION TO DIVERT 12 THE CONTRACTOR SHALL VERIFY DIMENSIONS AT �JOBSITE.
SO' SLOPES STEEPER THAN 3:1 7 DAYS IF SLOPES ARE 10' OR (LESS IN LENGTH AND ARE NOT ' ' 7-, , ' ' ' SEDIMENT LADEN WATER TO THE UPPER END OF THE POOL AREA TO IMPROVE BASIN . �4
4/Al STEEPER THAN 2:1 14 DAYS ARE ALLOWED TRAP EFFICIENCY (REFERENCES: RUNOFF CONTROL MEASURES AND OUTLET 13. THE CONTRACTOR IS RESPONSIBLE FOR THE COORDINATION OF E_4
RELOCATION OR DISCONNECTION OF ALL EXISTING UTILITIES WITH
O SLOPES 3:1 OR FLATTER 14 DAYS 7 DAYS FOR SLOPES GREATER THAN 50' IN LENGTH PROTECTION. �
APPLICABLE AGENCIES AND AUTHORITIES.
ALL OTHER AREAS WITH SLOPES FLATTER THAN 4:1 14 DAYS NONE, EXCEPT FOR PERIIMETERS AND HQW ZONES SEDIMENT BASIN SECTION 14. ALL PAVEMENT AND BASE MATERIALS AND WORKMANSHIP SHALL W
9. EROSION CONTROL-CONSTRUCT THE STRUCTURE SO THAT THE DISTURBED AREA CONFORM TO NCDOT STANDARDS. v Z
N.T.S. Is MINIMIZED. DIVERT SURFACE WATER AWAY FROM BARE AREAS. COMPLETE THE ta4
15. ALL AREAS SHALL BE GRADED FOR POSITIVE DRAINAGE. O 'b
F,a EMBANKMENT BEFORE THE AREA IS CLEARED. STABILIZE THE EMERGENCY SPILLWAY U4 at
16. CONTRACTOR SHALL NOTE THAT EARTHWORK QUANTITIES ARE HIS
EMBANKMENT AND ALL OTHER DISTURBED AREAS ABOVE THE CREST OF THE
RESPONSIBILITY. PLANS DO NOT REPRESENT A BALANCED EARTHWORK ��.,(�O, Ln
PRINCIPAL SPILLWAY IMMEDIATELY AFTER CONSTRUCTION (REFERENCES: SURFACE CONDITION. �
STABILIZATION). N L
6" MIN. 10. INSTALL POROUS BAFFLES AS SPECIFIED IN PRACTICE 6.65, POROUS BAFFLES.
GENERAL NOTES: CLASS A STONE �J,
��' 11, AFTER ALL THE SEDIMENT-PRODUCING AREAS HAVE BEEN PERMANENTLY p
EROSION CONTROL NOTES AND MAINTENANCE PLAN Z
2" - 3" STABILIZED, REMOVE THE STRUCTURE AND ALL THE UNSTABLE SEDIMENT. r-
�`L DETERMINE BORROW PIT DEWATERING BASIN SIZE USING SMOOTH THE AREA TO BLEND WITH THE ADJOINING AREAS AND STABILIZE PROPERLY 1. ALL EROSION AND SEDIMENT CONTROL MEASURES WILL BE CHECKED FOR W r+
COARSE AGGREGATE V = 8.0203 * Q * T, WHERE V IS VOLUME (FT3), Q IS FILTRATION STABILITY AND OPERATION FOLLOWING EVERY RUNOFF-PRODUCING RAINFALL, Z �?
GEOTEXTILE (REFERENCES: SURFACE STABILIZATION). BUT IN NO CASE, LESS THAN ONCE EVERY WEEK AND WITHIN 24 HOURS OF o o
PUMP FLOW RATE (GPM), AND T IS DEWATERING TIME (HR). �j
DEWAUSE TERING^TIMEFLOW
OFRATE
HOURS1000 GPM AND A MINIMUM MAINTENANCE 2 EVERY A L POINTS OF (EGRESS WILL HAVE CONSTRUCTIION ENTRANCES THAT WILL O a
TEMPORARY GRAVEL BE PERIODICALLY TOP-DRESSED WITH AN ADDITIONAL 2 INCHES OF #4 STONE
RISER SHALL BE A NON-PERFORATED, SMOOTH OR CORRUGATED STEEL POST STONE ENERGY INSPECT SKIMMER SEDIMENT BASINS AT LEAST WEEKLY AND AFTER EACH SIGNIFICANT TO MAINTAIN PROPER DEPTH. THEY WILL BE MAINTAINED IN A CONDITION TO
MATERIAL WITH A FLASHBOARD OPTION. DISSIPATOR (ONE-HALF INCH OR GREATER) RAINFALL EVENT AND REPAIR IMMEDIATELY. PREVENT MUD OR SEDIMENT FROM LEAVING THE SITE. IMMEDIATELY REMOVE
CONSTRUCTION ENTRANCEREMOVE SEDIMENT AND RESTORE THE BASIN TO ITS ORIGINAL DIMENSIONS WHEN OBJECTIONABLE MATERIAL SPILLED WASHED OR TRACKED ONTO THE
NTS CONSTRUCT THE COIR FIBER BAFFLE IN ACCORDANCE WITH ROADWAY SEDIMENT ACCUMULATES TO ONE-HALF THE HEIGHT OF THE FIRST BAFFLE. PULL CONSTRUCTION ENTRANCE OR ROADWAYS.
STANDARD DRAWING 1640.01 AND WITH MATERIAL THAT MEETS THE THE SKIIMMER TO ONE SIDE 80 THAT THE SEDIMENT UNDERNEATH IT CAN BE 3. DIVERSION DITCHES WILL BE CLEANED OUT IMMEDIATELY TO REMOVE
SPECIFICATIONS OF ROADWAY STANDARD 1060-14. = EXCAVATED. EXCAVATE THE SEDIMENT FROM THE ENTIRE BASIN, NOT JUST AROUND SEDIMENT OR OBSTRUCTIONS FROM THE FLOW AREA. THE DIVERSION RIDGES
THE SKIIMMER OR THE FIRST CELL. MAKE SURE VEGETATION GROWING IN THE BOTTOM WILL ALSO BE REPAIRED. SWALES MUST BE TEMPORARILY STABILIZED WITHIN
PROVIDE 5' STEEL POST OF THE SELF-FASTENER ANGLE STEEL TYPE. OF THE BASIN DOES NOT HOLD DOWN THE SKIMMER. 21 CALENDAR DAYS OF CEASE OF ANY PHASE OF ACTIVITY ASSOCIATED WITH A
INSTALL STEEL POSTS WITH NO MORE THAN 3' OF THE POST APPEARING SWALE.
ABOVE THE GROUND. REPAIR THE BAFFLES IF THEY ARE DAMAGED. RE-ANCHOR THE BAFFLES IF WATER 4. SEDIMENT WILL BE REMOVED FROM BEHIND THE SEDIMENT FENCE WHEN
1/4 V IS FLOW/ING UNDERNEATH OR AROUND THEM. IT BECOMES HALF FILLED. THE SEDIMENT FENCE WILL BE REPAIRED AS
ATTACH THE COIR FIBER MAT TO THE STEEL POSTS WITH WIRE OR „ n NECESSARY TO MAINTAIN A BARRIER. STAKES MUST BE STEEL. STAKE o
OTHER ACCEPTABLE MEANS AND STAPLED INTO THE BOTTOM AND SIDE =2 W MIN. RISER IF THE SKIMMER IS CLOGGED WITH TRASH AND THERE IS WATER IN THE BASIN, SPACING WILL BE 6 FEET MAX. WITH THE USE OF EXTRA STRENGTH FABRIC, I;
SLOPES OF THE BASIN WITH 12" STAPLES. USUALLY JERKING ON THE ROPE WILL MAKE THE SKIMMER BOB UP AND DOWN AND WITHOUT WIRE BACKING. STAKE SPACING WILL BE 8 FEET MAX. WHEN N
DISLODGE THE DEBRIS AND RESTORE FLOW. IF THIS DOES NOT WORK, PULL THE STANDARD STRENGTH FABRIC AND WIRE BACKING ARE: USED. IF ROCK FILTERS CO N
INSTALL TYPE 2 GEOTEXTILE ON SIDE SLOPES AND BOTTOM OF BASIN AT SKIMMER OVER TO THE SIDE OF THE BASIN AND REMOVE THE DEBRIS. ALSO CHECK ARE DESIGNED AT LOW POINTS IN THE SEDIMENT FENCE, THE ROCK WILL BE Z o
INLET AS SHOWN IN THE DETAIL. THE ORIFICE INSIDE THE SKIMMER TO SEE IF IT IS CLOGGED; IF SO REMOVE THE REPAIRED OR REPLACED IF IT BECOMES HALF-FULL OF SEDIMENT, NO LONGER
DEBRIS. DRAINS AS DESIGNED OR IS DAMAGED.
USE THE TYPICAL SECTION SHOWN FOR THE BORROW PIT DEWATERING 5. ALL SEEDED AREAS WILL BE FERTILIZED, RESEEDED AS NECESSARY, AND P4 W
BASIN AS A GUIDE. THE BASIN MAY HAVE ANY TYPE CONFIGURATION AS EARTH DIKE IF THE SKIMMER ARM OR BARREL PIPE IS CLOGGED, THE ORIFICE CAN BE REMOVED MULCHED, ACCORDING TO SPECIFICATIONS IN THE VEGETATIVE PLAN, TO W Z
LONG AS SUFFICIENT VOLUME IS PROVIDED AND PROVISIONS ARE MADE AND THE OBSTRUCTION CLEARED WITH A PLUMBER'S SNAKE OR BY-FLUSHING WITH MAIN..AIN A VIGOROUS, DENSE VEGETATIVE COVER, ALL SLOPES WILL BE `4
FOR A NON-PERFORATED RISER. PLAN WATER. BE SURE AND REPLACE THE ORIFICE BEFORE REPOSITIONING THE SKIMMER. STABILIZED WITHIN 21 CALENDAR DAYS. ALL OTHER AREAS WILL BE STABILIZED
WITHIN 15 WORKING DAYS. : WATER QUALITY REQUIRES ALL SEEDED AREAS
DO NO EXCEED 3.5 FT. IN HEIGHT FOR THE EARTH DIKES REQUIRED FOR CHECK THE FABRIC LINED SPILLWAY FOR DAMAGE AND MAKE ANY REQUIRED WILL BE FERTILIZED, RESEEDED AS NECESSARY AND MULCHED ACCORDING TO x
TOP BANK ELEV. BORROW PIT DEWATERING BASIN. REPAIRS WITH FABRIC THAT SPANS THE FULL WIDTH OF THE SPILLWAY. CHECK THE SPECIFICATIONS IN THE VEGETATIVE PLAN TO MAINTAIN A VIGOROUS, DENSE
VARIES FROM 38' TO 30' EMBANKMENT, SPILLWAYS, AND OUTLET FOR EROSION DAMAGE, AND INSPECT THE VEGETATIVE COVER. ALL PERIMETER DIKES, SWALES, HORIZONTAL TO ' DITCHES, r
THE BORROW PIT DEWATERING BASIN SIZE IS VARIABLE AND DEPENDENT = EMBANKMENT FOR PIPING AND SETTLEMENT. MAKE ALL NECESSARY REPAIRS PERIMETER SLOPES, ALL SLOPES STEEPER THAN 3 VERTICAL (3:1) AND ALL `J
ON SPECIFIC SITE REQUIREMENTS AS WELL AS PROPOSED CONSTRUCTION c0
IMMEDIATELY. REMOVE ALL TRASH AND OTHER DEBRIS FROM THE SKIMMER AND HIGH QUALITY WATER (HQW) ZONES SHALL BE ' 1 PROVIDED TEMPORARY OR
1 OPERATIONS. 1.0 f �{ 1.0 f POOL AREAS. PERMANENT STABILIZATION WITH GROUND COVER AS SOON AS PRACTICABLE BUT
MINE RECLAMATION 1� -\FINAL NORMAL WATER ELEVATION 1 I IN ANY EVENT WITHIN SEVEN (7) CALENDAR DAYS FROM THE LAST N
BACKSLOPE 3 SUBMIT THE SIZE, LOCATION AND RISER PIPE MATERIAL FOR APPROVAL 1�
AVERAGE PRIOR TO CONSTRUCTION. 1 1 ,� FREEZING WEATHER CAN RESULT IN ICE FORMING IN THE BASIN. SOME SPECIAL LAND-DISTURBING ACTIVITY. ALL OTHER DISTURBED AREAS SHALL BE PROVIDED o
DEPTH = 25' i� PRECAUTIONS SHOULD BE TAKEN IN THE WINTER TO PREVENT THE SKIMMER FROM TEMPORARY OR PERMANENT STABILIZATION WITH GROUND COVER AS SOON AS r�
L� PLUGGING WITH ICE.
1 PUMP THE EFFLUENT INTO THE BORROW PIT DEWATERING BASIN TO A PRACTICABLE BUT IN ANY EVENT WITHIN FOURTEEN (14) CALENDAR DAYS FROM
2 MAXIMUM DEPTH OF 6 IN. BELOW TOP OF THE EARTH DIKE. UNCLASSIFIED THE LAST LAND-DISTURBING ACTIVITY. �--{ 5 r
BOTTOM ELEV. VARIES EARTH MATERIAL ANTI-SEEP 6. FLOCCULANTS WILL BE USED TO ADDRESS TURBIDITY ISSUES. THE � `/ 00
STEEL POSTS
PROVIDE A STONE ENERGY DISSIPATER PAD AT THE OUTLET OF THE COLLAR PUMPS, TANKS, HOSES AND INJECT SYSTEMS WILL BE CHECKED FOR N Ln
en
PUMP DISCHARGE HOSE AND OUTLET OF THE RISER BARREL IN PROBLEMS OR TURBID DISCHARGES DAILY. �� Q U
ACCORDANCE WITH ROADWAY STANDARD DRAWING 876.02 FOR OUTLET COIR FILTER VARIABLE C/) W Z
MINE SLOPE & RECLAMATION CROSS SECTION W/O DITCH. BAFFLE r4 z
NTS TYPICAL SECTION VIEW O o
BAFFLE CONSTRUCTION SPECIFICATION U o z
NOTES:
1. DEPTH OF MINE WILL BE DICTATED BY SUITABLE MATERIAL. OUTLET ZONE 1. GRADE THE BASIN SO THAT THE BOTTOM IS LEVEL FRONT TO BACK AND SIDE `~ Z
BORROW PIT DEWATERING BASIN DETAIL FIRST CHAMBER 2I5% OF
CHAMBER
2. AT RECLAMATION ALL BANKS ABOVE NORMAL WATER WILL BE INLET ZONE 25% OF SURFACE AREA TO SIDE. 0c i a Z
SLOPED & GRADED AT 4:1 & STABILIZED WITH GRASSING. 25% OF SURFACE 2.5% OF SURFACE p x
AREA OF SURFACE AREA AREA 2. INSTALL POSTS OR SAW HORSES ACROSS THE WIDTH OF THE SEDIMENT TRAP N P.
ARE (PRACTICE 6.62, SEDIMENT FENCE).
3. STEEL POSTS SHOULD BE DRIVEN TO A DEPTH OF 24 INCHES, SPACED A
MIN. 20' MAXIMUM OF 4 FEET APART, AND INSTALLED UP THE SIDES OF THE BASIN AS WELL.
THE TOP OF THE FABRIC SHOULD BE 6 INCHES HIGHER THAN THE INVERT OF THE
5' CREST WIDTH SPILLWAY. TOPS OF BAFFLES SHOULD BE 2 INCHES LOWER THAN THE TOP OF THE
EXTEND 9 GAUGE TO BERMS.
COMPACTED SOIL BASIN SIDE OR INSTALL OUTLET STRUCTURE
ROADWAY T-POST TO ANCHOR SEE DETAIL 4. INSTALL AT LEAST THREE ROWS OF BAFFLES BETWEEN THE INLET AND OUTLET
BAFFLE TO SIDE OF DISCHARGE POINT. BASINS LESS THAN 20 FEET IN LENGTH MAY USE 2 BAFFLES,
DRAPE BAFFLE MATERIAL OVER WIRE BASIN AND SECURE TO INFLOW SD PIPE CONTINUES
STRAND AND SECURE WITH PLASTIC TIES VERTICAL POST cc � m TO OUTLET LOCATION 5, WHEN USING POSTS, ADD A SUPPORT WIRE OR ROPE ACROSS THE TOP OF THE Licence#C-3641
AT POSTS AND ON WIRE EVERY 12" 4' MAX. -I STRUCTURE D D MEASURE TO PREVENT SAGGING.
IIIIIIIII01111 q -11 -9
F_ F_ -- 6. WRAP POROUS MATERIAL, LIKE JUTE BACKED BY COIR MATERIAL, OVER A 19016
1 r m SAWHORSE OR THE TOP WIRE. HAMMER REBAR INTO THE SAWHORSE LEGS FOR
HAUL ROAD SECTION RIPRAP OR ANCHORING. THE FABRIC SHOULD HAVE FIVE TO TEN PERCENT OPENINGS IN THE
NTS 9 GAUGE MIN. HIGH 3' MIN. =I VARIABLE DEPTH SLOPE DRAIN WEAVE. ATTACH FABRIC TO A ROPE AND A SUPPORT STRUCTURE WITH ZIP TIES, DES. JKB
TENSION WIRE STRAND - WIRE, OR STAPLES. CKD. JPN
SHALL SECURED
TO POSTT TO SUPPORT ECURE BOTTOM OF BAFFLE TO
- 7. THE BOTTOM AND SIDES OF THE FABRIC SHOULD BE ANCHORED IN A TRENCH DRWN' ZAC
_ - ___ ____= I- S
BAFFLE MATERIAL GROUND WITH 12" STAPLES AT EARTHEN EMBANKMENT OR PINNED WITH 8-INCH EROSION CONTROL MATTING STAPLES.
BAFFLE MATERIAL 12" MAXIMUM SPACING WITH STABILIZED SIDE SKIMMER SEE DETAIL DATE 11/02/23
SLOPES CONNECT SKIMMER TO 8. DO NOT SPLICE THE FABRIC, BUT USE A CONTINUOUS PIECE ACROSS THE BASIN.
BAFFLE MATERIAL OUTLET ORIFICE.
REMOVE SKIMMER AND �� Ni
MAINTENANCE
•��N 0�RETURN BASIN AND
NOTES: * IF THE TEMPORARY SEDIMENT •
1. MINING TO COMMENCE ON AN AS NEEDED BASIS. OUTLET STRUCTURE TO •• .S 0
BASIN WILL BE CONVERTED TO A 1 1 GAUGE INSPECT BAFFLES AT LEAST ONCE A WEEK AND AFTER EACH RAINFALL. MAKE ANY • • E
2. RECLAMATION IS REQUIRED PRIOR TO MINE CLOSE OUT. PERMANENT STORMWATER BASIN LANDSCAPING STORMWATER DESIGN REQUIRED REPAIRS IMMEDIATELY. •:y
3. NO PERMANENT STRUCTURES OR PERMANENT EMPLOYEES ARE CONDITIONS @ 2 9:�
OF GREATER DEPTH, THE BAFFLE STAPLE EMERGENCY CONSTRUCTION - S E A L
PROPOSED ON SITE. HEIGHT SHOULD BE BASED ON _ - _ SPILLWAY BE SURE TO MAINTAIN ACCESS TO THE BAFFLES. SHOULD THE FABRIC OF A BAFFLE ;
4. THE HOURS OF OPERATION WILL BE MONDAY THRU FRIDAY FROM 7:30 THE POOL DEPTH DURING USE AS I - COMPLETION. COLLAPSE, TEAR, DECOMPOSE, OR BECOME INEFFECTIVE, REPLACE IT PROMPTLY. 0 162E :
AM TO 5:00 PM. A TEMPORARY SEDIMENT BASIN.5. III=III= I I I III=I I=I �► ',�23
PLANTINGRS S AS HALL BE NATURAL VEGETATION SUPPLEMENTED WITH POROUS BAFFLES IN A SEDIMENT BASIN. THE FLOW IS DISTRIBUTED EVENLY REMOVE SEDIMENT DEPOSITS WHEN IT REACHES HALF FULL TO PROVIDE ADEQUATE p••�,N �NE� •��••�
NOTE: INSTALL THREE (3) COIR FIBER BAFFLES STORAGE VOLUME FOR THE NEXT RAIN AND TO REDUCE PRESSURE ON THE •
NECESSARY TO MEET REQUIREMENTS. IN BASINS AT DRAINAGE OUTLETS WITH A ACROSS THE BASIN TO REDUCE FLOW RATES AND TURBULENCE, RESULTING BAFFLES. TAKE CARE TO AVOID DAMAGING THE BAFFLES DURING CLEANOUT. '�'�.,FpH'K. P`••
6. A 30FT ACCESS EASEMENT SHALL BE PROVIDED FOR ALL MINES TO SPACING OF 1/4 THE BASIN LENGTH. TWO (2) IN GREATER SEDIMENT RETENTION. SEDIMENT DEPTH SHOULD NEVER EXCEED HALF THE DESIGNED STORAGE DEPTH.
ALLOW COIR FIBER BAFFLES CAN BE INSTALLED IN
ACCESS TO NEW BRITTON HWY E ALONG THE EXISTING HAUL ROAD. THE BASINS LESS THAN 20 FT. IN LENGTH AFTER THE CONTRIBUTING DRAINAGE AREA HAS BEEN PROPERLY STABILIZED, REMOVE
7. MINE OPERATOR SHALL USE A WATER TRUCK TO CONTROL DUST ALONG WITH A SPACING OF 1/3 THE BASIN LENGTH. TYPICAL SKIMMER SEDIMENT BASIN & POROUS BAFFLE DETAIL ALL BAFFLE MATERIALS AND UNSTABLE SEDIMENT DEPOSITS, BRING THE AREA TO
THE HAUL GRADE, AND STABILIZE IT.
ROAD AS NECESSARY.
FIGURE 6.65b COIR FIBER BAFFLE DETAIL NTS
CROSS SECTION OF A POROUS BAFFLE IN
A SEDIMENT BASIN. NOTE: SEE PLAN FOR BAFFLE LOCATIONS. C2
I