NCG021049_Scanned Site Plans22_20241114

1 2 3 4 5 6 7 8
12" FLOW
IMPERVIOUS DIKE \ CLEAN WATER PUMP-AROUND PUMP APPROXIMATE STABILIZED OUTLET OR NATIVE
(SEE NOTE 8) BASE STREAMBED STONE MATERIAL
FLOW
2 5"
m WATER
SURFACE TEMPORARY
i I , TEMPORARY FLEXIBLE HOSE TOP OF BANK (SEE FLEXIBLE
NOTE HOSE
z
RIP RAP \
12 30cm 3B \ EXISTING CHANNEL \/ X \ \
"(10cm) - \
� D
(15cm) I i I �' '� 15cm 4"(1Ocm)
WORKING X2
_ � I l AREA
0 \
\ IMPERVIOUS X5
6"
TEMPORARYDIKE
(15cm) "—'�'—' d ,+,-_,Wr_ ,•� l FLEXIBLE \ (SEE DETAIL, TEMPORARY STABILIZED OUTLET - SECTION A-A'
_ I THIS SHEET)
2 5 ��� � ^�@ =1�1!=1 I!!I!!! HOSE
{. �1> > ti ��•` I=lII=I I!_=!! I APPROXIMATE BASE FLOW WATER LEVEL
4"-6"
(10-15c ) I I y �� 3 ,� a `.� s _ i= DEWATERING PUMP j I TEMPORARY STABILIZED OUTLET
_ =T _ (SEE NOTES 5 AND 6) SANDBAG/STONE (SEE NOTE 8)
`� _ —!i!�i l I-1 I I-1!I-!i I- � v
A,
I.I I .I1- e�I SEDIMENT REMOVAL DEVICE '� X1 I
® ® {{I - I! —!!!—!!!�)I1=Ill WORKING AREA
(SEE DETAIL THIS SHEET) — — — — — — — — — —
FLOW
PLAN VIEW
IMPERVIOUS MEMBRANE
! Ill=1 { h (SEE NOTE 8)
6„
(15cm) =1_11 ICI- 1 — I I�_ — �� =1I1-I�l-!{!—!! --3-•- IMPERVIOUS DIKE
-�-� TEMPORARY STONE
*NOTE: FLEXIBLE TOE APPROXIMATE
IN LOOSE SOIL CONDITIONS, THE USE `— I HOSE SEDIMENT BAG TOP OF OF BASE C
CRITICAL POINTS NOTES: 0 �T (SEE NOTE 4) BANK FLOW
A. OVERLAPS AND SEAMS *HORIZONTAL STAPLE SPACING SHOULD BE OF STAPLE THAN
STAKE LENGTHS BANK
B. PROJECTED WATER LINE ALTERED IF NECESSARY TO ALLOW STAPLES TO GREATER THAN PROPERLY
MAY C FLOW X WATER
C. CHANNEL BOTTOM/SIDE SLOPE VERTICES SECURE THE CRITICAL POINTS ALONG THE NECESSARY TO PROPERLY SECURE SURFACE
A A CHANNEL SURFACE. THE RECP S. FILTER FABRIC\� '� /\j ` ON
`WN ,
� / 0
(SEE NOTE 6) \ \ \B B
C C **IN LOOSE SOIL CONDITIONS, THE USE OF X6 X7
STAPLE OR STAKE LENGTHS GREATER THAN
+' 6"(15CM) MAY BE NECESSARY TO PROPERLY
SECURE THE RECP'S.
SEDIMENT REMOVAL DEVICE
DIMENSIONS (VALUES TO BE PROVIDED BY DESIGNER)
VARIABLE VALUES TYPICAL UNIT DESCRIPTION
X1 4 FT. SPLASH PAD/STABILIZED OUTLET WIDTH
X2 6 FT. SPLASH PAD LENGTH
X3 8 IN, SPLASH PAD/STABILIZED OUTLET THICKNESS
ROLLED EROSION CONTROL PRODUCTS ROLLED EROSION CONTROL PRODUCTS X5 8 FT. STREAM BED WIDTH
DESIGN AND CONSTRUCTION NOTES DESIGN AND CONSTRUCTION NOTES
X6 6 FT. SEDIMENT BAG PAD ''LENGTH
1. GRADE THE SURFACE OF INSTALLATION AREAS SO THAT THE GROUND IS SMOOTH AND LOOSE. WHEN SEEDING PRIOR TO 1. GRADE THE SURFACE OF INSTALLATION AREAS SO THAT THE GROUND IS SMOOTH AND LOOSE. WHEN SEEDING PRIOR TO
INSTALLATION, FOLLOW THE STEPS FOR SEED BED PREPARATION, SOIL AMENDMENTS, AND SEEING AS FOUND IN THE NCDEQ INSTALLATION, FOLLOW THE STEPS FOR SEED BED PREPARATION, SOIL AMENDMENTS, AND SEEING AS FOUND IN THE NCDEQ X7 4 FT. SEDIMENT BAG SETBACK FROM TOP OF BANK
MANUAL, PRACTICE STANDARDS AND SPECIFICATION SECTION 6.1. ALL GULLIES, RILLS AND ANY OTHER DISTURBED AREAS MUST MANUAL, PRACTICE STANDARDS AND SPECIFICATION SECTION 6.1. ALL GULLIES, RILLS AND ANY OTHER DISTURBED AREAS MUST
BE FINE GRADED PRIOR TO INSTALLATION. SPREAD SEED BEFORE ROLLED EROSION CONTROL PRODUCTS (RECP)INSTALLATION. BE FINE GRADED PRIOR TO INSTALLATION. SPREAD SEED BEFORE ROLLED EROSION CONTROL PRODUCTS (RECP)INSTALLATION. X8 9 IN. SEDIMENT BAG PAD THICKNESS
REMOVE ALL LARGE ROCKS, DIRT CLODS, STUMPS, ROOTS, GRASS CLUMPS, TRASH, AND OTHER OBSTRUCTIONS FROM THE SOIL REMOVE ALL LARGE ROCKS, DIRT CLODS, STUMPS, ROOTS, GRASS CLUMPS, TRASH, AND OTHER OBSTRUCTIONS FROM THE SOIL
SURFACE TO ALLOW FOR DIRECT CONTACT BETWEEN THE SOIL SURFACE AND THE RECP. SURFACE TO ALLOW FOR DIRECT CONTACT BETWEEN THE SOIL SURFACE AND THE RECP. X9 4 FT. IMPERVIOUS DIKE LENGTH B
2. TERMINAL ANCHOR TRENCHES ARE REQUIRED AT RECP ENDS AND INTERMITTENT TRENCHES MUST BE CONSTRUCTED ACROSS 2. TERMINAL ANCHOR TRENCHES ARE REQUIRED AT RECP ENDS AND INTERMITTENT TRENCHES MUST BE CONSTRUCTED ACROSS
CHANNELS AT 25—FOOT INTERVALS. TERMINAL ANCHOR TRENCHES SHOULD BE A MINIMUM OF 12 INCHES IN DEPTH AND 6 CHANNELS AT 25—FOOT INTERVALS. TERMINAL ANCHOR TRENCHES SHOULD BE A MINIMUM OF 12 INCHES IN DEPTH AND 6 X10 2 FT. IMPERVIOUS DIKE HEIGHT
INCHES IN WIDTH, WHILE INTERMITTENT TRENCHES NEED BE ONLY 6 INCHES DEEP AND 6 INCHES WIDE. INCHES IN WIDTH, WHILE INTERMITTENT TRENCHES NEED BE ONLY 6 INCHES DEEP AND 6 INCHES WIDE.
3. FOR INSTALLATION IN CHANNELS, EXCAVATE TERMINAL TRENCHES (12 INCHES DEEP AND 6 INCHES WIDE) ACROSS THE CHANNEL 3. FOR INSTALLATION ON SLOPES, PLACE THE RECP 2-3 FEET OVER THE TOP OF THE SLOPE AND INTO AN EXCAVATED END X11 4 IN. APPROXIMATE BASE FLOW WATER LEVEL
AT THE UPPER AND LOWER END OF THE LINED CHANNEL SECTIONS. AT 25—FOOT INTERVALS ALONG THE CHANNEL, ANCHOR TRENCH MEASURING APPROXIMATELY 12 INCHES DEEP BY 6 INCHES WIDE. PIN THE RECP AT 1 FOOT INTERVALS ALONG THE
, BACKFILL, AND COMPACT. UNROLL THE RECP DOWN (OR ALONG) THE SLOPE MAINTAINING DIRECT D50 OF STABILIZED OUTLET STONE/IMPERVIOUS
BOTTOM OF THE TRENCH
THE RECP ACROSS THE CHANNEL EITHER IN 6 INCH BY 6 INCH TRENCHES OR BY INSTALLING TWO CLOSELY SPACED ROWS OF X12 8 IN.
ANCHORS. EXCAVATE LONGITUDINAL TRENCHES 6 INCHES DEEP AND WIDE ALONG CHANNEL EDGES (ABOVE WATER LINE) IN CONTACT BETWEEN THE SOIL AND THE RECP. OVERLAP ADJACENT ROLLS A MINIMUM OF 3 INCHES. PIN THE RECP TO THE DIKE STONE
WHICH TO BURY THE OUTSIDE RECP EDGES. PLACE THE FIRST RECP AT THE DOWNSTREAM END OF THE CHANNEL. PLACE THE GROUND USING STAPLES OR PINS IN A 3 FOOT CENTER—TO—CENTER PATTERN. LESS FREQUENT STAPLING/PINNING IS
END OF THE FIRST RECP IN THE TERMINAL TRENCH AND PIN IT AT 1 FOOT INTERVALS ALONG THE BOTTOM OF THE TRENCH. ACCEPTABLE ON MODERATE SLOPES. DIMENSIONS
THE RECP SHOULD BE PLACED UPSIDE DOWN IN THE TRENCH WITH THE ROLL ON THE DOWNSTREAM SIDE OF THE BENCH. 4. FOR ANCHORING DEVICES, 11 GAUGE, AT LEAST 6 INCHES LENGTH BY 1 INCH WIDTH STAPLES OR 12 INCH MINIMUM LENGTH NOTES:
ONCE PINNED AND BACKFILLED, THE RECP IS DEPLOYED BY WRAPPING OVER THE TROP OF THE TRENCH AND UNROLLING WOODEN STAKES AREA RECOMMENDED FOR ANCHORING THE RECP TO THE GROUND. DRIVE STAPLES OR PINS SO THAT THE
UPSTREAM. IF THE CHANNEL IS WIDER THAN THE PROVIDED ROLLS, PLACE ENDS OF ADJACENT ROLLS IN THE TERMINAL TOP OF THE STAPLE OR PIN IS FLUSH WITH THE GROUND SURFACE. ANCHOR EACH RECP EVERY 3 FEET ALONG ITS CENTER. 1, ALL CHANNEL WORK INVOLVING EXCAVATION SHALL BE PERFORMED IN DRY CONDITIONS OR IN CHANNEL SECTIONS ISOLATED BY
TRENCH, OVERLAPPING THE ADJACENT ROLLS A MINIMUM OF 3 INCHES. PIN AT 1 FOOT INTERVALS, BACKFILL, AND COMPACT. LONGITUDINAL OVERLAPS MUST BE SUFFICIENT TO ACCOMMODATE A ROW OF ANCHORS AND UNIFORM ALONG THE ENTIRE
UNROLL THE RECP IN THE UPSTREAM DIRECTION UNTIL REACHING THE FIRST INTERMITTENT TRENCH. FOLD THE RECP BACK LENGTH OF OVERLAP AND ANCHORED EVERY 3 FEET ALONG THE OVERLAP LENGTH. ROLL ENDS MAY BE SPLICED BY IMPERVIOUS DIKES AND KEPT DE-WATERED.
OVER ITSELF, POSITIONING THE ROLL ON THE DOWNSTREAM SIDE OF THE TRENCH, AND ALLOWING THE MAT TO CONFORM TO OVERLAPPING 1 FOOT (IN THE DIRECTION OF WATER FLOW), WITH THE UPSTREAM/UPSLOPE MAT PLACED ON TOP OF THE
THE TRENCH. THEN PIN THE RECP (TWO LAYERS) TO THE BOTTOM OF THE TRENCH, BACKFILL, AND COMPACT. CONTINUE UP DOWNSTREAM/DOWNSLOPE RECP. THIS OVERLAP SHOULD BE ANCHORED AT 1 FOOT SPACING ACROSS THE RECP. WHEN 2. THE CONTRACTOR SHALL NOT DISTURB MORE AREA THAN CAN BE STABILIZED THE SAME WORKING DAY.
THE CHANNEL (WRAPPING OVER THE TOP OF THE INTERMITTENT TRENCH) REPEATING THIS STEP AT OTHER INTERMITTENT INSTALLING MULTIPLE WIDTH MATS HEAT SEAMED IN THE FACTORY, ALL FACTORY SEAMS AND FIELD OVERLAPS SHOULD BE
TRENCHES, UNTIL REACHING THE UPPER TERMINAL TRENCH. AT THE UPPER TERMINAL TRENCH, ALLOW THE RECP TO CONFORM SIMILARLY ANCHORED.TO THE TRENCH, SECURE WITH PINS OR STAPLES, BACKFILL, COMPACT, AND THEN BRING THE MAT BACK OVER THE TOP OF 3. PUMP-AROUND PUMP AND HOSE SHALL ADEQUATELY CONVEY BASEFLOW. DE-WATERING PUMP SHALL ADEQUATELY DE-WATER THE
THE TRENCH AND ONTO THE EXISTING MAT (2 TO 3 FEET OVERLAP IN THE DOWNSTREAM DIRECTION), AND PIN AT 1 FOOT WORKING AREA AT THE DOWNSTREAM IMPERVIOUS DIKE.
INTERVALS ACROSS THE RECP. WHEN STARTING INSTALLATION OF A NEW ROLL, BEGIN IN A TRENCH OR SHINGLE—LAP ENDS OF RECP MAINTENANCE NOTES
ROLLS A MINIMUM OF 1 FOOT WITH UPSTREAM RECP ON TOP TO PREVENT UPLIFTING. PLACE THE OUTSIDE EDGES OF THE 4. GRAVITY-BASED GEOTEXTILE BAG FILTERS SHALL BE USED TO COLLECT SILT AND SEDIMENT FROM WORK AREA DEWATERING.
RECP(S) IN LONGITUDINAL TRENCHES, PIN, BACKFILL, AND COMPACT. 1. INSPECT RECP AT LEAST WEEKLY AND AFTER EACH SIGNIFICANT (1/2 INCH OR GREATER) RAINFALL EVENT REPAIR IMMEDIATELY.
4. FOR ANCHORING DEVICES, 11 GAUGE, AT LEAST 6 INCHES LENGTH BY 1 INCH WIDTH STAPLES OR 12 INCH MINIMUM LENGTH 2. GOOD CONTACT WITH THE GROUND MUST BE MAINTAINED, AND EROSION MUST NOT OCCUR BENEATH THE RECP. 5. EFFLUENT FROM CLEAN WATER PUMP AROUND MAY BE DISCHARGED DIRECTLY INTO STABILIZED OUTLET (NO SEDIMENT REMOVAL
WOODEN STAKES AREA RECOMMENDED FOR ANCHORING THE RECP TO THE GROUND. DRIVE STAPLES OR PINS SO THAT THE 3. ANY AREAS OF THE RECP THAT ARE DAMAGED OR NOT IN CLOSE CONTACT WITH THE GROUND SHALL BE REPAIRED AND DEVICE REQUIRED).
TOP OF THE STAPLE OR PIN IS FLUSH WITH THE GROUND SURFACE. ANCHOR EACH RECP EVERY 3 FEET ALONG ITS CENTER. STAPLED.
LONGITUDINAL OVERLAPS MUST BE SUFFICIENT TO ACCOMMODATE A ROW OF ANCHORS AND UNIFORM ALONG THE ENTIRE
LENGTH OF OVERLAP AND ANCHORED EVERY 3 FEET ALONG THE OVERLAP LENGTH. ROLL ENDS MAY BE SPLICED BY 4. IF EROSION OCCURS DUE TO POORLY CONTROLLED DRAINAGE, THE PROBLEM SHALL BE FIXED AND THE ERODED AREA 6. FILTER FABRIC SHALL BE USED UNDERNEATH ALL STONE/RIP RAP PLACED FOR SEDIMENT BAGS, STABILIZED OUTLETS, SPLASH PADS.
OVERLAPPING 1 FOOT (IN THE DIRECTION OF WATER FLOW), WITH THE UPSTREAM/UPSLOPE MAT PLACED ON TOP OF THE PROTECTED.
DOWNSTREAM/DOWNSLOPE RECP. THIS OVERLAP SHOULD BE ANCHORED AT 1 FOOT SPACING ACROSS THE RECP. WHEN 5. MONITOR AND REPAIR THE RECP AS NECESSARY UNTIL GROUNDCOVER IS ESTABLISHED. 7. IMPERVIOUS DIKES SHALL BE CONSTRUCTED TO ISOLATE THE IN-STREAM WORKING AREA. AN IMPERVIOUS FABRIC MEMBRANE AND
INSTALLING MULTIPLE WIDTH MATS HEAT SEAMED IN THE FACTORY, ALL FACTORY SEAMS AND FIELD OVERLAPS SHOULD BE SAND BAGS OR STONE SHALL BE USED TO CREATE THE DIKES.
SIMILARLY ANCHORED.
8. THE WORK SEQUENCE IN PUMP-AROUND OPERATIONS PROCEEDS AS FOLLOWS:
RECP MAINTENANCE NOTES A
1. INSPECT RECP AT LEAST WEEKLY' AND AFTER EACH SIGNIFICANT (1/2 INCH OR GREATER) RAINFALL EVENT REPAIR IMMEDIATELY. A. INSTALL SEDIMENT REMOVAL DEVICE AND TEMPORARY STABILIZED OUTLETS AT THE DOWNSTREAM END OF WORKING AREA.
B. INSTALL PUMP-AROUND PUMP AND FLEXIBLE HOSE.
2. GOOD CONTACT WITH THE GROUND MUST BE MAINTAINED, AND EROSION MUST NOT OCCUR BENEATH THE RECP. C. INSTALL UPSTREAM IMPERVIOUS DIKE AND BEGIN PUMPING (CLEAN WATER) DOWNSTREAM TO STABILIZED OUTLET.
3. ANY AREAS OF THE RECP THAT ARE DAMAGED OR NOT IN CLOSE CONTACT WITH THE GROUND SHALL BE REPAIRED AND D. INSTALL DOWNSTREAM IMPERVIOUS DIKE AND DE-WATERING PUMP.
STAPLED. E. PERFORM CHANNEL WORK IN ACCORDANCE WITH THE PLANS IN THE WORKING AREA.
4. IF EROSION OCCURS DUE TO POORLY CONTROLLED DRAINAGE, THE PROBLEM SHALL BE FIXED AND THE ERODED AREA F. DE-WATER THE WORKING AREA (AS NEEDED) INTO THE SEDIMENT REMOVAL DEVICE AND TEMPORARY STABILIZED OUTLET.
PROTECTED. G. UPON COMPLETION OF WORK, REMOVE ANY SEDIMENT ACCUMULATION BEHIND IMPERVIOUS DIKES.
5. MONITOR AND REPAIR THE RECP AS NECESSARY UNTIL GROUNDCOVER IS ESTABLISHED. H. REMOVE DOWNSTREAM AND THEN UPSTREAM DIKES AND ALL PUMPS AND HOSE.
I. SEED AND MULCH ALL DISTURBED AREAS PER THE PLANTING PLAN.
MATTING - CHANNEL INSTALLATION MATTING - SLOPE INSTALLATION PUMP AROUND DIVERSION / DEWATERING DETAIL
NOT TO SCALE NOT TO SCALE NOT TO SCALE
PROJECT MANAGER V. HAYNES, PE
PIEDMONT LITHIUM CAROLINAS INC.
'�N •�ARO�� EROSION CONTROL DETAILS
=o¢ FESS,o�9•;7 CAROLINA LITHIUM PROJECT
Q s AL
5 3/13/2024 REVISED PER DEMLR COMMENTS = =_
4 1/23/2023 REVISED PER DEMLR COMMENTS •s 3 LITHIUM HYDROXIDE CONVERSION PLANT
PIE ONT 3 5/31/2022 REVISED PER DEMLR COMMENTS �t!�•IN ``� GASTON COUNTY NORTH CAROLINA SHEET
HDR Engineering Inc.of the Carolinas 2 12/08/2021 REVISED PER DEMLR COMMENTS °O' /E K. NP��� 3/13/2024 ' FILENAME - OOG-012
440 S.Church Street, Suite 1200
1 8/27/2021 MINING PERMIT ��uun►►��
Chartotte,NC 28202-
704.338.6700 2075 ISSUE DATE DESCRIPTION PROJECT NUMBER 10302238 SCALE - N.T.S. OOG-012
N.C.B.E.L.S.License Number:F-0116