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Home My WebLink AboutNCG020896_Site Map_20210716CONSTRUCTION SEQUENCE MINING ACTIVITY PHASE 1 1. PRIOR TO COMMENCEMENT OF CONSTRUCTION ACTIVITIES CONTACT NCDEQ LAND QUALITY SECTION (919) 7914200. 2. INSTALL CONSTRUCTION ENTRANCE ON OLD HWY 421 PER PLAN, 3. INSTALL SILT FENCE ALONG ACCESS ROAD PER PLAN WITH SILT FENCE OUTLETS. INSTALL BRIDGE FOR SITE ACCESS. 4. INSTALL PERMANENT DIVERSIONS #10, 11, 12, 13. STABILIZE AND SEED ALL SLOPES IMMEDIATELY. ONLY CLEAR AS NECESSARY TO INSTALL DIVERSIONS. MAINTAIN SILT FENCE AND SILT FENCE OUTLETS DOWN STREAM UNTIL TEMPORARY/PERMANENT LINING, AND GOOD GROUND COVER ON FILL SLOPES IS ESTABLISHED S. INSTALL SILT FENCE PER PLAN BELOW ALL PERMANENT/TEMPORARY DIVERSIONS AND BASIN/TRAPS W/ SILT FENCE OUTLETS IN LOW AREAS PER PLAN. 6. INSTALL SKIMMER BASIN #1, 2, 3, 4, S. STABILIZE AND SEED ALL SLOPES IMMEDIATELY, ONLY CLEAR AS NECESSARY TO INSTALL BASINS. MAINTAIN SILT FENCE AND SILT FENCE OUTLETS DOWN STREAM UNTIL GOOD GROUND COVER IS ESTABLISHED 7. INSTALL TEMPORARY DIVERSIONS # 1,2,3,45,6,7,8, 9 PER PLAN. STABILIZE AND SEED ALL SLOPES IMMEDIATELY. ONLY CLEAR AS NECESSARY TO INSTALL DIVERSIONS. MAINTAIN SILT FENCE AND SILT FENCE OUTLETS DOWN STREAM UNTIL TEMPORARY/PERMANENT LINING, AND GOOD GROUND COVER ON FILL SLOPES IS ESTABLISHED. S. BEGIN CLEARING NECESSARY AREAS TO INSTALL PLANT SITE AND BEGIN REMOVAL OF OVERBURDEN FROM PIT FOR FILL MATERIAL. ONCE FINISH GRADE IS MET ON THE PLANT SITE REMOVE TO # 7 AND INSTALL PD#7.MAINTAIN SILT FENCE AND SILT FENCE OUTLETS DOWN STREAM UNTIL TEMPORARY/PERMANENT LINING, AND GOOD GROUND COVER ON FILL SLOPES IS ESTABLISHED. S. MAINTAIN ALL EROSION CONTROL MEASURES WEEKLY AND AFTER ANY STORM EVENTS. 10. ONCE PLANT SITE, SITE ACCESS ROAD (PERMANENT DIVERSIONS CONSTRUCTED), PIT HAUL ROAD AND SCALE HOUSE SITE GRADES ARE MET AND ALL SLOPES STABILIZED AND SEEDED. BEGIN CONSTRUCT ING BERMS PER PLAN. MAINTAIN ALL DOWNSTREAM DIVERSIONS AND SILT FENCE UNTIL GOOD GROUND COVER 16 ESTABLISHED. 11. ONCE BERMS ARE COMPLETE AROUND PLANT SITE STABILIZE AND SEED. MAINTAIN SILT FENCE UNTIL THIS ACHIEVED. REMOVE TEMPORARY DIVERSIONS # 8,9 AND TEMPORARY SKIMMER BASIN #1. MAINTAIN ALL DOWNSTREAM DIVERSIONS AND SILT FENCE UNTIL GOOD GROUND COVER IS ESTABLISHED. 12. ONCE PLANT SITE AND BERMS ARE CONSTRUCTED BEGIN PLACING OVERBURDEN IN THE OVERBURDEN AREA. MAINTAIN ALL EROSION CONTROL MEASURES WEEKLY AND AFTER ANY STORM EVENTS UNTIL FINAL MAX FILL 13 MET. STABILIZE AND SEED ALL SLOPES AND DENUDED AREAS. 13. ONCE GOOD GROUND COVER IS ESTABLISHED AND NO RUTTING OF SLOPES IS OCCURRING REMOVE ALL EROSION CONTROL MEASURES WHILE MAINTAINING SILT FENCE ON DOWNSTREAM SIDE. 14. DEWATER ALL SKIMMER BASINS AND SEDIMENT TRAPS WITH SILT BAG PER DETAIL. 15. MAINTAIN SILT FENCE AFTER MAJOR RAIN EVENTS. 16. STABILIZE AND SEED ALL DENUDED AREAS IN WHICH WORK WILL NOT RECCMMENCE WITHIN 7 WORKING DAYS OR 14 CALENDAR DAYS. 17. CALL NCDEQ LAND QUALITY SECTION FOR INSPECTION (919) 7914200. PHASE2 1. BEGIN MINING ACTIVITIES. 2. TEMPORARY SEED OVERBURDEN AREAS THAT WILL BE DENUDED FOR 30 DAYS OR MORE. 3. MAINTAIN ALL EROSION CONTROL DEVICES WEEKLY AND AFTER MAJOR STORM EVENTS. 4. CALL NCDEQ LAND QUALITY SECTION FOR INSPECTION (919) 791.4200. 1. ALL DENUDED AREAS LEFT INACTIVE B€TWEEN PERIODS OF GRADING ACTIVITY SHALL BE TEMPORARILY SEEDED `NTH IN IS WRKINGS DAYS OR 30 CALENDAR DAYS SHICHEVER IS SHORTER. SEE SEEDING SCHEDULE IN DETAILS, Z. OVERBURDEN FILE TO CONSTRUCTED AND STABILIZED FROM FINAL LIFT ISREACHED BOTTOM PER ABOVEBOVE DETAIL FILLED.ESSHALL BE THE LEVIER SLOPES AND BENCHES SHALL BE COMPLETED (MEETING THE RECLAMATION PLAN). 3. FOR FINAL STABILIZATION OF FILL SLOP€S, GRADE TO 3'1 SLOPE, COVER V4THTOPSOIL, SEEDANDMULCH. WASTE PILE RECLAMATION (TYP) NTS EROSION CONTROL LEGEND TOP OF B SEDIMENT BASIN WIER BAFFLES ROCK CHECK DAMS - SILT FENCE SF TEMPORARY DIVERSION DITCH D OUTLET PROTECTION J-HOOK W/ SILT FENCE OUTLET SILT FENCE OUTLET DISTURBED AREAS TAILINGS/SEDIMENT PONDS 2.6 AC STOCKPILES 3.5 AC OVERBURDEN STOCKPILE 26.5 AC PROCESSING AREA/HAUL ROADS 4.9 AC MINE EXCAVATION 20.0 AC OTHER MISC EXCAVATION 9.7 AC (BERMS, DIVERSIONS, ETC.) TOTAL AFFECTED AREA 67.2 AC 0 LEGEND ACTIVE PERMIT BOUNDARY EXISTING CONTOUR - - - EXISTING BUFFER 0 + AFFECTED AREA 10110 0010 SEEN BEEN CREEK BERM 0 POND 1`��\\V��1�I�1��V\ N INN SKIMMERFOR BASIN #1 TOP DIM= 74 x 148 \ \ OTTOM DE TH 130 �\ \ \\\ 1 \ i.�� \\\ ��N�S/� / /� - ! �` \ I / // / \\\ \✓ / _� /// 1 ` \ \�'= \ \ POOL DEPTH 15.0 ` \ TOP EL= 415.0 \�430 �� \ BOTTOM EL= 410.0) \\\\\ 1 WEIR EL=413.0 \\\ t � �\\\` VOL PROPOSED= 27348 CF �\ \\\ \\\\ \ -\ \ ��` Q/j �LT FENCE OUTLET (TYP \\\ VOL REQUIRED-IR L=20.0 - J / \� / WEIRD=2.0'_- / WEIR LINING=CLASS A RIP RAP ---. \ \ \�\� ,III (\ \ 1, / / `. /; / / I (J I II III I \ \�\\ • aq5 / I I I -'\ 11 1 I I \ \ `\ WEIR STONE D=1.0 / EMERGENCY SPILLWAY W , v. \\ Z CONSTRUCT NATURAL GROUND\�\-+_ + SKIMMER SIZE=6' 4 _ SKIMMER ORFICE=2.6" I �I 4- I11 (rr _ BAFFLES= 3 J I \\ \ d.l l \ j+ \ \ \\\\�� - + 10 LET PROTECTION v, SILT FENCE OUTLET (TY ,LP, \ \ \. .`� - _ 430 / 'I _ DIVERSION IN _r / \� TO #9 \`\ \ -? O + I / / / ) 2p✓ III �r \\\\ \ �I .[// �� La=12.0' /N• ` _/,✓�i Fi aM / / / ! \ + \ W=6.0'.�/ y v O P / ( +! % v STONE O=CLASS A RIP RAP / ij 0 CHECK DAM (TYP) �� _ -�I l( °'�' A° l 1 i' ; 10-YR PIT ' / ++ I I i �j �j} FUTURE -�// Y L - \ I 1 +4 I f `-_��_ =_� J ( / `3 C T / (I / / OVERBURDEN AREA ; -z 415- 20. Alm I ' I -_ - / (I� I p �+ /TD#8/ ++�� ( 111�`�I=/ �f I 8.8 AC +�- /-425 /j 1- J _/ / / / + PERMANENT �1-� 422 / ti.. / +"+ SKIMMER BASIN #2 _ TD #7 ,4l/ ��1 �� / +� - �/ Q �+ + BASIN LINING =CLASS A RIP RAP ... / /�/ I PIT EXPANSION TOP DIM= 79 x 158 ++ \ + /� `�,. + - / �'. �42D + / � 430�! / AREA I� BOTTOM DIM= T x 122 ,+1 L O v / POOL DEPTH=6.0 '� �� / + �,✓7 � �o �� I I / � I•� n�� TOP EL= 442.014.8 AC BOTTOM EL= 434.0 - - // i WEIR EL=440.0 PLANT SITE VOL PROPOSED= 53184 OF OVERSIZED FOR PLANT OPERATIONS - PD #77.9 AC VOL REQUIRED= 12350 CF WEIR L=20.0 + WEIR D=2.0';� �+ - WEIR LINING=CLASS A RIP RAP WEIR STONE D=1.0"� EMERGENCY SPILLWAY + CONSTRUCT NATURAL GROUND (y \! + + - % - + y + + + + + + + + + + + + + . SKIMMER SIZE= 6'T + + + +_- _ - TD #6 + + + + +r + e. + + + 5 SKIMMER ORFICE=3.+ � BAFFLES=3+ �/- / OVERBURDEN AREA ; 42 DIVERSION INLET PROTECTIONLa=1+ - \ ! I I I y N• r y.I \ m w •i �� > •.^ +' + + _ CHECK DAM(TYP) W9D ; �� +++ + �.�/� 26.5 AC STONE O=CLASS A RIP RAP. D=1.0 TO #3 SILT FENCE OUTLET P o _ --W y r- (I / HIGG� DINT ! % /i _CHECK AM ( 4 P \\ \� �w � y �; - N• \°�` ia�°'ems' \ 415 TO I� I i 410 \ W y IS \ SILT FENCE OUTLET (TYP �- TEMPORARY , SKIMMER BASIN #3 TOP DIM= 71 x 142 V� TEMPORARY BOTTOM DIM= 53 x 124 -�\\ SKIMMER BASIN #4 W/RISER _ ' ( ///�� / ✓ POOL DEPTH=3.0' \\\ TOP DIM 93 x 186 TOP EL= 409.0 \ \ j BOTTOM DIM= 75 x 168 / 'W425 '"'". '� �' m 'i<O %//'BOTTOM EL=404.0 1�\\\POOL DEPTH=3.0' ��\\� TEMPORARY ,/ G \ 1 TOP EL= 410.5 / I �, SKIMMER BASIN #5 W/ RISER / 1 f ' / WEIR EL=407.0- IIII ` �' ( Y / / TOP DIM=83x 168 l I (BOTTOM EL=404.0 I�1 SILT FENCE OUTLET TYP f / i, / VOL PROPOSED=24981 OF � PRINCIPAL SPILLWAY EL=407.0 \ I I`�•• \� /BOTTOM DIM=65 x148 VOL REQUIRED= 20520 CF / +�� W4IRL=20.0' WEIR EL=408.5 �x� I POOL DEPTH=3.0' TOP EL=408.5 \ \ VOL PROPOSED= 44847 OF \ \ I BOTTOM EL= 402.0 bghl �\ 'F y '.,�\Y WEIR D= 2.0 VOL REQUIRED= 35100 OF - \ \ \ \ PRINCIPAL SPILLWAY EL= 405.0 \ \ WEIR LINING=CLASS A RIP RAP .vV. - A WEIRL=120' �� \ I �w �\ WEIR STONE D=1.0' -� _ / WEIR EL= 406.5 l (I _, W / ii 150 F T CONSTRUCTION ENTRANCE EMERGENCY SPILLWAY -WEIR D=2 0 \\ \ f 420 - - WEIR LININGxLASS A RIP RAP VOL PROPOSED=35097 OF V / .CONSTRUCT NATURAL GROUND, _ WEIR STONE D=9" SKIMMERSIZE=6" - I� 1 VOL REQUIRED=27720 OF _ SKIMMER SIZE=6' , I 1 WEIR L= 10.0' \ - SKIMMER ORFICE=2.5" I `1 I / WEIR D=20' BAFFLES= 3 ~ SKIMMER IE = 30" =35' / 1 I I / / , \\ , r �-- RISER SIZE = 30' CMP \ �\ \ ( ,/ /WEIR LINING=CLASS A RIP RAP J fj� DIVERSION INLET PROTECTION J // /' WEIR STONE D=9" 1 W + •� •� I �' 1 -J La=12.0' ` BARREL SIZE=24 CMP �� \\�I I // / Wa9,0• \ CONCRETE BASE= 4.0' x 4.0' x 1.0' \ I / �/ //� SKIMMER SIZE= 8" I 1 1 BAFFLES= 3 \1,1,/ / SKIMMER ORFICE=3.03.5 STONE O=CLASS A RIP RAP ,DIVERSION INLET PROTECTION I RISER SIZE = 30" CMP ( + m \ I �1 /��/��BARREL SIZE=24'CMP •� �/ I W=9.9 / CONCRETE BASE= 4.0' x 4.0' x 1.0' \ 11 J // BAFFLES=3 STONE O=CLASS A RIP RAP I / > D=1.0' \ DIVERSION INLET PROTECTION_ ' La=12.0 \ \\Q1'I',\� W=9.0 \ \ �` •� ( \ / /( 1 1 I \ \\_ _ \\ 1 \ \ \\ \\ 1 STONE O=CLASS A RIP RAP l \ I. ACCTIV ;P,ERMIT/PROPtRTY BOUNDARY Aww PROPOSED DIVERSION TABLE CHANNELID CHANNELSLOPE SIDE SLOPES CHANNEL DEPTH TEMPORARYLINING PERMANENTLINING LINING DEPTH TO#1 5.0 % 3:1 2.0 FT CLASS A RIP RAP CLASS A RIP RAP 1.0 FT TD#2 2.5 % 3:1 2.0 FT STRAW W! NETTING BERMUDAGRASS - TD#3 3.5 % 3:1 2.0 FT STRAW W/ NETTING BERMUDAGRASS - TD#4 0.4 % 3:1 2.5 FT STRAWW/NETTING BERMUDAGRASS - TD#5 0.5 % 3:1 2.5 FT STRAW W/ NETTING BERMUDAGRASS - TONS 2.5 % 3:1 2.0 FT STRAW W/ NETTING BERMUDAGRASS - TD#7 0.3 % 3:1 2.0 FT STRAWW/NETTING BERMUDAGRASS - TD#8 4.0 % 3:1 2.0 FT CLASS A RIP RAP CLASS A RIP RAP 1.0 FT TD#9 0.9 % 3:1 2.0 FT STRAWW/NETTING BERMUDAGRASS - TD#14 0.5 % 3:1 2.0 FT CLASS A RIP RAP CLASS A RIP RAP 1.0 FT 'RAFTING USERVICES, AND DESIGN INC. 346 WOOLARD ROAD Sanford, North Carolina 27330 (919)499-8759 phone draftinganddesign@yniaii.com 6 pEGP1iY91011 q L I �DpigACipR PATTERSON EXPLORATION SERVICES P.O. BOX 3008 SANFORD, INC 27331-3008 Z O V a H 19 TEE Z Q aZ 4 0 33 /ci n M W z OIHa G G.� -j I. p oa W MQ W REVISIONS AGENCY REVIEW ONLY NOT FOR CONSTRUCTION Scale: Drawn by: 1 "=200' DRAFTING AND DESIGN SERVICES, INC. Sheet: Designed by: DRAFTING AND DESIGN SERVICES, INC. Reviewed by: C4 of 15 PATTERSON EXPLORATION SERVICES Project Number: Date: DDS JOB #: 2016-12 PXS JOB #: JAN 2016