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Home My WebLink About_Cliffside Unit 5 CBE - Appendix D_20200107Duke Energy Coal Combustion Residuals Management Program December 18, 2019 Cliffside Steam Station— Inactive Unit 5 Ash Basin CAMA Closure Plan (Closure by Excavation) Revision 0 Wood E&IS Project No. 7812190194 APPENDIX D: INACTIVE UNIT 5 ASH BASIN CLOSURE PLAN DRAWINGS LIST OF DRAWINGS • CLS_C9XX.OXX.001 -COVER SHEET • CLS_C9XX.OXX.002 - GENERAL NOTES • CLS_C9XX.OXX.003 - EXISTING CONDITIONS PLAN WITH AERIAL PHOTOGRAPH • CLS_C9XX.OXX.004 - EXISTING CONDITIONS PLAN • CLS_C9XX.OXX.005 - EXISTING GROUNDWATER CONTOUR MAP • CLS_C9XX.OXX.006 - ESTIMATED BOTTOM OF ASH CONTOUR MAP • CLS_C9XX.OXX.007 - DEMO PLAN • CLS_C9XX.OXX.008 - EXCAVATION PLAN • CLS_C9XX.OXX.009 - EXCAVATION PLAN PROFILES • CLS_C9XX.OXX.010 - FINAL GRADES • CLS_C9XX.OXX.011 - FINAL GRADES - PROFILES • CLS_C9XX.OXX.012 - MAIN DAM INITIAL CONDITIONS • CLS_C9XX.OXX.013 - MAIN DAM FINAL CONDITIONS • CLS_C9XX.OXX.014 - CLOSURE DETAILS 1 • CLS C9XX.0XX.015 - CLOSURE DETAILS 2 wood. 3 4 5 6 7 8 I .001 REV .____ F DUKE ENERGY ROGERS ENERGY COMPLEX= CLIFFSIDE STEAM STAT COAL COMBUSTION RESIDUALS SURFACE IMPOUNDMENT CLOSURE PLAN INACTIVE UNIT 5 ASH BASIN CLEVELAND AND RUTHERFORD COUNTIES. NORTH CAROLINA Soo It All' Old Calvary Church Rd / / of 683R 9- 9 �5 / / p end / 947R F.ow 857R % 1 / ti O,assy Ln han r/Q eya O/= J00 b00fl Cameo Dr r2 0 / Chc>tmr"yd R0 / e° 1 A& 40 0 .� BROAD RIVER INACTIVE UNIT 5 RrnaARlnr, low \ / t SITE 1 t ACTIVE ASH BASIN 897 R 879lf — 0 1 1 r I 1 1 1 r I ' MoslEWer Rd 1 1 889 R I 1 SITE LOCATION MAP 0 2000 4000 6000 GRAPHIC SCALE (IN FEET) �r y�o QaJ o" Q .858 R V,�r, a000 i)t � r MAIN DAM N 573 DUKE POWER ROAD MOORESBORO, NORTH CAROLINA 28114 STATE ID: RUTHE-070, SADDLE DAM STATE ID: RUTHE-072 nprpruppr? iponia Sheet List Table Sheet Number Sheet Title .001 COVER SHEET .002 GENERAL NOTES .003 EXISTING CONDITIONS PLAN WITH AERIAL PHOTOGRAPH .004 EXISTING CONDITIONS PLAN .005 EXISTING GROUNDWATER CONTOUR MAP .006 ESTIMATED BOTTOM OF ASH CONTOURS .007 DEMOLITION PLAN .008 EXCAVATION PLAN .009 EXCAVATION PLAN PROFILES .010 FINAL GRADES .011 FINAL GRADES -PROFILES .012 MAIN DAM INITAL CONDITIONS .013 MAIN DAM FINAL CONDITIONS .014 DETAILS 1 .015 DETAILS 2 ION a jr� ✓ �� -.rw�' `..: .y .. ra "'�F. ,•�' - � Y+' ;.n X,�'� t,�'�y-n �� rs _rrf s ;`� t �''rr . t M1, .,`®7°iNrta a•� 'lF - ''ram wt le'�P'iY 4 z.'? �!' 3, % '.. � �. ♦' Ike .x� ''., �.,�'� v �' -:43,• BROAD RIVER,.,^ INACTIVE UNIT 5 ASH BASIN' ACTIVE ASH BASIN �`W \ vrt 3 R'`'1 e N LAT: N 35.210 SITE OVERVIEW MAP LONG: W-81.760 0 800 1600 2400 PREPARED FOR: PREPARED BY: DUKE ENERGY (OWNER) WOOD ENVIRONMENT & GRAPHIC SCALE (IN FEET) NOT FOR CONSTRUCTION 400 SOUTH TRYON ST. INFRASTRUCTURE SOLUTIONS, INC. CHARLOTTE, NC 28202 JOSHUA M. BELL, P.E. 2801 YORKMONT ROAD, SUITE 100 TIT KACTIVE UNIT 5 ASH BASIN COAL COMBUSTION RESIDUALS SURFACE IMPOUNDMENT CLOSURE PLAN CHARLOTTE, NC 28208 wood PHONE: (704)-357-8600 ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION Wood Environment & COVER SHEET Infrastructure Solutions, Inc. 2801 YORKMONT ROAD, SUITE 100 CHARLOTTE, NC 28208 FOR TEL: (704) 357-8600 FAX: (704) 357-8638 LICENSURE: NC ENG: F-1253 NC GEOLOGY: C-247 ISSUED FOR REVIEW SEAL UKE SCALE: AS SHOWN DES: VMO DWG TYPE: DWG DFTR: VMO/ANI NOT FOR ENERI DATE JOBODECEMBER 18, 2019 ENGR: JBD CONSTRUCTION FILENAME: .001 COVER SHEET.dwg APPD: JB DWG SIZE DRAWING NO. REVISION ANSI D 22"x34" CLS C9XX OXX 001 ---- A--� 0 0 F--� INCHES 1 2 3 TENTHS 10 20 1 30 REV DATE JOB NO. PROJECT TYPE DES DFTR CHKD ENGR DESCRIPTION — 6 7 8 9 10 Plotted By: Bell, Josh Sheet Set: 7812190194 — Unit 5 Inactive Ash Basin Layout:.001 COVER SHEET December 18, 2019 09: 22: 39pm Q:\Duke\CIiffSide\7812190194 — Cliffside Closure Plan\Plansheets\Unit 5 Inactive Ash Basin\.001 COVER SHEET.dwg 2 3 4 5 6 7 8 I .002 GENERALNOTES SURVEYLEGEND REV .____ 1. PURPOSE 1.1. THIS CLOSURE PLAN HAS BEEN DEVELOPED TO MEET THE REQUIREMENTS FOR WRITTEN CLOSURE PLANS FOR COAL COMBUSTION RESIDUALS (CCR) SURFACE IMPOUNDMENTS AS PRESENTED IN BOTH THE FEDERAL CCR RULE (40 CODE OF FEDERAL REGULATIONS (Cl 257.102(B)(1-VI) AND NORTH CAROLINA'S COAL ASH MANAGEMENT ACT (CAMA, SECTION 130A-309.212(A)(4). THIS CLOSURE PLAN HAS BEEN PREPARED FOR THE REVIEW AND APPROVAL OF THE NORTH CAROLINA DEPARTMENT OF ENVIRONMENTAL QUALITY (NCDEQ). 1.2. THIS PLAN PRESENTS A CLOSURE -BY -EXCAVATION OPTION, AND DUKE ENERGY IS CONCURRENTLY PURSUING CLOSURE -IN -PLACE IS AN ACCEPTABLE OPTION AS WELL. 2. PRELIMINARY CONSTRUCTION SEQUENCE: 2.1. INSTALL STORMWATER RUN-ON PREVENTION CONTROLS, TO MINIMIZE STORMWATER FLOW INTO THE ASH BASIN AS MUCH AS POSSIBLE. A 2.2. DEWATER BY PUMPING TO EXISTING WASTEWATER TREATMENT SYSTEM DISCHARGING TO EXISTING NPDES-PERMITTED OUTFALL. 2.3. OPERATE WASTEWATER TREATMENT SYSTEM TO MANAGE INTERSTITIAL / DEWATERING WATERS AND CONTACT STORMWATERS DURING CONSTRUCTION. 2.4. DEWATER AND EXCAVATE THE CCR MATERIAL WITHIN THE CLOSURE -BY -REMOVAL AREAS PLACING EXCAVATED CCR MATERIAL WITHIN THE DRYING AREAS FOR ULTIMATE DISPOSITION INTO THE ROGERS CCP LANDFILL AREA. 2.5. DEWATER THE CCR MATERIAL AS NECESSARY WITHIN THE BASIN AREA TO ALLOW FOR TRANSPORT AND PLACEMENT IN THE LANDFILL. MIX WET ASH WITH DRIER MATERIAL AS NECESSARY. 2.7. CONSTRUCT HAUL / ACCESS ROADS AND PERMANENT STORMWATER CONVEYANCE MANAGEMENT IMPROVEMENTS. 2.8. UTILIZE SOILS FROM THE MAIN DAM REMOVAL AND THE OTHER IDENTIFIED ON -SITE BORROW AREAS. REMOVE THE SADDLE DAM. 2.9. RESTORE THE CLOSURE -BY -REMOVAL AREAS AND ANY ADDITIONAL AREAS DISTURBED DURING CLOSURE. 3. DATUM 3.1. ALL ELEVATIONS SHOWN IN THESE DRAWINGS ARE REFERENCED TO NORTH AMERICAN VERTICAL DATUM, 1988 (NAVD). 3.2. HORIZONTAL DATUM: NORTH AMERICAN DATUM, 1983 (NAD83). 4. REFERENCES B 4.1. ASH BASIN FACILITY BOUNDARIES PROVIDED BY DUKE ENERGY. 4.2. APPROXIMATE LIMITS OF CCR BOUNDARY EXTRACTED FROM BOTTOM OF ASH AUTOCAD CIVIL 3D SURFACE. 4.3. BOTTOM OF ASH CONTOURS TAKEN FROM AMEC FOSTER WHEELER, WASTE STRATEGY ANALYSIS, CLIFFSIDE STEAM STATION, APRIL 17, 2015. HISTORICAL INFORMATION BASED ON HORIZONTAL DATUM NAD27 WAS CONVERTED TO NAD83. HISTORICAL INFORMATION BASED ON VERTICAL DATUM NGVD29 WAS CONVERTED TO NAVD88 USING A CONVERSION OF -0.75 FT APPLIED SITE WIDE. 4.4. BORING LOCATIONS, PIEZOMETER LOCATIONS, AND SEEP LOCATIONS PROVIDED BY DUKE ENERGY.. 4.5. EXISTING TOPOGRAPHIC INFORMATION WAS PRODUCED FROM PHOTOGRAMMETRIC METHODS FROM AERIAL PHOTOGRAPHY OBTAINED ON JULY 31, 2015 BY WSP. 4.6. HIGH RESOLUTION AERIAL IMAGERY DATED DECEMBER 2011 WAS OBTAINED FROM WWW.ESRI.COM. 4.7. EXISTING GROUNDWATER CONTOURS PROVIDED BY SYNTERRA (2019). 5. NOTES 5.1. THE "APPROXIMATE LIMITS OF ASH BASIN FACILITY BOUNDARY" AND THE "APPROXIMATE LIMITS OF CCR BOUNDARY" ARE BASED ON AERIAL PHOTOGRAPHY, TOPOGRAPHIC MAPPING, AND OTHER HISTORICAL DRAWINGS AND INFORMATION AND SHOULD BE CONSIDERED APPROXIMATE. THE "APPROXIMATE LIMITS OF ASH BASIN FACILITY BOUNDARY" INCLUDES THE CONTAINMENT DAMS AND DIKES WHILE THE "APPROXIMATE LIMITS OF CCR BOUNDARY" EXCLUDES THOSE STRUCTURES AND IS BASED ON UPDATED TOPOGRAPHIC MAPPING, REPORTED OPERATIONAL LEVELS, AND SUBSURFACE DATA COLLECTED WITHIN THE BASIN. IT SHOULD BE NOTED THAT THE DETERMINATION OF THE ACTUAL LATERAL EXTENT OF THE CCR MATERIALS WILL TAKE PLACE PRIOR TO, Al DURING, IMPLEMENTATION. C 5.2. GROUNDWATER CONTOURS SHOWN IN PLANS ARE BASED ON MODELED EXISTING CONTOUR INFORMATION PROVIDED BY SYNTERRA (2019). BORING LEGEND BORING LOCATION SEEP LOCATION PIEZOMETER LOCATION MISC. BOUNDARY LEGEND — — — — — — — — — — — APPROXIMATE LIMITS OF ASH BASIN FACILITY BOUNDARY APPROXIMATE LIMITS OF CCR BOUNDARY /VV CONTOURLEGEND PROPOSED MAJOR CONTOUR (10') PROPOSED MINOR CONTOUR (2') EXISTING MAJOR GROUNDWATER CONTOUR (10') ESTIMATED MAJOR BOTTOM OF ASH CONTOUR (10') DETAIL IDENTIFYING NUMBER SHEET NUMBER OF DETAIL DETAIL REFERENCE CALLOUT — — PROPERTY BOUNDARY UTILITY EASEMENT X X FENCE -0- UTILITY POLE — — 100-YR FLOODPLAIN z POWER LINE TOWER STREAM ¢ LIGHTED UTILITY POLE A 700 EXISTING MAJOR CONTOUR (10') ® POWER MANHOLE EXISTING MINOR CONTOUR (2') OHE OVERHEAD ELECTRIC TREE LINE / VEGETATION LIE UE UNDERGROUND ELECTRIC Q SINGLE TREE WATER PIPE GUARD RAIL ® WATER MANHOLE PIPE H WATER VALVE — AGGREGATE ROAD [ WATER HYDRANT aTELEPHONE PEDESTAL FM SANITARY SEWER FORCE MAIN B O DRAINAGE STRUCTURE Q SANITARY SEWER MANHOLE CATCH BASIN G G NATURAL GAS PIPLINE WETLANDS EXISTING SURFACE IMPOUNDMENT DETAIL IDENTIFYING NUMBER DETAIL TITLE 2 TI /LE .080 SCALE SHEET NUMBER OF DETAIL DETAIL NUMBER AND TITLE CROSS-SECTION IDENTIFYING LETTER SHEET NUMBER OF CROSS-SECTION CROSS-SECTION REFERENCE CALLOUT 0 0 N TIT WAACTIVE UNIT 5 ASH BASIN COAL COMBUSTION RESIDUALS wood. SURFACE IMPOUNDMENT CLOSURE PLAN ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION F F Wood Environment & Infrastructure Solutions, Inc. GENERAL NOTES 2801 YORKMONT ROAD, SUITE 100 CHARLOTTE, NC 28208 FOR TEL: (704) 357-8600 FAX: (704) 357-8638 NOTE: NOT TO SCALE LICENSURE: NC ENG: F-1253 NC GEOLOGY: C-247 ISSUED FOR REVIEW SEAL SCALE: AS SHOWN DES: VMO DUKE DWG TYPE: DWG DFTR: VMO/ANE rl NOT FOR ENEK�'ft7Y® DATE:ODECEMBER 118, 2019 ENGR: JBD CONSTRUCTION FILENAME: .002 GENERAL NOTES AND SYMBOL SHEET.dwg APPD: JB DWG SIZE DRAWING NO. REVISION ANSI D 22"x34" C LS C9XX. OXX. 002 ---- REV DATE JOB NO. I PROJECT TYPE I DES DFTR CHKD ENGR DESCRIPTION I — INCHES 1 2 3 TENTHS 10 20 30 4 5 6 7 8 9 10 Plotted By: Bell, Josh Sheet Set: 7812190194 — Unit 5 Inactive Ash Basin Layout:.002 GENERAL NOTES AND SYMBOL SHEET December 18, 2019 09: 22: 52pm O:\Duke\CIiffSide\7812190194 — Cliffside Closure Plan\Plansheets\Unit 5 Inactive Ash Basin\.002 GENERAL NOTES AND SYMBOL SHEET.dwg 17- A 46L 'if& ■ -,?,AD l -01 AD2-01 $ AD2-04 AD$-AD2-03 MW-36BRU o MW-36S APPROXIMATE LIMITS OF ASH BASIN FACILITY BOUNDARY (TYP.) SEE NOTE 1 �CA-U5-02D G" CCF __G" �rU5-03SA U5-03D UNIT 5 INACTIVE / ASH BASIN CR-U5-01 D U5-02D U5-02S-SLA / `� U5-02BR 1 '-- U5-02S-SLE 1 1 U5-01 S GWA-01 BRU *U5-01 D SY-01 -Ii` AD3-01 AD3-02 OpO V3 MW-38S u/A * MW-38BR / BMW-38D + •S-17 - GWA-35D j -OGWA-35S *S-2 0 B-2 GWA 36D GWA-02BRA ' GWA-36S GWA-02BR GWA-68BRL V -02BRU GWA-02S �CLEVE-070 P102 r GWA 03D V6 BRL� �S 19A /�5 04S + S 1 30 / CCR- 5�16. U5 Q� 4.19� // B-8-/ CCR-U5-04BR '*--- U5-05D M IM-03S � �67BR-U5-05BR B-7 B-1 GWA-04S -U5-05D B-11) GWA-04D 5-0B-6CLEVE-070-P100 ` B-4 U4D -0 04BRA LCLEVE 070 P101 `B-9 CCR-U5-06S - #B-5 S-20 CCR-U5-06DA� lb U5-04S_j % U5-04BR B 14 CLEVE-072-P100 B 3 U5-l6S of -� U5-06,R - I-12 10-iiI U5-07SL GWA 316RA - R 1 �*44%�U5-07D f �GW - 1D ` - U5-07S I low Ile r ` CR- 5-08D +GWA-06D ` -CC-1_15-08S� 1 - GWA-05S _ 1 ti, GWA-05BRU 1 �B-15 -ii� CCR-U5-09S - A / y i �. ► .tmr. CCPMW-06D +CCPMW-06S CCR-CCP-11 BR CCR-CCP-10DA +CCR-CCP-10S "-CCR-CCP-10D U5-08D- CCR-U5-10D _ U5-08S Tj5 08BR CCR-U5-10S `iANA - GWA-30BR GWA-30S GWA-30BRU MW-30DA MW-lS MW-30D DUKE POWER RD. '— self _ r _ r -- /-- MW-42S MW-42D MW-42DA . o 7 ;6f SITE ENTRANCE 35°12'27.37" N, 81°45'44.75" W L t � CCR-13DS 3 CCR-IB-03S r GWA-10D- 'CCR-IB-03BR GWA-10S� �S-10 - lk - - C-4 ljo�B-07S leM IB-07D•5-11 C-5 GWA-11BR C-7 %GWgA�-11S 1BRU GWA--11 RU � GWA-11 BRL 02S-SLC 6 4k IB 06D 02AL -OIMW-25DR BROpp RIVER IB 4 IB-026RU -1 OS-13 l SIB-021 C_2� 1B-03S , S_6 - IB-03D+CCR-IB-01SMW20DR 20DR _ �C-3 CCR-IB-01D ��LD 04 � C -W>f04LP-02 _ GWA-29D WI21 BRU GWA-29BRA 0S 5 GWA-21S G A,21BRL GWA-29BR \D-6 AF SIB-04BR -AS 02D40•S 12 S-2``.00 � SE IB-04D -GWA-12S AS-02S GWA-14D tt GWA 28BR LIB-04S-SL GWA 12BRU AS 02BR D-4 GWA-14S AS GWA-28S $D-5 GWA-14'�GWA-14BR AS-08S � ♦� 08BR CLP-01 #AS 03BRU *GWA 2 B$ FjylA-64BRL AB-01D OS-9 CLMW-02 S 05S CCR-03BR D-2� AB-01BROR y GWA-38S ?MW-02D AS-09B -D-1 / #GWA-38D - MW-02DA-AS-08D AS-09DAS 05BRU D-3 �BMW 058 �/ AS-07I �` C 1 AS-07BRL - AS-07BR SAS 7BRA AS-07BRBOL ` 1 AS-07S -� W 1 1 G 3 WA G-54S LAS-07D AS-06S * GWA-54BR� AS-06D SAS-06BRA 44 AREA 1 ` (SEE NOTE 2) ri y � A-1 - AS-04S 0 _. i AS-04D b CCR 04D ,..�, � CLMW-03S GWA-62BR- _ #GWA-59BR CLMW-03D SAS-019B MW-10S GWA-59D ASH STORAGE *MW-10D ` GWA-62BRU AREA 2 :CCR-05D GWA-57BRU (SEE NOTE 3) GWA-57S '-ft ^ GWA-58BRU / , GWA-6 R GWA 3 BRA GWA-58S GWA-6 �R ? 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I / // /c/ / / X`X'�_ / \\ \\\\� \\\\ \ �° \ \ \ I / \\ f �)11 / I / 1 I // Will _ l CR P 1��7 /� �X\� —� \ \\ \ _ \ / / // /// J1 / I \` _ I \\\ \ \ 2801 YORKMONT ROAD, SUITE 100 / I / f // / / X \ \\\ / 1 \ \ \ \\f \ \ \ \ \ I / / // / / / �� (/ / / 1 / \ _ _ _ _ \ \\\\� \ CHARLOTTE, NC 28208 FOR \ s J 1 f \ \ \ \ \ \ \ \ --\ ( / �/ I / / I 1 \ TEL: (704) 357-8800 FAX: (704) 357-8638 II I / / / / V � / (� - \� - I 111I 1 \� \\ -\\f\ \ M �\ \ \ \ I / I I / �� \ l�� // // \ -1\�\ ��90',❑ \\� 1 / ( ) ( I I (� I \ \\\ \ \ \ \ \\ \� \ \ \ I \\ \\ \\ ,, / / / \\ _ __ _ _ \\\\\\ LICENSURE: NC ENG: F-1253 NC GEOLOGY: C-247 ISSUED FOR REVIEW 11 I I I I IIII I \ \ \ \ \ \\ / / I I ) �R-c �� \ \\ \ \ \\ J I \ \\ \ \ \ / �`� _ _ _ \�� SEAL � \ I 1 I \ \� NOTE: \ \ \ / I 1 / I\� 0/0 °yF � \\� \ \ \\ / I \ SCALE: AS SHOWN DES: VMO 1. THE "APPROXIMATE LIMITS OF ASH BASIN FACILITY BOUNDARY" AND THE "APPROXIMATE LIMITS OF CCR BOUNDARY" ARE BASED ON AERIAL PHOTOGRAPHY, / ❑� � i / 6 'k , \\ \ \ \ \ \ 0 D UKE DWG TYPE: DWG DFTR : VMO/ANE TOPOGRAPHIC MAPPING, AND OTHER HISTORICAL DRAWINGS AND INFORMATION AND SHOULD BE CONSIDERED APPROXIMATE. THE "APPROXIMATE LIMITS OF � � /� I \� \ \ \: - ASH BASIN FACILITY BOUNDARY" INCLUDES THE CONTAINMENT DAMS AND DIKES WHILE THE "APPROXIMATE LIMITS OF CCR BOUNDARY' EXCLUDES THOSE / 0 / 0\ \ \ /\ \ \ JOB NO: 7812-19-0194 CHI KRD STRUCTURES AND IS BASED ON UPDATED TOPOGRAPHIC MAPPING, REPORTED OPERATIONAL LEVELS, AND SUBSURFACE DATA COLLECTED WITHIN THE BASIN.\ IT SHOULD BE NOTED THAT THE DETERMINATION OF THE ACTUAL LATERAL EXTENT OF THE CCR MATERIALS WILL TAKE PLACE PRIOR TO AND/OR DURING �C % // 1 CR-C - D� \\ �� 1\ 0\ \❑ ENE �® DATE: DECEMBER 18, 2019 ENGR: JB -�� / -o 'i 108 \\.\� NOT FOR IMPLEMENTATION. — Q / \ I \__ q-- \ �f \ FILENAME: .005 EXISTING CONDITIONS-TOPOGRAPHIC.dwg APPD: JB ® ,,O/ ❑� \ I¢R - \�\ �\ \\ CONSTRUCTION REFERENCES: / /�j �/ / � �\ � � \ I 1 / O O \ \\ \ � O DWG SIZE DRAWING NO. REVISION 1. ASH BASIN FACILITY BOUNDARIES, BORING LOCATIONS, PIEZOMETER LOCATIONS, AND SEEP LOCATIONS PROVIDED BY DUKE ENERGY. \ \� \, 1 (I11(1 /) � �� \1 \� ANSI D 2. EXISTING TOPOGRAPHIC INFORMATION WAS PRODUCED FROM PHOTOGRAMMETRIC METHODS FROM AERIAL PHOTOGRAPHY OBTAINED ON JULY 31, 2015 BY C L S C 9XX . OXX . 0 04 ---- WSP. / \ � \ \I 1 \ \ \- � / / 0 22"x34" / \ / \ —REV DATE JOB NO. 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THE "APPROXIMATE LIMITS OF ASH BASIN FACILITY BOUNDARY' AND THE "APPROXIMATE LIMITS OF CCR BOUNDARY' ARE BASED ON AERIAL PHOTOGRAPHY, TOPOGRAPHIC MAPPING, \\\\ ` ' // III �/ / / / _ / _ _ — ' / / / LICENSURE: NC ENG F-1253 NC GEOLOGY: C-247 ISSUED FOR REVIEW AND OTHER HISTORICAL DRAWINGS AND INFORMATION AND SHOULD BE CONSIDERED APPROXIMATE. THE "APPROXIMATE LIMITS OF ASH BASIN FACILITY BOUNDARY' INCLUDES THE \ CONTAINMENT DAMS AND DIKES WHILE THE "APPROXIMATE LIMITS OF CCR BOUNDARY' EXCLUDES THOSE STRUCTURES AND IS BASED ON UPDATED TOPOGRAPHIC MAPPING, SEAL SCALE: AS SHOWN DES: VMO REPORTED OPERATIONAL LEVELS, AND SUBSURFACE DATA COLLECTED WITHIN THE BASIN. IT SHOULD BE NOTED THAT THE DETERMINATION OF THE ACTUAL LATERAL EXTENT OF \�\\ / / \ \ / DUKE DWG TYPE: DWG DFTR : VMO/ANE THE CCR MATERIALS WILL TAKE PLACE PRIOR TO, AND/OR DURING, IMPLEMENTATION. \/ JOB NO: 7812-19-0194 CHKD: KRD REFERENCES: ^\\ ENERGY® 1. EXISTING GROUNDWATER CONTOURS PROVIDED BY SYNTERRA (2019). /\\ / \\\ / l / / / / NOT FOR DATE: DECEMBER 18, 2019 ENGR: JB 2. BORING LOCATIONS, PIEZOMETER LOCATIONS, AND SEEP LOCATIONS PROVIDED BY DUKE ENERGY. 3. EXISTING TOPOGRAPHIC INFORMATION WAS PRODUCED FROM PHOTOGRAMMETRIC METHODS FROM AERIAL PHOTOGRAPHY OBTAINED ON JULY 31, 2015 BY WSP. \ \� I \ \ FILENAME: .006 EXISTING GROUNDWATER CONTOUR MAP.dw APPD: JB 4. APPROXIMATE LIMITS OF CCR BOUNDARY EXTRACTED FROM BOTTOM OF ASH AUTOCAD CIVIL 3D SURFACE. BOTTOM OF ASH CONTOURS TAKEN FROM AMEC FOSTER WHEELER, / \\ / / / / / CONSTRUCTION g WASTE STRATEGY ANALYSIS, CLIFFSIDE STEAM STATION, APRIL 17, 2015. III / / / / DWG SIZE DRAWING NO. REVISION /IcoANSI ' i I/�'/ 22x3D' �'CLS C9XX.OXX.005 ---- I i, l 1 °O II 1, REV DATE JOB NO. PROJECT TYPE DES DFTR CHKD ENGR DESCRIPTION — INCHES 1 2 3 ITENTHS 10 20 30 T 6 Plotted By: Bell, Josh Sheet Set: 7812190194 — Unit 5 Inactive Ash Basin Layout:.006 EXISTING GROUNDWATER CONTOUR MAP December 18, 2019 09: 25:04pm 0: \Duke\CliffSide\7812190194 — Cliffside Closure Plan\Plansheets\Unit 5 Inactive Ash Basin\.006 EXISTING GROUNDWATER CONTOUR MAP.dwg A 10 .006 IREV.____ F %// / �/ / �U IIIII II i l'� / i / '/ --_� �� _ — \ \ \� /� / //, /l 1/ \' f \\ "\ ) / / ( 1 I /�'� ///:� % l //////'ii / ///i ////i/ /i / \ II / / _ _ _ _ - WA=04R \ fj // ///l l \ \\\( \\\\ IIII // I //// // /i o / / / IIIII I IIII I I I I I I I II I / / /� - - - - — - - G1n%�o s \ // r / / J _ \I //l / / /i �� //// /� / // / _ \_ - - � � , \ ///� // 1 \ I r rill/r//;/ -i ,t//�i/� ///� / / // r / I IIIII IIII I I III�III I II I �/ / I /�//�_ _ _ _ _ _ �_ - /r /��///// l/ l I\\\\ \\\ \ I I 1 �i�/ /ii/ii / /ii //// 1 \ I III�Mf� w-ggBR /// �ii/ /�/, _ — ; _�� \ �� / - I \\� 1 \\\\ /�� / /iii ri/i / / // / I / IIIII IIII -38D ////�// // - - \ ��\\ �\ = /// / /� \ \ \\ / / / / l / / / / I / / / = i / \ //// /i /ii / f / / \ �i/i�rr//� /oio I/� / A /III III IIIIIII lVA /l �ii//ii//i/�-_�v�_v vvv v v �0�� j /-\ �/A\1 \\V 1 //((�11 (/// // 1 //////�� III I I 1� IIII II IIII \\\ / /ii /////�-`�\\ \\`\\ \\\� \ \\B ��i JCS/ /�%� \\\\\ \ \ (\\\C \ / / ` \ ` / //� �' I I IIIII I I I \ /// / /„/ /// // / \ \ / / / /� / // \\ \ \ \ 1 \ \ 1 \\\\ \ \\\\\ //o / /%///�/ \ �/� / i / \ \ \ \ \ \ \ \\\\ \\� / / , \ I 1 �joo / / �/ // �l/ I III III IIIIIII I\\\ // r ///////�/�/ /////� \\\�\ \\�\\\�11�\\\ S��/ ///// j j�� i//(/�\\\�� 1 �\ \ \) \\ 1 \\\\\\\\\\\\ \\\\\\ % /� —� /r�r//�/�/////� ////% / / / IIII IIII IIIII1111 I \ / / /��/�ii� /// / \\\\ \ - _ _ / /� / \(� �\\ \ \ \ \ \\\ \ \\\\�\\\ \ - /i/ \ I / ///i�iii/ /i � /�// I / / // / / / - \ \\ \\ / / / / ; 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\A\vVA\ \\\V`\VA \/ \ \\\\ \\ v/-/l IIII l / �U5_o1s _ /1 vv v\\ / / III / o� 1 \ \ \\ \ \ \\ \\\ / ` / / // _ - - U5-01D I \\\ I ( / / / / �/ / / / / / / � �85 � SURFACE IMPOUNDMENT CLOSURE PLAN I \1 \A\\ \ VA \V A\\\\AVA ` V AV\ \ Vv_/��///�//� /� 11I vV�\\Vv� I / // / / / // �- / / / // / I \� �� \ \ \ \ \ \ /// / / \ \1 \J/ I ( // 111 / //� �// // / / / / / / I \ \ \ \\\ \ \\\\ \ \\ \ / / � r - _ _ _ _ - - 1 \1 )II I I I I / / / / / 1z / do ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION \ \ \ \ \ \� \ \\\ \ \ //O/ ---- 1� �_/ / I l / 1 ) 1 1\ \A\\ \\ VA\V A1\\\A \ \ _\ \V A\\VA �/� / 1 \\V //IIIII — - = j I I I I 1 111 / I l/\ // // // // Z30- // / / / / I I I 1 / � / / Wood Environment & \ \ V\\\\V AIII A\ \\ \v\v V //// 1 �/ A\ IIII- / ll I /III �// �' // / / / \ I \ \\\ / / / - , - / J / / ESTIMATED BOTTOM OF ASH CONTOURS I\ \ \ \ \ \ \ \ \ \ \ \ 11 \ \ \ \ \ //// / \ / _ - - - - ' ' \\\� - - - - - - - - / / / I/ (� (� �/ / / / / / / Infrastructure Solutions Inc. 1 \ \\ \ \ \ \ \ \ I \ \ \\\\/ �// / _------ \ \\ ------ / I >�/// / / / I \ \ \ \ \ \ \ I 1 \ \ \ \ \\ \\ /// / // /n \ — / / \\ � / — -- — — — / / / / /\ %///� / / � / � — — / / / / / 2801 YORKMONT ROAD, SUITE 100 \ 1 \ V \\\ / / V A — �///// / / — / / / / / / / / CHARLOTTE, NC 28208 FOR \\VA \0 VA\�1A\V AV A V' \ ✓//�//I / / —_--- A� / r 1 ( ///� / / I I I 1 1 \ \ \ \ \ \ \ \ \ I I \ \ \ \\ \ \ \ \ \ \\\ \\\ /// X/ \ / / / — — ' — — — _ — — / / — — — _ _ — _ _ — \ \ \ \ _ — — J — / / // // / / / / / i _ — — — / / / / / / / / TEL: (704) ENG: 00 FAX: C G 357-8638 I\ 1 \\\\ // / / — \ — — _ — — _ //�I// �� / / / — — j — — / / / / / / LICENSURE: NCENG:F-1253 NC GEOLOGY:C-247 ISSUED FOR REVIEW I I I I I 1 I \\\V A I I /--- � / // \ / / / \VA\ � / / -- - I I I I II I 1111 1\VV111'- I\1\\\A \ 1 I I I I /-\\�\v \� �/ // // � � _ � - - �\VA�� /// / SEAL SCALE: AS SHOWN DES: VMO I I I I I V I I I 1 I A I I I I I I\ I II I I I ' v v`\vv � // � _810- _ � v \\�� y // Ir // �� DUKE DWG TYPE: DWG DFTR : VMO/ANE IIII , I I I I I I 1 1 I I� I I I I IIII // l -; vAv� y� � �\�v, , I /� _ _ _ E N E �10014'V JOB NO: 7812-19-0194 CHI KRD 1 I I I I I III I I I I I I I 1 I I I I � I / I / v' v -?� �— v ` — — — — — — — — — _ / wv A / / / ® DATE: DECEMBER 18, 2019 ENGR: JB _ _ _ NOT FOR I I III I I I IIII I I IIIIIII III II / / / _�------=_--- \ / \\ \\ --� ----� \\ - - CONSTRUCTION I. I I I I I I III IIII I I I I I I I I I I — _ � �-- \� — — — � = _ _ ---_ _ = _—� \ \ \\\ /I \\\� J /////// FILENAME: .006 ESTIMATED BOTTOM OF ASH CONTOURS.dwg APPD: JB REFERENCES: ,\ \ n I I // / / / DWG SIZE DRAWING NO. REVISION 1. BOTTOM OF ASH CONTOURS TAKEN FROM AMEC FOSTER WHEELER, WASTE STRATEGY ANALYSIS, CLIFFSIDE STEAM STATION, APRIL 17, 2015. \ \ \� _ / / 2. BORING LOCATIONS, PIEZOMETER LOCATIONS, AND SEEP LOCATIONS PROVIDED BY DUKE ENERGY. r \ \\ / I o� / // /( // ANSI D 3. EXISTING TOPOGRAPHIC INFORMATION WAS PRODUCED FROM PHOTOGRAMMETRIC METHODS FROM AERIAL PHOTOGRAPHY OBTAINED ON JULY 31, 2015 BY WSP. \ \\\ \ \ / //� / / / I I I % 22"x34" C LS C9XX. OXX. 006 --- \\\\ \ \ //�/ \ \ 00 I ( l 1 N I \, REV DATE JOB NO. PROJECT TYPE DES DFTR CHKD ENGR DESCRIPTION — n. O 0 M 1 1 1 1 F INCHES 1 2 3 TENTHS 10 20 30 4 5 1 1 8 1 10 Plotted By: Bell, Josh Sheet Set: 7812190194 - Unit 5 Inactive Ash Basin Layout:.006 ESTIMATED BOTTOM OF ASH CONTOURS December 18, 2019 09: 25: 41pm Q:\Duke\CliffSide\7812190194 - Cliffside Closure Plcn\Plcnsheets\Unit 5 Inactive Ash Basin\.006 ESTIMATED BOTTOM OF ASH CONTOURS.dwg 2 3 4 5 r —sue i Y n - .: F 750 T r 7' f•; C y• i UNIT 5 INACTIVE 1 y OVERFLOW GABION SPILLWAY 40fill (SEE DEMOLITION NOTE 5) RISER INTAKE STRUCTURE AND OUTFALL PIPE D (SEE DEMOLITION NOTE 2) APPROXIMATE LIMITS OF CCR BOUNDARY (TYP.) y, 790 F DEMOLITION NOTES: 1. THIS PLAN PROVIDES A SUMMARY OF CONCEPTUAL DEMOLITION PLANS OF STRUCTURES ASSOCIATED WITH THE ASH BASIN AS PART OF CLOSURE. A DETAILED DEMOLITION PLAN WILL BE DEVELOPED PRIOR TO CONSTRUCTION. 2. UNIT 5 INACTIVE ASH BASIN RISER INTAKE STRUCTURE AND OUTFALL PIPE TO BE REMOVED. 3. EXISTING 36" RCP TO BE REMOVED, GROUTED AND ABANDONED IN PLACE, OR SOME COMBINATION THEREOF. 4. DEMOLISH AND REMOVE PADS. CLEAN CONCRETE MATERIAL MAY BE REUSED OR RECYCLED. 5. DEMOLISH EXISTING OVERFLOW SPILLWAY AS NECESSARY FOR EMBANKMENT REGRADING. REUSE CLEAN CONCRETE AND STONE MATERIAL AS DESIRED. REMOVE AND STOCKPILE GABION STONE FROM DOWNSTREAM SPILLWAY PORTION. NOTE: 1. THE "APPROXIMATE LIMITS OF ASH BASIN FACILITY BOUNDARY" AND THE "APPROXIMATE LIMITS OF CCR BOUNDARY" ARE BASED ON AERIAL PHOTOGRAPHY, TOPOGRAPHIC MAPPING, AND OTHER HISTORICAL DRAWINGS AND INFORMATION AND SHOULD BE CONSIDERED APPROXIMATE. THE "APPROXIMATE LIMITS OF ASH BASIN FACILITY BOUNDARY" INCLUDES THE CONTAINMENT DAMS AND DIKES WHILE THE "APPROXIMATE LIMITS OF CCR BOUNDARY" EXCLUDES THOSE STRUCTURES AND IS BASED ON UPDATED TOPOGRAPHIC MAPPING, REPORTED OPERATIONAL LEVELS, AND SUBSURFACE DATA COLLECTED WITHIN THE BASIN. IT SHOULD BE NOTED THAT THE DETERMINATION OF THE ACTUAL LATERAL EXTENT OF THE CCR MATERIALS WILL TAKE PLACE PRIOR TO, AND/OR DURING, IMPLEMENTATION. REFERENCES: 1. BORING LOCATIONS, PIEZOMETER LOCATIONS, AND SEEP LOCATIONS PROVIDED BY DUKE ENERGY. 2. EXISTING TOPOGRAPHIC INFORMATION WAS PRODUCED FROM PHOTOGRAMMETRIC METHODS FROM AERIAL PHOTOGRAPHY OBTAINED ON JULY 31, 2015 BY WSP. 3. APPROXIMATE LIMITS OF CCR BOUNDARY EXTRACTED FROM BOTTOM OF ASH AUTOCAD CIVIL 3D SURFACE. BOTTOM OF ASH CONTOURS TAKEN FROM AMEC FOSTER WHEELER, WASTE STRATEGY ANALYSIS, CLIFFSIDE STEAM STATION, APRIL 17, 2015. INCHES 1 2 3 TENTHS 10 20 30 4 6 7 1Avir X 0. I 4 O 770 y \.fie � • . X CONCRETE PAD SON NOTE 4) w '' CONCRETE PAD / `'� ` _ • SEE DEMOLITION NOTE 4 F 44 t Aft IF I I •a ■RF , I ' ? r • x - Y EXISTING 36" RCP (SEE DEMOLITION NOTE 3) 0 AAREV� DATE .007 REV ____ 120 0 120 240 FT EXISTING WAREHOUSE BUILDING TO REMAIN , APPROXIMATE LIMITS OF CCR BOUNDARY (TYP.) - ww _ + r �� tt�� w�_ 'r -* . ff� �i �`',r . t.k �t •'%.s'e�i: _ z :irk.. 80 b �g, . .• ."E 40 !- + : • r/ff}9Cr f SSA d, V A`_! 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PROJECT TYPE DES DFTR CHKD ENGR DESCRIPTION 6 7 8 9 10 7u 1 1 1 1 F--� Plotted By: Bell, Josh Sheet Set: 7812190194 — Unit 5 Inactive Ash Basin Layout:.007 DEMOLITION PLAN December 18, 2019 09: 26: 50pm Q:\Duke\CIiffSide\7812190194 — Cliffside Closure Plan\Plansheets\Unit 5 Inactive Ash Basin\.007 DEMOLITION PLAN.dwg REV.____ F �%// /!�/'/f'" I IIII' II ii�'�/ � iY /� — _-�� _ � � � ��\� \ \ \��, / //, i i i l�/l� ' )�\� • � � / v ( ) 1 Iv/Y�'%/'/' �% / � '//�%//'i//// �// \ v(vI ei0r\/\A\v\/ _ / \ '7S-2* \ 730 o%\ 3 HE _07p G-313HI 1/ //\��/ I /i —/_i ��;�//i/// �/�%/�%//%��\/w �\�\ 1%11=11 \�1 \3 1\�\ A\� V1\A\✓ ` I�\/IV/ �\/ II\ ///II/I// i / ///I //��/�////�j/oi /mo�/�o��/%/////ji�//r� ��/ii/1i///�/°/ii/p�///�//// ��//� /\i/j///rr//j%�//i/� / II/JII 120 A \ I IIIIIIII x0X N --❑1—2�0 ' x x X�\ 240 FT ($G At03 76 s IV > IIIII A/o \4CCR-u lxx— ,1\ I\ 1�A�/�I'/ A\I/I �/\ I�\�vI\ IA/III\/\zI�I/\ II/Il\II \I\/\ //\\�v\II�//\/I\V /vI/ II�\/I /\I \�\\\� vI1// vI\ �/\ II�I//I.VI/v /� \I�\II\//\\�1 \/\\I/��\/ \ ""r1�I1I\\im�\A \r \\ \v /I\/I�\\o\�-�\/\ \lII/ \/v V\l\ II�A \// ///I\\\\1_\ /�ivA\V11�I 1�\\i� 11/II�\V=VI\/1�A/lI1S` \ 16 I/ l\// �/�I\\A V /�/I\\I\rI�\\i\//V v �0�/�I\�Ii\ v AI%\ A/ // /—/0III\ \(//1�/=/// i;I /vIIv \~9IV—j\�\�l\ / /II I///v//I/ �_��— iIIl_� = % I�/\�/vI �/l\I\wAlv w /=/— I// -%I\ �i\�\/I✓I,/v//I_/�Iv%\/v �� A/l/\v�I l I //II� vV / lv '\\/\ I �\/I/ /\/\ /rv/ im%- \\ II�v\i _�Ai/\I/ I\l� \v�/\\ /�v /I/i\�\/ l/�\�( —\/////I/�l/ \ \j\�/i/v\\_/A /�I/�l\\// \y / v %/i\//„l`yi-1��0/ /\Il�\/�Av /�� — I I�l �9l� �I/ Itil/ //- _;//II///II/I / / /////ij/�i\_ v/ � � 1_/ / i/ /�///I\/1 l= /A/�/�/ /Ii//l\// //�/li �ro\I/Jce �i / l/I�// ///_ill,/ \/ I / //';/ %��/ I=\r/i ///_l—/// //-�I/;/\///// �\ I % -,// /—//�°— -, //.+/I/jv/I\ 0/�v�>Is/ !Io�/ 0I,-°v/—_/II/I19///_,v— I // �r\j-M� /=I-v_i/\ /Ii/I(/_//// //_/// _+/\/I"_� _/ v//� //// _ I //Io_///\////'1/ l / // /�v/ ti /_ //I /l_o / \/`— =-//_( ///// / �4/ I/ �'/i/l vl/�=D\� / /—/� /%//llI—�, / /l �l1 / //—�j/ ///v /lI//l/+////_ ///I� i/l��i/0l - I/ // „/i _I/i\%/;0I/lIi/ ` // l//l ,jl I/l' _�/lII//I/ /IC�l/I_jC4jII��// I I/0 cll///I/�///�Il/� l/\�l/ II�/L//lII/ l�I�l5�II jv/// IIIlIli// /I�%/-I10Iv/l//II1>I//1/I% _Il/Ill//I/E/ l/�/II2SI//Iv\ / I lrI //2 II/l1I�/ /oltiIIr�l//l�// �I I/�IlI II II'_ll//� I�/I) zI//IiIIII/s1/�/I/>_ I/Il +//III�l/l/�/`I1/L6Il/�I 1' /I1l/I II/1ii�I II/I/0l✓I��I/I�I/oII/l�// //�IIII7II�IlI�vlII�III /I'I7/lI�ll/\ II\II/II/-1Ill0IIII�I /l/II/v�II�l\ %II1IIIII//IpIvIII,III�II/ I/ 1IlI�II1Il-_I1II�IIIvvIlIvIl1 II III/I�lvlIIIIII/I/ II—IlIII/III �I1, IIIlI1 III/AjI—I 1l \III —II I� I1/II/I IIIIII I I2,IIIlI /III—III I 3/lII\II_I/ +�III/I III+1 III0I/I1 I_II1I\I-/�0I/_lII0jI'II\III�//I1ol/ IIIII,II/ 1I lI �I/ I II/ I// —Il/J\— —I'1I1 11I//I/ l/� IIl /�/ I/1 I / // I l' —II// _;/l; / / I / /I ll!// ,/ a- /lIA/ s�/1o_l -+��/ _o0//l 0// -' N/\ __— /�_/I >— // _—\/ / / / _/ ��_ —_00 /5B /0_ +\-0/0�0B A9_/0//V'v � /�6I //�8v/I° /� / /// ��\ y/� //F4/�6////X// +/� /I / j0/////�V0 /9/�// //i te—I // o 1y//�o �/i/j /r�1 / �/ti// F// u/l1// //lv0I �/ 7 / \/ IA\l+I/// T\p//�0�I/5/ v/ %//// / I /\\/////1Ii \)/Ilj/\1 1/I1 1I V/ / I1// %\V�—I �\1/\ll / A I /1 �/�1IF/ 1\/i'—`�//II/ l�fV/\ /—vi/ � ///Aal\�Al�i\/=/A 1\/�(\y/1 v v//�F�\\ v \/i� \��//�V� /\/\/ /iI//Iv\//�J/vi\/ 1i /\i\�\\//v/v/_�(\- v /— \//)1�— \ \'/�i\\/� /%\/ /v/1�/�\ \ V�% / / � — �= _�(I /�v \�v�v_^�\—, ��/ 9 I\ _//\_\ /v1�_+/-v II= �_ 0\ \_I� //l v/0 I// —_\/ — \\\—I—/vv1 /\— \ ,\�II �—v�\v—I\/o_\l \—\\\—\-- /�/v\—\I�_ \\\\/ �—/_I1'7\\, �—v\ v \\ \_/5\ \= _ / =i;//0_ X v\A1\—��v�_\) I 1 \ \ 1—\� \\ vI_\l/v\IV11 I I 1\ `I�1 I\\� \\I �I_I A�I—I\\, 1vvI\1—�11\I\�i \1 I'1 \ 1—I\� A �—I 1\Vvr\I 1 I _/— EI A1 \1\� \ II � �_�II I��_ \\\aI� IV�� I��1_\ /gA\ III — —I/ //1I,Io-I \—, \\ II-�—\/I \1I I\\\_I�v/ II\ j�\IIv —I \;�_\ \ /I1 �—VA�\ I \\\\i/I �ilIIIi\I \ II I1/\ \I�IIII\ IV�1\I)I/ /✓\ 1�\I\yi/_ (I/I \ _II 1 I � V\� /\1\\(I _°III1 \/`_\I/I\III//�\ �v i11I1II\ /I —� \ xQ0 D-D° o II // /Q°\ v\ I �& W\ \ 770 oo cC-IR4_1ems �0\2 z 1y �/os -710 Illl INACTIVE ASH BASIN o 700g Jill 8+00 / — � \v \ \/ v\ \ /\\ /I /vo � / \v Gv \//>I —/ � / 1 ' / ti � OB BR 4+00 Xy C-00&s-17 v SEE ° ssoo�13_2 740 // GIVI 690A e l3H co C °\ \— �_ x +00/ /�2\6 0 -:z'✓ T 316/ x 0 \ I Oo 0 111 p \ II IIIQ�° ��770 � \o°o G�VA- 6D vn790 ° o � 80 ////� A \ 790 _p0\ - ,810 830; \ A_840_ /(5m\TIT AACTIVE UNIT 5 ASH BASIN COAL COMBUSTION RESIDUALS o\ A0SURFACE IMPOUNDMENT CLOSURE PLANwood.11ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION F it z Wood Environment & EXCAVATION PLAN —_ __ Infrastructure Solutions Inc.1V \ I i / / 2801 YORKMONTROAD, SUITE 100 CHARLOTTE, NC 28208 FOR790 TEL: (704) 357-8600 FAX: (704) 357-8638 ISSUED FOR REVIEW \V — _ --- LICENSURE: NCENG:F-1253 NCGEOLOGY:C-247 J 800 SEAL SCALE: AS SHOWN DES: VMO DWG TYPE: DWG DFTR: VMO/ANE 810 UKE -19-0194JOB NO: 7812CHKD: KRDENERGYNGR: JB: ,/ NOTFOR — IFILENAME: .008 EXCAVATION PLAN.dwg CONSTRUCTION REFERENCES: \ 12 // // DWG SIZE DRAWING NO. REVISION 1. BOTTOM OF ASH CONTOURS TAKEN FROM AMEC FOSTER WHEELER, WASTE STRATEGY ANALYSIS, CLIFFSIDE STEAM STATION, APRIL 17, 2015. _ 2. BORING LOCATIONS, PIEZOMETER LOCATIONS, AND SEEP LOCATIONS PROVIDED BY DUKE ENERGY. r / I I /\ cn 3. EXISTING TOPOGRAPHIC INFORMATION WAS PRODUCED FROM PHOTOGRAMMETRIC METHODS FROM AERIAL PHOTOGRAPHY OBTAINED ON JULY 31, 2015 BY WSP.I/N I / 22's3ANSI ° C LS C 9XX. OXX. 008 --- I \, REV DATE JOB NO. PROJECT TYPE DES DFTR CHKD ENGR DESCRIPTION I — INCHES 1 2 3 ITENTHS 10 20 30 Plotted By: Bell, Josh Sheet Set: 7812190194 — Unit 5 Inactive Ash Basin Layout:.008 EXCAVATION PLAN December 18, 2019 09:27: 51pm 0: \Duke\CliffSide\7812190194 — Cliffside Closure Plan\Plansheets\Unit 5 Inactive Ash Basin\.008 EXCAVATION PLAN.dwg 10 I 1 .009 REV .____ w F 785 780 775 770 765 760 755 750 745 740 735 730 725 720 715 710 705 700 695 690 685 680 675 670 668 770 765 760 755 750 745 740 735 730 725 720 715 710 705 700 695 690 685 680 675 670 668 SECTION A -A \ EXISTING GRADE \ BOTTOM OF ASH \ \ \ 770 765 760 755 750 745 740 735 730 725 720 715 710 705 700 695 690 685 680 675 670 668 0 o O 0 O O 0 0 0 0 O O 0 o O 0 0 0 O LO O LO O LO 0 LO O LO 0 LO O LO O LO O LO 00 + + + + + + + + + + + + + + + + + + + O o N N co co It It Ln LO (O (O ti ti 00 00 00 SECTION C-C SECTION B-B 770 765 760 755 750 745 740 735 730 725 720 715 710 705 700 695 692 770 765 760 755 750 745 740 735 730 725 720 715 710 705 700 695 692 O O O O O O O O O O O O O O N O Ln o Ln O LO O LO O LO O LO O 0 I- + + + + + + + + + + + + + + + O O N N (M (M LO LO (0 (0 (O 785 780 775 770 765 760 755 750 745 740 735 730 725 720 715 710 705 700 695 690 685 680 675 670 668 0 o O O o 0 0 o O O o 0 0 0 0 o O O o o O O O O O O O O O O O O O O O O O O orn O LO O Ln O LO O LO O Ln O LO O Ln 0 Ln O LO O LO o V) o LO o LO o LO o LO o Ln O LO o V) O M 00 + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + O o N N co cM It It LO LC) (O co 1 ti 00 00 O O O O N N co co LO Lf') (0 CO f*- f*- 00 00 0')M REV DATE JOB NO. PROJECT TYPE DES I DFTR I CHKD I ENGR DESCRIPTION INCHES 1 2 3 TENTHS 10 20 30 4 5 6 7 0 0 N 0 0 N SECTION D-D 775 770 765 760 755 750 745 740 735 730 725 720 715 710 705 700 698 775 770 765 760 755 750 745 740 735 730 725 720 715 710 705 700 698 O o 0 o O O O O o 0 O O O O LO O LO O LO O LO O LO O LO 0 co t t + + t t t t + + t t t t O O N N co M NT NT LO LO (0 (0 A--� TIT WAACTIVE UNIT 5 ASH BASIN COAL COMBUSTION RESIDUALS wood. SURFACE IMPOUNDMENT CLOSURE PLAN ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION F Wood Environment & Infrastructure Solutions, Inc. 2801 YORKMONT ROAD, SUITE 100 CHARLOTTE, NC 28208 TEL: (704) 357-8600 FAX: (704) 357-8638 LICENSURE: NC ENG: F-1253 NC GEOLOGY: C-247 EXCAVATION PLAN PROFILES FOR ISSUED FOR REVIEW SEAL NOT FOR CONSTRUCTION DUKE rl ENEK%--7Y® SCALE: AS SHOWN DES: VMO DWG TYPE: DWG DFTR: VMO/ANI JOBODECEMBER ATE 118, 2019 ENGR: JBD FILENAME: .011 EXCAVATION PLAN PROFILES.dwg APPD: JB DWG SIZE DRAWING NO. REVISION ANSI D 22"x34" C LS C9XX. 0XX. 009 - - - - 8 9 10 Plotted By: Bell, Josh Sheet Set: 7812190194 — Unit 5 Inactive Ash Basin Layout:.011 EXCAVATION PLAN PROFILES December 18, 2019 09: 28: 45pm Q:\Duke\CIiffSide\7812190194 — Cliffside Closure Plan\Plansheets\Unit 5 Inactive Ash Basin\.011 EXCAVATION PLAN PROFILES.dwg REV.____ F A- CHANNEL TO BE INITIALLY \ I \\\ \\\ \ I I 1 STABILIZED BY GROUTED RIPRAP. 1\\\\ I\\ \ \ \ \5— _ FINALLY STABILIZATION IS \\\ I \ \ \ / I IIII IIII IIIIII l \ X /�� / / /\/�//�// i i �_� \ \� \ \ \ \\\ \ \ \ ( jC SUBJECT TO CHANGE, DEPENDING \I \ \ \ \ ON EXCAVATION AND FINAL \ \ \ \ 1 \ \ DESIGN PROGRESS INTO 730 = _ _ � / cLosuRE, B1z' x \\\v \ V A\ VA \ 740 750 — =�� // _ /e \\G -31 \ \ \ 120 0 120 240 FT (�$(G� 036 s=7so w \ V A I > // / /y / r, l / v � V � V A � _ — _ vvv v v yvvvv %� i--v\\ \ \ / /��/ / �i� / //1/ / /i / \ \ \ \ \\ \\ \\ \\\� /// /\\\� l I v I I IIIIIII 1 I1 /l � / / \ _ — — \ v v \ \ � / �.�' � � V1 VA /// /�/////� � l//��i/i �o � i _ �, _ — — , q e� Q II ll I I I I I I / / v `� v v v v '—�— �v v\ / sp �V/�i\ / X X x IIII 1 � / �i \ \/ \ �� ,, ,\ /� \ \ � � ////\l, � l \ � \ \ -�1 A m \ V A \ / / VA 1 1 yam/ \yam x x \\\(11\\\\\ / \ \ \ 1I IIII � �\ V�770 ll / �/ / \ \\ o Il / l/ll /IIIII l/ /// // \\ \ � /�i M I _ 6 CHANNEL _ \ / — 6jp ///\//2�014 .014 1363'LENGTH ER t15 1�8LL\ �I 5 6 014 014 _ \ \$c 5-os —x�l II / /l \/� 562' LENGTH J / / —_— ;- _-- - - � � ; � .0 , \ \� _ _ — M• \ IIII I �l IIII F 3.09%III\I II �I�I \\III I \ \\ \ \ \ \ \ Ce B�//// BR A A C-C ss .011 59% .011 8 \\\ " 710 �40 720.o x 1 \ \ \ \ \ \\\\ .. 720 �.. \ e 730 512'LENGTH 014/ 014 \ _ 6gp — —, R �? 750 _� �� -- --- ^\_------_ oy A CHANNEL TO BE INITIALLY /\\ \ �-• _ _ _ _ _ _ _ _ _ _ / STABILIZED BY GROUTED RIPRAP. / °O \\ \ / -- — — — — — _ - i / /---- — —\ ----i' FINALLY STABILIZATION IS j \ / �i ' — — — — — — — oHE ' — — \\ I3� �\ \\ ��\� \` \ \ \ \\� \ \ \ SUBJECT TO CHANGE, DEPENDING I / / ON EXCAVATION AND FINAL DESIGN PROGRESS F I B-B \ \ -CLOSURE.. 1 —�_ �° B-B /�' /\ii/ /��` ==L -- — — _= �\\�— — l� 11\ I I 1 I (( \ \\ I I\ 1 IIIII(/// ' —x� o� 2 s� ti \\ .011 OK \ I I \\ \ \ APPROXIMATE LIMITS OF CCR BOUNDARY TYP.) , v / / / �l l I / �� _—_ v A 1 v A �i / �/ ( VA VA A \ \VA �r vvyyvv vvvv \_/ / III � \\ \ \ / /°/ /// � ///740� \\ _//%\/ //i/ter l\ // \ `_ \\ \\ \ \ \ \ \ l —� / _—_�— \\ \ \ \1 \\ \ \\\ \ \ \\\ \11 I II \� �\ _ 1 \\ \ \ 1 \ \I • ,. 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THE "APPROXIMATE LIMITS OF ASH BASIN FACILITY BOUNDARY" AND THE "APPROXIMATE LIMITS OF CCR BOUNDARY" ARE BASED ON AERIAL PHOTOGRAPHY, \\ \ / / / DWG TYPE: DWG DFTR : VMO/ANE TOPOGRAPHIC MAPPING, AND OTHER HISTORICAL DRAWINGS AND INFORMATION AND SHOULD BE CONSIDERED APPROXIMATE. THE "APPROXIMATE LIMITS OF P10014,V ASH BASIN FACILITY BOUNDARY" INCLUDES THE CONTAINMENT DAMS AND DIKES WHILE THE "APPROXIMATE LIMITS OF CCR BOUNDARY" EXCLUDES THOSE \\ / JOB NO: 7812-19 0194 CHKD: KRD STRUCTURES AND IS BASED ON UPDATED TOPOGRAPHIC MAPPING, REPORTED OPERATIONAL LEVELS, AND SUBSURFACE DATA COLLECTED WITHIN THE BASIN. _ \\ \ / ! / ! E N E® IT SHOULD BE NOTED THAT THE DETERMINATION OF THE ACTUAL LATERAL EXTENT OF THE CCR MATERIALS WILL TAKE PLACE PRIOR TO, AND/OR DURING, — — _ / / \\ \\ % \\ / f / , / / NOT FOR DATE: DECEMBER 18, 2019 ENGR: JB IMPLEMENTATION. _ ��\ \ I \ \ , / CONSTRUCTION FILENAME: .012 FINAL GRADES.dwg APPD: JB 1 DWG SIZE DRAWING NO. REVISION REFERENCES: - � \ \\ \ t � I �, / / / 1. ASH BASIN FACILITY BOUNDARIES, BORING LOCATIONS, PIEZOMETER LOCATIONS, AND WETLAND AND SEEP LOCATIONS PROVIDED BY DUKE ENERGY. ANSI D 2. EXISTING TOPOGRAPHIC INFORMATION WAS PRODUCED FROM PHOTOGRAMMETRIC METHODS FROM AERIAL PHOTOGRAPHY OBTAINED ON JULY 31, 2015 BY WSP. \\ \ \ \ / /co / I I I / ( i ( 22"x34" C L S C 9XX . OXX . O 1 O --- REV DATE JOB NO. PROJECT TYPE DES DFTR CHKD ENGR DESCRIPTION — // r 11111711 71 X� / \\\\\\Mk v / /HE / \3H0 VA �� VA\V�//� A/0*6//� INCHES 1 2 3 ITENTHS 10 20 30 Plotted By: Bell, Josh Sheet Set: 7812190194 — Unit 5 Inactive Ash Basin Layout:.012 FINAL GRADES December 18, 2019 09: 29: 43pm Q:\Duke\CIiffSide\7812190194 — Cliffside Closure Plan\Plcnsheets\Unit 5 Inactive Ash Basin\.012 FINAL GRADES.dwg 10 7 .011 REV .____ SECTION A -A 770 765 760 755 750 745 740 735 730 725 720 715 710 705 700 695 690 685 680 675 670 668 SECTION C-C 785 780 775 770 765 760 755 750 745 740 735 730 725 720 715 710 705 700 695 690 685 680 675 670 668 770 765 760 755 750 745 740 735 730 725 720 715 710 705 700 695 690 685 680 675 670 668 0 o O O o O O o 0 0 o O o o O O o 0 O LO O LO O LO O LO O LO O LO O LO O LO O LO 00 + + + + + + + + + + + + + + + + + + + O (D r r N N co co � LO LO (O (O rl- ti O O M SECTION B-B 770 765 760 755 750 745 740 735 730 725 720 715 710 705 700 695 692 770 765 760 755 750 745 740 735 730 725 720 715 710 705 700 695 692 O O O O O O O O O O O O O O N o LO O Ln 0 LO 0 LO O LO o LO o LO rl- + + + + + + + + + + + + + + + O O r r N N M M LO LO (D (D (D 785 780 775 770 765 760 755 750 745 740 735 730 725 720 715 710 705 700 695 690 685 680 675 670 668 o O o 0 0 0 o O o 0 0 o O o O O o o O O O O O O O O O O O O O O O O O O O O orn O LO O LO O LO O LO O LO O LO O LO O LO O LO O LO 0 LO O LO O LO O LO O LO O LO O LO O LO O LO 00 + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + O O r r N N co (M I M LO (O (o r__ r__ M M O O O O r r N N co co It It LO LO (O (o I'_ 1 00 00 aim r r r r r r r r r r r r r r r r r r rr SECTION D-D 775 770 765 760 755 750 745 740 735 730 725 720 715 710 705 700 698 0 N 0 0 N •0 0 100 200 775 770 765 760 755 750 745 740 735 730 725 720 715 710 705 700 698 0 o O O o o O o 0 0 0 0 o r O M O LO O LO O LO O LO O LO O co + + + + + + + + + + + + + + O o r r N N co M N LO LO O O A--� 1 1 1 1 TIT KACTIVE UNIT 5 ASH BASIN COAL COMBUSTION RESIDUALS wood. SURFACE IMPOUNDMENT CLOSURE PLAN ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION F F Wood Environment & Infrastructure Solutions, Inc. FINAL GRADES -PROFILES 2801 YORKMONT ROAD, SUITE 100 CHARLOTTE, NC 28208 FOR TEL: (704) 357-8600 FAX: (704) 357-8638 LICENSURE: NC ENG: F-1253 NC GEOLOGY: C-247 ISSUED FOR REVIEW SEAL SCALE: AS SHOWN DES: VMO DUKE DWG TYPE: DWG DFTR : VMO/ANE ENERt"-**v JOB NO: 7812-19-0194 CHKD: KRD NOTFOR® DATE: DECEMBER 18, 2019 ElJB CONSTRUCTION FILENAME: .013 FINAL GRADES-PROFILES.dwg APPD: JB DWG SIZE DRAWING NO. REVISION ANSI D 22"x34" CLS C9XX.OXX.011 ---- REV DATE JOB NO. PROJECT TYPE DES DFTR CHKD ENGR DESCRIPTION — INCHES 1 2 3 TENTHS 10 20 30 4 5 6 7 8 9 10 Plotted By: Bell, Josh Sheet Set: 7812190194 — Unit 5 Inactive Ash Basin Layout:.013 FINAL GRADES —PROFILES December 18, 2019 09: 30: 33pm Q:\Duke\CIiffSide\7812190194 — Cliffside Closure Plan\Plansheets\Unit 5 Inactive Ash Basin\.013 FINAL GRADES— PROFILES. dwg .012 IREV .____ F GV�A-061k — — — — — --_ I� cQS 0B2R6 60 0 60 120 FT °$GVw �i \ GWA-68�� 014s\$ � CCR-U��-0o1 � cLE o�io 0) I I I\ V A\ -115\02�9 �o A V A° V \ V \ V // GA�7B ° \ \ V A \ f � A / / \/ /� �� CR- 5-03D\ 804c--��7— CCR U5 05D I I 3D \\ \ 115414D IJ5-04BR \\ \\ \ \\\ \ \ 730 \ \\ \ \\\°\\\\\\\ \B-12 \ \\ \ \ \ \ A) > 760 0 v \ \wl \\\\\ / vv vv v v vvv\Vv v v v\ v v V svvvv�v�vv\V I A AAA \ \A\\V A V A \ \ �o 800 - REFERENCES: 1. BOTTOM OF ASH CONTOURS TAKEN FROM AMEC FOSTER WHEELER, WASTE STRATEGY ANALYSIS, CLIFFSIDE STEAM STATION, APRIL 17, 2015. — 2. BORING LOCATIONS, PIEZOMETER LOCATIONS, AND SEEP LOCATIONS PROVIDED BY DUKE ENERGY. 3. EXISTING TOPOGRAPHIC INFORMATION WAS PRODUCED FROM PHOTOGRAMMETRIC METHODS FROM AERIAL PHOTOGRAPHY OBTAINED ON JULY 31, 2015 BY WSP. TirIFdACTIVE UNIT 5 ASH BASIN COAL COMBUSTION RESIDUALS wood* IMPOUNDMENTSURFACE ROGERS ENERGYCOMPLEXCLOSURE C I FSIDE STEAM STATION Wood Environment & Infrastructure Solutions, Inc. 2801 YORKMONT ROAD, SUITE 100 CHARLOTTE, NC 28208 TEL: (704) 357-8600 FAX: (704) 357-8638 LICENSURE: NC ENG: F-1253 NC GEOLOGY: C-247 MAIN DAM INITAL CONDITIONS FOR ISSUED FOR REVIEW SEAL NOT FOR CONSTRUCTION D UKE ENERI (D SCALE: AS SHOWN DES: VMO DWG TYPE: DWG DFTR : VMO/ANI JOB NO: 7812-19-0194 CHI I DATE: DECEMBER 18, 2019 ENGR: JB FILENAME: .014 MAIN DAM INITAL CONDITIONS.dwg APPD: JB DWG SIZE I DRAWING NO. REVISION ANSI D I 22"x34" CLS C9XX.0XX.012 ---- I'� 0 N 1 1 1 1 F INCHES 1 2 3 ITENTHS 10 20 30 REV I DATE I JOB NO. I PROJECT TYPE I DES I DFTR I CHKD I ENGR Plotted By: Bell, Josh Sheet Set: 7812190194 — Unit 5 Inactive Ash Basin Layout:.014 MAIN DAM INITAL CONDITIONS December 18, 2019 09: 32: 28pm Q:\Duke\CIiffSide\7812190194 — Cliffside Closure Plan\Plansheets\Unit 5 Inactive Ash Basin\.014 MAIN DAM INITAL CONDITIONS.dwg DESCRIPTION 10 .013 REV .____ F V\A- // A -A \�\\\-- \\\ \\ \\ \ \ \ \ \�`\ \ \ _ C nil \\ /// - - - - - - - — — — — — — — — _ CHANNEL TO BE INITIALLY \ \ / 7 j j\ \ \ \ \ I \ — — — _ — — — — — STABILIZED BY GROUTED RIPRAP. \ \ \ \\ _—/ / \ \ \ \� --------_ _ FINALLY STABILIZATION IS \� \\ \ \/� \ \ IGWAOPBkA--- - — — — — _ — — — \ — — - �SUBJECT TO CHANGE, DEPENDING AON EXCAVATION AND FINAL II� \ I �- �- \- - - - �- WO1• \ \\\\ \\\- \1\\ \ o�\ \\\\ \V\V \\ \v\\\\ \\\\ \\\ \1V\ \\ A \ \\ \ \°p \ \ \ \ \\ \ \ \\\\ \ \� \\\v�\ A \\ \\\\ v\ \\\ v \ I I I \/II � I \ti1 \ \\ V \\v \ \v\ \\\ \ \ \ —_—_ /— I ,^oI II \ I I I \ \ I \I I I o \ \I I \ III I I / III ,�� / I// / I l/ /l l/ / r I \/ /1 03D-- ADESIGN PROGRESS INTO -- ---v \ \ 6� O \�\O 6�0 I 120 FT ------� ABRp\CLOSURE.cc '. . .. . . - � oll -oX Gw -6\86* I - - - - 04S$ CCR-U�O�B� B-B 1/ / A � I I I ( I i F R n A �� .011 \ 1 III 1 I I /° / � v i� V � I I I dw -67R�• cFR�olSoz \ \��p� v v\ v°'011 v A v / )// \ I I \\ V �l) //1/1 ///Gev - BI � '� / �I / 8�1 I I \ � / � Il � � � V r \ \ \ V \ \ a�E / V I / / / / / / 17xp Sp \ V / CCR U5 05D I I I I I l I A A I V A \ \ \ CHANNEL TO BE INITIALLY r AA=A .011 tk NOTE: 1. THE "APPROXIMATE LIMITS OF ASH BASIN FACILITY BOUNDARY" AND THE "APPROXIMATE LIMITS OF CCR BOUNDARY" ARE BASED ON AERIAL PHOTOGRAPHY, TOPOGRAPHIC MAPPING, AND OTHER HISTORICAL DRAWINGS AND INFORMATION AND SHOULD BE CONSIDERED APPROXIMATE. THE "APPROXIMATE LIMITS OF ASH BASIN FACILITY BOUNDARY" INCLUDES THE CONTAINMENT DAMS AND DIKES WHILE THE "APPROXIMATE LIMITS OF CCR BOUNDARY" EXCLUDES THOSE STRUCTURES AND IS BASED ON UPDATED TOPOGRAPHIC MAPPING, REPORTED OPERATIONAL LEVELS, AND SUBSURFACE DATA COLLECTED WITHIN THE BASIN. IT SHOULD BE NOTED THAT THE DETERMINATION OF THE ACTUAL LATERAL EXTENT OF THE CCR MATERIALS WILL TAKE PLACE PRIOR TO, AND/OR DURING, IMPLEMENTATION. REFERENCES: 1. ASH BASIN FACILITY BOUNDARIES, BORING LOCATIONS, PIEZOMETER LOCATIONS, AND WETLAND AND SEEP LOCATIONS PROVIDED BY DUKE ENERGY. 2. EXISTING TOPOGRAPHIC INFORMATION WAS PRODUCED FROM PHOTOGRAMMETRIC METHODS FROM AERIAL PHOTOGRAPHY OBTAINED ON JULY 31, 2015 BY WSP. X°O .oll I � — \VA \A \ VA\ \ REV I DATE I JOB NO. I PROJECT TYPE I DES I DFTR I CHKD I ENGR 6 DESCRIPTION X 00 I STABILIZED BY GROUTED RIPRAP. I ) \ x I I \ FINALLY STABILIZATION IS \ 1 SUBJECT TO CHANGE, DEPENDING I I \ x \ \ \ I ON EXCAVATION AND AL DESIGN PROGRESS INTO �\ \� \ CLOSURE. \14 B-4 \\ \\-9\\ \\\\\\\ \\\\ \\\\\I I I I I C \5U -ACC �iJ�461. 41 \ \ \ \ \ \sp\\ \\ \\ \ \ ✓ \ \f\ 3 9010 \ 5\065 \ \ \ \\\ \\ \ \ \ TirIFdACTIVE UNIT 5 ASH BASIN COAL COMBUSTION RESIDUALS wood. IMPOUNDMENTSURFACE ROGERS ENERGYCOMPLEXCLOSURE C I FSIDE STEAM STATION Wood Environment & Infrastructure Solutions, Inc. 2801 YORKMONT ROAD, SUITE 100 CHARLOTTE, NC 28208 TEL: (704) 357-8600 FAX: (704) 357-8638 LICENSURE: NC ENG: F-1253 NC GEOLOGY: C-247 MAIN DAM FINAL CONDITIONS FOR ISSUED FOR REVIEW SEAL NOT FOR CONSTRUCTION D UKE ENERt"-**v ® SCALE: AS SHOWN DES: VMO DWG TYPE: DWG DFTR : VMO/ANI JOB NO: 7812-19-0194 CHI I DATE: DECEMBER 18, 2019 ENGR: JB FILENAME: .015 MAIN DAM FINAL CONDITIONS.dwg APPD: JB DWG SIZE DRAWING NO. REVISION ANSI D ICLS C9XX.OXX.013 22"x34" — ---- 01 F INCHES 1 2 3 ITENTHS 10 20 30 Plotted By: Bell, Josh Sheet Set: 7812190194 — Unit 5 Inactive Ash Basin Layout:.015 MAIN DAM FINAL CONDITIONS December 18, 2019 09: 33: 24pm 0: \Duke\CliffSide\7812190194 — Cliffside Closure Plcn\Plcnsheets\Unit 5 Inactive Ash Bcsin\.015 MAIN DAM FINAL CONDITIONS.dwg 10 5 6 7 8 I .014 IREV ____ 8 OZ/SY NON -WOVEN GEOTEXTILE �� 12\N O� ISEEN a )�Q Nsp\\ VARIES q o �o�o�o�o� �c E ®�. A / o 0 0 0 0 0 �MPP �p6' gGRpOE / //%�/ VER NSO\ VARIES 1.0� c F\\� sEo %7j//�/// / \�cp CEP N�s°jc\��so� PPS �6'g°oE I E i ///////// GECP p�E pM � SEE /////////////////// / // //////�/ ////////////////////// // % % / / / / / / % % fix/ //// ///////�/�ij%j//////� �Pc\ %/�, ///�%j%j/j/j/%�%j / /�/�/////// / / / // //// /// // / / / / // R F NOTES: 1. THE THICKNESS OF VEGETATIVE SOIL COVER SHALL BE MEASURED FROM THE TOP OF THE EXCAVATION GRADES / RESIDUAL MATERIAL TO THE TOP OF THE VEGETATIVE SOIL COVER IN THE VERTICAL DIRECTION. TYPICAL SOIL COVER SYSTEM SCALE: 1" = 1' SEEDBED REQUIREMENTS Establishment of vegetation should not be attempted on sites that are unsuitable due to excessive soil compaction, inappropriate soil texture, poor drainage, concentrated overland flow, or steepness of slope until measures have been taken to correct these problems. To maintain a good stand of vegetation, the soil must meet certain minimum requirements as a growth medium. The existing soil should have these criteria: • Enough fine-grained (silt and clay) material to maintain adequate moisture and nutrient supply (available water capacity of at least .05 inches water to 1 inch of soil). • Sufficient pore space to permit root penetration. • Sufficient depth of soil to provide an adequate root zone. The depth to rock or impermeable layers such as hardpans should be 12 inches or more, except on slopes steeper than 2:1 where the addition of soil is not feasible. • A favorable pH range for plant growth, usually 6.0 - 6.5. • Free from large roots, branches, stones, large clods of earth, or trash of any kind. Clods and stones may be left on slopes steeper than 3:1 if they are to be hydro seeded. If any of the above criteria are not met - i.e., if existing soil is too coarse, dense, shallow or acidic to foster vegetation - special amendments are required. The soil conditioners described below may be beneficial or, preferably, topsoil may be applied. SEEDBED PREPARATION Install necessary mechanical erosion and sedimentation control practices before seeding, and complete grading according to the approved plan. Lime and fertilizer needs should be determined by soil tests. Directions, sample cartons, and information sheets are available through county Agricultural Extension offices. Testing is also done by commercial laboratories. When soil tests results are not available, follow rates suggested in the seeding specifications shown at right. Application rates usually fall into the following ranges: • Ground agricultural limestone: Light -textured, sandy soils: 1 to 1-1/2 tons/acre Heavy -textured, clayey soils: 2-3 tons/acre • Fertilizer: Grasses: 800-1200 lb/acre of 10-10-10 (or the equivalent) Grass -legume mixtures: 800-1200 lb/acre of 5-10-10 (or the equivalent) Apply lime and fertilizer evenly and incorporate into the top 4-6 inches of soil by disking or other suitable means. Operate machinery on the contour. When using a hydro seeder, apply lime and fertilizer to a rough, loose surface. Roughen surfaces prior to seeding. Complete seedbed preparation by breaking up large clods and raking into a smooth, uniform surface (slopes less than 3:1). Fill in or level depressions that can collect water. Broadcast seed into a freshly loosened seedbed that has not been sealed by rainfall. SEEDING Seeding dates given in the seeding mixture specifications are designated as "best" or "possible". Seedlings properly carried out within the "best" dates have a high probability of success. It is also possible to have satisfactory establishment when seeding outside these dates. However, as you deviate from them, the probability of failure increases rapidly. Seeding on the last date shown under "possible" may reduce changes of success by 30-50%. Always take this into account in scheduling land -disturbing activities. Use certified seed for permanent seeding whenever possible. Labeling of non -certified seed is also required by law. Labels contain important information on seed purity, germination, and presence of wood seeds. Seeds must meet State standards for content of noxious weeds. Do no accept seed containing "prohibited" noxious weed seed. Inoculate legume seed with the Rhizobium bacteria appropriate to the species of legume. Apply seed uniformly with a cyclone seeder, drop -type spreader, drill, cultipacker seeder, or hydro seeder on a firm, friable seedbed. When using a drill or cultipacker seeder, plant small grains no more than 1 inch deep, grasses and legumes no more than 1/2 inch. Equipment should be calibrated in the field for the desired seeding rate. When using broadcast -seeding methods, subdivide the area into workable sections and determine the amount of seed needed for each section. Apply one-half the seed while moving back and forth across the area, making a uniform pattern: then apply the second half in the same way, but moving at right angles to the first pass. Mulch all plantings immediately after seeding. HYDRO SEEDING Surface roughening is particularly important when hydro seeding, as a roughened slope will provide some natural coverage for lime, fertilizer, and seed. The surface should not be compacted or smooth. Fine seedbed preparation is not necessary for hydro seeding operations: large clods, stones, and irregularities provide cavities in which seeds can lodge. Rate of wood fiber (cellulose) application should be at least 2,000 lb/acre. Apply legume inoculants at four times the recommended rate when adding inoculant to a hydro seeder slurry. If a machinery breakdown of 1/2 to 2 hours occurs, add 50% more seed to the tank, based on the proportion of the slurry remaining. This should compensate for damage to seed. Beyond 2 hours, a full rate of new seed may be necessary. Lime is not normally applied with a hydraulic seeder because it is abrasive. It can be blown onto steep slopes in dry form SEEDING SPECIFICATIONS NOTES: 1. THE THICKNESS OF CLEAN SOIL COVER SHALL BE MEASURED FROM THE TOP OF THE EXCAVATION GRADES / RESIDUAL MATERIAL TO THE TOP OF THE CLEAN SOIL COVER IN THE VERTICAL DIRECTION. 2. THE THICKNESS OF CLASS B RIPRAP COVER SHALL BE MEASURED FROM THE TOP OF THE CLEAN SOIL COVER TO THE TOP OF THE CLASS B RIPRAP COVER IN THE VERTICAL DIRECTION. TYPICAL RIPRAP COVER SYSTEM SCALE: 1" = 1' MAINTENANCE Generally, a stand of vegetation cannot be determined to be fully established until soil cover has been maintained for one full year from planting. Inspect seeded areas for failure and make necessary repairs and reseedings within the same season, if possible. Reseeding --If a stand has inadequate cover, re-evaluate choice of plant materials and quantities of lime and fertilizer. Re-establish the stand after seedbed preparation or over- seed the stand. Consider seeding temporary, annual species if the time of year is not appropriate for permanent seeding. If vegetation fails to grow, soil must be tested to determine if acidity or nutrient imbalance is responsible. Fertilization --On the typical disturbed site, full establishment usually requires re -fertilization in the second growing season. Fine turf requires annual maintenance fertilization. Use soil tests if possible or follow the guidelines given for the specific seeding mixture. TEMPORARY SEEDING SPECIFICATIONS NOTES: 1. THE THICKNESS OF CLEAN SOIL COVER SHALL BE MEASURED FROM THE TOP OF THE EXCAVATION GRADES / RESIDUAL MATERIAL TO THE TOP OF THE CLEAN SOIL COVER IN THE VERTICAL DIRECTION. 2. THE THICKNESS OF VEGETATIVE SOIL COVER SHALL BE MEASURED FROM THE TOP OF THE CLEAN SOIL COVER TO THE TOP OF THE VEGETATIVE SOIL COVER IN THE VERTICAL DIRECTION. TYPICAL OVEREXCAVATION SOIL COVER SYSTEM SCALE: 1" = 1' Seeding mixture (fall) Species* Rate (lb/acre) Rye Grain (Seca/e cereal&) 120 Seeding Mixture (late winter early spring) Species* Rate (lb/acre) Rye Grain (Seca/e cereal&) 120 Seeding mixture (summer) Species* Rate (lb/acre) German Millet (Setaria italica) 40 Seeding dates (Piedmont) O Fall: Aug. 15 - Dec. 30 Late winter (early spring): Jan. 1 - May 1 Late Summer: May 1 - Aug. 15 Soil amendments Follow recommendations of soil tests or apply 2,000 lb/acre ground agricultural limestone and 750 lb/acre 10-10-10 fertilizer. Mulch Apply 4,000 lb/acre straw. Anchor mulch by tacking with asphalt, roving or a mulch anchoring tool. A disk with blades set nearly straight can be used as a mulch anchoring. tool. Maintenance Re -fertilize if growth is not fully adequate. Reseed, re -fertilize and mulch immediately following erosion or other damage. Pursuant to G.S. 113A-57(2), the angle for graded slopes and fills shall be no greater than the angle that can be retained by vegetative cover or other adequate erosion -control devices or structures. In any event, 3HAV or greater slopes left exposed will, within 7 calendar days of completion of any phase of grading, be planted or otherwise provided with temporary or permanent ground cover, devices, or structures sufficient to restrain erosion. Pursuant to G.S. 113A-57(3), provisions for permanent groundcover sufficient to restrain erosion must be accomplished for all disturbed areas within 14 working days following completion of construction or development. *REF: 6.10 A,B and C, NC Erosion and Sediment Control Planning and Design Manual, 2013 PERMANENT SEEDING SPECIFICATIONS Seedino mixture Species* Rate (lb/acre) Tall fescue (Festuca arundinacea ) (Grass lined Channels) 200 Tall fescue (Festuca arundinac&a ) (Other Areas) 100 Nurse plants Between May 1 and Aug. 15, add 10 lb/acre German millet (Setaria italica) or 15 lb/acre Sudan grass. Prior to May 1 or after Aug. 15, add 40lb/acre Rye Grain (Festucaarundinacea). Seeding dates Best Possible Fall: Aug. 25 - Sept. 15 Aug. 20 - Oct. 25 Late winter: Feb. 15 - Mar. 21 Feb. 1 -Apr. 15 Soil amendments Apply lime and fertilizer according to soil tests, or apply 4,000 lb/acre ground agricultural limestone and 1,000 lb/acre 10-10-10 fertilizer. Mulch Apply 4,000-5,000 lb/acre grain straw or equivalent cover of another suitable mulching material. Anchor mulch by tacking with asphalt, roving, or netting. Netting is the preferred anchoring method on steep slopes. Re -fertilize in the second year unless growth is fully adequate. May be mowed once or twice a year, but mowing is not necessary. Reseed, fertilize, and mulch damaged areas immediately. Pursuant to G.S. 113A-57(3), provisions for permanent groundcover sufficient to restrain erosion must be accomplished for all disturbed areas within 14 working days. T (_5 CHANNEL DIAGRAM .014 N.T.S. TIT WAACTIVE UNIT 5 ASH BASIN COAL COMBUSTION RESIDUALS wood. SURFACE IMPOUNDMENT CLOSURE PLAN ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION Wood Environment & Infrastructure Solutions, Inc. 2801 YORKMONT ROAD, SUITE 100 CHARLOTTE, NC28208 TEL: (704) 357-8600 FAX: (704) 357-8638 LICENSURE: NC ENG: F-1253 NC GEOLOGY: C-247 SEAL NOT FOR CONSTRUCTION DETAILS 1 FOR ISSUED FOR REVIEW DUKE SCALE: AS SHOWN DES: VMO DWG TYPE: DWG DFTR: VMO/ANE JOB : 7812-19-0194 CHI ENEK%W7Y( DATE: ODECEMBER 18, 2019 El JBD FILENAME: .016 DETAILS 1.dwg APPD: JB DWG SIZE DRAWING NO. REVISION F .014 N.T.S INCHES 1 2 3 *REF: 6.11L NC Erosion and Sediment Control Planning and Design Manual, 2013 TENTHS 10 20 30 A 5 REV I DATE I JOB NO PROJECT TYPE DES I DFTR ICHKDI ENGR 6 Plotted By: Bell, Josh Sheet Set: 7812190194 — Unit 5 Inactive Ash Basin Layout:.016 DETAILS 1 December 18, 2019 09: 33: 37pm Q:\Duke\CIiffSide\78I2190194 — Cliffside Closure Plan\Plansheets\Unit 5 Inactive Ash Basin\.016 DETAILS 1.dwg 7 DESCRIPTION 6.0 ANSI D 22"x34" C LS C9XX. 0XX. 014 A 10 3 1 5 6 7 8 I .015 REV .____ 3 1 DS75 MATTING OR EQUIVALENT EXISTING GROUND GENERAL NOTES: 1. DIVERSION BERM SHALL BE INSTALLED TO CONVEY RUNOFF TO SEDIMENT BASIN. 2. DIVERSION BERM SHALL BE INSTALLED IN GENERAL LOCATIONS WHERE SHOWN ON THE DRAWINGS WITH A MINIMUM OF 1% AND MAXIMUM OF 3% LONGITUDINAL SLOPE. 3. MATTING SHOULD BE USED IN GENERAL ACCORDANCE WITH DETAIL 3/.021 EROSION CONTROL MATTING. INSPECTION AND MAINTENANCE NOTES: 1. ALL EROSION AND SEDIMENTATION CONTROL DEVICES AND PLANTED AREAS SHALL BE INSPECTED EVERY SEVEN (7) CALENDAR DAYS AND AFTER EACH RAINFALL OCCURRENCE THAT EXCEEDS ONE (1) INCH WITHIN A 24-HOUR PERIOD. DAMAGED OR INEFFECTIVE DEVICES SHALL BE REPAIRED OR REPLACED, AS NECESSARY, AS SOON AS PRACTICAL. 2. REMOVE ACCUMULATED SEDIMENT WHEN IT REACHES 1/3 THE HEIGHT OF THE DEVICE. 3. REMOVED SEDIMENT SHALL BE PLACED IN STOCKPILE STORAGE AREAS OR SPREAD THINLY ACROSS DISTURBED AREA. STABILIZE THE REMOVED SEDIMENT AFTER IT IS RELOCATED. 4. REMOVE TEMPORARY E&SC MEASURES UPON STABILIZATION OF THE TRIBUTARY DRAINAGE AREA. REMOVE ALL CONSTRUCTION MATERIAL AND SEDIMENT, AND DISPOSE OF THEM PROPERLY. GRADE THE DISTURBED AREA TO DRAIN AND STABILIZE ACCORDINGLY. BROW DIVERSION BERM (FIELD LOCATE AS NEEDED) N.T.S DIRECTION OF STREAM FLOW IN CHANNELS, ROLL OUT STRIPS OF MATTING PARALLEL TO THE DIRECTION OF FLOW. ANCHOR MATTING IN A 12" TRENCH DITCH OR CHANNEL INSTALLATION SLOPE INSTALLATION JOIN STRIPS BY ANCHORING AND OVERLAPPING iGE OF MATTING GENERAL NOTES: 1. EROSION CONTROL MATTING SHALL BE INSTALLED WHERE SHOWN ON THE DRAWINGS AND AS NEEDED BASED ON FIELD CONDITIONS. 2. EROSION CONTROL MATTING INSTALLED ON SLOPES SHALL BE TENSAR DS-75 MATTING OR APPROVED EQUIVALENT. 3. EROSION CONTROL MATTING INSTALLED IN CHANNELS SHALL BE TENSAR DS-75 MATTING OR APPROVED EQUIVALENT. 4. MATTING SHALL BE INSTALLED SUCH THAT MATERIAL IS IN INTIMATE CONTACT WITH GROUND SURFACE OVER ENTIRE COVERED AREA AND SHALL BE MAINTAINED UNTIL VEGETATIVE COVER IN AREA HAS BEEN ESTABLISHED. 5. MATTING SHALL BE INSTALLED AND MAINTAINED PER DETAILS SHOWN AND SECTION 6.17 OF THE MAY 2013 NCDEQ "EROSION AND SEDIMENT CONTROL PLANNING AND DESIGN MANUAL." F 6. SEEDING AND MULCHING SHALL OCCUR, WHERE APPLICABLE, PRIOR TO INSTALLATION OF MATTING. 7. IN DITCHES OR CHANNELS, MATTING SHALL BE OVERLAPPED SUCH THAT UPSTREAM PIECE OVERLIES DOWNSTREAM PIECE. INSPECTION AND MAINTENANCE NOTES: 1. ALL EROSION AND SEDIMENTATION CONTROL DEVICES AND PLANTED AREAS SHALL BE INSPECTED EVERY SEVEN (7) CALENDAR DAYS AND AFTER EACH RAINFALL OCCURRENCE THAT EXCEEDS ONE-HALF (1/2) INCH WITHIN A 24-HOUR PERIOD. DAMAGED OR INEFFECTIVE DEVICES SHALL BE REPAIRED OR REPLACED, AS NECESSARY, AS SOON AS PRACTICAL. 2. MATTING MAY REMAIN IN PLACE UPON STABILIZATION OF THE TRIBUTARY DRAINAGE AREA. ('3 EROSION CONTROL MATTING (AS NEEDED) .015 N.T.S 12" DIAMETER COMPOST SOCK CHECK DAM TWO (2) 2" X 2" WOODE STAKES PLACED 4' O.( 2:1 MAX. SLOPE TWO (2) 2" X 2" WOODEN STAKES PLACED 8' O.C. STE WIRE FENCING (IF USED) WOVEN FILTER FABRIC 0 N GENERAL NOTES: WIRE FENCING (IF USED) Z FILTER FABRIC M J COMPACTED FILL f NLL FLOW L SLOPE 4" MIN. u 1. SEDIMENT FENCE SHALL BE INSTALLED WHERE SHOWN ON THE DRAWINGS AND AS NEEDED BASED ON FIELD CONDITIONS. 2. WIRE FENCING SHALL BE A MINIMUM OF 32" IN WIDTH, BE AT LEAST #10 GAGE, WITH A MINIMUM OF 6 LINE WIRES WITH 12" STAY SPACING. WIRE MESH SHALL BE MIN. 13 GAGE WITH MAXIMUM 12" OPENINGS. 3. WOVEN FILTER FABRIC BE USED WHERE SILT FENCE IS TO REMAIN FOR A PERIOD OF MORE THAN 30 DAYS. 4. STEEL POSTS SHALL BE 5-0" IN HEIGHT AND BE OF THE SELF -FASTENER ANGLE STEEL TYPE. 5. TURN SILT FENCE UP SLOPE AT ENDS. 6. ORANGE SAFETY FENCE IS REQUIRED AT BACK OF SILT FENCE WHEN GRADING IS ADJACENT TO SWIM BUFFERS, STREAMS OR WETLANDS (REFER TO SWIM BUFFER GUIDELINES). THE COLOR ORANGE IS RESERVED FOR VISUAL IDENTIFICATION OF ENVIRONMENTALLY SENSITIVE AREAS. 7. DRAINAGE AREA CANNOT BE GREATER THAN 1/4 ACRE PER 100 FT OF FENCE. MAX WATER LEVEL 4" MINIMUM FREEBOARD 12" DIAMETER COMPOST SOCK SINGLE INSTALLATION SECTION GENERAL NOTES: 1. COMPOST SOCKS SHALL BE INSTALLED AS NEEDED BASED ON FIELD CONDITIONS. 2. ADJOINING SECTIONS OF THE COMPOST SOCKS SHALL BE OVERLAPPED A MINIMUM 18 INCHES AND STAKED AT THE OVERLAP. 3. STAKES SHALL BE DRIVEN TO A MINIMUM DEPTH OF 12 INCHES WITH A MINIMUM 3 INCHES PROTRUDING ABOVE THE COMPOST SOCK. 4. IN AREAS OF DIFFICULT SILT FENCE INSTALLATION AND ONLY WITH THE APPROVAL OF THE ENGINEER, COMPOST FILTER SOCK MAY BE SUBSTITUTED FOR SILT FENCE. 2 TEMPORARY SILT FENCE 1.015 N.T.S STABILIZE DISCHARGE ARE INSPECTION AND MAINTENANCE NOTES: 2:1 MAX. SLOPE UNDISTURBED AREA �r 1. ALL EROSION AND SEDIMENTATION CONTROL DEVICES AND PLANTED AREAS SHALL BE INSPECTED EVERY SEVEN (7) CALENDAR DAYS AND AFTER EACH RAINFALL OCCURRENCE THAT EXCEEDS ONE-HALF (1/2) INCH WITHIN A 24-HOUR PERIOD. DAMAGED OR INEFFECTIVE DEVICES SHALL BE REPAIRED OR REPLACED, AS NECESSARY, AS SOON AS PRACTICAL. 2. REMOVE ACCUMULATED SEDIMENT WHEN IT REACHES 1/3 THE HEIGHT OF THE DEVICE. 3. REMOVED SEDIMENT SHALL BE PLACED IN STOCKPILE STORAGE AREAS OR SPREAD THINLY ACROSS DISTURBED AREA. STABILIZE THE REMOVED SEDIMENT AFTER IT IS RELOCATED. 4. REMOVE TEMPORARY E&SC MEASURES UPON STABILIZATION OF THE TRIBUTARY DRAINAGE AREA. REMOVE ALL CONSTRUCTION MATERIAL AND SEDIMENT, AND DISPOSE OF THEM PROPERLY. COMPOST SOCKS MAY BE ABANDONED BY CUTTING THE SOCK MATERIAL AND SPREADING THE COMPOST IN -PLACE. GRADE THE DISTURBED AREA TO DRAIN AND STABILIZE ACCORDINGLY. MAX WATER LEVEL 4" MINIMUM FREEBOARD PYRAMID INSTALLATION SECTION 5' AT HIGH END OF DEVICE POINTED UPHILL TO PREVENT END -AROUND FLOW 12" DIAMETER COMPOST SOCK 2" WOODEN STAKES 12" DIAMETER COMPOST SOCK THREE (3) 2" X 2" WOODEN STAKES PLACED 8' O.C. TEMPORARY COMPOST FILTER SOCK N.T.S 1 1 1 1 TIT WAACTIVE UNIT 5 ASH BASIN COAL COMBUSTION RESIDUALS SURFACE IMPOUNDMENT CLOSURE PLAN wood ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION F Wood Environment & DETAILS 2 Infrastructure Solutions, Inc. 2801 YORKMONT ROAD, SUITE 100 CHARLOTTE, NC 28208 FOR TEL: (704) 357-8600 FAX: (704) 357-8638 LICENSURE: NC ENG: F-1253 NC GEOLOGY: C-247 ISSUED FOR REVIEW SEAL SCALE: AS SHOWN DES: VMO NOT FOR CONSTRUCTION IREVI DATE I JOB NO. I PROJECT TYPE DES DFTR CHKD ENGR DESCRIPTION INCHES 1 2 3 TENTHS 10 20 30 4 5 6 7 8 DUKE DWG TYPE: DWG DFTR: VMO/ANE o) ENERGYX/ JOB ODECEMBER 118, 2019 ENGR: JBD T. DATE: FILENAME: .017 DETAILS 2.dwg APPD: JB DWG SIZE DRAWING NO. REVISION ANSI D 22"x34" C LS C9XX. 0XX. 015 ---- 1 1 9 10 Plotted By: Bell, Josh Sheet Set: 7812190194 - Unit 5 Inactive Ash Basin Layout:.017 DETAILS 2 December 18, 2019 09: 33: 51pm Q:\Duke\CIiffSide\7812190194 - Cliffside Closure Plan\Plansheets\Unit 5 Inactive Ash Basin\.017 DETAILS 2.dwg