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Home My WebLink About8106_Cliffside_ActiveBasin_PEStamp_AppD_FID1389477_202002063 4 5 6 7 8 I .001 REV .____ 0 F DUKE ENERGY ROGERS ENERGY COMPLEX= CLIFFSIDE STEAM STAT COAL COMBUSTION RESIDUALS SURFACE IMPOUNDMENT CLOSURE PLAN Old Calvary Church Rd 683 rr 9- 90, ft F aR° ca o� el �5`a 857 R P ryti J� haneYO c�5 cnrsren,eld Rd ACTIVE ASH BASIN (AAB) CLEVELAND AND RUTHERFORD COUNTIES, NORTH CAROLINA AAB DOWNSTREAM DAM STATE ID: CLEVE-049, AAB UPSTREAM DAM STATE ID: CLEVE-050 / 947R F.ow Den � Z/?, J 2I G, assY Ln� L!O �!V Cameo Dr J v r 2, / / f 915 A � n / G . p NO* \Rnr, voou 9� � r A& -f ? BROAD RIVER I ' I _ B—d Rlnr, INACTIVE UNIT 5 GJf f G r I Mcr_. 889 ft ITE LOCATION MAP 0 2000 4000 6000 GRAPHIC SCALE (IN FEET) 840 ft 1 1 � SITE ACTIVE ASH BASIN rF;, c �r �J 5Q e° .858 R 573 DUKE POWER ROAD MOORESBORO, NORTH CAROLINA 28114 S DECEMBER 18, 2019 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 INITIAL CONDITIONS .013 MAIN DAM FINAL CONDITIONS .014 UPSTREAM DAM INITIAL CONDITIONS .015 UPSTREAM DAM FINAL CONDITIONS .016 DETAILS 1 .017 DETAILS 2 PREPARED FOR: DUKE ENERGY (OWNER) 400 SOUTH TRYON ST. CHARLOTTE, NC 28202 PREPARED BY: WOOD ENVIRONMENT & INFRASTRUCTURE SOLUTIONS, INC. JOSHUA M. BELL, P.E. 2801 YORKMONT ROAD, SUITE 100 CHARLOTTE, NC 28208 PHONE: (704)-357-8600 N SITE OVERVIEW MAP 0 800 1600 2400 GRAPHIC SCALE (IN FEET) ION 0 0 0 FT] LAT: N 35.21 ° LONG: W-81.76° NOT FOR CONSTRUCTION TITLE ACTIVE ASH BASIN COAL COMBUSTION RESIDUALS wood. SURFACE IMPOUNDMENT CLOSURE PLAN 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 SCALE: AS SHOWN DES: VMO DUKECARO'�,DWG TYPE: DWG DFTR: VMO/ANI ` •'••e •S/ •' C�P': JOB NO: 7812-19-0194 CHKD: KRD 4 9 '•� ENERGY® DATE: DECEMBER 18, 2019 ENGR: JB 032667 FILENAME: .001 COVER SHEET.dwg APPD: JB ';v0' FNGINE�e ��✓�` DWG SIZE DRAWING NO. REVISION ��;S,yUA M • ANSI D 0 22"x34" CLS C9XX OXX 001 ---- F INCHES 1 2 3 ITENTHS 10 20 30 REV I DATE JOB NO Plotted By: Bell, Josh Sheet Set: 7812190194 — Active Ash Basin Layout:.001 COVER SHEET February 03, 2020 10: 55: 24am Q:\Duke\CliffSide\7812190194 — Cliffside Closure Plan\Plansheets\Active Ash Basin\.001 COVER SHEET.dwg PROJECT TYPE T 6 DES I DFTR I CHKD I ENGR DESCRIPTION — 8 9 10 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 (CFR) 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. DECANT (REDUCE FREE / SURFACE WATER VOLUME) VIA PUMPED DISCHARGE TO EXISTING TEMPORARY WASTEWATER TREATMENT SYSTEM FOR CONVEYANCE TO 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 PARTIAL UPSTREAM DAM REMOVAL AND THE OTHER IDENTIFIED ON -SITE BORROW AREAS. REMOVE THE DOWNSTREAM 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). B 4. REFERENCES 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 C 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. 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 OOV 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 TITLE ACTIVE ASH BASIN COAL COMBUSTION RESIDUALS wood. SURFACE IMPOUNDMENT CLOSURE PLAN ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION 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``N CialQO,�� DWG TYPE: DWG DFTR: VMO/ANI ` •''•E •S/ ''•C/�'� JOB NO: 7812-19-0194 CHKD: KRD 4 9 ••ems-� ENERGY® DATE: DECEMBER 18, 2019 ENGR: JB 032667 L'��s(z�+`4 FILENAME: .002 GENERAL NOTES.dwg APPD: JB 0' FNGINIE�e ��✓�` DWG SIZE DRAWING NO. REVISION �'��,SyUA M • �`�� ANSI D 22"x34" CLS C9XX.9XX.002 ---- REV DATE JOB NO. PROJECT TYPE DES DFTR CHKD ENGR DESCRIPTION I — INCHES 1 2 3 TENTHS 10 20 30 4 5 6 7 8 9 10 0 0 N F Plotted By: Bell, Josh Sheet Set: 7812190194 — Active Ash Basin Layout:.002 GENERAL NOTES February 03, 2020 10: 35: 57am O:\Duke\CliffSide\7812190194 — Cliffside Closure Plan\Plansheets\Active Ash Basin\.002 GENERAL NOTES.dwg Poo ■ A 6b L. AM—- �' AD1-01 X40 � SY-04 0 AD2-01 $ AD2-04 -� G� SY-02 i�` SY-03 SY01 AD$-(,f�D2-03 AD3-01 �. AD3-02 '� oil .46 6�OP i GWA-56D �GW GWA-56S APPROXIMATE LIMITS OF ASH BASIN FACILITY BOUNDARY (TYP.) MW-38S SEE NOTE 1 *MW-38BR / BMW-36BRU BMW-38D o o MW-36S r M• sG-17 GWA-35D -OGWA-35S *AS --2 B-2 2 �� r j iGlWi A -36-D GWA-02BRA +GWA-36S 0GWA GWA-68BRL GWA 02BRU W0S GWA 03D t4CLEVE-070 P102 95-04SOS 1A CA-U5-02D GWA-67BRL� S 13CCR- 51��+ MCCR-U5�Q� B-8CCR U5 04BR'*-. Q.CR-U5 05D r �CL"F�5-03S67BR - U5-05BR ftft* \ B-7 B-1 GWA-04S -U5-05D B-11� GWA-04D I?U5 03SA B-6CLEVE-070-P100 *CR-U5-06S 4 U5 03D ��U5404BRA CLEVE 070 P101`B-g UNIT 5 �B-5 S-20CCR-U5-06DA� / IN VklT T-?1B-13 U5-04S� �U5-04BR B 14 CLEVE-072-P100 B-3 U5-16S / AS45- Y1 � U5-102-SPT -ikU5 06,QB-12 opop Sir �or .� U5-08D CR-1-15-1 OD / U5-08SJ5 08BR CCR-U5-10S ` 4s MW-32S MW V-05 MW-3W-32BR P-13D - GWA-30BR GWA-30S GWA-30BRU / MW-30DA CCPMW-06D MW-S j +CCPMW-06S BMW-30D CCR-CCP-11 BR CCR-CCP-10DA r +CCR-CCP-10S CCR-CCP-10D DUKE POWER RD. '- ■a � /-- MW-42S MW-42D MW-42DA SITE ENTRANCE 35°12'27.37" N, 81°45'44.75" W GWA-22BRU I B-026RU l SIB-021 C-2- +IB-03S , S-6 MW20DR -GWA-22S IB-03D+CCR-IB-01S20DR _ �C-3 CCR-IB-01D �� 5 CLP-02 *S-7 _#\WAl02D1BRU 04 GWA-29D l *GWA OS GWA-21S J G A,21BRL GWA-29BR OS 12 , -\-6 APPROXIMATE LIMIT SI13-0413R -AS 02D4• S-22 �\ SEE NOTE 1 i> IB-04D -GWA-12S AS02D-02S \ MW-11BRO GWA-14D 1 GWA 12BRU � AS 02BR �GWA-28BV D 4 �MW 11DA GWA-14�GWA-14BR LIB-04S-SL AS-08S GWA-28S� $D-5�� GWA-14S AS 08BR CLP-01 GWA-2 BI AB-01D BMW-11BRL OS-9 CLMW-02 �y,,, #AS 03BRU A 64BRLD-2 AB-01BROR _ MW-02D AS 09BF4�AS 05S *GWA -03BR�,�D 1 �yMW 11S -GWA MW-02DA '-AS-ASAS-09D AS-05BR '� / CCR-17BF #GWA-38D - D-3 AB-01S AS-05BRU SAS-071 CLMW-05S ' AS-07BRL AS-07BR SAS- 7BRA AS-07S AS-07BRB OL GWAwj �� 1 W GWA-54S #GWA-54BRO LAS-07D A AS-0 + GWA-54D "A S 06BRA ' ASH STORAGE AREA 1 ` (SEE NOTE 2- A-1 SAS-04S CC I04D `� ..�„i CLMW-03S%AS-04D -MW_2 GWA-62BR- _ #GWA-59BR CLMW-03D $AS-018B ASH STORAGE MW-10S MW-21+MW-211 GWA-59D *MW-10D GWA-62BRU '� AREA 2 CCR-05D —GWA-57BRU (SEE NOTE 3) • � l GWA-57S - -GA 33E-GWA - GWA�8BU G/W6 -6 , R?GWA-51D �` CCR-07S CCR-06D ` R ��W3GWA558S WA -A �� CR 06SGWA-33D GWA F iCLYWU� ` / ` GWA-2 GWA-39- S-14* r-U-4CCR-OD GWA-61GWA-43D 1-0 -01 U-1 *GWA-61BRU GWA-43S- S-150S- o a R yam- � MW -23DR RUTHE- 5 GP101 _5 4 �\ ; AAB-102-SPT -� �# � •j *� GWA-44S MW-23S S-16MW 08S� -AB-02SR0 `� CCR-0$$BR *AB 0 SBR / GWA-608RU GWA 446R MW-O8D� �AB-02D CGk-O8D AB-07BRU / -GWA-601313 GWA-44D � CCR 1D�U 2THE-050-P1 AAB--101�5 1� AAB-102-CPT �j CCR 1 AAB-101-CPT AAB-104-CPT j-- AB-086 R CCR-12 i�U-7 AB-03MA15 AB-08S AB-03BRU ��AB-03SLA ` CCR-12 AB 03S 15 AB-09BR l AB-031� AB-09D AB-03BR AB-09S rya r IWP/66BRL-\ AB-03BRA r \ AB-03BRUA AAB-103-SPT / V \ AAB-103-CPT U 10 AB-04UA15 1 $CCR-13D �\ ACTIVE AB-04SL ASH BASIN AAB-04BR AB-04S ` AB-04LA15 AAB-106-CPT ` - � AAB-104-SPT ` a. 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A\� \ / / / / �/� / �1 �/ /� =i �� — — vvvvv � — —J11 \� \ ( ` / / / /�— — — — i— — \ \ \ \ \\ \ \\ \\\\\\/�/� l �I �_ — �/ /i/ // / / // // 16 ; ;_ __ —_--// \, - // / / // / �/ /, / / /� ////// _ -- '� 1 1 J l 11 111�1 �_\\ \ �� Ood. ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION F X/ x x —X k� \ ��%/� / /� l ��///j/�l //// // //%� %�i� ,90 �I ( lJ \\ /`�_�%�///�// /� \ /// ��\\\�\ 11 �/ / J C7 �// /% — — // // (l /� / / —% /_ ,W / / //�/// ///� —� ,Al, i i , !/1�// �)11 ] F \ 'I i / / / ' /////I / %==� -- /, (/Ill ////�i/%ice _ _ _ I��r��/ / `-/i// / �J f 1 // _ � _ //, _ _- � - - \ 1 \ / % / / / / / / / / / = �i Wood Environment & ((1/////// -- i _ / I��\ / /7� -APPROXIMATE LIMITS OF CCR BOUNDARY (TYP.), /� - �� EXISTING CONDITIONS PLAN - \ I / ///�/ �ii 4` \ // III // /'/ ///•�0�/ i //! ` \ ( / \�� l / � i of r ... oYi / // -ii �_ / I / // `\ I // / \ \ III / / / / / /��/// /r _ \ / Infrastructure Solutions, Inc. I ' // / /, � /� / / I �/ ////j o_�_ ` %i �i ! i \ O / 1 /' o art �i 1 / - / _ J II / // / / / �� \\ " / / / I J // // // i,19 \ti` _ _ % / \ 1 J L - \\ \ \\ I I 1 / / / /� / // / / / i- \ 1 I I IIII / ( ti i \ 0 1 ( ( / -�� - —i�j %-/ 2801 YORKMONT ROAD, SUITE 100 IJ 1 /%� �� \ - � l / //// // //iio� _\� ::/ II (/ / /// / ` 11 o r� I / n) o / i IIII / I - // �� / \- - I I( / //�/////////o - J �/^ )( / / / _\ \ \\\ J I I / , / / /// /// /// / / / \ �O \ om 1 J I I� \ /^ 1 /- -IIII CHARLOTTE, NC28208 FOR / \ \ - ' / / / \ \ I I \ / l I / ' / ,jj TEL: (704) 357-8800 FAX: (704) 357-8638 ISSUED FOR REV I E W _lI / l III / / / — --i//, l //�// // / / // - - vv � — �I 1 I l l ((� V� V / / / / / / \ � 1 ) / o / / /iii \— I / // -� �i \\ I I / // // o m 1 I l o/ ///// / I M / ( J/ IIII I / / �\ \ / /�/ // /// /////// /% 810 , , _ � � \ J I I \ 11I I 1 J / / // / / / / / \ \ \\) \11 I I I ( �� J J J / / ///-�-�,-�- / LICENSURE: NC ENG: F 1253 NC GEOLOGY: C 247 I � r] - --� � , I l // I l / v _ l \ �j�///�/, //�//�%�/?0/ z � _ vv \� ( I 1 ! I � 1'_ - /� VA\ V I / / // I I / / / /o////sEAL I I ICI IIII , i /// , II �� , / , , - , �� d _ _ _ A \ / _ l -- \ \ \ \ \ \ � /�/ � `� \ \ 1\ �DUKE SCALE: AS SHOWN DES: VMO NOTE: ,- - _ - -- -� \ \ 1 1 �-' / `��i�ir��,�� 1. THE "APPROXIMATE LIMITS OF ASH BASIN FACILITY BOUNDARY" AND THE "APPROXIMATE LIMITS OF CCR BOUNDARY" ARE BASED ON AERIAL PHOTOGRAPHY, __/ ` _ = � \ \\ \ \ 11 1 _i � / 1 ) I I I ````� CAR ��fi� r DWG TYPE: DWG DFTR : VMO/ANE TOPOGRAPHIC MAPPING, AND OTHER HISTORICAL DRAWINGS AND INFORMATION AND SHOULD BE CONSIDERED APPROXIMATE. THE "APPROXIMATE LIMITS OF � _ 820 — \\\ \\ \ \\ \ \\ \ - - / - _/ / J / 1 I �C `. •. • ...0 / ASH BASIN FACILITY BOUNDARY" INCLUDES THE CONTAINMENT DAMS AND DIKES WHILE THE "APPROXIMATE LIMITS OF CCR BOUNDARY' EXCLUDES THOSE / � - - \ \ _ \\ \ \\ \ \ � _ � - / / / I E S� �'` 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. / /� :��--, \ \ \\ \\\ \ \\ \ _ - \ \ / / / / 9 ' � s.� E N E ��Y® IT SHOULD BE NOTED THAT THE DETERMINATION OF THE ACTUAL LATERAL EXTENT OF THE CCR MATERIALS WILL TAKE PLACE PRIOR TO, AND/OR DURING, / 53 \ \ / : 4 DATE: DECEMBER 18, 2019 ENGR: JB / // \\\\ \\\\ \\\\\ i // / /// IMPLEMENTATION. / / \ \ \ \\ \ \ \ / / �� = f 2,•�fg Z,nt4 2. EXPLORATIONS PERFORMED IN ASH STORAGE AREA 2 INDICATED NO PRESENCE OF ASH, THEREFORE ASH STORAGE AREA 2 IS NOT INCLUDED IN THE ASH BASIN I A 1 ( �\ \ \� \� \ I I (i / //� // //� _ 032667 �- FILENAME: .005 EXISTING CONDITIONS- TOPO.dwg APPD: JB CLOSURE PLAN. \ ` i) �� \ �\ 1 _,/ / % / / / �(/r - / Q+: V \ \ // \\ \ I //// \\ v •' F/�GIN�� . !'� DWG SIZE DRAWING NO. REVISION REFERENCES: \\\ / / / \ \ ) I 1 ) / / / / /// \ O �cj 1. ASH BASIN FACILITY BOUNDARIES, BORING LOCATIONS, PIEZOMETER LOCATIONS, AND WETLAND AND SEEP LOCATIONS PROVIDED BY DUKE ENERGY. \ \\ _-� ///� \ ) / Sy i 2. EXISTING TOPOGRAPHIC INFORMATION WAS PRODUCED FROM PHOTOGRAMMETRIC METHODS FROM AERIAL PHOTOGRAPHY OBTAINED ON JULY 31, 2015 BY WSP \ �\\ � _ j /�_\ � I / 1 I I 1 / / / / //// / � ��i * UA M;`` �`�` ANSI D C L S C 9XX . OXX . 0 04 i \ \ � _ ieii�� 22"x34" ---- \\\ �� ___�_ -� l I I I I I (( 11(I� \\\ � REV DATE JOB NO. 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l \ I I I I I� / / / /iiri / - - - r // / 1 r I I / /// / / / Infrastructure Solutions, Inc. \ \ 0 ) / _ �� Vv\ w 1 _% // / /' /i� // l I I // / AVAV/ /+ �/ / / vVAVAVV GWI \ \ \ _ i� i� /— i // //// / % /// �0 740 ��/ / �/ // ! (l I I I I I I 1 III /// //// / l l / / 2801 YORKMONT ROAD, SUITE 100 - �\ % ��-r r r - - --_- -�i G q� i \��\ G A, \ �\\\�\� _-_-_- ��o �i\�/� I _ / / /� // I I l / // ///l/ �llo � . I 1 I u /; =— u� _-- //,��s A��V I ii/ /i/ s S ) �� ' � —� / /.�"%*j// / / /l , — f // // / l�l l l l / l I l I I / / I / / / / CHARLOTTE, NC 28208 FOR \ p _ = —/ � / / ///%//Z�� / /� / — --1 / / /// Il l I f f I ( I(I / / / coy TEL: (704) 357-8600 FAX: (704) 357-8638 NOTE: i/ GWA-42S \\ // / / % ) I I I / l / / / 1. THE "APPROXIMATE LIMITS OF ASH BASIN FACILITY BOUNDARY' AND THE "APPROXIMATE LIMITS OF CCR BOUNDARY' ARE BASED ON AERIAL PHOTOGRAPHY, }) - , / / �// / j� j j ��' ( \ J J f / /// /// / /// /l I I I 1 IIII 1110� cp 1 1 I / / a� f ((I uCENSURE: NC ENG: F-1253 NC GEOLOGY: C-247 ISSUED FOR REVIEW TOPOGRAPHIC MAPPING, AND OTHER HISTORICAL DRAWINGS AND INFORMATION AND SHOULD BE CONSIDERED APPROXIMATE. THE "APPROXIMATE LIMITS OF _ l \ // / \ I - - - //// / / I i / I to Io �, o \ l ( SEAL SCALE: AS SHOWN DES: VMO ASH BASIN FACILITY BOUNDARY' INCLUDES THE CONTAINMENT DAMS AND DIKES WHILE THE "APPROXIMATE LIMITS OF CCR BOUNDARY' EXCLUDES THOSE / i I t1kt l l fill,, STRUCTURES AND IS BASED ON UPDATED TOPOGRAPHIC MAPPING, REPORTED OPERATIONAL LEVELS, AND SUBSURFACE DATA COLLECTED WITHIN THE BASIN. ( I ` \ __,.\ / /� � %`�` CAR ''�� DUKE DWG TYPE: DWG DFTR : VMO/ANE IT SHOULD BE NOTED THAT THE DETERMINATION OF THE ACTUAL LATERAL EXTENT OF THE CCR MATERIALS WILL TAKE PLACE PRIOR TO, AND/OR DURING, GWA- \ l (_�r `` O \ �GW 43 \/ IMPLEMENTATION. 33S\ l \ \ / ` •'••E S/ �'•`��% JOB NO: 7812-19-0194 CHKD: KRD 2. GROUNDWATER CONTOURS SHOWN ARE BASED ON MODELED EXISTING CONTOUR INFORMATION PROVIDED BY SYNTERRA (2018). 33BR '' 1 / \ \ / • . 9 1. �_ ENERGY® ,/ / / _ : 4DATE: DECEMBER 18, 2019 ENGR: JB 33D � r REFERENCES: - \ \ / - ��,/�a �,ntQ 1. GROUNDWATER CONTOURS SHOWN ARE BASED ON MODELED EXISTING CONTOUR INFORMATION PROVIDED BY SYNTERRA (2018). - I / // 032667 i �- FILENAME: .006 EXISTING GROUNDWATER CONTOUR MAP.dwg APPD: 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. _ \\� 1 I // / :CVO • cc/�,GINE, Q:.* `: DWG SIZE DRAWING NO. REVISION 1A�-� R ( / / i� CSC �% M I / .., tJA ,Mt`t,"` ANSI D l99 \\ / 22"x34" CLS C9XX.0XX.005 ---- �\\T �1 REV DATE I JOB NO. 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/ �/ �v�v ��=-_vvv\vim ° a20 Rc // 1 ,8v //�j/ //�iii /i`////i��-- \vv\\ \ \ �V�\VAVA�_%� A Il �i�� - / / l \\ /� I _ / /�/ vv�� IIII // I A I I 11111 / / v�A �Avvv�� _ v \ / //�i Oii/ /// /� \ V \ �,,_ 1 1 l l - - - - - _ - /�ti �/� / ��- \ / / / // III / \vvv - v yv y\ 2 c �/ / v �/ ////// /� ��7so- ��v v\\\ \ / 1 \ �� — I1 I�I1) I I - - TITLE rii//c�cR-�� ii \� w / III \I I IIII/ // w� �� — yv G A o �; _ /��/�/////�// /i///i/i/ �i _Av \\\\� A I III ACTIVE ASH BASIN COAL COMBUSTION RESIDUALS \ / /y�r I %//�� wv 1 i / / �/ I I I I � /� A / / A v — — y \� /, — --�i // I ilV /�/� //� _ yA� ��-- v 0 I / � I 1 1111 III / //� //�/� �\ // III�� II I I/ I / / / / / , /� �`�� vy A� _ �v`\ yv �� v // _ 770 — — '�/ //// /// / //�� _� _ _ ---- y I v I 1 1 I — SURFACE IMPOUNDMENT CLOSURE PLAN �v // /%/ �°// 1 / / / / l I� I / l \ / ` 5 S cvu�- \ " o- 101 / / - // / / //// /�//� - v\ V �� 1 IIII I I I 1 I I I I /i = = \ / 1�1 IIIIII \vv /� ��_ 770-EE \p / l �s t l (I // o /��//� IB-02s SL \ 1 / l I III l / �/ �w� � v \ v v / < _ / _ _ _-= % o�///// // /i/� _ -__ __ A\\VAI I �/ ll II( // /i IB o2AL \�� \VAV� /j�/ /�/ G I I I111 I / /ram= ��'/ / / v0� v`v��,,,�A-ass v v vv w v�� / /eon-12 , i�NP /l�i� // �i� - = - - v \ VIZ V I l 1 I I I I III I I I I I I I // woo \\\ \�1 ll((1 v - / / ( 11 1 (""�`/� // ///`//� % -780 - �v \�V /// / I I I 1 I III �I(1 / _ ' ROGERS ENERGY COMPLEX -CLIFFSIDE STEAM STATION F \\ v \� / IIIII ( /// �— _ / - \\ s-1a• - v \ GWA-ll j/- ; ��/ IIII // / - _ �V \\\VA \ V I I I I III I I f %//-\\\V\\ ��\ / v v vim% �\\,�A(I(ll I ///Aii / 0\v VA 51 vvv vvv �- --� %�=/��/�//11///��i�j/�j� - --- �� III�\\V \ / �II II I I IIIII II / IIII\ V\ �\ GWA �9 IIII V\vv = / III I / /11 / �� / l�w� • -1 � \v v� � / � %!� %// // �ll �l//// % / - - 7so = �) I I 1 11 \ I 1 I I I I I / / f I 1 I I i �r \\V \ 1 0A �� / A V/////I/� v \�V�\� - - / A\111 1 ��7 l r / -/�� / // /�// /% / // - - �l/I�/l Ill II )\ 1 1 I I t I I I l III / ////)I/I�/ �, Wood Environment & \\\\�\�\ V\ \ �_8 �� vvv\ / / /� yv\ / Ih v i(( // // IIII/ I l /� - - _ �� 11 �l �I I 1 I 1 / / / / / ESTIMATED BOTTOM OF ASH CONTOURS \\\\\ �\ \ %i \ / �\ _ III 1 �iiii l Il I 1 // _ - // /// 1 I111 ) I I 1 ///// / / \�\ V� �\ ) I � v�� - - / _ _��ll/ l �i/�� \ �� vv�� - IGwI l II III `� 1 �� /� //% iii�ii�/�i/ Il 1// /� /� / ///Ill / II \ IIII I I IIII II11//// /i�// /l ll l l / Infrastructure Solutions, Inc. \�� / / l /\�� _ —_ �/ - -�/� / / / f �V /O Oi/� / / // //// �/ / / / / // / (( I I I / / / 2801 YORKMONT ROAD, SUITE 100 r _ _ _-�iG - / IIIIvvv G A� v 1A\ V �� ///// ///j / /� I ( s / // �/ // // I I // \ / / �� (IIII 0011 1 1 I I // ��A--- -- — __- — _ —�_==_ - f/ ( �� i \ �j� / ��\V\�- /208 / �/ J \ 1 / 1, ME": = = i ' A �V %/�/�/, W % j /l/ A _ J / /�/// // l \ll�I l l I I I I I I I(�l /// �/ to l I I TEL: 704C 57 8 OOTEF X2804 357 8638 FOR __� tl I ( �___-===�-=_ ( / V1// v Ltd/i/////\GWAa2s \ f \\�- _ - �/ '�v iii/�/iii�i�� / /( \--(/��// l // 11 / I 1 I I I I I II�(I I(� // N > �+�+p�n��l I) ��'-A'V� / = — � �_ - �i/ l 1 / ))II \ ///%j/j�/ ) � / // A \ /��/ / j /�� I \ �J ( / / /// /// /// // ( I 1 I I �II I II o cPl I i� / /a� I ( ( LICENSURE: NCENGF-1253 NCGEOLOGY:C-247 IJJUED F�R ftEVIEVV-__ _ yv��v ��, — , \- / -1( 1, ) I ,i/- l � v / / / II (�/ I to ,p o v ( (11 — _ _ �\\. _ ��„ l / — I f ,r /, _� I l 1J / , , W/�///// �/ — _ /t � — — SEAL SCALE: AS SHOWN DES: VMO NOTE: at �/�� \ / - ``%%I�tir��1. THE "APPROXIMATE LIMITS OF ASH BASIN FACILITY BOUNDARY" AND THE "APPROXIMATE LIMITS OF CCR BOUNDARY" ARE BASED ON AERIAL PHOTOGRAPHY, I//�/ `\ GWA-43\D ` ``,%' CAR �� DUKE DWG TYPE: DWG Ill VMO/ANE TOPOGRAPHIC MAPPING, AND OTHER HISTORICAL DRAWINGS AND INFORMATION AND SHOULD BE CONSIDERED APPROXIMATE. THE "APPROXIMATE LIMITS OF /// // \ *GWA-43S s ASH BASIN FACILITY BOUNDARY" INCLUDES THE CONTAINMENT DAMS AND DIKES WHILE THE "APPROXIMATE LIMITS OF CCR BOUNDARY" EXCLUDES THOSE �// � 40'GWA-33S\ \ \ -- / � S� `�� . JOB NO: 7812-19-0194 Cl KRD STRUCTURES AND IS BASED ON UPDATED TOPOGRAPHIC MAPPING, REPORTED OPERATIONAL LEVELS, AND SUBSURFACE DATA COLLECTED WITHIN THE BASIN. GWA-33BR - \ I -- / r - ENERGY® IT SHOULD BE NOTED THAT THE DETERMINATION OF THE ACTUAL LATERAL EXTENT OF THE CCR MATERIALS WILL TAKE PLACE PRIOR TO, AND/OR DURING, \ GWA-33D / r / 2 DATE: DECEMBER 18, 2019 ENGR: JB IMPLEMENTATION.. - - \ 1 / _ / <�\ J = — — � I / / / _ 032667 f 2.r��f Zn`4 FILENAME: .008 ESTIMATED BOTTOM OF ASH CONTOURS.dwg APPD: JB L ` I /i . REFERENCES: \� — \\ 1 //// ^%v - AIGINE� * 'r; DWG SIZE DRAWING NO. REVISION � ��\-� / - �� / o 1. BOTTOM OF ASH CONTOURS TAKEN FROM AMEC FOSTER WHEELER, WASTE STRATEGY ANALYSIS, CLIFFSIDE STEAM STATION, APRIL 17, 2015. � ��\� �1d11A�-� DR ( /// / �� C L. n �j �. 2. ASH BASIN FACILITY BOUNDARIES, BORING LOCATIONS, PIEZOMETER LOCATIONS, AND WETLAND AND SEEP LOCATIONS PROVIDED BY DUKE ENERGY. \\�\�� p D ///// // �i�1� 7C�A `v`' `�� ANSI D 3. EXISTING TOPOGRAPHIC INFORMATION WAS PRODUCED FROM PHOTOGRAMMETRIC METHODS FROM AERIAL PHOTOGRAPHY OBTAINED ON JULY 31, 2015 BY WSP. (� \ �~\ \ - _ Mywi� \ //"/ `` ��f �� 22"x34" C LS C9XX. OXX. OO6 �� "\\ / //// REV DATE JOB NO. PROJECT TYPE DES DFTR CHKD ENGR DESCRIPTION INCHES 1 2 3 TENTHS 10 20 30 Plotted By: Bell, Josh Sheet Set: 7812190194 - Active Ash Basin Layout:.008 ESTIMATED BOTTOM OF ASH CONTOURS February 03, 2020 11: 02: 04am 0: \Duke\CliffSide\7812190194 - Cliffside Closure Plan\Plansheets\Active Ash Basin\.008 ESTIMATED BOTTOM OF ASH CONTOURS.dwg 7 8 9 10 780 0 Lo t 0 ..woo, _... 1 c , r _ y III I I �_ _ _� _ / I� /�<< < �• _ ��,� , � .� w N/ RPM gig \��(l w - // 0\\` - � _ -_ _ - ��` / F � _ ' � '• • �,r,�,. : ;ry , V - ,• �� .�.�� `.� ,., , .; . � . • .. ' 7 I I III/I I�� - �� J \ /� % i — � —��\_= 5 llllllllll ill •• er— _— , . �- /.j + �,`��; N:;t.A .X.'�^: .,.*. • • • � �� —_ —=%----.._- v\�� Ill � ��I(JJ�/%/�l, � y �\v\V0) • i w�i�/ Ilk r , ' • 1pmwlAND PUMPING BUILDINGti EXISTING DEWATERING I .r�T " DEMOLITION N•` �� III II 111 .LOCATION 1 I •' f ' 10 J :.low ® I `1 • , ® il, i (� �( :n O h � - a ;b O CQ2Q x t // —�\ �� ✓� / t 7u o 790 _ +. o k �— i , IVI E o� 60 e, , a Q s Y. P Y a 4 '�.•. ' �.:Y» ze. i-�- - •••1 > i '�' � K tih.y .+.'<..:<. y '.p � ,�a� 'A. r 'fir �r+':'.'. 1. 3 ..-: :.� •. / � � r"r;w;tl� ' � "y` ,u 9'�R• 'S � �"k5� '*y v-K '` :#+�' "*�' M A / - :•' ' • ui3 y TITLE E ACTIVE ASH BASIN COAL COMBUSTION RESIDUALS I SURFACE IMPOUNDMENT CLOSURE PLAN wood* ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION F— - F r Wood Environment & DEMOLITION NOTES: �: ` ` c 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 In DEMOLITION PLAN µ Solutions, Inc. Infrastructure S DEVELOPED PRIOR TO CONSTRUCTION. \\ o 0 0 0 2801 YORKMONT ROAD, SUITE 100 2. EXISTING ABANDONED 3. DEMOLISH ACTIVE INTAKE OOP OF EXISTING ASH. CHARLOTTE, NC 28208 FOR ISH EXISTING OVERFLOW SPILLWAY ONCE ASH BEEN REMOVED OR GRADES REACHED AN ELEVATION TO CONTAIN BACK TO BACK 2 FULL PMP EVENTS WITHOUT SPILLWAY F '`� ^ ^' oo ^o \ I.,Y o 0 ACTIVATION. RCP PIPE SECTIONS AND JUNCTION BOXES MAY BE RECYCLED OR REUSED WHERE POSSIBLE. STOCK PILE STONE FROM GABION SECTION FOR REUSE. \ % c ' . LICENSURE? NC ENG6F�125NC GEOLOGY: ISSUED FOR REVIEW 4. DEMOLISH EXISTING CHEMICAL STORAGE BUILDING ONCE ASH HAS BEEN REMOVED OR GRADES HAVE REACHED AN ELEVATION TO CONTAIN BACK TO BACK (2) FULL PMP EVENTS WITHOUT SPILLWAY ACTIVATION. SEAL SCALE: AS SHOWN DES: VMO DUKENOTE: ( %0CARO�'�,o DWG TYPE: DWG DFTR: VMO/ANE 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 l E •S/ �` JOB NO: 7812-19-0194 CHKD: KRD 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 l =a ENERGY® 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 Q DATE: DECEMBER 18, 2019 ENGR: JB DURING, IMPLEMENTATION. / 032667 �2'r��f�`"4 REFERENCES: v..•• � �P .: v`` FILENAME: .009 DEMOLITION PLAN.dwg APPD: JB NGINE.• DWG SIZE DRAWING NO. REVISION 1. BORING LOCATIONS, PIEZOMETER LOCATIONS, AND WETLAND AND SEEP LOCATIONS PROVIDED BY DUKE ENERGY. / Q • • e 2. HIGH RESOLUTION AERIAL IMAGERY DATED DECEMBER 2011 WAS OBTAINED FROM WWW.ESRI.COM. . „ 3. EXISTING TOPOGRAPHIC INFORMATION WAS PRODUCED FROM PHOTOGRAMMETRIC METHODS FROM AERIAL PHOTOGRAPHY OBTAINED ON JULY 31, 2015 BY WSP. - '�,+�4s/�/UA',1v````��` ANSI D 4. 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 22"x34" C L S C 9XX . 0XX . 0 0 7 ---- ANALYSIS, CLIFFSIDE STEAM STATION, APRIL 17, 2015. 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, I /X x� \ ghGWA-43D ` ` \ \ r� `- r� — `,`,%" C'Ar7 O 'fl, 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 %/ // 1-1 GWA-43S / ASH BASIN FACILITY BOUNDARY" INCLUDES THE CONTAINMENT DAMS AND DIKES WHILE THE "APPROXIMATE LIMITS OF CCR BOUNDARY" EXCLUDES THOSE '/ � GWA-33S\ \ -- \ / / ...'••E S/ •... j �: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. / xGWA-33BR —\ ) • . 9 ' ENER%f"1.-7**v1 RIT SHOULD BE NOTED THAT THE DETERMINATION OF THE ACTUAL LATERAL EXTENT OF THE CCR MATERIALS WILL TAKE PLACE PRIOR TO, AND/OR DURING, \\ o GWA-33D — \ ) ` -- ,/ _ = 4 _O DATE: DECEMBER 18, 2019 ENGR: JB IMPLEMENTATION. (Z,�(S ZAt4 2. EXPLORATIONS PERFORMED IN ASH STORAGE AREA 2 INDICATED NO PRESENCE OF ASH, THEREFORE ASH STORAGE AREA 2 IS NOT INCLUDED IN THE ASH BASIN \ \\ I \\� — — \L L l / / / _ 032667 �- FILENAME: .011 EXCAVATION PLAN.dwg APPD: JB CLOSURE PLAN. _ -� ` — REFERENCES: \ %�- — \\� � l �// / ';v0' �NGII ��` DWG SIZE DRAWING NO. REVISION 1. ASH BASIN FACILITY BOUNDARIES, BORING LOCATIONS, PIEZOMETER LOCATIONS, AND WETLAND AND SEEP LOCATIONS PROVIDED BY DUKE ENERGY. \ \� \ -� R /Q//' "'I,',- 7tJ • • M • 1%%� ANSI D 2. EXISTING TOPOGRAPHIC INFORMATION WAS PRODUCED FROM PHOTOGRAMMETRIC METHODS FROM AERIAL PHOTOGRAPHY OBTAINED ON JULY 31, 2015 BY WSP.\ \\ I ///I �i A �t 1-1 \�~ �\ M l� \ / � _ ��fei�r'tttt` 22"x34" CLS C9XX.OXX.008 ---- \�� / REV DATE JOB NO. PROJECT TYPE DES DFTR CHKD ENGR DESCRIPTION — �_ INCHES 11 2 3 TENTHS 10 20 30 4 5 6 7 8 9 10 Plotted By: Bell, Josh Sheet Set: 7812190194 - Active Ash Basin Layout:.011 EXCAVATION PLAN February 03, 2020 10: 41: 19am Q:\Duke\CIiffSide\7812190194 - Cliffside Closure Plan \Plansheets\Active Ash Basin\.011 EXCAVATION PLAN.dwg M11 REV .____ 0 C F 795 790 785 780 775 770 765 760 755 750 745 740 735 730 725 720 715 710 705 700 695 690 685 680 675 780 775 770 765 760 755 750 745 740 735 730 725 720 715 710 705 700 695 690 685 680 675 670 665 660 655 650 SECTION A -A 795 790 785 780 775 770 765 760 755 750 745 740 735 730 725 720 715 710 705 700 695 690 685 680 675 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 o L0 o Lr) o LO o Ln 0 Lf) o Ln o L0 o L0 o LO o L0 o LO o LO C) L0 o L0 o Lf) o Lf) o Lf) o LO o LO o L0 o Lr) o Lr) o Lr) o Lr) o LO o LO o LO o LO o L0 o LO o LO o LO + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + O C) N N CO CO It � LO LO (O (O ti ti 00 00 0) CY) O O N N M CO Lr) Lr) (O (O ti � 00 00 M M C) O N N M M M M (O (O ti ti CO CO M M O C) SECTION A -A 780 775 770 765 760 755 750 745 740 735 730 725 720 715 710 705 700 695 690 685 680 675 670 665 660 655 650 O O O O O O O O O O O O O O O O O O O O C) C) C) C) C) C) C) C) C) C) C) 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 O O O O O co LO O LO O LO O LO O Ln O Ln O Ln O Ln O LO O LO O LO O LO O LO O LO O LO O LO O LO O LO O LO O LO O LO O LO O LO O M O M O M O M O M O LO O LO O LO O LO 00 + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + N N M M It It LO LO (.0 (.0 I'l- I'l- 00 00 0) 0) O O N N M M � � M M (.O (.O ti ti CO CO M M CD O N N M M It It M In CO CO rl- I'l- CO CO M M O O N N N co co co co co co co co co co co co co co co co co It It It It It It It It It It It It It It It It It It It It LO LO LO LO LO LO LO LO LO LO LO LO LO LO LO LO LO LO LO LO (O (O (O (O (O (O C0 SECTION B-B SECTION D-D SECTION E-E 810 805 800 795 790 785 780 775 770 765 760 755 750 745 740 735 730 725 720 715 710 705 700 790 785 780 775 770 765 760 755 750 745 740 735 730 725 720 715 810 805 800 795 790 785 780 775 770 765 760 755 750 745 740 735 730 725 720 715 710 705 700 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 o m- O L0 O L0 O L!) O LO O LO O Lc) O LO O L0 0 L() 0 L() 0 L0 CD L0 CM + + + + + + + + + + + + + + + + + + + + + + + + ++ O O N N M M 'It 'It M LO (0 (0 fl- fl- 00 00 0) 0) 0 0 CXN SECTION C-C 790 785 780 775 770 765 760 755 750 745 740 735 730 725 720 715 O O 0 O O O O O O 0 O O O O O O O O O O (0 O Lf) O L0 O Lr) O Lf) (D L0 CD Lr) O Ln O LO 0 LO O L0 00 + + + + + + + + + + + + + + + + + + + + + N N M M cF cF LA LA ((] ((] 1�_ 1�_ Of5 07 ('S) M M INCHES 1 2 3 ITENTHS 10 20 30 795 790 785 780 775 770 765 760 755 750 745 740 735 730 725 720 715 710 705 700 695 690 685 680 675 670 665 660 655 795 790 785 780 775 770 765 760 755 750 745 740 735 730 725 720 715 710 705 700 695 690 685 680 675 670 665 660 655 O O O O O O O O O C) O O O O O O O N O LO O LO O Ln C) LO O LO CDLO C) LO C) U) O co + + + + + + + + + + + + + + + + + + O O N N CO CO � � LO LO C0 C0 Il- rl- 00 00 REV DATE JOB NO 775 770 765 760 755 750 745 740 735 730 725 720 715 710 705 700 695 690 685 680 675 670 665 660 655 650 775 770 765 760 755 750 745 740 735 730 725 720 715 710 705 700 695 690 685 680 675 670 665 660 655 650 0 0 0 0 0 0 O 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 C N 0 LO 0 LO 0 LO 0 LO 0 LO O LO 0 LO 0 LO 0 LO 0 LO C + O+ + + + + + + + + + + + + + + + + + + + + O O c- N N CO CO �t �t Liz Liz (0 (0 rl- rl- 00 00 0) 0) O O SECTION MAP VVr\L L. 1 — JVV 0 0 0 M c 1 1 0 1 1 0 M TITLE ACTIVE ASH BASIN COAL COMBUSTION RESIDUALS wood* SURFACE IMPOUNDMENT CLOSURE PLAN ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION F Wood Environment & EXCAVATION PLAN PROFILES 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 DUKECARO'�,,, DWG TYPE: DWG DFTR: VMO/ANI ` •''•E •S/ ''•Cz�'� JOB NO: 7812-19-0194 CHKD: KRD 4 9 '•� ENERGY® DATE: DECEMBER 18, 2019 ENGR: JB 032667 FILENAME: .012 EXCAVATION PLAN PROFILES.dwg APPD: JB 0' FNGINE�e ��✓�` DWG SIZE DRAWING NO. REVISION yUA M • �`�� ANSI D 22"x34" CLS C9XX.0XX.009 ---- PROJECT TYPE DES DFTR CHKD ENGR DESCRIPTION 6 7 8 9 10 Plotted By: Bell, Josh Sheet Set: 7812190194 — Active Ash Basin Layout:.012 EXCAVATION PLAN PROFILES February 03, 2020 10:42: 11am Q:\Duke\C1iffSide\7812190194 — Cliffside Closure Plan\Plansheets\Active Ash Basin\.012 EXCAVATION PLAN PROFILES.dwg .010 I REV .____ /—\ ��6 � / /— \'-, \\\� -- ^1 \`1�III,1111)IIII'II1IIIIIII -// �111 1 \ I \ \ I III II I /� / II 1 / 11 1 / I I/ I I \ I I /�I I v \ \ 1A 1 v \ \ \ I I\ �ll �llll lTllll \/ v\A \ 1 I I \ V� I I I I I I/ �I // �/ //////%///// /// / \ 1 \ ` I I �/-- % �ii/////�///�///�l/� /�� / — \\ \ IIII / /�� //// «< v V AV \ v l I I I I I ((� /i/i/(� �/« �� v I1 (� ��\\ \\ \\ /�\\\\\\\\\ \\-,/ / / III IIII11\ «\\\�\\��\\\\\ \\ \ /// Jl I 1 \�� \\ \ \` \\\\\\\\\ \� :1 \\ \ \\\ \ \� /ii /// / I ) 1 \ \ \\ �\\ \ \\\ ---\ \\\ \\\\�-/%/////�/ /� ) \ \ �111 IIIII 1:, _- \\\\ \\ --%� ��,, / 1 \' 11 \ \\ 1111 I II III I - \\ �-- �— =—= ��/ !; = -- ) / I III III IIIIIIIIIII IIIIIII II !��`v�� _ -/i%�_ __� / / / III IIIII IIIIII v___ / /// III IIIIIIIII Illlll y / �l 111 �II I I IIIIIIII = = =---� ,//1 II IIIIIIIII IlJill l �_ - � = _ ( ,__ _ �40 ' / Illlll 11 /IIII 11 _ /Jl�/ IIII IIIIII �Id — / 1 73p\ —, //� %/%/ III( IIII - �-�- _ _ / - _ //i//�� /�111111 I = �-�; vv 1I - /,IIIII 141I �\ �� _ _/��/�- - = — \\\ Qo\\\ \\\\ �/ IIII —/i// �� \ \ \ \\ - '///'% j/��, = _ _ ;�� s°�\\��\\� I III 11 / IIII II \\ ; // // % _ �j60 \ \\\\ \\\\\� \\\ �\`, II�� IIIII II :�� -:�?90 —W�\\\, \ v �� l �� (\i/I vvvv \vv\AVA\�\\\\\\\ \\\\\11�1111\\\�VA�IfI Z l `t \ Bop \ 1\ I III\ \\ \\\\\III III \ 111 \\IIIII / Ill // /// ) / I l I I \ i o ✓//IIIIIIIII IIIIl,l1\11\ \\1 1 I III�III111\II\\IIIIIIII II 1 II l / \-/ tio\ \\ \\ \ %;\\�\v/IIII II II III IIl1\\\\\\� I\111j\111I11\1111II1111 II I // � -v \ Fv-/ IIIIIIII II 1� \\\ N 1 III / ill I I / / // ; \ \\ \ \\ \ - , - ,,, I I ,, I II II IIIII„ \,I 1\\\ \1\I I,I III I 111/ III i� � v v�\ VA\ 7so� % �y y\� i) IIII IIII IIIIIIIVII\ll l\�\ \ V 11\11111II11I1II /I Il // /// ---,v v v- /��,vv�w �ll/1/Illlll l)II\\IllllIlllllllllllllllll11ll /IIIIII / ///�_= vA v`,� = % �v � y //I I /�I III11)11 1111 IIIIIIII Illllll / I lI // / i/ vvv yv vmoo / „ v� �j� l�lllll l �/ llll ll� 111 I I I I I IIII IIII'i ll lI I 111 1 %/i / \\` \\so I- - , / \\ \ \ -, ill ll /N/),/ I IIIIII IIIIIIIIIIII, I l / ' /III Il/ � I-O _ -- �/ -�` �\\� - /// // '///l lll� /i/r 8iIII IIIIIIIli4hl (l/ /I j/ ll I II II = \\\\\\\\ - i / �/�"////llll/��// //////IllI,I"I''lll // / / / /�I I 1 / I � 1 \\\ \\ f/I , I �m/c , ///I ! r I Illlll I/ // /// I II 1-1 ,- � - - - \ \ \�\ �i%////�///// III IIIIIIItl I // ///// IIll I \ //'/ \%� �l\ \ \ \\- - /�////�////IIII/// //�////�I�IIII I l r l � / / / / /,— --- / / //// // l// / III I IIII / 1 l l l 1 \ 1 \ \ \ / �/ i i FS i�///� ////�� IIII/ //� �� '1 I1 III \ \ 1 \ \ \ \ \ \ / / / / / /i -I\ � \� \ ///(/ /�/%/////l // III I I A V A v v � t 7/ �, ,/ �/ // ;vv vv i/,ii////,, / /ri// I I�Iilll I \ \ v / / ; v vA\vvvv v �j ///// /z�/// lI I \ \\ \\�vvv� AVA � ) /l�/ ////�j- vw�v /111�lIIII�i / 1111�1� ��o)))AJ - // �\ \�\\vv VA A \1 III/ ( IIII (I/ vvvyv- / l�/l�l///,�� f��III \ \ \\ \\VAA\llfl III I I I I III// ��v\vv=� /// llllllll�� 1 '/ \ \ v \� A\ 11� I I1II� I I\A 1 1II� �w� - l %111�11Vj/l 11�I l III \ \ 1 I VA I I (�� _- // vvA , 11\IIllll�lf ll IVAvvvI\ IIIIIVy = = ////// l I- 1711I11 _� II I \1 \\ VA \ \ _ - �_-- \ - I II II � ��} III I I I I � I ( ) I \ \ V A v VA VA \\1\VA, \\�\\\�- r 1)1 j J III \ -\ \ I I I I ) I / I 1 l I )1 \ �\\ \\ \\\\ \\\ � \\ q , —�\ / 1 I I A\-)I11/(///I I ' III V �` ` VA \ \\\I\,`II ;\\\\\\\\ \ I\) I, , / / I )I11 )I III II II II 11\\\IIIIII Illllll\\ I \ \ \III iZ I� („� //I I I /I I I I II ) i\ I I I I I I I I I III I III I I I I I I I I I / I I) ) // \II fl,-/j^/ ^ // / / ^ / ( I �lI II/I/ !IIII IIII Il /I I I I I I II A////�///�/��//////; J j),F/,R/^N//IlloIIIII`lliII I I I ( /I (\ It /, , I ///z / / /i I //i//// // �/ I I I I � 1 I � I , I I / //� / �// i = i� / / // Ill I I I l l `° �� /��/I-�/ -/ �/--� - /�i/� /l / 1 I I 1 V V A } I I / /1 //0 ;%//�//% ////l�1(1\1\\\ \\ \ V A I I / / 11, ��/�� % �/ ��j��/� �/ // / 11 l) 11 I I A \ I ,n� �� /// /� f // / I \ \ I I IAA 25bR/�/ II �'% — ��//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, '/W"', /� \ GWA l I ` \ r -- / �,`�N CARP/,', DUKE DWG TYPE: DWG DFTR: VMO/ANE TOPOGRAPHIC MAPPING, AND OTHER HISTORICAL DRAWINGS AND INFORMATION AND SHOULD BE CONSIDERED APPROXIMATE. THE "APPROXIMATE LIMITS OF /// // x \GW 43• ` l 1 \ /I. ASH BASIN FACILITY BOUNDARY" INCLUDES THE CONTAINMENT DAMS AND DIKES WHILE THE "APPROXIMATE LIMITS OF CCR BOUNDARY" EXCLUDES THOSE // GWA-33S\ 1 l \ \ \ \ -- / •'�•E S/ �•'�Jj 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. -GWA-33BR \ I / \ � / * • 9 • ENERGY® IT SHOULD BE NOTED THAT THE DETERMINATION OF THE ACTUAL LATERAL EXTENT OF THE CCR MATERIALS WILL TAKE PLACE PRIOR TO, AND/OR DURING, �\ GWA-33D \ ) / -- \ — / / _ .10 DATE: DECEMBER 18, 2019 ENGR: JB IMPLEMENTATION. \� J �� \� �I II / / 032667 (4(61z4('q FILENAME: .013 FINAL GRADES.dwg APPD: JB \� - ` I / / ' v •• 4$' I ,, e •.� DWG SIZE DRAWING NO. REVISION REFERENCES: \ — \\ ( / i O ••'•- �c/ . 1. ASH BASIN FACILITY BOUNDARIES, BORING LOCATIONS, PIEZOMETER LOCATIONS, AND WETLAND AND SEEP LOCATIONS PROVIDED BY DUKE ENERGY. \ �1� R l / / // �i� CS�L.0 `�� 2. EXISTING TOPOGRAPHIC INFORMATION WAS PRODUCED FROM PHOTOGRAMMETRIC METHODS FROM AERIAL PHOTOGRAPHY OBTAINED ON JULY 31, 2015 BY WSP. \\\\ i'7 \ '�� A M • ��` ANSI D � \� \ M l� \ / / ��1r�� 22"x34" CLS C9XX.OXX.010 \\\�\ --1 / REV DATE JOB NO. I PROJECT TYPE I DES I DFTR CHKD ENGR DESCRIPTION 6 7 8 9 10 1 I I I Plotted By: Bell, Josh Sheet Set: 7812190194 - Active Ash Basin Layout: .013 FINAL GRADES February 03, 2020 11: 07: 27am 0: \Duke\CliffSide\7812190194 - Cliffside Closure Plan\Plansheets\Active Ash Basin\.013 FINAL GRADES.dwg INCHES TENTHS 4 5 1 2 3 10 20 30 1 1 .011 REV .---- 0 C F 795 790 785 780 775 770 765 760 755 750 745 740 735 730 725 720 715 710 705 700 695 690 685 680 675 780 775 770 765 760 755 750 745 740 735 730 725 720 715 710 705 700 695 690 685 680 675 670 665 660 655 650 810 805 800 795 790 785 780 775 770 765 760 755 750 745 740 735 730 725 720 715 710 705 700 790 785 780 775 770 765 760 755 750 745 740 735 730 725 720 715 SECTION A -A 795 790 785 780 775 770 765 760 755 750 745 740 735 730 725 720 715 710 705 700 695 690 685 680 675 o O o o O o 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 o O O O O O O O O o 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 o Lr) o L0 o Lr) CDLr) o LO CDLO CDLO CDLO CDLr) CDLr) o Lr) o L0 o L0 o L0 o L0 CDLr) CDLr) CDLr) o Lr) o Lr) C)LO C)L0 C)L0 C)L0 o LO CDLO CDLO CDV) o LO C)L0 C)LO C)LO + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + O 0 N N CO CO lt qt Lr) Lr) (0 (0 r r 00 00 0) 0) O O N N M M ',I- ',I- M M 0 0 r r M M 0 0 O O N N M M It It M M (0 (0 r r M M M M O C) N N N N N N N N N N N N N N N N N N N N M CO CO CO SECTION A -A 780 775 770 765 760 755 750 745 740 735 730 725 720 715 710 705 700 695 690 685 680 675 670 665 660 655 650 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 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 O O O O O O O O O co LO O LO O LO O LO O LO O LO O LO O LO O LO 0 LO 0 LO 0 M 0 M 0 U') 0 U') 0 U') O LO O LO 0 LO O LO O LO O LO O LO O LO O LO O LO O LO O Lr) O M O LO O LO O LO 00 + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + — N N CO CO 1:t 1:t LO LO (D (D fl- fl- 00 00 0) 0) O O N N CO CO lt lt LO LO (0 (0 Il- � 00 00 M M O O — — N N CO CO 1:t 1:t LO LO (D (D fl- fl- 00 00 O O O 0 — — N N N co M M co co co co co co co co co co co co co co It It It It It It It It It It It It It It It It It It It It LO LO LO Lr) U) U) LO LO LO LO LO LO LO LO LO LO LO LO LO LO (0 (0 (0 (0 (0 (0 C0 SECTION B-B 810 805 800 795 790 785 780 775 770 765 760 755 750 745 740 735 730 725 720 715 710 705 700 0 o O O o 0 0 o O O o 0 0 0 0 0 0 0 0 0 CD CD CD CD CD_ O LO o LO O LO O LO o LO O LO O LO O LO O LO o LO o Lr) o Lr) + + + + + + + + + + + + + + + + + + + + + + + + ++ O O N N M M 'It 'It LO LO (0 (0 1 pl- M M O O O O CQJ SECTION C-C 790 785 780 775 770 765 760 755 750 745 740 735 730 725 720 715 O O O o O O O O o O O O O O O O O O O O (0 O V) O LO O LO O V) O LO O Lr) O Lr) O Lr) O Lr) O V) 00 + + + + + + + + + + + + + + + + + + + + + O O r N N CO M 'It 'It LO LO (D (0 Il- rl- M M 0 0 M INCHES 1 2 3 ITENTHS 10 20 30 795 790 785 780 775 770 765 760 755 750 745 740 735 730 725 720 715 710 705 700 695 690 685 680 675 670 665 660 655 SECTION D-D 795 790 785 780 775 770 765 760 755 750 745 740 735 730 725 720 715 710 705 700 695 690 685 680 675 670 665 660 655 O O O O O O O O O O O O O O O O O N O LO O LO O LO O LO O LO O LO O LO O LO O M O C) N N M M � � LO LO (D (D fl- 1 - 00 00 REV DATE JOB NO SECTION E-E 775 770 765 760 755 750 745 740 735 730 725 720 715 710 705 700 695 690 685 680 675 670 665 660 655 650 �,vv—��I I ) �i— IIIII II IIII IIII \\�C\ I� Ilpll — \� I�(r � � l� I A /l�Ijlll�lllllllllll I �II ��` / I �'I/�IIIIIIIII 11 Ar 1sms�\\�\\ \11 � ; _ l�� ( l ll�Il IIIllllll�//�i �)� ��i�,,,, i �, � /�l/lj/�l�llll�lllllllll�lll///%-��-�i� , �\� � ,�llllUlli��lil��//�,li%;,\ir,,, /� � , �// J /// Ill I I IIII{II ( / )N i�� (\\vv ��v vv� v y v__ v\ v v v \ (!�= »\, o� )Jtlr��il _ 0r�ii�// f�l(�JI hllb�i Po��y,O�i/o/%jO > (%// i%ice l� i \�` VAV�% % \�\ /// V \\\\\ ` — _ 1�\\ \ � SECTION MAP SCALE: 1" = 500' 775 770 765 760 755 750 745 740 735 730 725 720 715 710 705 700 695 690 685 680 675 670 665 660 655 650 O O O O 0 0 O O O O O O O O O O O 0 O O 0 0 CDN o M 0 M O LO o M 0 M o M O LO o M O LO o M O LO 0— + + + + + + + + + + + + + + + + + + + + + + ++ O O N N co co 'IT IT LO LO (D (D Il- rl- 00 00 00 0 0 0 c r 0 0 Lfl 0 M 1 1 0 1 1 0 M TITLE ACTIVE ASH BASIN COAL COMBUSTION RESIDUALS WOO SURFACE IMPOUNDMENT CLOSURE PLAN ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION F Wood Environment & FINAL GRADES- PROFILES Infrastructure Solutions, Inc. 2801 YORKMONT ROAD, SUITE 100 CHARLOTTE, NC 28208 FOR TEL: (704) 357-8600 FAX: (704) 357-8638 LICENSURE: INC ENG: F-1253 INC GEOLOGY: C-247 ISSUED FOR REVIEW SEAL SCALE: AS SHOWN DES: VMO CARODUKE ,,, DWG TYPE: DWG DFTR: VMO/ANI ` •''•E •S/ ''•C��'� JOB NO: 7812-19-0194 CHKD: KRD 4 9 '•� ENERGY® DATE: DECEMBER 18, 2019 ENGR: JB 032667 f 2:` (8�'L4 FILENAME: .014 FINAL GRADES- PROFILES.dwg APPD: JB FNGINE�e ��✓�` DWG SIZE DRAWING 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, \ \ \ � \ \\\\ \ \ \ \ \\ \ \ \\ \ \ \\\ \\ I \ I I \ I `��`� N C�,ARO�'/� � DWG TYPE: DWG DFTR : VMO/ANE TOPOGRAPHIC MAPPING, AND OTHER HISTORICAL DRAWINGS AND INFORMATION AND SHOULD BE CONSIDERED APPROXIMATE. THE "APPROXIMATE LIMITS OF \ \ \ \\ \\\\ \ \ \\ \ \\ \\11I 1 I I ASH BASIN FACILITY BOUNDARY" INCLUDES THE CONTAINMENT DAMS AND DIKES WHILE THE "APPROXIMATE LIMITS OF CCR BOUNDARY" EXCLUDES THOSE I ) I \ \ \\ \\\\\ \\\ \ \ \ \\\ \ \ \ \ I I I I ..• • E S� �: 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. I \ \ \ \ \\ \\ \ \ \ \ \ I\ I 1 III I III \ I I 9 • E N E RGY IT SHOULD BE NOTED THAT THE DETERMINATION OF THE ACTUAL LATERAL EXTENT OF THE CCR MATERIALS WILL TAKE PLACE PRIOR TO, AND/OR DURING, \ \ \ \ \\ \\\ \ \ \ \ \ \\ \ \ `I I I \ I IIII I I I 4 ® DATE: DECEMBER 18, 2019 ENGR: JB IMPLEMENTATION. \ \ 1\ \\\\\\ \ \\ \ \ \ \ \ \ II II II I \ II I \ I 2. EXPLORATIONS PERFORMED IN ASH STORAGE AREA 2 INDICATED NO PRESENCE OF ASH, THEREFORE ASH STORAGE AREA 2 IS NOT INCLUDED IN THE ACTIVE \ \ \ \ \ \\\ \\\\ \\\\ \ I \ I I I\ I I 032667 �` FILENAME: .015 MAIN DAM INITIAL CONDITIONS.dwg APPD: JB ASH BASIN CLOSURE PLAN. I \ \ \ \ \ \ I \ \\\\ \\\ \ \ \ \ \ 1 I \I I I I II I I III I I I I I I I I : v'• F �, �� : DWG SIZE DRAWING NO. REVISION REFERENCES: I \ \ \` I I I\ \\\\ \\\ \\ IIII I I I I I I I I I III I I i 0 `cj .NGINE 1. ASH BASIN FACILITY BOUNDARIES, BORING LOCATIONS, PIEZOMETER LOCATIONS, AND WETLAND AND SEEP LOCATIONS PROVIDED BY DUKE ENERGY. �" S • • • • •• % %` \ I IIIIIII 1\\ III IIIII I I I I I I �., tiUq M- t.� ANSI D 2. EXISTING TOPOGRAPHIC INFORMATION WAS PRODUCED FROM PHOTOGRAMMETRIC METHODS FROM AERIAL PHOTOGRAPHY OBTAINED ON JULY 31, 2015 BY WSP. \ \\ \ \ \ \ \ I I I I I I I C LS C9XX. 0XX. 012 / 1 / IIII \\ \\ \\11 IIII IIII IIII IIII I I 'iittttt` 22"x34" ---- 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 0 C) N F Plotted By: Bell, Josh Sheet Set: 7812190194 - Active Ash Basin Layout:.015 MAIN DAM INITIAL CONDITIONS February 03, 2020 10: 46: 46ann Q:\Duke\CIiffSide\7812190194 - Cliffside Closure Plan\Plansheets\Active Ash Basin\.015 MAIN DAM INITIAL CONDITIONS.dwg El .013 I REV .---- BROAD RIVER = 660- 670 CID 690 _ \\ \I\ ivp -700 720 - -- -750 / 3 4'1 W I —660— — --------------- — ---- 60 0 60 120 1 N --- ----�- 1 / / /_ �_ ----- ---- --MW-� --- --_ GWA-22S�GWA-22BRU — \ / —___-- — Mw-2oDR--------------_----- — _ —____—__—_—_—�-670= //f-------------------_ -- --_ 680 =_ ——` _� ----- /�C_��-�--680— — -------- 700- zz 20- 7/— I 2:1 \ —730 I I ��--J I I I 1 1 I // / / 760 o o 6.2:1 --_-- \—� \\— J I \1 I I I ( / �' — — — — — - c9 1BRL- -- \�� I /-------- -- 3-6:1 / �780— 2�1�CCR17@_--_�/,////---- _�— _ / I I 241 —� V A 680 670= � VA\V AA\VA \�\_ E � V�VA\VAA\VAVA\\\VAVAVA I� \ VV�\V� \� \\\\V�\ VA \ \ \ \VA \ \ \ \ '0 $ICCR� 4DV ( I I I I I� 1 A\ \\\\ II I I I I I I I I I I I I I I I I I I I I I I I I I I V v� 2:1A 1�� v VV\\ VA\\\VA\\� VAVA I I I \ I I I I I \ \\\\ v v v TITLE \ / / l III I I 3• I I 1 \ \ \ \ \ \\ \\ \ \ \ \ ACTIVE ASH BASIN COAL COMBUSTION RESIDUALS \\VAVA \\ \\ \\ VA\VXV� 0�1 \ V A \\ v \\\\\ \\ \ ��V�\ \\ V A v v v v v v v v v\ SURFACE IMPOUNDMENT CLOSURE PLAN �wood.A\\A\ \ I1IIlII ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION / / / / / � '-_ \ �/ g� L / / J I I I I I I I I I I� I I I II I I I I I\ \ 1 ` \ \ \ \ \ \ \ \ 111 II II I II I I I II 1 I \ \ � \ \� \\ \ \ \ \ \ \\\\ \ \ \\ \ F // / v vM°1D �I I I I I 1 1 1 1 A 1 11 I V A \ \� \VAV 1 III IIII \ V A V A\V�VA\�\V_\\\�VA_VA\\ \\V�\V\\ V` ` \ VA \ V ` \ \ vv Wood Environment & Infrastructure Solutions Inc. MAIN DAM FINAL CONDITIONS 2801 YORKMONT ROAD, SUITE 100 CHARLOTTE, NC 28208 FOR ISSUED FOR REVIEW — � = — TEL: (704) 357-8600 FAX: (704) 357-8638 CCR-05D �- / I I I \ I A \ V A A \ \ \ V A VA V A� I I I \I II I I 11 \ V A \ \\ \V�VA\V�\VA�\I1�VA\� VA\\�\\\V�\ 1 I A I LICENSURE: NC El F-1253 NC GEOLOGY: C-247 \\\\\\111 111\\ NOTE: A \ \ \ \ \ SEAL \ \ \ \ \ \ \\ \ \ \ \ \ \ \ \\ \ \\ \ \ \ 111 \ SCALE: AS SHOWN DES: VMO DUKE 1. THE "APPROXIMATE LIMITS OF ASH BASIN FACILITY BOUNDARY" AND THE "APPROXIMATE LIMITS OF CCR BOUNDARY" ARE BASED ON AERIAL PHOTOGRAPHY, \ \ \ \ \\\\ \ \ \ \ 20:1 \ \\ \ \ 1\\ \\ 11 I 1 I 1 ``� \A CARD�' DWG TYPE: DWG DFTR : VMO/ANE TOPOGRAPHIC MAPPING, AND OTHER HISTORICAL DRAWINGS AND INFORMATION AND SHOULD BE CONSIDERED APPROXIMATE. THE "APPROXIMATE LIMITS OF \ \ \ \\ \ \ \ \\ \ \\ \\1 \ \ I I \ ` ' ASH BASIN FACILITY BOUNDARY" INCLUDES THE CONTAINMENT DAMS AND DIKES WHILE THE "APPROXIMATE LIMITS OF CCR BOUNDARY" EXCLUDES THOSE 1 1 \ \ \\ \\\\\ \\\ \ \ \ \ \\ \ \ \ \ 1 I I I .• • E S/ �: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. I \ \ \ \ \\ \\ \ \ \ \ \III IIII IIII III 9 ' ENERfC-7**v1 IT SHOULD BE NOTED THAT THE DETERMINATION OF THE ACTUAL LATERAL EXTENT OF THE CCR MATERIALS WILL TAKE PLACE PRIOR TO, AND/OR DURING, \ \ \ 1 \\ \\\ \ \ \ \ \ \\ \ \ `I I \ I I II I I I I I = a ® DATE: DECEMBER 18, 2019 ENGR: JB IMPLEMENTATION. FILENAME: .016 MAIN DAM FINAL CONDITIONS.dwg D: \\\ \ \ \ \ \ 1 11 II II I 111 I I I \ \ \ \ \ \\\ \\ \\ \ \ \ \ \ \ I I I II I I \ 032667 «:'�t$�z"`4 APPJB � REFERENCES: I \ \ \ ` I I \ \ \\ \ I I I I \ II II I I :�'vOScc•�w� DWG SIZE DRAWING NO. REVISION \\ \\\\ I I I I I I I NG ... 1. ASH BASIN FACILITY BOUNDARIES, BORING LOCATIONS, PIEZOMETER LOCATIONS, AND WETLAND AND SEEP LOCATIONS PROVIDED BY DUKE ENERGY. i I I 2. EXISTING TOPOGRAPHIC INFORMATION WAS PRODUCED FROM PHOTOGRAMMETRIC METHODS FROM AERIAL PHOTOGRAPHY OBTAINED ON JULY 31, 2015 BY WSP. I / 1 / IIIIIIII I 1 \ \\ \ \ \\ IIIIII IIIIIII II IIIIIII IIIIIIIII II ly(1A M • ANSI D '11111111110,` 22"x34" C L S C 9XX OXX 013 ----\\ REV DATE JOB NO. PROJECT TYPE DES DFTR CHKD ENGR I DESCRIPTION — INCHES 1 2 3 TENTHS 10 20 30 4 5 6 7 8 9 10 in. F Plotted By: Bell, Josh Sheet Set: 7812190194 - Active Ash Basin Layout:.016 MAIN DAM FINAL CONDITIONS February 03, 2020 10: 48: 34am Q:\Duke\CIiffSide\7812190194 - Cliffside Closure Plan\Plansheets\Active Ash Basin\.016 MAIN DAM FINAL CONDITIONS.dwg 4 5 6 7 8 .014 REV .____ w F t — — / \ / SUCK CREEK _ S-150 720 -O*GWA- ;10001 30 0 30 60 FT / / / / — — — — — — — — — — — / p0/ \—\—_--- ------ / / //J —/ —i —/ / — — 730\ /RUTHEWf101 / U5 G?0S BMW-08S/ / \__ U-6 ---GWA2D_------------ CCR WA-65B� ----------g0---------------------�U4 GWA-65BRt_ 740— $CCR-11D — -------- —740 _----— — — — — — — — - - — — — — -- ------ — — — — — — — — — — — ------------------------------ -- — — — — — — — — — — — — — — — — — — — — — — — — ------— — — ------ — ----- — — — -------------- I\ —i I/— /— —_/7�— — — --———————----_------- -------- — —-------------- — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — //— ,---_—_----- —— — — — — — — — — — — — — — — — — — — — — — — — — — — — -----------_----- -- —— — — — — — — - - — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — —770 ------------ — —— — — — — — — — — — — — — — — — — — — — — — — — — — — 4- 11-2 AD 110DOn / _ — — — — — — — — — — — — — — — — — — — — — — — — — — — — — -------- ____ ___ ___F --N/° No __ _________________ /——————--— — — — — — — — — — — — — — — — — — — — — — — — — — — — ------------------------------------------ -----------------------i760— --------------------------------- //i — / 3H0 — — — — — — — — — — — — — -7 750 — — — — — — — — — — — — --------------------- _ °N — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — � —� —�E \\— \\— — j \ l -. _ -- — --------, \ ,� � ° 740— / — — — — — — — — — — — — — — — ------ — — — — -- __ � —730— ------------- — — — — — — — — — — — — — — — — — — — — — — — — — — �GWA51D 720 --------------- --------------- -11136BRL — — — — — — — — — — — — 7 --__—___--- —710VC)mo 3°\ J °" I I I °°`TITLE ACTIVE ASH BASIN COAL COMBUSTION RESIDUALS SURFACE IMPOUNDMENT CLOSURE PLAN AIwood. ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION Wood Environment & Infrastructure Solutions, Inc. UPSTREAM DAM INITIAL CONDITIONS 2801 YORKMONT ROAD, SUITE 100 CHARLOTTE, NC 28208 FOR TEL: (704) 357-8600 FAX: (704) 357-8638 ISSUED FOR REVIEWLICENSURE: NC ENG: F-1253 NC GEOLOGY: C-247 SEAL SCALE: AS SHOWN DES: /\V1 I/ \ \�MI \.\ /vO NOTE: i 1. THE "APPROXIMATE LIMITS OF ASH BASIN FACILITY BOUNDARY" AND THE "APPROXIMATE LIMITS OF CCR BOUNDARY" ARE BASED ON AERIAL PHOTOGRAPHY, �CAiiij DUKE DWG TYPE: WDTVMO/A I� I _N\ ,E 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 JOB NO: 7812-19-0194 CHI R 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, ENEK%g®DATE: DECEMBER 18,2019 ENGR: JB IMPLEMENTATION. �Z;r(gfi9 2. EXPLORATIONS PERFORMED IN ASH STORAGE AREA 2 INDICATED NO PRESENCE OF ASH, THEREFORE ASH STORAGE AREA 2 IS NOT INCLUDED IN THE ACTIVE / / / / / / / / / / / l 032667 _ FILENAME: .015 UPSTREAM DAM INITIAL CONDITIONS.dwg APPD: JB ASH BASIN CLOSURE PLAN. / REFERENCES: • v ' F GINS DWG SIZE DRAWING NO. REVISION 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. / / / / / / / / / / / � w.A A . 0`- ANSI D 'I , r till sit 22"x34" C L S C9XX. DXX . 01 4 ---- � 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 1 0 0 F Plotted By: Bell, Josh Sheet Set: 7812190194 — Active Ash Basin Layout:.015 UPSTREAM DAM INITIAL CONDITIONS February 03, 2020 10: 50: 12am Q:\Duke\CIiffSide\7812190194 — Cliffside Closure Plan\Plansheets\Active Ash Basin\.015 UPSTREAM DAM INITIAL CONDITIONS.dwg w F 2 3 4 5 6 7 8 / SUCK CREEK S-150 o 720 t t $tGW^t "z t t — e --- — f— — — — — — — ---------- —_— — — — — — — — — — — — ----------- —730� 730\ ��----//// / RUTHE-050-P101 ---� // // / / / GWA 20S / / — / �U-5� -7 / ° / BMW-08S GWA-20BR / / / / / / 11b X. / / �MW-08D / / / U-6 - - ---------- / / / /------------------ / / / / CCR-O WA-65B� // / 103 40,\� \ \ / �/— _-- — o - ------— — — — — —— / /// / / GWA-65BRIL // �/ $CCR-11D -O�CCI / / -- — �° \\ \ \ \ �� // // / / -- — — — — — / / //-------- — CD h-------_ — _ — / m 12.00%qV \\ / s 7 3:1 4:1 5a / .015 IREV ---- M o j �-90� I GWA 51D CGR-1� 9.9:1 2.7:1 / GWA- 66BRL �u h � 2.1:1 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. REV DATE JOB NO. PROJECT TYPE DES I DFTR I CHKD I ENGR INCHES 1 2 3 TENTHS 10 20 30 4 5 6 DESCRIPTION o \ \ TITLE ACTIVE ASH BASIN COAL COMBUSTION RESIDUALS SURFACE IMPOUNDMENT CLOSURE PLAN ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION Wood Environment & UPSTREAM DAM FINAL CONDITIONS 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 DUKECAF?0 ,�e DWG TYPE: DWG DIVMO/ANI JOB rl CHI KR Q • E S/ ��-� ENERGY® DATE ODECEMBER 98 2019 ENGR: JBD 032667 �;r��f zei9 FILENAME: .018 UPSTREAM DAM FINAL CONDITIONS.dwg APPD: JB DWG SIZE DRAWING NO. REVISION tiUA M ANSI D 22"x34" C LS C9XX. 0XX. 015 ---- 8 9 10 wood. F Plotted By: Bell, Josh Sheet Set: 7812190194 — Active Ash Basin Layout:.018 UPSTREAM DAM FINAL CONDITIONS February 03, 2020 10: 52: 00am Q:\Duke\CIiffSide\7812190194 — Cliffside Closure Plan\Plansheets\Active Ash Basin\.018 UPSTREAM DAM FINAL CONDITIONS.dwg .016 REV ----- A v�GECP�NO g-\N SSE // 0.5'i ///////%/%/%/%/%%/%/%�!� /i�/�/�//%/�/�/�//%/�/�/ //////// / / /pp uP // / 8 OZ/SY NON -WOVEN GEOTEXTILE 0 0 0 0 0 0 ��pMPP 06 Pp�• •/ ///// /////�/�////�/�/�/�/� / / / / / / / / / / / / / ,% �� / of,%/% ///%�/ /-EOM g SN j NOTES: NOTES: 1. THE THICKNESS OF VEGETATIVE SOIL COVER SHALL BE MEASURED FROM THE TOP OF THE BOTTOM OF ASH/RESIDUAL 1. THE THICKNESS OF CLEAN SOIL COVER SHALL BE MEASURED FROM THE TOP OF THE BOTTOM OF ASH/RESIDUAL MATERIAL TO THE TOP OF THE VEGETATIVE SOIL COVER IN THE VERTICAL DIRECTION. 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 SOIL COVER SYSTEM SCALE: 1" = 1' SPECIFICATIONS 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 C 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 D 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". Seedings properly carried out E 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. F 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. ('_4 SEEDING SPECIFICATIONS 016 NTS INCHES 1 2 3 ITENTHS 10 20 2 TYPICAL RIPRAP COVER SYSTEM .016 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 Seeding mixture (fall) Species' Rye Grain (Seca/e cerea/e ) Seedina Mixture (late winter early sorina) Species" Rye Grain (Seca/e cerea/e ) Seeding mixture (summer) Species' German Millet (Setar/a/ta/ica) Seeding dates (Piedmont) Fall: Late winter (early spring): Summer: Rate (lb/acre) 120 Rate (lb/acre) 120 Rate (lb/acre) 40 Aug. 15 - Dec. 30 Jan. 1 - May 1 Late May 1 - Aug. 15 VARIES p\L COS O LEP �y G-1P�\v0 E21 �GOM C106 gAA Isee 0.5' p ;/ / e° °),\I �%%j%j �P p\ ///////// / /// /// NOTES: 1. THE THICKNESS OF CLEAN SOIL COVER SHALL BE MEASURED FROM THE TOP OF THE BOTTOM OF ASH/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. w Q 1 > 13 26' TYPICAL OVEREXCAVATION SOIL COVER SYSTEM SCALE: 1" = 1' EXISTING GRADE/ BOTTOM OF ASH ------------ ■ I Soilamendments Followowrecommendations 5 CHANNEL GEOMETRY (AREAS OF CUT) Follow of soil tests or apply 2,000 lb/acre ground agricultural limestone and 750 lb/acre 10-10-10 fertilizer. Mulch .016 N.T.S. 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. EXISTING GRADE/ 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 BOTTOM OF ASH 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 1 10 !:y 10 1 disturbed areas within 14 working days following completion of construction or development. Q � 1 13 > 13 1 'REF: 6.10 A,B and C, NC Erosion and Sediment Control Planning and Design Manual, 2013 _ 26' / PERMANENT SEEDING SPECIFICATIONS — — — — — — — — Seeding mixture Species' Rate(lb/acre) 6 CHANNEL GEOMETRY (AREAS OF FILL) Tall fescue (Festuca arund/nacea) (Grass lined Channels) 200 Tall fescue (Festuca arundinacea) (Other Areas) 100 .01 6 N.T.S. Nurse plants Between May 1 and Aug. 15, add 10 lb/acre German millet (Setaria ita/ica) or 15 lb/acre Sudan grass. Prior to May 1 or after Aug. 15, add 40 lb/acre Rye Grain (Festuca arundinacea ). TITLE ACTIVE ASH BASIN COAL COMBUSTION RESIDUALS Seeding dates SURFACE IMPOUNDMENT CLOSURE PLAN Best Possible wood. ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION Fall: Aug. 25 - Sept. 15 Aug. 20 - Oct. 25 Late winter: Feb. 15 - Mar. 21 Feb. 1 -Apr. 15 Wood Environment & DETAILS 1 Soil amendments Infrastructure Solutions, Inc. 2801 YORKMONT ROAD, SUITE 100 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 CHARLOTTE, NC 28208 FOR fertilizer. TEL: (704) 357-8600 FAX: (704) 357-8638 LICENSURE: NC ENG: F-1253 NC GEOLOGY: C-247 ISSUED FOR REVIEW Mulch SEAL SCALE: AS SHOWN DES: VMO Apply 4,000-5,000 lb/acre grain straw or equivalent cover of another suitable mulching material. Anchor mulch by tacking with CAR ��'� DUKE DWG TYPE: DWG DFTR : VMO/ANI asphalt, roving, or netting. Netting is the preferred anchoring method on steep slopes. ` ` .`� • • . , Qs �, Maintenance : ' • E S� 9 `� JOB NO: 7812-19-0194 CHKD: KRD ;'Q r ENEM%--7 I (R) DATE: DECEMBER 18, 2019 ENGR: JB 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. 032667 �'1 t�,i4 FILENAME: .017 DETAILS 1.dwg APPD: JB Pursuant to G.S. 113A-57(3), provisions for permanent groundcover sufficient to restrain erosion must be accomplished for all ^ ��/Q•• ��/GINE�, v� DWG SIZE DRAWING NO. REVISION disturbed areas within 14 working days. , ........ tiU,q M•�``` ANSI D 'REF: 6.11L NC Erosion and Sediment Control Planning and Design Manual, 2013 "1'1111110,* 22"x34" C LS C9XX. OXX. 0 16 ---- REV, DATE JOB NO. PROJECT TYPE DES DFTR CHKD ENGR DESCRIPTION 30 4 5 6 7 8 9 10 0 0 rn C 1 1 1 1 F Plotted By: Bell, Josh Sheet Set: 7812190194 — Active Ash Basin Layout:.017 DETAILS 1 February 03, 2020 10: 52: 15arr Q: ADuke\CliffS'de\7812190194 — Cliffside Closure Plan\Plansheets\Active Ash Basin\.017 DETAILS 1.dwg 3 1 5 6 7 8 I .017 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/.020 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) ,0 1 7 N.T.S. 12" DIAMETER COMPOST SOCK CHECK DAM TWO (2) 2" X 2" WOODE STAKES PLACED 4' O.( 2:1 M)( 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. TEMPORARY SILT FENCE N.T.S. STABILIZED DISCHARGE AREA INSPECTION AND MAINTENANCE NOTES: 2:1 MAX. SLOPE UNDISTURBED AREA �O 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. IREVI DATE I JOB NO. I PROJECT TYPE DES DFTR CHKD ENGR I DESCRIPTION INCHES 1 2 3 TENTHS 10 20 30 4 5 6 7 r ji 5' AT HIGH END OF DEVICE POINTED UPHILL TO PREVENT END -AROUND FLOW 12" DIAMETER COMPOST SOCK THREE (3) 2" X 2" WOODEN STAKES PLACED 8' O.C. AREA OF EXCAVATION / DISTURBANCE 5AT LOW END OF DEVICE POINTED DOWNHILL TO PREVENT PONDING if MAX WATER LEVEL 4" MINIMUM FREEBOARD 12" DIAMETER COMPOST SOCK THREE (3) 2" X 2" WOODEN STAKES PLACED 8' O.C. PYRAMID INSTALLATION SECTION 4 TEMPORARY COMPOST FILTER SOCK •O j7N.T.S. TITLE ACTIVE ASH BASIN COAL COMBUSTION RESIDUALS SURFACE IMPOUNDMENT CLOSURE PLAN wood ROGERS ENERGY COMPLEX - CLIFFSIDE STEAM STATION 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 DUKECAR 0 �� DWG TYPE: DWG DFTR: VMO/ANI ` •''•E •S/ ''•C��'� JOB NO: 7812-19-0194 CHKD: KRD 4 9 ••ems-� ENERGY® DATE: DECEMBER 18, 2019 ENGR: JB 032667 L�s(z�+`4 FILENAME: .018 DETAILS 2.dwg APPD: JB ';v0' FNGINE�e ��✓�` DWG SIZE DRAWING NO. REVISION SyUA M • �`�� ANSI D �1111111110%� 22"x34" C LS C9XX. OXX. 017 ---- 8 9 10 1 1 1 1 F Plotted By: Bell, Josh Sheet Set: 7812190194 - Active Ash Basin Layout:.018 DETAILS 2 February 03, 2020 10: 52: 30ann Q:\Duke\CIiffSide\7812190194 - Cliffside Closure Plan\Plansheets\Active Ash Basin\.018 DETAILS 2.dwg