Marshall CBE - Closure Plan - Appendix D_20200107

MAR_C999.002.001 I REV. A
DUKE ENERGY
MARSHALL STEAM STATION
"I COAL COMBUSTION RESIDUALS SURFACE IMPOUNDMENT CLOSURE PLAN DRAWINGS I"
CLOSURE BY EXCAVATION
r.ATAWRA COUNTYNORTH CAROLINA 11
,
ASH BASIN DAM STATE ID: CATAW-054, NPDES PERMIT #: NC0004987
DECEMBER 13,2019
DWG NO. DWG DESCRIPTION
a= MAR C999.002.001 COVER SHEET
MAR_C999.002.002 GENERAL NOTES
MAR_C999.002.003 EXISTING CONDITIONS PLAN WITH AERIAL
� �� .,. � <• '�_� %;' � � � . > ;,! � MAR_C999.002.004 EXISTING CONDITIONS PLAN WITH TOPOGRAPHIC MAP
l!u- (� ,�;�`� �f ��� MAR_C999.002.005 EXISTING CONDITIONS PLAN
�� •0 %\� ...• � - > � ��� MAR C999.002.006 EXISTING CONDITIONS PLAN II
MAR C999.002.007 EXISTING CONDITIONS PLAN III
�� �; MAR C999.002.008 EXISTING CONDITIONS PLAN IV
3ubsi o^ :< � 0 i-
s• �.`� .� �. - _; 1 �� ~ MAR_C999.002.009 SUBSURFACE EXPLORATION LOCATION PLAN
"' �- Sherrills•Ford: !± "? ` MAR C999.002.010 SUBSURFACE EXPLORATION LOCATION PLAN AREAS 1 AND 2 �-1`1 � � f 1� 'Y�� �! l f �� —
i MAR C999.002.011 DEMOLITION PLAN
_ . _ ' �t �. ,� •� �, `. �� ,� jam, -
\ ( �� J r - �s! ",,9 �P �i �� MAR_C999.002.012 DEMOLITION PLAN II
MAR_C999.002.013 DEMOLITION PLAN III
;!,,
7 f�-f -:�''` �••✓:. �� ;;� �- caT�gL co MAR_C999.002.014 DEMOLITION PLAN IV
�A�,� MAR_C999.002.015 ESTIMATED BOTTOM OF CCR CONTOUR MAP (OVERALL)
✓' o MAR_C999.002.016 ESTIMATED BOTTOM OF CCR CONTOUR MAP
„ . '"1 •r �1
_ l ` MAR C999.002.017 ESTIMATED BOTTOM OF CCR CONTOUR MAP II
�` _ . i �.� ;!'�� ��;_ \ w MAR_C999.002.018 ESTIMATED MATED BOTTOM OF CCR CONTOUR MAP I I I
W.�
��� 4•,Y.', _.-•v! �•w,r'�✓ �' Lj "`x'- k 1 . MAR_C999.002.019 ESTIMATED BOTTOM OF CCR CONTOUR MAP IV
4' Boa: MAR_C999.002.020 FINAL CLOSURE GRADING PLAN (OVERALL)
i—�i?' �, /. 1 / Ramp
'.✓'+.� I 18M MAR_C999.002.021 FINAL CLOSURE GRADING PLAN I
'0)" MAR_C999.002.022 FINAL CLOSURE GRADING PLAN II
, a MAR_C999.002.023 FINAL CLOSURE GRADING PLAN III
` ASH BASIN ,., �IM' CampErourri
.; MAR_C999.002.024 FINAL CLOSURE GRADING PLAN IV
F. ��f ;�/� ' , so,,,��, +•- �'` MAR_C999.002.025 FINAL CLOSURE GRADING PROFILE
1Y MAR C999.002.026 FINAL CLOSURE GRADING CROSS SECTIONS
�\,! ��• p /,� �- =, '�- '� MAR_C999.002.027 FINAL CLOSURE GRADING CROSS SECTIONS II
MAR C999.002.028 FINAL CLOSURE GRADING CROSS SECTIONS III
ASH BASIN
..
�'�- \� 94Q DAM j MAR C999.002.029 FINAL CLOSURE GRADING CROSS SECTIONS IV
.� —
—
•• �`� �'�;'' �� -�`' MAR C999.002.030 FINAL CLOSURE GRADING PLAN DETAILS
MAR_C999.002.031 ON -SITE LANDFILL SCHEMATIC PLAN
MAR_C999.002.032 ON SITE LANDFILL CROSS SECTIONS
MAR_C999.002.033 ON -SITE LANDFILL CROSS SECTIONS II
E '� �, \�~ '��i ll� '��� �tia,E '�. MAR C999.002.034 ON -SITE LANDFILL CROSS SECTIONS III
F
SITE LOCATION MAP
0 2000 4000 6000
GRAPHIC SCALE (IN FEET)
PREPARED FOR:
8320 NC-150
N SHERRILLS FORD, NORTH CAROLINA 28673
PREPARED BY:
DUKE ENERGY CAROLINAS, LLC
400 SOUTH TRYON ST.
CHARLOTTE, NC 28202
AECOM TECHNICAL SERVICES OF NORTH CAROLINA, INC.
N.C. ENGINEERING LICENSE NO. F-0342
JOHN A. BOVE, P.E.
1600 PERIMETER PARK DRIVE, SUITE 400
MORRISVILLE, NC 27560 REV DATE JOB NO. I PROJECT TYPE DES DFTR CHKD ENG DESCRIPTION
A 1 12/13/19 1 60603377 1 CLOSURE JMW MAW RJB RJB ISSUED FOR APPROVAL
ASH BASIN
SITE OVERVIEW MAP
0 1000 2000 3000
GRAPHIC SCALE (IN FEET)
ASH BASIN
DAM
N LAT: N 35.600
LONG: W 80.970
NOT FOR CONSTRUCTION
COVER SHEET
P"=com MARSHALL STEAM STATION
CLOSURE BY EXCAVATION CLOSURE PLAN
CATAWBA COUNTY, NORTH CAROLINA
N.C. ENGINEERING LICENSE NO. FOR F-0342 ISSUED FOR APPROVAL
SEAL SCALE: AS SHOWN DES: JMW
A DUKE DWG TYPE: .DWG DFTR: MAW
JOB NO: 60603377 CHKD: RJB
ENERGY
� DATE: 12/13/2019 ENGR: RJB
FILENAME: COVER SHEET.DWG APPD: JAB
DWG SIZE DRAWING NO. REVISION
,y A ANSI D MAR C999.002.001 A
22.0"x34.0"
:,
lel
I
PEN
0 INCHES 1 2 3
TENTHS 10 20 30
10

GENERAL NOTES
SURVEY LEGEND
MAR_C999.002.002 I REV. A
0
E
F
1. PURPOSE
1.1. THIS DRAWING SET IS INTENDED ONLY FOR APPROVAL PURPOSES ONLY. IT WILL BE FURTHER DEVELOPED DURING THE
DESIGN PROCESS TO PREPARE CONSTRUCTION LEVEL DRAWINGS.
1.2. INFORMATION REGARDING THE PROPOSED ILF EXPANSION IS CONCEPTUAL AND PROVIDED FOR INFORMATION
PURPOSES ONLY. LANDFILL EXTENTS AND DESIGN DETAILS WILL BE INCLUDED IN A LANDFILL PERMIT APPLICATION TO BE
SUBMITTED TO THE NCDEQ SOLID WASTE SECTION UNDER SEPARATE COVER AFTER NCDEQ APPROVAL OF THIS
CLOSURE PLAN.
2. DATUM
2.1. ALL ELEVATIONS SHOWN IN THESE DRAWINGS ARE REFERENCED TO NORTH AMERICAN VERTICAL DATUM, 1988 (NAVD).
2.2. HORIZONTAL DATUM: NORTH AMERICAN DATUM, 1983 (NAD83).
3. REFERENCES
3.1. THE EXISTING SURVEY INFORMATION (TOPOGRAPHY, PLANIMETRICS, WATER ELEVATIONS, ETC.) IS BASED ON THE
TOPOGRAPHIC SURVEY PERFORMED BY WSP IN APRIL 2014 AND SUBMITTED TO DUKE ENERGY IN JULY 2015, AS WELL AS
AN ADDITIONAL TOPOGRAPHIC SURVEY PERFORMED BY WSP IN JANUARY 2016. IT WAS FURTHER SUPPLEMENTED BY
THE MARSHALL STEAM STATION ACTIVE ASH BASIN DAM, PRINCIPAL SPILLWAY REPLACEMENT AND AUXILIARY SPILLWAY
MODIFICATION RECORD DRAWINGS, DATED NOVEMBER 11, 2016, BY THE EXISTING DAM TOPOGRAPHIC SURVEY AS -BUILT
DRAWINGS SUBMITTED BY ESP TO DUKE ENERGY ON AUGUST 20, 2015, BY THE MARSHALL 2018 ANNUAL SURVEY, DATED
MAY 8, 2018, BY THE MARSHALL STEAM STATION -ROTATION BASIN, FINAL DESIGN REPORT, RETENTION BASIN
(PROPOSED), SCOPE I, COMPLETED BY BURNS AND MCDONNELL AND DATED SEPTEMBER 2017, BY THE WATER
TREATMENT SYSTEM PAD, ISSUED FOR CONSTRUCTION (ADDENDUM 1) DESIGN PACKAGE, COMPLETED BY AECOM AND
DATED JUNE 12, 2019, AND BY THE STRUCTURAL FILL STORMWATER REDIRECTION AND TEMPORARY STORMWATER
PONDS (MAR-145), ISSUED FOR CONSTRUCTION (ADDENDUM 3) DESIGN PACKAGE, COMPLETED BY AECOM AND DATED
MAY 13, 2019.
3.2. CONTOURS DEPICTED BENEATH THE WATER SURFACE ARE BASED ON THE BATHYMETRIC SURVEY PERFORMED BY ESP IN
JULY 2014.
3.3. WATER ELEVATIONS PRESENTED IN THESE DRAWINGS ARE BASED ON THE TOPOGRAPHIC SURVEY PERFORMED BY WSP
IN APRIL 2014 AND SUBMITTED TO DUKE ENERGY IN JULY 2015.
3.4. THE ASH BASIN WASTE BOUNDARY; THE PERIMETERS OF THE 1804 LANDFILL (PHASES I AND II), STRUCTURAL FILL, FGD
LANDFILL, ASBESTOS LANDFILL, AND DEMOLITION LANDFILL; PRESENTED IN THESE DRAWINGS ARE BASED ON THE "2018
COMPREHENSIVE SITE ASSESSMENT UPDATE," PREPARED BY SYNTERRA FOR DUKE ENERGY AND SUBMITTED TO NCDEQ
(NPDES PERMIT NO. NC0004987) ON JANUARY 31, 2018.
3.5. THE PERIMETER OF THE STRUCTURAL FILL ACCESS ROAD PRESENTED IN THESE DRAWINGS IS BASED ON THE "MARSHALL
STEAM STATION STRUCTURAL FILL CLOSURE REQUIREMENT AND RECORDATION (RECORD NUMBER: 006021MS)" LETTER
SUBMITTED TO THE NORTH CAROLINA DEPARTMENT OF ENVIRONMENT, HEALTH AND NATURAL RESOURCES BY DUKE
POWER ON JULY 8, 1998.
3.6. THE PERIMETER OF THE INDUSTRIAL LANDFILL AND THE FUTURE INDUSTRIAL LANDFILL GRADES PRESENTED IN THESE
DRAWINGS ARE BASED ON THE "PERMIT TO CONSTRUCT APPLICATION; DRAWING C19, FUTURE PHASES FINAL COVER
PLAN, INDUSTRIAL LANDFILL NO. 1" PREPARED BY S&ME FOR DUKE ENERGY, DATED NOVEMBER 24, 2009.
3.7. PROPERTY BOUNDARIES AND THE EXTENTS OF LAKE NORMAN PRESENTED IN THESE DRAWINGS ARE BASED ON THE
CATAWBA COUNTY GIS, THE TOPOGRAPHIC SURVEY PERFORMED BY WSP IN APRIL 2014 AND SUBMITTED TO DUKE
ENERGY IN JULY 2015, AND THE "BOUNDARY SURVEY OF PROPERTY TO BE ACQUIRED FROM DELMAR SHERRILL AND
GEORGE C. SHERRILL" DATED JANUARY 27, 2016.
3.8. THE AERIAL PHOTOGRAPH WAS OBTAINED FROM BING (MICROSOFT CORPORATION, 2018).
3.9. JURISDICTIONAL STREAMS AND WETLANDS WITHIN THE DUKE ENERGY PROPERTY BOUNDARY PRESENTED IN THESE
DRAWINGS ARE BASED ON THE "WETLAND AND DELINEATION SURVEY: MARSHALL STEAM STATION" PREPARED BY MCKIM
& CREED AND DATED MARCH 30, 2016.
3.10. THE HISTORICAL (PRE -DEVELOPMENT) GRADES PRESENTED IN THESE DRAWINGS ARE BASED ON DRAWING NO. M-1
ENTITLED "PLANT MARSHALL-UNIT 1&2 SITE PLAN" PREPARED BY DUKE POWER COMPANY, REV. 14, DATED FEBRUARY 3,
1988. (VERTICAL DATUM CONVERTED FROM NGVD29 TO NAVD88).
DETAIL IDENTIFYING
NUMBER
SHEET NO. WHERE
DETAIL IS SHOWN
DETAIL REFERENCE ON SHEET WHERE DETAIL IS CALLED OUT
DETAIL TITLE
DETAIL IDENTIFYING
NUMBER
TITLE
2 SCALE
SHEET NO. WHERE DETAIL
IS SHOWN
DETAIL, NUMBER & TITLE ON SHEET WHERE DETAIL IS SHOWN
SECTION IDENTIFYING
LETTER
A
SECTION REFERENCE ON SHEET WHERE SECTION IS CALLED OUT
1SMB
ONE STORY METAL BUILDING
BIRD
BIRD HOUSE - NESTING POLE
©
CABLE BOX
EC
CONCRETE SLAB - PAD
CMP
CORRUGATED METAL PIPE
QD
DRAINAGE MANHOLE
m
DROP INLET DRAIN
DIP
DUCTILE IRON PIPE
QQ
ELECTRIC MANHOLE
ES E
ELECTRIC SERVICE BOX - PANEL
EX.
EXISTING
EX. LIFT STA.
EXISTING LIFT STATION
----------- EX. PIPE
EXISTING PIPE
O EX. SAT. DISH
EXISTING SATELLITE DISH
° O EWM
EDGE OF WASTE MARKER
—■ -% -■ -X -■ -
FENCE LINE - OTHER
FP o
FLAG POLE
o FIRE
FIRE BOX
d
FIRE HYDRANT
GM o
GAS LINE MARKER
GAS 9
GAS VALVE
-------------
---------------
GRAVEL / UNPAVED SURFACE
GUARD RAIL
--------------- HDPE
HIGH DENSITY POLYETHYLENE PIPE
IV o
INDICATOR VALVE - WATER
LIGHT POLE
MANHOLE
yz_ WATER
MANHOLE - SANITARY SEWER
MONITOR WELL
30-
OVERHEAD UTILITIES
PAVED SURFACE
°
POST
RAILROAD
SIGN
STORM DRAIN
JURISDICTIONAL STREAM
QT
TANK
0
TELEPHONE PEDESTAL
TF
TRANSFORMER
^^�
TREE LINE / VEGETATION
X
UNIDENTIFIED UTILITIES /
STRUCTURES/OBJECTS
¢ ¢ Z
UTILITY POLE / TRANS. POLE / TRANS. TOWER
®
VAULT
VAG
VAULT ABOVE GROUND
V
VALVE
PVC 3
VERTICAL PVC
WATER
WATER ELEVATION (DAY OF SURVEY)
Fw
WATER METER
WV 9
WATER VALVE
Q
WATER WELL
HATCH LEGEND
+ + + + JURISDICTIONAL WETLAND AREA
MARSHY AREA
NOT FOR CONSTRUCTION
GENERAL NOTES
P"=com MARSHALL STEAM STATION
CLOSURE BY EXCAVATION CLOSURE PLAN
CATAWBA COUNTY, NORTH CAROLINA
N.C. ENGINEERING LICENSE NO. FOR F-0342 ISSUED FOR APPROVAL
SEAL DUKE SCALE: AS SHOWN DES: JMW
GA F-1 tft� DWG TYPE: ,DWG DFTR: MAW
JOB
is to ENERGY- DATE: N0121 3/20197 ENGR : RJB
1 # FILENAME: GENERAL NOTES.DWG APPD: JAB
���piDWG SIZE DRAWING NO. REVISION
A 22.0 x34..0" MAR C999.002.002 A
i
P�
H
M

MAR_C999.002.003 I REV. A
'r.
AL
f IV
MAR-145 TEMPORARY
- ISLAND POINT ROAD -
- + � STORMWATER POND '
- ?0 FORCE MAIN (SEE NOTE 1) IIPIMF
,
."� `Vp IL 41 ,.
------------
Aki
O �!" ar INDUSTRIAL LANDFILL r ,�. ■
Z •,!-- 12 r rt ,
r PERMIT NO. 18
C) ♦ ILF PHASE I ■ `
-Now• ,, - ASBESTOS LANDFILL
- PERMIT NO. 1804 '� i
—A ++ p -------------- '----------------------' i -- ----------------
-A •,. r
•_
• ` y DEMOLITION LANDFILL w
MAR-145 TEMPORARY ILF PHASE II PERMIT NO. 1804
STORMWATER POND
SEE NOTE 1
___ *, PROPOSED �' •• ■ - - -�
T MAR-145 STRUCTURAL FILL } ■ - f
li' •♦�� ■ ILF PHASE III ' +- ♦ : ♦ MAR-145 TEMPORARY .
STORMWATER REDIRECT ■ �� ♦♦ r STORMWATER POND * '
- CHANNEL SEE NOTE 1 ■ ' �s� ♦♦♦♦ ♦ ' �� ♦♦
( > . ; .. ( ) ■ � � ♦ FORCE MAIN SEE NOTE*1 �+ Wo
� � F
my
•♦•♦�• ; _ ■ PROPOSED - *♦, i L •+ { : ■} -.: + �■
4 ,. M� j•• ILF PHASE IV
4.
IM
0 44♦ — ' _ 'r
PROPOSED f �•.•••• ' • `'- '` ♦ f
—B * h •.►�� ILF PHASE V .r♦ ��� - t .'�. , .' - .+rt .,'-
• ♦ ' • • 1804 LANDFILL � --1 , ,f* f +#F- ..•4 .i '; •` ''-.''
(PHASE II)
• ■ ■ r ' ` i- PERMIT NO. 1804 �*
{ • ■ ♦ .iI— .� a ♦ 4 .. _ +♦ ;mot . e L
ftW
tt
41
16
df
■ ; i ` - ♦♦♦ '� �`�� _*, ., PHASE I SOIL
♦ - . � ♦♦ ■ �5 +� ' BORROW AREA i '''�" r •
' i STRUCTURAL FILL : - �F 4 w..■♦r♦♦ •`. ��Q- •*.�` ' " ]�:{' B �# *■ * , •
PERMIT NO. CCB0031 ♦ ,�♦Ar?� -1 # (APPROX. LOCATION)
~ ~ • i }� 1804 LANDFILL � •, ,
—C # ♦♦ '.r = it * .�,� (PHASE I) - ■ - ;Wp •:; .,
■ map PERMIT NO. 1804
lip 4r.
fir■.♦ #; `•� l * 4I {+
p ■
STEAM PANT ROAD_ SOLAR . ''�~ - - +~ �?, Rar• ; ' • ' +
- FARM * ' '.-r 4• �, t .� '� .
_
.. ♦ T# AUXILIARY r .� -` P ,
a
• = - ■ _ SPILLWAY ip
. , ■ .� •
STRUCTURAL FILL.: =2
♦ * �.
ACCESS ROAD '•♦�
PERMIT NO. CCB0030 ■ �� ' ■ 'J
—D .� � ram - f ♦ ►' ♦ ♦.■ r� !�
. ♦♦� +••.•• ••♦♦.� - * - �♦ ■ WTS AREA
+ ' '■r,• - + ACTIVE ASH BASIN ♦"'•�
. W.E. = 789.7
• v: , � � , _
FGD CONSTRUCTED • _ Rev '
*'* � �� � � L W E N0758 9N
r a 1N ; � WETLANDS w
TREATMENT AREA � _
' � . t -� •?�o � � • . •t *�, � � � � PRINCIPAL SPILLWAY
. _
+.�, *+. ,INTAKE STRUCTURE
♦ '' ' y - NPDES PERMITTED
� ; FGD ♦♦ '„r • - # OUTFACE 002
O �`` ' M ; LANDFILL ♦♦♦ - POW,�' • �A - i" �+ '-' - `
. RIO' &# ASH BASIN DAM
—E �♦ PERMIT ♦♦♦♦ '- �Z��2 - `� , • * • 6 �'
* k: ♦♦♦ NO. 1809 ♦a p N • +
it Rips
♦ ♦♦ '] �•i•� ,+ - * . i DRY BOTTOM-
■ c' ASH SYSTEM416
IL
♦ ` , -
■ LINED s ' - •+:i, *i
y RETENTION • ♦♦ - ♦ -r COAL ♦ ' •
` :♦ • BASINS ♦♦ • ..
�!+ • ♦ • �' PILE f ♦y• DRY FLY ASH SILOS
* ,r 'r r ♦♦■..••tit GYPSUM AREA i [�opil
-•
•.11. WASTEWATER
—F ■ ■ ` - � - #.+ f ■ � TREATMENT
o , � SYSTEM
oil
• - ►
air
+]I - fir• Irl r + +
ry
�y
Am : MARSHALL STEAM STATION `, � ��
- ■ d _ d*
40 >-
0 INCHES 1 2 3 TENTHS 10 20 30 4 5 6 1 1
LEGEND
ASH BASIN WASTE BOUNDARY (APPROXIMATE)
MAR-145 UPDATED ASH BASIN WASTE BOUNDARY (APPROXIMATE)
............. EXISTING SITE FEATURE (APPROXIMATE)
------- INDUSTRIAL LANDFILL (ILF) PHASE BOUNDARY (APPROXIMATE)
PROPERTY BOUNDARY
NOTES
1. MAR-145 STRUCTURAL FILL STORMWATER REDIRECT CHANNEL, TEMPORARY STORMWATER
POND, AND TEMPORARY FORCE MAIN WERE COMPLETED PRIOR TO IMPLEMENTATION OF
CLOSURE. A PERMIT APPLICATION FOR THE WORK WAS SUBMITTED TO NCDEQ ON MARCH 20,
2018 AND CONDITIONALLY APPROVED ON JUNE 20, 2018.
2. EXPANSION OF THE INDUSTRIAL LANDFILL (ILF) WILL BE COVERED IN FUTURE PERMIT
SUBMITTALS TO THE NCDEQ SOLID WASTE SECTION.
3. EXISTING FREE WATER ELEVATIONS WITHIN THE ASH BASIN REPRESENT PRE -DECANTING
WATER ELEVATIONS.
REFERENCES
1. SEE SHEET MAR_C999.002.002 FOR DRAWING REFERENCES.
0 500 1000
1500
NOT FOR CONSTRUCTION
GRAPHIC SCALE (IN FEET)
EXISTING CONDITIONS PLAN WITH
AERIAL
AAECOM
MARSHALL STEAM STATION
CLOSURE BY EXCAVATION CLOSURE PLAN
CATAWBA COUNTY, NORTH CAROLINA
N.C. ENGINEERING LICENSE NO.
F-0342
FOR
ISSUED FOR APPROVAL
SEAL
CA
fft� DUKE
ENE���
SCALE: AS SHOWN
DES:
JMW
DWG TYPE: .DWG
DFTR:
MAW
JOB N0: 60603377
CHKD :
RJg
DATE - 22/13/2019
ENGR :
RJg
FILENAME: EXISTING CONDITIONS PLAN-AERIAL.DWG
APPD:
JAB
I
s'y o
DWG SIZE
DRAWING NO.
REVISION
ANSI D
22.0"x34.0"
MAR_C999.002.003
A
9 10
F--A--1
to
to
6
0
N
O
O
W
r�
D

MAR_C999.002.004 REV. A
INDUSTRIAL LANDFILL 0007
(ILF) PERMIT NO. 1812
ISLAND POINT ROAD
MAR-145 TEMPORARY
STORMWATER POND
(SEE NOTE 2)
_ <-/�/ � % � r � fl III �• �1'aa �'�. 1`>I%Ill r / ^ 1 \ / � I ,
u///"//i/i
/ 1� �'"` __' --'/ — / -- \ IIII }yi l �, �• �' E / / IIII,�,
t r, "0• \\�UI11`\ \\ \ � \ �� II�I,I�'1 },hlllrl n \`
�1 'Kt,/�
�, �.. %• �;lllal ,\\\\\\� MAR-145 TEMPORARY
?J I \I\\\�\ll \\ ��-, ILF PHASE I `-. `�ill� ( +\\\\\\\\\\ ASBESTOS LANDFILL
\ , : / r I'IIII,� —__ _— hllirl r 1 \\\\\\�11 // STORMWATER POND
/ 111 \\ \ a k \/ 4 _, �, , �. -r- � Illl J ,\ 1„
Z 11 I )\,) \` \ ✓/- _T, L L•11IIIILIL\�,-__ �-—�Illlgll Ji\ L ' 11�\I 11 PERMIT NO. 1804 FORCE MAIN (SEE NOTE 2
c!) \ )
-
2-11
--
A / I PROPOSED
MAR-145 STRUCTURAL FILL O ./ ! I1, �,/,r�\ I\\ 1 1 \ i /- -_ \ l V--- �� ' / `\\ 11
/r/ �� II I DEMOLITION LANDFILL . / / / -,\ / ---- \\__�J \ \ \
ILF PHASE II' // 11/ •'",r I ' \ r \ -
STORMWATER REDIRECT lnl e I \\ (11J/ •, , 1 IIII iI iii
c/1 II PERMIT NO. 1804 //�, \ \`\\
I I -'/ //\\ \ \ \\\ \ 1
CHANNEL (SEE NOTE 2) Z \\ \\ �__ I _ •/J \ / _ , I , 'I• -w~' I / i \ I •/ \
\ \\
PROPOSED
I I ■` ,�I II ILF PHASE III f 1 ll/ I \ �i \ill ////'` / '( \ \ \
I / II '���=� / /' )\ \ I ( \ 1 1 1 j 1 r Ol '1/%/
IIII _-�`� \\\e\J�
�'r �i l \\ \ , 1) 1 L,� �/ III / \\\.=. ��_ //// / /','i-\\\\\ _J1` \\\\\\\\ ` \ �-`•�\ O \ \\\ \\ _ iii/�/��� _\\\\ I ■ I _1__ ` �� \ �/ . �( 1 1 1 O / I \ \ '// / / / / \ _ \\ \ �,
\ �• \ \ 1
� - - 1\ /I //, S== / / s \ III I/ ♦_ / /// �/// i.\` 1 -� \\\1 1\`-
I\\\\q -i ll = — — - I \ \\ ) I // /� =\\ 11 / \ / / / / / !III 1 I / // / / / \\ - \ \ \ 11 I I \ J \
Y� I 1\ 1 I l IIII---� %// / // / , l// r\ �� \ \\,11\\
PROPOSED .\`\' l /1 \ \ 1 /i IIII ��_)),,1 ��>\11�
t'��\\ \\1 `\i'//i//,i iii i,lylll 1 r✓/J I \\\ �/ \ \ / /'%i'i��o /IIIII/ If
\ILF PHASE IV''tI'/ 111
1--E
I­-F
11//ice//i', I / �� //
I \„ IIII/], ♦ // /IIII/ �✓ �1 Il\ ,I II i I °�� //!/ �/ 1 ICI I 1 J/ I( Q" `\ `\ /,/ii/,i/, IIII / iii%/� \IIII 11 I /// \ 1/ 1 \ /�/�� /✓ -1)\ c� l/l/ rll l r r I \J
i'll�l l III \ `\1\�
• \ ,'IIII �'i%/ iii �� / I ; , 11 11 \ 1 // f \ - / /i l ll 11 lIl
� ���� 111 �` / I , IIII iii I 1 IIIII \ � \ � l l,/ IIII /,/ / // / \ I -'_I I ��---'----.
/11 //`1 - ,/i �i'/ii'�/ IIII Ib 11,1� 0 \\ \` \ \ �/ I I �I//r IIII /i/,'// r f `' I / ' \\ 1 �` - \1\ I l \
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j, ACTIVE ASH BASIN
W.E. = 789.7
ASH SLUICE
DISCHARGE LOCATION
of
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■'� \\�\`*`\\ ` WTS AREA
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I II , LAKE NORMAN
W.E. = 758.9
PRINCIPAL SPILLWAY
INTAKE STRUCTURE
NPDES PERMITTED
002
jUTFALL
ASH BASIN DAM
DRY BOTTOM
ASH SYSTEM
/7� DRY FLY ASH SILOS �// r""� /i "i / i ,' - / - / )
40'
WASTEWATER
/ Ilia I//� i; I ' ',i/• TREATMENT I
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LEGEND
EXISTING MAJOR TOPOGRAPHIC CONTOUR
EXISTING MINOR TOPOGRAPHIC CONTOUR
ASH BASIN WASTE BOUNDARY (APPROXIMATE)
MAR-145 UPDATED ASH BASIN WASTE BOUNDARY
(APPROXIMATE)
■�����������■ EXISTING SITE FEATURE (APPROXIMATE)
ILF PHASE LIMIT (APPROXIMATE)
PROPERTY BOUNDARY
100 YEAR FLOOD PLAIN (FEMA)
DENOTES AREAS OF ASH BASIN CLOSED BY EXCAVATION AS
PART OF MAR-145 PROJECT
1. BASIS OF BEARINGS: NC GRID NAD83/2011. ELEVATIONS ARE BASED ON NAVD88.
2. MAR-145 STRUCTURAL FILL STORMWATER REDIRECT CHANNEL, TEMPORARY STORMWATER POND, AND TEMPORARY FORCE MAIN WERE
COMPLETED PRIOR TO IMPLEMENTATION OF CLOSURE. A PERMIT APPLICATION FOR THE WORK WAS SUBMITTED TO NCDEQ ON MARCH 20,
2018 AND CONDITIONALLY APPROVED ON JUNE 20, 2018.
3. EXPANSION OF THE INDUSTRIAL LANDFILL (ILF) WILL BE COVERED IN FUTURE PERMIT SUBMITTALS TO THE NCDEQ SOLID WASTE SECTION.
4. EXISTING FREE WATER WITHIN THE ASH BASIN REPRESENT PRE -DECANTING WATER ELEVATIONS.
REFERENCES
1. SEE SHEET MAR_C999.002.002 FOR ADDITIONAL DRAWING REFERENCES.
0 500 1000 1500
GRAPHIC SCALE (IN FEET)
11 'Y ff .�
NOT FOR CONSTRUCTION
DRAWING KEY
EXISTING CONDITIONS PLAN WITH
TOPOGRAPHIC MAP
P"=com MARSHALL STEAM STATION
CLOSURE BY EXCAVATION CLOSURE PLAN
CATAWBA COUNTY, NORTH CAROLINA
N.C. ENGINEERING LICENSE NO. FOR F-0342 ISSUED FOR APPROVAL
SEAL DUKE SCALE: AS SHOWN DES: JMW
DWG TYPE: .DWG DFTR : MAW
JOB NO: 60603377 CHKD: RJB
P N F nm�C' [DATE. 12/13/2019 ENGR : RJB
FILENAME: EXISTING CONDITIONS PLAN - 600.DWG APPD: JAB
�yl DWG SIZE DRAWING NO. REVISION
ANSI D 22.0"x34.0" MAR C999.002.004 A
9 110

MAR_C999.002.005 I REV. A
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Ilk
Ilk
LEGEND
AECOM PIEZOMETER LOCATION (PHASE 2
ASH BASIN WASTE BOUNDARY (APPROXIMATE)
SCOPE); SEE NOTE 1
0
_ MAR-145 UPDATED ASH BASIN WASTE BOUNDARY
&
GROUNDWATER MONITORING WELL AND SOIL
(APPROXIMATE)
AND GROUNDWATER SAMPLING LOCATION
- - - - EXISTING SITE FEATURE (APPROXIMATE)
850
EXISTING MAJOR TOPOGRAPHIC CONTOUR
- - - ILF PHASE LIMIT (APPROXIMATE)
EXISTING MINOR TOPOGRAPHIC CONTOUR
PROPERTY BOUNDARY
- - - - 100 YEAR FLOOD ELEVATION
DENOTES AREAS OF ASH BASIN CLOSED BY
EXCAVATION AS PART OF MAR-145 PROJECT
NOTES
1. "PHASE 2 SCOPE" REFERS TO THE SCOPE OF WORK PERFORMED BY AECOM AS PART OF THE PHASE 2
RECONSTITUTION OF ASH POND DESIGNS REPORT.
2. BASIS OF BEARINGS: NC GRID NAD83/2011. ELEVATIONS ARE BASED ON NAVD88.
3. CULVERTS BENEATH STRUCTURAL FILL HAVE BEEN ABANDONED IN PLACE BY GROUTING.
4. MAR-145 STRUCTURAL FILL STORMWATER REDIRECT CHANNEL, TEMPORARY STORMWATER POND,
AND TEMPORARY FORCE MAIN WERE COMPLETED PRIOR TO IMPLEMENTATION OF CLOSURE. A
PERMIT APPLICATION FOR THE WORK WAS SUBMITTED TO NCDEQ ON MARCH 20, 2018 AND
CONDITIONALLY APPROVED ON JUNE 20, 2018.
5. EXPANSION OF THE INDUSTRIAL LANDFILL (ILF) WILL BE COVERED IN FUTURE PERMIT SUBMITTALS TO
THE NCDEQ SOLID WASTE SECTION.
6. EXISTING FREE WATER ELEVATIONS WITHIN THE ASH BASIN REPRESENT PRE -DECANTING WATER
ELEVATIONS.
REFERENCES
1. SEE SHEET MAR_C999.002.009 FOR GROUNDWATER MONITORING / OBSERVATION WELL AND
PIEZOMETER LOCATION REFERENCES.
2. SEE SHEET MAR_C999.002.002 FOR DRAWING REFERENCES.
N
DRAWING KEY
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LEGEND
AECOM PIEZOMETER LOCATION (PHASE 2
SCOPE); SEE NOTE 1
GROUNDWATER MONITORING WELL AND SOIL
AND GROUNDWATER SAMPLING LOCATION
EXISTING MAJOR TOPOGRAPHIC CONTOUR
EXISTING MINOR TOPOGRAPHIC CONTOUR
ASH BASIN WASTE BOUNDARY
(APPROXIMATE)
EXISTING SITE FEATURE (APPROXIMATE)
PROPERTY BOUNDARY
- - - - 100 YEAR FLOOD ELEVATION
nlnT�e
1. "PHASE 2 SCOPE" REFERS TO THE SCOPE OF WORK PERFORMED BY AECOM AS PART OF THE
PHASE 2 RECONSTITUTION OF ASH POND DESIGNS REPORT.
2. BASIS OF BEARINGS: NC GRID NAD83/2011. ELEVATIONS ARE BASED ON NAVD88.
3. MAR-145 STRUCTURAL FILL STORMWATER REDIRECT CHANNEL, TEMPORARY STORMWATER
POND, AND TEMPORARY FORCE MAIN WERE COMPLETED PRIOR TO IMPLEMENTATION OF
CLOSURE. A PERMIT APPLICATION FOR THE WORK WAS SUBMITTED TO NCDEQ ON MARCH 20,
2018 AND CONDITIONALLY APPROVED ON JUNE 20, 2018.
4. EXPANSION OF THE INDUSTRIAL LANDFILL (ILF) WILL BE COVERED IN FUTURE PERMIT
SUBMITTALS TO THE NCDEQ SOLID WASTE SECTION.
5. EXISTING FREE WATER ELEVATIONS WITHIN THE ASH BASIN REPRESENT PRE -DECANTING
WATER ELEVATION.
REFERENCES
1. SEE SHEET MAR_C999.002.009 FOR GROUNDWATER MONITORING / OBSERVATION WELL AND
PIEZOMETER LOCATION REFERENCES.
2. SEE SHEET MAR-C999.002.002 FOR DRAWING REFERENCES.
DRAWING KEY
(SEE SHEET MAR-C999.002.004)
0 200 400 600
NOT FOR CONSTRUCTION
GRAPHIC SCALE (IN FEET)
EXISTING CONDITIONS PLAN II
MARSHALL STEAM STATION
CLOSURE BY EXCAVATION CLOSURE PLAN
CATAWBA COUNTY, NORTH CAROLINA
N.C. ENGINEERING LICENSE NO. FOR ISSUED FOR APPROVAL
F-0342
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DATE : 12/13/2019
ENGR : RJB
FILENAME: EXISTING CONDITIONS PLAN.DWG
APPD: JAB
DWG SIZE
DRAWING NO.
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MAR C999.002.006
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LEGEND
�� / \' -� \ \\ I (/ p/ �� -- ,. � AECOM PIEZOMETER LOCATION (PHASE 2 ASH BASIN WASTE BOUNDARY
�� • � ��� ) • ' - >, �� - \ \ \ SCOPE); SEE NOTE 1 (APPROXIMATE)
lk \ \
'k /'4 _ - ) \ �X , \ \ \�I \I & GROUNDWATER MONITORING WELL AND SOIL EXISTING SITE FEATURE (APPROXIMATE)
%' AB-9S/D/BR +P , I\ (� \( IS AND GROUNDWATER SAMPLING LOCATION
Ik � - _ \`\\\ � I h`& �1\ PROPERTY BOUNDARY
—_////---�_—\ \ \\ \ \ \I
/%' - \\\\�` - / �\ EXISTING MAJOR TOPOGRAPHIC
_ _ - - \\�\\\�_ ` / L — - - — 100 YEAR FLOOD ELEVATION
�/ . -- — _ __ ;: s= \` \`„� �` CONTOUR
I- /- _-__ __ \ \� -�\\ -
i ///ii�/' _- \� _�mk- — ')1 \ � .--- EXISTING MINOR TOPOGRAPHIC
I j (j i(� /' /�/iii '''�� _% ��\ \ \\ \C`� N. \\�\ \1' II /' `` \ CONTOUR
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1. "PHASE 2 SCOPE" REFERS TO THE SCOPE OF WORK PERFORMED BY AECOM AS PART OF THE
PHASE 2 RECONSTITUTION OF ASH POND DESIGNS REPORT.
2. BASIS OF BEARINGS: NC GRID NAD83/2011. ELEVATIONS ARE BASED ON NAVD88.
3. EXISTING FREE WATER ELEVATIONS WITHIN THE ASH BASIN REPRESENT PRE -DECANTING
WATER ELEVATIONS.
REFERENCES
1. SEE SHEET MAR _C999.002.009 FOR GROUNDWATER MONITORING / OBSERVATION WELL
AND PIEZOMETER LOCATION REFERENCES.
2. SEE SHEET MAR_C999.002.002 FOR DRAWING REFERENCES.
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_ EXISTING CONDITIONS PLAN III
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JOB NO: 60603377
CHKD: RJB
DATE : 12/13/2019
ENGR : RJB
FILENAME: EXISTING CONDITIONS PLAN.DWG
APPD: JAB
DWG SIZE
DRAWING NO.
REVISION
ANSI
22.0"x34.0"
MAR C999.002.007
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LEGEND
AECOM SOIL BORING LOCATION (CLOSURE DESIGN)
AECOM SOIL BORING LOCATION (PHASE 2 SCOPE);
SEE NOTE 1
AECOM PIEZOMETER LOCATION (PHASE 2 SCOPE);
SEE NOTE 1
QAECOM CONE PENETRATION TEST LOCATION
(CLOSURE DESIGN AND PHASE 2 SCOPE); SEE NOTE 1
AECOM SOIL BORING LOCATION (CLOSURE SOIL
O• BORROW AREA SCOPE - 2019)
-0� S&ME BORING LOCATION (2004 & 2009)
', S&ME BORING LOCATION (2016 & 2017)
.
S&ME SOIL BORING LOCATION (2008 & 2009)
�
S&ME CONE PENETRATION TEST / MONITORING WELL
LOCATION (2009)
S&ME PIEZOMETER LOCATION (2004)
[ S&ME VANE SHEAR TEST LOCATION (2009)
S&ME CONE PENETRATION TEST LOCATION (2009)
DUKE ENERGY BORING LOCATION
SYNTERRA SOIL BORING LOCATION (2018)
z
SYNTERRA GROUNDWATER MONITORING WELL
LOCATION (2018)
®
SYNTERRA SOIL AND GROUNDWATER SAMPLING
LOCATION (2018)
■
SYNTERRA SURFACE WATER SAMPLE LOCATION (2018)
SYNTERRA SHALLOW ZONE PIEZOMETER LOCATION
O
(2018)
SYNTERRA ABANDONED WELL / PIEZOMETER LOCATION
(2108)
O
SYNTERRA ASH PORE WATER MONITORING /
OBSERVATION WELL LOCATION (2018)
O
SYNTERRA PUMP TEST LOCATION (2019)
EXISTING MAJOR TOPOGRAPHIC CONTOUR
EXISTING MINOR TOPOGRAPHIC CONTOUR
ASH BASIN WASTE BOUNDARY (APPROXIMATE)
ILF PHASE LIMIT (APPROXIMATE)
MAR-145 UPDATED ASH BASIN WASTE BOUNDARY
(APPROXIMATE)
EXISTING SITE FEATURE (APPROXIMATE)
KInTFC
PROPERTY BOUNDARY
1. "PHASE 2 SCOPE" REFERS TO THE SCOPE OF WORK PERFORMED BY AECOM AS PART OF THE PHASE 2 RECONSTITUTION OF ASH POND
DESIGNS REPORT.
2. BASIS OF BEARINGS: NC GRID NAD83/2011. ELEVATIONS ARE BASED ON NAVD88.
REFERENCES
1. S&ME BORING LOCATIONS (2004) AND S&ME PIEZOMETER LOCATIONS PRESENTED IN THIS DRAWING ARE BASED ON THE REPORT OF
SUBSURFACE EXPLORATION - MARSHALL BUSINESS PARK (2004) PREPARED BY S&ME. S&ME SOIL BORING / GROUNDWATER MONITORING WELL
LOCATIONS, S&ME CONE PENETRATION TEST / MONITORING WELL LOCATIONS, S&ME BORING LOCATIONS (2009), S&ME VAN SHEAR TEST
LOCATIONS, AND S&ME CONE PENETRATION TEST LOCATIONS PRESENTED IN THIS DRAWING ARE BASED ON THE PERMIT TO CONSTRUCT
APPLICATION - INDUSTRIAL LANDFILL NO. 1 (NOVEMBER 25, 2009) PREPARED BY S&ME FOR THE MARSHALL STEAM STATION.
2. S&ME BORING LOCATIONS (2016 & 2017) PRESENTED IN THIS DRAWING ARE BASED ON THE FOLLOWING DOCUMENTS PREPARED BY S&ME FOR
THE MARSHALL STEAM STATION WATER RE -DIRECTION: SUBSURFACE INVESTIGATION AND GEOTECHNICAL REPORT (SEPTEMBER 21, 2016),
SUBSURFACE INVESTIGATION AND GEOTECHNICAL REPORT - AR (DECEMBER 19, 2016), AND COAL PILE BASINS SUBSURFACE EXPLORATION AND
LABORATORY TESTING (SEPTEMBER 15, 2017).
3. DUKE ENERGY BORING LOCATIONS PRESENTED IN THIS DRAWING WERE PROVIDED BY DUKE ENERGY.
4. SYNTERRA SOIL BORING LOCATIONS, GROUNDWATER MONITORING WELL LOCATIONS, SOIL AND GROUNDWATER SAMPLING LOCATIONS,
SURFACE WATER SAMPLE LOCATIONS, SHALLOW ZONE PIEZOMETER LOCATIONS, ABANDONED WELL / PIEZOMETER LOCATIONS, AND ASH PORE
WATER MONITORING / OBSERVATION WELL LOCATIONS PRESENTED IN THIS DRAWING ARE BASED ON THE "2018 COMPREHENSIVE SITE
ASSESSMENT UPDATE," PREPARED BY SYNTERRA FOR DUKE ENERGY AND SUBMITTED TO NCDEQ (NPDES PERMIT NO. NC0004987) ON JANUARY
31, 2018 WHICH INCLUDES SOIL BORINGS AND SOIL BORING / GROUNDWATER MONITORING WELL LOCATIONS PREPARED BY HDR FOR THE
MARSHALL STEAM STATION: COMPREHENSIVE SITE ASSESSMENT REPORT (DATED SEPTEMBER 8, 2015) AND 2016 COMPREHENSIVE SITE
ASSESSMENT UPDATE (DATED AUGUST 2016).
5. SYNTERRA PUMP TEST LOCATIONS PRESENTED IN THIS DRAWING ARE BASED ON THE "ASH BASIN PUMP TEST REPORT FOR MARSHALL STEAM
STATION" SUBMITTED TO NCDEQ ON JANUARY 31, 2019.
6. SEE SHEET MAR C999.002.002 FOR ADDITIONAL DRAWING REFERENCES.
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CATAWBA COUNTY, NORTH CAROLINA
N.C. ENGINEERING LICENSE NO. FOR
ISSUED FOR APPROVAL
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ENLARGED EXPLORATION LOCATION AREA #1
(SEE SHEET MAR_C999.002.009)
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0 200 400 600
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(SEE SHEET MAR_C999.002.009)
LEGEND
AECOM SOIL BORING LOCATION (CLOSURE DESIGN)
SYNTERRA SOIL BORING LOCATION (2018)
AECOM SOIL BORING LOCATION (PHASE 2 SCOPE);
SYNTERRA GROUNDWATER MONITORING WELL
A
SEE NOTE 1
LOCATION (2018)
AECOM PIEZOMETER LOCATION (PHASE 2 SCOPE);
SEE NOTE 1
®
SYNTERRA SOIL AND GROUNDWATER SAMPLING
LOCATION (2018)
QAECOM CONE PENETRATION TEST LOCATION
SYNTERRA SURFACE WATER SAMPLE LOCATION
(CLOSURE DESIGN AND PHASE 2 SCOPE); SEE NOTE 1
(2018)
AECOM SOIL BORING LOCATION (CLOSURE SOIL
O
SYNTERRA SHALLOW ZONE PIEZOMETER LOCATION
BORROW AREA SCOPE - 2019)
(2018)
S&ME BORING LOCATION (2004 & 2009)
SYNTERRA ABANDONED WELL / PIEZOMETER
LOCATION (2018)
S&ME BORING LOCATION (2016 & 2017)
SYNTERRA ASH PORE WATER MONITORING /
S&ME SOIL BORING LOCATION (2008 & 2009)
,
O
OBSERVATION WELL LOCATION (2018)
•
SYNTERRA PUMP TEST LOCATION (2019)
B
S&ME CONE PENETRATION TEST / MONITORING
WELL LOCATION (2009)
- - 800-- -
EXISTING MAJOR TOPOGRAPHIC CONTOUR
S&ME PIEZOMETER LOCATION (2004)
--------
EXISTING MINOR TOPOGRAPHIC CONTOUR
S&ME VANE SHEAR TEST LOCATION (2009)
ASH BASIN WASTE BOUNDARY (APPROXIMATE)
S&ME CONE PENETRATION TEST LOCATION (2009)
ILF PHASE LIMIT (APPROXIMATE)
DUKE ENERGY BORING LOCATION
MAR-145 UPDATED ASH BASIN WASTE BOUNDARY
(APPROXIMATE)
EXISTING SITE FEATURE (APPROXIMATE)
NIOTF.q
1. "PHASE 2 SCOPE" REFERS TO THE SCOPE OF WORK PERFORMED BY AECOM AS PART OF THE PHASE 2
RECONSTITUTION OF ASH POND DESIGNS REPORT.
2. BASIS OF BEARINGS: NC GRID NAD83/2011. ELEVATIONS ARE BASED ON NAVD88.
REFERENCES
1. SEE SHEET MAR_C999.002.009 FOR GROUNDWATER MONITORING / OBSERVATION WELL AND PIEZOMETER LOCATION
REFERENCES.
2. SEE SHEET MAR_C999.002.002 FOR DRAWING REFERENCES.
P"=com
NOT FOR CONSTRUCTION
SUBSURFACE EXPLORATION
LOCATION PLAN AREAS 1 AND 2
MARSHALL STEAM STATION
CLOSURE BY EXCAVATION CLOSURE PLAN
CATAWBA COUNTY, NORTH CAROLINA
I N.C. ENGINEERING LICENSE NO. I FOR ISSUED FOR APPROVAL I
F-0342
SEAL
Alp
Il+i� �5r
DUKE SCALE: AS SHOWN
riLft5
DWG TYPE: •DWG
ENEM7l DATE: :2/ 3/2019'
FILENAME: BORING LOCATION PLAN.DWG
DWG SIZE I DRAWING NO.
DES:
DFTR
CHKD
ENGR
APPD
JMW
MAW
: RJ B
RJ B
JAB
REVISION
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x0
4 5 6 7 8 MAR_C999.002.011 I REV. A
/ ILF-2S/D I immmimm I I LEGEND
�-------- �_
____________ EX. GENERATO,R
AECOM PIEZOMETER LOCATION (PHASE 2 —_ —_ —_ _— — —_ REMOVE EXISTING ASH ROAD
� \ SCOPE)
_ _ _ _ -- REMOVE EXISTING HAUL/ ACCESS ROAD
GROUNDWATER MONITORING WELL AND SOIL
INDUSTRIAL LANDFILL (ILF). AND GROUNDWATER SAMPLING LOCATION ______ REMOVE EXISTING UNPAVED ROAD
PO , / / PERMIT NO. 1812 • REMOVE
EX. 48"HDPEPIPE , REMOVE EXISTING GUARDRAIL
p.0 � +� • / ASH BASIN WASTE BOUNDARY (APPROXIMATE)
• . ILF REMOE ti REMOVE EXISTING ELECTRIC POLE
�PIPE
• 0 �` �— PHASE I EX. 48vHDEXISTING SITE FEATURE (APPROXIMATE)
REMOVE EXISTING RAILROAD — — —
�� - - \ • \ ' / /
INDUSTRIAL LANDFILL (ILF) PHASE BOUNDARY
REMOVE MAR-145
�= = (
TEMPORARY STORMWATER / / APPROXIMATE) OE REMOVE EXISTING OVERHEAD ELECTRIC
FORCE MAN \ \ ' � / / I IPROPERTY BOUNDARY REMOVE EXISTING UNDERGROUND
�1"" j- \ \ • (SEE NOTE N / •\
1 // ;`` \ \ REMOVE EX. 48"HDPE PIPE l III , ELECTRIC
r
/ 1 \ \ • /� �\ I ` /1/ nww�n REMOVE EXISTING TREES / BUSHES
REMOVE EXISTING RIPRAP
II t%
�� II \� \ ���� \ • "• • • • • •" REMOVE EXISTING JURISDICTIONAL
II , ♦ •:.•.:...•. � • WETLAND
\ REMOVE
— —•——EX.48"
0' HDPE PIPE , REMOVE EXISTING FGD CONSTRUCTED
�
GWA-4S/D \\ � , \ - —
_ ---- WETLANDS TREATMENT AREA
\\ �� ; l \ \ O PROPOSED // REMOVEMW-4D NOTES
\\ \\ II �� ILF PHASE 11 —' +5� REMOVE MW-4
18 �OJ REMOVE
/�; ,`v J�' EX. GATE 1. SEQUENCE AND TIMING OF DEMOLITION TO BE DETERMINED PRIOR TO CLOSURE CONSTRUCTION BASED UPON
I 1 �`� — — —• I /j / / CONTRACTOR PHASING.
/ /
REMOVE //
ILF-1S/D/BR 1-1 , 2. SURFACE WATER INSIDE OF THE ASH BASIN WASTE BOUNDARY IS TO BE REMOVED AS PART OF THE ASH BASIN
DEMOLITION DEWATERING PLAN, WHICH WILL BE PROVIDED UNDER SEPARATE SUBMITTAL.
LANDFILL �
�— — — — — — — — — �� — j— — — — — — — PERMIT NO. 1804 3. BOLD ITEMS SPECIFIED ON THIS SHEET ARE TO BE REMOVED AS PART OF THE CLOSURE CONSTRUCTION ACTIVITIES.
III PROPOSED P5�/ R�,�o 4. FOR ANY HAUL ROADS LOCATED OUTSIDE THE ASH BASIN, CCR TO BE REMOVED FROM ROAD SURFACE, DITCHES AND
ILF PHASE III ���/ F SHOULDERS. REMOVAL OF HAUL ROADS MAY BE PHASED WITH REMOVAL OF CCR FROM ASH BASIN TO SUPPORT
I �/ QQ�+A,! HAULING OF CCR TO ON SITE LANDFILL. FOR HAUL ROADS TO REMAIN AFTER ASH BASIN CLOSURE, RESTORE LINE
AND GRADE USING COMPACTED SOIL FILL AND ROADWAYS SURFACING AS REQUIRED.
REM VE EX. PIPE
O
f EWM VE ` 5. MAR-145 STRUCTURAL FILL STORMWATER REDIRECT CHANNEL, TEMPORARY STORMWATER POND, AND TEMPORARY
1 1 FORCE MAIN WERE COMPLETED PRIOR TO IMPLEMENTATION OF CLOSURE. A PERMIT APPLICATION FOR THE WORK
1 I I I I • ` WAS SUBMITTED TO NCDEQ ON MARCH 20, 2018 AND CONDITIONALLY APPROVED ON JUNE 20, 2018.
REMOVE REMOVE` \ EWM EX. PIPE 6. CULVERTS BENEATH STRUCTURAL FILL HAVE BEEN ABANDONED IN PLACE BY GROUTING.
\ I I `t�1 / �'► �
ASBESTOS REMOVE / 7. MONITORING WELLS WITHIN THE ASH BASIN WASTE BOUNDARY SHALL BE ABANDONED IN ACCORDANCE WITH NCDEQ.
i I PROPOSED LANDFILL EWM
% 0 I ILF PHASE IV \70, / PERMIT NO. REGULATIONS.
l \� _ _ _ �v<� ° / 1804 ` 8. REMOVE TREES, BRUSH AND OTHER VEGETATION FROM ASH BASIN CLOSURE AREA AND PROCESS AND DISPOSE IN
�/_
I; I �� I REMOVE EWM ► ACCORDANCE WITH APPROVED VEGETATION MANAGEMENT PLAN.
I � ��� REMOVE EX. PIPE
/\ REMOVE MAR-145
/ EX. ILF PERORATE 9 \
LINE STORMWATER POND `rl i \� \� ® 9. DO NOT ENTER, DISTURB OR IMPACT EXISTING RAILROAD TRACKS AND INFRASTRUCTURE. MAINTAIN MINIMUM (SEE NOTE 5) SETBACKS FROM TRACK ESTABLISHED BY DUKE ENERGY.
EX. INV. EL. 824.05 '�
\
`yam I
I \� `r\ 10. EXISTING FREE WATER ELEVATIONS WITHIN THE ASH BASIN REPRESENT PRE -DECANTING WATER ELEVATIONS.
`\ REMOVE EX. GATE 1 �
1 I \� \ \ REMOVE MAR-145 TEMPORARY REMOVE
t STORMWATER POND FORCE MAIN _ 1 _ AB-16S/D/DU
PVSF-3S/D/BR \ ..1 — — — — — — — — — \\ — —
\ ( REFERENCES
SEE NOTE 5) 1
I1 REMOVE OB-3
I� 04 \ t oI (MW-7) 1. SEE SHEET MAR_C999.002.009 FOR GROUNDWATER MONITORING / OBSERVATION WELL AND PIEZOMETER LOCATION
G� REMOVE EX. PIPE
� REFERENCES.
2. SEE SHEET MAR C999.002.002 FOR DRAWING REFERENCES.
EX. 48" HDPE PIPE �\ �
\ \ ` \ REMOVE EX, / / REMOVE EX. CMP
PROPOSED \ \ H` E PIPE / ® REMOVE OB-2--
1� ILF PHASE V 1 ` \ EX 24" CMP (MW-6)
EX. INV. EL. 822.31 \ ` ' N
\ I ` \ REMOVES'
AL-4D/BR/BRL
I I \t -�
1804 LANDFILL
EX'INV. EL. 817.41 I ` SOP / \ PHASE 1 I
REMOVE \ \ �� �AY9�PJ PERMIT NO. 1804
I
\EX. 48" HDPE
PIPE -EX. INV. EL.,00O'
L 827>
I STRUCTURAL FILL
I PERMIT NO. CCB0031
I®
I
I
I
2 3 TENTHS 10 20
® PVSF-2S/D/BR \� I 9 %'o - / PS // l/ \
- _:'�EX. 60" HDPE PIPE
I I \
/
0l000
// � °�\\ � o zoo aoo 600
\ AL-2S/BR/BRL/BRLL/BRLLL
ABANDONED CULVERT, TYP.
(SEE NOTE 6) I I \ 0 GRAPHIC SCALE (IN FEET)
I o
czn� I
\ I og \\ \ \\ ;' NOT FOR CONSTRUCTION DRAWING KEY
ooi� �\ \;L�\ REMOVE
D DEMOLITION PLAN
Is 009
�o \ �'y\i
1 MARSHALL STEAM STATION
CLOSURE BY EXCAVATION CLOSURE PLAN
\� 0 \ CATAWBA COUNTY, NORTH CAROLINA
1 \ \ N.C. ENGINEERING LICENSE NO. FOR 10 10E-0342
ISSUED FOR APPROVAL
\ � \\ � \
1 I \\ \
/ �I 1 \ SEAL
EX. 30" CMP
/ REMOVE EX.
\ 18 / ASH ACCESS
oe REMOVE �// ROAD
\ \\ AB-14S/D/DU /
01 \
EX. INV.
EL. 821.74 08 o
30 4 5 6
CA
DUKE
ENEnm%f"2* xl()
SCALE. AS SHOWN
DES. JMW
DWG TYPE: .DWG
DFTR: MAW
JOB N0: 60603377
CHKD : RJB
DATE: 12/13/2019
ENGR: RJB
FILENAME: DEMOLITION PLAN.DWG
APPD: JAB
DWG SIZE
DRAWING NO.
REVISION
ANSI D
22.0"x34.0"
MAR C999.002.011
A
8 9 10
[--A--�
IWm_

MAR_C999.002.012 I REV. A
--
INDUSTRIAL LANDFILL (ILF).
PERMIT NO. 1812 • REMOVE
EX. 48" HDPE PIPE
ILF /
REMOVE
r 1 PHASE I EX. 48" HD�PIPE
� I � • l lI�
REMOVE EX. 48" HDPE PIPE l l II 1
\ REMOVE
— �— — EX. 48" - —
HDPE PIPE — -
4*
REMOVE
ILF-1S/D/BR
\7t
\c
PROPOSED
ILF PHASE V
�REMOVE
B-16S/D/DU
►1
REMOVE MW-4D
REMOVE MW-4
REMOVE
EX. GATE
1
DEMOLITION
LANDFILL
PERMIT NO. 1804
}. xF Ir
O /REM VE EX. PIPE
REMOVE
EWM
l
• / REMOVE REMOVE ` \\
XEWM EX. PIPE
ASBESTOS REMOVE 1000,
(REMO
LANDFILL EWM
PERMIT NO.1804REMOVE EWMVE EX. PIPE
REMOVE EX. GATE
r-\
1
REMOVE OB-3
(MW-7)
REMOVE EX. PIPE /
REMOVE EX,
REMOVE EX. CMP
HDPE PIPE
�i REMOVE OB-2---*
EX. 24" CMP (MW-6)
REMOVE
Al -4n/RR/RRI
14 Pam'
/ t�+
/ �0��
E
�\ AB-13S/D
f \
— F ti9G\
\
REMOVE EX. \
ASH ACCESS \
' ROAD
/ I
0 INCHES 1 2 3
1804 LANDFILL
(PHASE II)
PERMIT NO. 1804
AL-2S/BR/BRL/BRLL/BRLLL
�C
REMOVE
® AL-3S/D/BR
- EMO E
EX. FENCE
A
\I.
I �\
I \
\\ RE2 HDPE PIPE
TENTHS 10 20 30
O
=MOVE
M W-3
GWA-8S/D
/91x
1
• GWA-5S/D
x —x
—x —x
REMOVE
AB-1-1 S/D
REMOVE
M W-5
=x —
�O
ANT
'40,9
O
x —x
—
EMOVE MAR-145 TEMPORARY
STORMWATER FORCE MAIN
(SEE NOTE 5)
LEGEND
AECOM PIEZOMETER LOCATION (PHASE 2
_ _ _ _ _ _
REMOVE EXISTING ASH ROAD
SCOPE)
REMOVE EXISTING HAUL / ACCESS ROAD
GROUNDWATER MONITORING WELL AND SOIL
AND GROUNDWATER SAMPLING LOCATION
------
REMOVE EXISTING UNPAVED ROAD
REMOVE EXISTING GUARDRAIL
ASH BASIN WASTE BOUNDARY (APPROXIMATE)
p
REMOVE EXISTING ELECTRIC POLE
z
EXISTING SITE FEATURE (APPROXIMATE)
REMOVE EXISTING RAILROAD
INDUSTRIAL LANDFILL (ILF) PHASE BOUNDARY
m
(APPROXIMATE)
of
REMOVE EXISTING OVERHEAD ELECTRIC
PROPERTY BOUNDARY
REMOVE EXISTING UNDERGROUND
ELECTRIC
iwvwr�
REMOVE EXISTING TREES / BUSHES
REMOVE EXISTING RIPRAP
•• • • • • • •••,
...........
REMOVE EXISTING JURISDICTIONAL
WETLAND
REMOVE EXISTING FGD CONSTRUCTED
WETLANDS TREATMENT AREA
NOTES
SEQUENCE AND TIMING OF DEMOLITION TO BE DETERMINED PRIOR TO CLOSURE CONSTRUCTION BASED UPON
CONTRACTOR PHASING.
SURFACE WATER INSIDE OF THE ASH BASIN WASTE BOUNDARY IS TO BE REMOVED AS PART OF THE ASH BASIN
DEWATERING PLAN, WHICH WILL BE PROVIDED UNDER SEPARATE SUBMITTAL.
BOLD ITEMS SPECIFIED ON THIS SHEET ARE TO BE REMOVED AS PART OF THE CLOSURE CONSTRUCTION ACTIVITIES
FOR ANY HAUL ROADS LOCATED OUTSIDE THE ASH BASIN, CCR TO BE REMOVED FROM ROAD SURFACE, DITCHES
AND SHOULDERS. REMOVAL OF HAUL ROADS MAY BE PHASED WITH REMOVAL OF CCR FROM ASH BASIN TO
SUPPORT HAULING OF CCR TO ON SITE LANDFILL. FOR HAUL ROADS TO REMAIN AFTER ASH BASIN CLOSURE,
RESTORE LINE AND GRADE USING COMPACTED SOIL FILL AND ROADWAYS SURFACING AS REQUIRED.
MAR-145 STRUCTURAL FILL STORMWATER REDIRECT CHANNEL, TEMPORARY STORMWATER POND, AND TEMPORARY
FORCE MAIN WERE COMPLETED PRIOR TO IMPLEMENTATION OF CLOSURE. A PERMIT APPLICATION FOR THE WORK
WAS SUBMITTED TO NCDEQ ON MARCH 20, 2018 AND CONDITIONALLY APPROVED ON JUNE 20, 2018.
MONITORING WELLS WITHIN THE ASH BASIN WASTE BOUNDARY SHALL BE ABANDONED IN ACCORDANCE WITH
NCDEQ. REGULATIONS.
REMOVE TREES, BRUSH AND OTHER VEGETATION FROM ASH BASIN CLOSURE AREA AND PROCESS AND DISPOSE IN
ACCORDANCE WITH APPROVED VEGETATION MANAGEMENT PLAN.
EXISTING FREE WATER ELEVATIONS WITHIN THE ASH BASIN REPRESENT PRE -DECANTING WATER ELEVATIONS.
REFERENCES
SEE SHEET MAR_C999.002.009 FOR GROUNDWATER MONITORING / OBSERVATION WELL AND PIEZOMETER LOCATION
REFERENCES.
SEE SHEET MAR_C999.002.002 FOR DRAWING REFERENCES.
61 \\
/
6.
0 200 400 600
GRAPHIC SCALE (IN FEET)
+
+
EX. PHASE I SOIL
/ < BORROW AREA NOT FOR CONSTRUCTION
REMOVE
CCR-16S/D
0 GWA-7S/D
Ap
it
11 If /
CCR- REMOVE
REMOVE \ jj
MW-2 \ REMOVE
\\ AB-1 L/D/BR
// p /
-P/`/ / /
1.
\ �*
�* 2.
�* * 3.
5.
• GWA-6S/D
7.
6.
/
8.
+
1.
2.
/
+ l
+
MW-14S/D/BR
(APPROX. LOCATION)
DRAWING KEY
DEMOLITION PLAN II
MARSHALL STEAM STATION
CLOSURE BY EXCAVATION CLOSURE PLAN
CATAWBA COUNTY, NORTH CAROLINA
N.C. ENGINEERING LICENSE NO. FOR ISSUED FOR APPROVAL
F-0342
SEAL SCALE: AS SHOWN
DUKE DWG TYPE: .DWG
JOB NO: 60603377
ENERGY' DATE: 12/13/2019
1 ## FILENAME: DEMOLITION PLAN.DWG
'I ! DWG SIZE DRAWING NO.
ANSI D 22.0"x34.0" MAR C999.002.012
8 9 10
1 1
DES: JMW
DFTR: MAW
CHKD: RJB
ENGR: RJB
APPD: JAB
REVISION
A
A�
5w
i;

L. 821.74 I W I \ w
ABANDONED CULVERT �I I
LJ OC (SEE NOTE 6)
TE® o I I� I t
�o J �
TIF
i \
9
SOLAR FARM
of
a I I 9
I /
T® I I
I �
I� I�
I ,,
STRUCTURAL FILL I II \
PERMIT NO. CCB0031 \
/ / \ REMOVE
iAB-7S/D/DU
PVSF-1S/D/BR / �\
REMOVE EX. I \\ \
MISC. UTILITIES I
REMOVE (2) \
EX.10" DIP
AB-12S/SL/D/BR/PWA
REMOVE EX.
ASH ACCESS
ROAD
EX. SHE
'REMOVE EX.
' STORAGE
'.� REMOVE // r
c l I IAB-6SLD BR/BRA/BR / to
.01
CL
MW-11S/D04.
or
V
\yam -OE -OE pE-
30 OE STRUCTURAL FILL E c
ACCESS ROAD � I \'� �\ \
EX. FE
rt \
PERMIT NO. CCB0030 REMOVE EX. \18
STRUCTURAL FILL `� OB-1 \
IACCESS ROAD \\ • (ASH BASIN)
8
MAR_C999.002.013
I REV. A
LEGEND
AECOM PIEZOMETER LOCATION (PHASE 2 _
_ _ _ _ _ REMOVE EXISTING ASH ROAD
SCOPE)
REMOVE EXISTING HAUL /ACCESS ROAD
j"'oo
GROUNDWATER MONITORING WELL AND SOILAND
GROUNDWATER SAMPLING LOCATION
— REMOVE EXISTING UNPAVED ROAD
L
REMOVE EXISTING GUARDRAIL
/
ASH BASIN WASTE BOUNDARY (APPROXIMATE)
REMOVE EXISTING ELECTRIC POLE
q
EXISTING SITE FEATURE (APPROXIMATE)
REMOVE EXISTING RAILROAD
/ _
_ _
INDUSTRIAL LANDFILL (ILF) PHASE BOUNDARY
(APPROXIMATE)
cE REMOVE EXISTING OVERHEAD ELECTRIC
PROPERTY BOUNDARY
REMOVE EXISTING UNDERGROUND
ELECTRIC
—A—
REMOVE EXISTING TREES / BUSHES
REMOVE EXISTING RIPRAP
rii
REMOVE EXISTING JURISDICTIONAL
%•••••••••• WETLAND
REMOVE EXISTING FGD CONSTRUCTED
WETLANDS TREATMENT AREA
NOTES
1. SEQUENCE AND TIMING OF DEMOLITION TO BE DETERMINED PRIOR TO CLOSURE CONSTRUCTION BASED UPON
CONTRACTOR PHASING.
2. SURFACE WATER INSIDE OF THE ASH BASIN WASTE BOUNDARY IS TO BE REMOVED AS PART OF THE ASH BASIN
DEWATERING PLAN, WHICH WILL BE PROVIDED UNDER SEPARATE SUBMITTAL.
3. BOLD ITEMS SPECIFIED ON THIS SHEET ARE TO BE REMOVED AS PART OF THE CLOSURE CONSTRUCTION ACTIVITIES.
4. FOR ANY HAUL ROADS LOCATED OUTSIDE THE ASH BASIN, CCR TO BE REMOVED FROM ROAD SURFACE, DITCHES AND
SHOULDERS. REMOVAL OF HAUL ROADS MAY BE PHASED WITH REMOVAL OF CCR FROM ASH BASIN TO SUPPORT
HAULING OF CCR TO ON SITE LANDFILL. FOR HAUL ROADS TO REMAIN AFTER ASH BASIN CLOSURE, RESTORE LINE
AND GRADE USING COMPACTED SOIL FILL AND ROADWAYS SURFACING AS REQUIRED.
5. CULVERTS BENEATH STRUCTURAL FILL HAVE BEEN ABANDONED IN PLACE BY GROUTING.
6. MONITORING WELLS WITHIN THE ASH BASIN WASTE BOUNDARY SHALL BE ABANDONED IN ACCORDANCE WITH NCDEQ.
REGULATIONS.
7. REMOVE TREES, BRUSH AND OTHER VEGETATION FROM ASH BASIN CLOSURE AREA AND PROCESS AND DISPOSE IN
ACCORDANCE WITH APPROVED VEGETATION MANAGEMENT PLAN.
18 \ \�6 / / \� I I `q�OSROgO 8. DO NOT ENTER, DISTURB OR IMPACT EXISTING RAILROAD TRACKS AND INFRASTRUCTURE. MAINTAIN MINIMUM
"Q E \ • REMOVE EX. SETBACKS FROM TRACK ESTABLISHED BY DUKE ENERGY. CELL 2B
91 A 9. EXISTING FREE WATER ELEVATIONS WITHIN THE ASH BASIN REPRESENT PRE -DECANTING WATER ELEVATIONS.
REFERENCES
\ \\ '��/� `\ \ \�\� N�U�Ro o \\` REEOLL2AVE X • 1. SEE SHEET MAR_C999.002.009 FOR GROUNDWATER MONITORING / OBSERVATION WELL AND PIEZOMETER
LOCATION REFERENCES.
2. SEE SHEET MAR C999.002.002 FOR DRAWING REFERENCES.
\\ MS 16 \ \ 011 /� ! 012
•, a \REMOVE CONTRACTOR REMOVE:
b LAYDOWN AREA AB-4S/SL/D D
'I 16 9- ` REMOVE \ \ 0
/ / J \ EX. SHED REMOVE .-. \ \ to
�
II ° \'b\ EX. TRAILER
\ �\ / REMOVE I I / O \
FGD LANDFILL / ` / IL . w
AB-5S/D/DU/BR ` m'Li
\ PERMIT NO. 1809 �� �S \ / / om
( \ M \ REMOVE
0 ° \\ 'o \ 1 EX. GARAGE ' ' /��� / y REMOVE EX.
\ \ \ \\ \ STORAGE REMOVE
'' M EX. PIPES
—E \ ` \ �\ �`\ Il� \�\ g REMOVE EX. ` REMOVE
\ \\ f \ TRAILER
\ \\ \ e \ \ < �OOO AB 3S/D \ \ \
\ \ g Q REM VE \ \
O X. FENC \ \ \ \\
t \'� t�� \ �'� g \ ��� REMOVE EX. •I REMOVE EX. FIELD OFFICE v \ \ \
PPRODUCT TRAILER & SCALE / /; r•
�. + \ \� EX. TRUCK 1� \<2 `� / / REMOVE
`� + , \\ ` \ O /� / TRANSFER / // CP-1S/D
\ \ ` + N'` �/ i \� `$ a / / \ REMOVE EX.
\ \ \ • \ / EQUIPMENT
CIO ry'ry,
\ \ + + + + + + \ \\\ \ / REMOVE ��; DRY BOTTOM \ 9
\ \ + + C / so \ \� \ �' CCR-2S/D "+ae ASH SYSTEM
\\ \ REMOVE --\
\
—F \\ + + + + + \\ O\\ \`\ i �i� MS 14 \ \� CCR-1S/D �/ Naga+e o
LINED \ \ I \ \ kA
/
HOLDING \ / \ /
I I � • • j �� \ s� .1
BASIN \ // .•�..• "
+°
LINED \� � `� � \ \ / :•: / ��
\ \ \ \ / :•: .•'.•:' • COAL PILE �r `;, EX. PIPES
RETENTION BASIN \ g •,,; "
(PRIMARY BASINS) \ \ \ \ \ / �j • • • • • • • /
• \ \ •• � �•� • � +�,` COAL PILE
\ \ \ / •. .a„ RUNQFF BASINS
\ Y ••iiit••ii• `.
• MS-12� / / / \ `\\ \ `� j /
/ r/ \ � 16
0 INCHES 1 2 3 TENTHS 10 20 30 4
REMOVE EX. + �
REMOVE SAT. DISH
EX. DOCK
/1p
�REMOVE
AB-9S/D/BR /Ap
-- `` REMOVE
EX. FENCE p
REMOVE
EX. WALLA V
REMOVE
EX. SHED
REMOVE EX.
BIRD NESTS
m
`REMOVE EX.
J DRAINAGE MANHOLES
0 200 400 600
GRAPHIC SCALE (IN FEET)
m
�D
NOT FOR CONSTRUCTION DRAWING KEY
DEMOLITION PLAN III
MARSHALL STEAM STATION
CLOSURE BY EXCAVATION CLOSURE PLAN
CATAWBA COUNTY, NORTH CAROLINA
N.C. ENGINEERING LICENSE NO. FOR F-0342 ISSUED FOR APPROVAL
SEAL SCALE: AS SHOWN DES: JMW
GAR DUKE DWG TYPE: .DWG DFTR: MAW
JOB NO: 60603377 CHKD: R B
ENERGY J
� DATE: 12/13/2019 ENGR: RJB
FILENAME: DEMOLITION PLAN.DWG APPD: JAB
DWG SIZE DRAWING NO. REVISION
ANSI D 22.0"x34.0" MAR C999.002.013 A
9 10
I I

MAR_C999.002.014I REV. A
7 REMOV` �,'�a�
\ REMOVE SAT. DISH
\ EX. DOCK
\ REMOVE
\ AB-12S/SL/D/BR/PWA
N /61
0 \ �/
REMOVE
—A /j 4AB-9S/D/BR / Ap
clv
��REM``OVE /
• EX. FENCE
•� � REMOVE �/ �
EX. FENCE ��pp
MOVE y�?�(L �FX_ iR �w��
3S/D/DU PIPF
—E
—F
PO a%
O O
REMOVE �� l
EX. FENCE �� f REMOVE
REMOVE EX. PIPE
E . PIPE ��\O / m
�i REMOVE EX. Q REMOVE EX. \
CAPPED PIPES GRATE
REMOVE EX. FGD
CONSTRUCTED
WETLANDS REMOVE
V TREATMENT AREA EX. SHED
A� REMOVE EX. REMOVE EX. REMOVE EX.
CAPPED PIPES SHED BIRD NESTS
REMOVE
EX. SHED / REMOVE EX.—�
CAPPED PIPES
0/-
Al" EMOV R
FS + iA F �\ �\ E EX. WETLANDS ROAD
EX. FE
" , I / � / REMOVE EX.
REMOVE EX. �CELL 2C
\\ / GRATE _�RF440 FF
_ \ <q�Oq
�. . REMOVE EX.
CELL 2B
�� \ RFMOl,F
\ Fk.
` \ ` ASyNAU< FAO
1
--REMOVE EX.
J DRAINAGE MANHOLES
\
1 mr—muVC IiVIV 1 mV u 1 um
LAYDOWN AREA AB-4S/SL/D\ t)
\ \ \ i� \ \
REMOVE \ i;
\ EX. SHED REMOVE
/ I �EX. TRAILER \\�
1\ REMOVE
/
1P
AB-5S/D/DU/BR I' A 1 ` I..- 2i0�
i
REMOVE
EX. GA AGE `� t�f / y / REMOVESTORAGE REMOVE
EX. PIPES
sM
0VE EX.
MILER /"S REMOVE \ �\
X `(OOPO REMOVE AB-3O S/D ` \ \ O\
v
+�0 EX. FENCE \ \ \ \ \\
` O /�1\ \
�Po REMOVE EX. REMOVE EX. FIELD OFFICE
PETROLEUM TRAILER & SCALE
/ PRODUCT REMOVE 1 \ \ \
TRANSFER �/ / / ^ CP-1 S/D
/ \ REMOVE EX.
/ 'EQUIPMENT
REMOVE i
- CCR 1S/D �� %��
id`
COAL PILE
CP-2S/D
l/ / / .
EMOVE
CCR-2S/D
0 INCHES 1 2 3 TENTHS 10 20 30
MW-14S/D/BR
�0 • GWA-10S/D
va +
/ 1 \
CCR-14S/D `
AL-1 S/D/BR
(EX. 18" CM`IPE
CCR-1`
• GWA-15S/D
/ \ GWA-11S/D/BR jl
I OB-1 (DAF)—
/ 1804 LANDFILL \
/ C(R-12S/D (PHASE 1) \
PERMIT NO.1804 \
/ I
/ I CCR-10S/D
/ CCR-11 S/D
REMOVE EX. PRINCIPAL
SPILLWAY INTAKE STRUCTURE
REMOVE
EX. TANKS i
DRY BOTTOM
ASH SYSTEM \�
EX. PIPES
COAL PILE
`RUNQFF BASINS
G
Y X X / Y
EX. PHASE I SOIL
W.E.=
/�
770.1 BORROW AREA /� (APPROX. LOCATION)
REMOVE EX. CONCRETE ROAD
/I REMOVE EX. AUXILIARY SPILLWAY
(SEE NOTE 9)
-REMOVE
MW-6S/D /
� WTS
AREA
REMOVE EX. FILTER DIAPHRAGM
(SEE NOTE 9)
CCR-9S/D/DA /
EX. FRENCH DRAIN / ?`
/ AB-1 S/D/BR/BRL/BRLL
/ EX. 20" HDPE PIPE
CATWA-054-105 / 't / / + + + EX. 30" HDPE PIPE
+ +
REMOVE EX. ABANDONED `
SPILLWAY RISER %
CATWA-054-106
/ F.
REMOVE EX. OUTLET STRUCTURE
(SEE NOTE 9)
PDES PERMITTED
OUTFALL 00
EX. ASH BASIN DAM �f 'p / MW-8S/D
g X. 8"
$� PVC PIPE /
ova '- LAKE NO MAN
CATWA-054-P-103D/S •� �/' EX. PIPE W.E = 758.9
�MW-9S/ PIPES (2)
CATWA-054-104 /
EX. 10" PVC PIPE
/ • AB-2SC/D\/BR /
` 14 /
CATWA-054-100S/D
SEE NOTE 8
OVE
PVC l
0
•
•CCR-5S/D
/ °
CATWA-054-101
/ EX. 20" HDPE
f PIPES (2) CATWA-054-102
/0
/ X. STORAGE
/ AREA
CCR-4S/D /
SEX. BLOWER
EX. SILOS
/ f l
REMOVE EX. 36" HDPE PIPE
(SEE NOTE 9)
LEGEND
AECOM PIEZOMETER LOCATION (PHASE 2 SCOPE)
_ _ _ _ _ _
REMOVE EXISTING ASH ROAD
GROUNDWATER MONITORING WELL AND SOIL AND
REMOVE EXISTING HAUL / ACCESS ROAD
GROUNDWATER SAMPLING LOCATION
REMOVE EXISTING UNPAVED ROAD
ASH BASIN WASTE BOUNDARY (APPROXIMATE)
REMOVE EXISTING GUARDRAIL
EXISTING SITE FEATURE (APPROXIMATE)
ti
REMOVE EXISTING ELECTRIC POLE
INDUSTRIAL LANDFILL (ILF) PHASE BOUNDARY
(APPROXIMATE)
REMOVE EXISTING RAILROAD
PROPERTY BOUNDARY
of
REMOVE EXISTING OVERHEAD ELECTRIC
REMOVE EXISTING UNDERGROUND
ELECTRIC
A
nww�n
REMOVE EXISTING TREES / BUSHES
REMOVE EXISTING RIPRAP
•'•'• • • • • • •'•'
REMOVE EXISTING JURISDICTIONAL
•ii ii i iii •
WETLAND
REMOVE EXISTING FGD CONSTRUCTED
WETLANDS TREATMENT AREA
A 1 r1 T r r%
1. SEQUENCE AND TIMING OF DEMOLITION TO BE DETERMINED PRIOR TO CLOSURE CONSTRUCTION BASED UPON CONTRACTOR
PHASING.
2. SURFACE WATER INSIDE OF THE ASH BASIN WASTE BOUNDARY IS TO BE REMOVED AS PART OF THE ASH BASIN DEWATERING PLAN,
WHICH WILL BE PROVIDED UNDER SEPARATE SUBMITTAL.
3. BOLD ITEMS SPECIFIED ON THIS SHEET ARE TO BE REMOVED AS PART OF THE CLOSURE CONSTRUCTION ACTIVITIES.
4. FOR ANY HAUL ROADS LOCATED OUTSIDE THE ASH BASIN, CCR TO BE REMOVED FROM ROAD SURFACE, DITCHES AND SHOULDERS.
REMOVAL OF HAUL ROADS MAY BE PHASED WITH REMOVAL OF CCR FROM ASH BASIN TO SUPPORT HAULING OF CCR TO ON SITE
LANDFILL. FOR HAUL ROADS TO REMAIN AFTER ASH BASIN CLOSURE, RESTORE LINE AND GRADE USING COMPACTED SOIL FILL AND
ROADWAYS SURFACING AS REQUIRED.
5. EXISTING PRINCIPAL SPILLWAY INTAKE STRUCTURE AND AUXILIARY SPILLWAY REMOVAL DETAILS AND SEQUENCING TO BE FINALIZED
PRIOR TO CONSTRUCTION. ABANDONMENT OF ASH BASIN DAM AND SPILLWAYS SHALL NOT COMMENCE UNTIL REGULATORY
APPROVAL IS RECEIVED.
6. MONITORING WELLS WITHIN THE ASH BASIN WASTE BOUNDARY SHALL BE ABANDONED IN ACCORDANCE WITH NCDEQ. REGULATIONS.
7. REMOVE TREES, BRUSH AND OTHER VEGETATION FROM ASH BASIN CLOSURE AREA AND PROCESS AND DISPOSE IN ACCORDANCE
WITH APPROVED VEGETATION MANAGEMENT PLAN.
8. DO NOT ENTER, DISTURB OR IMPACT EXISTING RAILROAD TRACKS AND INFRASTRUCTURE. MAINTAIN MINIMUM SETBACKS FROM
TRACK ESTABLISHED BY DUKE ENERGY.
9. ABANDONMENT OR REMOVAL OF ASH BASIN DAM SPILLWAYS OR EMBANKMENT SHALL BE COMPLETED ONLY AFTER ASH BASIN DAM IS
DECOMMISSIONED AND REQUIRED PERMITS ARE RECEIVED FROM NCDEQ DAM SAFETY.
10. EXISTING FREE WATER ELEVATIONS WITHIN THE ASH BASIN REPRESENT PRE -DECANTING WATER ELEVATIONS.
REFERENCES
1. SEE SHEET MAR_C999.002.009 FOR GROUNDWATER MONITORING / OBSERVATION WELL AND PIEZOMETER LOCATION REFERENCES.
2. SEE SHEET MAR_C999.002.002 FOR DRAWING REFERENCES.
N
0 200 400 600
GRAPHIC SCALE (IN FEET)
NOT FOR CONSTRUCTION
DRAWING KEY
DEMOLITION PLAN IV
MARSHALL STEAM STATION
CLOSURE BY EXCAVATION CLOSURE PLAN
CATAWBA COUNTY, NORTH CAROLINA
N.C. ENGINEERING LICENSE NO. FOR F-0342 ISSUED FOR APPROVAL
SEAL SCALE: AS SHOWN DES: JMW
A DUKE DWG TYPE: .DWG DFTR : MAW
JOB NO: 60603377 CHKD: R B
ENERGY J
� DATE: 12/13/2019 ENGR : RJB
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W.E. = 758.9
PRINCIPAL SPILLWAY /
\ ; - INTAKE STRUCTURE /
/
NPDES PERMITTED
FALL 002
� ASH BASIN DAM
DRY BOTTOM wl1
ASH SYSTEM 1( (, f�_=--�\r;''�f)
/ it- lnll
DRY FLY ASH SILOS Ifil;ilii i 1 /i r // //i /'% -N,
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LEGEND
EXISTING MAJOR TOPOGRAPHIC CONTOUR
EXISTING MINOR TOPOGRAPHIC CONTOUR
ESTIMATED BOTTOM OF CCR MAJOR TOPOGRAPHIC CONTOUR
ESTIMATED BOTTOM OF CCR MINOR TOPOGRAPHIC CONTOUR
ASH BASIN WASTE BOUNDARY (APPROXIMATE)
MAR-145 UPDATED ASH BASIN WASTE BOUNDARY (APPROXIMATE)
EXISTING SITE FEATURE (APPROXIMATE)
INDUSTRIAL LANDFILL (ILF) PHASE BOUNDARY (APPROXIMATE)
PROPERTY BOUNDARY
A I /'1 T r (-%
1. BASIS OF BEARINGS: NC GRID NAD83/2011. ELEVATIONS ARE BASED ON NAVD88.
2. HORIZONTAL LIMITS OF ASH BASIN BASED UPON HISTORICAL TOPOGRAPHIC SURVEYS AND AVAILABLE
DESIGN DRAWINGS FROM DUKE ENERGY. ACTUAL LIMITS TO BE ESTABLISHED DURING CLOSURE.
3. VERTICAL EXTENTS OF CCR WITHIN ASH BASIN BASED UPON AVAILABLE PRE -DEVELOPMENT
TOPOGRAPHY SURVEY AND 2014 BATHYMETRIC SURVEY. ACTUAL DEPTH OF CCR TO BE DETERMINED
DURING ASH BASIN CLOSURE.
4. THE STRUCTURAL FILL ACCESS ROAD TO BE EXCAVATED AND REMOVED AS PART OF ASH BASIN
CLOSURE. EXCAVATION GRADES SHOWN ARE APPROXIMATE.
5. CCR EXCAVATION GRADES ADJACENT TO CCR TO REMAIN IN PLACE INSIDE HISTORICAL ASH BASIN
LIMITS TO BE ESTABLISHED AFTER ENGINEERING ANALYSES BASED UPON CONDITIONS AT THE TIME
OF CLOSURE ARE COMPLETED. SLOPES SHOWN NOT TO EXCEED 5-HORIZONTAL TO 1-VERTICAL FOR
PLANNING PURPOSES.
6. CCR WITHIN THESE AREAS WAS PLACED IN SUPPORT OR AS PART OF THE DISPOSAL FACILITY. IT WILL
REMAIN IN -PLACE AFTER CLOSURE.
REFERENCES
1. SEE SHEET MAR_C999.002.002 FOR DRAWING REFERENCES.
DRAWING KEY
N
NOT FOR CONSTRUCTION
ESTIMATED BOTTOM OF CCR
CONTOUR MAP (OVERALL)
A"=com
MARSHALL STEAM STATION
CLOSURE BY EXCAVATION CLOSURE PLAN
CATAWBA COUNTY, NORTH CAROLINA
N.C. ENGINEERING LICENSE NO.
FOR
ISSUED FOR APPROVAL
0 500 1000 1500 F-0342
SEAL
SCALE: AS SHOWN
DES:
JMW
GRAPHIC SCALE (IN FEET) k\ CAc5ssRS
DUKE DWG TYPE: .DWG
DFTR:
MAW
JOB NO: 60603377
NF�G1C
CHKD:
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DATE : 12/13/2019
ENGR :
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#
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FILENAME: EXPECTED BOTTOM OF ASH.DWG
APPD:
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REVISION
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1 \\ 1\
1 1\ I11111
SEE NOTE
\I\'r r
1 ` 1
co
SEE NOTE 6
�\W�
5:1 MAX
18
?80
D
LEGEND
— —8i5— - EXISTING MAJOR TOPOGRAPHIC CONTOUR
EXISTING MINOR TOPOGRAPHIC CONTOUR
775 ESTIMATED BOTTOM OF CCR MAJOR TOPOGRAPHIC CONTOUR
770 ESTIMATED BOTTOM OF CCR MINOR TOPOGRAPHIC CONTOUR
ASH BASIN WASTE BOUNDARY (APPROXIMATE)
MAR-145 UPDATED ASH BASIN WASTE BOUNDARY (APPROXIMATE)
EXISTING SITE FEATURE (APPROXIMATE) A—
INDUSTRIAL LANDFILL (ILF) PHASE BOUNDARY (APPROXIMATE)
PROPERTY BOUNDARY
ni nTr-: c
1. BASIS OF BEARINGS: NC GRID NAD83/2011. ELEVATIONS ARE BASED ON NAVD88.
2. HORIZONTAL LIMITS OF ASH BASIN BASED UPON HISTORICAL TOPOGRAPHIC SURVEYS AND AVAILABLE
DESIGN DRAWINGS FROM DUKE ENERGY. ACTUAL LIMITS TO BE ESTABLISHED DURING CLOSURE.
3. VERTICAL EXTENTS OF CCR WITHIN ASH BASIN BASED UPON AVAILABLE PRE -DEVELOPMENT B—
TOPOGRAPHY SURVEY AND 2014 BATHYMETRIC SURVEY. ACTUAL DEPTH OF CCR TO BE DETERMINED
DURING ASH BASIN CLOSURE.
4. THE STRUCTURAL FILL ACCESS ROAD TO BE EXCAVATED AND REMOVED AS PART OF ASH BASIN
CLOSURE. EXCAVATION GRADES SHOWN ARE APPROXIMATE.
5. EXCAVATION GRADES ADJACENT TO CCR TO REMAIN IN PLACE INSIDE HISTORICAL ASH BASIN LIMITS TO
BE ESTABLISHED AFTER ENGINEERING ANALYSES BASED UPON CONDITIONS AT THE TIME OF CLOSURE
ARE COMPLETED. SLOPES SHOWN NOT TO EXCEED 5-HORIZONTAL TO 1-VERTICAL FOR PLANNING
PURPOSES.
6. CCR WITHIN THESE AREAS WAS PLACED IN SUPPORT OR AS PART OF THE DISPOSAL FACILITY. IT WILL
REMAIN IN -PLACE AFTER CLOSURE.
REFERENCES c_
1. SEE SHEET MAR_C999.002.002 FOR DRAWING REFERENCES.
DRAWING KEY
(SEE SHEET MAR_C999.002.015)
0 200 400 600
NOT FOR CONSTRUCTION
GRAPHIC SCALE (IN FEET)
ESTIMATED BOTTOM OF CCR
CONTOUR MAP I
MARSHALL STEAM STATION
CLOSURE BY EXCAVATION CLOSURE PLAN
CATAWBA COUNTY, NORTH CAROLINA
N.C. ENGINEERING LICENSE NO. FOR F-0342 ISSUED FOR APPROVAL
SEAL
CA
� rLss
1
oofft� DUKE
n
ENElk%.2 Y�
SCALE: AS SHOWN
DES: JMW
DWG TYPE: ,DWG
DFTR : MAW
JOB N0: 60603377
CHKD: RJB
DATE: 12/13/2019
ENGR : RJB
FILENAME: EXPECTED BOTTOM OF ASH PLANS.DWG
APPD: JAB
DWG SIZE
DRAWING NO.
REVISION
ANSI D
22.0"x34.0"
MAR C999.002.016
A
10
I
i
P
:-i
to
to
tc
O
0
N
0

MAR_C999.002.017 I REV. A
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LEGEND
EXISTING MAJOR TOPOGRAPHIC CONTOUR
EXISTING MINOR TOPOGRAPHIC CONTOUR
775 ESTIMATED BOTTOM OF CCR MAJOR TOPOGRAPHIC CONTOUR
770 ESTIMATED BOTTOM OF CCR MINOR TOPOGRAPHIC CONTOUR
ASH BASIN WASTE BOUNDARY (APPROXIMATE)
EXISTING SITE FEATURE (APPROXIMATE)
INDUSTRIAL LANDFILL (ILF) PHASE BOUNDARY (APPROXIMATE)
PROPERTY BOUNDARY
NOTES
1. BASIS OF BEARINGS: NC GRID NAD83/2011. ELEVATIONS ARE BASED ON NAVD88.
2. HORIZONTAL LIMITS OF ASH BASIN BASED UPON HISTORICAL TOPOGRAPHIC SURVEYS AND AVAILABLE
DESIGN DRAWINGS FROM DUKE ENERGY. ACTUAL LIMITS TO BE ESTABLISHED DURING CLOSURE.
3. VERTICAL EXTENTS OF CCR WITHIN ASH BASIN BASED UPON AVAILABLE PRE -DEVELOPMENT
TOPOGRAPHY SURVEY AND 2014 BATHYMETRIC SURVEY. ACTUAL DEPTH OF CCR TO BE DETERMINED
DURING ASH BASIN CLOSURE.
4. THE STRUCTURAL FILL ACCESS ROAD TO BE EXCAVATED AND REMOVED AS PART OF ASH BASIN
CLOSURE. EXCAVATION GRADES SHOWN ARE APPROXIMATE.
5. EXCAVATION GRADES ADJACENT TO CCR TO REMAIN IN PLACE INSIDE HISTORICAL ASH BASIN LIMITS TO
BE ESTABLISHED AFTER ENGINEERING ANALYSES BASED UPON CONDITIONS AT THE TIME OF CLOSURE
ARE COMPLETED. SLOPES SHOWN NOT TO EXCEED 5- HORIZONTAL TO 1-VERTICAL FOR PLANNING
PURPOSES.
6. CCR WITHIN THESE AREAS WAS PLACED TO SUPPORT OR AS PART OF THE DISPOSAL FACILITY. IT WILL
REMAIN IN -PLACE AFTER CLOSURE.
REFERENCES
1. SEE SHEET MAR_C999.002.002 FOR DRAWING REFERENCES.
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LEGEND
EXISTING MAJOR TOPOGRAPHIC CONTOUR
EXISTING MINOR TOPOGRAPHIC CONTOUR
775 ESTIMATED BOTTOM OF CCR MAJOR TOPOGRAPHIC CONTOUR
770 ESTIMATED BOTTOM OF CCR MINOR TOPOGRAPHIC CONTOUR
ASH BASIN WASTE BOUNDARY (APPROXIMATE)
EXISTING SITE FEATURE (APPROXIMATE)
PROPERTY BOUNDARY
NOTES
1. BASIS OF BEARINGS: INC GRID NAD83/2011. ELEVATIONS ARE BASED ON NAVD88.
2. HORIZONTAL LIMITS OF ASH BASIN BASED UPON HISTORICAL TOPOGRAPHIC SURVEYS AND AVAILABLE
DESIGN DRAWINGS FROM DUKE ENERGY. ACTUAL LIMITS TO BE ESTABLISHED DURING CLOSURE.
3. VERTICAL EXTENTS OF CCR WITHIN ASH BASIN BASED UPON AVAILABLE PRE —DEVELOPMENT
TOPOGRAPHY SURVEY AND 2014 BATHYMETRIC SURVEY. ACTUAL DEPTH OF CCR TO BE DETERMINED
150 DURING ASH BASIN CLOSURE.
775
4. THE STRUCTURAL FILL ACCESS ROAD TO BE EXCAVATED AND REMOVED AS PART OF ASH BASIN
CLOSURE. EXCAVATION GRADES SHOWN ARE APPROXIMATE.
�t 5. EXCAVATION GRADES ADJACENT TO CCR TO REMAIN IN PLACE INSIDE HISTORICAL ASH BASIN LIMITS TO
BE ESTABLISHED AFTER ENGINEERING ANALYSES BASED UPON CONDITIONS AT THE TIME OF CLOSURE
/ ARE COMPLETED. SLOPES SHOWN NOT TO EXCEED 5—HORIZONTAL TO 1—VERTICAL FOR PLANNING
PURPOSES.
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REFERENCES
1. SEE SHEET MAR_C999.002.002 FOR DRAWING REFERENCES.
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(SEE SHEET MAR_C999.002.015)
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MARSHALL STEAM STATION
CLOSURE BY EXCAVATION CLOSURE PLAN
CATAWBA COUNTY, NORTH CAROLINA
N.C. ENGINEERING LICENSE NO.
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LEGEND
s� EXISTING MAJOR TOPOGRAPHIC CONTOUR
EXISTING MINOR TOPOGRAPHIC CONTOUR
775 ESTIMATED BOTTOM OF CCR MAJOR TOPOGRAPHIC CONTOUR
770 ESTIMATED BOTTOM OF CCR MINOR TOPOGRAPHIC CONTOUR
ASH BASIN WASTE BOUNDARY (APPROXIMATE)
EXISTING SITE FEATURE (APPROXIMATE)
PROPERTY BOUNDARY
AIf\TrC1%
1. BASIS OF BEARINGS: NC GRID NAD83/2011. ELEVATIONS ARE BASED ON NAVD88.
2. HORIZONTAL LIMITS OF ASH BASIN BASED UPON HISTORICAL TOPOGRAPHIC SURVEYS AND AVAILABLE
DESIGN DRAWINGS FROM DUKE ENERGY. ACTUAL LIMITS TO BE ESTABLISHED DURING CLOSURE.
3. VERTICAL EXTENTS OF CCR WITHIN ASH BASIN BASED UPON AVAILABLE PRE -DEVELOPMENT TOPOGRAPHY
SURVEY AND 2014 BATHYMETRIC SURVEY. ACTUAL DEPTH OF CCR TO BE DETERMINED DURING ASH BASIN
CLOSURE.
4. THE STRUCTURAL FILL ACCESS ROAD TO BE EXCAVATED AND REMOVED AS PART OF ASH BASIN CLOSURE.
EXCAVATION GRADES SHOWN ARE APPROXIMATE.
5. EXCAVATION GRADES ADJACENT TO CCR TO REMAIN IN PLACE INSIDE HISTORICAL ASH BASIN LIMITS TO BE
ESTABLISHED AFTER ENGINEERING ANALYSES BASED UPON CONDITIONS AT THE TIME OF CLOSURE ARE
COMPLETED. SLOPES SHOWN NOT TO EXCEED 5-HORIZONTAL TO 1-VERTICAL FOR PLANNING PURPOSES.
REFERENCES
1. SEE SHEET MAR_C999.002.002 FOR DRAWING REFERENCES.
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illy/Illl,illl.,„I� O O �- I,,. I'llll I //// = 9 —=i \`\\�` ```" " N' \,� \ 1 \\- ! I \\rc _-' _ i 1 I I I \ \ \ \ `\
'VIll .1 1Lr) o F4 � O �.rl 11111�11I 1 I ILF PHASE II ,/ __Sox = r \\\\\`: \.\`:,• \�\, 1\\\I �` PROPOSED ILF EXPANSION \ \\ 1 \ \ 11 / \.\ \\\\ \\ --� �,, \ " /l1 1\\\ \\\\\\
o L u \\\ \\ \\\\\ \ \\ \1 .xIll/ )} \\\ 1 \ \\\\!\\ �` �.
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\\
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off If I, 7 II •G• /////iiiiai/�/ === -____ �- \\\\ \\`\\\\„ 1111111 111 , BOUNDARY (SEE NOTE 6 ��.x',x
1 / I I I I II III I 19x / r -- -_ - ,$ I \ )
■ 1 /'ll'l/l,ll�ll,l l� ��/.il,,,��,!I�I�II li,. O� l /// ///////// _ _ =_1000_ \\� O I \ 1 1 1 \ \\ vI
■ IIIIII IIIIIIIIIP ' i/ii�ii/i/ _ --=i= -__ `�►\�' \\,\\\ IIIII 1 1111 1111 \� XO ' //\�\
I <
I`I PROPOSED illllll Ill( / ,/ IIIII/ _ �\ \ j11 1 1 1 1 t \I
■ I II II Ill '//'/iiiii//-'1025=i \ `\ 111/�'/ 11 `�
■ II I 1 / IIIII /r�\����� - \ / \\\ \ �-- ., \\\ --� \� \\\ � ��J/I / '
■ � hul ILF PHASE III IIIIIII I I�/i�//i//////��/ ������� � � I' �� � 11\1 11 11� 1 111111111111 1 I / J / / \ I \ --'/ Jl/ - �-\ \ // � /\t \ \\\ \__ �\� \ `'t-��.\ \\\\ \ `� ---- f .
I I, � i � �• IIIIII ///// ///// / � � �� \� 1 1 1 1
■ I Illlllljljllllllllllllllljlllllllll'Ij1111111 II II //////////�///,�'j// ����`��`� � I J 1 11 1 1 j1 11 1111111 �11 1�1}� 1 `\////j ,/ �- \ \ ` I I \ f \\\`\\1 \\\ \\ ��� �1\� �\\\
♦L 11 I I I ul f} I 1I �l L/ ///// / nr9t 11 1 V%irhllllll , a\ CHANNEL 603--//'i/il //: \\\`\` -' 11� �\ \\ I \ . \—_= i
■ I ITIIj�llllµl�4l�l�l�jllljjl�Ikj�IFI II jI/�j/�'"ilr�♦~� �� ♦R,)1111111111 IIIIIIjy1N111\I11111111 �` �/ //// / / //i ���� _� J _ ``\�\ \\\\I\\\\ \/ /�-� \\ * 1 \\\\\�1�
■1 IIIIIIII(II((llIII'lI111lIIIlIIl11111111 IIIII,/// _/,Ilt\\I IIyI�1\It11�1111111111111111 , , S9 i// l - 1 �i/,,� \\ _- /� \ \\\\\1 \\\\\\ 1\\_�^ 1 1 1 \ x�\`\�'�— =- \\II/
IIIIIIIII I II I Illljljl�/��/ PROPOSED ��\\ ♦�_lillll+lll ,i�llll�lllllllllll, , /% X 4 D / I // /\\_ _�!� I 1111111 llll i
�\� � � �� � 1 � 1 1 //'_/' I ' / i 6 %'�% // \\ / /(/ \ � ` O \"//� 1 I I •- � \\\i /'�_���\%/ ll'
I II II I I I I I 11111�// // �� 'I�1 1j 11 I1� j I'll1111 '/ \ ' / , / i� / / \ I 1 1 1 _ \ // 1 11 11111 � /^I I I l \
11 1(MIIIIII�I1111(, 1111111111111111111 III 111�//j/// ILF PHASE IV ��� 11+\�111\1�1�1111111 'l '' -8 IJ ' I '/ \ \\\\\I\\ \I ••' ��� :�./i IIIIII i '�,1i1 i I /�--�\� `'
/ / / / -
I1�111 IIII1111� I111111111111111 111IIIIII_� //j / /l/ /// F\� ���������i 4� 'IIIII 1111111 //� i I �^ l l r'// ////%/%' /' \\ \\\\\\ 1 �, `� -�' j III I �/ II 1 �.' 1 '`\ i
I I I1 11 I I I 7T"�" / 1 / t III 1
\%, /ii i/'// /i: \ CHANNEL 506 ll I I ll llllll �il�l(II11111111 .1111111111�///////// ////%//i//e //j //4 >�� 1�z< //III II \ �l \' 6 / �' , /� � // /� / ^\ \ \\ \ \1\ 1 O \�� = //l/j ,l 11I1 I 1 �/' \ \ - %/1 \"//
\\\\\,��,/�,,//,�/ �I II III�1;7p%I,Il t=1�1L�I#1' 'G / //���/ h'%-��������JI� \`:iii(/11 4 11 1/ ///% ( I I\ \\\ G.1���-11\III I / /-�\\\------
\\ /'''i/i'/iii/ i% \� \ ♦ I1J�111�IIIlI(',,O " IIII���� ''a�i'/'i7/'.1/T/77, rl// -0. - - ///,mil I -/ _
\ \ 1///:,•,/, // - ; ♦ 11 II 11 11 I I III l •� "�-:'// 1J��t SEE NOTE 3 ( i % \
I
lI / ///�/� // iij \ ♦ I II I IIIIIIII llllll II II�I����� PROPOSED
I l l / // /i� ` '�) ♦ Il II (I1111(IIIIIII(IIIIIII
Il \ II II /I / !///,, �, I \ �I I ( �� I I� II IIIII lil ((111 '/l%/// ///%////l - �-�J► ► �- � QO O = =_;_, ��\,\` \ \ \y� I •II1I \\�' JILF PHASE V
/
Il I IIIII'1 I l/Il !� 1( j IIIIIII�II�`I`�I\ �i r/i//i'//l/`j j/ll//j/ �•1
\ ) III 1 ll ♦ YI C! •fries// \ _/I
\\`1111 Il II III 11 \` ♦ /. /i �\� //^��\� l 1 \ 1//,�`\� \ \ 1 /1\\ /,� 1 ♦_ , I \ /
///ii'i'//i//// / \ llllll / l \ Ill /I/ i -\ \ 11 I� \ /
CULVERT 505 %,..� //.�lj l \\ / / ' 1 • CHANNEL 602 \�, 11IIIII/ / �'i r111 \%'/ \1`\ \ \`_` '��i �-
/ \ Q , \\ 1 S v// llll \ l III /_ //, //
\\\\, ll I►I 1 k 0 s:..�.. /„ I 1804 LANDFILL Ox llllll \;, 1\��_/A,—
\ - /IIIII / e Q ll Il I \ /// / N. \ \\\\\\\ J \\ /�>� / / \ I I / ! 1 \�-
\`�I 11 III IIII 1 '' ■ // '/ ` A ( ) Q 0 i i ( i `I Q- /'1111/l1 , \ \ \:__ .
\� 1 I I11 ■� CHANNEL 504 ,•� ♦ PHASE II e / l \ \
\I
PERMIT NO. 18
+00; ��/i/// /. \ `� ♦ 04�' d' ,/ / //.1 �/ / !/��.. T Il �_ �\\\ .• \ \\ 1// \
\\ I llllll00 `,,, / /ii/ / �P / `
` I Ile 1 ��, ♦ \ //i��• / i i / / 11 ` \
\\\\\\ I I SEE NOTE 3 8 : i \\1\ \ ' Q - •3 ' ` � \ \ \\ \ 1 / / 1 \ `1\\ `\\`\� `` `�,'1 ! \"\\ I J \.• i \ "�i- I
8 OX �� /^ ♦ \\\\ \\\ i �^ /,' /1 \ \ \ I I I \� I \\ \ \ I
%/ Illll �llll ' 0"Op 8�S O �i00 �`/�\\ ♦ \\\� //////,�/�//i �f/l�, //////// r /' /llljlj I I , II 1 \\ \ \ \ 1 1 I I I \ , \ \�\�\� �\\,\\\���
• \ \ l \ \\ \ \
- / Il III I / ■ 8S0 _ / ♦ \ ! / / // \ / ///A / -/ /////1//l + l \ \ \ �jl I 1 / \ \\\ \ \\\
/ ♦ 3 \• 1 / / //�. �'I I '/ //// / 1 - _ / \ / \ / I \
I I 1 11 ,I I PROPOSED ■ g ._� -' I� O � � + i/ii /ii /G, • /;;� r / \/,i \ ` /� ,/// / / \ \ \ \ \ f�\ 1 I I \�\ \ \
lJ G p 1 1
-ll ■ ACCESS ROAD \
f\ • _ s \ _ \ 1 I \ /iii /� // / I I I I \ 1 \ \ \ \ / \\\-- \ 1 / I
■ /� _, � \ � �\Oyt\__�i%' II I{I ■jll(1' \ I I � "i'/' %/ / / 1 J I I I I \ \ � � '/ jll) `\ ``\\ ` I 1 \ / r1 l `-�
=� ■ _� ,�//, _ _ CULVERT 500 -_ I I \\\` //i \.\\ /r �// / l I 1 /\\\ \ , 1 \ \/t , / I
CHANNEL 501 /�/'�/:� � _=�'/ \ r Ill �\\\\ / ' //. / / / /- / I I > J PHASE I SOIL (1 \ \ \ / �1 .'i' I __,1 /
II / CHANNEL 601 /� 1 / / \ \ /
I ■ ■cr 1'1 - / / , x \\ \,- �. �'�s lv !`i11 <- /,�r/ -- �\ �`. \ \c\`\� \ \\\\\ t t \ 1 i ' BORROW AREA \ \ '- \ /\
\ \ \\ 4�" \� �0- \ / 1
CULVERT 502 %///„' \ __ ` `? \ \ I n I It O /� //r \� `\ \ \ \\ \ \ \� \ \ \
STRUCTURAL FILL - -_�� \ \ \ \
\ ■ \I I)//-_-�- \ ` ` `\ ♦� IIIIII O IUI ' ` \ \\ 4\ \\,\\\ \_ \\. \\ I 1
IIIII ♦ - ,\- , / \ ♦ Ill I \ /� \\ (APPROX. LOCATION) / / \� "\\
1j 1 PERMIT NO. CCB0031 ♦ //l //i'i /iii __;-\ \ ` ` \ , •. Il I \\\\� \ \ I \ \\\ \\I 1I \ r _ / \ / I \ ► li I \1 ��_�
/)/ // \ ` \ .�� " �' II CULVERT 600 \ \ \ I1 j1. 1804 LANDFILL \.-,,__-,/ /
�11■ I II ♦ % � / �\ �/i,�/��// `//� ��:_`.,� `'\I 'II �� `�`\ \`\ -III / 1�// // / /// � �\ ` -•
\ \\ •�■r ♦I4y/ ! /\\///! .!/ /// / ,\ ��" �+�l�\\\�-/j / \\II\\ // / , o // (PHASE 1)
CHANNEL 503 ♦t� �'1 \ //2 ;/ / /•�_ ,-\\, \ \ \\ \ /,�/ / 4 ) I \
\\ ■\�`�\�\ ' // OX I' \\ \ I '; iil \ /' / ,/,'% �� S"Q C ti, ill/ PERMIT NO. 1804oil, <
SEE NOTE 3 i ''il Il r 2p
1 \ _ x 1 \ - • \III
\\\ \ ( III / \ 1
\�,�\ = � ■ 1 11 �-% �l I 11 � /l i \ \ ,- `---''� / \ 1 - I1
`» \ ® \ P, i� \II 1\ �\ I ,� 1 /! \ \ \O '
\� � .w• ■1 1 � �\ it / III / r \ \ / l \ \ \b-• / /
i�► o ■ 1 ''%i 1 1 I , / 1 \ \ \ 1-- -` _ / /I/ \\\ ' 11 1\\\ \ \ \ \\ </ /
♦ � � o I I I / �, 1 / \ II \ ` \ \ �\ - � I \ � 1 � \\\
♦i ■ 1 < II \IIIII/ l ! \ \ /% \ I I1 \ ` \ �\ \\ \\ 4p • • i \1 \\\ \ \\\ \ \ �./ _ / /
1 \ \\
\ \ \ \ \ _ /l I \ \\ \ X \\ \ \ / } I 1 1► I / / I
�� oo ■ 1 III I I"if /j 1 I I \\ \ \ \ \ `--- I _ ��\\�\� \ \ \ ��\ ♦ \ I I 11)\. \\.`« �.\\ \. \ \,/ I I I 1 1 / ! I I
♦ � ■ \ I , I l r l i � I 3 � - \� `�' -\ QO � \ ■ I 1 \
� !l1 �' I ,\ \ / \ \ \ \ \ \ I Oxo \_�\\\\ - \/ / ,� � //I I\♦
■ SOLAR \ ■\ 1 ,/l, 'i/l 11, 1 _ 1 \ \ \\__-\) I I \_ O� _--- \\ \ ".' „ I r�� / 1 1 ♦ PROPOSED PONDED WATER BOUNDARY
■® FARM \\ / /Il"'/ I 1 \' \ ' / l / .-'�'� __ �- ��\\ '4>34\\\ tJ� ,/ ll II�i \\ \\ ■ \\„i �` i n/ 111
\ /� PROPOSED _ -- \ \\` x �/ . I I I 111 \ \\h \\\ \`.�_ \\`*`<
\\, •\ / \\'' /,/ l 111 l / //n / // iii i �`\ `\\ \ \ ��__ / / , / ♦ \ \� \\ \ \ �. 1 \ \ i-
■ n HAUL ROADK,� - l \`�
I O
I KQ
♦ \\\ \
/, / / / -� III / \�\\\\\\\ \`\ \ 1 \,__%> !/ / 1 ■ - ull� PROPOSED HAUL ROAD I I 1 t ,, 1 \
II/\\\\ \ \`�• �X // / / / �_--- 11 P . 1 11\11 \\ / / / / \ \ t l\\� \ \ \ \
i�11111 1 \11 I � _' % I l I / / I !/ 3 �\ \ \ `�-_ \\- \�
I \ \ \ I 1 \ (\ O B\\\\ \
ci i t I Ii t1 \ \ ` ` \ \1 \ --- N, "Op \ q \ PROPOSED NPDES \ \
STRUCTURAL FILL / '1`=''� /I `--__ '-' //" l /, 1 \ `J'` ♦ 1.\ `�Q ,PERMITTED OUT="' ' \\ \
UA
ACCESS ROAD i► l/ \ \>s_-/i/i/i/i/'/%// // /i'//// //// / %Y3 /_� /�/ /���i��i'/'i/i/�/i/�iis r _> •-•_le\ _ \- \ \-1Ir\-L '-//\ I 'i��\� I \/,I 1/J2/ O0I \•
CHANNEL 401 /
` •\\'I `\
-
//xo �PERMIT NO. CCB0030 -
was ♦ 90
fill/ / IIIj 60 00 I\ !"iI '
, CHANNEL 100
N N��Ali
C�
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nZ� il� -
PROPOSED— i N. III \` IN \ I � i%���\�_=' 470-.0
O ACCESS ROAD \
�(\ \\ • ,• �'/��`/ III \\ \-_- / 11 I�`�\\� \
CULVERT 300kk \�
IN
4.
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`\�� PERMIT CHANNEL 301zz
1 `\ \ \ \\♦ `\\\\\�\�,�1 \ \\\i III / `t 3\r ,
A,.\\\\:�'►\`�� .�o CULVERT 200IS
� `� \ �� \\\'\\ '•�• /\i\\\�•• j /ram\� `
CHANNEL 201
■ / � \� . .1//�t\�\ \\ \ 0. ♦N � ) • COI/ / / I
■ 1 1 ` \ V �-46,0*��% «, \\` \\\\\\\ � \ `\
■ I LINED ■ `�\ \���, \�1� I ���4 ,�! ` \\\.
�-'II '%% / l I I I I 1 \ 1 j11 j 1 I l/ - �i i'\ I I ♦� �'�
/'jam
�\ I 111/l // �I� 1j1,////�11�\
� I//I�%,\\�\\ //\0_'2\ I
`_` � -- � \ � _ ` \� � \ \ \\\ \ 1 I I I 1 III I I l / / , IIIII I II �Q \�--' � �%/i• QO
10
Ulf
/rx-off/= -:`i\\'%'-� iiii\i i 1� NPDES PERMITTED
_
/----' x';' /p% .i �, OUTFACE 002
•\` \ /' =-- �__- \ `\ \ \ / / / i /'� . \. \ `��\i// \\\\\\ii1�0 � ASH BASIN DAM
\
N \1 I I/II/11//11 /// / / �/ /,�`
-•/- ,,/.rr/.��/,'/sue-. \\\ 1l\v,// / /
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■ RETENTION �.�\\ i{I�_
BASINS �/ `\���1'h�' \\�\
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\ I I I I' l/vJ�7•! L�1_- �!, III 1 (./ , , _ \ / \\ \\
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— \ CULVERT 101
LAKE NORM
W.E. = 758. ,
\
411
A J, I'Iljl
/ ,'//,', � i/':)�ui'Ilili l ►1 i i i i i` \I �\ l f l l/li
DRY BOTTOM
IIIII
/' �'ii/i// /IIIIlIll11
ASH SYSTEM :%.%J >
`:
/it
j,I I / ,,,/ WASTEWATER -
I TREATMENT
SYSTEM
/////,\ \
III � • 1 - - I l / /, . y �\GJ�
EXISTING MAJOR TOPOGRAPHIC CONTOUR
---------------- INDUSTRIAL LANDFILL (ILF) PHASE
------------
EXISTING MINOR TOPOGRAPHIC CONTOUR
BOUNDARY (APPROXIMATE)
INTERIM MAJOR TOPOGRAPHIC CONTOUR
PROPOSED FLOW OF CHANNEL
-----850-----
(BOTTOM OF CCR GRADES, ILF, PROPOSED
LANDFILL)
ASH BASIN WASTE BOUNDARY
(APPROXIMATE)
INTERIM MINOR TOPOGRAPHIC CONTOUR
------------
(BOTTOM OF CCR GRADES, ILF, PROPOSED
EXISTING SITE FEATURE (APPROXIMATE)
LANDFILL)
MAR-145 UPDATED ASH BASIN WASTE
---825—
PROPOSED FINAL MAJOR TOPOGRAPHIC
BOUNDARY (APPROXIMATE)
CONTOUR
PROPERTY BOUNDARY
PROPOSED FINAL MINOR TOPOGRAPHIC
CONTOUR
PROPOSED PONDED WATER BOUNDARY
APPROXIMATE ELEVATION 765.0
PROPOSED ILF EXPANSION BOUNDARY
(SEE NOTE 6)
PROPOSED HAUL / ACCESS ROAD
nlnTl=0
1. BASIS OF BEARINGS: NC GRID NAD83/2011. ELEVATIONS ARE BASED ON NAVD88.
2. GRADES WITHIN CLOSURE BY EXCAVATION AREAS OF ASH BASIN DENOTE
PROJECTED BASE OF CCR BASED UPON AVAILABLE PRE -DEVELOPMENT
TOPOGRAPHIC DATA OR TOP OF FILL PLACED AFTER REMOVAL OF CCR.
3. CCR WITHIN THESE AREAS WAS PLACED TO SUPPORT OR AS PART OF THE
DISPOSAL FACILITY. IT WILL REMAIN IN -PLACE AFTER CLOSURE.
4. GRADES WITHIN EXISTING AND PROPOSED CCR LANDFILLS DENOTE TOP OF
FINAL COVER.
5. THE PROPOSED INDUSTRIAL LANDFILL GRADES PRESENTED IN THESE
DRAWINGS ARE BASED ON THE "PERMIT TO CONSTRUCT APPLICATION; DRAWING
C19, FUTURE PHASES FINAL COVER PLAN, INDUSTRIAL LANDFILL NO. 1"
PREPARED BY S&ME FOR DUKE ENERGY DATED NOVEMBER 24 2009.
6. INFORMATION REGARDING THE PROPOSED ILF EXPANSION IS CONCEPTUAL AND
PROVIDED FOR INFORMATIONAL PURPOSES ONLY. LANDFILL EXTENTS AND
DESIGN DETAILS WILL BE INCLUDED IN A LANDFILL PERMIT APPLICATION TO BE
SUBMITTED TO THE NCDEQ SOLID WASTE SECTION UNDER SEPARATE COVER AT
A LATER DATE YET TO BE DETERMINED.
REFERENCES
1. SEE SHEET MAR_C999.002.002 FOR DRAWING REFERENCES.
DRAWING KEY
0 500 1000 1500
NOT FOR CONSTRUCTION
GRAPHIC SCALE (IN FEET)
FINAL CLOSURE GRADING PLAN
(OVERALL)
P"=com MARSHALL STEAM STATION
CLOSURE BY EXCAVATION CLOSURE PLAN
CATAWBA COUNTY, NORTH CAROLINA
N.C. ENGINEERING LICENSE NO. FOR ISSUED FOR APPROVAL
F-0342
SEAL
1#
`Ab`I• !
A
_
DUKE
VsE N E RGY®
SCALE: AS SHOWN
DES: JMW
DWG TYPE: .DWG
DFTR: MAW
JOB N0: 60603377
CHKD: RJB
rATE: 12/13/2019
ENGR : RJB
FILENAME: OVERALL FINAL COVER GRADING PLAN.DWG
APPD: JAB
DWG SIZE
DRAWING NO.
REVISION
ANSI D
22.0'x34..0"
MAR_C999.002.020
A
V
to
O
O
O
O
IV
0
N
O
PIN
IN
Wm -
6 INCHES i 2
3 ITENTHS 1'0 20 30
10

MAR_C999.002.021I REV. A
—E
—F
0 INCHES
_ _--- --- -- __ _=_11 ______------------- ____-___----__-- - --- fl
`_' - LEGEND
i %'-'; -- __-- _-_ -_-__-_-_--_-_-_--____-_-_-_-_-_--__-_-_-_-_-_-__-_-_-_-_-- 1 \ ` �_ /} � � -825- - EXISTING MAJOR TOPOGRAPHIC CONTOUR ASH BASIN WASTE BOUNDARY
/ / - / �,� -- ��------,:,: - - --- --- ---- _------- -� I _=/__-_- _� _ , -, \\\`
_11 __ (APPROXIMATE)
/ iY --a' _'_; _________- -____________---- _�_-_-__- _-_________- -- __:_:: , , \\��` \ // ,'� _ ------ EXISTING MINOR TOPOGRAPHIC CONTOUR
_ __ _ \\ \ \ � � MAR-145 UPDATED ASH BASIN WASTE
/ 1-1 - ___-_-- --------------- - -'____ ___--_- _ _ -_--_-_-_-__ - \ \`\ `` ` \ ` \\ ` INTERIM MAJOR TOPOGRAPHIC CONTOUR BOUNDARY (APPROXIMATE)
X �`/" -=''_= ;-'_---__-- --� ---------------------------------------- \`� �: \ / 1 / / /, I - \ \\ --- 825--- (BOTTOM OF CCR GRADES, ILF, PROPOSED
i ;'/o,% , , , _-, ;_--_'__ ;;-;_- r--__-_-_-__________________________------____-_-_-__\� �� � I rlrl l l l ii i i r1 // ram /, \I `\ LANDFILL) EXISTING SITE FEATURE (APPROXIMATE)
/ % �,/-i i i j//',-�_-,-_ '/' /�i'-'_- ' -- __ --\
'� -- _- ---_ _-_- _-_--- 1 / l I Ill , I/ l 1 _/ 1
i j �,-�%, 1--, -, ''-,i'%'_'' =-'-1 1 — ----- --- --- ----- --------------- ) I / � / / l l Il l l I Ill l 11l / __ I- , I \
' ''' ' /%'' ' ''''-' '- ' '-'-'-- '' ---------------- -_____ -'--- _____-----________--____; / I l " 1 l llll l ri 1 , I 111 1 �� �` \ �`� INTERIM MINOR TOPOGRAPHIC CONTOUR INDUSTRIAL LANDFILL ILF PHASE
,___ �i' -i / / / / / ' ' / / / - / - / - - �- -- -- _ �'_' --_-_- _-_- __------ ----- --- ---_-- I l I I I 1 I l l I l / I I " l,I l I 1 ti / I `\ � - --
1 l t' %/--'' %_--''- °I'=_-'----------- --------------------------- --------- - i i l l l I l i i i i I l l I / , l l l,� I �,= r\�` \ �_-------- (BOTTOM OF CCR GRADES, ILF, PROPOSED BOUNDARY (APPROXIMATE)
/ / I \ \ \ \ t / / // ' ' / / / -' - / / - --- ', - ---- ----- -- --- -> l / I l l l l , l I / q \ \\ --
/ ; / /�` _ \ I \\ �\`\\ \ \ \`\\ \ / / i '/ -'.' _ �_:'%'_--I __' _____________________- --- -/ l I , l l I , I l l I I l l I 1 , ,, l l I 0 l l �-. ` > )` - LANDFILL)
/ , / __ \\\ \4\ \\ \ \ \ \\ \ \\ < ,-,,,,1," /' =-----------------____ INDUSTRIAL LANDFILL -1, l 1, , l /� I� 1, l I; I I i'"ll / 1114 /11 \ \\�`�
\ \ \ \ \ \ \ \ \ \\ \ <,, / - - '> __- - _-_--_-__-- --_ ) l / , l , , l I l , / l , I I " l /I/ \ \ PROPOSED FLOW OF CHANNEL
/ /'/ /'!- \ (`\\\IIII\\\`\\\\\\ \\\`\\\\ �/,._ - ' - ___-_-_ ), l/ll l/ , l 11 "l l/l l l - �\ - \ \
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----_ �i"_-- d`' --- ' //I / / ,--r \\ \\ I \`\\\\\\\\1\ \` Fi G - \\\% 'R / / i
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Iltll I
\ i" r PROPOSED ACCESS ROAD 1 I 1 I t X
i \ I r \�- \ ►I1 W"\'„ +`;`
/ r I I \ I I I I \ \ - -\ \I-� / 1111111 ra `o cY
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LEGEND
-, �\ 1 \ \ r
' t \ / / / fI I t / —
—825 EXISTING MAJOR TOPOGRAPHIC CONTOUR
ASH BASIN WASTE BOUNDARY
Jr^
; ' , ": / 1 / I / I r I / //
/
(APPROXIMATE)
I / //' --
/; /� / / .
EXISTING MINOR TOPOGRAPHIC CONTOUR
// /
//
// -// // � r."
MAR-145 UPDATED ASH BASIN WASTE
�,/
/ //, ' / , I -
INTERIM MAJOR TOPOGRAPHIC CONTOUR
BOUNDARY (APPROXIMATE)
/
�// ,/' �
/
r /// % ' / ,r / ///.//' _ ----825.---
//
(BOTTOM OF CCR GRADES, ILF, PROPOSED
i \ 1 / Ir" /%
LANDFILL)
EXISTING SITE FEATURE (APPROXIMATE)
/
/,,/—
/ /% 1 1 1 I I I f /// I
�' \ \� t I / / / /
INTERIM MINOR TOPOGRAPHIC CONTOUR
INDUSTRIAL LANDFILL (ILF) PHASE
PHASE (SOIL / i / / I ---------
_ _
(BOTTOM OF CCR GRADES, ILF, PROPOSED
_ _
BOUNDARY (APPROXIMATE)
It
\ I I I I
BORROW AREA ' 1 I I I
LANDFILL)
v
\ \ I rI I I I
ter'
PROPOSED FLOW OF CHANNEL
j (APPROX. LOCATION) \ I \ / I / 1 I PROPOSED FINAL MAJOR TOPOGRAPHIC I \I / i II i I 825 CONTOUR PROPOSED HAUL/ACCESS ROAD
`-/ I I 1
/ i I L 1\ \ / i \ PROPOSED FINAL MINOR TOPOGRAPHIC PROPERTY BOUNDARY
/ J 1 \/ —� i \ � CONTOUR
I I \\ \, \ \_ /, I \ NCDOT CLASS 2 RIPRAP
/ PROPOSED PONDED WATER BOUNDARY
11APPROXIMATE ELEVATION 765.0
\\\ \\, \` ,—,-------------\
---------_ --\\ 1-1 \
\ `--\ \I �� \ \
\` ------ \ \`
` _ \
----_
/ I \ NOTES
)
\ \ \
/ _.--'- / I \\ \ 1. BASIS OF BEARINGS: NC GRID NAD83/2011. ELEVATIONS ARE BASED ON NAVD88.
PROPOSED NPDES ,,' \ \ --'I / \.
PERMITTED OUTFALL ---/'- 1 1 \ 2. GRADES WITHIN CLOSURE BY EXCAVATION AREAS OF ASH BASIN DENOTE PROJECTED BASE OF CCR � \ \\ \\ BASED UPON AVAILABLE PRE -DEVELOPMENT TOPOGRAPHIC DATA OR TOP OF FILL PLACED AFTER
\ -� \
— . / `\ \ REMOVAL OF CCR.
J CHANNEL 100 \
\
___ \ 3. CCR WITHIN THESE AREAS WAS PLACED TO SUPPORT OR AS PART OF THE DISPOSAL FACILITY. IT WILL
` `\ REMAIN IN
AFTER CLOSURE.
`\ \
1.0�-— ` � \\` \ CULVERT 101
`------�_ r\ \ \\\\`\
--- - ,-�\ \
-\\ \ \ \\ \\
---N\ j✓�'-'i\� \ \ \� \ \\ \\
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LAKE NORMAN
W.E = 758.9
\ I
\
\\ 4. GRADES WITHIN EXISTING AND PROPOSED CCR LANDFILLS DENOTE TOP OF FINAL COVER.
Lll�\ 5. TRANSMISSION TOWERS AND POLES LOCATED WITHIN ASH BASIN TO REMAIN.
REFERENCES
\\ �
/ / 1. SEE SHEET MAR—C999.002.002 FOR DRAWING REFERENCES.
N
/ �`\
I / .— \ \
11, ' ( \11 `\\.
\ ` ` --- -----\
... \1�1\\ \\ \\\\\�---- / — 1\ \\, ./ . 0 200 400 600
\ \ \ \ , /�--- \ / �.
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\\\ \�\\ \`\ \I /,, _ J ; GRAPHIC SCALE (IN FEET)
\ \ \ \ 1 / —��
DRAWING KEY
(SEE SHEET MAR—C999.002.020)
NOT FOR CONSTRUCTION
--- ',;` �� \ \\ t / / ;-- N FINAL CLOSURE GRADING PLAN IV
\'- ---- `- ---- • \\ \ \\1\ 1\, II I I I I / // /
/
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\ `I / /'.------------ \ - >\%;l\` \\\ \\ \ J III \ CLOSURE BY EXCAVATION CLOSURE PLAN
/ , A"=com
1.11 `\ I I //-'-__--_--- \\ ` -; I I CATAWBA COUNTY, NORTH CAROLINA
/ \I j I I // /-/-__------- `\\ -, I/- / �,/'/ / I / N.C. ENGINEERING LICENSE NO. FOR ISSUED FOR APPROVAL
/ I \ I I / it ,- -` \- ,/ / - I F 0342
/ � �, / r- — J 1 ; I t\ / --_- --_- .' SEAL
SCALE: AS SHOWN
/ , , -__- I \ \\ \ 1 -- ' DUKE
/ / -., \ \ ' - - \ r* -y DWG TYPE : .DWG
_ ENERGY J°B NO: 60603377
_-- \ I /
f 1 I I - -� 1 \\ 1
I / I I l •-'-- - I\ V A R
\ / —, \ \ l c; DATE : 12/13/2019
I I I I I \ \\ \
/ / I / / \\I / / — — �\I \\\ \\I FILENAME: FINAL COVER GRADING PLAN.DWG
///,
I is
/ /I / // / / /� // //'- I , � I A DWG SIZE DRAWING NO.
11 i /I / i // // /''11 , -_- A ° ANS22.0'xI D MAR C999.002.024
�!/ / / / ,/ -/ / ,/ // - -- —
DES: JMW
DFTR: MAW
CHKD: RJB
ENGR : RJB
APPD: JAB
REVISION
A
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1- fl
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6 INCHES j 2 3 ITENTHS 10 20
30
10
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MAR_C999.002.025 REV. A
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L
IMITS
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SH BA
IN LIMI
S
kSH BA
SIN LIMITS
—
850
PROPOSED HAUL/ACCESS ROAD
840
/
\
\
PROPOSED 9'W x 9'H CONCRETE BOX CULVERT
(CULVERT
505)
830-
-
EXISTING GRADE
820
—
\
PROPOSED
HAUL
ACCESS
ROAD
810
A
PROPOSED 1O'W x 10'H CONCRETE BOX CULVERT (CULVERT 500)
FREE
WATER ELEVATION
PRIOR
TO DECANTING
(SEE NOTE 2)
800
O
—
w
790
_
_
—
—
co
w
780
z
PROPOSED FINAL GRADE
0
770
—
PRE -DECANTING GROUNDWATER
(SEE NOTE 2)
—
760
750
—
—
—
—
B
POST -CLOSURE FREE WATER
740
— —
PROPOSED
CCR
CLOSURE
-BY
-EXCAVATION
GRADE
730
720
710
O
O O O O O O O O O
O O O O O O
O O O O O
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O O O O O O
O
O O O O O O O O
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LEGEND
PROFILE 1-1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1860
860
ASH
BASIN
LIMITS
850
850
840
840
830
830
820
820
PROPOSED
HAUL
ACCESS
ROAD
810
810
FREE WATER ELEVATION PRIOR TO DECANTING
(SEE NOTE 2)
800
—
800
—
790
—
—
—
—
`
—
—
—
790
_ _
\
780
780
\
EXISTING
GRADE
~
/
770
770
\
sun
760
760
POST
-CLOSURE FREE
WATER
5 PROPOSED 1O'W x 1O'H
750
—
— —
CONCRETE BOX CULVERTS
750
PROPOSED
CCR CLOSURE
-BY -EXCAVATION
GRADE
WITH WING WALLS
(CULVERT 101)
740
—
—
740
/
PROPOSED FINAL GRADE
730
�
730
_
7-
720 720
710 1 1 1 1710
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 O O O O O O O O O O O O O O O
+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
co I- 00 O O N r7 � Ln N') � co r- 00 0) O N rLn O r- 00 m O N r7 � Ln co r- 00 0) O N r7 �
Lo Lo Lo Lo c0 c0 c0 c0 c0 c0 c0 c0 c0 c0 I- r- � � � � � � � r- 00 00 00 00 00 00 00 00 00 00 O O O O O
0 INCHES 1 2 3 TENTHS 10 20 30
STATION
PROFILE 1-1
(CONT.)
EXISTING GRADE
PROPOSED FINAL GRADE
PROPOSED CCR
CLOSURE -BY -EXCAVATION GRADE
® PROPOSED SOIL FILL AREA
POST -CLOSURE FREE WATER
PRE -DECANTING GROUNDWATER (SEE NOTE 2)
FREE WATER ELEVATION PRIOR TO DECANTING (SEE NOTE 2)
PRE -DECANTING GROUNDWATER MODIFIED IN AUTOCAD CROSS-SECTION
TO ACCOUNT FOR ARTIFACTS CAUSED BY LIMITED RESOLUTION OF GRID
SIZE/SPACING IN MODFLOW 3D
w 1 e%Tr- r%
1. BASIS OF BEARINGS: NC GRID NAD83/2011. ELEVATIONS ARE BASED ON NAVD88.
2. WATER TABLE ELEVATIONS FOR PRE -DECANTING CONDITIONS WERE PROVIDED BY SYNTERRA IN 2019 ALONG WITH
THE BASIS AS FOLLOWS: SIMULATED STEADY-STATE GROUNDWATER HYDRAULIC HEADS FROM THE 2018 SYNTERRA
GROUNDWATER MODEL. THIS FLOW MODEL WAS CALIBRATED TO TIME -AVERAGED HYDRAULIC HEADS MEASURED IN
MONITORING WELLS PRIOR TO THE START OF DECANTING. THE SIMULATED HYDRAULIC HEADS ARE TAKEN FROM
THE SAPROLITE OR TRANSITION ZONE MODEL LAYERS, AND ARE APPROXIMATELY EQUAL TO THE WATER TABLE
ELEVATIONS.
REFERENCES
1. SEE SHEET MAR_C999.002.002 FOR DRAWING REFERENCES.
NOT FOR CONSTRUCTION
FINAL CLOSURE GRADING
PROFILE
P"=com MARSHALL STEAM STATION
0 20 40 60 CLOSURE BY EXCAVATION CLOSURE PLAN
CATAWBA COUNTY, NORTH CAROLINA
N.C. ENGINEERING LICENSE NO. FOR ISSUED FOR APPROVAL
VERTICAL SCALE (IN FEET) F-0342
0 200 400 600 SEAL SCALE: AS SHOWN DES: JMW
CA DUKE DWG TYPE: .DWG DFTR: MAW
JOB N0: 60603377 CHKD: R g
HORIZONTAL SCALE (IN FEET) o E N E RGYC J
DATE: 12/13/2019 ENGR: RJB
1 ! # FILENAME: CROSS SECTIONS.DWG APPD: JAB
'-IkQ� DWG SIZE DRAWING NO. REVISION
ANSI D 22.0"x34.0" MAR C999.002.025 A
8 9 10
I I I
i
7.1
plod
Y

MAR_C999.002.026 I REV. A
—F
z
0
w
J
w
820
810
800
790
780
770
760
0110
ASH 13ASIN
DAM
EXISTING GRADE
I
O O O O O O O O O O 00 0O O O O O
O o O O O O O O O o 0
O ± N r7 � U) 0 r- 00 m O + N M -t Lo CO
STATION
840
830
820
810
800
Wef
z
O
780
w
J
w
770
760
750
740
730
720
SECTION A -A
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
+ + + + + + + + + + + + + +
ON N N N N N N N N N 0)
N
820
810
800
790
780
770
760
750
A
H BASIN
LIMITS
1804 LANDFILL
LIMITS
/
1804 LANDFILL
(PHASE 1)
EXISTING GRADE
FREE WATER ELEVATION PRIOR TO DECANTING
— — — (SEE NOTE 2)
PRE -DECANTING GROUNDWATER
(SEE NOTE 2)
--�
`
/
PROPOSED CCR CLOSURE
-EXCAVATION
-BY
GRADE
POST
-CLOSURE
FREE
WATER
O
O
O
O
O
O
O
O
O
O
0 O
O
O
O
O
o
O
O
O
O
O
0 O
+
O
±
N
M
c0
r-
00
O
0
0 INCHES 1 2 3 TENTHS 10 20 30
840
830
820
Aft
LEGEND
EXISTING GRADE
PROPOSED CCR
CLOSURE -BY -EXCAVATION GRADE
® PROPOSED SOIL FILL AREA
POST -CLOSURE FREE WATER
PRE -DECANTING GROUNDWATER (SEE NOTE 2)
FREE WATER ELEVATION PRIOR TO DECANTING (SEE NOTE 2)
PRE -DECANTING GROUNDWATER MODIFIED IN AUTOCAD
CROSS-SECTION TO ACCOUNT FOR ARTIFACTS CAUSED BY LIMITED
RESOLUTION OF GRID SIZE/SPACING IN MODFLOW 3D
A 1 /1 T r r1
1. BASIS OF BEARINGS: NC GRID NAD83/2011. ELEVATIONS ARE BASED ON NAVD88.
2. WATER TABLE ELEVATIONS FOR PRE -DECANTING CONDITIONS WERE PROVIDED BY SYNTERRA IN 2019 ALONG WITH
THE BASIS AS FOLLOWS: SIMULATED STEADY-STATE GROUNDWATER HYDRAULIC HEADS FROM THE 2018 SYNTERRA
GROUNDWATER MODEL. THIS FLOW MODEL WAS CALIBRATED TO TIME -AVERAGED HYDRAULIC HEADS MEASURED IN
MONITORING WELLS PRIOR TO THE START OF DECANTING. THE SIMULATED HYDRAULIC HEADS ARE TAKEN FROM
THE SAPROLITE OR TRANSITION ZONE MODEL LAYERS, AND ARE APPROXIMATELY EQUAL TO THE WATER TABLE
ELEVATIONS.
3. THE PHREATIC SURFACE WITHIN THE DAM SHALL BE ESTABLISHED PRIOR TO CONSTRUCTION IN THE DAM AREA
BASED ON MEASUREMENTS FROM EXISTING PIEZOMETERS AND OBSERVATION WELLS. THE WATER LEVELS FROM
GROUNDWATER MODELS FROM SYNTERRA ARE NOT SHOWN WITHIN THESE DETAILED DAM CROSS SECTIONS AT THIS
TIME.
REFERENCES
1. SEE SHEET MAR_C999.002.002 FOR DRAWING REFERENCES.
0 20 40 60
D
800
In
VERTICAL SCALE (IN FEET)
to
790
0 200 400 600
to
co
O
O
N
780
HORIZONTAL SCALE (IN FEET)
N
cn
770
m
760 1
750
740
730
720
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
+
+
+
+
+
+
+
+
+
+
N
O
O
N
r7
�
Ln
O
�
00
0)O
N
N
N
N
N
N
N
N
N
N
ro
STATION
SECTION B-B
NOT FOR CONSTRUCTION
FINAL CLOSURE GRADING
CROSS SECTION I
AECOM
MARSHALL STEAM STATION
CLOSURE BY EXCAVATION CLOSURE PLAN
CATAWBA COUNTY, NORTH CAROLINA
N.C. ENGINEERING LICENSE NO.
FOR
ISSUED FOR APPROVAL
F-0342
SEAL
DUKE
SCALE: AS SHOWN
DES: JMW
DWG TYPE:
DFTR: MAW
CAR
,DWG
rEs
ENERGY.
JOB NO: 60603377
CHKD: RJB
DATE: 12/13/2019
ENGR : RJB
FILENAME: CROSS SECTIONS.DWG
APPD: JAB
1
DWG SIZE
DRAWING NO.
REVISION
II
ANSI
22.0"x34.0"
MAR C999.002.026
A
9
I
10
I

MAR_C999.002.027 I REV. A
z
0
Q
w
J
W
z
0
F_
Q
w
J
W
850
840
830
ASH BASIN LIMITS
ASH
BASIN
LIMITS
820
� /
1 PRE -DECANTING GROUNDWATER
EXISTING GRADE
FREE WATER
ELEVATION
PRIOR
TO DECANTING
_
810
(SEE NOTE 2)
J
`
(SEE NOTE
2)
800
790
780
PROPOSED FINAL
GRADE
770
/
760
/
750
PROPOSED CCR CLOSURE -BY -EXCAVATION
GRADE
POST
-CLOSURE
FREE
WATER
740
730
0
0 0 0 0 0 0 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
O
O
O
O
O
O
O O
O
O 0
O
O O O O O O O O 0 0 0 0 0 0 0 0 0 0 o O
0 0 O
O
O
O
O
O
O
O
0 O
O
O
O
O
O
O
O
O 0
O
O O
+
+ + + + + + + + + + + + + + + + + + + +
+ + +
+
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It �
STATION
860
850
840
830
820
810
800
790
780
770
760
750
740
SECTION C-C
LEGEND
EXISTING GRADE
PROPOSED FINAL GRADE
PROPOSED CCR
CLOSURE -BY -EXCAVATION GRADE
® PROPOSED SOIL FILL AREA
POST -CLOSURE FREE WATER
PRE -DECANTING GROUNDWATER (SEE NOTE 2)
FREE WATER ELEVATION PRIOR TO DECANTING (SEE NOTE 2)
PRE -DECANTING GROUNDWATER MODIFIED IN AUTOCAD CROSS-SECTION
TO ACCOUNT FOR ARTIFACTS CAUSED BY LIMITED RESOLUTION OF GRID
SIZE/SPACING IN MODFLOW 3D
1 r\ T r /1
1. BASIS OF BEARINGS: NC GRID NAD83/2011. ELEVATIONS ARE BASED ON NAVD88.
2. WATER TABLE ELEVATIONS FOR PRE -DECANTING CONDITIONS WERE PROVIDED BY SYNTERRA IN 2019 ALONG WITH
THE BASIS AS FOLLOWS: SIMULATED STEADY-STATE GROUNDWATER HYDRAULIC HEADS FROM THE 2018 SYNTERRA
GROUNDWATER MODEL. THIS FLOW MODEL WAS CALIBRATED TO TIME -AVERAGED HYDRAULIC HEADS MEASURED IN
MONITORING WELLS PRIOR TO THE START OF DECANTING. THE SIMULATED HYDRAULIC HEADS ARE TAKEN FROM
THE SAPROLITE OR TRANSITION ZONE MODEL LAYERS, AND ARE APPROXIMATELY EQUAL TO THE WATER TABLE
ELEVATIONS.
REFERENCES
1. SEE SHEET MAR_C999.002.002 FOR DRAWING REFERENCES.
ASH BASIN LIMITS
ASH BASIN LIMITS
ASH BASIN LIMITS
EXISTING GRADE
ASH BASIN LIMITS
ASH BASIN LIMITS
FREE WATER ELEVATION
PRIOR TO DECANTING
/ (SEE NOTE 2)
PROPOSED HAUL
-
/ ACCESS ROAD
- -
\
I
\
PROPOSED FINAL GRADE
PRE -DECANTING GROUNDWATER
(SEE NOTE 2)
PROPOSED
CCR CLOSURE
-BY -EXCAVATION GRADE
POST -CLOSURE FREE WATER
860
850
840
830
820
810
800
790
780
770
760
750
740
-E
O O O O O O O O O O 0 O 0 0 0 o O 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 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 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
+ + + +
+ +
co
+ + + + + + +
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n � Ln (o � a0
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r7
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N N N N N N N N N N n
n r)
r7 r) r) r7 r) r)
r7
� Ln Ln
Ln Ln
Ln Ln Ln Ln Ln Ln Ln
STATION
SECTION
D-D
NOT FOR CONSTRUCTION
FINAL CLOSURE GRADING
CROSS SECTION II
0 20
40
60
_
COM
MARSHALL STEAM STATION
—F
CLOSURE BY EXCAVATION CLOSURE PLAN
VERTICAL SCALE
(IN FEET)
CATAWBA COUNTY, NORTH CAROLINA
0 200
400
600
N.C. ENGINEERING LICENSE NO.
FOR
ISSUED FOR APPROVAL
F-0342
HORIZONTAL SCALE
(IN FEET)
SEAL
SCALE: AS SHOWN
DUKE DWG TYPE:
CA
,DWG
ENERGY., JOB N0: 60603377
DATE: 12/13/2019
I
FILENAME: CROSS SECTIONS.DWG
`IQ
DWG SIZE
DRAWING NO.
o
ANSI D
MAR C999.002.027
22.0"x34.0"
0 INCHES 1 2 3
TENTHS 10 20 30 4 5
1
6
1
7
1
8
1
9
1
10
1
DES: JMW
DFTR: MAW
CHKD: RJB
ENGR : RJB
APPD: JAB
REVISION
A
i
O
O
O
O
O
N
0
N
4
m
IBE 3

MAR_C999.002.028 I REV. A
z
O
w
J
W
930
920
910
840
830
820
810
800
790
780
770
760
750
ASH BASIN LIMITS
ASH
BASIN
LIMI
S
ASH BASIN
LIMITS
STRUCTURAL FILL
ACCESS ROAD
i
—
1804
LANDFILL
(PHASE
II)
EXISTING
GRADE
PROPOSED FINAL GRADE\00000
I
r
/
I
PROPOSED
FINAL
GRADE
/
PRE -DECANTING GROUNDWATER
(SEE NOTE 3)
10/
PROPOSED
CCR CLOSURE -BY -EXCAVATION
GRADE
1100,
/
-CLOSURE
/
POST
FREE
WATER
O
O
O O
O
O
O O
±
O
N n
890
880
—D
870
860
850
840
0
830
Q
w
820
—E
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810
800
790
780
770
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SON
O O O
O O O
O ± N
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 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
+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
� LO co r- c0 O O N PO LO (D � 00 0) O N PO It LO co r- 00 O O N ro It 0 co r- c0 O O N n 0 O r- 00 O O
STATION
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 u7 co r- 00 O O N I'7 � 0 O r-
N N N N N N N N
0 INCHES 1 2 3
TENTHS 10 20 30
0 20 40 60
VERTICAL SCALE (IN FEET)
0 200 400 600
HORIZONTAL SCALE (IN FEET)
O O O O O O
O O O O O O
00 0) O N r0
N N r0 r0 r0 r0
STATION
SECTION F-F
O O O O O O O O O O O O
O O O O O O O O O O O O
+ + + + + + + + + + + +
� Lr) O r- 00 O O N r0 Lr)
AA=t"nm
O
O
O
� N.C. ENGINEERING LICENSE NO. FOR
F-0342
SEAL SCALE : AS SHOWN
930
920 NOTES
910 1. BASIS OF BEARINGS: NC GRID NAD83/2011.
ELEVATIONS ARE BASED ON NAVD88.
900 2. BASE GRADES FOR PROPOSED ILF EXPANSION ARE
PRELIMINARY.
890 3. WATER TABLE ELEVATIONS FOR PRE -DECANTING
CONDITIONS WERE PROVIDED BY SYNTERRA IN 2019
ALONG WITH THE BASIS AS FOLLOWS: SIMULATED
880 STEADY-STATE GROUNDWATER HYDRAULIC HEADS
FROM THE 2018 SYNTERRA GROUNDWATER MODEL.
THIS FLOW MODEL WAS CALIBRATED TO
870 TIME -AVERAGED HYDRAULIC HEADS MEASURED IN
MONITORING WELLS PRIOR TO THE START OF
DECANTING. THE SIMULATED HYDRAULIC HEADS ARE
860 TAKEN FROM THE SAPROLITE OR TRANSITION ZONE
MODEL LAYERS, AND ARE APPROXIMATELY EQUAL TO
THE WATER TABLE ELEVATIONS.
850
4. THE PROPOSED INDUSTRIAL LANDFILL GRADES
PRESENTED IN THESE DRAWINGS ARE BASED ON
840 THE "PERMIT TO CONSTRUCT APPLICATION;
DRAWING C19, FUTURE PHASES FINAL COVER
830 PLAN, INDUSTRIAL LANDFILL NO. 1" PREPARED BY
S&ME FOR DUKE ENERGY, DATED NOVEMBER 24,
2009.
820
5. INFORMATION REGARDING THE PROPOSED ILF
EXPANSION IS CONCEPTUAL AND PROVIDED FOR
810 INFORMATIONAL PURPOSES ONLY. LANDFILL
EXTENTS AND DESIGN DETAILS WILL BE
INCLUDED IN A LANDFILL PERMIT APPLICATION TO
800 BE SUBMITTED TO THE NCDEQ SOLID WASTE
SECTION UNDER SEPARATE COVER AT A LATER
790 DATE YET TO BE DETERMINED.
780
770
760
750
O O OU-)
O O ON
N
0 o no
LEGEND
EXISTING GRADE
PROPOSED FINAL GRADE
PROPOSED CCR CLOSURE -BY -EXCAVATION GRADE
PROPOSED SOIL FILL AREA
POST -CLOSURE FREE WATER
PROPOSED ILF EXPANSION SUBGRADE (SEE NOTE 2)
PROPOSED ILF EXPANSION FINAL COVER GRADE (SEE NOTE 6)
PROPOSED ILF FINAL COVER GRADE (SEE NOTE 5)
PRE -DECANTING GROUNDWATER (SEE NOTE 3)
FREE WATER PRIOR TO DECANTING (SEE NOTE 3)
PRE -DECANTING GROUNDWATER MODIFIED IN AUTOCAD
CROSS-SECTION TO ACCOUNT FOR ARTIFACTS CAUSED BY LIMITED
RESOLUTION OF GRID SIZE/SPACING IN MODFLOW 3D
NOT FOR CONSTRUCTION
FINAL CLOSURE GRADING
CROSS SECTION III
MARSHALL STEAM STATION
CLOSURE BY EXCAVATION CLOSURE PLAN
CATAWBA COUNTY, NORTH CAROLINA
ISSUED FOR APPROVAL
DUKE
DWG TYPE:
0A
,DWG
CJOB
ENERGY-;
NO: 60603377
DATE: 12/13/2019
1 I
FILENAME: CROSS SECTIONS.DWG
`IQ
DWG SIZE
DRAWING NO.
A o
ANSI D
MAR
C999.002.028
22.0"x34.0"
9
I
10
I
DES: JMW
DFTR : MAW
CHKD: RJB
ENGR : RJB
APPD: JAB
REVISION
A
A--]
m
IBE 3

MAR_C999.002.029I REV. A
-F
900
890
880
870
860
850
0 840
Q
J 830
w
820
810
800
790
780
770
0
0
O
0 0 0 0 0 0 0 0 0 0 0 0 O 0 0 O 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 O 0 0 O
+ + + + + + + + + + + + + + + + + + +
N r� � Ln co r- CKD O O N ro Lo c0 r- 00 m
STATION
SECTION G-G
900
890
880
870
860
850
840
830
820
810
800
790
780
FAW,
LEGEND
EXISTING GRADE
PROPOSED FINAL GRADE
PROPOSED CCR
CLOSURE -BY -EXCAVATION GRADE
PROPOSED SOIL FILL AREA
PROPOSED ILF SUBGRADE (SEE NOTE 2)
PROPOSED ILF FINAL COVER GRADE (SEE NOTE 5)
PRE -DECANTING GROUNDWATER (SEE NOTE 3)
FREE WATER PRIOR TO DECANTING (SEE NOTE 3)
PRE -DECANTING GROUNDWATER MODIFIED IN AUTOCAD
CROSS-SECTION TO ACCOUNT FOR ARTIFACTS CAUSED BY LIMITED
RESOLUTION OF GRID SIZE/SPACING IN MODFLOW 3D
A I /'1Tr n
1. BASIS OF BEARINGS: NC GRID NAD83/2011. ELEVATIONS ARE BASED ON NAVD88.
2. BASE GRADES FOR PROPOSED ILF ARE PRELIMINARY.
3. WATER TABLE ELEVATIONS FOR PRE -DECANTING CONDITIONS WERE PROVIDED BY SYNTERRA IN 2019 ALONG WITH
THE BASIS AS FOLLOWS: SIMULATED STEADY-STATE GROUNDWATER HYDRAULIC HEADS FROM THE 2018 SYNTERRA
GROUNDWATER MODEL. THIS FLOW MODEL WAS CALIBRATED TO TIME -AVERAGED HYDRAULIC HEADS MEASURED IN
MONITORING WELLS PRIOR TO THE START OF DECANTING. THE SIMULATED HYDRAULIC HEADS ARE TAKEN FROM
THE SAPROLITE OR TRANSITION ZONE MODEL LAYERS, AND ARE APPROXIMATELY EQUAL TO THE WATER TABLE
ELEVATIONS.
4. THE PROPOSED INDUSTRIAL LANDFILL GRADES PRESENTED IN THESE DRAWINGS ARE BASED ON THE
"PERMIT TO CONSTRUCT APPLICATION; DRAWING C19, FUTURE PHASES FINAL COVER PLAN, INDUSTRIAL
LANDFILL NO. 1" PREPARED BY S&ME FOR DUKE ENERGY, DATED NOVEMBER 24, 2009.
0 20 40 60
VERTICAL SCALE (IN FEET)
0 200 400 600
HORIZONTAL SCALE (IN FEET)
NOT FOR CONSTRUCTION ] I
FINAL CLOSURE GRADING
CROSS SECTIONS IV
ASCOM MARSHALL STEAM STATION
CLOSURE BY EXCAVATION CLOSURE PLAN
CATAWBA COUNTY, NORTH CAROLINA
N.C. ENGINEERING LICENSE NO. FOR F-0342 ISSUED FOR APPROVAL
SEAL SCALE: AS SHOWN
R efft
DUKE DWG TYPE: .DWG
� �;_ss ENEK%.7 YF: JOB N0: 60603377
�DATE: 12/13/2019
1 !# FILENAME: CROSS SECTIONS.DWG
)V.-IN€ I DWG SIZE DRAWING NO.
A ANSI D 22.0"x34.0" MAR C999.002.029
0 INCHES 1 2 3 TENTHS 10 20 30 4 5 6 7 8 9 1 0
1 I I I I I 1
DES: JMW
DFTR: MAW
CHKD: RJB
ENGR : RJB
APPD: JAB
REVISION
A
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m
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T
2
N
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MAR_C999.002.030 I REV. A
E
F
9-
CHANNEL
LOW POINT
rl-"
GRASS-LINED CHANNEL SECTION
510 NOT TO SCALE
1. TO PROTECT AGAINST EROSION AND TO ESTABLISH VEGETATIVE STABILIZATION WITHIN THE CHANNEL, TRM (TURF
REINFORCEMENT MATTING) WILL BE USED. THE SPECIFIC PRODUCT WILL BE BASED ON THE ANTICIPATED SURFACE WATER
VELOCITY AND SHEAR STRESS REQUIREMENTS.
2. CHANNEL SECTIONS SHOULD INCLUDE A MINIMUM 2% GRADE TOWARD THE CENTERLINE OF THE CHANNEL.
APPROXIMATE ACCESS ROAD ELEV = 792.00
APPROXIMATELY 16.0'
1
° d <• °dd • °
° d
d d ° d
• ° d
d ° • °
d e °
d ° a d d d
< d d ° d
A.
d d •° A d °
° d
° d
< • d d
a • a
^ a
° a
• e d °a d•
°
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it A° d d d° d
dm
° < °
d a d
5 SECTION
TYPICAL HAUL/ACCESS ROAD
510
146.0' 5 - 10'W x 10'H REINFORCED CONCRETE BOX CULVERTS 89.0�
REINFORCED CONCRETE WINGWALL
135°
170' AT 0.6% SLOPE
37LOF15°
REINFORCED CONCRETE WINGWALL
PLAN
135°
CL CL
ROADSIDE ROADSIDE
DITCH DITCH
J TYPICAL HAUL / ACCESS ROAD
11 510 NOT TO SCALE
NOTES:
1. HAUL AND ACCESS ROADS TO BE FURTHER DESIGNED
PRIOR TO CONSTRUCTION BASED ON ADDITIONAL ANALYSES
2. ROADSIDE DITCHES ARE NOT INCLUDED IN THE FINAL COVER
GRADES PRESENTED IN THESE DRAWINGS.
APPROXIMATE ACCE
ELEV = 792.00
\3•7
REINFORCED CONCRETE WINGWALL
5 - 10'W x 10'H REINFORCED CONCRETE BOX CULVERTS
a
d d] ° a
•
d d °
• d . d
d
a d °
. dd
°
°
] a °
d
` d d
�d a
d
8
° d a
d° a d d
d °
°
d ° d
d d a a
d
a
d ° • d °
•
d • d
170' AT 0.6% SLOPE
d •
a d
°
9
3 OUTLET CULVERT 101
510 NOT TO SCALE
`INLET INVERT = 765.00
0 o C o 0 0
OUTLET INVERT = 764.00
CHANNEL 100
220' AT 0.9% SLOPE
(SEE DETAIL 4, THIS SHEET)
REINFOR
2 TYPICAL CULVERT
510 NOT TO SCALE
4 RIPRAP-LINED CHANNEL SECTION
510 NOT TO SCALE
NOT FOR CONSTRUCTION
FINAL CLOSURE GRADING
PLAN DETAILS
L=com
MARSHALL STEAM STATION
CLOSURE BY EXCAVATION CLOSURE PLAN
CATAWBA COUNTY, NORTH CAROLINA
N.C. ENGINEERING LICENSE NO.
F-0342
FOR
ISSUED FOR APPROVAL
SEAL
0A
�
fop
�.
DUKE
ENERGY
SCALE: AS SHOWN
DES: JMW
DWG TYPE: ,DWG
DFTR: MAW
JOB NO: 60603377
CHKD: RJB
DATE: 12/13/2019
ENGR: RJB
FILENAME: FINAL GRADING DETAILS.DWG
APPD: JAB
I
q,
A
DWG SIZE
DRAWING NO.ANSI
REVISION
D
22.0'x34..0"
MAR C999.002.030
A
.V
1
Y
6 INCHES 2 3 ITENTHS 10 20 30
4
L
5
L
6
L
7 8
I I
9
L
10
I

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\_ \ \
MAR_C999.002.031 I REV. A
LEGEND
E
F
J �/ _
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f j ; /ff///' /�/�'_�''� ��'�-',_- '_--_-_--_-_--- --I c� _� __-_------_--_- _------ _--_- _--'-\\ \`11 �� \\� \ `I / ,-f r/`�\ `\ ` -'/ / ----'' l
_ - - - - - - -
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/ /'Y,�//ii'/' /'''' - , '-- �' - -- __--- f G--__-___ _---_--'-----_ ___-_____---- _ -\ \\\\ \ \ I \ / ' / / / 1/ // / 1 \ --� -/ / - / 1 \ \
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- -900- - EXISTING MAJOR TOPOGRAPHIC CONTOUR PROPOSED ILF EXPANSION BOUNDARY
(SEE NOTE 4)
EXISTING MINOR TOPOGRAPHIC CONTOUR
----900.--- ILF FINAL COVER / FINAL CLOSURE GRADE
MAJOR TOPOGRAPHIC CONTOUR
--------- ILF FINAL COVER / FINAL CLOSURE GRADE
MINOR TOPOGRAPHIC CONTOUR
900 PROPOSED FINAL COVER MAJOR
TOPOGRAPHIC CONTOUR
PROPOSED FINAL COVER MINOR
TOPOGRAPHIC CONTOUR
PROPOSED SEDIMENT POND
ASH BASIN WASTE BOUNDARY
(APPROXIMATE)
- - - EXISTING SITE FEATURE (APPROXIMATE)
NnTFq
INDUSTRIAL LANDFILL (ILF) PHASE
BOUNDARY (APPROXIMATE)
PROPERTY BOUNDARY
1. BASIS OF BEARINGS: NC GRID NAD83/2011. ELEVATIONS ARE BASED ON NAVD88.
2. CCR REMOVED TO SUPPORT CONSTRUCTION OF MAR-145 STORMWATER MANAGEMENT PROJECT.
3. THE PROPOSED INDUSTRIAL LANDFILL GRADES PRESENTED IN THESE DRAWINGS ARE BASED ON THE
"PERMIT TO CONSTRUCT APPLICATION; DRAWING C19, FUTURE PHASES FINAL COVER PLAN,
INDUSTRIAL LANDFILL NO. 1" PREPARED BY S&ME FOR DUKE ENERGY, DATED NOVEMBER 24, 2009.
4. INFORMATION REGARDING THE PROPOSED ILF EXPANSION IS CONCEPTUAL AND PROVIDED FOR
INFORMATIONAL PURPOSES ONLY. LANDFILL EXTENTS AND DESIGN DETAILS WILL BE INCLUDED IN A
LANDFILL PERMIT APPLICATION TO BE SUBMITTED TO THE NCDEQ SOLID WASTE SECTION UNDER
SEPARATE COVER AT A LATER DATE YET TO BE DETERMINED.
REFERENCES
1. SEE SHEET MAR_C999.002.002 FOR DRAWING REFERENCES.
0 200 400 600
NOT FOR CONSTRUCTION
GRAPHIC SCALE (IN FEET)
ON -SITE LANDFILL
SCHEMATIC PLAN
MARSHALL STEAM STATION
CLOSURE BY EXCAVATION CLOSURE PLAN
CATAWBA COUNTY, NORTH CAROLINA
N.C. ENGINEERING LICENSE NO.
FOR
ISSUED FOR APPROVAL
F-0342
SEAL
DUKE
SCALE: AS SHOWN
DES: JMW
DWG TYPE:
MAW
e
,pW
- --
JOB N0: 60603377
CHKD: RJB
E N E RGY®
DATE : 12/13/2019
ENGR : RJg
FILENAME: ON -SITE LANDFILL SCHEMATIC PLAN.DWG
APPD: JAB
1 I 1 �1
II'< R-
DWG SIZE
DRAWING NO.
REVISION
' '
MAR_C999.002.031
A
-�
22.0'x34..0"
i
1,
ME
co
co
co
O
O
IV
O
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0 INCHES j 2 3 (TENTHS j0 20 30
10
I

MAR_C999.002.032 I REV. A
z
O
W
J
W
—F
1040
1030
1020
1010
1000
•:•
970
960
950
940
930
920
910
900
0;;
870
860
850
840
830
820
810
800
0 0 0 0 0 0 0 0 0 0 0 0 0
± N r7 Lo co � 00 m O + N ro
STATION
SECTION A -A
0 0 0 0 0 0 0 0 0 0
Lo c0 I- 00 O O + N n
N N N N
LEGEND
EXISTING GRADE
PROPOSED ILF EXPANSION FINAL COVER
GRADE
1040
PROPOSED ILF EXPANSION SUBGRADE
1030
EXISTING LANDFILL OR CCR TO REMAIN
IN -PLACE (APPROXIMATE)
1020
CCR TO BE REMOVED (APPROXIMATE)
1010
PRE -DECANTING GROUNDWATER
1000
(SEE NOTE 4)
PRE -DECANTING GROUNDWATER MODIFIED IN
AUTOCAD CROSS-SECTION TO ACCOUNT FOR
990
ARTIFACTS CAUSED BY LIMITED RESOLUTION
OF GRID SIZE/SPACING IN MODFLOW 3D
980
=10
NOTES
960
1. BASIS OF BEARINGS: NC GRID NAD83/2011. ELEVATIONS ARE BASED
950 ON NAVD88.
2. PROPOSED ILF EXPANSION SUBGRADE LIMITS SHOWN ARE
940 APPROXIMATE. BASE GRADES TO BE ESTABLISHED DURING LANDFILL
DESIGN PHASE.
930 3. INFORMATION REGARDING THE PROPOSED ILF EXPANSION IS
CONCEPTUAL AND PROVIDED FOR INFORMATIONAL PURPOSES ONLY.
LANDFILL EXTENTS AND DESIGN DETAILS WILL BE INCLUDED IN A
920 LANDFILL PERMIT APPLICATION TO BE SUBMITTED TO THE NCDEQ
SOLID WASTE SECTION UNDER SEPARATE COVER AT A LATER DATE
910 YET TO BE DETERMINED.
4. WATER TABLE ELEVATIONS FOR PRE -DECANTING CONDITIONS WERE
900 PROVIDED BY SYNTERRA IN 2019 ALONG WITH THE BASIS AS
FOLLOWS: SIMULATED STEADY-STATE GROUNDWATER HYDRAULIC
HEADS FROM THE 2018 SYNTERRA GROUNDWATER MODEL. THIS
890 FLOW MODEL WAS CALIBRATED TO TIME -AVERAGED HYDRAULIC
HEADS MEASURED IN MONITORING WELLS PRIOR TO THE START OF
DECANTING. THE SIMULATED HYDRAULIC HEADS ARE TAKEN FROM
880 THE SAPROLITE OR TRANSITION ZONE MODEL LAYERS, AND ARE
APPROXIMATELY EQUAL TO THE WATER TABLE ELEVATIONS.
870
REFERENCES
860
1. SEE SHEET MAR_C999.002.002 FOR DRAWING REFERENCES.
850
840
830
820
810
0 100 200 300
800
790 GRAPHIC SCALE (IN FEET)
O O O HORIZONTAL SCALE
0 o co
Lo Lo
N N N 0 20 40 60
GRAPHIC SCALE (IN FEET)
VERTICAL SCALE
ON -SITE LANDFILL
CROSS SECTIONS I
AAECOM MARSHALL STEAM STATION
CLOSURE BY EXCAVATION CLOSURE PLAN
CATAWBA COUNTY, NORTH CAROLINA
N.C. ENGINEERING LICENSE NO. FOR F-0342 ISSUED FOR APPROVAL
SEAL
CA
�s
lz
1
~'It
A
DUKE
ENE RGY�
SCALE: AS SHOWN
DES: JMW
DWG TYPE: ,DWG
DFTR: MAW
JOB NO: 60603377
CHKD: RJB
DATE: 12/13/2019
ENGR : RJB
FILENAME: ON -SITE LANDFILL SCHEMATIC CROSS SECTIONS.DWG
APPD: JAB
DWG SIZE
DRAWING NO.
REVISION
ANSI D
22.0'x34..0"
MAR C999.002.032
A
.t�
m
IL73
0 INCHES 1 2 3 TENTHS 10 20 30 4 5 6 7 8 9 1 0
1 I 1 1 1 1 1