Allen_AmendedClosurePlan_Rev1_AppendixD_20200731

2
N
y
ALN C999.001 .011
REV. B
-E
-F
DUKE ENERGY
ALLEN STEAM STATION
COAL COMBUSTION RESIDUALS SURFACE IMPOUNDMENT CLOSURE PLAN DRAWINGS
CLOSURE BY EXCAVATION
RETIRED ASH BASIN (RAB) AND ACTIVE ASH BASIN (AAB)
GASTON COUNTY, NORTH CAROLINA
RAB DAM STATE ID: GASTO-016, AAB DAM STATE ID: GASTO-061, NPDES PERMIT #: NC0004979, NPDES PERMIT #: NCS000546, RETIRED ASH BASIN LANDFILL PERMIT #: 3612
JULY, 31. 2020
SS\
Na,
0 i
ul
C � 1 _ \� 11 � `SO �i �• \ �\\ p
.( ,�. 3ait�ngs rpna-
BA RIVER/ � l'
LAKE WYLIE
=r.. ,� .1 �f � / ,�f �.%i! „_'�0 \�•%, o ` � • 4 / � ' o i ' •�� � fJj - � �—� �j _ _ 11
^`\✓ V p. I,l �i// %.7C �„Jf� _may/�% � • �r ' f `�� tj � � v'� �' � ��'
AAB 6
0, jcli
�o
t` wW
r �r o
E 1 /- � 0 ♦.
\ 1
0
Vln4
SITE LOCATION MAP
0 2000 4000 6000
GRAPHIC SCALE (IN FEET)
0 INCHES 1 2 3 TENTHS 10 20
N PLANT ALLEN ROAD
BELMONT, NORTH CAROLINA 28012
ice, ?,
DRAWING NO. DRAWING DESCRIPTION
ALN_C999.001.011
COVER SHEET
ALN_C999.001.012
GENERAL NOTES
ALN_C999.001.013
EXISTING CONDITIONS PLAN WITH AERIAL MAP
ALN_C999.001.014
EXISTING CONDITIONS PLAN WITH TOPOGRAPHIC MAP
ALN_C999.001.015
EXISTING CONDITIONS PLAN - RETIRED ASH BASIN
ALN
C999.001.016
EXISTING CONDITIONS PLAN - ACTIVE ASH BASIN
ALN
C999.001.017
SUBSURFACE EXPLORATION LOCATION PLAN - RETIRED ASH BASIN
ALN_C999.001.018
SUBSURFACE EXPLORATION LOCATION PLAN - ACTIVE ASH BASIN
ALN_C999.001.019
ESTIMATED BOTTOM OF ASH CONTOUR MAP
ALN
_C999.001.020
-
ESTIMATED BOTTOM OF ASH CONTOUR MAP RETIRED ASH BASIN
ALN_C999.001.021
ESTIMATED BOTTOM OF ASH CONTOUR MAP - ACTIVE ASH BASIN
ALN_C999.001.022
DEMOLITION PLAN - RETIRED ASH BASIN
ALN
C999.001.023
DEMOLITION PLAN - ACTIVE ASH BASIN
ALN
C999.001.024
FINAL CLOSURE GRADING PLAN
ALN
C999.001.025
FINAL CLOSURE GRADING PLAN - RETIRED ASH BASIN
ALN_C999.001.026
FINAL CLOSURE GRADING PLAN - ACTIVE ASH BASIN
ALN_C999.001.027
FINAL SURFACE WATER MANAGEMENT PLAN
ALN_C999.001.028
FINAL CLOSURE GRADING CROSS SECTION LAYOUT PLAN
ALN_C999.001.029
FINAL CLOSURE GRADING CROSS SECTIONS I
ALN_C999.001.030
FINAL CLOSURE GRADING CROSS SECTIONS II
ALN_C999.001.031
FINAL CLOSURE GRADING CROSS SECTIONS III
ALN
C999.001.032
FINAL CLOSURE GRADING CROSS SECTIONS IV
ALN
C999.001.033
FINAL CLOSURE GRADING CROSS SECTIONS V
ALN_C999.001.034
FINAL CLOSURE GRADING CROSS SECTIONS VI
ALN_C999.001.035
FINAL CLOSURE GRADING CROSS SECTIONS VII
ALN_C999.001.036
FINAL CLOSURE GRADING CROSS SECTIONS VIII
ALN_C999.001.037
FINAL CLOSURE GRADING DETAILS
ALN_C999.001.038
ON -SITE LANDFILL SCHEMATIC PLAN
ALN_C999.001.039
ON -SITE LANDFILL SCHEMATIC PLAN - ABLF CROSS SECTIONS
ALN_C999.001.040
ON -SITE LANDFILL SCHEMATIC PLAN - NSLF CROSS SECTIONS
ALN_C999.001.041 ON -SITE LANDFILL SCHEMATIC PLAN - SSLF CROSS SECTIONS
PREPARED FOR:
DUKE ENERGY (OWNER)
400 SOUTH TRYON ST.
CHARLOTTE, NC 28202
5
- C
�Ix
RABIr
sw-
1�•����'�'~'~"'"i CATAW BA RIVER/
x
LAKE WYLIE
i
AAB i
��..w'' :•-+�;�I�F, �.` ,fir L'� I
1 -
N
SITE OVERVIEW MAP
0 1000 2000 3000
GRAPHIC SCALE (IN FEET)
PREPARED BY:
AECOM
JAY D. MOKOTOFF, P.E.
1300 E. 9TH ST., SUITE 500
CLEVELAND, OH 44114
PHONE: [phone]
REV
DATE
I JOB NO.
I PROJECT TYPE
I DES
DFTR
CHKD
ENG
APPD
I DESCRIPTION
A
1/27/20
60603204
1 AB CLOSURE
I ANR
AMC
JDM
JDM
JDM
I ISSUED FOR APPROVAL
B
1 7/31/20
1606032041
AB CLOSURE
I ANR
I JAB
I JDM
I JDM
I JDM
I UPDATED TO THREE ON -SITE LANDFILL DESIGN
a
7
A=COM
N.C. ENGINEERING LICENSE NO.
F-0342
SEAL
LAT: N 35.180
LONG: W 81.01 °
NOT FOR CONSTRUCTION
TITLE
COVER SHEET
ALLEN STEAM STATION
CCR SURFACE IMPOUNDMENT CLOSURE PLAN DRAWINGS -
GASTON COUNTY, NORTH CAROLINA
CBE
FOR
ISSUED FOR APPROVAL
I�
DUKE
ENPR' GY®
SCALE: AS SHOWN
DES:
ANR
DWG TYPE:.DWG
DFTR:
JAB
JOB NO
DATE: 07 -3320 020
ENGR :
JDM
FILENAME:
ALN C999.001 .011 COVER SHEET . DWG
APPD:
JDM
DWG SIZE
DRAWING NO.
REVISION
ANSI
22.0"x34.0"
ALN C999.001 .011
B
9
110
m
Do

GENERAL NOTES
ALN C999.001.012
a►. B
1. PURPOSE
1.1. THIS DRAWING SET IS INTENDED FOR APPROVAL PURPOSES ONLY. IT WILL BE FURTHER DEVELOPED DURING THE
DESIGN PROCESS TO PREPARE CONSTRUCTION LEVEL DRAWINGS.
1.2. INFORMATION REGARDING THE PROPOSED ON -SITE LANDFILL 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 AFTER NCDEQ APPROVAL OF THIS
CLOSURE PLAN.
1.3. A CONCEPTUAL DAM BREACH IS REPRESENTED ON THE DRAWINGS FOR INFORMATION PURPOSES ONLY DUE TO ITS
INTERRELATION TO THE CLOSURE DESIGN. A COMPLETE DAM DECOMMISSIONING PERMIT APPLICATION WITH
ADDITIONAL DESIGN DETAIL AND/OR CHANGES WILL BE PROVIDED (IF NECESSARY) UNDER SEPARATE COVER AT A LATER
DATE YET TO BE DETERMINED.
2. PRELIMINARY CONSTRUCTION SEQUENCE:
2.1. REMOVE FREE WATER BY USING FLOATING PUMPS WITH SCREENED INTAKES AND ROUTE TO TEMPORARY WASTE WATER
TREATMENT SYSTEM INSTALLED TO MEET NPDES PERMIT REQUIREMENTS FOR FREE WATER REMOVAL (I.E. DECANTING).
PROCESS WATER FLOWS INTO THE ASH BASIN HAVE BEEN DIVERTED TO THE NEW LINED RETENTION BASIN SYSTEM AS
OF FEBRUARY 9TH, 2019.
2.2. INSTALL A PORE WATER REMOVAL/DEWATERING SYSTEM TO SUPPORT EXCAVATION AND CONSTRUCTION ACCESS.
2.3. START ASH EXCAVATION FROM THE PROPOSED CLOSURE BY EXCAVATION AREAS WHERE THE FUTURE ON -SITE LANDFILL
INITIAL CELL IS PROPOSED. EXCAVATED ASH TO BE TAKEN TO THE TWO INITIAL LANDFILLS THE NORTH STARTER
LANDFILL (NSLF) AND SOUTH STARTER LANDFILL (SSLF). INSTRUMENTATION AND MONITORING REQUIREMENTS TO BE
DEVELOPED PRIOR TO CONSTRUCTION WILL BE FOLLOWED TO VERIFY CONSTRUCTION PHASE STABILITY.
CONSTRUCTION DEWATERING TO BE PERFORMED IN ACCORDANCE WITH DETAILED PLANS AND SPECIFICATIONS TO BE
DEVELOPED PRIOR TO CONSTRUCTION.
2.4. CONSTRUCT STORMWATER DIVERSION AREAS AND INITIAL PROPOSED ON -SITE LANDFILL CELL. PLACE THE PROCESSED
EXCAVATED ASH IN THE CONSTRUCTED ON -SITE LANDFILL CELL.
2.5. PROCEED WITH ON -SITE LANDFILL CELL CONSTRUCTION WITHIN THE EXCAVATED PORTIONS OF THE ASH BASIN AND
SEQUENCE ASH EXCAVATION TO PLACE THE EXCAVATED ASH INTO THE PROPOSED ON -SITE LANDFILL. DEWATERING OF
THE ASH WILL BE NEEDED TO MEET THE COMPACTION REQUIREMENTS FOR LANDFILL PLACEMENT. COMPLETE ASH
EXCAVATION AS VISUALLY VERIFIED AND AS CONFIRMED BY GRID SOIL SAMPLING/TESTING PROGRAM.
2.6. START REMOVAL OF THE ASH BASIN DAMS. USE APPROVED PORTIONS OF THE DAM SOIL FOR FINAL COVER OF THE
PROPOSED ON -SITE LANDFILL, STORMWATER BASIN BERMS, AND GRADING FILL WITHIN THE EXCAVATED ASH BASIN.
SEQUENCE DAM BREACHING WITH CONSTRUCTION OF PROPOSED STORMWATER DETENTION AND RETENTION BASINS. IN
ADDITION, SEQUENCE DAM BREACHING TO FOLLOW REGULATORY REQUIREMENTS FOR INFLOW DESIGN FLOOD
MANAGEMENT. DETAILED CONSTRUCTION SEQUENCING PLAN TO BE DEVELOPED PRIOR TO CONSTRUCTION AND
FOLLOWED.
2.7. COMPLETE DAM BREACHES. COMPLETE CLOSURE BY EXCAVATION VERIFICATION BY GRID SOIL SAMPLING/TESTING
PROGRAM. COMPLETE CONSTRUCTION OF PROPOSED SURFACE WATER DETENTION AND RETENTION BASINS. COMPLETE
CLOSURE OF THE PROPOSED ON -SITE LANDFILL.
3. DATUM
3.1. ALL ELEVATIONS SHOWN IN THESE DRAWINGS ARE REFERENCED TO NORTH AMERICAN VERTICAL DATUM, 1988 (NAVD).
ELEVATIONS ARE IN FEET.
3.2. HORIZONTAL DATUM (SHOWN IN FEET): NORTH AMERICAN DATUM, 1983 (NAD83 NC STATE PLANES).
4. REFERENCES
4.1. THE EXISTING SURVEY INFORMATION (TOPOGRAPHY, PLANIMETRICS, ETC.) IS BASED ON THE TOPOGRAPHIC SURVEY
PERFORMED BY WSP IN FEBRUARY 2015, AND HAS BEEN UPDATED BASED ON ADDITIONAL AERIAL SURVEY OF THE
LANDFILL AND ITS VICINITY PERFORMED BY STEWART, INC. IN JUNE 2018.
4.2. CONTOURS DEPICTED BENEATH THE WATER SURFACE WERE OBTAINED FROM AMEC'S WASTE STRATEGY ANALYSIS
REPORT DATED APRIL 2015.
4.3. SURFACE WATER ELEVATIONS PRESENTED IN THESE DRAWINGS ARE BASED ON THE TOPOGRAPHIC SURVEY
PERFORMED BY WSP IN FEBRUARY 2015.
4.4. HISTORICAL 5 FOOT CONTOURS WERE DIGITIZED FROM DUKE DRAWING NO. A3350-1B TITLED "ASH STORAGE BASIN,
GENERAL PLAN, AS BUILT TOPOGRAPHY" -PREPARED BY DUKE POWER COMPANY, DATED 11-11-1975. VERTICAL DATUM
CONVERTED FROM NGVD29 TO NAVD88 (DATUM SHIFT OF -0.75 FEET WAS APPLIED). THE HISTORICAL CONTOURS ARE
ASSUMED TO BE SYNONYMOUS WITH THE BOTTOM OF CCR MATERIAL WITHIN THE LIMITS OF IMPOUNDED ASH.
4.5. THE APPROXIMATE ASH BASIN WASTE BOUNDARY PRESENTED IN THIS DRAWING WAS PROVIDED BY SYNTERRA, DATED
FEBRUARY 2018. BOUNDARY IS APPROXIMATE AND WILL BE VERIFIED DURING CLOSURE.
4.6. THE BOUNDARY OF THE RETIRED ASH BASIN LANDFILL (PERMIT # 36-12) PRESENTED IN THESE DRAWINGS WAS PROVIDED
BY DUKE ENERGY.
4.7. PROPERTY BOUNDARIES AND THE EXTENTS OF LAKE WYLIE PRESENTED IN THESE DRAWINGS ARE BASED ON THE
GASTON COUNTY GIS (GIS.GASTONGOV.COM) AND REFERENCED WITHIN THE TOPOGRAPHIC SURVEY PERFORMED BY
WSP IN FEBRUARY 2015.
4.8. THE AERIAL PHOTOGRAPH WAS OBTAINED FROM GOOGLE © 2019.
4.9. POTENTIAL JURISDICTIONAL STREAMS AND WETLANDS AND ENDANGERED SPECIES WITHIN THE DUKE ENERGY
PROPERTY BOUNDARY PRESENTED IN THESE DRAWINGS ARE BASED ON THE "NATURAL RESOURCES TECHNICAL REPORT
- ALLEN STEAM STATION, FIGURE 6 - JURISDICTIONAL WATERS MAP" PREPARED BY AMEC AND SUBMITTED TO DUKE ON
J U N E 24, 2015.
4.10. THE RAB LANDFILL IS CURRENTLY ACTIVE, HOWEVER WILL BE REMOVED AS PART OF THIS CLOSURE PLAN. SPECIFIC
SEQUENCING AND TRANSITION ACTIVITIES FROM OPERATION TO EXCAVATION OF THE LANDFILL WILL BE DETERMINED AS
PART OF FUTURE DETAILED DESIGN ACTIVITIES.
DETAIL IDENTIFYING
NUMBER
SHEET NO. WHERE
DETAIL IS SHOWN
DETAIL REFERENCE ON SHEET WHERE DETAIL IS CALLED OUT
SECTION IDENTIFYING
LETTER
SECTION REFERENCE ON SHEET WHERE SECTION IS CALLED OUT
DETAIL OR SECTION TITLE
DETAIL IDENTIFYING NUMBER OR
SECTION IDENTIFYING LETTER
SHEET NO. WHERE DETAIL
OR SECTION IS CALLED OUT
DETAIL OR SECTION, NUMBER OR LETTER & TITLE
ON SHEET WHERE DETAIL OR SECTION IS SHOWN
63
625
ILL ILL
..........................
100-YR 100-YR
W.S.E.
Y
i
LEGEND
PROPOSED MAJOR CONTOUR
PROPOSED MINOR CONTOUR
EXISTING MAJOR CONTOUR
EXISTING MINOR CONTOUR
DUKE ENERGY PROPERTY BOUNDARY
APPROXIMATE LIMITS OF IMPOUNDED ASH
APPROXIMATE ASH BASIN WASTE BOUNDARY
LIMITS OF EXISTING RAB LANDFILL LINER
EXISTING DRAINAGE FLOW PATH
PROPOSED DRAINAGE FLOW PATH
ASH STORAGE BOUNDARY
100 YR FLOOD LINE
EXISTING OVERHEAD TRANSMISSION LINES
FENCE LINE
LIMITS OF WATER
WATER SURFACE ELEVATION
EXISTING PAVED ROADS
EXISTING UNPAVED ROADS
PROPOSED UNPAVED ROADS
RAILROAD
UTILITY POLE / TRANSMISSION POLE / TRANS. TOWER
TREELINE
EXISTING PIPES
EXISTING SLOPE DRAINS
RESIDENCES/STRUCTURES
MONITORING WELL
REMOVE EXISTING PAVED ROAD
REMOVE EXISTING UNPAVED ROAD
REMOVE EXISTING TREES/BUSHES
REMOVE EXISTING PIPE
- - - - - - - - - REMOVE EXISTING SLOPE DRAIN
HATCH LEGEND
MARSHY AREA
WETLAND
POTENTIAL HABITAT-
SCHWEINITZ'S SUNFLOWER
REMOVE EX. RIPRAP
REMOVE EX. WETLAND
SEAL
L=com
N.C. ENGINEERING LICENSE NO.
F-0342
TITLE
REMOVE EXISTING STRUCTURE
CULVERT
- TRANSMISSION LINE MAX. SAG ELEVATIONS
NOT FOR CONSTRUCTION
GENERAL NOTES
ALLEN STEAM STATION
CCR SURFACE IMPOUNDMENT CLOSURE PLAN DRAWINGS - CBE
GASTON COUNTY, NORTH CAROLINA
FOR
ISSUED
FOR APPROVAL
DUKEDWG
ENFK%m7Y®
SCALE: NONE
DES:
ANR
TYPE:.DWG
DFTR:
JAB
JOB 607-31
DATE: - 020
ENGR:
JDM
FILENAME:
ALN C999.001 .012 GENERAL NOTES . DWG
APPD:
JDM
DWG SIZE
DRAWING NO.
REVISION
z
I
n
CD
CD
CD
0
0
N
co0
INCHES 1 2 3 ITENTHS i0 20 30
ANSI 22.0"x34.0" ALN C999.001 .012 B
1) 10
1

ALN C999.001 .01
' �.. + •,
1111 P LANT ALLEN RD
' -^x ASH f
' r
STORAGE
lei�.' ' yETIRED ASH BASIN �••, �.
r ` : '
r .
to v
or-
J j t r af
Z _ / '- ASH
` a- • e FILL
10
dW
R *+0frc• ASH
r
rs "� saltt
'� '" � ' ,r RETIRED ASH BASIN , STORAGE �
x I
!ems
1 r� T, i
r
Alb
16
n r • -
i�, Ali(to
'
• jak
t10.
lb
o
OL to
PRIMARY
POND 1
ACTIVE ASH BASIN
NORTH DIKE
or,
PRIMARY POND 2
APPROX.
PRE -DECANTING
WSE 640.0'
vo
COAL YARD �I
7A
RETIRED ASH BASIN DIKE x
(GASTO-016)
RETIRED ASH BASIN'`
- I
' r
'Ile -I
yl
RETIRED ASH BASIN LANDFILL
PERMIT NO. 3612 x
a
I x
x- l
apt r
PRIMARY POND 3 + -
i., APPROX. '
PRE -DECANTING
WSE 640.0' ,
r ' .1 * 1 I' ` r _r Rom•'
10
qw
f J r e t • � •� � • � Y7 '
r
.y'w r ' - .�, •� �_ I��••,�' -.tip,• '� �r
+, ice',",i' .+�► �Ar-
IL I
kmiq.,:!j a
41
10
. ..
oo
rplL
arvor
•�Rr i I olt
r J►� �Ty f '11P,
46�.�� r r �' • ' • � � ~
O'er.{ ♦�. ��
• t '� � Ir A$
iledo v
/�•
� A
0
or
• T�• !-or
LINED HOLDING BASIN
LAKE WYLIE/
CATAWBA RIVER
NORMAL W.S.E.
565.7 FT.
LAKE WYLIE/
CATAWBA RIVER
NORMAL W.S.E.
565.7 FT.
LEGEND
DUKE ENERGY PROPERTY BOUNDARY
APPROXIMATE LIMITS OF IMPOUNDED ASH
------------------ ASH STORAGE BOUNDARY
W.S.E. WATER SURFACE ELEVATION
APPROXIMATE ASH BASIN WASTE BOUNDARY
NOTES
1. LIMITS OF IMPOUNDED ASH ARE APPROXIMATE.
2. REFER TO SHEET ALN_C999.001.012 FOR REFERENCES.
3. THE AERIAL PHOTOGRAPH WAS OBTAINED FROM GOOGLE © 2019
I
0
1
W
N
0
00
0 300 600
900
NOT FOR CONSTRUCTION
GRAPHIC SCALE
(IN FEET)
TITLE
EXISTING CONDITIONS PLAN WITH
AERIAL MAP
ALLEN STEAM STATION
CCR SURFACE
IMPOUNDMENT CLOSURE PLAN DRAWINGS -
CBE
GASTON COUNTY, NORTH CAROLINA
N.C. ENGINEERING LICENSE NO.
F-0342
FOR
ISSUED FOR APPROVAL
SEAL
D UKE
SCALE:
DES:
ANR
DWG TYPE:.DWG
DFTR:
JAB
`/•
ENERGY®
JOB NO: 60603204
CHKD: JDM
DATE: 07-31 -2020
ENGR: JDM
FILENAME:
ALN_C999.001.013 EXISTING CONDITIONS PLAN WITH AERIAL.DWG
APPD:
JDM
DWG SIZE
DRAWING NO.
REVISION
ANSI
22.0"x34.0"
ALN C999 . 001 - 013
B
9
10

N.
LL SEAM STAT -N <t� i i\v
of
%
LE RD WEIGH �i//^ - /7; •��; Gi%"V)� Iti1\\\\I 1 \ 11 -IIII'! /
PLANT STATION y /.-:. / '' COAL YARD
// / // / II1 I /) r\J\l\ \ \1\ 1�\I 11\III1I IlI uIIlI lI ll/h'I, I \\ \\\\\\\\ \_/-�' IJI I1 I/�-��_==_/✓; /ii!� •IC \ ��♦�-- II/ \1 O
L� vo
/ I
' I
11 i
LINED 1
`\// '/ / 1 II I / // ' 1 J,I ll, 'Il�I �l\/ 1 /_/ /r/Il �I I '/1 t-/r,�)� �-�/',�\\y\r\I,l,I/Il r iI1, I�Il�,p/l1 iII/I�I II/�II I/,1IQ\a\1 /\I \ \\`\\\ \\\\1\\��_��JI �%�I�///�_/_//�/�-'/r1%1Ij1r/ 1l \ \I,�_1,,r�h_'/\i�__/��ce ��--` ��1\;�\\_i( /I //r 1i1• I - / \' I\ / //II\I+ i I/'iI l f ���;`;��a�iI,I'I�I I►II��`I1 1)I1'II 1 III ICIIII I II /1j 1r�i/,\�\�/ \\ -, \i !// / / / / �\�.`\� \�\ �•(�\\, \\\\ \\\\ /�\�\ �\ ,/lf(ll� \l,/�,rl,� ��
HOLDING
G\ % \/ ki) '�\ O BASIN
ASH STORAGE -------
-II(I, l;I I \\\ .\\\�\ IIIOw
W/H \\
\ \ \\ \I IIII
�1�
RETIRED i i O iILJ i / ii /'�� IIII I I I EX. SLUICE `Z► \ \ \� \ -J _ \ - —
\l I I I I I f \\ \ �AD \ _ -Ic /
ASH BASIN O I I r' r % I II ) , \ 1 IIIIII �I _� I I j /� ��� `.f \ ��` _ -\��1.7- I1
(I III .� I 1 ° t C` / ' IIII ! IIII 1 •PIPES - �• :-----__---_= =' O /)
e 1 ( l f / / / I \ t r � I I III I '// r. ❑I I ( h \ `ue. \ 1. c ) — ��--�� �_—��'� �� \l
q�'
\I I 1 I I III/ / I j �/ /i I r/r /�� I% r L.�h / 11�11II \\ III II I I ' IIIII I I I / rtJ c ( , \ \��. I I of IAr l I \ Ill III III II / )� / •(,� \ 33__
RETIRED ASH BASIN DIKE ---6
/ / I / \ • O I Ik I IIII IIIII I I I I TL 1 A482 t--� I J %Y I _�1 a
/ / 1 / /r r . \III
I/ I l __ 4 '4 IIIII L III r
- GASTO-016 " \ < r
/ IIIII I / 3IIIr r l / / r 1 i 1 TL 1A606 : \� I - 1a ,\ IIIIII Illh ' ii ''�y �' I ` '1 \ ( ) - �� \:/
, I I\ , • / I I IIII / l\\l � \ � I��� r' 1 1�11 I 1 1 I If � (100kV) `� � r� 1 \, lll� , ),� _ ��
1 \ \ l �=�, (100kV) -^\ 11 11 I 1 IIIIII +' I I L - / Cl
\ `��i \ ll� h1 IIII r1 I I / I I II II \ \� /! C) ( T/%'<`, • e
�� \ 1 / \ I /� II /{ /l��l 1 II III � �.. r � 1 y /\ 1 `'�
� o
N.
►— — t\= -- — rr/I\ \ /, I , / / �\, TL 5N5 ASH FILL 2 ^`at
\ (500kV)
/
/ 1 \( / 'JI \\/�S t-w I 111� I II� I I
I all, I I II 1 I'� f r_ I I
/ �\� 1 \ \ / �, b_ 1 / - /y ,' I I Ilei s f/ / J RETIRED ASH BASIN IIII I
,\ I I \ N. \ /mil / 1 \ ll I 1 // ����c�^ , l
F- 1 I / / , �' _ 1 \ \ / l �r ,/ �� TL 2A10 ' _p l \1)) , , ,w I ASH FILL 1
�6u If \ 11, / ^I�/ / /, \ ( �$ l / �• r`� \ \/ I I III \/� '?r
/ �\ �, r 1 / 230kV �► ►
' fco I ^=_s IN
1 l -sill--
0III(_IIIIII �rIlIi II IIiASHFILL -SO__---- 11
Nj SLOPE IrM�iI _�=L,_' s\S fJ _=\ __ -_ _ - I _r_----�-_�_-�"-'1 \/!\�lam_/•{/_:____-__ .�=--Ica_v —_—=�-�-�=- =�_J�
� �I'IIIIII I III I t==�
Via._
1 1► •=-_--_--- '- '_ ----' ____ _- ����_>_-__
w �1 DRAIN
t I III I�S(
TYP. I l I I Illll�a
( ) I I O I
' I I ' // I'/ / f '�`_, // -- I L I 1 Idl lr1 I 11 IIII -----� Lo I l rl IIi�I�IIIii II RETIRED ASH BASIN LANDFILL \ IVii I I III I r I / 1 --- - ) \ ICI' ��II II I , ---- O l I II 11 II O III Il
1 /l \ , \—_� ,` . I ..I I P(I, I II I - IlHlil! , I IL. !IIIII 1
1 r >yr / 1 , RETIRED ASH r I I _ I I I III II IINiI irlllll 1 ! ASH LANDFILL PERMIT NO. 3612 1 I I IIII
Il j )jC `/'�'-'-� I \``� BASIN I ASH STORAGE \ III, I III III �Il II III�I�lrII1I11 y r I . I
Irl Il .
II 'III
,' .-__ `•'^ - _ -. \ 1`Ni��IIO IdI I,I \ I1II1II1llI l I I __= l I--rII �� I;I`I IIIl IlrrlIl1l`llIl II I III IIIIIII ll\/I c TWrIN EX. \IIWL�l ON`�\\ III I LANDFILL SLOPE DRAINS IIICID)oj V0\ W I II (TYP., LOCATION
l IIIIIII I ( lcoIn11dIl
,l1
APPROXIMATE) I�IIIIII I I I � IIII I
itI I ==�-�I li III Ill II I IIIII jyI
I. I II C I II rl I I ( I L PIPES I 411 I
/1 \\ \ I III I I � III - II N I I I III I rII II I 1 II
LAKE WYLIE/
CATAWBA RIVER
NORMAL W.S.E. 565.7 FT.
TWIN EX. PIPES
\\\\ \`._ \ ._ -�` _-- \ / LuJ, ° Il o I III I �� \ 1 \_-� ) IIII I
I lw 11 r IIIII Ir I) TWIN EX. 36 RCP PIPES , I .I I
I.I-•______-- I . / I. I EMERGENCY
I� \\ ` --- -� III SPILLWAY
41A1111,\\\ �i III I III / I 11 /��s,��'±__�_��=�..
\�\\\ fill II I ,)�— II w�
\\ - ''' l Q �L[I 111i\\\ IIIIII /� / j I IIPIL- s:�650e���:_� s-=- _— -- - -I I I I II
�\ I III% �j I I�;- ;TWIN EX. PIPES - _ _
I ✓ %/i ♦ I 11�1�='__' sue__ ~ - --- - III d
/fG_�•uIl I
111
�. \ 1\\ \ 6S� � �� / /-_-_-___ � \1 t,�/ � �� �.�:�\��.� �.1�! �%� � 1 _r• � _� __--�� --- CONTROL PANELS
i o \ �_ — \\ .. r \ \ 11—� `� i�: — ♦ "4la, ``
l\'I ) ' IONS
,
LOC
ACTIVE ASH BASIN APPROXIME)III i
/ I / I a \ /�------ I�I 11 A \ l •' l \= -=--- , Q Il,lllllll ,
c � __�'/ • I \ 1 � �- -��--, -- DIKE
NORTH --- ---------- r----�-� �� I /
`N\
\`\1\ \ 1\1 , l / /p---� \- \
It\` )r / i /� (. \1A� >\ lllllll
J .� �� \ / s \-( , 1\ IL / ( \\ \I \,f I I°IIII
-11\=J\ 9l
11 j III o r' I II I
\
\j\ \\`\�\\� / 1I
\ I00,
PERMITTED SPILLWAY
NPDES
OUTFALL
SWO15
j I I \\\ ` ` \ I \ -• 1 " I �\ IIII III II ®€ %f ,/ , / ' II 1 I Ilj�lllll COAL YARD SUMP
EX. SLUICE \ l \ ll
IIII III \,` \ � I I V I Illlll
III 111 PIPESIyyII IIIIII DISCHARGE
(ABANDONED)
_
l ___ . '` .' � �► / ' , f-v I III III ,/ \ I I / /J I
--NN I / ;,i I IIII Ilt ► :fi /-, \\` III I
III III PRIMARY POND 2 I/i 1►1 11 I IIJIIwI�.,
i o �a i �'! •\ . _ it /�`�_Y PRIMARY l 111 I I ,l / PRIMARY POND 3 11► I I 41 illunu
Il APPROX. I Illlll APPROX. �IIhIII II �xll 111II11Illll
r ,I \\-- _ .. /. �� �� I S _ -� POND 1 iii iii r I IIIIII 1 J/dllll(1 \ IIIIII IIIIII IIII
1/,(� 1 I PRE -DECANTING 11 Il lIIIIIMII
iii iii rl I till ` t 1 I III Illlllllll
1 II JI PRE -DECANTING -J4I � c�,I 1 luwml
_ WSE 640.0' 1 \ � /fill),I � imi,111I111ImI
�J l l LJd' iiii ) r 1 WSE 640.0 i III >I1111/1111
r �\ I I I IIIIII IIIIIIt"I 1
_ / c If II / f/ 1 \
\ l Y I I/ II1f!/'����`\ `\ \\ ll I lI \/�\\\ 1 / `I/l I p IIII�IIIIIII� ✓
l 1` , _ a __ _ _ �\ �� I at
1 / ; ► '\ `-_ __ -�`_� 1 ' EX. 24 RCP PIPE > 1 Il l�/ ~�\ `\ I II I I ;
0 1 6 ------ . I I _\ II
`
f I
1 I / / / / / , - _- - _ = \� _r\,•��� -�.. 1 I / I Iljl 1 \ 1 1 II II •— C ✓ f ' I II I�1� IIIIIIIII
�' N LAKE WYLIE/
1 / C //i I Ili O II pO II
_7' 1 CATAWBA RIVER
J \� \ \� .\ _\ \ \\ \ ' I I ` \=`•'��) L_ _,� /�/ /,/ / / / IL.. II NORMAL W.S.E.
\ f ' i \ CHEMICAL - --= -- / I / /' "� liii 565.7 FT.
--- / - - 1
BUILDING a �1 _ /' \ lulull
_ _ _ / ,'- I1 w (.0
IIIIII
IIIIIIII
-----_ I11116
� �__ _ �_ ' ') 1 \ � \\�\ `�_�' I- I- IIIII 111
l / / , r ,°J�1 \\ \ rnU) IIIIII In
lllllll 1\
Q Q
r'
\/-
\I \ I ' l r `\ -- / CpC'�\\I �"i �'\ I
1 1I1 11 II 11 I I \ \ I i -� 1^111 r y t / /
/ \ \ \ \ \IIIIIIIII •III I ► 1 •' \\ \�� _�_?_ /' / / �'' / / ')
\ \�\ I 1 / /I \ _ • _/ jr�'-- j% \ /�
/ 1 Illll I ///I IIIL I /l --- /' / I . / )_t -'�'-
/ / \ \\ \ ll1 1/ nl I l , ! I \ / /' \ ` 1 1 \ v f\J li(f/ POLISHING POND I iiiilri�l Inll \ I
/i \ \\ I� 1 , II IIIIIIIII I lllllll
_ r ' 1 \ ( r' `�- �/ __ \ \ /1 \1 II 111 / I IIIIII \ \
I 111 IIIII IIII IIII 1 � l - - / '/' r `C 1 \'-i - _- 1 // \._./ �\\\�I1111 APPROX.
III j111111g11 IIIII ll I �- - all, ) I I IIII I I \
l /ll' IIIII IIIII Ill)/ 1 I I 1 i / w ° S I `) / / 1�'J / /--\ �f/ II I I \ \ \
' \ / II PRE -DECANTING
' l l ,� �^ y 1) l( J 1 . / / �-- >r' rllll�
I � , J / l t�f..- v 1 -anti 1 ' \ , WSE 635.0
till Iml 1 I I rI �_, �. IIIII I�II1ili X
/ // / III 111/I III I I ►�_' l I I \ / ,/l \ll / / f I \ `--� \` ` \ t\ \` %Es,a= 1I
\ � =1 IIIIII I IInI )
�\� `,�1\,. 1 1 1I
llll, 1 I �,; ► ,' w — . ,/ \, —� l\ \ r IIIII I I,�Illrl
I I ' iiii iiii i/al i O i r> . /'\ 11 ��' l \ �' \e i o ` .��
/ / / , W , l /,/ / \ 1 I` yl . I I IIIIIIIII \\
// ///// / / / I I ( O / '' . (' - r \ \ 1 I r \) :� `- IIIIII IIIIIIIlIIIIII
ar, / . \ \ JIB / 11 i • Iwmlp
/i/ ! II ) 1 / I , 1/ J . ACTIVE ASH BASIN J
I l �l f, \ I l lr / , \ ,�
/ , N � , , \\ \ \ � ✓=,�, J _ � 11� _ ' I�'�'I I III III'IIwI�IiI �
r_1/i
/ 1 / a�,` all, O Li l AL 1 ' � .� / ' / u AL AL \ aC � /
l 1, \ 1 / 1 l l
/'�` �
r / \ O \ / /J r / \ / • --�,
r/r/ / // ' ' ��,`�! fi. , \ ,� /�1 � ./r..,/, fir= \ ll,l II,I IIIIIIII
rr, / / r 1 ` W ( ,� \lllllll
O W v ' �-`� L `-\ \�� < I / I I IIIII 11 II II
O 1
/ l ) / / --
+III III Ill I /
all, all), AL 1 f / / AL AL AL Al AL
ll//i ! f 1 1\1 \ e,'i11 �\ _ II i, Ji I, lI/ wE.�.a ,\\\\lI 1 •_/\\ ) I __\�\ \ `\•\_\�-�.��,�'.�� , �_ rip Wr\ Ow
#11111ij IIlIlNctq I)/ CHEMICAL
oIr l Ifl tlI
l III I
I I
Y`,II,cC,On
u
J�___; I BUILDINGI
If Jill Illlll I( \ I / `il<jl`� __ \�L.`�\ �___�/ I / \ �� \`\ `- r J/ /I III I
I1 nl l `npll n \ \ \ r► r--- _' 1 11` m\ _ 1r -
\\\\\ \ 1 IL 1 ` ► / _•�� \7 \\\-'/. ►" ai, \ ai, all,
L , //
IN
111 `-,
\
,
I\ \111j�\\\\`� ! \�� \ \ \\ all, AL all,
II \\I\ \ ( / / \ \ \����\ �`
p \ \\ \\\\
650
1 \ ../ r / \ . = - - ICI ��`_• \\;\�\ �\\ '^ ' r� i i /% '/ EXISTING \�<=c,\\
/ I r I r 1 /WTS PAD S '\` \ ��I 11 l j jl
\\\\\\1 1 a✓, r-�� �__-_�/ / // /// / 1 _ \ tea- \ I 11 I /
/�%%/ / / � I � \ r / / ' / ' \\\\\ \I\ \ �` , /, \�`J / --- ' / // l � / l /Ill l ` ` \\ 4, I I
\ l Il , / l l _ j=�\»)I \IIIII 1 / /1 /
\ _- '�/f/ \ 1\\\\\ll / 1 r\ \J�-- / / 1 1 Il / � I l /
,��'/
ititr / ,r J \ 1 I 1 \ \���\
- r r (ter\ I /"_� \ \�\,\ / ���� , / ,
\ \ \ \ �_\\\\\ \\ l \� \.�_ \
If
IN
IN. IN
O _ _ ����\��_ \\� `_�
I � it \11 I I I / '// 1 I Ir 1 00NN
\ ��/ / \ \ I \ � \ � , 1 1 \ / 1 ♦ // r _ � // /�-ram/
NN
`
IN\�--��`\\ r/i��=/i//_ �\
I If I 1 \, \ \ \ \ \ , r__ / / ��`\ TRAILIT
_—
// I \�
\11, �,/� \\�+►\ 1 1\\`\ \ \ IIII IIIII /
`\ ` \ JURISDICTIONAL ;�\�\\\��\ \III► II'�'` i'= �:\��\�/'i ` 1`„---\ =',\\�
\ \\ ( / 1 \� \\ rl \ 1
STREAM �\\ \\\" 11 IIII /,/l---/11
�111I Ibll l II I \ \ILl r\\�\\\\\Q\\�`�_i I I' I111 \� \\-/--�_=1\\ \
soil
�N�\`\\\���. i�� l t\•:� 1"6t�ltiii I ���fC /
INCHES 1 2 3 TENTHS 10
LAKE WYLIE
100-YEAR FLOOD
ELEVATION: 571.3 FT.
JURISDICTIONAL STREAM
LAKE WYLIE
100-YEAR FLOOD
ELEVATION: 571.3 FT.
PERMITTED SPILLWAY
NPDES
OUTFALL
002
JURISDICTIONAL STREAM
ALN C999.001.014 will B
LEGEND
— — — - 625 - — — — EXISTING MAJOR CONTOUR (25 FOOT)
EXISTING MINOR CONTOUR (5 FOOT)
DUKE ENERGY PROPERTY BOUNDARY
APPROXIMATE LIMITS OF IMPOUNDED ASH
ILL LIMITS OF EXISTING RAB LANDFILL LINER
------------------ ASH STORAGE BOUNDARY
LIMITS OF WATER
100-YR 100 YR FLOOD LINE
APPROXIMATE ASH BASIN WASTE BOUNDARY
HATCH LEGEND
WETLAND (SEE NOTE 4)
POTENTIAL HABITAT - SCHWEINITZ'S
SUNFLOWER (SEE NOTE 3)
1.
LIMITS OF IMPOUNDED ASH ARE APPROXIMATE.
2.
REFER TO SHEET ALN_C999.001.012 FOR REFERENCES.
3.
POTENTIAL HABITAT FOR SCHWEINITZ'S SUNFLOWER WAS IDENTIFIED BY AMEC'S JUNE
24, 2015 NATURAL RESOURCES TECHNICAL REPORT. PRIOR TO LAND DISTURBANCE,
THE U.S. FISH AND WILDLIFE SERVICE MAY REQUIRE A BIOLOGICAL SURVEY OF THESE
AREAS.
4.
POTENTIAL JURISDICTIONAL WATERS (STREAMS/WETLANDS) WERE IDENTIFIED BY
AMEC'S JUNE 24, 2015 NATURAL RESOURCES TECHNICAL REPORT AND SURVEYED BY
MCKIM & CREED IN FEBRUARY 2016. CONFIRMATION IS PENDING U.S. ARMY CORPS OF
ENGINEERS REVIEW.
N
5.
WORK WITHIN THE 100-YEAR FLOODPLAIN ALONG THE SHORELINE OF THE CATAWBA
RIVER MAY REQUIRE PERMITTING.
6.
EXISTING TRUCK WASH AND SCALES TO THE NORTH OF ASH FILL 1 MAY NOT BE
LOCATED WITHIN THE ASH BASIN LIMITS SHOWN ON THE DRAWINGS. THIS WILL NEED
TO BE VERIFIED PRIOR TO CONSTRUCTION.
0 300 600 900
NOT FOR CONSTRUCTION
GRAPHIC SCALE (IN FEET)
TITLE
EXISTING CONDITIONS PLAN WITH
TOPOGRAPHIC MAP
P"=com ALLEN STEAM STATION
CCR SURFACE IMPOUNDMENT CLOSURE PLAN DRAWINGS - CBE
GASTON COUNTY, NORTH CAROLINA
N.C. ENGINEERING LICENSE NO. FOR F-0342 ISSUED FOR APPROVAL
SEAL SCALE: AS SHOWN DES: ANR
DUKE DWG TYPE :. DWG DFTR : JAB
JOB NO:
ENERGY® DATE: 07-31 -2020 ENGR: JDM
FILENAME: ALN_C999,001.014 EXISTING CONDITIONS PLAN WITH TOPOGRAPHIC MAP,DWG APPD: JDM
DWG SIZE DRAWING NO. REVISION
ANSI 22.0"x34.0" ALN C999.001.014 g
—
9 10
1 1
z
CD
•
0
1^
Y
0
W

IN
It
i F ol. / \ \ \../ / /i \ \
``
/ :// ?�///./ 625 i//•//, Q / 'i, /. \ \ \ 625
® \ \ /� \
i / /i/ i / / /-_� \ / \ \ I�11 \ \ / \ f 1 r \
//// /i// / / / / / / �----_ IN IN
` Ni '' \ \\ \ \ J � � 1 \\� \ r IN
\ 1 \ \ / , \ \ \ \` \/ \ Ip�,= \�� \ t \/j ./' \ \
\ \----------
o f , /, ---_ ` Q \ \
I \ \ 650 ` \ \ \ \ \ \ I }� \ \ ' O E \�
��QF_ - \ / _ 1 (IN
\ /'IN
\\\
�`�\\\ _ 1► ,-`\ \\\ \ II, \ to- \\\ \\►1 �0 8 II 8 h
I A\ \ \ - / I \ \Gam__ �--_\\ \ \\ \ � ' \\ `\_/ \
11 I I I \ \` \ //ram 1 I I) , `/ -r- \\\ \ \\Q \\-/^--, \\ \ 0�\t\o \ \ // \\\\
,, \. 1 1 1 / �� \ \ \ - - of 1 \ IN \ \ \ (-X1 / �' ` 1 �,\\�\ . 0 \ \ 1
F \ \ / I I \ \ 'V
1 \ I
liit rri \�\\�-\�•-__,675-1 �F 1\ W 0 \\\ ppE�l�\\\\` 1 i \\� \\I `\ p ALLEN STEAM STATION \\\\\`J 1\
1 III I \I 1 \\ \ `ti ^/L\ \\ \ `\ / \ �1 1 \\ L/r' t / \ � . \ / b '`\ \ p�` \` 575 1
_ - °`°�` `\g \ o�-ttom� 1 1 dy;
t III r r r ``-------`--- o \ pP 1 \ \ \ \` ` I /"' �I '\\\\ \
L�E 0� 4 \ `dFp� �\ \I 11 \\/'\\ / \\\\ - j �Iez.,�lll�
\ OE 1 I
—X / / / ' OE 0% / / 0 \\ `\ `\\ `\ ) 1 �[ c \\�' '.l / I' /i'''/� /ef \t 1 \\ el \\� si�' '
` \ _• \ -�X TX of /' / / - - �.� V/ O \ i '� �J'i '' \�1^ \ ' ✓ (^ i'�_.. `-\ / ` \\ \\_eJ rr
rr ,
_ - x OE OE
-- r OE / 0;pZ , ,/ /�/' �/ a-- \^\ `__ J`- �- _ \ --- �j� i�� 1 `�/II
OE - ►^ / / / �� `. f // 11 �J
I/ 1 /
CULVERT BULKHEADED / \ DOE- / OE " ---\� )\) %'---� ��\> >/�' \�- `\ fi it /\
hi
-a-- /
of 1� \) /'/'/ ', \ ice' - / JII % //I /Ill Illr' O
/ ( `��
/ -----IVA-
\ t \ / �-------- - ' I o r-_ - - - -- ALLEN RD OE —� / -- 1 ®WEIGH STATION I
\ ( . ---- --- LANT \ 11 1 I I 1 \ 1 \
i i r - - - --- P - _ ,� ,� rars'rrs! / SEE NOTE 6 `\ \ \ �' i ` ':..'J I Ill
\ ' ) / _ \\ \\ 1 r` ra r-- 1 I � \ ( ) \, .., COAL YARD
i i / \ I '\ \ 1 \ I �, / �' '-■ I \ O /'' �- t -1 Y \
I l \ ■\ _ -�L�l 1 1 \- I \ \ 7
\ 1 \ I I I \ — — ♦ \ / ♦ / / I / \\ \ 1 \ \ \ \\ / l / 1/II, // II 1
_ • ^� \ r I \ \ \ \ \ I \ /- �/ I I Lo LINED \
/. 1 r'r ♦ I I l l I ■ / / V \ / i 1
\ ./ / __ / ``t / ■ it I lI ! / / \ \ \\ ? \. I / IIIIII /l I111 I , I �...
I / • I ♦ IN ♦r■...■■r1 ■ I I / I I \ ♦ / / I / I l l/ l III 1 HOLDING `
1 I 1 I \ // _ , : W w : \ �4"-__` - ♦ I I ._� , \ \ \ 1 \ \\i \ I ~ -' ,� / �/ /- �)� ! / 1 i / i , i \�
I / / ♦� \\� \ \ s> .moo �6� I % I I / 11' i I BASIN
w O O 1 ! ■ I I I I I � \ t / �1 \ \ , / \ \ \ ( \
I �I 1 r ■ �♦ r 1 ,) / ♦ i I II II __�, ` , ` \ \\ \ \ �J t1 \ \ oo, t� I / Illy ;1
\ / I I - I�,I♦ I II ■ iII1' /// ` IN,
1\ \ r/'il Ili \\\
OE ��----/- OE OE —� /OEr f—/ 0� -ram-\ 0€ \ �- 1 / /�t \-- \ r JIN t\ r\ / r I J WES,,z \ I
/ r—T pE �-+— DOE\ / + 1 4e--. ASH STORAGE 4 r/' 1 � ■ IIII ////,/'♦♦ /;' \ \ \\ /. ,� �� / I \ t / N 1 � \t I ,
me
OE , OE I / r 1 w I r■ I ■ ■ I I I // // ♦//, , \\ /� I , l �/ I \
X 1 1 1 1/ \✓ / O 1 ■ ■ 1 1 1 1 I I I I I \ ,\ \�\ / \ _\ \ 1 1
rl / / EX. SLUICE \ 1 / I _ / 1
\ I RISER STRUCTURE / I - 1 i W� ■IIII 1 >� rT■I I / \ \ \ \\� \ _/ \\ ^ �V , '"\
I 1 / 1 � ■ l \\ 1 \\l , / 1\1 \
I I ■ I II II I I I u I PIPES \ \\ J \�\ r \ - - 75 J)
1 , -/' ■— — /- , lrlr / I I I I I I I ■ I/ I \�� \`� \ \ - \ �_-'-5''- r
/ 1 ■ 1 ��-_
' \�/- RETIRED ASH I / *1 r ■ ■ I I I I I I I 1 r ` ` \ ` _
� �\ W / 1 rl 1 , ■ ■ I I I I I I I I I \ \ \\--� 1 •--_ �/ r-'--_- - �., r / n1
W ( ■ ■ I I I I I I 1 , ■ \ ` \ \�` \`\----------------
BASIN r l I O \\ /
I r , / / �_ �■ I \I`'O / ■ I ■ ■ I I I I I I I I `\\\\ I `� `� — - ---'
,,, Liles tv I DROP INLET . ■ ,III III 1 i 'I 1 \\ `\\ \\\� \. q -\\ 1 ;�MEOW �(■ rr-�
O O /\ •■ 1I I ■ ■, I I I I I I ■ IN \
/ J \ I I ■■ I I. ■ ■ I, I I I I 1 1 ■ r IN \�----------------- --- \-
f TL 1A606 (100kV) ! -4 ■■ 1 I ■ � 1 1, ■ � - - - - - - _RETIRED ASH BASIN DIKE _ __ l
—� i I l 1 ' J ' I 1 \ ■ 11 TL 1A482 ■I I _--------------
/ / / r , ■■ I , 1 ■ ■ I 1 I 1 ■ GASTO-016--------- \�: \ `J 1
1 , ► 1 , ■■ I , 1 ■ �o �- (100kV) 11 ■I� COMINGLED , ( ) �■r.��,r,=-�::.`\\�\ rr
I \ l 1 I l 1 1 W I, ■■ 1/ 1 ■1 �n I I, — ------ \\\
,/ / TL 5N5 (500kV) / / 1 ■ o I I-Ij IT■I r MATERIAL PILE i r - I \� \\\`�\
O I ■ ■ i \\\
\\ \ / `� 1 ■ ■ / ■ I I 1 I I ' ' I ■ / ( \\\
I I I I / \ / \t 1 ■ ` 1 ■■ / I ■ IIII I I 'llY 1 /ii I. / / : 1 1 ( I I `\\,
1 / I 11 1 �, \\ \ \ ■ ■ r (, I I IIII I c0 I ; T I . > - • / ?� rJ\\'\'\` \\ \ ;
\ o ■� i liii � i i i, ii i i i1 ■ � I I ` �- -\ _ \ I I (\� � �- t' � r � \1�� \I\i
s�S- -- ► I \ t --\\- �► I "/ I I I I I I I I I I ;I I/ i /-/ ? l �` 1 L ��� �1\I ►1
\ `\ -/' ! an if
1 — r I I I I I I I I I ■II 1 1 '� /' % `\ \�\ \ f I I I I I I I
/ -\ / \ !♦ \ ♦♦/ I I I I I I I , I I I ri I I / /^- \ \\ I I I I I I I I
/ l 1 1 / W ■•, i I I IIII IIIII I' I I .' `l\ 1 1 \ \\\ \ ( / 625\ /_625 IIII III
J I O •1 / ASH FILL 2 1 11111 If I it
I■I�1 I I \\\ \\\\\ I^ 1 ,1 1) I II I I I I
-- - 1 1 I / / \\\ V ti . ,• I I 1 I I I I 1 : I - �'- \�\ \\\ \� ` \` \\\ — f , J� I/ r / / IIII I I
Z3---- t \ \ I I I I II I ` i \ `\ `\ IIIIII I
\ \ I \ , , , y� ■ ♦ ♦ I I !fill I III - I �■LL t1 // IIII I I
1' W\ . 1 / I I I I 11 —I+--1 1 �. \ \\ \\
\ -\ I O 1 I I I I I !!Jill // \ r
_ Jr I I 1 I \ \ i4 \ J -O I ♦Il I I 1I 11 II 1I I I / - \ \ I \ \ \�\ ��� _- \ _ If J) l ZJ/ III I II
O /'/ / \ _
_ � �\\ \ fill
Lam, I I � r / / / / —J� 1 \\ \ / __� ,/ .r � � v t/ I
\ t 1 \ / ♦ l l , 1 � I I 11 I I I 1 1 \_ %�' — - — '/// / \ \ \`\__ f IIII ]fill
\� TL 2A10 (230kV) f ■� / I I 11111 I II1 I� /� - r=-------___= :%-''J \` '^' 1111 I I I -
RETIRED ASH BASIN I
( - IIII III
ASH FILL 1 1� _ ,--------- __
O / '\ I `-_\ W.E.625.fi //
_ ■, / \ \ 1I/1 I IIIII / / \ IN \\ IIIIIIII _
_`-___ / / / •ti / \ \ 1 1 11 I 1 III 1 r `------------ /,/ /--\N\\ \ \ \ IIII I I -
�� • ■ 1 / I \ f \ •LLI • •�j l / fill I 11 I I r _ ♦ __ .♦r ! \ \ r ` \ — — — Jill I III
/ , \ ( I / l // • •/ _ \ \ \ 1 1 II I I III 1 1--------- _ \♦ p\I\ \ \ — —
/ a ♦/ /�� \ \ \' i 1 II II I III II y 11♦ / r"-\ \ !1 \ \ ` ■■�---ifill f
I
r-' ■■■■!„J•a ■■■ ■r■ I I l \ \ J ■■■■■■i■2NwVoill\ I I ■ C--_==------� --� /■■■ f>� ----' ------IIII II
------ / ''/ \�J1ASH FILL SLOPE III I III I I I I I I r 1 ■IIr ��{-— _-- -- ��ir>Na�i■■■■a�■�■■rasa■■■■■ I■1 I--- L 1 L� _ -� _ -_-_ �� - r ' _- LL-__ --__�------ �-- 11111111■I ___-___ IIII III
/ - ---'-' -- r DRAIN (TYP.) I 11 ■ II11 I I I I I I r11� ■I I 1 I — — — — — ' I' --_ Ni\ — — _`-----_ _---'' --- IIIIIII I I
-- -/� �' - ^ ('' I _ I I ■ I I I I 1 I 1 1 r ' I I 1 1------------------------I_-- _� \ `_ _-__ — — _ - — — — — -
/--------------'' �/ 1 O 1,1 I I I I 11 I I I I I II . III 1--_------------------- __
-- _----___-- ���---- 000
I I I ■ — — - I 1 I I I I r III i 1 I I I r==== =-_= _ _ — — / \-\ ---------- ------ --- ----- - i, �I Ir IIII 1 I 1 I I
I IIr IIII III
^ + I I I, Ir IIII I I I
--- �/ ----- -- ' ♦1 W W ' met I I 1 1 I I I " ■ ■ I I 1 I I I I I■ + (-—------==1 /� - - - _ 1
r �I I I ■ I 11 I I IIII■ 1 I \t \ ® I- J -\ I IIr IIII I I I
---- /' ' (♦1 1 O O ► Nit I " ' ' 1 1' ■ I 11 I IJ ■ I / I
-----\\_.' ----- /�-- ------ -- -' IN) i 1 o1 r l// I I/ I I I I11 11 1 1 1 1 r IIr ■ I I I 1 1' li \ ( I I ! \ 1 1 I IIr IIIIIIII I
1■I I 1 `I) " I I II 111 I �If ■ 1111 1 , 11
111 1 / �I111/ III II I1111 I11111�r ■I11 'IIII \_ —, 1,1 1 1III1I 11111I111
/ 11 I I1, 1 1 — I I \ I I I Ili IIII Ill'
I
I♦' I ' ~'illl 1 II IIIII IIIIIIrI+ ■ IIII 1 1, 11 \ I , III) Ilti IIIII IIII
) I W 1 �I I I I I 11 11 I I I I III ` ■, 1 1 1, 1 1 RETIRED ASH BASIN LANDFILL ' 1 1 IH 1 i I111 III
M ► 1 , O 11I�ill) --ice 11 III11 IIIIIII+ ■ 1111 1,111 t111n1i 111111111
1 if I I\♦ 111 11 III ` r ■ 1 1 I �j I I 1 1 ASH LANDFILL PERMIT NO. 3612 l I Jill I I i 11I 11 1 1
I ASH STORAGE , 1; 1/ 1 1 1 1 11 I: ■I 11 1, 1 1 III 1 ■ III i G 1 11 I 1 1 I 1 I 1 I 1 1 I
1 AID, w w , t.lr I I fll ■111111 111111� ■ I l
\t t I O O I •1/ II I I 11�■ ■IIIII II 111`I+ I IIII Ilill III �j j1 1 Ili IIII III
, ■IIr" I11 III IIII /`II II` r 1�1111 I11� 11 �I � l i�Ii lid Iiiiil
\ \ ,��- RETIRED ASH ��— II •,sill" iil llii Ili�li i II,II�I °�iiii IIIIII f\\
\ \\ \ i ►I I i 111 II ii illil /� 'f I I (IIIIIIII
\ \ / BASIN I ) I •I11 I I 111 11 1 1 1 II I ■I I I ' Ir , I I (IIIIIIII -
`I �� I 1 LLJO I Ir♦IIIIII I I I II' IIIIII 1jrllll`I IIIII IIIIII I;II, J 1 III, t-I IIII II =
■IIII I I I 11 1' ■'' i I, I ■ 1 I I i l l I TWIN EX. PIPES 11 , Irl IIII I, _
■ -+ ,-1-1 1 i 11 I I I I I I / I I 11 I 1 1 I I I -
\ 1 ! \ 1 I I 1 11,1 I 1 I■ ■ 111 ' I 11 1 `II ■ 1 1 1 I I, 1, 1 LANDFILL SLOPE DRAINS (TYP.,
\� \ \ `� \ I IW IJJ W /1 I ■I I 1 1 I I 1 1 I■ ■ 11 I I III ■ 1 1 1 11 1 I I I — II =
\ \ \__\ \ I O O ' I t i'� 1111 1 I I j 1 1 11 1 J I I I'� ■ I I I I I LOCATION APPROXIMATE i 1 1 I I I 1 111 I I I I -
C� �`— I Ilo 11 1 11 III III I11i� mill IIII1\ J u I I I111 II -
;\ \\\ \\ ♦I I— I — ■ ■III I I I I I I I 1 1 I ■, I I I 1 I I I IIII I I -
\ \ _ _ \ _ <•' _ I 'millI \ I I II II II /1 JIII1■ ■ 11 11111II 11 I
/ ■ I 1 1 TWIN EX. v I I IIIII 11
I I I I I 11 III IIII■ III 1 1 1 TWIN EX. 36' RCP PIPES _ _
■ ■, 111 X\��\ ,/-11 I I, 11 „11 I /� . I I I■ I ■ I 1 1 , I 9 — — -675 = -- ^'--'�- I -
\ \ ) II I 1 / 1 r ' PIPES IIIIIII -
\ \\\ / 11 I I 1 I 1 1 11 I 1 I // / 1 1 I +1 / / % _ _ _ _ / —---_-_-------------- _- ' I li-j■ I I 1 I I
11 I I „ ■I P� wl i r \ \ ® - --- _-_-_-_-_-_-/--_----_-----------_ --- �/ �/ IIIIIII -
\\ 1 I l♦ 1 \`\\`\ `�! / I I I I I / ,- 1■ I F� I �- — _ — _ ____-_-_-_-----------_ _ _--------- --- -�' /� IIII I 1
- -` Z \\ \ \ \� ( 1 1 / I 111 I , ///, 1 ■ I I YY 1 I I 1--- /
------\ \ / i 1 • w W yl ♦\��\\ \ I I / , I I I , I / / / 1 1 ■ I I 1---- --- —_—_ -650- -_ ----
` ` ` - \ \ ---/ - ♦ \\ \\ eC I I I I / / , / ♦ I I---_---- __ — ----- /-_- -_-
\ \ \ _ _-- _ r\I�, O O 1 ♦ \ 1 r 1 1 I 1 1 / / / 111 I ■ , 1 I TWIN EX. PIPES - -- __---------- ,♦'
♦ \\ I , ) \ \\\�\\\\A\ I I I 1 III 1 l i'i' i i/ // \♦ 1 II ■ ' L — — — — — --- ---� —--------------_- 1-��-� ■■ ■♦ III 1 I 1 I
' ► �■ --- I , \ \\ \\\\ I 1 I ► , I I , 1 \ /- : :--- .• I . \--------- _
1 \ - ----- I I ♦ \ \ \ \ 1 1 .� � ;--------------- �.I---- _ —'----FFErr� r_--_-- I' 1 I I 1 I
I - - \ / ■ 1 1 \ \ \ //i/ I I •• I 1 II \ - — _ _____--
--- \ \ I ; \ \\ \ _ _ i ----- ' I I I ♦ r \` \` \ \\\\\---'//f' ' `\i/ ♦♦-� -\ 1 I ■ �`---- -----_ _ --- _ _ - --- - 625= aaa is;�■ �3r
_ I
---------��---'----- i;■—
All A
�� \ _ / \ ♦ 01 \ / 1 ♦ / /J- — — -- — ------ -- W.E. W.2
'4 L X IN Owl SEMEN
- - IN r _ - - V ♦♦ \ - I ` \ \ \ / --- ■ - - ` - - _ EMERGENCY SPILLWAY (0 t
t CONTROL PANELS AND
\ ; t . / / ■ I \\ ` \ / / \\ ■
\ I ■� 1 \
t \ \---___� / �♦ / ♦ t 1 \\\ - CLEANOUT PIPES (TYP., ACTIVE ASH BASIN (i ��► III(/ l�� /r
♦ ♦ I ��' NORTH DIKE 1 \ 1 0 / /
-� \ / -- •'1 , �___� \ \ +�� LOCATIONS APPROXIMATE) _- 11 �, 1 I o , /
\\ Ni / , 1 PERMITTED SPILLWAY
I \ \\--�\ \ // / /, /- \ > \ ,' `\ 1 \ /
'\ \ . '' / ` 1 _ �J 1 I r \) I II11 I IIII I I
` E EX. SLUICE \��/ ,/ L /� 1 COAL YARD \SUMP
(
1 ` \ ' / --- -------;:' E 1 '�' /I' PIPES
\ I 1 1
1 ,-------- 1 j1 \ ,'�' /' 1 / DISCHARGE
\ /
\
(ABANDONED) I I IIII
\ J / \W.E. fi30.1 J
TL 1A482®�� //1-`J' i,
1 \`-------- - r j �- (100kV) I i 1 I `\
4 --\ ,r f / I I 1 , 1 \Vll, / i ® I I 1 I// IIIII 111 1
/J\/ I I I 11 1 I I I I I I
PRIMARY POND 3 �i 111
APPROX.
675— - ` - -�' ,/ �/ I I I I ' / ,_� //'-1 PRE -DECANTING - \ \ 1 \
\
WSE 640.0' I III
�- .6 I 1 i i i PRIMARY POND 2 I i /� , I 1 i
PRIMARY I ,' I I 1 i i i I i I i i 1 i 1 r
PRIMA1
APPROX.
POND 1 I I
w/ PRE -DECANTING
WSE 640.0' , I �,' --
i616 / '/ r 01
�'' --' / 0 // ` / / � ^-l\-' I I I •,�_\ ) i /--'-... '-_/ ^',\_��'' % % II 1 IIIII IIIII �
, Il /,- I I I - \ , l/ _-� / 1 IIIII (III / I I ,
/ I \/ 1 / I, I II I it 1
� e/ I 1 I% I t 1 _.'' 1 / / I 1 11111 11 1 1 1 1 I /�
O �> ),�11
/�' �/ I I - tl 11, I I
EX. 24" RCP PIPE '� i i \ rI ,- / IIII I ii Ili r1 - ���
rr l
¢ ( o \ �_ .r-� I > � �• 1 I \ r \,� 1
\
`\\ I I
./ r► r�� t `1 I 1 `—_�_ ./1 t I ----'^ /' I IIIII IIIIIII i
0 m --------- --------- -•--•--•--•-
x
LAKE WYLIE/
CATAWBA RIVER
NORMAL W.S.E.
565.7 FT.
LAKE WYLIE 100-YEAR
FLOOD ELEVATION:
571.3 FT.
ALN C999.001.015 "v. B
LEGEND
- - - - 630 - - - - EXISTING MAJOR CONTOUR (10 FOOT)
EXISTING MINOR CONTOUR (2 FOOT)
DUKE ENERGY PROPERTY BOUNDARY
APPROXIMATE LIMITS OF IMPOUNDED ASH
LL LIMITS OF EXISTING RAB LANDFILL LINER
•----------------- ASH STORAGE BOUNDARY
LIMITS OF WATER
100-YR 100 YR FLOOD LINE
APPROXIMATE ASH BASIN WASTE BOUNDARY
HATCH LEGEND
WETLAND (SEE NOTE 4)
POTENTIAL HABITAT - SCHWEINITZ'S
SUNFLOWER (SEE NOTE 3)
AIr1TCC`
1. LIMITS OF IMPOUNDED ASH ARE APPROXIMATE.
2. REFER TO SHEET ALN_C999.001.012 FOR REFERENCES.
3. POTENTIAL HABITAT FOR THE SCHWEINITZ'S SUNFLOWER WAS IDENTIFIED BY AMEC'S
JUNE 24, 2015 NATURAL RESOURCES TECHNICAL REPORT. PRIOR TO LAND
DISTURBANCE, THE U.S. FISH AND WILDLIFE SERVICE MAY REQUIRE A BIOLOGICAL
SURVEY OF THESE AREAS.
4. POTENTIAL JURISDICTIONAL WATERS (STREAMS/WETLANDS) WERE IDENTIFIED BY
AMEC'S JUNE 24, 2015 NATURAL RESOURCES TECHNICAL REPORT AND SURVEYED BY
MCKIM & CREED IN FEBRUARY 2016. CONFIRMATION IS PENDING U.S. ARMY CORPS OF
ENGINEERS REVIEW.
5. WORK WITHIN THE 100-YEAR FLOODPLAIN ALONG THE SHORELINE OF THE CATAWBA
RIVER MAY REQUIRE PERMITTING.
6. EXISTING TRUCK WASH AND SCALES TO THE NORTH OF ASH FILL 1 MAY NOT BE
LOCATED WITHIN THE ASH BASIN LIMITS SHOWN ON THE DRAWINGS. THIS WILL NEED
TO BE VERIFIED PRIOR TO CONSTRUCTION.
N PDES 0 200 400 600
OUTFALL NOT FOR CONSTRUCTION
SWO15
GRAPHIC SCALE (IN FEET)
TITLE
EXISTING CONDITIONS PLAN -
RETIRED ASH BASIN
ALLEN STEAM STATION
CCR SURFACE
IMPOUNDMENT CLOSURE PLAN DRAWINGS -
CBE
GASTON COUNTY, NORTH CAROLINA
N.C. ENGINEERING LICENSE NO.
F-0342
FOR
ISSUED FOR APPROVAL
SEAL
_ DUKE
SCALE: AS SHOWN
DES:
ANR
DWG TYPE:.DWG
DFTR:
JAB
�.
ENERGY®
JOB NO:60603204
CHKD:
JDM
DATE: 07-31 -2020
ENGR:
JDM
FILENAME:
ALN_C999.001.015-016 EXISTING CONDITIONS PLAN.DWG
APPD:
JDM
DWG SIZE
DRAWING NO.
REVISION
ANSID
22.0"x34.0"
ALN C999 ■ 001 .015
B
9
I
10
I
z
CD
•
0
1 '
V^
1
0
W

ALN C999.001 -016
Fay. B
4
�„r• - �\ a �I / is I - I 1 I-\ \
/
'I , ----- —_--___�' — — — bL`J- aaaa,•a;�f' - ----- \-
_-� I--------�--
\� ` _ /------__ \� / \ \ \`\` /' I\` /'�•,/f �` _ — — — — �--------------- W.E.C.V.z l 1 IIIII!(/
Ak AIL
NNN some
\ - — _ ♦♦ ♦ _ \ \ \ ' / i --- - — — — - EMERGENCY SPILLWAY
' 625. — — _____ _
CONTROL PANELS AND
/� \
♦♦ ♦ \ I \ \ j0 ��;%' / CLEANOUT PIPES (TYP., ACTIVE ASH BASIN
_- ♦ ♦ 1 I \ \ =' a NORTH DIKE I1 I c"'�I 1 1 o ' \ /NI
----- ♦' I Z \, _LOCATIONS APPROXIMATE)
PERMITTED SPILLWAY IIIII III i
----- \_ III \ I it
NPDES
OUTFALL
\\ 1 I I I /-�1 \ II I l I III I SWO15
h r /' - - —LI I I I 1 r-1 III j
�� j ,/ \ i \
`. � 1 I �
\` \► 11 ; r / / I f-I II/'� EX. SLUICE \\� ; _ L I 11 COAL YARD,SUMPI
E 4 I --� 1
l-====___='/ !/ �E ill
PIPES \r �'— _ _ ,/ /i i G /' DISCHARGE
•___ I /
(ABANDONED)
TL 1 A482.w`E 6301
------ I _ i 'o` ale (100kV) I \ I ® / a 1 I lI yl 1 I I I I l I I f
8F Hill III
j
�� PRIMARY POND 3 �
APPROX.
f/ //_'-1 PRE -DECANTING 1 �\ I III l
(I I I I PRIMARY POND 2 I I /f ,/ ` I I I• i
I , ' WSE iili PRIMARY I I I iiiIi ll
I I I I APPROX. i III I III I
POND \ I I I I
PRE-DECANTING ► I II iiiIi Iiili�
/' _ ��� O I r ^ 'i '• _ I I I I I --/ I I I I III I III I I
WSE 640.0' I I .' ---' / I h I l l l l I I 1 1 1 1
Lj
ilk
$JI
\
----- _ I EX. 24" RCP PIPE
0 o cNI\ ) 1 >\IJ\
// / \�� (} „
'�. I 1 1 1 I^�.-�E�ao.e 11
`\ t 11 III I I I I I I
^ 4 w', \ \ n � � I 1 I I 1 �- c IIIII IIIlII I
1\ I 1 1 \ / - \• / ,� - III I I I I I I
w.E.63,.6 \_� I' /' // I IIIII I I I 1 1 1
LAKE WYLIE/
r=;' \ 1 ► \ �� r/ '"� 1J i ( I.`\ /'/ / ,'' '"` i i i I i I i i I i i 1 CATAWBA RIVER
NORMAL W.S.E.
--- ri 4�s3 565.7 FT.
1 L_-_y 7 , , /
1 / / \\ \\ \ I \ \ /% // 1 �_\/� j 1 // ,/ / �i' I IIIII 11II
/ \ \ W / CHEMICAL l , \ I III l II III II I II \ \ \ ��- \ \�. — \ 1• - -^`_ _`i /' ,' / . \ I � � I I III I I
'-. i `\ BUILDING - _ -_--- --- -
IIIII I
�' ,/ ,/ / _�� i — O I III I
�' I I I I I
\ I j I \ \ l \ \•_'-- \ \\ `__-__ '-�I�W W 1/ I i ` t / I \\ �_ U) I IIII I
`\ O O O t� II 1 f ; / \ //�/\ aLLI Q I I I I I I I
1 I 1 1 1 / / \ -r \ ^ ^\ /, / ♦ \ \ I II I I I I III 1 1 \
\ I 1 1 I \ //i / 1 - \ / /
1
/\ /,� % _\`J '/ ` /
1 1 / \
\ 1 II I l 1I 111 rI II \ \ ----- 50\ ./ ' � �\r •I /^�r/ I 1I I I 1\ \
\ \ \
POLISHING POND
APPROX.
PRE -DECANTING
WSE 635.0' 1 I I I I I I I I I IIIII `\Q
TL 5N5 500kV '� 1 `\ /,, ; •1 1 1 / // < f,\\ _ I r 11 III I Iiiji
II
/ / r / I I I I 1 �" r _ ' \/,' i / / /' // \\ , _�._�\ • 11�/ 11 III I III I I ^\^ % / I 1\
W.E.18.5 'r I IIIII I I I I I _/ I \ JURISDICTIONAL STREAM
l I
I I l 1
IleI l � , / � \ `-__� -
� ,U QO AU\\
I I I I III I II III
r W W 1 1 \ \ \ I I I I I I 1
�
ACTIVE ASH ASIN
'ju % / 1i \ \\ \
i' 1 ` r I\� 1 \ l 11 III l l I I I I I I I I 1
1 \ II III I I II III I 1
TL 2A10 (230kV) O w1-LI r
/ / / / / / r• \_r I�_ / �/i \� l �/ � \ !+' 1 -----/ ,"- r I I I III I III IIII 1
W W Ilk
Lo
�jlk ALI AIL AIL �jlk , / 1 �`\ \\r� \ % /�-/ )(.0 I I I I I I I 1 —
/ r % \� l� 1 III III I IIIIIIII
TL 1A606 (100kV) /
W - \ I \ r II III I IIIIIIII
' I i WI-�r `\ ` / - I \ III IIIII III IIII LAKE WYLIE
IO l \\\PE;RMITTED SPILLWAY ii' /II III II IIIIII Il II IIjIIIIlllIIII
I 100-YEAR FLOOD
\�I W W mmk � \ \
\ \\\ I ELEVATION: 571.3 FT.
0
a4 I I W.E63a9 jj j (1IO O
1�I
/ I W.E.639.a i' 11 /ik
\`\ t\ / \\ \- r I I I I l I l l I I I I j 1 M
w CHEMICAL `
/ —�---\ i BUILDING
W.E.637.1\'`----- -'i/' /i/ill i i i ` \ I\ 1\ NPDES
� O � l ---------- =---- /ii /�/ /�/� \I \\ \\ \\ II OUTFALL 002
I -^\ \ / , `-/- `�\`\ / '-1\ _ a W.E. 6355 Nc �l�c �llc Alc ALA. ALA.
��' i / 1 _ `_ �-_ `, �lu� �u4 EXISTING
_ ---'/ ' L J \\ \�-\�N� `� \\\ \�\ \ >4 // /' ,/' WTS PAD j
N.
II
Ld
/ \ INI w fir— — i i �`\ \\ \\ \ \\ \\ , % % / / ' 1\ r, , i JURISDICTIONAL STREAM
N. N
--------------
N it
�N\co
ro
�.
/ —� c) Ile
\\`\ TRAILS 1 / j l / I /I l ' ell
1- 1 \ 1 1 r/
11 ii
/ �
/
/
INCHES
m
TENTHS
....................
1 1 1
JURISDICTIONAL, \ \ \\ \\ I / l ► �' iN`N `N�`\\
1 STREAM \ \ \ \ 1 / r \ 1 \ \ ,NN\ \ \ \ _ I
LEGEND
— — — - 630 - — — —
EXISTING MAJOR CONTOUR (10 FOOT)
EXISTING MINOR CONTOUR (2 FOOT)
DUKE ENERGY PROPERTY BOUNDARY
APPROXIMATE LIMITS OF IMPOUNDED ASH
LL
LIMITS OF EXISTING RAB LANDFILL LINER
•""""""""'
ASH STORAGE BOUNDARY
�•�••
LIMITS OF WATER
100-YR
100 YR FLOOD LINE
APPROXIMATE ASH BASIN WASTE BOUNDARY
HATCH LEGEND
WETLAND (SEE NOTE 4)
POTENTIAL HABITAT - SCHWEINITZ'S
SUNFLOWER (SEE NOTE 3)
KIr1TCC`
z
CD
1.
LIMITS OF IMPOUNDED ASH ARE APPROXIMATE.
'
0
2.
REFER TO SHEET ALN C999.001.012 FOR REFERENCES.
O
_
_.L
3.
POTENTIAL HABITAT FOR SCHWEINITZ'S SUNFLOWER WAS IDENTIFIED BY AMEC'S JUNE
'
24, 2015 NATURAL RESOURCES TECHNICAL REPORT. PRIOR TO LAND DISTURBANCE,
O
THE U.S. FISH AND WILDLIFE SERVICE MAY REQUIRE A BIOLOGICAL SURVEY OF THESE
AREAS.
4.
POTENTIAL JURISDICTIONAL WATERS (STREAMS/WETLANDS) WERE IDENTIFIED BY
AMEC'S JUNE 24, 2015 NATURAL RESOURCES TECHNICAL REPORT AND SURVEYED BY
MCKIM & CREED IN FEBRUARY 2016. CONFIRMATION IS PENDING U.S. ARMY CORPS OF
N
ENGINEERS REVIEW.
5.
WORK WITHIN THE 100-YEAR FLOODPLAIN ALONG THE SHORELINE OF THE CATAWBA
RIVER MAY REQUIRE PERMITTING.
0
00
0 200 400
600
F_ NOT FOR CONSTRUCTION
GRAPHIC SCALE
(IN FEET)
TITLE
EXISTING CONDITIONS PLAN -
ACTIVE ASH BASIN
ALLEN STEAM STATION
CCR SURFACE
IMPOUNDMENT CLOSURE PLAN DRAWINGS -
CBE
GASTON COUNTY, NORTH CAROLINA
N.C. ENGINEERING LICENSE NO.
F-0342
FOR
ISSUED FOR APPROVAL
SEAL
DUKE
SCALE: AS SHOWN
DES:
ANR
DWG TYPE:.DWG
DFTR:
JAB
ENERGY®
JOB
[DATE. 07 - 31202020
ENGR :
J DM
FILENAME:
ALN_C999.001.015-016 EXISTING CONDITIONS PLAN.DWG
APPD:
JDM
DWG SIZE
DRAWING NO.
REVISION
ANSI
22.0"x34.0"
ALN C999 - 001 .016
B
9
1
10
1

2 3 4 5 6 7
IP
AOR At
p/
ir
• • s _ 71
' • ' - J •.r T 11
mw
lo Iwo
• ALLEN STEAM STATION <r
f f +
dmww
fro
,
PLANT ALLEN RD COAL YARD
1 : ; ■ : •' �} LINED
v ' Q, HOLDING ' I
t • �� ■ r i i �♦ ` ;- BASIN I
• 4 ♦♦ ASH ♦♦♦� ■ ■ •� `« - W.E 5]�R
I '
` STORAGE ;;4r as
.'
■ ■
RETIRED
�` .,�• ASH BASIN«-
jqr
•_ •� '► y( :: RETIRED ASHSIN DIKE «
IL mom,
46
■
r .� . .♦: ASH .r
Z• ♦♦�: FILL 2� IF
ir
ASH wF 6956 ` . • ,
v > ' • ■ was"�
. � ••'~ FILL 1
■
—
RETIRED A-
SH BAop SIN
r . _• 1 ■ ■ t ■ ■ �u■�
ir - ASH idea, on'
STORAGE op-
RETIRED _ RETIRED ASH BASIN LANDFILLoil ,
•41 ; :: ■ 'T' : ; ASH LANDFILL PERMIT NO. 3612
ASH BASIN ■ ■
i`' � -� i is ■ ■ ; � - - - • - ■
IL 9
• rIr11 ■ ■ ••■ ■ + •
109
L
KF
r NORrq.
♦ ■
1
i 1A r • go
• _i
-
�►- e - -
r . • •
-
1r, \-S-22
=I' GWA- PN-ID S-10 OW-15 8-27 8-28 LAKE WYLIE/
• . B-23 S-20 CATAWBA RIVER
■ .. GWA- - W-17 - B-2A CPT- S-19 NORMAL
..' -ram B 2 "- AB 28D
• • , ♦ GWA-22S -' II AB-28S AB28 _ CPT-23F�' •
- , — OW 21
7
- T —
OW-2 -
B-30 PRIMARY POND
PN-2D • •
S-1
CPT-24 APPROX. CR-141
r
_ ...
now
B-1 /0W-20 CPT-URS-8-S
B-1
12
WSE
• ' �i
a
.�
CPT-URS-8-S
/
'z
AB-25S
A 21
"- -.
k _ �
�
�
OW-1 AB-24S
� � • � ' -Y
_ ' - S-14
AB-25SL
' AB- D � S • 13
'
\� A-21
AB
* AB-24SL
AB-25BRU • GWA-31
• ` GWA-21 DA
AB-13
♦ 1 ; AB-24D
a -
AB-26S
i ,; _/qg_ - GWA-3
-13D
- �� AB-24
-- -- -
_ / _
AB 25BR AB-26 J { \ GWA-
ALN
C999.001 .017
B
LEGEND
DUKE ENERGY PROPERTY BOUNDARY
APPROXIMATE LIMITS OF IMPOUNDED ASH
..................
ASH STORAGE BOUNDARY
APPROXIMATE ASH BASIN WASTE BOUNDARY
W.S.E.
WATER SURFACE ELEVATION
S—X
AECOM SOIL BORING LOCATION (2015)
x
URS—X—B/S—X
AECOM SOIL BORING LOCATION (2015/2014)
CPT—URS—X—S
AECOM CPT SOUNDING LOCATION (2014)
AB—X/GWA—X/BG—X
HDR SOIL BORING/CAMA ASSESSMENT
WELL LOCATION (2015)
l
SB—X
HDR SOIL BORING LOCATION (2015)
CCR—X
CCR MONITORING WELL (HDR 2016/2017)
B—X
S&ME SOIL BORING/MONITORING WELL
LOCATION (2010)
B—X/OW—X
S&ME SOIL BORING/MONITORING WELL
LOCATION (2007)
AB—X
S&ME EXISTING ASH BASIN VOLUNTARY
GROUNDWATER MONITORING WELL LOCATION (2004)
CPT—X
S&ME CPT SOUNDING LOCATION (2007)
B—X
MACTEC SOIL BORINGS LOCATION PERFORMED
FOR HDR (2011)
MACTEC EXISTING ASH BASIN COMPLIANCE
+}.,
AB—X
GROUNDWATER MONITORING WELL LOCATION (2010)
S—X
MACTEC CPT SOUNDING LOCATION PERFORMED
PREFORMED FOR HDR (2011)
}
OW—X
DUKE EXISTING OBSERVATION WELL (1983)
P—X
DUKE EXISTING PIEZOMETERS WELL (1983)
AB—X,BG—X,CCR—X,CP—X
CAMA CCR MONITORING WELL (SYNTERRA 2018)
NOTES
1. AECOM SOIL BORING LOCATION (2015/2014) AND AECOM CONE PENETRATION TEST
D
LOCATION (2014) PRESENTED IN THIS DRAWING WERE PREFORMED/INSTALLED BY
URS. URS HAS SINCE BEEN ACQUIRED BY AECOM AND IS REFERRED TO AS SUCH IN
r
THIS DRAWING.
Z
I
O
O
O
N
0
0 200 400
600
NOT FOR CONSTRUCTION
GRAPHIC SCALE
(IN FEET)
TITLE
SUBSURFACE EXPLORATION LOCATION
PLAN - RETIRED ASH BASIN
ALLEN STEAM STATION
CCR SURFACE
IMPOUNDMENT CLOSURE PLAN DRAWINGS -
CBE
GASTON COUNTY, NORTH CAROLINA
N.C. ENGINEERING LICENSE NO.
FOR
ISSUED FOR APPROVAL
F-0342
SEAL
SCALE: AS SHOWN DES:
DUKE DWG TYPE:. DWG DFTR:
ANR
JAB
JOB NO: 60603204 CHKD:
ENERGY®
JDM
kqwwol
DATE: 07-31 -2020 ENGR:
JDM
FILENAME:
ALN_C999.001.017-018 SUBSURFACE EXPLORATION LOCATION PLAN.DWG APPD:
JDM
DWG SIZE
DRAWING NO. REVISION
ANSI
22.0"x34.0"
ALN C999.001 .017
B
9
10

AB-14D Y i� -29 URS ,4-B ; - AB-9
#� t B-23 r S-18 AB-9
WA-1 4DA ••CST--21 _
GWA--14$ • AB-30S
��! �"' �' �24� �...... .... � � � :�` ,•. S-1 `B-26 S-4 AB-9D
GWA-14 •... •ram -{ -
, \ _ \
\ _ GWA-14D ♦ ' � ► �jr/' ' `B-24 -27 ^ 5 r
•� , 1
/ l -
GWA-ti ]-22 J - *"' ` B 16 AB -
8-3 - OW-22 'r. :, ., AB-27D p ' -
w l OW-18 S-22 S-3 AB-27S 6-29
• • i j ' + GWA-2 PN-1 D — - 10 OW-15 B-27 Aft- B-28 LAKE ' - ' , . ; ► f'" B-23 S-20
CATAWBA RIVER
' ' _ • GWA- W--17 AB-2B-23k CPT-22 S-19
B-2 8D NORMAL•�•
_ . • y .:,, :•s • `GWA-22S - - r , = 3� OW 21 AB-28S AB28 _ ,,00 CPT-23 •
B-30
• r PN-2D . \`
«'' . r ,J •ems S-1 CPT-24 • • • /l -CCR-14D
... ..
B-1/OW-20 CPT-URS-8-S
CPT-URS-8-S
w� fi OW-1 • 1 1 AB-25S N i - S-14
AB-24S
AB-25SL
AB-13S AB-24SL AB- D 1 S- 13
•AB-AB-25BRU AB-26S GWA-3BRA
a � AB-13 , - GWA-3BR
AB-24
AB-13D � r �f• AB-25BR —GWA-3
` AB-24 • � •
• CPT-URS-11-S i ` `GWA-3S
CPT-URS-11-S- GWA-311)
• • \S-10 S113-9 •
OW-2 A-Ul tS-2-S
t i i.+7 *' - •' ' CPT-URS-12-S
S-9 .. r URS-3-B
AB r f P-3 - OW-4
AB-4S r r , CPT-URS-13-S
CST-URS-13-S OW-6
AA
AB-) � '+ io
OW-5
.' f - o� ' 1 r' CPT-URS-9-S �&� ..,.f
_ t 23BRU l � - - � M-16S
/ CCR-16BR
• .� -�I► 2AB-23 AB-23
GW-3D \ CCR-16D
' `- � �� -
r ` , •ss URS-2-B
�.. •
r� • #? � � � pus r �
POLISHING • . ,
APPROX.
J
} • 1 CCR-1
WSE... WA-911) . • ' CCR-1
A-24 CPT-URS-10-S
GWA-9 AB-20S r GWA-24D �:. AB- ?2
8 '.
AB-
A-Z"4S AB-20 s t�!� i " ' • • I AB-10
AB-�2
` AB-20D� ram%-: 1,;r Ar ; pp Y _ P9 = AB-221 R AB-1 OD
`GWA- r
GWA-24FJR GWA-9 ow-8
_ AB-21 BRL P-7 OW-1
_ .. AB-21SS CPT-URS-1-S lhS-1- 1
AB-21 � \
- OW-10 - OW-12
AB-21 BR `� AB-21 S S-02 ip
AB-21 SL
S-03
AB-21 D - S-04 AE --6A
' r► �`4
AB-6R
100 _ 0-6R
•• y • ...� - ,C m--18S
• _
• �� CCR-21 D �+ - CCA -1
w ,
'.
AB -lib '• s.. ` ter'•' r - . � ► r _ `•Ir '
• -• _ ~
w
�' t. •• '�� + CCR-21S • -r• �,
r 0 ` AB-12S ► A `' ' 4j► PH WELL r v • '
r ► • - - • IA t + r
• _.y, . � ' s "` • ice" + r� y Yir l • r
low *01AB-5
off mom
�r GWA-2
• GWA-26 . 1? i _ �.. r ` � -•r!'t _ � GWA-2D
ip
• ' i►
`• BGSB-GWA- r +- 1 w GWA-2
.,, GWA-26S ' • r I ' , �` CCR- 'fs- - - •
r a • • r AGWA-1D - ' `GWA-2S
GWA-26D . • • �♦ a -
- . GWA-1 S
• - ! .rt �r,► •+ - i� I +r t . ` GWA-1 BR/ 40
,. i • . • f1 \ 4,
,: w +�► �l-�i►I• l r�� ''��' `GWA 01
VAV Ass
•sp
ALN
C999.001 .018
' B
LEGEND
DUKE ENERGY PROPERTY BOUNDARY
APPROXIMATE LIMITS OF IMPOUNDED ASH
------------------
ASH STORAGE BOUNDARY
APPROXIMATE ASH BASIN WASTE BOUNDARY
W.S.E.
WATER SURFACE ELEVATION
S-X
AECOM SOIL BORING LOCATION (2015)
x
URS-X-B/S-X
AECOM SOIL BORING LOCATION (2015/2014)
CPT-URS-X-S
AECOM CPT SOUNDING LOCATION (2014)
AB-X/GWA-X/BG-X
HDR SOIL BORING/CAMA ASSESSMENT
WELL LOCATION (2015)
SB-X
HDR SOIL BORING LOCATION (2015)
x
CCR-X
CCR MONITORING WELL (HDR 2016/2017)
B-X
S&ME SOIL BORING/MONITORING WELL
LOCATION (2010)
B-X/OW-X
S&ME SOIL BORING/MONITORING WELL
LOCATION (2007)
y
}
AB-X
S&ME EXISTING ASH BASIN VOLUNTARY
T
GROUNDWATER MONITORING WELL LOCATION (2004)
CPT-X
S&ME CPT SOUNDING LOCATION (2007)
B-X
MACTEC SOIL BORINGS LOCATION PERFORMED
FOR HDR (2011)
4
AB-X
MACTEC EXISTING ASH BASIN COMPLIANCE
GROUNDWATER MONITORING WELL LOCATION (2010)
S-X
MACTEC CPT SOUNDING LOCATION PERFORMED
PREFORMED FOR HDR (2011)
OW-X
DUKE EXISTING OBSERVATION WELL (1983)
x
P-X
DUKE EXISTING PIEZOMETERS WELL (1983)
x
AB-X,BG-X,CCR-X,CP-X
CAMA CCR MONITORING WELL (SYNTERRA 2018)
NOTES
1. AECOM SOIL BORING LOCATION (2015/2014) AND AECOM CONE PENETRATION TEST LOCATION
D
(2014) PRESENTED IN THIS DRAWING WERE PREFORMED/INSTALLED BY URS. URS HAS SINCE
r
BEEN ACQUIRED BY AECOM AND IS REFERRED TO AS SUCH IN THIS DRAWING.
z
0
0
0
�
M
W
0 200 400 600
NOT FOR CONSTRUCTION
GRAPHIC SCALE (IN FEET)
TITLE
SUBSURFACE EXPLORATION LOCATION
PLAN - ACTIVE ASH BASIN
ALLEN STEAM STATION
CCR SURFACE IMPOUNDMENT CLOSURE PLAN DRAWINGS - CBE
GASTON COUNTY, NORTH CAROLINA
N.C. ENGINEERING LICENSE NO.
F-0342
FOR
ISSUED FOR APPROVAL
SEAL
DUKE
ENErl
RGY®
SCALE: AS SHOWN
DES: ANR
DWG TYPE:.DWG
DFTR: JAB
JOB NO: 60603204
CHKD: JDM
[DATE, 07-31 -2020
ENGR: JDM
FILENAME: ALN_C999.001.017-018 SUBSURFACE EXPLORATION LOCATION PLAN.DWG
APPD: JDM
DWG SIZE
DRAWING NO.
REVISION
ANSI
22.0"x34.0"
ALN C999 . 001 - 018
B
9 10
I I

INCHES
11 �'I, � i \\\ i � \\\ ���\ ��'..-.� , \ \ ,vim 1\..�.. - ^x i -- ,/ \� \• /
q ( I \\�\�i \`� •\ / ��\ / �`:\� \_ �� __ ��, `I \\\\ 1'� \\\ of ALLEN STEAM STATION
� /' • __•• / / �/ , �� \ \ \ \ \1 \r. _ � it--�\ t 1�/<�z�
1�--/--------
IJLLJ
' = - -- RD p �'� _ , `----� 1/ ^ _ — II / ) �" /1// 1,/I��� \'Alifli1 / _— PLANT ALII�L _ , +- —, 1 •,\ \ �\ `/ 11 I - / , . , .. I , I /\
-- _ -, + \/ \ t / \> COAL YARD 0 _� \ \
IN, Ai
\ / u r \ / 1 `\ \.r lLINED/111
/
I f - - - _- --- \ -- /-/ \��\�J;/;;/ilc4 / li II it HOLDING \.\ �I
\ 11 \\ % / - O w W _-625 _ --- �� `qr l \\ r \ ; �\ Ali / / I BASIN \\ I
QIII/ / 1/ -��� / /i' - _ = � - `♦\� I J�� r' -- __/
IN
LLJ If
/ AI Q o\w — \ --feno _ --D-
-RETIRED ASH BASIN
IKE
O TL 1A482
L 1A606` 0 ------(GASTO-016) jv
�I
-----
$c/ \ ? \\� r 16 w w IIIIIII
TL 5N5 1 / O p W / / ' II I IIIIIII
/ \ / / O II II (III II
+ 1 I t (500kV) W
O I - —`'/ �'- ��---_ _� �• / ( IIIIIIII
♦ \\ \���\-\\\� --�,\ / �,�i'/ \1 (I I I 1I1I '�II I(IIIIlIIIiIIIII
II1II1
fill lit1
TL2A10 o 11
(230kV) I
W +IIIIIj
OO WJ
/0
-. 0 �� w ® f \ / / IIII Illlllllj
-------------
�w J
Q_ W
�O
60ci
liiljil I
O w �� / /i IIII IIIIIII
\\ \e \ \ \ \\ O W W _ I I (IIIIIIII I
-- -
\\ � __-� ♦ � \ / . .� ��-- / , � i /'-\ 1 I 11 IIII II
/ ♦ \ \ ♦ ---' / O ` I,
0
c)
��
�\600
I/V-10/1
LAKE WYLIE/
CATAWBA RIVER
NORMAL W.S.E. 565.7 FT.
LAKE WYLIE
100-YEAR FLOOD
ELEVATION: 571.3 FT.
EMERGENCY
SPILLWAY
PERMITTED SPILLWAY
625
RTH DIKE I 1
------- NO ------625:==-___ i��ll Ii111 ii
NPDES
f I III I II I
� \� IIII I jll /� � II ��II� IIII OUTFACE
iii i ail / i 11 i� hill II11 SWO15
\\\
®€ 1 \ I I III IIII I I I
COAL YARD SUMP
DISCHARGE
(ABANDONED)
r� ► 1 l i ii! i II�I�
I II
/ / r // '// '�� TL 1 A482
\ / _ �- (100kV) l j ill I r li�li iiilil
w
\v IIII lilli l 1�f
�
J
/ \ \ 1 III I IIII (IIII "" \\ cw \ / r''\ IIII II111 III I�+ I LAKE WYLIE/
\ \ \ 1 Cfl � / I I 1 III I IIII IIIIIII
1 \ \ \ �� l I \111 I Illll III III CATAWBA RIVER
P NORMAL W.S.E.
/ / /'/ - _\ •\ i \ I / CHEMICAL ` \\ \\ j `jl w 565.7 FT.
BUILDING
o
\i �\ ► II _Y �° (IIII
j
I I I I \ \ ' \ \ / i r J/ _ I / II 0 O 1 11 1
I--. H 11111
/ Q Q hill
\ 11 I w O iii!
\\ 1 I I I I r f ► 1 r^I \ �'___ //' � ail /' / I ICI � 1i111 iii)
/ 1 ► I / 1 /1 / ( 1 \ , , \ ` ,/
\ I I / ► �/ \ \ -- /a�I / I III I 11111 IllIf
�\
\\\ \
1 IIII I 1 // \ \\ \\ � /�� �- �/� / r-- � 1 J \ \ I III I I i�lll (IIII ♦, \\\
d I 1 I 1 I I I 1 \ N.
\ l`---- ___ 1
-- --
j -
----- _ -
1 \� �--- -- -� � � ,i.\/ ��-/ j � �-..-/
TL 1 A606 _
/ Jill
/ % % / l/ /�/\\\ \\ (100kV) 1 /�\ ./ r / /'^�`� ./�// �- - --' i //' I I 1 111 I II IIIIIII
_-� Ow p \�
If\ /�57 5
I I III I II IIIIIIII \
.\ \_ __ --� \
TL 5N5 \ �
/ ,/ /�--_ _ \
/ /// \�\ (500kV) - _ i - �i 1 \\ i''/ -/ % -�� •�'�~-_ \ `� I I I III I I III III
575
(,
TL 2A10
JURISDICTIONAL STREAM
LAKE WYLIE
100-YEAR FLOOD
ELEVATION:571.3 FT.
(230kV) - — i _ /' \ /%--- ` --- _ - III I I� 111 111 NPDES
_} I I III I1
OUTFALL
`� \ Irl I II111 I I I I I m 002
CHEMICAL / �-------� ` I I I
600 BUILDING /\
I r / /--____g2 / /
\ \\ y / /- \ `_ ` _ / \\ _ •\\ i I / �/ l l/� --- 5�'//ii I I\ \\ \ \ PERMITTED SPILLWAY
EXISTING
WTS PAD
NN
W I
cov
IN, \\\ / 1 / 2
\`♦ \ -Q•.� \ - \ \\ I \\ \\ \ \\ \\ / I\ / I TRAILS
JURISDICTIONAL
STREAM �� ,--- /' _ i 1 I\ \ ► \\ _ _%,--
TENTHS 10 20 30 4rJ' '
JURISDICTIONAL STREAM
ALN C999.001.019
LEGEND
— — — — — — — — — ESTIMATED BOTTOM OF ASH MAJOR CONTOUR (25 FOOT)
ESTIMATED BOTTOM OF ASH MINOR CONTOUR (5 FOOT)
— — — — — — — — — EXISTING MAJOR CONTOUR OUTSIDE OF ASH BASIN (25 FOOT)
EXISTING MINOR CONTOUR OUTSIDE OF ASH BASIN (5 FOOT)
DUKE ENERGY PROPERTY BOUNDARY
APPROXIMATE LIMITS OF IMPOUNDED ASH
ILL LIMITS OF EXISTING RAB LANDFILL LINER
APPROXIMATE ASH BASIN WASTE BOUNDARY
LIMITS OF WATER
100-YR 100 YR FLOOD LINE
HATCH LEGEND
WETLAND (SEE NOTE 4)
Fmm7mmmm POTENTIAL HABITAT - SCHWEINITZ'S
SUNFLOWER (SEE NOTE 3)
z
NOTES
1. LIMITS OF IMPOUNDED ASH ARE APPROXIMATE.
(0
2. REFER TO SHEET ALN_C999.001.012 FOR REFERENCES.
Q
0
3. POTENTIAL HABITAT FOR SCHWEINITZ'S SUNFLOWER WAS IDENTIFIED BY AMEC'S JUNE
24, 2015 NATURAL RESOURCES TECHNICAL REPORT. PRIOR TO LAND DISTURBANCE,
■
THE U.S. FISH AND WILDLIFE SERVICE MAY REQUIRE A BIOLOGICAL SURVEY OF THESE
0
AREAS.
_.L
4. POTENTIAL JURISDICTIONAL WATERS (STREAMS/WETLANDS) WERE IDENTIFIED BY
AMEC'S JUNE 24, 2015 NATURAL RESOURCES TECHNICAL REPORT AND SURVEYED BY
MCKIM & CREED IN FEBRUARY 2016. CONFIRMATION IS PENDING U.S. ARMY CORPS OF
ENGINEERS REVIEW.
N
5. WORK WITHIN THE 100-YEAR FLOODPLAIN ALONG THE SHORELINE OF THE CATAWBA
RIVER MAY REQUIRE PERMITTING.
R
00
0 300 600
900
NOT FOR CONSTRUCTION
GRAPHIC SCALE
(IN FEET)
TITLE
ESTIMATED BOTTOM OF ASH CONTOUR
MAP
ALLEN STEAM STATION
CCR SURFACE
IMPOUNDMENT CLOSURE PLAN DRAWINGS -
CBE
GASTON COUNTY, NORTH CAROLINA
N.C. ENGINEERING LICENSE NO.
F-0342
FOR
ISSUED FOR APPROVAL
SEAL
DUKE
SCALE: AS SHOWN
DES:
ANR
DWG TYPE:.DWG
DFTR:
JAB
�.
ENrb
EK%JY®
JOB
[DATE. 07 - 31202020
ENGR :
J DM
FILENAME:
ALN_C999.001.019 ESTIMATED BOTTOM OF ASH CONTOUR MAP.DWG
APPD:
JDM
DWG SIZE
DRAWING NO.
REVISION
ANSI
22.0"x34.0"
ALN C999 - 001 . 019
B
9
10

ALN C999.001 .020
Ru. B
,
-, �/
/ii%
/%'/' ,,i%ii i✓15,�/"i//15✓c,T� '-'I I 1 1 ///' rl. `\ - \ �A.. _\\ -_—_`--__``- �\`=== = _\ -��Z�_• -\\i•i -\—I \ t`
\-k�
ij'�_'/�i/// -'/i/ /iii%/i' % "/ / /'/--, \ `� \ \ \ \ l --I" `\ \ t- \-\\ \
-%-
- _-, -\----: t"-,-:
xc0
�- )sI -f,
�X,ii'i'-ii'�,�? /'/ /-� 1 / -� ,1 / // -\--\ `\ \\ \ _r _ `-`-` yam\--`` c-J I \\ ``\ `\
„i / / , y p- ' / ,_ ` mac\ O \ --,--,`\ c-1 �(``? Z� \j 1
i/ / -ice / \_- / /- /'- _// `/ , ,� O (� \ \ \ \ / / \ - \ -- _ E / \ \ \ -!/, / ­- \ \
,1"
/ ! / // --' ---/ /,F � of , ( \ \ \ — / / \\ \ \ \\ \ I I 1pv,_� `�\ \ ( \ \ ` .L // -�p \I\ "'' ---�' \ ot" I
I, \ I I \ \\ \ Ai, *
\\\ I I W ---- - \ I \ \ \ \ 4 I of --/ � " --- I \ \ \ \ Otc \ Nk --- \ I,
/ \ \ \ \ I. - \ \ \ \
\I l \11\ \\ \ \ \ �\ I I \ \\ \ \ \`` \ \ \ 1 I ' \11 -- \ /r / \ \ 1 `' / \ I \\ \ / 1 O \\\
\%--\1 \ 0 J I \ \ 1 \ QE \_ I 8 E pE 0 \
j1% , \\ \\ II \\\// I I III / \`� \ J \ ` �`\ '- � of I \ -- \\ \\ \\ \ 1 1 \` p I f \ I \ 1
/ \ \\ N. \ / - \ \ \
14 , I \\ \ r�/ `\ I \\\ I- \ \\\ \�\\\ `\ of \ \ \ I \Q� J/ I I I\\\ \Ii � \ � � � � � \\\ q3 /
II \ \ { e / \ \\ \ _ \ / 1 /
III I \ I r \ \ \ \-__- F \ OE � '�� \ \ice\ ` \ 0 ALLEN STEAM STATION \\� / )
:it / \\ , \ 1_I. \\\\ \ � ./ \\ - \\ ; � -, o4- 1 0 ,{ p� 1 \ , \ \I ` \ \ �l• \) I
I 1 / \ \ \ c \ I \\ / �\ - L ,- J 1 I�,�J/jr \ b \ \\ ! A y O 1/' i /`^ I
I III I� \ \\\ \-. '`I \ \\\ 1 / I. / C.'' W I \ �!-. \ \ `\ �`�` \ p` 7 / /
' 11 / / \ \\) r\l I ) \`\\ / -, .1 / \. rn 0 \fXl \ E` \o - \ \\\ �- 1 % �\
II I 1 J / .1-\ ✓ ` \ N __,------' �=-'' i I I y lam-' o IV \ / p1'� I 1 �\ \ �\ I ✓ __'' / rn 1 /':i l`� `.
11\ / / / 1 �11 \ ---- _ —___-------- C? ; /-11 pE E \ 0 t \ \ � ' J )� ' \\ ' ��IV—'��'Jlii g
i
/' \ ( / / I\ /'1 `_--_-- ----- _l1- ---' �( / i j /i- -tjj OE ��' 0 p � I. '\ 1 \\ \) l \\ , \ • -.- 1 �,- '\_--\ \\ \i�\`,�r,, v�//l/ I I
` l % \ \ `------__ ----- X I ' OE 0 \ \\ `\ \` ) I ' c- \ i i j ,-) / 1 \ 1\\\ , ✓/// I
N I,\\ ` '
- X �x / � OE / I CG`- -\ / O /�//, �' I \ I\ /i'� / \ \ J \ \ ITI 1
/J ' / OE OF - / (7) /0 � - '��p�l4klfice,' c'- - \ , /�% \ - f-'' l' ; +\ 1 1 \ \A I
_ ` OE / Q / / / - / /,// /' \ \ - \ - -- -' \ /- i---i l L // I I , \Jig \ /
- - __ `f OE ,- _�� / / / rr
-- //' -_ - Q` \_- �' - -` \.00 //- ��i % \... V // 11� I'- III I - rr\� /
/it
Ile
��� / __ \11 C�-� - '-_---^--- _- /� I�/ 1 /---" \ �E- _ / OE '// _'_ \ \` \) \.^♦ T--_`- C��`\\ \ -//// \-, 1\\ % 11 L 11 J- /-\ / `1 /
EF
If
\ , I J I `\ O -' IJ / ii''/ )-. \��,\f _-- 1 _ / // !'�\� d I f I ////t j11 -`\\ t� �04*Ij \\I
/ \-----.) - \\ 1/ / -- -I
--\ ___ ! ---- I Q _ - PLAN_ R - �� ��1�\ -' ^ \ -�1 I I l� '`. ,N - _ \ \\'\\I \/ \ ! //' ,I \\ ? (•,'J / OAL Y \/ ,/� /� � /I// `-'-,I I I i //6' \\\\ I``- \ /�\\ I\
T ALLEN OE �` \ \ / / I X
// // I \ 1 / / \\ \\-`__i i -----. ----- /-, ---' /----\ \ `\ \- I 1 I \ /� ` s\\ \I I /- / / %i I III , I , ( I \ \ \\
! / \\ 1 I / ` ` _ .- , I - \ I► / �\ \\ C YARD I / l 'I I I 1 \ r'1
\ 1 \ \ I - �V, � / i ,'' \ �__ ' ---`- `\ ` - ` \Y -- \ 1 \1t .-. v-/ •_ _,� 2 , -,/ ) /r / / '//' I I lJ \ \\ O Ia\ )
/ I - --\ \ / \ \ \ , / / / I I
/ /' I \ 1 ) , 1 I \ I ♦ ) - -'� / / \ /' / / / LdlY,----- -� ���� ---- ^ �`\� ` ' ^ \ \ \\\ \ ) ✓' /"\ j /1 % III j I I \
I \ I I \ / / / r- - \ \\\ \ / l i � I \\ \ 1 ✓ \ ,., / I / I I LINED
/ ) \ 1 I / / \ \ ,/ (' _ / - N� / /, , / OI.- -� -'^\- � �\\\\ / J \ \ \ \I \\ I \\✓/_' I-, / / / / 11 �l /� 1 I I \ /
/ \ \ _ , \ -' / \\\\\\ r \\ \ \ r / I Il / l I I I \I I / -/ \\//^ \ \ / \
�-' \--�-'-'-_- � \\\\\ // \ \ I \ \�^\ 1 / �-. / I j /l/ /q I HOLDING \ I I I
\ , I I I 1I I, pC♦I 1 _� T�---_--- _-O' iii---'�'' �.\ / \\` \ / // / ` \ `a \ / 1 \ \ '+ ,� Y/'/I (1 I / / 1/I< </ I I I 11 \ I I
C�===-__ ___- -- I \ --- .,, � \\\\\- -�/ / / / / `\ \ \ \ r ) \ //, �.�// 1 // / I 1 I I BASIN \ ► 1
I / J I I I I \ 0 1 , `�/. / ---- ---- - --- --------- ----' /�\`- -'' -\\\\ `--' / / / ! \ \ \ �c \ \ �i° 1 / / IIL� �I 1 , \ I I
\ / I \ \ \ �_ / \ I / 1 / I / I WE 5n.z
<<d/ !- / -/ Q -1-�- O� \ \ / / / // - -- _---- _ - - '/-. -\ `'6,� _-' / / // , \ \ r \ I I \ Q / / I I 1 -) / I \ I 1
OE �= OE OE / IQ�E - -1 / ,i — / -- � — — =---'--- — ----- \\ O ` ) \ / \ I I
Otl I ' O 1 DOE\ i i / --'- :' / ,,� - __ _ ------ __-- - _ `- `` \ '`---- ; /% /-'�`\ `\ \ i ) \�- \\ r"" J/� - \�/ I \� _ / r 1 \ \
I.
t/ I l I-- - __-__' ' -/' / - //` \\ I'----
� '/' � / / //'//-__// /%,/ ___-_-- '-` -__-- -` - �?,- , sk _-` / // // /'/^` ,.`\ \`\ \\ I.
,x - ' \-..�4 \- \I _ jf \ 1 \\ (
_ /� _ __ _ _ _ 1 ti I \
l / // �_ / / , / \ ,' //// / _ /i//i��� -tit_ __ _ i /-�_ _ \-U\ \ ` r- ✓ / // v /\ ` \ ` \ f / l I `-�-_.- f I 1 \\ I I I
X I 1 / -\ / / \ - / /'/'/ / r-/ i --� , `�-C�_�iE} __ ___- - / iii'-`\ ��_ - ----\` \\`\ -\i/ / /•/ \ `\ \ `\ % \\ Q 1 /_ �1-\--_''/ ) I , \
ki1 i / r_ -\\ ✓ // _�-- /,-// I -/ /-j� -1 _ _ _r , ' `- -� 67 `\\\\`\\`- -// // _ \\ `\`\ `\ I \\\ / \\ _!' \\ 1 I- -__'/ -\`-I l- ,/f�\
�, / / / \ \-� /_ --�___��_�_= - �'/�/��/// �WC'_-% __ ____- _'_�--'i%/ _ _ _ - ``��. \ O `"\\`� �� �J /'-- -\ `\\ \\L\ i� -J-' L/J `'_'S__ \J\, _ - //J I I
I / / / ! - _ _ =ate \� \-\` \ \ ` \\ \J l \ �_ /
/ / // / / _ /��� -\ \\ \ \\ I I
L Il I - / / / / - / / / �'� __ems\ r--=��=% / _ _ o\\\\\\\\ \ /-- \_, \\ \ \\\ \ \ \ - / _ �. ) /I1 x I
I.
/ / I / / I �UNN,� \\ \ ---- ��/� / /-Lil -Vz\ - _ - % \ - S \\ \\\ ��\ \ \ \ \\ \ - _-'- - \ \\ \\\ \ ` \ I \_ - - - ' /' V 01 1
1 I I-\ - \ \\ (' \\ O \ \ \ \\ \ \\ \ \ \\ \
I I l / I I Jf -- -'-__ ice' - -��Q u 10 -� \\\ \\ \ \ \\ �� _ `�------------_----_- -- 1 I
I I / I / /\\ / ----� ----- \` --_ \ \\\�`\�\`�_�__ =1 EZ_`� 6' \\\ ul'\ \1\.11 \I \ \\\\\ \\\\ \ \ \ \_�- -- , \ \ \\ \----------- ---- -__ _ d _ \`\` \ _ II \ \\\\ \\ \ ' / \ ` `\` ` \- _ _ -____; RETIRED ASH BASIN DIKE _____ i 1/ I
I I , l / , 1 -/ / TL 1A606 (100kV)=__--____==='�I'- - \\\` = 10 \ �\ \\ \ I \` \
I I 1 / I -/ , - \ \ \ I\-, = z�: - TL 1A482 II \ \1\1 \\\\\ `\-_� //�-\\ `\ `� �\ -----_ - - - `\\ \ �J
I I I J , \ --- -----'--- `- - \, 0 __ \ - \ 1\\I\ \\\\ \ /„ ) \ - \
\ , 1 1 I 1 / I If \ - \ \ - \\\. (100kV) \ \\ \ \_/ / // / I I \ \ -1111!----- ---- -------------------------____-- - -\` \\ \
J \ l I I I l / J TL 5N5 500kV `\ _ -`-\\\ �\ 630 \\.\\ \.�)\�"., )t, \\ \� a\\ \\\,` , /// , 1 1 \-------- -- - _----------------__ --`_- \ \ \
--_ - \\ ` \ `\\\\ --- I 1 _ �� 7T- - \\ \\\ \ t
/ I I 1 1 / \ \ ` \\\\\ dl \I \\\\�� \\\\ - - .\ \III \ '_ / _/ /i-- _ � \ \\ \ > I
I 1 11 _I \\ I W \I \\ ___--\\ `\\`\\ `\�\\1�\\ \IIII\\Q\��\\ `, ,\\\\\\\ `�`___'/// 11�� ` ------------- - '_=--' /////' / / T= --- = - �`�\�\\\ \\\ \ I
I�>O / / , \\ \\ \\ \ \`\\- I`�___------------ , // , ram/ /- -�\ \
\ I \ ,t1 IM, \\\\ I\\\ \ \ \ /i / , / -- �- \
1 1 - I /- - J I I\ ) IM11ll\\ \\III \�\\ `,'I "-- - ` - - ,,/ / '/ _-i / / -� \\\ ; I\\1
\ - - - 1 ; ', �> ` --`-- - --' % -'-- .'' / (I► 11I1j,I \ ,I \\\ ` - \' __ -�` __=s-==== __ %/- / / , - / ,-/, -,- \, I\1\��11� I►1 ,
I \ O / -FAO 3 ) M\ \ \ \\ \ -= -- ��-\\\ _ / / / / / - // - \\\ \ \1 \t IIII I
/ \- Cp �/ ! - I I lI1,I11\\\ \���\\\V�1\\\�``,` --\`-` `_ ��__ —� = �-__-- --/ / -•/'-/ / / , / Will',
\ - ,4 . . / /-' I I , ,\\\\ \ \ \ \. --- ` \ - _ _ /_ _ __� `-- � � --/ / // ,-/ // / �- III III 11II I11 I I
/ - / / / - / 1 I1 II 11,1 IM \\�\q
\� - - \__ - - s- ___- \ / / �� / �/ i / / / - IIII II I IIII III III I
/ _ - I \ \- `--` - \ -� _ - a� _ -- / / ' / , / , IIIII 11I I I l I I
-_ --- - / 1 r - J I / / / / / f I I It11,11\� \\��i� \�� ��\ --_ =�c -_� '� `��-\ 'r� -- --i /�, /' ///,/ �fll III II I IIIIIIIII IIIIII 1
-� \\ �� /
--- 1 , / -� I / _LI- -- / / 1 / -J rl III 11 \\\ \ \i \ �-�� ___ _-____ �'_� 1\\ '-_�_ /' ' /, I�I I I II 1 - / 111 \\\\ � -�� r„" �- \ �% / / �I I I I l I II III IIr I, \=� - it
- J W C� LIB /'/ I I /'I r I I I I IIII\ \\�\!=`�a`\\iss \ ��_i'�- ` ^--- ^ __- — _ --' _`_ '� /, / ///, �/, �` o�lll III IIIIll111 IIIIII
/\ I I i4 IJ-I'' / / / LvJJ/ ✓J r III`\\\ _ __ '`-`- _ l= _ =_� ' `- - l\oi \___✓- �- // // // �I IIIII \ IIII II� Ili I
O i -- \ / - /� , -/ 00 / I I ` `-- - _ \ �`� - - -= �a� `\ -\ ` `- �, ` / / ----'- / / / / / ISO I I /IIIII 111 I III I
____- - �\ \Q \ 1.___�--� - \ ---\
TL 2A10 (230kV) r /-____-' ' � / ' 1 �1 - \ -` _ _`` \ \ �-i / / / / ili III IIIII I I 1
/ �. / / I > \\\ `�� \ - �:-a`\ -\ r\ , / II°oN I IIII I I 11
11 / \ / / l I / l \ \ \ \ l _ __ _\\\\ \ _ \ _-� -- - , I1 1 III I I
- / / ----------'- l I 1 \ 1 / 11 \\ 3� \ \ \ -- -` t-\ .'' -__ �/ / / III ,
y / , ' / /' \ 1\ III \/%'!g `�`--\-- \\�-\\� -\- - \ \ , /- / I I
ill
/ /r---- �11 ----\ l ' / -, / \ \ -, / / I I I - \ ` \`\` \\ -\ \\ N\ --- -/ -/ -- // I IIIIII �l !IIIII I I I I l
I l A J _ / Ixf / \ - / 1/ ✓/i, - -\` \ \\\\� `\\ /' / /III/1101111 I I
/ / \ 1 / / 110 W W / \ / I / / l / /i \ \ \ \ \ \\� , \ \ / / - I 11 l I
/ / I ` \ / // r`i - ✓- / \ / , / \/ii ' -. \ \ \ \\ \ \\o- -� - \� \\\, - _-/_= I. / - / II'111C0 IIII IIII I I
/ - _ \ / J /l r _ ,O' -/ 9--��- -63� -,/ / I / r' /' / i s' III ///�/' \ \\ \\ \\ \\\\ -,,\,, �-,, \\ \� ` , - ��\ \ / / / ( III I/ 111� 11 l I l I I I I I
___ _ I / / 1 ! / O �1i1 / - ' / / \ \ \ \\ \ \\\ \\\\`\_=�* a- - �;� \ ( / // 1 I III 111 II I I�I I I I
-------- / \ - jJ / / \ )�� -' 00 JJ / % I % / ' / / j / I \ \ \ \\ \ '\N- \ `�-,\ _ _�- -- --\ \Il\) I I I III I I I1 I I I
-- \_ /,� - - / 1 I \ \ \\ \ \ \ \ --_ __� ` 1� \ // III I I OII I IIII I
--- -- _-''-_ /' ,' I - -- `-_ - ---- -' � /' i // / / / --- I% \ \\\ \ - --\� 1 Il \ `\ / / IIII11I111 li0 IlI1I II I
,,' -------' - -, , lJ \ / / -' / -- / / / / r--- ___ - / l I \ \ \ \ -; = ��� \ \�\ \ / JIl I / / / 0` Il IIIII IIIC\I II I I I
/ /' - --_ �- /-/ 1-1 / -- ----- -- i --, , // , / / // / \ \ \ \ ` _ \-- ( / �/ / / / / / O / 1I1 I III III III I I I I I
- / _'---------- --- \ / _ - - - - - r / / / / - \ \ \ - - ���� ` 111 //%lI/ 1 I 1 / / 6) /IIII III II II IICO III III I I
/ /' r-f' \ -� / - ----' /%/ /, / / \\`�, -/ ! \ \ \ \ \ /�/i r, / / - - //'/II I I I I I IIIII III I I
/ J I _---- ___� / `--- - / / ' ' / - ., \ ) \ - -- I. \ ' / / / / // / /-------- __//" IIIII III I I I I I I I , \ -`_,__ -_ - / - ------ ---- / // // / r--- - \ \ `\ - --_ \ \\ \ I 1 I ) /�/ O 1� / �/ / / --___ '///�1 I IIIII I
' /- \ - _ / / / / / \-\--, ,I \\ `\ O / '/ I �D/% -6 o/ /' / / - / I I IIII I I
\ - -CJ Ict? - �' / I, . \ \ y / / I -'�S_- --- // l I I I I III III 1 I
11 / < I I"/ \ \ -'"'. --- --- O 'LLp `-- �6 / / / / ./ - \ I / / 4� // �,i / ,, / /-- /', /I I I I I
/-----\ - - /- -`-- ---'r' \ I ' �' \ \ \�_-IIII f� - --- I / -, /- , -/ ,✓ _ \ - i O I 1 // ,,�I / �/ -/// / \_`v/ IIII /, f .'/ I I I I I I1 IIII I I I 1
/ -_/ ----- , -- //'-'-` \ / ' 1. ' -\ ili�iJ - / // / --- 1 \ I lO///j/�/////i //,- , /�- / ,-///- I IIIIII IIIIII IIIII III I I
`\�
/ +- // �/,,' �\ \\\ \I ' /' \ J i - �1''' -/ -, -/ // _,//' / / J �//r / / ,%� // _ �/ j/ ' / / l I I I III III I , Mill''
/ `\ / ////� / 1 /- \ l /! -` ___-- /' , i' /' _ / %/ /'' ___ ";/, Ill
/ IIIII II II I1
/ \ _--' ) -- // // /-\ I I I ` / ! ��� �-- ---- -' - -- , -/- -- ---- �- -- // „//i///� r I ( (f // / I I
// / ���---- -- ,/ V/,/ 1 I I I I 1 I I _ / t (%� . \-� _ -'' _ - '� %'� IIII I I I I I II
Jnow -� �_��-------�__�� �i�/ ,-\ I I I �/ 1 1 / �- ' /' 1 / -`,,:, \__ ---- - _-''' �_�''' //'- __-- - ---- / /_- / ,,--% /-ii%/,% l // , / ' - ' ' '� I l I I I
----- '- N� / / _ / / //,� ��iJ l / I I ,/ ' '~ / //'/ //// / I r l l I IIIII l l l I I
-� --/ / 1 —_ -_ ----__ 6 ,-----/fi--��� �/ / r )' I I III 1 1 I
/' /-i-- -----' _ - - - - � � ,,, ,i'--��\ \ ` \ I l I / /// , - - - / / l/ _��\-\ -\ ----- _ - /� �/' /' - --------`// , _ice /-i/ g/ j / r \-/ / // / // // /// / IIII III I I I I 1 1 1
------ ---- / - _ .- / -' / �_ /i IIII, / I I I
Ci , _ - ___----''� , \\\ \ I / / //// �'L�I :ii- -/ /,, i - \\�_--_-' \s��� /
/ / /' ----- / ��—� - /,IIII'' `\`\\\ \ \ \ /' //// / __ /i- / / / -_ '- �'-_' �'i / may/ / I / / / / I I I I IIII II I I
/ /i - / /i \ _ , /' _ `--- _ / - / - %%IIII%%i'/ / 1 ♦' /' / ,, /'/ , / / I / I I I I l
-- '' -- ---`-1��/ / - ^� i'�'/ / / / - /i / // , - / / / / III I I III IIII l I I
// // / �i/ /---- ---- i',///�\\\\\\ \ \ �, i, //� -' -- _ 1 --� -�__ �i / _- / /, , �i' i- iii,; // /- / l_i z / / / //, I I III IIII III I 1 Ill1
/ / / ---- - _- \ \\\ \ , ' / ' I =-- - ''� -- ` � _ ' _ -- _-� '- ' -- - �, ��/ IIII i , / / I I I
l 1 / - - ------ _ / ''_ `\ \\\--���� _ _ l - �___ _�' _ / - -'- , ✓,- �' ���/ �// / /-/ / / , -/ / / III IIII III I I I
\ 1 _' - -- / ` \ \ ---' /� �- \ 1� `�- - __ -' ' , �, /✓/ - - 9- /// / / / / / - r 1 II I 1 II III I I I
\ \ \ , / /,' - -- � - -\ �_____� _ - ------^---------__--- -` -`-- ------ ,------l- . //���.� "/ , %� / . / - : - I / 1 1 III I
\ - // /�./ / , ! I -/ / III IIII I I - �- \ _ _ _ / - - / I I
\� / l _-- -1 - _ - - - - - - -/- , // - // - - III IIII I I
'//� --- '_-------------- --_ - /----_- __--_ -
/ / / / / / %/!- / / / ( /III l III IIII I I l I
\ - \ \ 1 ` N_ f' / / \ ♦ / ♦ - r----- - \ _ -,' -'% /, / /i / - // - , / I I /// I I IIIIII III I
\ � -_- \ \ \ \ \ \ / 1 1-' ) / I, I \- \ \ / - /'/ , / //// ��j- // / .1 /I , I IIIII I
`- , , /�, / / / , - / /III IIIII I
- \ \ \ __1 \\ \ ,-- / / / , / I
\ �- \ \ \ \ \ \ - \ \ l \ \- I ) L,.1 ` \ .I �\- - -\_^-_ -\\\ -\- / —,ji' -, ,' / , IIII/ /ii,' / , // /� j_ , ! I / IIIII I
\ \ \ \\\\ - - \ \\ ��- , \ _ Ii,\ - 1 --`_- -\\ _ /- _ / / / / /' - --, � I IIII IIIII ,I I
\-- � �'�, - -\-__--_ - -\ \`\\`-__�� --__- - - `-- \ --__' --' ---- / --- '//i / III
\ \ \ \ \ - \ \\ \ , -CiJ _0- _Y'L _ `\ I -� \ \� - �- - . , /�/i,//i, */ / /% _ ' ,i'i '-'' '\._/ / I ll I I I IIII III I I I -
\ \ - � -___�_� \\ \- ``�\ __ ��_--$_�-�_ �- \_` �\I C�\� -11 --------- '�! :��_/�,�✓�i'/��//- J/ / !- ��Jfd_ /'_,' "� /, IIIII IIII I1j 1I I I I
\ - ` `------------- __ - - _� ``\\\ \ -`\ ICI r '/- -,/ , f I �_,J ��-_��_-'' - - / 11 I I I IIIII I I l l l l
`- \- -�\-�- -\ -\__-__-__--=-- - \ \\-\ \ \ -✓ //// - - ' / ( -_/ice,- -�./ / I I I 11 I , _
-- -\. - - `�- \ \ - ---- - _ -_ �� - - `� \ \ \ � `-- ^✓ / / --_� -- % / J __ ,// ,' _ / I IIII IIII I I I _
-\- _ !� �� - ----g _ \ - -� 1 \\ \ \-- I— \ / J 1 11 / _ - -/ ,r , 1 1 1 j � --� j��_=_`\-\-'.\`�\ , I IIII 1 III I III I I I I -
\-_` /' \ \ --�-_--------___--c-_-,'/'� �- �\: \` - - --`�\\\\`\\\ "- `\ \ - - " /'//- - - ��- ) 1 /V % ::-- _ --\ \,- / J I III IIII II ill I -
\ ____ _ ___-_-__j_-_- - -\\ / \\ \\\\ ---\ _\-_- \ -- --=�i� - i! ,J t ` 1 I I �1\ r'ii'�� \\`�`\ \, \ / / I I I I I (III I I l l I -
/, , -" \\\\\\\ \ ✓"--- \\\\- \ \-� ^ - \ / \ - . • ' , 1 ) //ice, �\ \ \\\\ ---- / / 1 1 I I I , II II I I 1 I I I
- \ \ \ -_//, _ \-\ \\\\\ \ / \ \Q` ` \\_- - \ / I�//� 1 I % //i ___ \ \ \\ / I I I I III I
\ \ \ --- ` yl� - / , \ \\ \ 1', / -- \ \\\\ \-\ \ - `5:9� IS\ - �\�� \ \ ,' / ////�/'/ ,/' _`\\ \ \\\ _- / I I ''Ili
\ \ \ \ --- _ - - �`\\ `�-__-__- - \ \`� / /iii /' /:-' \\ \ \ \ \\ \ I I I I I III I I =
\ \ \\ \ - 1 /�/ , \\ \ \\ \ , 1 I I II II I I I
\ \ \\ /�/ -_ \ `\- ' ' --� — =C_— \ -� \\ \ / I ( /'/ ,/ ` \\ \ / 1 I I I III
\ - 1 i�, =; \\\ ��\ _/�/� -� �� \\.� _ _---- �- i E \� f IIIII// �� \ \\\\ \ \\ / I I11
y\ \ \ -_ l 1 / / / - 5- -\\ \ \ - __ -\\\ \\\- -- TJyFi.l `` __- '--` \, ' __- ��'�`'- ` / /�, /'/ \ I 1 \ \ \ /
\ \ \ `\ -___- I / / O -\\\\ \ `� \ ---\z��\ `:�.\ - 1 ___ _ _ \Q\/�-- - �a Rom_\� �\ / �' ''/ '' /'' ` ` \ \ \ 11 \ \ \ \ / 1 I I III 1111 1 11 I I I IIII
I ' /' / ` \ \ \` ___--_ ` _ \\\\ \ ___ _ \\' /___�-`---`- ` - O \ \ /� // /i' -'/- -'' /- \l\\ l j11 1 \ \ \\`- / I I I / I I I
I I \ 1 ------ -_---_ - - \ \ \� _- // / / - \ 1 \ \ \ \ - / I 1 / I I IIIIII I I
\ \ \ _ ----- \ \\ \` = = --- --\- _____________- ` _ - -� \�\\\ �\\ / /♦✓ -' /' , 1 1 1 111 ` \ \ \ ---` / %% % IINI'jllll IIII I/'
.- -- , \ - \`
_ _
1 - - ) \\\\ - _ _ \ l // -6 \ ----------- ``-// __- `---``�\`���\4�-' 1 / / 1 1 Ill `_ /4/ I (/
1 \ - -\ \ � Il'll -- \ - - - _ \__==-----____ -
__
--- / / \ \Lei \ 1 --_- ) >\t \"--- \\ \-- - -- Ill✓/ / - \\ \--- _ i- `� \ \ 1 - , / 1 1 -` —L ��_ =----- ,__`/'-/ r/ /
- -\ ` -I.` \ i _ / - ` 'Q_ \ I -`\�` -�\\ `- \ --_-- \ \ ` .. %-�� III,\\\�__'��_====---_ ~\ _ \\\\j// / ___ - �a_�.a_aa��a����=== �)'��r� // J r
_ -_a_�_� _ - _ _
\ \ - I / \\ -- _ I \ \ - `� \ \ \ `\ \\\ `\ \\ \ \ ._/ /, \`_ `--- ------ N _ - -- ___-++�--�"--`�'"c=sue — .--- r_r -- \�/ / I
\ 0 \ \/ \�- --- \ \ \\\ \ \ -_\`\ \- , ==--s-===--_-___- ___�_c__�_ ��___-__ =c _ac _�__s ` IIII / / / ( / -,
k I
// - \ --- 1 �i ---- \, I\ \' ) \ 'I \I ``- ^ \ -------_- �_ - RTH DIKE �s"" _ ____ __-_=�= _ _-__���s "'=_'�\� i I I l i IIII ,r '
/ 0 0 \ \I `\ J /, I t 11 \\ l cI / /-/ I ) ' sue_=-:sN-1 _ i1�Ir_ _�= �ssWs _ _ ______ \\111111 I I I I 1 IIII (' r
/ \ ` / -- , \ l \-_--_' `` _ ''` / s _ _ -- ___,�._ IIIIII III Irk`-'-�_____ _ _ �_-=.+�cs��� II 1j I111 II 11 1 1 J
1 \\ _ \\ // ,''_-- I (, ---- / ,//,� _ _ --___ __FIZP4_�"-` __� �� II IIII IIII Ills ___ / J /^ _--/1 )\t1 t f / -'! ra'll 11 111 III III I I I
%. , \ /-'/ -\ \ / // // - ===�- -',- /- — \ \ I IIIII III IIII I II --/ / / 1 / ,,/ I II 11
- \\ / �� c!� I I I I / / /, / // III I I IIII IIIII I
/ 1 / / /��__y r r /r ��
♦ / l I / ♦- ,- 1 1- /i/ r-- , - l I I II I I IIIIIIs -/' _ / / )I / I / / / +IIII I IIII III I I I
/ j \ `_r` \ 1 `\6 , \ \ I �� / �, / 1 IIIII II II III /- / / / / I I II IIII I
\ \ l \ ,' I \ I I I II ( \� ,/ -/ J I i /, // /' ,' , I IIIII III 111 III 11,1 I� J J /-- //� / ,// - III IIIIII III IIIII I
, I I I - / / /, , , , I I II I I I , / / / / , IIIII III III III I 1
I \\ �---- - -\ 11I IIII ll I \ ' / - % /' / ♦' / ' I I II II I IIII / -I!/ / I I II
I I I I / / / / / INI I I Illll IIIII / I / /- /// / \ I I I I I I I I / //
I / / / \1 I II II I 11 / I I I i,l i
/ / / \11 I II II I 11 / r
\ \ `-- I ---- I / I I \ / // ` / / //' / / ' / l r I I III I III I I�II� I ' % ; / ; / f / / I �, I 1111 ,1 w 1 I 1 III I
\ - 1 J I I / / / // / ,'' "I \ )\ J I I 1 IIIIII 1 11 \ / I / / IJ I l I [Ill
1 \ `---I '- \ r ' _ / / I ' l ll l / / / iii 'i) ii ilyl �1 I I � - /r ; ( COAL YARD SUMP
\ I\ `I \ /' I ------_____=/ ,Jl/ I I x I 1 / / / ` i///r'l J/, �)\\�\\It`\ I I I 1 I / \ Ik \ ( DISCHARGE II 111I
/// / / I / I '- \-/ // // / \\\\\ \�\\ / l l 1 / / / \ Ill I I I I
/, 1 `\-, \--- /// / - - -- j� I � / S I () _� \ J /�//r,(� \\\ \+) I I I 1 / (ABANDONED) I I
J , ., / - /--- , III / / �_ 8A 1 III,,,1 Ill II I I II I ► \)� ; /il I I'1 III I I I I ,
\ I � /I/ // / -/ -� , i/// -- _ TL 1 A482 / / /./ / / \\/ 1 1 1 I / / / / / 11 1 f/ // , III, I I ), I I 1111 I ill I l , l I
- / - / , / - / /!/ / t /C ' / / / / 1 1" IIIII I I IIII I I
--- / 1 U II I�i 1 /� l (f i l it it iI I ill 1
1-------- _ / r / / / �Q' /' -, - ' / /'� — - (100kV) I / �I I i�11'� �___1 1�l ®F 1 �L / -' ,/ JJ I j I fr y/ /� IIII III 111 I I III I I I I I I I I
-- / / Q) - ,, , /-/ ,/ / / ' j -_ 1�l t\ l 1 l , �- r - / / I I I I I
/ / / ,-'� /i/ / I ' ` 'I II� II / / I f I II I I I I I I Ill
I /1 / - ,/ , -/ / ,/ // / '" �/ f /' /, / I vv \�� _ ✓'/��ll / Y�f� n,l I III, / )IIIII 11 III I IIII 1 I l I
/ - / ! _J /-_� , ♦ - / __-\ \,�\.�---=�tE// _l' / /�^� fVafG1� 1/ / I II I I III I 1 1 I
/ / / 'i / / / , / / , / / / \ / \ _����:rir / / n IIII I I I I II I I
/ I, ., //i / O / /f / -✓ l / / / \.-- -�--�/ l/ r / II II I IIIII I I I
/ /,/ ! / /i / , , \ ` / - / / / '\,�= w._�/ J/ // / I / / III II I II I I I
Ir-
' // / % \\ I I / j / / / I - \, ' / ---' 1 ) ;III IIII \ ill
I I I
/ - / / / / � / // / /// l I I I I ! / ' / / -� - ✓ ' ,-r--- ^' / ( / 1 1�111PI \ \,IIII I I I 1 II I I
- - - ' \ / 0 / -/' / I / / / ( I l Ni 1 1 / -- / / / // / ! / / I/ / / / / 1' 10 1 ll� l I I III II 11 l
1 / / / / / / I 111 \ II I I III
- - / - - f / \ \ / / / , /' ,/ f I l / j / 11>tjllll ), IIl1 111 III I IIIII 11 I
/ I 1 I I / / / / / II I I III
✓ / / I , 1 I \ `\ / I // / / , , -/ / I" -_j / / ,t III I I II II II III II I I r
/r /// , \ / / / I , , / / I Iltl I I 111 I 1 I
/, , I \ \ \ 1 \ I / / / / ,, /- / / • ' / / I'1 t\\\�\� 1 ( III III III III I1 I I I I I 1 I l I 1
-/ // 1 I I \\ \I / j % / / I �/ / ----/ % / ' \\\\ I I III I I I I
/ / ' / I I 1 \ / % ! / ♦,------_� / / 1 \\ \\\ IIII II II IIIIII I l
W / I I ) / / / / / / J / / \\\\\N \ III III 111 l l l l III 11 I I 1
1 �' I / O / / / I // - - -✓ ' / i \�\ \\ I I I I I III 1 III 1
// // /' I / I - - � I / ' i \l \a\�\ I�I III (I li IIIIII I
- i ✓ J /J l ' _�-' I / l % / I /!' -/__✓/ / / 1 \1 \ r II II II I I 1 II II
I III I
N / / / / • / / 1/ I I
-- / - \-_ - . J , J -1 - -'-- c0 / 1 1 i / / - /' , / I ' \\ III II IIII IIIII 11 I l I I
_ , / - / 1�` \ 1 I 1 III I 1
/ r , / / 1 , I1 I I Ill I I I
/ / - ''� � /_ r- -,'''� -- / / / I ' I / r / / / / I• / l \\ I I I I I I
I_,' - _- / / / / ,- i � ,' I I / / I I I III I . I I I
' ,/ / / \ / -'- r - I f I I 6) I I , / / / I // / I \ 11 Ill! III III III II II I III I I IIII 1 1
/ - _ / /- / -' 1 � I I / /- / \ - II I I I II Ill \ \ -� I I \ 1 I 1 ,' / I \�l \I II I IIIIII I
/ - /'' r1 0 \ \\ -\_` 1 ! 1 I. \ t 1 , O I I ; / I / /, _�/ t \\ I // \ !\III I I IIII I I III/
\ _ /' / l \` -- _-- \ \` I. / \ 1 1 \ 1 6) / \ \ I //'_1 \� / III III III IIIII I I l I I 11 I 1 I
- 1 --_- -`�\ \_--/ 1 1 1 1 1 / r \ / \ 111 I II 11111 1 I I 1 I /I
1 \I - - - / ��_ _ -� _ 1 \ \\ 1 \\ \ 1\ 1 II O / / // -- ^\ \� 1 \\ 1 / I \\ \VII III IIIII I 1
- J -� \--_ \ __- I \\ I I I III l I I I l I V
I I I —a \ J _- _-_ \ _ - -\ \ \ \ 1 1 \ / / I -�\�\ \ , --- \
`-_ \ O z-\ \� - \ 1 - \\ \\ I - \vl I I 111 I I I / / - _-� _ \ \ - \ \ \ I I / -- \ I ✓ 1 I I I III I 11 I
0 /' ` / 0 --_29 --- \ ----- -` -- - -`\ =� - \\ \ \ \ l / / /r C� 1 \ I / - _ \ I IIII 1 I I I I I I (1
\- \ \ \ O l a k I /-- I I II I I I I I
_ _ \` \ \ \ `\_ \ \ \- \ \ \ \ \ \ I \ `_♦ 1 J I'\ ( - \ III I II 1 I I I
\ \ \ _\ \ \ \ ` \ \ \ \ \ \ \ / ( / C(� 1 \ 1 / �\ / I I IIII I I I I I
1 ( 0 \ - \_- -- ---- \ \ - - -- - ` ` 2 ,: // 1 I / \ I I III I IIIII III 111 I
1 1 0 \ - -- ``\\ ` \ \\ \ `\\\\\\ \\ \-' \ \\ `\ \ \ I ( I I 1 \\\ \ / / 1 r ,'I II II III I l 1
- 11 0 / \4 ---- 0 ------ 1\\ \ I \I\) \` -`\ � \ \ \ \` \ \-- \�\` \ \` \` \` \\ \`\ � 11 1\ \\ \\ \ \` .`-__- , ,�/ \ 1 I \\- 1\ -�/,' , ,II I I I I I 1 III I III 1 I I 1
/ rL - �� \ _ -I!I I \ \. \. . \ \\ \\\ \. `-�_ -.\\� \\ \\ `\ \` \ \ \ \ \ \ \ \ \\��-'__ `\ \._ \ \ i I, III Ili I I i I l I 1 I 1 I I I I
INCHES
TENTHS i0
0
LEGEND
— — — - 630 - — — - ESTIMATED BOTTOM OF ASH MAJOR CONTOUR (10 FOOT)
ESTIMATED BOTTOM OF ASH MINOR CONTOUR (2 FOOT)
— — — - 630 - - EXISTING MAJOR CONTOUR OUTSIDE OF ASH BASIN (10 FOOT)
------------ EXISTING MINOR CONTOUR OUTSIDE OF ASH BASIN (2 FOOT)
DUKE ENERGY PROPERTY BOUNDARY
— — — — — APPROXIMATE LIMITS OF IMPOUNDED ASH
LL LIMITS OF EXISTING RAB LANDFILL LINER
ASH STORAGE BOUNDARY
— • • • • LIMITS OF WATER
100—YR100 YR FLOOD LINE
LAKE WYLIE/
CATAWBA RIVER
NORMAL W.S.E.
568.7 FT.
LAKE WYLIE
100-YEAR FLOOD
ELEVATION: 571.3 FT.
I N
I I
I
I
I
I
— EMERGENCY SPILLWAY
APPROXIMATE ASH BASIN WASTE BOUNDARY
HATCH LEGEND
WETLAND (SEE NOTE 4)
POTENTIAL HABITAT - SCHWEINITZ'S
SUNFLOWER (SEE NOTE 3)
NOTES
1. LIMITS OF IMPOUNDED ASH ARE APPROXIMATE.
D
r
2. REFER TO SHEET ALN_C999.001.012 FOR REFERENCES.
z
3. POTENTIAL HABITAT FOR THE SCHWEINITZ'S SUNFLOWER WAS IDENTIFIED BY AMEC'S
I
0
JUNE 24, 2015 NATURAL RESOURCES TECHNICAL REPORT. PRIOR TO LAND
DISTURBANCE, THE U.S. FISH AND WILDLIFE SERVICE MAY REQUIRE A BIOLOGICAL
SURVEY OF THESE AREAS.
4. POTENTIAL JURISDICTIONAL WATERS (STREAMS/WETLANDS) WERE IDENTIFIED BY
O
AMEC'S JUNE 24, 2015 NATURAL RESOURCES TECHNICAL REPORT AND SURVEYED BY
0
MCKIM & CREED IN FEBRUARY 2016. CONFIRMATION IS PENDING U.S. ARMY CORPS OF
ENGINEERS REVIEW.
O
N
5. WORK WITHIN THE 100-YEAR FLOODPLAIN ALONG THE SHORELINE OF THE CATAWBA
O
RIVER MAY REQUIRE PERMITTING.
o zoo 400 soo PERMITTED SPILLWAY NOT FOR CONSTRUCTION
GRAPHIC SCALE (IN FEET)
TITLE
ESTIMATED BOTTOM OF ASH CONTOUR
�
MAP - RETIRED ASH BASIN
�
ALLEN STEAM STATION
CCR SURFACE
IMPOUNDMENT CLOSURE PLAN DRAWINGS -
CBE
GASTON COUNTY, NORTH CAROLINA
N.C. ENGINEERING LICENSE NO.
F-0342
FOR
ISSUED FOR APPROVAL
SEAL
fmlb.-
DUKE
SCALE: AS SHOWN
DES:
ANR
DWG TYPE:.DWG
DFTR:
JAB
I
ENE RGYC
JOB NO
DATE: 0763320020
ENGR:
JDM
FILENAME:
ALN C999,001,020 021 ESTIMATED BOTTOM OF ASH CONTOUR MAP,DWG
APPD:
JDM
DWG SIZE
DRAWING NO.
REVISION
ANSI
22.0"x34.0"
ALN C999.001 .020
B
9
1
10
1
0
W

I - ---' 1 \\\ -- -- \ l�---�, \ 6-----_------- \_/ - ` `" ``� '/%�' I / / ) 1 \ \ \ �` \---___- / A /II11
I
I I ---10 11
--- \ ------ ------ \\ ''-- �` ` `"\\���� /ice / / t Ilt 1 \ `- \-==_=_=_ _r
�i _ _ _ �_'-�=-----__
27
- i
/ I 1\ / / ` _ 1 \ \/ -``-- \ ♦ \�\ \\ \ --\\ \-'' -----^____----?-----------_ - �G+---G+c�r=-_rc_ w.�_- `\ IIII / / J '
Iff
-\\ 1 ,---------- �' `. I 1 ---- \1 \ \`- � \\ \\ \`— ------ _--- __ ��_-- pIKE ��_�:"`__ ___—��__-- _ �7___ \� IIII i IIIII / ' / EMERGENCY SP
\ J �) " -\ \ `\ 11�- �_ i �: I - ==__ NORTH _ _MR
____�_ ='=_ ; \\\� III I III I / ,(1,
// I
0 6 \ - 1 1 \ __ ) i _ -all -_���=_a====________==�_=ae___�_; er__ _ _-___--- ___- �\\1 1► I I IIII / /
L/ t 1 \ I \------- ` ®__�.�-_ -- -' _:saa �= _- - IIII II Is .=sc• ---- �+s��C s ` a `�111 ill�l l'1 ,111) ) /
/ ---- I l i - - - ------- _.w=sll II III �__�_=�� --� i l� IIII II IIII I\\\ //. \\ �'----\ /,'i' __ -�-= _: i A=- � I II II IIIII /r ,---/1 \\1 r t'1 /��//gall II II II II I II I I I/ t -� `_ /- \ _ - I II II - --/ - l / / � Ill III I I (IIII I l I\ \ / \ \ \ / /// ,,�-_ _gi-I _ �O=--.� �- �,-' `ll III II IIII IIIj1_. / / I / ,/I III II III I I, I PERMITTED SF
/ \_r- \ 1 -\ \ / I I / /-�--- ,- I I-- // r- / / \ I I I I I I III III I 111 -/' /� / / / / / / / I I I
I \ I ,'' \ \ I ,\ I I // ,^ ""y / / /' / r� I I I I I I I , / / , I I I
! 10 II ! / \ ' _ J /' / I (I I I III II II IIIII / / /i // IIII IIII III III I III I
I \_ I \ \ -/' \ I / I 1 I III
I / - / / / //J , /I / / \ I I I I I IIII I1 I - // / I I
I I ,7-- / I I / // / \I IIII III II 1f� / / / / / , / IIII III III III I f I
! \ / I I I I I, \ / / / / I I I� II I / / / I / IIII I IIII I I III 1 I / Ir /// / \ I I I I I I I I / / / I I I I I I I I
1 \ / I I \ / / / / / I I II I II II II II I / I // / err /!/ 1�IIIIdII111ilIII I I 1
I \ \\ -_\ \ -- \ , / 1 I I / , /// / I II I II IIII II I ' / / / / II
/ / / \ `11 111111111 111 I III \ / r
% I I III / / / COAL YARD SUMP I I
`` I ` `---' -' \ / ' ) QI� /' / /// / / / \ m II II III h I 11 l , / I l f r I ' I I 11 I
\ f --_-- '' (dE p /I / / \ \ it), /ri1 �I \\`�l\>e\ / / f I r / I \ t DISCHARGE 11 I III
`\\ 1\ / )---------_—�' j I I , / O / I / pp / / ,_ \ ��l I. ii' \\\�\ \\`\ / l / f I / / / , \\ \ / (ABANDONED) I I I
\ `�\ ` \\ \`--- I I/' — _ — --%', / / � I I 1 1 O I� � \ / � ", flit / \\ \\l \� \ I i / I f I I / i /� I I
\ I / / ,-'/// ,- r=- / /►► / �_ IIII 1 I II I I \N/ / I I I
\ \ / %/ TL 1 A482 I/ // 1 1 1 1 1/ l \ f / /1 i i I h 1 i i 1
/ 1 1 1 / / l I I I I 11 I I
/'/ l / l l IY I III I I
\ `---- ' / / / i / / // /� - (100kV) / / / /, / / \. \IIIII II� f l� I I ; / / / % I I 1 / ;� / I' III I I I I III I I 1 111 I I I I
/ / �.f,7
! / II I III II 1 1
\\ I'll I / /, I' , / ,--- / / /// / ( 1 1/ I111, I / ICI II 1 I III I
\ -I/// ,, , / / /-� / /// / / II �111�=� 1 ®% , I II /n IIII I II I I IIIII III
O / // // i , /'' // / II _-- I 1 // / I/ 1 Ij111II III II II I III I / ,r0 / // / / / // / , / / // / I IIIII 1 I �/ 1 I / - // I I
} \ --` 1 � / /, / // �'` / r ,- , / - vv 1 .`-��_ �/�If/I / � nd I 1 )IIIIIII III IIII I I
\ l 1 / /',I,/ I,' /', _1I /- , , - ' /' __,\ 1\��� -`_ �Ij l /''/ / I )�vFC� I lI j III 111 III 1 I I I I
\ ) I. , l I I / // / , / / / , I / I , / / / \ ./I'\ ; � - -. -, I / / / 111 1111 11 11 I I I III I I
1/ /' /' /I / �J i \ ` l ' / I % / % % I, \ - ----_, / IIy // 1 I III 1 III I 111 I 1 I I 1
II J / / / / / l \ /// l _ _r- �-� ti lI / / II jlll I I I I III I I I
I \ / \ / / ' % I / I / //// % / I/ �'\/' I/ _,-'- /r f 111 1 l \ II I I I !III
/
1
-'� I
J
I
' I 1 1 I / ' /---- V , / i, iq \ i I
/ o / / .' ' I / / / I I / / / / / / / / / / r I I 101 \\ 1yj1 II 11 III 1I1 li 1 III
,' , -' ` / r / j \) . /' /' /' J /' �. / 11 1111 I IIIIIII I IIII I I I I
/ / 1 I i ' I\ \ \ / / , % % / ' -_// / I Ii i ( �1i II II it II II I I I I I
/ - Ir /% ' I I I\ I I ♦ \\\ 1 \ I ' , / '/ r I / I I V1 1\I\i\ \ I"I1 III III IIII 1 I I r
/ \ // // /, , // / 1110 1 I I I I III I IIIII { 1 I I
/ - , I / 1 \ \ / 1 / / / / / / / / I \\ \ 1y11 I I I III I I I I
/ I 1 ` , / / • / / / ---
"- --•' / / / / �\\\\\�\\ I111'I' (' i III " I III I
LI I / / / I \ l I / , // I/- --� / // \�\ \\ I II I I III I I I I I
' / ,/ ,''- I l I' / I _-/,O/ / / ///' / /' ,' �,�- I^, / / / \\\\\ \ I I II II II IIII I I I I I I
\ / I / 1 / / / / / ,/J-/--. / / I \? t \\\��+/�III III III III II I I III 1 I 1 I I
\ / / / / �,' _- f r / \�\ /II I I II I III 1 I 11
o - , _ , - CO / / / / , / / I I \ I II I I II I I I
/ / / f ,' -J � / / I I I f / / / / /' / ,/ I I \�\ IIII III III111111111 IIII I I I I
\ - _ / / / / --- ,, / r I I / / / / , I l 11 II I I II 11I I III I
/ , - _r' _,'' �, I / / / 1• / \ ++ I I I I IIII , I
/ \ - / / I- ,' r -- / I I I �, I I / / / I // , , l \ 1 111 III III 11 11 I I I III I 1 I 1 I I I I
\ - / \ \ \- --- / / 1 'O I I I I 1 / .'''---__-/ / \ % ,- --` �l \III II II III I I I III I I I I I I I I I
/ /-` / \ \ 1 r 1 I I / / ` , II I I I III I I I
\ - �_`. \ l / \ \ 1 1 I I I , \ I , ,'--\`\, III 11 111 III 1 I I I 1
- ► I I / \ , I I II III 1
--- / , ___,r \ 1 \\ \II III IIII I I I I I I If
` /,- 0 '' 11 O ��-��� �\ 1 \\ `\ 1\ \\ \\ I\ 1 1 11 O % / , r - \; N I\ \ 1 j \\\\V I III I I III I I I Ili 1 I I) I I I I
/ � -__ I l \ I I I I II I I I
Q -�-'------ - \ -- . \\ \ \ \ \ , , , / / / , ; �- , \ \ I / V II I I I IIIII I 1 I I I III
/ / ,__ - - \ --- ------ \ \ \ \ \ \ I - \\I III III I I
/ / o --- _- -----� -- -7- - \ - \ \ \ \ \ \ \ I / / / f O�'�\ 1\! \� 1 I I ,/ I__,-- \\ II II II II I III I III III Il
0 o -_\--'------- \\ \\ �\ -\` -_- \\ \-\ \ \ \\ \ \ \ \\ l / / / f aj \\ 1\ \� ``\ 1 / /�\ I I / - ♦III II IIII I III I I Il
fl _---_--- \ \ - \ \ \ \ \ \ \ \ \ / -\ /III 111 I I I
0 0 \ \-- \ \ \ \ \ ♦ \ \ \ / / \`/\ / / I I / \/ J I I I I I III I
I ) \\ ----- - \ --\ \ \ \ \-\ . \\ ; 1\ \ - \ \ \ ` \ ` II \ \ �\ 2n '� '/ \ 1 III II II IIII I I I
II 0 -4 0 \ ---=_ \I\) \\ \- \ \\ \ \\ \ - \- �\ `\ \\ `\ `\ \\ / ll 1 1 \\_� - _ i I I \\ r - 11 I II' I I I I I III I IIIII I I I
/ / ------ _ I \ \ \ ` \ \\ ` \ \ - \\ \ \ \ \ ` \ \ \ \ \ \\ ,-i=- % 1 \ I- \ \l ' / II I I III I I IIIII III I
/ \_ --- I \ - -♦ \ \ \ \ \ \ \ \ \ - \ \\ ) I I 11 I 11 II
\ - I \ \ \ \ \ \` I I I 1 I
0 - ` - ` II \ \ \ \ \ \\\ \ \\\� \\ \ \ \\ \ \ \\ \ ` \\ \\ ---- \ I I I I
1 / _ - \ \ \ \ \\ `\ 1 1 `\ \ \ / I i ill i IIII I I I
- \ 1 \ \ \ \ - - \\ \ \ \ \ \ \ \ \ ) -. I I I 1
4 LLJ -\ 11 \ \ \ \ \\ \ \_ \ \ \ \\ \\ \\ \\ \ \ \ -\ 1 \\\ r �I III I III III 1 I I I 1 1 I
1 , ❑ - \\ ) 11 \ \ \ \\ \\ \ \ . 1 \\ \ \\\\ \ \ \\ \ � \ \ \ \ \ \ ) /'^ \ \ \\\ )+ /--� 1 Ill II IIII 1 I 1 I I I
I I \ I I I `\ ` \\ \ 1 \ ' \1 \\ \ \ \\ \ 1 I / \ I I f/_ \ I I I I I I I
/ - - I \ \ - \ 1 1 \ \ \ \ \ \ \ \ \ \ I / / / \ \ Igllr/� , IIIII ll III 111 I I 1 I I I I LAKE WYLIE/
1 ' - \ ` \ \\�; \ \ \\ \\\\ \\ \1 I I / / / ,\1\\\ \\\ \\ \ \\ \ \\ \\ 1 I I r /,------ `\ I I \1�\ IIIf ` \ 1 11 II II I IIIII IIIIIII I
J 0 - \ N. \ \\\ \ \\ \\\I \\ I J r / / ,/ : / 1 \\\\ ` \I \\ \ \ \ I I I I I I I I /,--,- \, \ 1 \\M\\,\I)1 \\I\ III III II I, Ill I I I I I 1 I CATAWBA RIVER
/ \ \ \ \\ \ \\ t / //,,' �j_- ,/ / I I I \ 1 I l l I I 1 I 11 \ I r \ \ I \ I Mllul1 r-\\\IIIIIII I Ill 1 I I III I NORMAL W.S.E.
�( - \\ \ \ \ \\ \ \ \ \ \ 1 i / �'j''--' // '' / I I I I I 1 I ' I I I I I \ ) ,, ' I �I IIII i \ I IIIII III I 1 I I I
\ \ \ \ \ / / / / f I I , / \ \ \ I I I I I I 565.7 FT.
/ - 1 '- - -� \ \\ \ \ \ 1 1I / / / /. / /' /' / I / l I ' \ / / \ \ l tl I I III I11 I II I III I 1 I I 1 I
�/ / / I I / l ( IIII I
o- 1 / / - \ \\ \ 1 \\ \\ \I I \ \ \ / /�I"/ / / // // I I I I I I / I \\ \ ( t \ \ I Illf IIII lJlllljll I Ill I I I I I f
W I I //I / , , / I / / / / I ) I / / I \ \ I I \ \ \ \ \ IIIIIII J < Illjll I� III I I I (11
/ \ 1 Ili I / / �_/ e // , I / / I I / / \ \ 1 ill I \ \ t \ ) I I /I l� -1 I I I I I IIIII III 1 1 I
I I ' / /-- - \ \ - I O . l I I CHEMICAL - / r / / / \ I \ 1 \ I f Ill \I IIIII I III 1 I I I
I - \ / /// �' I / i % / // / I i / I I 11 1 1 \ \\ I 1 L I I I .. I 1 I
1 I l 1 If ` \ \\\ `\- -\\ I \ 11f/, BUILDING /' / / I 1 I 1 1 \ I11111 II III I' I I I I
I I I I I I f \ \\ - - \ \\ I /gii�f//, / I/ \I II / / .- //'/ r , / I I I \ I11111 (IIIII ^ I I I I
I I I I l �/ I /' -`, 1 \ `\ -- ` _' \ I \ 0I I /�/j/Al ,'- '/ / ) ! / / / I /' / , 11 I / / / , // 1 1 I I I \ I I 111I I I IIF'I - 00 I 1 I I I I
/ / / / 1 1 1 \ II II11 II III I L11 I 1 I 1
\ I I I I \ I \ \ -\ / \ ) / I I / /// //// / _ /--'-`-----''� / / / / / / / / / / / ,/ / / I I 1 I 1 \ \ I /1 Ilk II III{ p ' I 1 I I I
I I \ \ ( r'--\ \ \ , r // / / / / / / / / / / / / ' I III \ I, 1 I I / // // \ I I I O I I 1 I I I I
I I /-� \ \ \ / I // / /
\ I I I 1 1 \ \ \( �, \ \ \ - �// , I 1 / /// % /'--_-- - ----- - / / / /' / % ''-' //'/ -'/ /' I III /^\ 1 I 1 I j / //// I,-�'ll 1I ~ ~ I
\ ` ! // /- , \ \ \ \ / I I If 1 I �// '/ /� �'� -/' / / /' / / /' / I / / IIII I )IIII \
(�' / f / _,IIII I 1 1 i
i I I 1 I \ \ \ _ ___-- W W UI I / / / - / / - - I I 1 . . I //// I �I to <
\ O O I I I I /Ill �. // I /�- -- I/'' 1 ,// , ,' // l I/ 1 I \\ 1 \ \ 1 1 r f lbr /'' 1 w Q I I
I \ I ItIf \\\ \ \ \ CL.I i ' II/ l / / / / ,' / I 1 l l I \ \ IIII) , II I� U I
1 11 I1 \` /, -� \ \\ ` \ O - - 1 / I / \ , �' I / / / _ / / / 1 I \ l \ \ 1 IIII '_ IIIII I 1 I
I I 1 / // / \ \\ \ \\ r I I I 1 // I / / / / / / I / /, , / /- �/ I \ \ I I I \�/ IIIII I
I I 1 I 1 1 I III //� \ \\\\ I 1 -\\ I I I I /I// �, -I ,j /-_- \\-�/ / , //,/ l / // ,/ ,' / ��-- / / I I \ I \L \1111111 / III IIIII , I 11,11
1I I
I 1 I // - / -- , / / , // / I 1 .\ I IIIIIII III I I I I
I 1 1 I f IIIII \\\ \I— 1 \ \ \----_ /1),
I I1 /III''"/�- % /' ` /' / / r / / / / / , / I 1 \\ I ° I I�I I I
/ / 1 I III\\ I I
, / / / / / i ,' /// 1 III III III I II
/ / ,, /' - / / 1 ` / \ ll 1 I 1 L I I
1 I 1 l I I \IIII \ // I / / / /I r / -`-- --' / '/ / r l / / // , i -_/ , / I \ I , -� Ill I \�, \\\- IIIIIII :it
I l I I 11�
\ I I 1 \ 1 f Il ,-\ \ \ 1\\\ ✓ \ /''/ lI �I'/�� / ' /' lI' I ''/ '''/, ' -y 1 \-' II I`- 1I�II 11I I 1 11I1
\I / I I / / / / 1 IIII III
// / / / \ // / / / 1
\ � / 0 ► / \I \ \\\\ ) _ i � / / % % / / // // /' ' / � \ I I I I I I I III I I I
I , -/ 1 , 11111111 II ICI I I
I1 - /� I I ' ,/ , / / / / �' , 1 I I I 1
\ 1 1 1 I I A II I 1 1 11 1 I \ \ / , I A / �--/ ,' / ,/ / / // / / / II ,' // ,/ 1 \ III 1 IIIII 11 II II I1 III I
\ 1 11 I l' 11 I\\ \ 1 I \ / // / l I / - _/ /%/ , % 1 / / , /lam , 1 r/ � - ` \`'`�-\\ III I Ilk'( \\___ \ IIIIIII I1I I I 1 I
1 1 I I I 1 I I I 1 IIII \ I I \ I I/ l/l A / / ------ / /' /' / / l / I, / , , , / \ IIIl I f
' /' ' / I/d _/ I ' /' _,' / ' /' , / / i I , ,' ,' r' j /` \ \ I IIII II �`_ _� III IIII 11 III I I 1
\ 1 1 1 I I /I / 1 \ \I\ \ _ / / / / l l A I \ / ,_- , / / / / , , / -- \ l I I
I f ` \ / / / / / l__/ , - / / , / I 1 ) \ _ 1 fll IIIII fill' I III
/ � , / - / / / / I / , / \ IIII t 1 I I
1 1 I \ 1\\\ \\' , ./ / /1/- / , I / / / , / I)I ,\ S / �t I I�I I III I Il
\ I I I I ) 1 1 \\ \ `\ \\� \ \\ ' /' Z --- / /Id I /� I /--" i /' i / I % I /' // I 1 1 �\ 8 \ / III- III III II I� IIIII I I I
I ) I / \ \ \\ \ \ `-- / \ I - - ' ' / / / / / ' ,'-' II ` �- Ov \ i ll III I III I I I , Q
1 1 1 1 1 I ) / \ \ \ \ \\ \--' `\- //I I I/ l / ',' - -, i ' , % / / / 11�1 l 0\\\\\\\ - ) ��/� II I \IIIII I III l I I 1 1 \ \ \
\ l \ \ I / , / / , / /' 1 \ \ - / IIII\ ._1�1III 11 l I I \
I I I I I f I / \` \ \ \\\\ / \ / � , / // / , , /- / r / / / / > \ \ 1 1 \1 _ _ I \
,' / d / I / /' / / / / , \ \ \ c \__,,�-JII IIIIIII III I I I I \ O \
I j 1 / 1 I \ :� \\`�\� ��--��^\\ \ - //���� % �w /dj l / / /' ,' ,/ / ,' / -/' ,' / / / / j ,' -�/ i I % ( \`\ `\\ ` \l \��� �' ylll 11 ll I I I I I I IIII III I YZ1 \\\VD
' I I I I 1 I ,�.. 11 1\ �� /,/ /l1/ / / / ,♦ /,- �/,
,---- / �/ --/ /' / / I / / /- �/ / '`a \\�\\\ \\ -_- --III Il I1 I \ (-
/ / I / I I \ TL 5N5 (500kV) 1 \ - 640_-_ _ ;_� - /// / / , / , / / v 1 I \ l I'/..` \ \� _. IIII II II Ilgll I l I I I 1 I I I \ \1
1 I \ ---- _--- -\ = `i _----'%/i / ,-' / , /, / _, �, /,' / / / / ------ \\ \\ ` �\ \ `-__ III 11 II1111 I IIIII t l) 1 \/ \
// / I / f \ \ \ ``----- ------ --- - `- J '%' ,�O / / / ,/ , �, / , / / f / / / /' '_� --_- - / II \ II IIIIIhIIII III I I I II 1
l I I I f I 1 t � 1 �\ - 1 ` --_- ---- - - - ; �// , / / / / , , ,- ,, ,, / / / / / , - \ \\ - ` \ ` �__/^1j11 11 I I -- 7K 1 I 1 \
! 1 / l \ \- -_\ I - _ - - ,s i %% - - / /; _/ / / / / / / , / / ' / / _/ /�___ �� �- ,1 \ \ `�-\ \� \ \ III I1 1I1 11 1 fill' ''III I I f I \ JURISDICTIC
/ / I \ \ \ \ \ -- - ` ` , /_�'-- /�� ---- / ---- / /� , / / , / / /- _ \ \ \ \-� \ \` \ ---- IIII I I I
/ l l I I I l \ IN \\ ,y 1 - /--'---- -- - - , /' _ /// / -\_, / ,- / _, / / , / / / , I-,,------ ---------------z \ \\ /. - - \ \\` �: I I 1 I I I I I I 1 1 I I I I I I /
/ / . I / I I, / \ \ 1- \\ l I \ \ `---__ - _ - - ! // ,- / �__' / I/ / / ' ' ' / //_- \ ll \ - ----- llll II II I I 1 I I - 1
/ / I l / / \ / \- `\ 1 I / / _ _ �� ` - / / '/ / i ' _ I _ / / r' r' i / ,/�� 1 /-''/- I f - \ \ --- I I I I I I III I III I I l ` `- ' / \
/ \ _! -- // / / / ,- // / / // / / / ,'` �_>- l \1\\� \ \ \ -___- I III I Il I IIIII III I I / 1
/ _/ \) l I --\ \ \I - j \ �• _ `\ / , /,, , /� -- , , ,/ / / ,- ,' /' ' i / / / ,/, / _-� --� \ \ �\ \ \ \ IIII I
l _ �_ l \ 1 \ b'3 �� i �_ �\ I / /�j / , \ �/ i // I / , i / -,' r / ,/ /r/ i i -off I \\\ \ \ - \ I�I 11 II III II I IIIII I I l
/ / / //� / -\ \111\\\\ `\ --- - _', , `-- i //�-- �� , 1 ( / ///j j ,' /_- `__/ /i/// /,- 1 I / /' ,/ / /� _/1 i �/' /r//i'/ ,/ /i i , r-_,- \`+` „\\ \- , 1j11111j I I I III I I
/ / // / / . l \ \ \ 1 / I - \ -, / / ' // /'- / - 1 - \ \\\\ _ _ \ 1 I I I IIIIIII III I I
/ / I / / \ \\ --_ _ / \ I/~ \ \ f )11 I / / / _ \ , ,/ / l / / / , ,- _/ _f-_ , , /,/ /,/- \ - \ �' I I �`I 11 11 II IIIjjI I I IIII I III III I
I / , I ,)// _ l / / \-\\\\�\--\ --_ / I O LI-I II -- \ 1 I '/ // / I \`---I, ,'' _,.1 1 ,1 // // ,' / ' -_-- - /'/'/I ,'',/,/',' ,- \_,�1 ,^ \ I 1 IIIII 11 I Ilhll I III I III I I I I
I / / / I/III < l I I `\`::�� `=-- 1 ---_-` / r I 1 1 / / , / / _ ` _-- / 1 r / /' _ ,' / ______ = - /' , , . , / - \ - I l I 11 111 1 I I I
1 IIIr 1 . _ _ _ r / , / ,
/ I \ \ -\ r-- 1 Il\b C:°��c',\ / / /'- - - ,� / 1 , �' _ __ , , ,' / 0 , /- ^il I �111111 III III II I III I I I III I
1 / / , / I ItlI ) f // - -\\�� -762 -'� -//, 1 I \\` \ �\\\\\ 1 / / /'/ / -_'V / /i1- ' , ' /„ � /, I- / , \ / / I I Il
/ \ f / - /' J -, �, , , / _ (\ -/� O O III 11 I I I 1 III I
1 / / / / / I 1 / / / < `\ ``.: _ 0 - _ �' �� II II \\ \( \\ // I I I , / , ,� /,- , / / � --�-- j / // , /'I -- ''/ �- 5 I I I I II 1 II II I IIIII I I 1 I
1 \ ` .2=-__ --� `--' \ ) / /_ ' / ��= -_ ' , / r' ,'' Ill II Ill IIIIIII I I III I I 1 I
/ / / 1 I�l ___/ I l `\ --�'/' \ `\ _-- /I I )\\ \ \ // I I / / / / --',\ ,- /' //' ' ' ✓/, ��_,'-- ,�' ' /, /'�� ,'� % -----\ l 1 r r' CO � I 1111 111 11 IIhII I III I III I I 1
- s - - % r , / c____ _ , \ 1 �,�IIIII II I I I I III
/ / I 1 / / 1 /' - -_ -_�:\ \--''� \ -�/ ll \ / 1 / / , / / �� ' `-�' /, / _,/ ,- /'i- --__- l / / _ / ,\ I I I 11 I IIIII I� IIII I I
/ / , I'I / I I-.__ %� - ll \ ' I I , // / /,// , / __ ,�� \ / I I r/,\\ \ I O IIIIIII III I I
/ I I i - - -\\--�" \\\ \_ / / // _ \1 - - / / / / / /i, � \ / , / - - -. /// / - / . --- _ I /�__== /,� ,- \ I \ \ I I 111 I l 1
/ / I / / 1 --- I- / / I -- \�-' \ / / /// / , ,/' / ,- �� �� / - �- \ \- 11II I a0I II III II I 11I I I I III I
/ / \ -,/ \ \\ _ / -/ / /��-\` � / // , ,/r' ///� , I \ /ii, -�-�_ /i,/= - - \ I I IIII I I I
/, I l --1 / TL 2A10 230kV ` `---_--__-__, _ \ \ / / ' / /4/i \\\\ ` \ / /,,; / / /,,'/' _ I /l l / -' ��� \ -\\/,'/ ` _ , , •; __ _ • \ \ - 11 I I l lryl l I III I I I Ill 1
/ I' / // _ I I \ / --- A- -\ \_ / /�\\ \ , / / / / \\ \ , / // '/ �' �`' ! ll�/ / ✓ _ \ n / _ \E/ -��� \ \\ - `� I I I I�jl �11'I II I I I 1 I
/ ♦ - ( ) '\-� - _-LtJ / ,, \\ \_ , /, / / \ \ - \�/ , ,�/i / /, /,' ' _ - / -=s'^� __ - I I I I I I III I I I I I
/ / / / [ \ -\\ \ --- \\ --- ., / / r II \ \\\\ , \ /, ,,, �, /,,'/ ,' / / �� \_/ , � _� - r� - __ -- \-\� - \ I I 11 I I I I I III I I I I I I I
/ ' / /'/ / I / % // I_- --- \ `-\,- - `-„_-- r - -�-- \--�',i/ / / , / \ ---\ \ ,ii' , /,/,i// , l //� 1 / ---- `S% / %'/��' _---- \� \ \ �\\\\ \ \ I ) I�IIIIIIOIII IIIII I IIIII I IIII I'
/ / / / /^ I // - - \ \ \ . - \ \ � \ r- - _ _,/ / , /r/� 1 1- \\\ \� - �iri //,/i// _, ,-- / / �- /- --_ // j , �i� �� \ \\\\ \te a- I I III II I I IIII III I I
\\ �-
/ / / / \ / /� / // _- -`\ \ \ `\ `- - \ .- \ / . _ / �. /.�_. ,i = _ ___ \ `�`�-.R 1 f G IIOII1111 I IIII I I I LAKE WYLIE
r I . \ \ \ --� _ - \ 1 \ 1 - �, =i ,�,ii / -'--- /%' ��� - �i��/'' - ---- '-_ - ----\ \ \\-\\\�\_� I (IIIIIII fI II I III I I
/ / / / / /� / \` f \ '` \ \\\`- `0,-_-� , \` \ t\a\1 1 / :� - \� --'� _, , TL 1A606 (100kV) =-_ /i" / /% \__: I/ , /�i s. --' '�// //'� =- --- - `: \ -`\ . \a. / �II III I 1 I I I Ill
1
\-` `�__ IIII II. I I 100-YEAR FLO
/' \ \ - - /i r /-c�-___ _, _ - _�/ / / \ -/ / , y-� -_ ./ �� ,�� _ - \ \ \ �` \`�\ `--' I 1111 II , I I I I I 1 I I I I
/ / / I ^- I % \ \ `--`� �__ - `\`\\` ` IVII IY \ - _ / / - ^ _/ �I �11 t`I _`^ -_/\� / /�p�,�� �< �� �O/y� �� , -- `\\\ \ ` \``` -, �-'�_ - J IIIII I IIN11 I III I I I I I I
r!''1 / I 1_ ,_ \ \� . -__ -_ . - `\-`- /Ml I� \ �- ----- -' ' '%=- - �� 1 / / �// �� - -_ �%'% �/ ----' - l _� z JI I II II I I I I III ELEVATION: 5
/ / //,// / - \ \ - - - -� `- -- /� MY \ I- — ,--- `\—��\ ,' //'' / --��/ `--'' /� -\ 1 /, / / -- $= -- /�i �,�------ ��_ I Illll I I I cf� I I I IIll
1 / /,- % I , - �� \\\\ \ `---- -`. `\� -- - = /) \\� -=a -� ` _ " , / /'/ --- 1-�/' �\ \\\ t /�1 --_ \ - 59�%, - -- __-_ PERMITTED SPILLWAY �I I III IiOI� I I I I I 1
I / ♦ / / / `� \�\ `�- 620- --_ ` ` ` - \ --�_/ \ -_ `__-' --_-�, _, , / / r / '\/ , �\ 11� /// %I /' ---! „ i _ _ - _ - �� �\ - III II IIIMI IIIII III I I I
1 ) Ir, /' -,, / _ -,\ \� , ---_ - \ \ -�- - -� - - `-_ --__ '�-' /' 1 - % \ \) 1 / / i ___-_- -_'-�„ / ,--i/= _----'-- \ \ \\` - ��_ =w = I III I III I I / I- - ... . _�� _ / ) ,-' %1 I I // I I _ =JIIIll
'' ' \\` \ \ --� `` �\\ - - - . , / _, , -_� \ \W // /I I / r ---_ ' / / ,,, _ �� \\� - - II II I O 1 I Ill
I I I I
II / I r- ^\ I //jii ^-\\-_ `- 6 _�$��` \� `=-��------------- - \` - �-----t�` \ , -_�_-' /' J r� _/ _ --. ;, %�''���``\\\II \I /�// / 1 ` / _ ,- j Q // �,ii'/'- �� ,-' \-�`=___---_-- -�--� 1 II II�II� III I III 1I M
I / I --- \� `3Q -_______ __ _ __ _ ` - - - \\\ \ - r -\�-�� ____ /� ,may jl r \ `\ /-----_- - O / . / ---= ��_` _- _ -__- = \ -- III I CO I 1 1 1 1 \'
/ / 'iii - -_ - �_ - �_ _ - --- ` _ - \ \/-� I I - -- -- , -� l 1 1 / /r, �- _ �--- _ --- = \\ ` --- IIII I
/ I I //i ' - - �- _ - �_ --- --- - - \\ \ - - - \ �\� \ I , r I _-_ "/ %i - \ 111 I 1 \ \ \\ / / \0 / //i ' _/ ,i --- - _ \ \\ \ ` \\` I I I I I I I iI `A,
III (�'/ /i' T�.���- -- �__ \\ �� - �� -� �\ '� \ \�\\\\\ 1 1 \ \ ,' `- %H� =_=---'%�'t- /i ` ` 1\ \� 1 \\\ ) �\\ / / �,' ' / r/i ,' / / /'�/ ___ - \ \�\- III I 11 I 1 MJIY
I l I I / , ' ��- -- -\�--� ___ ` \ - `\�\\ \1\\II 1 -� \ l ` G / , __ -- ��!4,- �'/ji'r' \ 11 )1 II l 11 \lj / �iJ / / ,'------ /, �iii /' /' , / --- �` `� \ I III III I III I -.\ \
1 I 1 I) / / N. i \ - �.�/ - -- \ - ---- - _ - \ \`� 1- \ \\\ IIIII \\ \ \ -//g / ,--___ --_-%„ r 11 \ ` r I / , - _ -
- \ - \ 1 1 / ,'i/ / \ )III II \ , III / /r/� / �, ,�/�/ / r/ 4/ e, _, �- -� - -\\\ \ \ \ \ I I I III 1 I I I \ o.
I / / / / - 'r'~ " -- - -\ \ \\ \ �� \ \ \\- \�\l`= ----- - /� / ____�, / , / / / I \ I I \ i /��/ / �� / , , i !4, // / - '` �__ \�,�\\\\ \ 1\ l .�I �I 111 1 I 1-1) "-` `\ JURISDICTION
1 I 11' / `--/ \----_\ \ -- \ \ \ - __ 1 1 !, � / 1 �, ,'' / / / / ---__--__ \ \ / // /l l l l l I
/ / / / I t \ ♦ 7�= \ \ \�` --` \ \\\\� `\`� --'/ �i� / / / , IIII) () _ i��r /// ' / /�- ,'' ,i' / / / a--_ \ 1 1 - /
I I ) / / \ \ \ -- - - \ --_ - \ '/i - - --- J / / / \ III \ 1 1 1/11-_----� , , ', / --- - \ \- - / / l 111 111 \
/ / � -\ \ - I \ / - -�\ _l I / / ` 1 / -- \`� - ��� ry' _ - -� -` / I I 1 r f Ill, / / , \ /%/r/ / II \—\_===1`y—� V%`, — / / I II 1; \\\ / _ __ , , CHEMICAL BUILDING / -\ \ �� / I
I \ // I I J 1 \ \\`�__' 1 -�--`--�__--r '/ /ff)I 1 \\lam/// �l/// / �, =_ �, �, / \ \\ \ `yY r /
TO BE REMOVED _\_ \__-=s•�' ///// 11 1 \ \
I / \ \ - / -__--
'- /� \\--_----- ---� -\ - \ / rJll III ` / // / _'--__' ,,, / / / / , 1�-� ,/,
\ / ///1 I -,' -\- .'_ \ / / `-___- --'- w+� - ` `--- ' //! II 1 i /Ill i % /'�-_ /i/ ,�i---- , i i / / ,,/ _ _
\ 111 / _ _ / III / �' /// i I \
\ - I , \ \ ` -__ =�%'_' �+ ` `\ / I I \IIIII IIIII ' /i // , � f'G,% - ,�/ , �_.�" r' / I / /(fl�--_-_-_--------_' �'/' / / ' I \ \ \
\ \ \ I / / I Ia l > - - -/ / I I //r/ /i / 1 / O // I \ \
\ �\ I ) / \ _ \ -\ \o \..-- - //- ► I 1 f I III Ir ////// / , ,- , -// / / l / l /, ------ "' // / \ \
I I I/ 1-" - j i /------'' \\
/ f ^`\_/ I ---` - \ - - -\ \- `-`"� -\♦ 1 I 1 11 II IIII / / -- /' , / /- // //'/ `/ /,
1 ---- \ --' \ \ - `\-z\\ - I ) 1 IIII /III \ll' / / , , /- , , I / T - -,,/ \ \ \ i
�1 -
I I ) 1) / _-_ \__ _ - \ \ \_--_- -\ --_ \ I Nil IIII f III \ II / /' ' / / / ' / / / ( \ / _---, \ \
1 I I I / ��/' ,,---- --- - / ` -_ -___ -- -:� `\---- --- -�--- �� 1 \ I \ I I II)I I )II / // / / / / / / -, / \-\ ) _/ / - \ \ \�
1 / , - \ , I. - --- __ - -\ - -- ` I , I I\ / 1 J1/ / / / / / / , / l 1 ,- \ ) \ i
11 \ \ I -g / / / / / r / / I
I I ► \ 1 , � ,, -\ I"\ -`- 11 �} - / It , / -\ -, `\ �-fflw��-\ \ \ I 1 II �. " / / / I I' / / / / ,-' / // l 1 I , , -/ / / T \\
1 __-/ I \ `\ \ \--\,-\\ \\ 1 / Ill / 9' / / / / / / // / i I 1
1 \ \ / / , \ \ __-- -, -- / I I - - \-_ - \ \ \- \ \ I 1 I I Ill /i, / 1 / / , / / / // ,^' / / / / / / / \
6 \ -\ \/ / - I / / I
I \ \ - 650 / / ' I, \ `\ `\ ----' ' L 751 \ N \ \ \ \— \\\�) i \ t 1) i lf, 10 // �/ / // / / / / ' /�_ --'— �/ /��/ / ( / / / f I / \ \
0\ / _ _\___--- / \ \ \t I t / / / %� / / / / / \ \
\ \ / / W / / // /� / . _ \/11
\ \ - , / _o-_ --- _ \ \ \ \ \ \ IIIII /I I/1 �// / , /' / / �O , / , - -, / I I \ \ I
/ / \% \ 1 / I1► r I / / / / '' / / / / / EXISTING WTS PAD I
' / \ - --''' / r ` \ \ \ \ \ IIIII 11 1" // / / / / , / / ,%i /� \ ---'' / / `: \ _ , I I 11
1 \ ,' ,' // / \ \ I \ `\ \ \ \ IIIIIIIIII. //i // / -_/' / , , i , / / / C0 \ `-__ I /
` W W -Lu- - I I \ ` \ 1 I 1 111 I 1 % /' /i' ,' /% ' . , �'' 1
I I - ,' / / / / \ \ - O I `- \ \ \ \ \ IIIII 11 //ji'/ /' '' ✓/ , , f0 ��', I ' /' / \ t-- -\ I /' I /
l ` -- I, / / I \ � - g i 8 \ ) \ \ \ \ \ 1 1 111 I III I III) // / / / i' /'/� ----- -, ;�, /__ / / / l \,_--,, \ \ / I I
/ / / - \ I / ` \ \\ 1 11 I I /// / / / -�-7 / / - \ I I / /
I \ \`-'' // / l I -`- -- - i ' `- > `\ \ \ \ IIII II ,d/// ///, /,� j�� __- / / / \�-- \ ) ) I I
\ // 1 I / / I ,' `- \ \ 1 1 1 ll // // / / /,/ / // f I --' I / / �r ,/ ( \) ) / l I I
\ \ ,/ / l I ` I / I I -\ \ \I \ \ \ \ - /, ,II 1) I /,Rill I 1 \\ / I / / \__-' I / I C0 / / / / /
\ / / /// / / / I o I / /
/' / / /-------- 1 / / `- \ \ \ \ ! \� �� �i III / /%/ I I I I I I I I ) / / / I I-_-/,/i' / / / / I/I
/ ( I \ \ \ \ \ J/f I I11 / , / / r- , ,- -, , / 4111
\ - , - �L% <C/ <C/ \ 1 / -- \ \ \ \ -z---,/ 1 I IIII I I / / 0 - , / / / / \ ,' / / , / ,,'' I ,/` _ O r 1 / _ \ \ \ \ \ -'\ /,�I / I / IIII I I 6 / / / I / \ / /, , / I'/I / /
\ - \\ \ \ \ / / / /
\ - / r0 .) \ \ rJ \ \ , / / /// I I I % / / / I 6 \ I I / , �/ ,I /
^-_/' , � /' I / ' I I \ / `- \ \ \ `\ �--- j , /// /// I I ,/ , ,/ / / I 1 / 1 \ I / / , , / I
/ _ ,e \ I \ I -_f \ \ \ // / /, / / I / I / , ,/ \ \ I l ' I / I /
\ - I/ / - \ \\ I \ \\ \ \\ \\ /' / , / I l l I / \ \- ` / II / / / / , t /J /' i
\ \ " - / / \ 4C/ � 1 \ \ \ \\ ) t \\_I I_ , I I ., / I I,.-._ --- �/ / N. \ /` ,,
\ -, -__ � O O \ \ \ \\ \ C \ \- I ; 1\ I / ---- I I \ \\ I //
-\ \ \ \ \ / --- \ NN I / ,/ /I 1 \\ \\ I I -
\ \
1 I, / (" \.-V \----------- \\` \`\ s -_,/ \\ `\ \\ / / -/ \ -` I l
\ - - O -----_ � ---- ------------- \\ JURISDICTIONAL / -\ I a /i I 1\ ,/ / i \\ l
- I \ I N I / \ I -600- - 1 ) I \ 11
\ `/ / .'- -\ 4,/ O �x � ---_-------% I I STREAM / _ -`\ I 1 i / I' \) 1 % , _` -- )
II / `� \-\-\ N\ -x I f 1 // TRAILS I\ I\ ) \ a_-- -/ �'' ''' -
\ I/ \I ,,' \ -\ I I I \ 1\ I' _----- / `\ \ l 1 ' \\- \\---_- _-^' -% �-
\\11
I It '/ // \ - r-\ / II / 1 \\ // /' --- /' \ \ \I / I \ --- - -
\\ ,' . / v / o V / / \ \ - -,- / / I / 1 \ \ 11 ,----- ,'' - -- \ 1 / ,0 1 1 \ - - `\ \\ \` \\
/ y / / / \ \ / / // / I \\ \ \ I /-,-/
'- / , --_ --- \ / % /' \ \ \\ I \ I I
/ O l � I ` `- %\\ \I I / r -,'' /'i' ---`--- _\ I/ / ,/ \\ \ \ 1 \ II
/ / /// C I \\ -`- \ \ / /- -/ I I- --- -\ \ -- \ / I / _ \ I I I I
/ / rr , \ � \ \ \ \ I / / ,---- \ \ \ ', \ / / ,, \ 1 I I I / I
/ , / \ - \ \ \ \ \ I I , \ \ \ - \ I I \
/ i� /'% \\\ \�----- \--\ \ \\ \\ \\ \\ I 1 I / \ II I--__--N`\ \`� `\ `\ \`---' f `\ __ -`\ 1 I / / / /
+� /' ,'/ --\ ---- `\ \ \\ \\ \ \I I I \ \\ I _-\ \\\\ \\ \\ \\ I I1 \- '' -\ _ \ I 1 / I /
I -> /' r' ------ ---\ \\ \ \\ \ \\ I 1 I I ) I \ \\\ \\ \\ - I ill
\ \ I 1 / / /
I �,I I,/ _ --- \ \ \ \ \ \ \ 1 I I \ \\ ` \ \ \\ \\ \\ \\--/f I ) _` _-�.1 \ \I \\ \ I I II I /
I '' -�,'I �� ------ - _- \\\\\\ \\\ \ \ 11 I I ) ) \\ \\ \ \ 1 -------/ I ----' /I \I\I\ I 1 I I / /
- / \ \\ \ \ \ \ \ 1 \ t 1 \1 \ - - / I
`- \ \ \ \\ \ \ I 1 I \ \ r 11 I / \ -/ lI -` ` % 1 I I
- - - - \ \\\ \\\ \ \ \ \ \ I 1 I\\,, \ \ --__ - \ \ \ 1 t 1 I 1
\4­--�
E�~�� c \ \ \\\ \\ \ \ �, _ _ \ \ 1\\\\ \ \ \ \ I I
\ \\\\ \ I I \ I I-'- -11 - / \ /
\\\ \ 1 ---\ \\\ \���� \\\ \\ \-_ [J I� \� -\-\\\ _I L'-\t\ -~ \I 11 / / 1 I I \I 11 I �% j
yww4, \ \ , \ \ \ \\ , \ \ , . � . \ . \ 1\ \ , • — . . 1 I /, i -
INCHES 1 2 S (TENTHS i0 20 30
----630--
----630---
ALN I mv. B
LEGEND
ESTIMATED BOTTOM OF ASH MAJOR CONTOUR (10 FOOT)
ESTIMATED BOTTOM OF ASH MINOR CONTOUR (2 FOOT)
EXISTING MAJOR CONTOUR OUTSIDE OF ASH BASIN (10 FOOT)
EXISTING MINOR CONTOUR OUTSIDE OF ASH BASIN (2 FOOT)
DUKE ENERGY PROPERTY BOUNDARY
- — — — - APPROXIMATE LIMITS OF IMPOUNDED ASH
LL LIMITS OF EXISTING RAB LANDFILL LINER
ASH STORAGE BOUNDARY
• • — • • — LIMITS OF WATER
100-YR 100 YR FLOOD LINE
APPROXIMATE ASH BASIN WASTE BOUNDARY
HATCH LEGEND
WETLAND (SEE NOTE 4)
POTENTIAL HABITAT - SCHWEINITZ'S
SUNFLOWER (SEE NOTE 3)
NOTES
1. LIMITS OF IMPOUNDED ASH ARE APPROXIMATE.
D
r
2. REFER TO SHEET ALN_C999.001.012 FOR REFERENCES.
z
3. POTENTIAL HABITAT FOR THE SCHWEINITZ'S SUNFLOWER WAS IDENTIFIED BY AMEC'S
I
0
JUNE 24, 2015 NATURAL RESOURCES TECHNICAL REPORT. PRIOR TO LAND
DISTURBANCE, THE U.S. FISH AND WILDLIFE SERVICE MAY REQUIRE A BIOLOGICAL
SURVEY OF THESE AREAS.
4. POTENTIAL JURISDICTIONAL WATERS (STREAMS/WETLANDS) WERE IDENTIFIED BY
O
AMEC'S JUNE 24, 2015 NATURAL RESOURCES TECHNICAL REPORT AND SURVEYED BY
0
MCKIM & CREED IN FEBRUARY 2016. CONFIRMATION IS PENDING U.S. ARMY CORPS OF
ENGINEERS REVIEW.
O
N
5. WORK WITHIN THE 100-YEAR FLOODPLAIN ALONG THE SHORELINE OF THE CATAWBA
RIVER MAY REQUIRE PERMITTING.
0 200 400
600
NOT FOR CONSTRUCTION
GRAPHIC SCALE
(IN FEET)
TITLE
ESTIMATED BOTTOM OF ASH CONTOUR
�
MAP - ACTIVE ASH BASIN
�
ALLEN STEAM STATION
CCR SURFACE IMPOUNDMENT CLOSURE PLAN DRAWINGS -
CBE
GASTON COUNTY, NORTH CAROLINA
N.C. ENGINEERING LICENSE NO.
F-0342
FOR ISSUED FOR APPROVAL
SEAL
r
"DUKE
SCALE: ASSHOWN
DES:
ANR
DWG TYPE:.DWG
DFTR:
JAB
ENERGY®
JOB 3320
[DATE. 076 020
ENGR :
J DM
FILENAME: ALN C999,001,020 021 ESTIMATED BOTTOM OF ASH CONTOUR MAP,DWG
APPD:
JDM
DWG SIZE
DRAWING NO.
REVISION
ANSI
22.0"x34.0"
ALN_C999.001.021
B
9 10
1 1
0
W

ALN C999.001 .022
Fm►. B
\ ( ��_---��\ - \ ���\� _ \� ����-_ ` �� v -�`\` \ / \
/
/ // // / / / / /ice \ I / I (, / /ii' ♦� .'_� \ ) ) �` --� ��_ � � - � \\� \ \ � \
0
/ /// / / // / / / �i ♦ I \ \ —
�'//'/%' 'iii'/ / I /i' / /'�/---�- / / � ( f p • f �J \ \ \ \ / /--\ \ \ i \ ` \\ � 1 /I ..�"
//-' / /'/ ^ \ \ \ - -- \ \ \ \ ✓ I �� Q \ .ate' OCn
\ \\\\\ F \\OF ,' - �`•-_''/^ �` \\ \\ `^ \ \ \ j \\ \)\\\\\ \� IOEE �`o
XX
OE ,OF 1 \\ \1 Oc^ \ ,,✓\\IALLEN STEAM STATION` ' o
tit OE r\\ o\\\\)1\ \
0� OE
) 0� ( OE Q(L \ \ \ \\ \101
/-- I
/ E
\ / / \11 - _ _--__-_-_'__ ________ \/ / \ /f Q \ \ `\\ 1 /`\\ !f \ \\ ♦Ir,iJ \,J1 �JI Il/I I
\\\ Il I f \\ ✓` / I`_ /✓' '' /LLUI /��Q r/ Q Q 1�O \�� \\ \ I 1 '\/ �, / '//` _ ♦ \ \ II \
1_ /_ \ \ I / \ /
of �C \ \ ♦ 1 � l � I o
OE OE /'nC O /'-\' /V� / \\ /// �/ / i l i X- \ Q-��`!`- r \ • / `// 'L_"// '/ \1 `L_ \ r
_ OEOE
= BULKHEAD - TO %
E REMAIN r / / \ // _ 1 ,r it
OE , 1�� J /`� _ -_" �` ♦�� -�__ ^\v, ` ���' /` �\ .v// �/ r I'll
► 1 I \
O _-_ OE ,r -'� LiY ``+-- / '� _- _ _\/` `\\ \ \ \\ �,i/ \ `� Iilrl�'I ^\` / 1
:OE _ _ r� \ ' OE OE vL '�i O�` _"_\ \ `� /)/ ) \ r J �/ ` !^ \(_ /� 1/ �-� 1' I �' ,,\'(`
IQ
\ , oFW C OE J �/j1111
----_ \) `�/ 1 � -- ; QF -� RD _ �u_ '/' __ � � -- /r� / / \ _ � -r0�o l� i r \� �(i�/ j �1� ��/� l,\ I I j \��\ ) �IfI I
-,-----
WEIGH STATION I ! I \
\ - PLAN �� - I \ ) \ 1 r /
COAL YARD I /
` iil
'o ) i , l / f I
®1 /!I ' '/ / / T/\ �`b/I\ ryi _ _ / /// \ / _ / \`Ii ,/,,II 1il /IIII I ,l\ \n \ \\ \ �"�/' / // r/j I/\' -- rI �� / /I .. I I I I I , \I I I 1 I 1 _, /I i I 1 i• �I�O I. I II IIII I I1I/II I' /I /J, /,/ /-// ./! i //,, 0)i///fi1 \. \\\ \�\ l�- i / �`'\ \\ \i \\\\\\ + ' \/\\�I I \ \/ \\ \ /r �\_�°/��-,-\, ,\l /�/ f1/, i f , / I�II1ci/a //I
\/ ` ILL, �_,. J! I! ,�II iI l►n L7`�LINEDo /-------_
-_/ I i
\1\ \\)\ \�\\
0 \Fio HOLDING
wII \\ BASIN j�' f
vo
w w 01
OE E OE —OE, 0OE SH STORAGE Ii
E Iof REMOVE 24" CMP A
OEJ of OF OEI
WO O \
IiI1I /I
II I
I
II I1 I II I I 1 I"I l
It 00III \\ \ I11 II
1 11--1 '/ I
wW J I I ,
I • I 11 \\ \ \\\, \ \ /) 1 Til /f t I III
, it/ / / `� " = _ / o o i i i i IiiIII \ \\\ \\`Y\ ' - _/ L/ ��/ 1
I I /- T----- Van I I
/ ' J 1\I /lI 1� /\ \ / lla/ J 1 1 1! I I ,// /I II // 1IIJI II I, ,,1 I I' I / / / ,/ I I /lII/,1/ 1 �/f I/ / ll // � l l 1(1 / /// / r•// , t , // ♦\ I �/�_, ,// "/tlI , /I/ , .\ _I /' , / / \�I,11 / 1 1I �.\� I',, )\' /-r1 � ._♦r\r1\_RETIRED ASH OBASIN REMOVE SLUICE
O 1 PIPES (TYP.) IX\ ---__. 1---------
__(noun /WW / /
011IllIll
00/ NW. lollolm, -------
bi RETIRED =600__
REMOVE MANHOLEREMOVESLOPE
---------, W
/ AND 48 CMP O I I DRAINS -------- 625f o -`
°l
IIIII1
�OW / r� ( \ \ \\\ \
lO iI
\ o o l `I Ili iiI Iii111 ii I ; / (rirr ti �- \\\\\\)I III
1 \ I I I ) W/"/ I I I I I I I I I I\\/ 1 1 - `� \\ \II I` IIII
I I III oLLI 0 ill ii I I III i ✓1 iI1j11 11\I 1 /I -•Ir1 IiII I I I , , `` \\ \ � l I ` � IIIII 11 I I I LAKE WYLIE/
OiI~
CATAWBA RIVER
l/ _/_/ �// / / ,/' / -;//� .'// '^\ \\ r / `III�i II/ �\ �\ \ \ \/\\ 1 \ \ `l , `.� `�____ \ ��1/ \I i ( / \\\// . \-�\-`\-� \\ ;\\!\}`\. \♦ ♦\ \\\\ I�/ \\\ \�l�r /I, 1 I \) O �t' --' ) II 11 /i II % f /I -1 /1/ / �/ �_/l-_ /// / 'II1IiI\ lII\IiI\I,\II I\ )' •I • wWI / ,I ,IIII1IIII/ 1IIjII 1 I / III II1 I ,I I I I I 1iIIII iyIII IIII I�I Ii I I` \\ I! � //_._/_/ ��,'/—'/%/ j /-'/�- / '_ �-----�\- \)) � \\ \ \1/\ \�\I \\' � \ `, \ /\\ \\\� \\ \\\\\ ��=\\�_— \ - _r \\-=�---\% ��\/��/-/_/ ' --\ � _c/\r^_-_�_J--��, \� \ ♦� \\ \\ \ \ `l �Ji f\(- \ .
♦�\;I`�1If,l �/ '_(/,1 / / y � 1I IiiIIIiiIII,I IiiIIIIiiII
I
I iIII I I 1III I
I
I IiII I I
III II1
NORMAL W.S.E. .E.i \/
--- j% I 565.7 FT.
o `iS�J\
/\/
C650
0fill RETIRED ASH BASIN
I iJI1IASH FILL 1 '-----____- ----------
o II/► -------------- / W /f //`/♦ `\ \10pI I iI , \\----_-_-___ / /I \) 9 )1 \I1 \1 I \ 1 �I11 `\\\�\I jI -------/ /
/ o
I � III I , I11 i115I1/►j iJ,i /1iI �I 1I i/iI \ ,iI111 III 1I1i II I1I1iII,Iij
1IIiI1 II IIIiiII I1IIIi1,IlIIIjI1i1I iI,I11I IiI 1i
ITII1 IIIIi1i� I1 -I l -j„hIl1,I1I1lIi1i1,II1Il`I
ILi�.V�L1�Ii =\r-1 -- -—`-- _
/----------` \'-/_-�-��-(/ _------\ --- ---W 111, --___-
t _\ II I -- ------ -LJLJ
-1-1 - — --_- -_____ __I+ ------------------------ ----___________--------------!------
--_---- _
--------------_;_-----
REMOVE SLOPE I
'-,1 iIl-IiII Ii1Ii1 iIi IIIIlIIII i1 I I I III ���III1IIlI1I 1IIIIIIIIIi1i1 II Ii1II,I1 i1j,I I1IIIII1II1iI l III11IIIIIi1iIol II I1IIlI1I �i1i1IIiI I,1I1I, i1 I
II
I1i1II1 IlI i I
II
II
I 1 1 I 1II
I
I
I1
I
,
iII
RAB LANDFILL TO I)I 1ii lIIIii 1!iI
�0 1l1 1 IaiII vI
OBE REMOVED AS
1(0 T OF THIS PAR
I CLOSURE PLAN.
NOON RETIRED ASHASH STORj GE
Li
BASIN W W I RETIRED ASH BASIN
\ O 0 1
I (RAB) LANDFILL
11 W O1 1j1' i Jill
REMOVE EX. 48" 1 j1 ILL 2 I ASH LANDFILL PERMIT
I1 ASH F
625 CMP AND MANHOLE N0.3612
IJW
J II )IllIlill 1,, I I I I I III III I I 1 I I I I -j
Li 0
O --If,iI IlII III,,I I1I 11iI*I1
lI,I� , sw O 1 I1I 11I 1I1 Irl1Il 11II IIII,,,,IIII11lI 11l 11i 11lI
I ! II I1
II
I III I11 II it lil ,III 111, Ii1 II,)1 \ � IIII 11 IIIIIIII I
\ / 1
1` L i! I _
I i i i I 1 i III/ III I 11 \ 1 —'675>_/
` ---------------------
------------
REMOVE --
EX. 40=____-- — — — — — — — — — — _ _ --_- I I I I I I
---<\\� �\ J— i I \\♦\ \ \� \`\�\/ (� Ili I/ I I I I I I I I // /!' / 1 i -I n _iJ I i I I I I
---------- --- -
\ 1 -650 ----- ---- _--- - -T, 1 I EMERGENCY SPILLWAY
HDPE PIPE — __ --- - _------'----___----- — 1 I 1 I I i
REMOVE x2 l \ \ ���`:�\� / I i 1 i i i i i i I i _— ---------------- 1� _;----=--T-"1-�_- - / _-_ I i i i i I i 1 (TO BE ABANDONED)
1\ - , \ I --------- �_ - - - — — — — — - - _------- - - - I
EX. 24" RCP ,l, I I \ _// , , I --- 1 - --- REMOVE RIPRA
\ — — — — — - - -62 P (TYP.)
I lab
- �` ow o \�- ` //^ _ _ _ - _ _ 1 - - ---_ -_ _ — _ ii/ RISER STRUCTURE
/ 650 --- TO BE DEMOLISHED
I
/Jill I
/ - _ \ \ ,---,\ \ \\ / �� ___ ______ - NORTH 11 1 1 11 /
\ ABANDON SPILLWAY I i I 1 IIII 1 J J
w \� I \ -'� ��'=_-_____ _ - - /�/• (SEE NOTE 14)
,%'' ,® \\ \ /'�/''ll----:=\ _- �.�F����- '"WINi i STRUCTURE TO BE IIIII 1 1 1 1 I 1
`L"-'-' ��"�� 1 , /f/ ,' \ \ ) ' \\ 1 I DEMOLISHED ,, 111 1 111
00 \
1 1/J \ \ � //' , � \ \ 1 `j\ �� I y^` III I / , ♦ i `\ �— �� I / __' • I , I II, I
W �1 .' `\ �• _l . i , I 1 111111 1 I I I
i, J / 11 - ' /` . - REMOVE SLUICE I I i i iii i i i i I I I COAL YARD SUMP
/ E a 1 - - PIPES (TYP.) ,>-- I Hill i DISCHARGE
0E ! \ / • t I I III I I I I
O t----__ '�/ I —OE ^r �� • J , I I1 I I IIII
ww ---_ - �/ 0 \ ,5 /' ,' 11 1 I I 1 I ABANDONED IN
00 / �- m�� I I vt 1?F \ �/ / / / / 1 1 , I I I 1 I I 1 I I
`\. •' � / !/ I I `\,, /-1 1 � i i iiii i i i I i PLACE)
/ I�1 W / f I I •+ #� /• �/ I I I I l l l l l I I I 1
o ! o / 1 1 \� /• T i �liiili IIII
REMOVE TREES �,►� I T 111 i f i i i i i
o TYP. //
() �I • i i i 1 i 1 1 1 i
/ I i I �I 11 IIII I1 1 i • � � /J PRIMARY — �Q�- ' 111 1 1 1 I
1 / , � Ow I I �/ r--\ POND 3 r 1
• ` o f ,' I ' W I 1 I ` /r" _(, ! `- ; ; I I—
/ / 1 11
PRIMARY / • f / - 1
i w 1 PRIMARY
I • POND 2/ % I I III I Jill, 1
' o I I POND1 l i l r l /� 1 I II IiiIII i11 ii 1
w I I r- ^i" I I ,• 1 \��' II I 111111 111111 1
Lu O p O i I I I I• I �/ ---/�- ___------1 • I I Illi I I IIIIII 'I I
c
W
O / \ I O
11O I\\1 I. I �I ✓1 I�� !`' 7� / I I • \\\ I '/�/ c^' / I .II I I I I I i i I I I i I�.
INCHES 1 2 3 TENTHS 10 20 30
LEGEND
- - - - 625 - - - - EXISTING MAJOR CONTOUR (25 FOOT)
EXISTING MINOR CONTOUR (5 FOOT)
DUKE ENERGY PROPERTY BOUNDARY
LL
ommmmmmmmmmmmmmmmm
— — — — — — —
0
KinTCC
APPROXIMATE LIMITS OF IMPOUNDED ASH
APPROXIMATE ASH BASIN WASTE BOUNDARY
LIMITS OF EXISTING RAB LANDFILL LINER
ASH STORAGE BOUNDARY
REMOVE EX. PAVED ROAD
REMOVE EX. UNPAVED ROAD
REMOVE EX. TREES/BUSHES
REMOVE EX. PIPE
REMOVE EX. SLOPE DRAIN
REMOVE EX. STRUCTURE
HATCH LEGEND
REMOVE EX. RIPRAP
1. THIS PLAN PROVIDES A SUMMARY OF CONCEPTUAL PLANS FOR DEMOLISHING
STRUCTURES ASSOCIATED WITH THE ASH BASIN AS PART OF CLOSURE. A DETAILED
DEMOLITION PLAN WILL BE DEVELOPED PRIOR TO CONSTRUCTION.
2. THE EXISTING SPILLWAYS WILL BE APPROPRIATELY DECOMMISSIONED.
3. LIMITS OF IMPOUNDED ASH ARE APPROXIMATE.
4. REFER TO SHEET ALN_C999.001.012 FOR REFERENCES.
5. EXISTING VEGETATION WITHIN THE CLOSURE LIMITS MUST BE GRUBBED AND REMOVED.
6. THE RETIRED ASH BASIN LANDFILL IS CURRENTLY ACTIVE, HOWEVER WILL BE REMOVED
AS PART OF THIS CLOSURE PLAN. FEATURES ASSOCIATED WITH THE LANDFILL WILL BE
REMOVED OR ABANDONED.
7. PERMITTING AND SCHEDULE IMPACTS ARE POSSIBLE FOR POTENTIALLY
ENVIRONMENTALLY SENSITIVE AREAS (E.G. WETLANDS, ENDANGERED SPECIES). THESE
IMPACTS WILL BE VETTED PRIOR TO CONSTRUCTION.
8. EXISTING SLUICE LINES, CULVERTS AND OTHER PIPES TO BE FULLY REMOVED, UNLESS
OTHERWISE INDICATED ON THE PLANS.
9. EXISTING ROADS WITHIN CLOSURE AREA TO BE REMOVED.
10. FREE WATER REMOVAL TO BE PERFORMED AS PART OF CLOSURE PROCESS.
11. ABANDON WELLS AS NEEDED.
N 12. THE HIGH VOLTAGE OVERHEAD TRANSMISSION LINES ARE INTENDED TO REMAIN IN
PLACE AND IN SERVICE DURING CLOSURE ACTIVITIES.
13. EXISTING TRUCK WASH AND SCALES TO THE NORTH OF ASH FILL 1 MAY NOT BE LOCATED
WITHIN THE ASH BASIN LIMITS SHOWN ON THE DRAWINGS. THIS WILL NEED TO BE
VERIFIED PRIOR TO CONSTRUCTION.
14. EXISTING SPILLWAY LOCATED IN SOUTHEAST CORNER OF RAB TO BE ABANDONED
IN -PLACE BY GROUTING AFTER NEW OUTLET CONSTRUCTED.
0 200 400 600
GRAPHIC SCALE (IN FEET)
TITLE
NOT FOR CONSTRUCTION
DEMOLITION PLAN - RETIRED ASH
BASIN
leim=mcom
ALLEN STEAM STATION
CCR SURFACE IMPOUNDMENT CLOSURE PLAN DRAWINGS - CBE
GASTON COUNTY, NORTH CAROLINA
N.C. ENGINEERING LICENSE NO.
F-0342
FOR
ISSUED FOR APPROVAL
SEAL
DUKE
SCALE: AS SHOWN
DES: ANR
DWG TYPE:. DWG
DFTR: JAB
ENERGY®
JOB NO:60603204
CHKD: JDM
DATE: 07-31 -2020
ENGR: JDM
FILENAME: ALN C999.001.022-023 DEMOLITION PLAN.DWG
APPD: JDM
DWG SIZE
DRAWING NO.
REVISION
ANSID
22.0"x34.0"
ALN C999.001 .022
B
9 10
1 1
0
W

-------__-' I o I I \`-// II I`�/'/' \ 1 -- — — — — — —= — 1— --- — — — — — - KtMUVt KIF'KHF' (I YF'.) �! i
\iff Noma=---
-loom-Jc
o o I /^ -' I - — — — — — — — — — _ -_ - //�I�C,/ RISER STRUCTURE
r \ \ ► \ . / / -g50. / Mimi-r — __ -- _--------_ // ,
_ \ -__ ----=----- �- —_=+- _ = TO BE DEMOLISHED
w
\---------- _ ? 1 r_ t _______ _____ DIKE —
ABANDON
\ / , � 1 1- `\ \ � / �Z_ -_ _- NORTH �
�f 1 - _---- -- _ ABANDON SPILLWAY IIII I IIII 1 l / )
"\I/ lI 1/ / \/\ ►i /1\If I \' //I/ 1 � \'\o I 1I 1 \/I i/ / lJi// / -\lI/ /�J \ \// // \-\/ /\ /�4// /- i\ — '/ \-,/ -❑/�`\/ / /— \\/'\ 'l/ \/\Jp /1 /} ,—i // I/ (' 1 �� //// \ oI/ // I /\/ / /// / /\ / /,\%II/ 1I I / /I /1 // \/ // / 1\/ J-1,/ / \/i\/ _\�/ /1/%, li j III / '\I 1I /�li' � 1II %I / 1�/ /t1II 1 I�► / i\1\1lI1,I II, lI1 I �-I -i1'/1i j \ r 1 % \ /•/\ \//II - �\ / I, II, II iI / % � Il1 1 / / // 1' \/ \/`rjl l r -//i►i'l II 'i1II1' /// � /I/1// I //- / \ l,\ I // // I/1I /` /\,/>/ \/ '\\ /^I, \'I \_\ �l /1_Ii�\/� Il 14I' .I -/ 1 _ ,// ./ /'-J \I ,-1 i1/ lt(_/\ /li o\ '4 / I^/1-/ \' \l_ /l \\ \/-` Jl\-I, I I '\ \I I_/ /- I `1 ❑1 1 \II) 11/ i - \► 1\�1-1I_► 11 \r \ `\,/�/ \- '\ / / `, \/, / / —\/\- // \\�:S/\-J \ �\Jlir— \-\'-_ \r` / / 7 \ i \�- \l\\ 1 \/\\ -/ i-\;` \_-/\-\ .-.\-- '--/-^-'\I-I-///\,\1-/ - 1`I 4 .__\__ ,\\\/`�-- ! \ \\\\ �\ '\ '--\ `\ \\' 'r-\ `\ - \\\\\-_ \/�/ \i - \-`�/_._\\% � -\/- _r-\ \//`'-/--__\._ ,,-/__// -_\ -_' \ ,`\- `,-�` \-/i \ � -C'--I_�S —I\_ ' ------�/_ _-/_- 'I
�/� '��' i/i I/ , , / I /-J�►� \/`�\/ /\/`\`/\ -=^ _,/.I^ -\\_ I1\/�\` /r 1\� j c- 1 \�
/y-'l/1 7.r--''1/.r�y _/ --`/ �1/'-�/\_--''�+ \ / '/ �!v` /I-1�-I l / v/ y1 //-7�- -/j / // I`\i'-/ -- f\-'�\ _�_- -/ ,\\�J/ I�r_\--//w1-! � -- i\, L/\.I'-\--\/ \/ \ �1 \\/1\/--\/�I \/I / -'/- -\ •/ � \ ' - y\'j \E •`` -' / � / / �--/I/ \'/iA1I--J'/• •: -' �`-�/, /1+--s / /--r, /� m.- / '//•'-_•1 /- / / •� //1 / // -'\ , / �/\/ \ 'I�i/ iIII I 1 ) I 0 ,-l/II/\I! I /II ' IIII � I J. /�/I IIII I I II I I I �/ ,•� l.I�—i IIII • _/�ij1r j I1`>\ \�.' -��/- .- //I—� •/1J`'.._ tT'Ia\ r `-'��'„i _ E'\='�\'\/�`�i^ 1 < '\-� /L \D'-J1 �\- �-\� \F �\\ �J-\���`-`1i-"•\-r\\'t�\ \II v/\ - �`%-a..�-.s— 1- —;-v\;` �/-/\/,/.' - \'\�I \••,�II•�fI\ � /• '►''\ .- `. \/.\- /\\-\ \/\i-/1:�Ir`i`r.i\ �, •`�-,./`/ \ l�I`I •li-�/ �\/,/!�' 1f +,\ `�' •/ �\�� /��-\ - //\ ',/ .,'\_.-•,��, . I�r/- `1l, // '�\/'-•-\ r/i//�1'1\ 11I 1- •- ��'--r �/ /-_\- , I�/ / �`./r--i -",1'/r / >•\// .�1/ ,\r\,1J•-/ . 1 �1i f- I�`T�/ '1\G/ -"J>\� /�r / 4.��`-• /.'\,•'\ �♦_i1I\� lJ"(Tl` _, \/l �J_•�i i/ /�ll/i I i//'�`i1 \i-` I/r _\ '��•_1.i_�I- ' c_/ / >lI-_-• r I%//\\_\� '.-/ .,/ /��-, - �/� _�--J/// _ c' �l\/,/-� I1'-/-/ IJ%f'r /-// _ ' \ I/ ,_'/ / `/i_— �//_ i-./�./// '_/\ �-,\� J'� \ (SEE
SEE I'1\�N�\O�TE► \I\ \, I1I1 i II \ I ,\/ \\1,14II•1/ \ \�`t - -.)o STRUCTURE TO BE•-\°+-i -I.\� -�/`lI(\.1tI /.i,�I I I -1 I\cI I, `�11l 1l�r` �•/ ';! I -(I/ _' I;I1Ir 1I I1 11/ 1i I I I 1iII j1/ (1\I-( �I /I 1 - / I, (1 rIl)<III 'I/i\�J\(/1\I\\II'I 1i1f / /i c1\ 11�I /I r 1r �1iIlii1Ti +++( /E
I III�/lII I iII 1 II II II iI I I /� 1Ii1 i I i i I\IIIIiI_II/�I/ /IiIII�IIil�IlIIIi IIIIII�IiIIIIIIIIIIiIIII1III 1IiIIiI1I1iIIiIIIIIIIII/IlIIIIIII I I IIIII IIIIiIIIIII,IIIII IIIII i /IiIIIII1iIIIIIIIIII1IIIIIIII Il jI lI� III IIII III III II1IIIIIIII IIIIIIIiiIIIIII1iIIIiII IiII1 1IIII II �II I1III III /iIIIIIIlI IIiIIiIIIIIIiIIIIIiIjIIiIIIIII II IIII' IIIIII IIII II I iII I , I1IIIiIII \IiI =TIII I1� I lIII il I I I II IIIIIII IIIi I
Ii I II ' I i iIII /I IIII I Il I II i IIII II I IIIIi II I/Ij �I1 i11I1II I - .I 1II l IIIIIIIIII i I j i lIiIII III1/IIII IIIIII Ii1ii i III 1jIrII IIIIII1 III IIIIIIIIII iIII I1I IIIIII
iI1iIIII11if� iiIjI iII jI iI/I1/ I 1 IIIII II IIIII IIIIIIIIiI IIiIiII I I IiIIIIIIIIIIi IlIIl IIii IIi II IIiIII Ii IIiIII III II jII(IIII IIIIiII IlIIIi1Ii 1IIlIIIi I IIIIIII I I'II IIIIII I�I
IIII IIII I1I 11i IIIi II III III II IilIl IiCI OIIII II II IIi II
IIIIIIIIIIOj II I,
i I IIr iIIlIIIII II l
\
lIIII/
iIIIlI
wDEMOLISHED00 II/
REMOVE
ll l
II '
�IiII
II
1I /I"II I III1j
I
IiI 1I/ I
I II
I
I
I�\
II
jIIlII
II
11
II ( I
l
I\
I I1\I11l `
I
I \/
I;\
\
\ \\\
\\I\ \
\ \\\
\1
_I\\
\\
\\•` \\ '
\\
\1\\1
\ I�\
\
\\
COAL
OAL \\Y1/\
\\
A
` R/
\D\
S`%
U
M
Po SLUICE
w I 0 PIPES DISCHARGE
O . (ABANDONED INOO PLACE)
W
!o
------ �REMOVE TREES
(TYP.)O OF*
/,/ I PRIMARY
/
W / POND 3"LOU o
OPRIMARY
w PRIMARY
O POND 2
POND
Op ^� j I //
Wp I
O
OWO -----
3 IV
\p p 0 LAKE WYLIE/ CATAWBA RIVER LLJ
NORMAL W.S.E.
rf'y 565.7 FT.
LW w
Op /•jo
`'pO •
I �Yam• w -• • • •
W — — — — 7 U)aI1 W W
O O I wI IllIIII I
► o CHEMICAL ,
BUILDING (TO
BE REMOVED) GEOTUBE (TO BE Ifhi `
REMOVED)It /I _
�w / ,j ol
------------- IIII
�I I POLISHING POND III I
w IIIO
\`--Ik1
w%
/ If
-r
WW j 00 IACTIVE ASH BASIN
w w f
O p
Wj
CO p WW
00 / IIwpO .00--
IF Lu
LLJ
o ABANDON SPILLWAY 1 1I1 1p 1 1 IIoo f:� I II(SEE )
Li Li RISER AND ti1
oo
`L' INSTRUMENTS TO I
REMOVE TREES BE DEMOLISHED0 wpOO (TYP.)0 -� W W
O p CHEMICAL
o BUILDING (TO
r IL BE REMOVED)ww -------
000— L. -111INVANI
\ ff-----
O— EXISTING WTS PAD
650
Lu
O l /ij \�\\�I 650-
( II
150
60
--- ---
\ 1 \\ \ \ \ \ •-- 111
It
mmm mmm mmm mem mmm mmm moo Mmm IIIIIIIIIIRJLIIIIIJ�
INCHES TENTHS
20 30
ALN C999.001.023 "mv. B
LEGEND
- 625 -
EXISTING MAJOR CONTOUR (25 FOOT)
EXISTING MINOR CONTOUR (5 FOOT)
DUKE ENERGY PROPERTY BOUNDARY
— —
APPROXIMATE LIMITS OF IMPOUNDED ASH
APPROXIMATE ASH BASIN WASTE BOUNDARY
LIMITS OF EXISTING RAB LANDFILL LINER
LL
•----------------•
ASH STORAGE BOUNDARY
REMOVE EX. PAVED ROAD
REMOVE EX. UNPAVED ROAD
REMOVE EX. TREES/BUSHES
---------
REMOVE EX. PIPE
— — — — — — — —
— REMOVE EX. SLOPE DRAIN
REMOVE EX. STRUCTURE
HATCH LEGEND
REMOVE EX. RIPRAP
A I r1 T r C%
1. THIS PLAN PROVIDES A SUMMARY OF CONCEPTUAL PLANS FOR DEMOLISHING STRUCTURES
ASSOCIATED WITH THE ASH BASIN AS PART OF CLOSURE. A DETAILED DEMOLITION PLAN WILL BE
DEVELOPED PRIOR TO CONSTRUCTION.
2. THE EXISTING SPILLWAYS WILL BE APPROPRIATELY DECOMMISSIONED.
3. LIMITS OF IMPOUNDED ASH ARE APPROXIMATE.
4. REFER TO SHEET ALN_C999.001.012 FOR REFERENCES.
5. EXISTING VEGETATION WITHIN THE CLOSURE LIMITS MUST BE GRUBBED AND REMOVED.
6. THE RETIRED ASH BASIN LANDFILL IS CURRENTLY ACTIVE, HOWEVER WILL BE REMOVED AS PART
OF THIS CLOSURE PLAN. FEATURES ASSOCIATED WITH THE LANDFILL WILL BE REMOVED OR
ABANDONED.
7. PERMITTING AND SCHEDULE IMPACTS ARE POSSIBLE FOR POTENTIALLY ENVIRONMENTALLY
SENSITIVE AREAS (E.G. WETLANDS, ENDANGERED SPECIES). THESE IMPACTS WILL BE VETTED
PRIOR TO CONSTRUCTION.
8. EXISTING SLUICE LINES, CULVERTS AND OTHER PIPES TO BE FULLY REMOVED, UNLESS OTHERWISE
INDICATED ON THE PLANS.
9. EXISTING ROADS WITHIN CLOSURE AREA TO BE REMOVED.
10. FREE WATER REMOVAL TO BE PERFORMED AS PART OF CLOSURE PROCESS.
11. ABANDON WELLS AS NEEDED.
N 12. EXISTING SPILLWAY LOCATED IN SOUTHEAST CORNER OF AAB TO BE ABANDONED IN -PLACE BY
GROUTING AFTER NEW OUTLET CONSTRUCTED.
13. THE HIGH VOLTAGE OVERHEAD TRANSMISSION LINES ARE INTENDED TO REMAIN IN PLACE AND IN
SERVICE DURING CLOSURE ACTIVITIES.
14. EXISTING SPILLWAY LOCATED IN SOUTHEAST CORNER OF RAB TO BE ABANDONED IN -PLACE BY
GROUTING AFTER NEW OUTLET CONSTRUCTED.
0 200 400 600
NOT FOR CONSTRUCTION
GRAPHIC SCALE (IN FEET)
TITLE
DEMOLITION PLAN - ACTIVE ASH
BASIN
P"=com
ALLEN STEAM STATION
CCR SURFACE
IMPOUNDMENT CLOSURE PLAN DRAWINGS -
CBE
GASTON COUNTY, NORTH CAROLINA
N.C. ENGINEERING LICENSE NO.
F-0342
FOR
ISSUED FOR APPROVAL
SEAL
r�
DUKE
SCALE: AS SHOWN
DES:
ANR
DWG TYPE:.DWG
DFTR:
JAB
ENEIRGY®
JOB
DATENO 07 -31 - 020
ENGR :
J DM
FILENAME:
ALN C999.001.022-023 DEMOLITION PLAN.DWG
APPD:
JDM
DWG SIZE
DRAWING NO.
REVISION
ANSI
22.0"x34.0"
ALN C999.001 .023
6
9
10
co0

m Ilrno
G
` _ Qy� �� \ / /� \ x1 'III �, car\ Cr
P
, ` ----- = LANALLEN u
V RD rr, , .. _ i �_ ^i ; / /IIn II �\ fr
` -� i \ r - -- -- I -- r►-�1VT r �Li- F`� - �'''� ALLEN STEAM STATION ii i J �i< !� J
COAL YARD 'IIIII \
\ I I i _ p - -� �� -\\ ' `\,/L'� \\ \ \ i; 1.' �__ �> �? i IIIII
J I 1 1 I \ + . -� - • , \ / \ \ I \ \ \ ... I I1/I lip
/ \ \ \I \ f .�•- t/(r J Till"
If
II ``I LINED
\ \ I% - _\ •- _ \/ �..�..� ,/ \ \ \ ( /ti. l l 11 %/1 11141 r^
TL 1A606 (100kV) / , �� \ \ //\ \ \ 5,./ri v��., c)J l r Ilr 4 �I�rI HOLDING 1
1 TOWER 4 ♦ `/ �" \\ i \ \,1 II \ /h , i / i I i�i , BASIN \
ASH - -6_ i SEE NOTE 8 i / �\� \\ \ rl \\ \\\
\ - `i,/ / \ \ \ _ yr ♦ , L STORAGE_ `\
__J ,r,� l /'\_1 %r
IIII o r_`�\
(o \�, l C Y TL 5N5 500kV I \� i\ \ -NN,
\\\`� ` - _ \ \,
�\ \ \ \ \ \� \ \�;�\`.���J - �. �C�' �' AREA TO BE
TOWER 67 \_-f I \ \ \� \ \ -\ \ �: -'
`----- _
I �r - \\ \ \ / \ \, SH BASIN DIKE = \\ /rJ
,� 1 ,� _a r'` ` ` \ \ \RETIRED ASH BASIN DIKE = I BACKFILLED AFTER
(SEE NOTE 8) ` r� \ `\ `\\ I\ \ `\ / ., \ _-- ,. \
\. Ih , \\ \ �` \ / (GASTO-016) _____\\\�\ c REMOVAL OF CCR
/ I l \ TL 2A10 (230kV) , \ 7 \ \ \ \\ , I - / - - - - \\
/ ► �I CONCEPTUAL NSLF FOOTPRINT \ I`. \\\ 1 \ \Il\ ` `---
`�\ \\ r 1
TOWER 4 I \ �`�\ \\\ \ \ ` ` i `-
SEE NOTE 1.2 IN GENERAL \ ( I I 1 \\\� \\`�^\\ \ `
( J w SEE NOTE 8 / 1,♦ t 1\ \'\\{ `: 11
NOTES, DRAWING NO r I� ( ) I / I 1 �1\\\\�\ �, \\l/__- __ FUTURE STORMWATER'' / / I Ill+ I I11 II CONCEPTUAL DAM BREACH
/ I , ♦ . it 11 I' I I 1 �\�\ \_ �j .' / .' Illlll I I I I
ALN_C999.001.012) I I J •• I I 1 I I \ \ I\�` MANAGEMENT AREA ' / IIIII II 11 AREA (SEE NOTE 1.3 IN
h ASH 1 \\
I I ♦ I, �• _ �: -- ` _ i / J II . II 111
P. & FILL 2 I I p I i \ �t-"'-�� - - - _ /'' Ill,, , i10l GENERAL NOTES, DRAWING NO.
I r \��� I I • I / - r +_ rr„__-, _ �� , ,' U 11 l II of I ALN C999.001.012
I I `�_- �\ RETIRED ASH BASINIIII I C°I I )
' / \ / I a / I • / 1 I I TL 1A482 (100kV) , Illlll 1 I„
A` TOWER 3 \ NORMAL POOL 615.5 FT. I�lll�l _
�� I FIL FULL POOL 620.0 FT. /I
, • \� ,' , h (SEE NOTE 8) r.)f... ..tir.:� i_N, I I I
\'mil +•.`._
TL 1A606 100kV I i +�r� iL LL\\--'--�~ "`���� LAKE WYLIE/
TOWER 5 1 I f RAB NORTH - -_\ `\ �/ I I CATAWBA RIVER
--_
y (SEE NOTE 8) ' ' STORMWATER \ `I ;/j,/ ; J I I NORMAL W.S.E. 565.7 FT.
l ' � r j-- ___ �/ -- �' �► \ • � - � . r' � i � � -I CHANNEL ) l / ; j/ � / ,--___ 1 � l
1 / '- - I `----------t
I �� I
l L
\`` - IC ------- �Oi'i�%J�if'/-
I I -/ / /--= ice' '\\ I ASH i ��` -- - >" IC -11 -_ -- IFJ.// \'' /' / / /i/ � 'I 11 1 11
�t \ \ - _-�� \ \\ STORAGE �' I _____ NI I I / - RETIRED ASH BASIN LANDFILL .'I to
I' 1� _,ASH LANDFILL PERMIT NO. 36-12
`so\\ \\ �\ \ !i `\ \ �,- �, �, - f•------------- _ \ ill - 11- RAB SOUTH J�`�� •' i I lliiill
'`. • \ �\ \ 1\_ s \ I \ / I - / / . ,/ / IIII II
\�\ \ \ _\ STORMWATER j
j--t/ I IIII
, �_ � .� � _
N\ CHANNEL
yYc �i I+I�� ,` - �\ �� _ II _ 11/'i'�-'��\\` jl I I II 111
FUTURE STORMWATER �\ \ ♦ - \� `�-, / I / \ ,AREA TO BE BACKFILLED I I111
MANAGEMENT AREA ����r- N,` � \\ ,\ ,� ��\r �-=-+- / / / f//;; - ---\\ \ AFTER REMOVAL OF CCR I II�i1i i��llil
\,'� / -_ ,_`__�1\�,asyaaaav 1 fj IIII
\, -- - / - ��_ - - TL 1A482 (100kV) � .. FUTURE STORMWATER
1 \ _ '------- ♦ \ - `L % \ `�; _ ---� TOWER X MANAGEMENT AREA
------------ --�`_------- � -_ 625 =_ \\\
-- � =� - TH DIKE NORTH DIKE _ -__ __ _- = 625 = -
` -, / 1 ` ► `_ / =_ OR-- _ -- -= ram==
1 ' 1 \ 1 \ I/ -� �/ - - - - __ ___ _, it I��-- _ _- ____ �_600- I I 1 I I II
/ I \ TL 1A606 (100kV) �� \ I I _`--/�_--_ - y IIIRr====__------
TOWER 6 \\ l �•r i ��i.i=-_-- ``-_-___ = - II I III Illr-- r I ' I I
,
(SEE NOTE 8 1 `. T / I IIff� - - - ,r -\ III !ii III IIII / / / I �I l +
l r co`'J `\_ -` ) I i / IIf'II TL 1A482 (100kV) / r �I 1625 Ili O ( l
t`\ 1 _J // p / / 2 // // -Q I % \ J J I Ill O I
` \ - - - =� . W.S.E.=
\ `\\ J/' - AAB TO RAB I + /,�� --- ,u. 636.1 / I I / \J ill \�iiI I
\ _ ,----
u
STORMWATER /
/ w �/� / / - - - 04/17/14 / 'y �. IIII
w� CHANNEL / o o I ,' ,' .' / ��i/ / 1 1 III
/,/ / /�.„MJ,. ----_ CELL 33
/
\\ /' CELL 2 / / Illlllll II Ilili II
w i CELL 1 i 1 I /, / 1 W.S.E.= `Ill l\\\ \ •11111 III iI I N f+� 1�
o / o o IJ / / ,/ ,� // / � / 639.E `\\\�\\iliilililii 1i I•C° i I To ski
' O m I J-' / �'' / / / W.S.E.= /` \ `\\ III IIIII IIII II II
/ f / . 04/17/14 1 \� lli1111111 IIII Illlll
/ 640.5 I ,/ �\ ICI ll III 1 IIIII Illlll
,J/ \ �\ i li i 04/17/14 ,_�4_ ��liiliil Ill IIIII iii fl
o / _ I \ _____ .� \ \ I \ ; �� I \\11111� I� IIII Illll II
/ l w\ 1-- \, \ 1 ` / _ \ \ JI ll I IIIII III II
CHEMICAL O Is2- I ;-'----�\` ` \ \ `\\ \\ \ \\ \ i `\ `\ I�-�., IN
III li�l�ll
1 1 ( ` \ \ \ \ I I \ \ �, I if III 1111111 I
\ --- '-- BUILDING -----, t `\ ` \ \ \ \ \ I \I \ �__.. �. \\ \. Ili Ilil�lll 1 1l� III
\ \ \. _ \ \ \ \ \\-------'_ -� 1 \ III I IIIII IIII II I
(REMOVED) 1 `\ 1 \ `\ \ \ \ \ \ I ` 11 I1 111 I 11 I I I
o ❑ r ` 1 \ `\ \ `\ \� \ �\ I /� \ �/. I ` I I I I I 111 I I I I I I I I
, � � � � \\ , � � 1 r -`/ \ I I /1\ 'fillVill
II 111 I I I
I TL 1 A606 ' 1 \. \ I 1 \\ 1 1 III III II
\ \� f \ CONCEPTUAL ABLF FOOTPRINT111I 1 111 I I C/
\ 100kV O\ \ \ \ \ ./ / ��' + > \ l 1 ! 111 II fill' fill I
\ ( ) ] 1 ,,, \ \ ® �� \ \ I , / ,1 (SEE NOTE 1.2 IN GENERAL\. ,✓ \ I 111 ^�Jlflll. IIIII ii► i� N
\ I I r / NOTES, DRAWING NO \ \\ t\ III ii 1 I I IIIl11
\`\ `�. \` _ ` � ��` l / .' J \ I \ \ I 1 111 111 Ill f l
I \ 'Qo I `\ N N / �/___ / ALN_C999.001.012) \ I \
TL5N5 \wO I %\ /A/ \ I l IIo
I \ j I j 1 \ t I\ /_\ \\ I / /, I /�- �- / % I 1 it � I N 110
h I I 1 161 \ `-/- (500kV) \ Lo
1 /,// _---- / , - /
W
` I III / l l Y � II '
/ I 1 I ► 1 / / \ \ i \ \\ TL 2A10 \ o
It / 230kV _ // ; i/���f // `-->' v , f ; / \I ll` I O
1 I ► i \ \ \ \ ( ) _ Imo' / I Il rJ i �� 1 f .' �- /, I f I ~ ~ 1 I
/,,I \ \ ^,- - / /'/ ig If
i ---' �,J / / /-/ ` i i \ ,IIII l I Q Q \,\
1111J (D \
�_ -'- _ /IIII ii�// ' .�// i / /'/ ��\\�\ i fy / 11 f`\\ "\ I +. IIIIIi�I II ii111 jlll 1\
�\ l AREA TO BE BACKFILLED'"`' \\\ -� w - �! �/i ,__'' �,-' / - / �,"�' ,/ '"` ,' '°` _ -// i POLISHING POND Illlll Ill I I li I `• \'
AFTER REMOVAL OF CCR -' - - o o ,�/_ ;/f ,' / / ' I , "IN l n 11111 fill \\
/ I I ------- -- -. - -/ =_. / /' / ' / / W.S.E. _ -� 1\ �\ \ ` Illlll I i1111 i1 I \
\`\ __ ` � ��i �./ 'r / / � ,/ � I % i 634.9 \ 1\ \ �� \ 'IIII IIIl11 I
, 1 \ - - / _ , _-\ / _' / ------ / \ \\ -- 111j11111111 I I I f I I
-�-
1 ACTIVE ASH BASIN / '' �� \, �`\•__ IIII i�lf i+ 1i1i lilliil
W.S.E.=
\
NORMAL POOL 634.8 FT. Ill I I Il l 11
/ / '- ~ _/� (\ // �i / /. .' /+/ 634.9 l 111 II I
I / / FULL POOL 639.8 FT. - , � r`/ I
04/17/14
s `\IIII DIY`^�4 \R� l ll I1I
\\ '-
N.
FUTURE STORMWATER.
---\ ��
--N\ `, I - / -- t_ -\ / ,/. �- MANAGEMENT AREA ,\
`\ --� \ `-_
, l / �__ �i -IIII 1 I II
/ \I / �Yc �/ /�lic - - l f l
_ ►��` /'il` .- , AREA TO BE BACKFILLED
' - _ ` r I �`_ - % ; '� 1 / ' EXISTING 'AFTER REMOVAL OF CCR'- l 11 ll f1 1
-- \ _ \ \` \ t J - -- i- '%i-, \Ill I f \\ / , ' - `� \�lllll I 1 1 1
i, -----' ii' ` - � �'------\ `, `\ Illlll I I Ill(I \
- . \ . . . y
I \ _ I �� / ----- i IIII / WTS PAD _ �- ---- \ \ I �III�i 11 I I ll \\`.
/ 639.5 _ , \ / / / / / I
\
-----
AAB AAB SOUTH CHEMICAL
LAKE WYLIE
100-YEAR FLOOD
ELEVATION: 571.3 FT.
I
I
EMERGENCY SPILLWAY
(TO BE ABANDONED)
- PERMITTED SPILLWAY
(TO BE ABANDONED)
- NPDES
OUTFALL
SWO15
COAL YARD SUMP
DISCHARGE
(ABANDONED)
CONCEPTUAL DAM BREACH AREA
(SEE NOTE 1.3 IN GENERAL NOTES,
DRAWING NO. ALN_C999.001.012)
.AKE WYLIE/
TAWBA RIVER
)RMAL W.S.E.
565.7 FT.
LAKE WYLIE 100-YEAR FLOOD
ELEVATION: 571.3 FT.
JURISDICTIONAL STREAM
�\ N
>1
CONCEPTUAL DAM BREACH
AREA (SEE NOTE 1.3 IN
GENERAL NOTES, DRAWING NO.
ALN_C999.001.012)
SOUTH `� ----- _-
\\ • / /' \ `�-�' -\ _ _ STORMWATER 1 l
STORMWATER - - , \ _ � 1 I I /// ,�- (REMOVED) /
h I O \__ '�w - - \ _---, \`: CHANNEL I I / I/�--_
I co \ CHANNEL -s `-- - - _ `\`��` \ 1 + f \J ' / /�� .
•III / __` \ _ m
I IIII' `\ `\ `\`- --/ /'1' \` ``�\� `\�jllrc
\ \ \ \ / 1
/ \ \
Ld
NN If
iill
\ 5' CONCEPTUAL SSLF FOOTPRINTIbI
i i I i (` (SEE NOTE 1.2 IN GENERAL
NOTES, DRAWING NO
ALN_C999.001.012)
_ / \ f jj yi
.01
NI
If
r'/ �``: JURISDICTIONAL STREAM \ l ► 1
/
/ f
\ , \ \ \ \ \ J I / X\NN
\ \ 1 I , /
11 N l I I I O \` `\\ \\ I I 1 \`-'' �`-' _�\ \p 1 1
CD
\
NPDES OUTFALL 002
PERMITTED SPILLWAY
(TO BE ABANDONED)
JURISDICTIONAL STREAM
625
- - - - 625 - - - -
ALN C999.001.024 wv. B
LEGEND
PROPOSED MAJOR CONTOUR (25 FOOT)
PROPOSED MINOR CONTOUR (5 FOOT)
EXISTING MAJOR CONTOUR (25 FOOT)
EXISTING MINOR CONTOUR (5 FOOT)
DUKE ENERGY PROPERTY BOUNDARY
APPROXIMATE LIMITS OF IMPOUNDED ASH
LL LIMITS OF EXISTING RAB LANDFILL LINER
APPROXIMATE ASH BASIN WASTE BOUNDARY
�0•�*0� LIMITS OF WATER
100-YR 100 YR FLOOD LINE
---> _�_ _�_ - STORMWATER FLOW DIRECTION
HATCH LEGEND
WETLAND (SEE NOTE 4)
POTENTIAL HABITAT - SCHWEINITZ'S
SUNFLOWER (SEE NOTE 3)
PROPOSED LANDFILL LOCATION
FUTURE STORMWATER MANAGEMENT AREA
NInTP:c
1. LIMITS OF IMPOUNDED ASH ARE APPROXIMATE.
2. REFER TO SHEET ALN_C999.001.012 FOR REFERENCES.
3. POTENTIAL HABITAT FOR SCHWEINITZ'S SUNFLOWER WAS IDENTIFIED BY AMEC'S JUNE
24, 2015 NATURAL RESOURCES TECHNICAL REPORT. PRIOR TO LAND DISTURBANCE,
THE U.S. FISH AND WILDLIFE SERVICE MAY REQUIRE A BIOLOGICAL SURVEY OF THESE
AREAS.
4. POTENTIAL JURISDICTIONAL WATERS (STREAMS/WETLANDS) WERE IDENTIFIED BY
AMEC'S JUNE 24, 2015 NATURAL RESOURCES TECHNICAL REPORT AND SURVEYED BY
MCKIM & CREED IN FEBRUARY 2016. CONFIRMATION IS PENDING U.S. ARMY CORPS OF
ENGINEERS REVIEW.
5. WORK WITHIN THE 100-YEAR FLOODPLAIN ALONG THE SHORELINE OF THE CATAWBA
RIVER MAY REQUIRE PERMITTING.
6. THE INTENT IN BREACHING THE RAB AND AAB DIKES IS TO REMOVE THE DIKES FROM
REGULATION AS DAMS. THIS WILL BE ACCOMPLISHED BY PERFORMING A FULL LOCAL
BREACH, I.E. TO REMOVE A PORTION OF THE DIKE COMPLETELY DOWN TO NATIVE
GROUND AT ITS LOWEST POINT SUCH THAT THE DIKE WILL NOT IMPOUND WATER OR
CCR MATERIAL. A SEPARATE NEW BERM WILL BE BUILT AROUND THE FUTURE
STORMWATER MANAGEMENT AREA FOR LONG-TERM STORMWATER MANAGEMENT.
7. STORMWATER CHANNEL GRADING IS NOT SHOWN ON THIS PLAN. CHANNEL LAYOUTS
HAVE BEEN CONSIDERED AT A CONCEPT LEVEL TO VERIFY ITS FEASIBILITY AND WILL BE
SHOWN AS PART OF FUTURE DETAILED DESIGN.
8. ASH SURROUNDING TRANSMISSION TOWERS TO REMAIN AND WILL BE CAPPED AS
SHOWN ON SHEETS 031 (TYPICAL PLAN AND PROFILE) AND 037 (DETAILS).
0 300 600 900
NOT FOR CONSTRUCTION
GRAPHIC SCALE (IN FEET)
TITLE
SEAL
L=com
N.C. ENGINEERING LICENSE NO.
F-0342
FINAL CLOSURE GRADING PLAN
ALLEN STEAM STATION
CCR SURFACE IMPOUNDMENT CLOSURE PLAN DRAWINGS - CBE
GASTON COUNTY, NORTH CAROLINA
FOR
ISSUED FOR
APPROVAL
DUCEDWG
r�
ENElk%1-7Y®
SCALE: AS SHOWN
DES: ANR
TYPE:. DWG
DFTR: JAB
JOB NO: 60603204
CHKD: JDM
DATE. 07 - 31 - 2020
ENGR : JDM
FILENAME:
ALN_C999.001.024 FINAL
GRADING PLAN.DWG
APPD: JDM
DWG SIZE
DRAWING NO.
REVISION
ANSID
22.0"x34.0"
ALN -C999.001.024
g
r�
•
0
N
co0
INCHES
TENTHS 10
0
1

ALN C999.001.025
LEGEND
Rom. B
nv
--------------
0
1 1 \ \ \\ \
N..
00 0 \ 1 \\\ \ \ F ofE \\o
\\ )
\
1°ALLEN STEAM STATION \
t
I
00
OE \ 0'\ 0 �OE
vI ► ,--- _ ___-_------------- i . \ ��/` o o� \ / ►� \ \ f .:-. . I ,, llr', lf,,,I;l;�
30 / rri �_- ° 3 Q Q \\ \ \ �\ I \ \ .�` - / `'� ' sir/ / (' `! \ /30
30 30
30
3 It ` j `\ ht 111 cf 11 11114i
Lj
CE
It
EN RD ,' // __--, I \%\ - ``\ II r / \ — / /1 ' \! `/ // /1p
_PLAlow-
_ .�� \ I \ \ \ \ i . t \ ? COAL YARD
' / \ 1 �� \ \`� 1 r , �i ♦�♦a■■■any \ / I 1 / `-�- - \\I I 1 �� t�
Mon
%
' • \ /n II
1 I \ \ I / , - - \ _ \ \ i \\ 1 -r J� ( 1 / l�llll / II LINED HOLDING 1�
.t6 ♦ l \ \ / \ \ \ \ . / / / I I
_, \_/ o o � ,�_ TL 1A606 (100kV) �f -\ \ \ � / \ / / /
1 � ��--' ` `\ `` /' / `\ \\ � \ % \ ` 1\ � / I /+//� I BASIN ,
,----__ _ _ p _ _ TOWER 4 \\ \\ / 104.
\\ \ / \ ! \ \ ( 7� 2 11/ �//✓/9,,�, �� 1 / / 1/I % I I
I i —�--- — (SEE NOTE 7) \ � `4 /i \ ` `\ \ \\ \� \I \ �yr 4 l � � /
30 / 0 30 ) 30/ 3�3/�—I—T 3� — 30// 11 \\ ' //�, % 640 — —625— �� \ \ — - 'i /, �\ — \ ! \ , \ (/ / / I CD / \ \\ - 1
OE( OE ,- --- '^tiv%v'''^rly t, / / / ,' j j \ --- \` / / \ \ \ ` � ' ' 1 I II(
-- — _� ■ 1 - -,_``\ 1�\ ��' / \\�\R\ ; '') `\ i' \ i \\�jl� j III / �\ /
------ ' /\ \ \` / ♦ / +cT V f\ a _ Y----- --- \\ \ 1 \\ I I
I -- / ,' / ' ` \ ' ,'' ,�- • O '- - _ • a--- [��-------- -` ■ ` $ , / 1% \ \t (\\\`-J ' ,' / 1I \\ \\ ( � V
I I I I , f- \ /' _� /■' -
vow -----I '— - - \ \ \ _ - ` � l
-1
_iv
\ \ \ \ .,/
7f
-- --=�
\ ■i TL 5N5 (500kV) __ �_� •, \co co if(LoD
� \ \ - -- !, \
Ilk
--�■ — TOWER 67 ■- \`_ �— \ \ \ \ \ \ \\ \\�\ \� i t�iil
S n'� / SEE NOTE 7 ■ \ \`__�_ ■ `\ \ \ \\
1 II / I I ' ice' 1 / ° ■■ \� _ _ �� \-4 \ \\`\, \ ■\ \ \ ,/ /� \ \\ \�---
/ 1 / CONCEPTUAL NSLF FOOTPRINT ` i i \ ---IL \ \ \ \ \ 1 1 \ • I�\ \� �/ / -/------- /�_ -= 1=- __ - - - _ - - - - - \ \\\N
\ \
\ \ \ 1 \ \ \ \ --- 1 /
\ + + NOTE 1.2 IN GENERAL \ ® ! TL 2A10 230kV \ \ \ ----'�r' __--_- ----
(SEE
_I � ( ) it \ \ \ 1, � / 1 �� \
NOTES, DRAWING NO ■ TOWER 4
I 645 —�---� . r'\\\ \\%, \\ 1\\1111
II II 1 1\� \ `\-�--- _ __''' /r \\ \\\ I 1-
1 \ \ \ \ jam// -___-- ______`\ AREA TO BE BACKFILLED / II111 I IIII 1 111 II 1
ALN C999.001.012 ♦ SEE NOTE 7 ■ ■ I 1 1, 1 1 I =
i ) 1 / ��\��� / II / ♦♦ ■• ,� ■ // \ y _ ''_---- / I III
,�i, _ AFTER REMOVAL OF CCR III11I III II 11 1
TL1A482 100kV � `-- I :
�+
s1 ASH ■ ■ I II TOWER 3
-ILL 2 ■'' I I( (SEE NOTE 7) ``/1 i - / ,-'--- ' ' 1 'III IN, III =
• • I -
♦ • � �� --\\ FUTURE STORMWATER
1/0 AV/ ' y ��„ \ \ ___ y `\ - MANAGEMENT AREA ' I I I' I I III I 1 c)
\ _ I I I I ,
O �� I I I ---a -{ �\ 1'�i, \ / I III I I I
/�\ 1 / `\ `_ \\ `> r' II • ■ I --�X\ ��\` `�� _ \ \� / I I IIII I I I i I I 1 c0 I _
I `L, \\ \ \\ -- RETIRED ASH BASIN IIII,11 1;11Ig
� ' ; 6 \ / 1 �\ , II —� _ � I ■ ♦ h l , I . \ \ \ , _�- --__ -` �� � � =
sp, / -- \\ r — \ ♦♦ (ASH �\ \ \ \�� - - '`� NORMAL POOL 615.5 FT. III11+1 I =
_-_ 1
---_ ��--- / r \T - ♦ \ ■ i / / � ,. _ �, RAB NORTH �-_� 1 III _
j J ,- \ , �\ / / w� �/' �� ♦ �� \\ ■ /FILL 1 \ ■ I \ ■■■..■�■■' i■■�■a■■, STORMWATER .��`�� \\ LL POOL 620.0 FT.
!' ' I ( \ , , i i l f1 / m♦� • — 1 \ \ w /I I / ■ I ��- CHANNEL \!�\ ■■it ■�fi� ■ ■■1 rl
/ � —� may,.
ILL ILL
TL 1 A606 (100kV)
_ TOWER 5 ■ I _ \ / _ _ - I ,1
�' • It o a (SEE NOTE 7) ■ ` i I /i /' �'' / '/' ■� I
/ `_-- ■ /_-
woo Lil
/� I / _ , \ ■ I �'- / / /, /i ,' /' �' / III I if I 1 I
■ I �- -� ' �\ ■ ■ _i''\ \ ■ I i' /lI 1 /--_.-�'' i / r' I I I I I
-------- / / �1 ■ I - I
NEM own
- _� /-------------' �' '^\ \ �I / ----- ■ ■ I -I i'' �/ /'/'/' '' // ♦_/ ' / / I II I1111 III
AS �Illill I.II.II I
\ / ,-'-------- '' .-' `\\�`\ xl'q'SJ3 - '---'' ■ ' III I /. ,-'';� AI BASIN I ANDFILL'
\ _\ ---- ____- \`___ -_-I�_ I — ''; Si-j.LANP'FILL PERMIT NW36-12, Jill11Il;l�l1
lb
1\ \ \\\ \ `` \\ \`_ �\ �} ■ I O rrl\ ■ j ■ \\`\� \ I I r
�__ � - _ . I ( \ . ! I . 1 _� , , / , �._ / �. 1 I ■� IIII I
■`� I I ■ I RAB SOUTH
`— a \
\ \ ---- --- r+�, I ■/ I STORMWATER
------ ___mot �\`� ■"�-_` \ \�\ --\ ■ ■ ��i \ �� ��_� _� t I I 11I I I I Ili
, I
\ �- _. \ t �, --- Y"�j `\ `�\ `\ \ ■ `��' I /_■ _I CHANNEL I tr=in n 1111111
a `--- FUTURE STORMWATER �- fir------ -% I o \\ \ \♦ -_\ \\ \ \ ■ Ir \ `■ inIII I 1
MANAGEMENT AREA r +�, \ \ ��.■r� `\ \ \ ,r - I� .I■ r-`\�• \ / !
♦♦- ■■V■��! ,III II
LOU
I \ _ \ ♦ _- 1 _ `-----___♦ ` ` ��\ ■ — — �� \ `�1�� 11 �-'� ,'/'' / / �, T , I I III I 1 I I
.\ \ - -625\ \ *!♦ `\ `� ---- ♦ ---- AREA TO BE BACKFILLED ,� ►I +1 I t it X
_ AFTER REMOVAL OF CCR
_ \
-------__ \\ , \ ` ----- (- �♦♦ ♦ ♦♦s♦`-- TL 1A482 (100kV) i••■■■ :■ _ _��--------- ' / �
1 1 \ i--------- \ \ ■ -\ l`� `` � ��\ ♦------,� - TOWER X =� == s -' '�` \ A, \-----�_�■��_ r=�_
O _ ■ I \```���` �\ \ \`� \�` //� I _-------- -- \ ______ _______ !'cor ilco�
,------------ -- 1 \ o Inook 1 Y640-_\, \ \ ----=__-_---- - H DIKE -
AAB NORTI' II'I ,
III , / J
TL 1A606 (100kV)
---_•= 1I III 1II_
TOWER6 1 1IIII II'IlII �rI1I ,rI1I�IIr __�_---
(SEE NOTE 7) o �/ iI7FUTURE STORMWATER
IIII
I ,1 \-/
I I I I I
/ TL 1 A482 (100kV) / MANAGEMENT AREA
m I/ i � / 1 I I I 1 ,� � / ;� •, i I 1625 I I
/ l _fir%I, 3 � 1 I I I I
1 ! W w / ! c / 1 / \� / I1 I I;I 1
00
W.S
,' , 3,' ,03
m /
O 04/17/1 1 II i1111
1l I 1• lit
I III II :. I If /,/// /'' I - _ /1 / I I IIII
.� SELL 3 I I II
44
9 O (I t , , 1 /J ; ; ,'^�'^' � - ,r � ; ' I I +1
O
r*1
1I
II1>3
10
w' SELL 2 I OCELL 1 N.S.E.- 1c)I ICo
l l�Il I Ii n'l 1I.p
O° 639.E
r
650 111I11
O 04/17/14
3
I
11
,
\
/
I
I
I
I
I
I
/
CONCEPTUAL DAM
BREACH GRADING
(SEE NOTE 1.3 IN
GENERAL NOTES,
DRAWING NO.
ALN_C999.001.012)
LAKE WYLIE/
CATAWBA RIVER
NORMAL W.S.E. 565.7 FT.
- 100-YEAR FLOOD
ELEVATION: 571.3 FT.
EMERGENCY SPILLWAY
(TO BE ABANDONED)
PERMITTED SPILLWAY
(TO BE ABANDONED)
NPDES OUTFALL
SWO15
625
PROPOSED MAJOR CONTOUR (25 FOOT)
PROPOSED MINOR CONTOUR (5 FOOT)
- - - - 625 - - - -
EXISTING MAJOR CONTOUR (25 FOOT)
EXISTING MINOR CONTOUR (5 FOOT)
DUKE ENERGY PROPERTY BOUNDARY
— —
APPROXIMATE LIMITS OF IMPOUNDED ASH
LIMITS OF EXISTING RAB LANDFILL LINER
ILL
APPROXIMATE ASH BASIN WASTE BOUNDARY
�•�•
LIMITS OF WATER
100-YR
100 YR FLOOD LINE
STORMWATER FLOW DIRECTION
0
Ain-rc: '
HATCH LEGEND
WETLAND (SEE NOTE 4)
POTENTIAL HABITAT - SCHWEINITZ'S
SUNFLOWER (SEE NOTE 3)
PROPOSED LANDFILL LOCATION
FUTURE STORMWATER MANAGEMENT AREA
1. LIMITS OF IMPOUNDED ASH ARE APPROXIMATE.
2. REFER TO SHEET ALN_C999.001.012 FOR REFERENCES.
3. POTENTIAL HABITAT FOR SCHWEINITZ'S SUNFLOWER WAS IDENTIFIED BY AMEC'S JUNE
24, 2015 NATURAL RESOURCES TECHNICAL REPORT. PRIOR TO LAND DISTURBANCE,
THE U.S. FISH AND WILDLIFE SERVICE MAY REQUIRE A BIOLOGICAL SURVEY OF THESE
AREAS.
4. POTENTIAL JURISDICTIONAL WATERS (STREAMS/WETLANDS) WERE IDENTIFIED BY
AMEC'S JUNE 24, 2015 NATURAL RESOURCES TECHNICAL REPORT AND SURVEYED BY
MCKIM & CREED IN FEBRUARY 2016. CONFIRMATION IS PENDING U.S. ARMY CORPS OF
ENGINEERS REVIEW.
5. WORK WITHIN THE 100-YEAR FLOODPLAIN ALONG THE SHORELINE OF THE CATAWBA
RIVER MAY REQUIRE PERMITTING.
6. STORMWATER CHANNEL GRADING IS NOT SHOWN ON THIS PLAN. CHANNEL LAYOUTS
HAVE BEEN CONSIDERED AT A CONCEPT LEVEL TO VERIFY ITS FEASIBILITY AND WILL BE
SHOWN AS PART OF FUTURE DETAILED DESIGN.
7. ASH SURROUNDING TRANSMISSION TOWERS TO REMAIN AND WILL BE CAPPED AS
SHOWN ON SHEETS 031 (TYPICAL PLAN AND PROFILE) AND 037 (DETAILS).
COAL YARD SUMP 0 200 400 600
DISCHARGE (ABANDONED) NOT FOR CONSTRUCTION
GRAPHIC SCALE (IN FEET)
LAKE WYLIE/
CATAWBA RIVER
NORMAL W.S.E.
565.7 FT.
100-YEAR FLOOD
ELEVATION: 571.3 FT.
/ I / I 1 I
I 1I1
CONCEPTUAL DAM BREACH
r l640.5r I II I 111 GRADING SEE NOTE 1.3 IN
III II 11
w g4/17/14 11 IIII „I 11 GENERAL NOTES, DRAWING0 o CONCEPTUAL ABLF FOOTPRINT
rI II
1
I -'- O r/ \ I I 1 ----- _^ \ \\ 1 I (SEE NOTE 1.2 IN GENERAL \� I I I I I I III I I I I I I I I I I 1 j yrl NO. ALN_C999.001.012)
,---------_\\ \\1 \ \\ \ \
NOTES, DRAWING NO
ALN_C999.001.012)
I--------, >
O rOTI
LLJ
0 INCHES 1 2 3 TENTHS 10 20 30 4 5 6 7 8
TITLE
FINAL CLOSURE GRADING
PLAN -RETIRED ASH BASIN
P"=com
ALLEN STEAM STATION
CCR SURFACE
IMPOUNDMENT CLOSURE PLAN DRAWINGS -
CBE
GASTON COUNTY, NORTH CAROLINA
N.C. ENGINEERING LICENSE NO.
F-0342
FOR
ISSUED FOR APPROVAL
SEAL
DUKE
SCALE: AS SHOWN
DES:
ANR
DWG TYPE:.DWG
DFTR:
JAB
ENERGY®
JOB
DATENO 07 - 31202020
ENGR :
J DM
FILENAME:
ALN_C999.001.025-026 FINAL GRADING PLAN.DWG
APPD:
JDM
DWG SIZE
DRAWING NO.
REVISION
ANSID
22.0"x34.0"
ALN C999.001 .025
B
9
10
z
CD
0
0
0
W

\ \`\ \ \� — ��`. -- --- - ■`\ �: ■ I RAB SOUTH
---------- _ -__ ■ \ \ Ir I ■ ( STORMWATER
~ \ \ -/` ■ _\ \ \\�, ■ ■ �_ ' ■ I CHANNEL
FUTURE STORMWATER �, �, o \\ \� . ■ I �' / //
MANAGEMENT AREA �� �� +/-_ \ \%: `\ \� \ \\ .'�_ ■ ■--------Itl
\`\ i' ••• `\ ``\ `\ \ \ ` `�—____ --- /=_\\ _ Jr_�� �. �. / / /'%„/ f/� 1,/� \\ \ ` „ 1—I ���1■■h J.
-- ' ----------
.LOW1 / \ \ — -625 \ • `• f---- \\ '/'' / AREA TO BE BACKFILLED
\ , \ \ I/,'••• `\ >. �`` TL 1A482 (10OkV) . AFTER REMOVAL OF CCR
8 ALN C999.001 .026 B
II,IIII —
I LEGEND
EMERGENCY SPILLWAY
(TO BE ABANDONED)
625 PROPOSED MAJOR CONTOUR (25 FOOT)
1'ilii I' I
! I'� PROPOSED MINOR CONTOUR (5 FOOT)
PERMITTED SPILLWAY
(TO BE ABANDONED)
yt •_----
- — — — EXISTING MAJOR CONTOUR 5 FOOT)
-----------\ ��\\\ ------.� - TO
X
------— — - 625 R (2 T)
r_ r ------ ------- _ --------
co Jr/ r / coo
o ■
\ /-------------------- -_ __--_--_-___� _ =625 _— / 1 r/ ( r /
\ 1 i \\ 1\ \1 \ \\ / �� ----- -----_ — -_ — — —
,_---------- - 1 \ 0 1 1 �640-.\ \ \ �� ,�.�'�/ / _ _ _ — —_ —---____- RTH DIKE _ — --------------- _----___ _ -� \\� III I
I \ \ \ Now _ — _ _-_-_-_- _--_ AAB NO _ ------ ----- ----- — — = �— - -- ---_ \� \ i I I I I I
____-____ _ _ r __—_— ___________\\1\ I'I ' I I II I f / 11
1 \ ' \�----- % ��' _-- /' J' �� _�-_,II/�-- _ _ _�-- _-- I�1I�I��1 �1�111 IlII ,
\ \ \ TOWER 6 \ I r---- / / / /.-■i �_-
/` W W I �' / // - /
(SEE NOTE 7) 00 ` \ \ i .r/ / , / ,�1= ___ - — .-- /--- I I I I I I I
1/ /--- /I_ �. i 1 1 I I I 11 11 FUTURE STORMWATER
II
`r //' ,-. I11 I,1 1,1 1111 III I,I I II,I ,
TL 1A482 (100kV) �/ % i,i1li1 I,Ii i MANAGEMENT AREA ' / ' ;i,1i11 I III , III
\ \_ \ � 1 m / % / I _ / 1� •1 I I 6 i I I I / I / I I I III I I
\ `• • 1 I I / , 3(A�i �_ / / / \ I I III �` , J / I, I I, I ,, I I I I ,
\ 1 m r Wc`I / / r-`----- '� I1j W.s,1111,1
\\1l —��1m
\--- rri
�///
o 04/17/14 I 1I, '
"�• '------- '/r \
rIIII
I I
/1
o I� rr' A
I . ELL 3
AL
o -SELL 2 i Ii \�\I \\ \\\ \III ;iiIO1I1Ii,iIiiII iII1II¢ I I iIIII
iII I�0 'I�O CELL 1 W.S.E.= 1 ,I�I I'1j
W 11 Cy
oo 639.E ilI�i JJco
50_i;16O If W.c:E04/17/1 A \\
jI,
�111I.3
03I,
it 1
NPDES OUTFALL EXISTING MINOR CONTOUR (5 FOOT)
SWO15
DUKE ENERGY PROPERTY BOUNDARY
APPROXIMATE LIMITS OF IMPOUNDED ASH
COAL YARD SUMP
DISCHARGE LL LIMITS OF EXISTING RAB LANDFILL LINER
(ABANDONED)
APPROXIMATE ASH BASIN WASTE BOUNDARY
LIMITS OF WATER
100-YR 100 YR FLOOD LINE
LAKE WYLIE/ — STORMWATER FLOW DIRECTION
CATAWBA RIVER
NORMAL W.S.E.
565.7 FT.
ELEVATION:
:571. HATCH LEGEND
ELEVATION: 571.3 FT.
t_•'' m W / �''-' / / /
o I f I '� ; I 40.5 ,'� \\t� l; i; I I 1 i' I I I i I' I I i i I I i i 11 CONCEPTUAL DAM BREACH
w /� I S I\`I I III III III I /' 11 GRADING SEE NOTE 1.3 IN
/ , \\I,III II I11 I,I I 11�111 11�
I� - 1 I ► Q4/17/14 `\\\\\\;,Till I�i,II ,1�I1I iII/' GENERAL NOTES, DRAWING
\ m I I I \ _\�` \ 1 ,/ \, l \\ 11I1111 � II; ; I I I I', W(/ - )
I I _ \ I I i III I I i 1 I , NO. ALN C999.001.012
\I I III I I I I I ((/
III I I I' I 1 1'Jill I II
I TIC
O p ------- I I \ �. I \
❑
❑ 1 / TL 1A606 100kV \ ' \ \\ \ \ \ \ `\ \ \ ► / 1 % I \ I 11'I111 w I I'
( ) 11 \ \ \ \ I II O I
Y_O I, III
II I I
\\ i �\\i ,il,i, o ;;
J / _--- _ \ \ \ /
p I / __------- TL 5N5 (500kV) '\ \ I \ ,1, \ / , \ 1 1 I I ,^--.il \ I Ill I I
/ _ - - 'II `\ \ \ �� ,�' i I i I I i �� • ` i ill ill ililiil
\ o uj
m \ `\ Oo \ \ , / /-' / �� / `\ I III \ 1111111 IIIJII
I \ I \ / / ,� CONCEPTUAL ABLF FOOTPRINT
/ / \ \ \ • I \ W ^\
ar(c i / �, \ 1 SEE NOTE 1.2 IN GENERAL �/ • \ ,,,, AL
-\ \ o \ \
\ I \ \� ` NOTES, DRAWING NO \ I I i i I
I t�� • I I I I I I, I I \
N. 0._ \ 1 / /' 1 / i I �� IJ\ II I I I
/ \\, \\ CHEMICAL \ \ ALN -C999.001.012) 1 I I/ ,IWJI II I,, Otn I
BUILDING \ / / /1
(REMOVED) - i / '�/ i L. \ .,� I ! // / I , I I I I, ,
\\ `\ W I I / ,/--�---- / I I // I III I 1 1 I \
I , 1 \� I / \ .\ \\ `- -- O I-- ; / ; / ; ' ; ; 1 I
1 \ \ \ �c5` O
c0 1 I 1 \ \ \ \ _ �') I 1 /,// /
1 0 / \ \ m / //
TL 2A10 \ _--- I 1 / ' �// /
(230kW
o --_ It �/
,II I I I
I'
\ ►► 1 1 ' W AL
\ 1 1 / � / I I 1 /� `�_ 'O' // / II//// �. ��----' / , , �• , l I I I \ ,I I I I I I I I 1
\ I 1 1 / , / 1 � 1 1 \ I \ \ �' / / / ►1I I 1 / / / � /' , �, I , , \ 111 1 � , I 1 1 1 1 I ' \\ \ \ I
I I \ � ■� ._ — / �� \ I , I I 1 III I I \ \ \ \
\ 11 III I I I \\\
/ I I I 11 I
I I ^ \ ♦ � / / / / \ I I I I I
--.�' , �- , / l ,-- �- i — �- / / ,- \ \ LI H I N � N,fD 11' I' I
o , �_�' / l , �. / �/- / // _ / / , \ 1 I I; 1; 11
AREA TO BE BACKFILLED - - - ' oo ,' ,'_J _ /i ��. I r
_,-00 - / / / ,' W.`7.�._
-------- --- - � / , / . / / 1 \ \ _
AFTER REMOVAL OF CCR `\ / \ ' `\ \ \ `�-- �-III' , I 1 I I I1
%l l 1 I I l l ♦ ` - \ / / i '' -_' / / r / ,/'l / /' -0�. J— — — / \ \\\�\ \ I I,; I, I I 1 I; I I I I , l
/ I \ I I I I 1
/ / �_---- --- I 11 1 1 1 \ I
/ � / \ % \� , \AGI
SIN
/ % /�/ \ //~\ \t I _ ` _ / r / , •_ i ( ' ' / i �'�� \ \ \ IIIj jI II 1 I ; I I /
/ / / / I II I
/ / L - 1 / /�'/ V V t71 _ , I I III I I I I I I 1
1 I�jT , 1111 III I I , 1 I I I rA
( //\\ \\\ \\ �� tJOWAL POOL 6a*.B -FT- .' ,/ i / ,A •� I I I I I 1
/ I I \ I I i .' - _/' /.' .''/ -' �� `F 9 11, 1, 11, 1, 11 I I I I I 1 f 1 1 11
100-YEAR FLOOD
ELEVATION: 571.3 FT.
/� 1` / '�' ' ' I ' I I I I I I I i I I ` CONCEPTUAL DAM BREACH AREA
\_�
// I\\ ,.� 1\ �� 11 III' I I I i t;I i; l 1 I I i I I I �+ (SEE NOTE 1.3 IN GENERAL NOTES,
I \ `�� _ ` ' -v+� \ _ 5c / 1 / �!' / / . , / / _ — _ yam' / �re�•�}^ : I I 1 1 1 1 1 I 1 I
DRAWING NO. ALN C999.001.012
' / / / / / / // / Ill v 1 ---- _\�`\ \ _� / \ —� / ' / ' / /'' \ J / _ �.,_— '' �� \♦ i'' _— _ \�� _�' y -- —
/ 4..I I I,jAFI I I III I I I I
A, �\ `—V�t� 1�r� \ % c / At arc arc
` � �-
/ j /�/ ` �' `\ \\ \ _ \`\ \ — �_ / ---- ',/ ' —�� ✓ / — �__ — J i//% �— —\ �— I I I I 1 I JJJ i I i I I O I
1_ � FUTURE STORMWATER J
' 1 ` ` \ II �• \� _ ', � '� / ' �.'
' ' ' MANAGEMENT AREA — `\
// / �_\ =�, - \ \\ \ -\ I , I III III 1 I
/
1 — — — — ____--- `\_I I, 1 I 1 I
AL ` _ aQ- _ ' I aic i' / r' � __��-� � \ I 1 ,/ / 1 AL AL /' .,gc �— AL
= AAB SOUTH -- �J' _ I - / \ I 'ri r 11
-- �� / - _/ I ����-' ��'-\ 1 �I / / I /--�� _/'' / �� �_ -' � � a I I' I 1 I I, I III I I I
STORMWATER - r AAB SOUTH �' \` 1 I / / ' --- - AREA TO BE BACKFILLED _ _____� III I I I I I / w
�A' -'/ \ I I \ / / ,� .- �\ 1 1111 I 1 , I I, I III I I — O I
I•U� �. /� .� _ CHANNEL . ` ------ `\ --�\ 1\ i .-`\� 1 ► 1 \ / AFTER REMOVAL OF CCR _ --- �\ \� I I I I 1
\ \ \ . \ / . \ \ I I
STORMWATER _- \\11'I I / -- - `\ ,1 1I I, II t III I
l I // ��\���_ — — — \ \ 1 11\ i / �/ i --- \\ \ \ III, I I I' I III I , , I
_ � / / 1 11 \ J / I I \
\ \ I CHANNEL �' . 1 I f ' , / � ��------- `
1 /• ' \_r-- ----_ --_-\AL--_ ` ::i — _ -' / I A CHEMICAL "
c/ I 639 / r r �`` \ \ \ \�__ /" / ' I / IIAL 'BUILDING,/ ,'� '�'—`�� EXISTING 1
/ �� 4 �/ \ - II /
�- , / / / WTS PAD
LAKE WYLIE/
CATAWBA
RIVER
NORMAL
W.S.E. 565.7
FT.
\ // I _ _ REMOVED 1 \ NPDES
I / / l �� \ / . --------------- .' --_-_ OUTFACE 002
o o _-\ — /-------------''''/� PERMITTED SPILLWAY
n V / h ► Sp o _ --_\\ --- \\ r I / I / /. ,, ,.',, — .,// / \ \ `\ (TO BE ABANDONED)
AL AL / sic / �Illc Ac
/ / \ o / \ I
\ \ \ , / I / //i / ,� I �\ I ,' JURISDICTIONAL STREAM
Ae
Q / `. / \ \ \ \ I 1 I ,' �_--\
CONCEPTUAL INITIAL LANDFILL
/ �r,t, I / / `\ \ er \�\ __� - j I 1 i / � / FOOTPRINT/GRADING (SEE NOTE
7\ \ \ \\ J // l /i 1.2 IN GENERAL NOTES, DRAWING
; A �.i \\ i \\ /__� �`\ \\\ \\; \\ \ / i i i ( // NO ALN_C999.001.012)
If
\1 ell
/
\ oor
1 / /
','/' JURISDICTIONAL STREAM
0
NIOTP:-q
WETLAND (SEE NOTE 4)
POTENTIAL HABITAT - SCHWEINITZ'S
SUNFLOWER (SEE NOTE 3)
PROPOSED AAB LANDFILL LOCATION
FUTURE STORMWATER MANAGEMENT AREA
1. LIMITS OF IMPOUNDED ASH ARE APPROXIMATE.
2. REFER TO SHEET ALN_C999.001.012 FOR REFERENCES.
3. POTENTIAL HABITAT FOR SCHWEINITZ'S SUNFLOWER WAS IDENTIFIED BY AMEC'S JUNE
24, 2015 NATURAL RESOURCES TECHNICAL REPORT. PRIOR TO LAND DISTURBANCE,
THE U.S. FISH AND WILDLIFE SERVICE MAY REQUIRE A BIOLOGICAL SURVEY OF THESE
AREAS.
4. POTENTIAL JURISDICTIONAL WATERS (STREAMS/WETLANDS) WERE IDENTIFIED BY
AMEC'S JUNE 24, 2015 NATURAL RESOURCES TECHNICAL REPORT AND SURVEYED BY
MCKIM & CREED IN FEBRUARY 2016. CONFIRMATION IS PENDING U.S. ARMY CORPS OF
ENGINEERS REVIEW.
5. WORK WITHIN THE 100-YEAR FLOODPLAIN ALONG THE SHORELINE OF THE CATAWBA
N RIVER MAY REQUIRE PERMITTING.
6. STORMWATER CHANNEL GRADING IS NOT SHOWN ON THIS PLAN. CHANNEL LAYOUTS
HAVE BEEN CONSIDERED AT A CONCEPT LEVEL TO VERIFY ITS FEASIBILITY AND WILL BE
SHOWN AS PART OF FUTURE DETAILED DESIGN.
7. ASH SURROUNDING TRANSMISSION TOWERS TO REMAIN AND WILL BE CAPPED AS
SHOWN ON SHEETS 031 (TYPICAL PLAN AND PROFILE) AND 037 (DETAILS).
0 200 400
600
NOT FOR CONSTRUCTION
GRAPHIC SCALE
(IN FEET)
TITLE
FINAL CLOSURE GRADING
PLAN -ACTIVE ASH BASIN
P"=com
ALLEN STEAM STATION
CCR SURFACE
IMPOUNDMENT CLOSURE PLAN DRAWINGS -
CBE
GASTON COUNTY, NORTH CAROLINA
N.C. ENGINEERING LICENSE NO.
F-0342
FOR
ISSUED FOR APPROVAL
SEAL
DUKEDWG
SCALE: AS SHOWN
DES:
ANR
TYPE:. DWG
DFTR:
JAB
�•
ENERGY®
JOB NO: 60603204
CHKD:
JDM
DATE: 07-31 -2020
ENGR:
JDM
FILENAME:
ALN_C999.001.025-026 FINAL GRADING PLAN.DWG
APPD:
JDM
DWG SIZE
DRAWING NO.
REVISION
ANSID
22.0"x34.0"
ALN C999.001.026
—
B
Z
r
co
INCHES 1 2 5 ITENTHS 10 20 30
1

N.
WW N`�'��
` `�/ �\ r\ ; `\` "/ tom► - EN RD .
PLANT ALL OE �' -- ALLEN STEAM STATION I► i �/ /�i/ �I/�I-, gill /? \ 1
�\ / - -- _ It 1 ' III it \\\ \ \
.� ` r _ / COAL YARD
III it
IIIIII I
LINED
TL 1A606 (100kV) �' / / `� HOLDING\�\ I
__- - TOWER 4 _ % / r�\�► `\ ) \ ,l \I \ fyr�ji l i li�� i 1 i it BASIN
- `{'� _I`I �t�- -625_- (SEE NOTE 9) \\ i �I \\
v _
` ��`\
------- '�/ ,-- = �� \\\\ ��� \\\ \\'� 1 \\��
cn /cry// // O - _ - - —60 \ \ \ \ \ \ _ _
1 / / / Lf7 /1 0� \ \\\ \ ` \\ \
co co/ // co �, TL 5N5 (500kV) - — \ \ \ \ \\ \\ r — _ c . �,
/ ( / / \ \ - \ �`i �{� ��, C�.'�► AREA TO BE
! // TOWER 67 -,�\ \ \ \ \ \\ \ \ \\\ \\\\\. �. ��}�---� h-
/ (SEE NOTE 9) \�� - \ ` \\\ \ \\ RETIRED ASH BASIN DIKE =- — — —= _��� I BACKFILLED AFTER
__ ``
(GASTO-016)___ _�\ c REMOVAL OF CCR
I III / TL 2A10 (230kV) \ \ \` \ \ ► \ \ \ \\ `\ ,/ I ------ / — — — — — — — — — =`\\�
CONCEPTUAL NSLF FOOTPRINT \\\� 11 \ �` \ `--- `
TOWER 4 \ \ \ \\\ \ \ \.,\ `� \ r \\__---- -- �/ �--_________=
(SEE NOTE 1.2 IN GENERAL I 1 00 \ \ \\\\\ \- — / 1 _ / ��'�,'------- — � \\`\ \\\ \�
(SEE NOTE 9) / S 1 II\ \ \ \\\ ,_�,\\` — _ — ' / /r�`�i\ii►1 \ills \I I\ II p:
NOTES, DRAWING NO r w / 1 II\� \\ \\\ `�, _ FUTURE STORMWATER ' / f I 1 1 CONCEPTUAL DAM BREACH AREA
1 \ I I / O / I 1 III \\�\\� -�- --- - / IIIIII III 1I11111
\ - 1 I // ALN_C999.001.012) I w O ► II \\ \ `�; - MANAGEMENT AREA / ,IIIIIII III II (SEE NOTE 1.3 IN GENERAL NOTES,
----- I
O -•'� `/ / 111 II W \ - )
Illi it of DRAWING NO. ALN C999.001.012
/ N. 1\� � o � I� w i TL 1A482 (100kV)IIII I col
,\ �_' / 650- r.• IX)O TOWER 3 li\ - \ �' �Iliiii III �11;1
(SEE NOTE 9) \ \ ,
\
I - _--- TL 1A606 (100kV) °_/ \` �_ LAKE WYLIE/
\ / TOWER 5 ,' RAB NORTH - `\ �\ i I I ` CATAWBA RIVER
---- - _ - — — - \ \ / i // / NORMAL W.S.E. 565.7 FT.
I ----'� .'/�/ /--- L1 — (SEE NOTE 9) _ �.� _ _ .� STORMWATER
--- --- CHANNEL
/ 1 1 , ' / _ �• �_- . / IIII , / . / I'
t------ I
\ f I /--'/ �/� �\ / /� __W l �\�-\ �,/ ��O�,�i/ \�/ i' / 1 IIII 111IJu�llli� I 1 /--------- �� / \ / „� 4J/ /
\\ \\��� CD
- --_ / �' ��:'� / . iC) c\I lo, I LAKE WYLIE
\ 1\ �•r'- _------ ,/ _ ` ` _ — ----' --- --- �•,' �/ / / / I co I I co'Cfl1 100-YEAR FLOOD
- /,� ; ��/ III Iiil illilir 1 I ELEVATION: 571.3 FT.
�`�-1 s W / - _ __ _ .
O \ \ 1 \ \ \ / � �\ RAB SOUTH
\ \ \ \ \�`, \` `� \ -\ _ STORMWATER j /.'�
3 \ \ W \
CHANNEL // •� =_ '.� ill IIII liilli�
EMERGENCY SPILLWAY
\ \ _---'�/---- ` ` '/ - - I li III II III TO BE ABANDONED
- ' - AREA TO BE BACKFILLED 1 1111 IIIII I ( )
FUTURE STORMWATER' __- / \ \\ --- �_� � _ - 1/, ,-__-- .
_ _ _ I
I 1 -� / -L;1\ ` /:,�� `: \��`-____� �` \_,. /// �.' _--- `\\ AFTER REMOVAL OF CCR ii lili�llill
MANAGEMENT AREA \ /`
\ -
w C I� IIII Ilrlll
-N I I I
-` O\ — \11 - TL 1A482 (IOOkV)�� \ ��, FUTURE STORMWATER \ �`\ _ // ICI II PERMITTED SPILLWAY
\w --- lit%---`\ --- -_-" ------ i[ TO BE ABANDONED
I _ i .--- - / \ � TOWER X ` MANAGEMENT AREA �` ( )
\\_�� NPDES
___ . %' I�� rl ca�� i OUTFACE
DSO��jso NORTH
DIKE ____ __ �= 625�= `\\t' IIIII iiili� i SW015
1 n
TL 1A606 100kV _ _
TOWER 6 \ I-� -~\ , /// , _____ _ _ _-- -__�__ _ _ IIIIII III Iljr- % I / ,' I I�Illli I jll 1
\ \ \ \ \ r j — — — - 'r �• I III IIIII II / IIII I III( �I I I DO CHARGE AL YARD SUMP
(SEE NOTE 9) ,\ \ �� lIr II \ III III III / , ,• IIIII I I'
I \ . III / Jill
II II / / I 1
- / \ \ , II II TL 1A482 (100kV) / \ I I.II 1
1 \_ `� , / / - ' r / 1 1 II 625 III 1 I��I IIII I� (ABANDONED)
l\ \ \ ♦__J
AAB TO RAB � / �€
\ / _ STORMWATER , ,
' '�
\ CHANNEL
���/ O / // Ljj
.k-1
\ 11 \ \1 IIII IIII , / �� , I �- I111,
I / \ I IIIII I I
`CNINI IN ilo f ( CONCEPTUAL DAM BREACH AREA
^\ / i CO C° i,co ii`oi (SEE NOTE 1.3 IN GENERAL NOTES,
� 1 / 65Q / 1 J I I Ilil hill 11,111
-' - / ' 1 1111 111111 DRAWING NO. ALN_C999.001.012)
IIIII 11�I1I
W / \ _ r I 1 111111 I ll l Illl I III .I i t
�EMCHICAL - i 1i II111 ilillll�
°� \'0---'------ - BUILDINGo0o, ------, II ii�li iil
9 (REMOVED)
•, \ \ I IIIII 11�1111
\\ I �iiili IIIIIII I LAKE WYLIE/
--- TL 1A606 _ \ I IIII Ill Ill CATAWBA RIVER
(100kV) ] 1 \ i I I �\ I i IIIII IIIIIII NORMAL W.S.E.
565.7 FT.
TL 5N5 \�-� I o 1
I N. i i i i \\ I\ .-� \ \ \\ (500kV) \o / CONCEPTUAL ABLF FOOTPRINT ; I I N 1 i co I
1 h ►+) I I I 1 � \ \ / \ 6'S \ � 75� (SEE NOTE 1.2 IN GENERAL I(I-/
/\ G I 1 I 1 t3� \ / \ 16 7 I _ 111 1, 1
I , NOTES, DRAWING NO I w � IIII ,
TL 2A10 I // 1 / 50 % ALN_C999.001.012) 11� - - 11111
\
(230kV) /f/�25 I IIII co o I'
/ \I i I i 1► r� / 1\ I\\\ J 1� \_ l Ni 1 I 11 I uQ-1 U' 1 i I
101 a
`\ AAB WEST ' / ! 111 lil�lllli ilill'I
/ g�5 11 I jl1 1 Illl, 1111� \\ \\��
\ I AREA TO BE BACKFILLED - \
AFTER REMOVAL OF CCR STORMWATER , `
CHANNEL j
Ji
ll
/ r �I1
�\ w r� 1 ,' .6 '�r /' ' '/ '~'-� ``\-)\\��
—1 I(-\ f / T / 1 1 II� I II I I 1 IIII
--_N ,
FUTURE STORMWATER \��� I1 1 O
1 , / •,�- MANAGEMENT AREA _ \\ � \\ _ J IIII i n
\ \ -. lid IIII IIII
_/ _ ` \\\ --- . -�\\\ . 1111111 IIII
LAKE WYLIE 100-YEAR FLOOD
ELEVATION: 571.3 FT.
JURISDICTIONAL STREAM
�- �i' r �\ v� l ,/ AREA TO BE BACKFILLED = _ III IIII I I
J`\,_. 11 / / I / - 1111111 I I I I IIIII CONCEPTUAL DAM BREACH AREA
\1 \ 5,1 ,_, EXISTING AFTER REMOVAL OF CCR =\ \, 1111 II Ill r I MW (SEE NOTE 1.3 IN GENERAL NOTES,
\ . 1 I 1 / . . - \
\ II I III I I I
\\ I1 . �'; / _ / . \11II\, 1 . / WTS PAD �. . -�\ `\ \ \Iii11111 I IIII '\� DRAWING NO. ALN C999.001.012)
-\\\\� `=-_-�- -. III I / CHEMICAL / / _` `\
1 1 I 1� ----_= - AAB SOUTH / / \_��
AAB SOUTH �/` / `_ --_-_ ----\ ; \11 /i //' BUILDING - � / ,/h /1
STORMWATER (REMOVED) -' 1�--------_" / (8 I 1 \ NPDES OUTFALL 002
STORMWATER \ _ _ --• 1 I 1 / / / /
/ 6S - CHANNEL 1 / I // /i/ I
r I co CHANNEL , _ \ ` -- \ _ l /' / c'k t .7'''� X PERMITTED SPILLWAY
\\ 1 II\\ \ (TO BE ABANDONED)
I \ I \\`-- 8 /'-, /�/ `\\ \ \�� __ �' — \ 1 /--`\_\\ \\ \ \\ \ \\ \\ I I r/11�/� IIII /// '/, / ' _ \t_
co
lb
CONCEPTUAL SSLF FOOTPRINT
\\N `\\ 700` (SEE NOTE 1.2 IN GENERAL
NOTES, DRAWING NO
675T ALN C999.001.012)
NN
\\ \` \ \\ \\ I I / IJr%i _� 11 JURISDICTIONAL STREAM
/ \\ -\ ♦\ \ \\ \ \ \ / 1 �- -\\ \ \ \
��S \\\ \I N I I I I p� _,\
INCHES 1 2 3 TENTHS 10 20 30
JURISDICTIONAL STREAM
ALN C999.001.027 wv. B
LEGEND
625 PROPOSED MAJOR CONTOUR (25 FOOT)
PROPOSED MINOR CONTOUR (5 FOOT)
EXISTING MAJOR CONTOUR (25 FOOT)
EXISTING MINOR CONTOUR (5 FOOT)
DUKE ENERGY PROPERTY BOUNDARY
APPROXIMATE LIMITS OF IMPOUNDED ASH
LL LIMITS OF EXISTING RAB LANDFILL LINER
APPROXIMATE ASH BASIN WASTE BOUNDARY
LIMITS OF WATER
100-YR 100 YR FLOOD LINE
—�o- —�o- — STORMWATER FLOW DIRECTION
HATCH LEGEND
WETLAND (SEE NOTE 4)
POTENTIAL HABITAT - SCHWEINITZ'S
SUNFLOWER (SEE NOTE 3)
FUTURE STORMWATER MANAGEMENT AREA
w r A -%Tr e1%
1. LIMITS OF IMPOUNDED ASH ARE APPROXIMATE.
2. REFER TO SHEET ALN_C999.001.012 FOR REFERENCES.
3. POTENTIAL HABITAT FOR SCHWEINITZ'S SUNFLOWER WAS IDENTIFIED BY AMEC'S JUNE
24, 2015 NATURAL RESOURCES TECHNICAL REPORT. PRIOR TO LAND DISTURBANCE,
THE U.S. FISH AND WILDLIFE SERVICE MAY REQUIRE A BIOLOGICAL SURVEY OF THESE
AREAS.
4. POTENTIAL JURISDICTIONAL WATERS (STREAMS/WETLANDS) WERE IDENTIFIED BY
AMEC'S JUNE 24, 2015 NATURAL RESOURCES TECHNICAL REPORT AND SURVEYED BY
MCKIM & CREED IN FEBRUARY 2016. CONFIRMATION IS PENDING U.S. ARMY CORPS OF
ENGINEERS REVIEW.
5. WORK WITHIN THE 100-YEAR FLOODPLAIN ALONG THE SHORELINE OF THE CATAWBA
RIVER MAY REQUIRE PERMITTING.
6. EXISTING TRUCK WASH AND SCALES TO THE NORTH OF ASH FILL 1 MAY NOT BE
LOCATED WITHIN THE ASH BASIN LIMITS SHOWN ON THE DRAWINGS. THIS WILL NEED
TO BE VERIFIED PRIOR TO CONSTRUCTION.
7. THE INTENT IN BREACHING THE RAB AND AAB DIKES IS TO REMOVE THE DIKES FROM
REGULATION AS DAMS. THIS WILL BE ACCOMPLISHED BY PERFORMING A FULL LOCAL
BREACH, I.E. TO REMOVE A PORTION OF THE DIKE COMPLETELY DOWN TO NATIVE
N GROUND AT ITS LOWEST POINT SUCH THAT THE DIKE WILL NOT IMPOUND WATER OR
CCR MATERIAL. A SEPARATE NEW BERM WILL BE BUILT AROUND THE FUTURE
STORMWATER MANAGEMENT AREA FOR LONG-TERM STORMWATER TREATMENT.
8. STORMWATER CHANNEL GRADING IS NOT SHOWN ON THIS PLAN. CHANNEL LAYOUTS
HAVE BEEN CONSIDERED AT A CONCEPT LEVEL TO VERIFY ITS FEASIBILITY AND WILL BE
SHOWN AS PART OF FUTURE DETAILED DESIGN.
9. ASH SURROUNDING TRANSMISSION TOWERS TO REMAIN AND WILL BE CAPPED AS
SHOWN ON SHEETS 031 (TYPICAL PLAN AND PROFILE) AND 037 (DETAILS).
0 300 600 900
NOT FOR CONSTRUCTION
GRAPHIC SCALE (IN FEET)
TITLE
FINAL SURFACE WATER MANAGEMENT
PLAN
ALLEN STEAM STATION
CCR SURFACE IMPOUNDMENT CLOSURE PLAN DRAWINGS - CBE
GASTON COUNTY, NORTH CAROLINA
N.C. ENGINEERING LICENSE NO. FOR F-0342 ISSUED FOR APPROVAL
SEAL ^ SCALE: AS SHOWN DES: ANR
r DUKE DWG TYPE:. DWG DFTR: JAB
JOB NO: 60603204 CHKD: JDM
ENERGY® DATE: 07-31 -2020 ENGR: JDM
FILENAME:ALN-C999.001.027 SURFACE WATER MANAGEMENT PLAN.1AND: JDM
DWG SIZE DRAWING NO. REVISION
ANSI 22.0"x34.0" ALN C999.001.027 g
—
9 10
1 1
z
CD
CD
0
N
v
co0

ALN C999.001.028
Fay. g
INCHES
/ �- /
\` \\ / 30 - 3 ' / 30' ' /Ila
/\\ \\.
\\\- , ''^�\ ��r•+�ice^\ r L „/
/ ---\ --- \ — r*r\ — : '/ "\ ALLEN STEAM STATION �, �—ter, � iln li �Yr � `
--- -- -- - U=M _ / -� I \,/ % 7 It �. 1• loll /.I y
--- J Nam.. `�� \� \\\ / �l` II \
I / I ` COAL YARD
/ \ \ I I \ �`__ I / ♦� \ 1 I \ \ 111 lam\ �_ �� /// elli 1 Jill
� _� \l \I\ „
\/O O �.--��� \\-�-~\\ \ \\\ , / ) \\ \ \ 1 \ \ t ll l 111 �l/� 111 I I
ill 111
f' mm__ - /� i �� \ v ` \\ \ (\ \ r \\ / z,�✓s,,,z, ntNr I l ilif j �1 `.1\
/ I-- - - --%/ �� - \ \\_♦ ` �, -\ `�. \\ / \\
LINED
t \ \ ( / III - / Ili
` �'J` I 11f- HOLDING
,S•Tfif�.4G \ \ \ -; 1 \\ \ d -► 1 11 \
'� BASIN � \
\ 1 I 11- II `-a • \\ \ \\ \NN c
031 CI j I `I \\\\\ \ \ I\` \`\ `"_------
\ ► 1 / \ 031 / \\\\ \`� _ lL-_-_ ` `\ \I \I LAKE WYLIE/ CATAWBA
° / i o � I II / om Ii / '� i /' ►i1\\\V\\ �`_ ✓G' --:--= _� _ �,.'' /r •' hill IIII 1;ill,l RIVER
�'I`�'- 1 I I s ASH I I it `� ,i - - '',, / /1111111 111, iiillii NORMAL W.S.E. 565.7 FT
0 300 600 900
GRAPHIC SCALE (IN FEET)
FILL 2 I I I j 1 \\ `t-
lit I 1 \\\ `\ ----- -- - ,/ II IIII IIII IIII III
I N �`--i-,z:1\. _ IIIII II III I, I
1 I `� \` ` ``- -. `\ RAT-IRED ASH BASIN ,' r IIII IIIII Ill�lll
�� _/ \ `� l I ♦ ASH \ I I \ \`I\`�� — \ \ ��NORMAL POOL 615.5 FT. _��' IIII111 ,I Illl I, I
I ♦ / ♦ / \ 1 I` I Ill, i -�� �. Illlll�ll�,ll11111 1 I
/ -- FILL 1 I OOL 620.0 FT.
1 / \ ♦ /i' r ♦' ( 1 ,� � � j ' \ I � �� � \�►.-�.�..�.'-`i�r�� / •���'l�l�}i '� IIII II
L-
L � LL\ �`��_=_ � ,.II ,IIII A' LEGEND
/``
'-- f �A �o
029
25 PROPOSED MAJOR CONTOUR (25 FOOT)�,
I I rT
/ II 11 i\ / I JIl/ , i I rr\-� --�' /\ /_�__' --- '.�-- �______ __ -' �;/ �' .- \,\•\l___-y�I%I:OI�7�9-\R\A— _�'- / ' ;``� _-II' tI-\'' ��'�1 \' `lI iIII III CI /'' � _' _,/_
�.`\ 11I I
ti�1' I
II 620
PROPOSED MINOR CONTOUR (5 FOOT )
r
A 620 EXISTING MAJOR CONTOUR 25 FOOT
------ --- �•I I
'NDIL'i L�!EXISTING MINOR CONTOUR (5 FOOT)
BASIN Lo
oB
n\ #--- ILL PERMIT NJ.36-12
to
DUKE ENERGY PROPERTY BOUNDARY
APPROXIMATE LIMITS OF IMPOUNDED ASH
—�-�\`\ \`=
ASH STORAGE BOUNDARY
^\ Ill," \ �N
1
����'1�\~y��y�� 1 —jl jl� IIIIII
-__-- \ f,l \ \ ��---- ,``, I -- I I, l 100-YR 100 YR FLOOD LINE
J - _ t J _ J �-_-_______ , / // _____ PROPOSED UNPAVED ROADS
? I __
\
`--i i / y / _ __ _ _ _ — — — - — _ _ - - - - _ _ _-��'jilli i (i 11 s //rJ
/ _ \ _ \ \ \ X - - _- _ T _- - _ I / APPROXIMATE ASH BASIN WASTE BOUNDARY
\ \ J O I--�\ \ ^, _ ""
\ :_� _ \
\
\ N\
\ 1 \ `.•f / , , \ III III 1 I .' /-, Illllii IIIIIIII �' % �i iiiliiiil I ii�li IIII '
! I n !' / % \�1 I I I I III I .' I / III IIIII IIIII III
/
\ I 11 / IIIII I I
I 1 // W. E. ' ' . l / \ f •r\ II I I II III
1 \ `\ Fri \ /� �% , E l I \ I III IIII II I E�
l \ ,`-- -' `n ---- ' / ' "' 36.1 // I 033 / ' I 033
NOTES
``� ' ,/'O O/ I,�/,' ,/' ' Ili �� / r r I1111111111 I Ilj I I I j
// ,i _ / j 11111 IIIII Ilj l l I j 1 I
ELL 3 11 \\\ 11111111 �III�hIIII1iI 1Il1 ,iII ilIIIiI IIII
II
0\ 1t
PROPERTY BOUNDARY
1.O IMPROVE CLARITY, ONLY 5-FOOT CONTOURS ARE SHOWN ON THIS
If T.
w
O I I _ ---� IIIIII111 lillill �1
to
II
❑ I , ❑ �_ �' 1 � � I Cfl Ilo�� I�,
.I _ �Z7.� �liil inl� IIIIII I .
\ \\ I 11�,11 I III ll
1 '. `\ \ i \ �`' I \ \.� - BOO lil' Iiili IIIIII I.
�1 , I j I ( • i \ -_�_ \wo \ I \ It illll 1j111
. \ I i 1 11 Bill IIj I I
l ~ \ \\ \
\ I I 1 \ \ c
/ 1 i 1 ► \ \\ I \\ \ `\ `----� 1 1�5 11 Bill IIIII I 1I
I I\\
If
r `
650
\`N`''
\ 5--
`-------- ( IA 650
`\�,'
;a__-' \ / ,tr' rot')
^' g25 -\ / / �_/l BASIN / / 'dl�'' �''�` �.� \ •_�tl I I I III I I I IIII
`� `.` I `I�IDR1(AL PO 654�81`r- ,// i ��� W.SII.= IIIjlljjlll III �I�III
- 'i' i'
1 \ / / / /',�--' _ � � — �/' ,�' l /1411711 111111111111 IIII IIIIIIII /
�FITC[P9II 9c6-FT.-- �
nA
Iryi I \ \ / I / / •/ice // \ / / /\ ) �`I I I I I I
\=,�IIE`\ ,i i ` \IIII IIIIIIII I 11 III II 032 1
/% / '/% / /1_ -`, `\ `\` --_ `C}- �� / \ �� /i /' / ♦ ,^ ��� �`:�/'III III
�� \\\`
`\� �I III II II I III Irlj
\l j
\ �� Ill ll 1 1 IIII I I I I
\\ \\ __�� -__/ I / /_- -_ /,/, ----_ � \ \,�\\�= IIIII I,ll Il III ,ll Illl I
I \N �� _ `` \` 1 _ ' / / - ��\__/ �' j — \ \ \ I IIIIIIII it II I II I I
'J ``\� �� '� ' ' `.� ` `I 1._ -�\� III I I Ill I 11 III I \
`_- \_=_-�- JI111i1 IIII Ijlljll I
It
I \ /,' ----�r�� �1 \-'' `111�/ / \ /mac �/ - �_ — It Ill III IIIIII / I
I I�.�i'' -�` \�__ _�\ --- -- _ \ -� \ 1 \ / .----- / ~ \Ill \\ \ / / ' ,/-� \ �I o IIIII J-
I 1 1 I ' '' '625 — �p®` \ I I \� %/,�-----' ' ,'' 1�� it i i' /,' ��------\ \ ,\
65' f/ ,J �� ; \\ NOT FOR CONSTRUCTION
0-2 - \ `•� �`�� __ ► Ill/ I lit
It\
1\1\ `\ \�` `\ r - _'i I `. ��.`�\\\\\\� //� / /'u� �� \ \\ TITLE
/ ^`� \ _ \ \ I , , I l I 1 \ LAKE WYLIE/ CATAWBA
\\ \ _ - - , ,_----_ \\`N N `\ ` 1 %I 1 / , \ 1 / \ ` RIVER
\ � _ _ \\\ \ � ,,I; ,�,; ,. ,/' / ,;\\ FINAL CLOSURE GRADING CROSS
_ - w- i - N\- \\\\ \ \ 11 II I ,Il // / ,' / / ��600- 1 ,. I NORMAL W.S.E. 565.7 FT
SECTION LAYOUT PLAN
/'' ► l - �- / f' \y'\\\\ i \\� i /��i i i l/ i i i / ALLEN STEAM STATION
' " "' �� I 1 ' =coCCR SURFACE IMPOUNDMENT CLOSURE PLAN DRAWINGSL - CBE
o`" ,'6 \ I 1 `,�\\ \`\� -- / ' I ' ' '� ' ; GASTON COUNTY,Ile If
NORTH CAROLINA
\ \ `--- / \ \\ \\` / j ,'--- �i cD�' l i I �--' /' N.C. ENGINEERINGF0342LICENSE NO. FOR
1 \I �� ISSUED FOR APPROVAL
\ \ \ \
\ SCALE: AS SHOWN DES: ANR
700 SEAL
S r / DUKE
�`��_ � ` DWG TYPE:. DWG DFTR: JAB
\ - - - / 675 1 �\ I
\ ��'JOB NO: 60603204 CHKD: JDM
/ , ► 650 ENERGY®
[DATE. 07-31 -2020 ENGR: JDM
\6251 , / , \ _ ��`\ N` FILENAME: ALN_C999,001,028 036 FINAL GRADING CROSS SECTIONS,DWG APPD: JDM
\ \ \ \`\ \ / / r \ 1 I I DWG SIZE DRAWING NO. REVISION
\\ ��� �`� `� \ `\ \\ I 1 \; \ , \ �_ \_i-, \ \ j % ANSI D
\\\\ \\:\.\ \\,` ► __'' \\\\ 22.0"x34.0" ALN 999.001 .028 6
3 TENTHS 10 20 30 4 8 ' ; 8 9 1�0
z
CD
CD
CD
•
0
W

ALN C999.001 .029
mv. g
750
740
730
720
710
700
.••
.:•
670
.a
650
640
630
620
610
m
590
580
570
z19,
O O O 0 0 0 0 O O O O 0 0 0 0 0 o O O 0 0 0
O o O 0 0 0 0 O O O O 0 O O O O O O O 0 0 0
O N M It u7 c0 r- co cy) O N
r
INCHES 1 2 3 ITENTHS 10
w�����V
►�M�M�1* M�1*�
LEGEND
EXISTING GRADES
HISTORICAL GRADE (BOTTOM OF CCR MATERIAL)
PROPOSED FINAL GRADES
PROPOSED SOIL FILL
PROPOSED ASH FILL
PRE -DECANTING GROUNDWATER
FREE WATER PRIOR TO DECANTING
ninTrc
1. BASIS OF BEARINGS: NC GRID NAD83/2011. ELEVATIONS ARE BASED ON NAVD88.
2. THE INTENT IN BREACHING THE RAB AND AAB DIKES IS TO REMOVE THE DIKES FROM REGULATION AS
DAMS. THIS WILL BE ACCOMPLISHED BY PERFORMING A FULL LOCAL BREACH, I.E. TO REMOVE A PORTION
OF THE DIKE COMPLETELY DOWN TO NATIVE GROUND AT ITS LOWEST POINT SUCH THAT THE DIKE WILL
NOT IMPOUND WATER OR CCR MATERIAL. A SEPARATE NEW BERM WILL BE BUILT AROUND THE FUTURE
STORMWATER MANAGEMENT AREA FOR LONG TERM STORMWATER MANAGEMENT.
3. THESE PLANS DO NOT INCLUDE DAM BREACHING. SPECIFIC PLANS FOR THE WORK WILL BE SUBMITTED AT
A LATER DATE.
0
0 0 0
O O O
N N N
SECTION A -A'
O
O
0
0
0
0
O
O
O
O
0
0
0
O
O
O
O
0
O
O
o
0
0
O
O
O
O
O
0
0
0
O
O
O
O
0
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
Lo
(D
r-
00
cy)
O
N
rr)
L0
C0
r
00
O
O
N
N
N
N
N
N
r0
r7
n
n
n
M
M
M
r7
n
`t
`t
It
REFERENCES
1. HISTORICAL GRADES WERE DIGITIZED BY AMEC FOSTER WHEELER AS PART OF THE WASTE STRATEGY
ANALYSIS REPORT DATED APRIL 2015. VERTICAL DATUM CONVERTED FROM NGVD29 TO NAVD88 (DATUM
SHIFT OF -0.75 FEET WAS APPLIED).
2. EXISTING GRADES ARE BASED ON AERIAL TOPOGRAPHIC SURVEY PERFORMED BY WSP IN FEBRUARY 2015.
3. THE ASH BASIN EXTENTS PRESENTED IN THIS DRAWING ARE BASED ON THE "COMPREHENSIVE SITE
ASSESSMENT REPORT - ALLEN STEAM STATION ASH BASIN," PREPARED BY HDR FOR DUKE ENERGY AND
SUBMITTED TO NCDEQ (NPDES PERMIT NO. NC0004979) ON AUGUST 23, 2015.
4. 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.
5. TRANSMISSION LINES SAG ELEVATIONS PROVIDED BY DUKE ENERGY AND SHALL HAVE THE FOLLOWING
VERTICAL CLEARANCE FROM GROUND TO THE LOWEST SAG ELEVATION:
100 KV
22 FT.
230 KV
24.5 FT.
500 KV
30.5 FT.
0 15 30 45
VERTICAL SCALE (IN FEET)
0 150 300 450
HORIZONTAL SCALE (IN FEET)
NOT FOR CONSTRUCTION
TITLE
FINAL CLOSURE GRADING CROSS
SECTIONS I
P"=com
ALLEN STEAM STATION
CCR SURFACE
IMPOUNDMENT CLOSURE PLAN DRAWINGS -
CBE
GASTON COUNTY, NORTH CAROLINA
N.C. ENGINEERING LICENSE NO.
F-0342
FOR
ISSUED FOR APPROVAL
SEAL
alql� DUKE
SCALE: AS SHOWN
DES:
ANR
DWG TYPE:.DWG
DFTR:
JAB
ENP�GY®
JOB NO: 60603204
CHKD:
JDM
DATE: 07-31 -2020
ENGR:
JDM
FILENAME:
ALN C999,001,028-036 FINAL GRADING CROSS SECTIONS,DWG
APPD:
JDM
DWG SIZE
DRAWING NO.
REVISION
ANSI
22.0"x34.0"
ALN C999.001 .029
6
9
1
10
1
co0

ALN_C999■001■030
mv. B
670
,�-e
650
RAB
640
630
620
610
590
580
570
560
550
5N5 5OOkV) TRANSMISSION LINE 4AG ELEV TIONS —'--
(SEE R r
FERENCr 5, THIS HEET) —�O 0
2A10 (230kV) TRANSMISSION LINE SAG ELEVATIONS —�
(SEE RI=FERENCE 5, THIS SHEET)
1A606 �100!<V) TRANSMISSION LINE SAG ELEVATIONS —h
(SEE REFERENCE 5, THIS SHEET)
ATER CHANNEL
NG G
HISTORIC GRADE
L
C
1A482 (100kV) TRANSMISSION LINE MAX. SAG ELEVATIONS
(SEE REFERENCE 5, THIS SHEET)
O
0 0 0 0 0 0 0 O O 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
O 0 0 0 0 0 0 O O O O O 0 0 O O O O O O O O O O O 0
+ + + + + + + + + + + + + + + + + + + + + + + + + +
0 N r7 �t Lo c.0 r- 00 0)7 O N r7 � L0 (.0 r- 00 cy) O N r7 0
N N N N N N
LEGEND SECTION B-BI
tAlb I IINU UKAUtb
— — — — — — — — — —
HISTORICAL GRADE (BOTTOM OF CCR MATERIAL)
PROPOSED FINAL GRADES
�8m
PROPOSED SOIL FILL
_
PROPOSED ASH FILL
PRE -DECANTING GROUNDWATER
—
FREE WATER PRIOR TO DECANTING
1. BASIS OF BEARINGS: NC GRID NAD83/2011. ELEVATIONS ARE BASED ON NAVD88.
—F 2. THE INTENT IN BREACHING THE RAB AND AAB DIKES IS TO REMOVE THE DIKES FROM REGULATION AS
DAMS. THIS WILL BE ACCOMPLISHED BY PERFORMING A FULL LOCAL BREACH, I.E. TO REMOVE A PORTION
OF THE DIKE COMPLETELY DOWN TO NATIVE GROUND AT ITS LOWEST POINT SUCH THAT THE DIKE WILL
NOT IMPOUND WATER OR CCR MATERIAL. A SEPARATE NEW BERM WILL BE BUILT AROUND THE FUTURE
STORMWATER MANAGEMENT AREA FOR LONG TERM STORMWATER MANAGEMENT.
3. THESE PLANS DO NOT INCLUDE DAM BREACHING. SPECIFIC PLANS FOR THE WORK WILL BE SUBMITTED AT
A LATER DATE.
INCHES
TENTHS 10 20
REFERENCES
1. HISTORICAL GRADES WERE DIGITIZED BY AMEC FOSTER WHEELER AS PART OF THE WASTE STRATEGY
ANALYSIS REPORT DATED APRIL 2015. VERTICAL DATUM CONVERTED FROM NGVD29 TO NAVD88 (DATUM
SHIFT OF -0.75 FEET WAS APPLIED).
2. EXISTING GRADES ARE BASED ON AERIAL TOPOGRAPHIC SURVEY PERFORMED BY WSP IN FEBRUARY 2015.
3. THE ASH BASIN EXTENTS PRESENTED IN THIS DRAWING ARE BASED ON THE "COMPREHENSIVE SITE
ASSESSMENT REPORT - ALLEN STEAM STATION ASH BASIN," PREPARED BY HDR FOR DUKE ENERGY AND
SUBMITTED TO NCDEQ (NPDES PERMIT NO. NC0004979) ON AUGUST 23, 2015.
4. 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.
5. TRANSMISSION LINES SAG ELEVATIONS PROVIDED BY DUKE ENERGY AND SHALL HAVE THE FOLLOWING
VERTICAL CLEARANCE FROM GROUND TO THE LOWEST SAG ELEVATION:
100 KV
22 FT.
230 KV
24.5 FT.
500 KV
30.5 FT.
PRE -DECANTING GROUNDWATER LEVEL \ I 1
(SEE REFERENCE 4) \ J'
1 �
I I \1
I
RAB DIKE BREACH I
CONNECTION TO RAB NORTH i
STORMWATER CHANNEL SECTION A -A'
1
1
SOIL FILL ABOVI E HISI ORIC GRADE
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 O 0 0 0 0 0 0 0 O O 0 0 0 0 0 0 0 0 0
+ + + + + + + + + + + + + + + + + + + + + + +
c0 I- 00 rn O N r7 Lo O r- 00 C>7 O N r7 Ln O 00
N N N N M r7 r7 r7 r7 r7 r7 r7 M M � � �t �t �t �t �t �t
NOT FOR CONSTRUCTION
TITLE
FINAL CLOSURE GRADING CROSS
SECTIONS II
ALLEN STEAM STATION
KEY MAP
0 15
30 45
CCR SURFACE IMPOUNDMENT CLOSURE PLAN DRAWINGS -
GASTON COUNTY, NORTH CAROLINA
CBE
N.C. ENGINEERING LICENSE NO.
F-0342
FOR
ISSUED FOR APPROVAL
SEAL
rA
DUKE
ENFNIt Y®
SCALE: AS SHOWN
DES: ANR
DWG TYPE:. DWG
DFTR: JAB
JOB NO: 60603204
CHKD: JDM
VERTICAL SCALE (IN FEET)
0 150 300 450
DATE: 07 - 31 - 2020
ENGR : JDM
FILENAME: ALN C999,001,028-036 FINAL GRADING CROSS SECTIONS,DWG
_
APPD: JDM
DWG SIZE
DRAWING NO.
REVISION
ANSI D
22.0"x34.0"
ALN C 9 9 90 01 0 3 0
U
HORIZONTAL SCALE (IN FEET)
8
1
9
1
10
1
co0

ALN C999 ■ 001 ■ 031
mv. B
m
r-
m
D
O
z
INCHES
-- ----- -----
0 CD
I
\
w
\ rO
TRANSMISSION TOWER (TYP.)
o
O w
0
031 I �
0 o
I I I I
0
I w
o
0
I I /
m
r�, O
f I �
/ 0 �/ w
O
SECTION D-D' - PLAN
680
5N5 (500kV) TRANSMISSION LINE SAG ELEVATIONS
670 (AT -745', NOT SHOWN) (SEE REFERENCE 5, THIS SHEET)
..•
650
EXISTING GRADE
640
630
620
610
0
0
0
25 FT OFFSET
FROM TOWER LEG
TO PROP. GRADING
2A10 (230kV) TRANSMISSION LINE SAG ELEVATIONS J
(AT -705', NOT SHOWN) (SEE REFERENCE 5, THIS SHEET)
TRANSMISSION TOWER (TYP.; NOT TO SCALE)
GEOSYNTHETICS TO CONCRETE 5
FOUNDATION CONNECTION 37
TYPICAL FINAL COVER 6
CAP SYSTEM 37
?�L PROPOSED GRADE
- - - _ - -- - - - -- � (SEE NOTE 2)
— --— — — —
HISTORICAL GRADE
ZILLAGE FOUNDATION
(TYP NOT TO SCALF-
0
0
STATION
SECTION D-D' - PROFILE
TYPICAL 7
ANCHOR
TRENCH 37
0 0
0 0
cV r7
C'
031
r
0
m
0
m
O
m
O
ITI
O
m
O
r*m
O
m
O
M
I
PLAN LEGEND
625 PROPOSED MAJOR CONTOUR (25 FOOT)
PROPOSED MINOR CONTOUR (5 FOOT)
- - - - 625 - - EXISTING MAJOR CONTOUR (25 FOOT)
EXISTING MINOR CONTOUR (5 FOOT)
DUKE ENERGY PROPERTY BOUNDARY
APPROXIMATE LIMITS OF IMPOUNDED ASH
APPROXIMATE ASH BASIN WASTE BOUNDARY
•0 LIMITS OF WATER
100—YR 100 YR FLOOD LINE
0 30 60 90
GRAPHIC SCALE (IN FEET)
A I r1 T r C%
1. BASIS OF BEARINGS: NC GRID NAD83/2011. ELEVATIONS ARE BASED ON NAVD88.
2. THE LIMITS OF EXCAVATION AND SLOPES SURROUNDING THE TRANSMISSION TOWER BASE IS SUBJECT TO
STABILITY REQUIREMENTS AS DETERMINED BY DETAILED STRUCTURAL AND GEOTECHNICAL ANALYSES TO
BE PERFORMED AT A LATER DATE.
3. IN ACCORDANCE WITH THE SETTLEMENT AGREEMENT BETWEEN DUKE ENERGY AND NCDEQ (EFFECTIVE
DATE 12/31/19), ASH WILL REMAIN FOR STRUCTURAL STABILITY PURPOSES AROUND THE GRILLAGE
FOUNDATIONS OF THE OVERHEAD TRANSMISSION LINE SUPPORT TOWERS CURRENTLY LOCATED WITHIN
THE RAB. ASH TO REMAIN AROUND THE SUPPORT TOWERS IS AND WILL CONTINUE TO BE UNSATURATED
BASED ON COMPARING HISTORICAL BOTTOM OF ASH ELEVATIONS AND GROUNDWATER ELEVATIONS. THE
ESTIMATED VOLUME OF ASH TO REMAIN AROUND THE SUPPORT TOWERS IS APPROX. 20,000 TONS (16,600
CUBIC YARDS). ASH IN THESE AREAS WILL BE CAPPED WITH GEOMEMBRANE.
PROFILE LEGEND
EXISTING GRADES
- - - - - - - - - - - - - HISTORICAL GRADE (BOTTOM OF CCR MATERIAL)
PROPOSED FINAL GRADES
PROPOSED SOIL F1 11
EXISTING ASH TO REMAIN
PRE -DECANTING GROUNDWATER
0 7.5 15 22.5
VERTICAL SCALE (IN FEET)
0 30 60 90
HORIZONTAL SCALE (IN FEET)
h
I Ills l r\ \
TRANSMISSION TOWER (TYP.)
.IIIa�oAsxe-I
I � ♦ 11 �`^ 1._i�_ii — �i _ MA�ws.E.�s�,
«/1 IU Xl i \\�\RE- N—//�
No . o F
1 I
n`� I
_II
I I'
a��'�r�'•s�-�Wfn /�%'`'may \� I
KEY MAP
REFERENCES
1. HISTORICAL GRADES WERE DIGITIZED BY AMEC FOSTER WHEELER AS PART OF THE WASTE STRATEGY
ANALYSIS REPORT DATED APRIL 2015. VERTICAL DATUM CONVERTED FROM NGVD29 TO NAVD88 (DATUM
SHIFT OF -0.75 FEET WAS APPLIED).
2. EXISTING GRADES ARE BASED ON AERIAL TOPOGRAPHIC SURVEY PERFORMED BY WSP IN FEBRUARY 2015.
3. THE ASH BASIN EXTENTS PRESENTED IN THIS DRAWING ARE BASED ON THE "COMPREHENSIVE SITE
ASSESSMENT REPORT - ALLEN STEAM STATION ASH BASIN," PREPARED BY HDR FOR DUKE ENERGY AND
SUBMITTED TO NCDEQ (NPDES PERMIT NO. NC0004979) ON AUGUST 23, 2015.
4. 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.
5. TRANSMISSION LINES SAG ELEVATIONS PROVIDED BY DUKE ENERGY AND SHALL HAVE THE FOLLOWING
VERTICAL CLEARANCE FROM GROUND TO THE LOWEST SAG ELEVATION:
100 KV
22 FT.
230 KV
24.5 FT.
500 KV
30.5 FT.
NOT FOR CONSTRUCTION
TITLE
FINAL CLOSURE GRADING CROSS
SECTIONS III
ALLEN STEAM STATION
CCR SURFACE
IMPOUNDMENT CLOSURE PLAN DRAWINGS -
CBE
GASTON COUNTY, NORTH CAROLINA
N.C. ENGINEERING LICENSE NO.
F-0342
FOR
ISSUED FOR APPROVAL
SEAL
SCALE: AS SHOWN
DES:
ANR
DWG TYPE:.DWG
DFTR:
JAB
DUKE
ENr-ne'**%'
JOB
®
DATE: 07 - 1 - 020
ENGR :
J DM
FILENAME:
ALN C999,001.028-036 FINAL GRADING CROSS SECTIONS.DWG
APPD:
JDM
DWG SIZE
DRAWING NO.
REVISION
ANSI
22.0"x34.0"
ALN C999 ■ 001 ■ 031
B
9
1
10
1
I
0
w
1

ALN C999.001 .032
mv. g
. •.
e
670
i
650
640
630
620
610
590
580
570
560
550
2A10 (230kV) TRANSMISSION LINE SAG ELEVATIONS
(SEE REFERENCE 5, THIS SHEET)
1 1 4 1
5N5 (500kV) TRANSMISSION LINE SAG ELEVATIONS
(SEE REFERENCE 5, THIS SHEET)
1A606 (100kV) TRANSMISSION LINE SAG ELEVATIONS
(SEE REFERENCE 5, THIS SHEET)
EXISTING GRADE
_
I
FREE WATER PRIOR TO DECANTING
7
I
1
1
\
1
\
PRE -DECANTING GROUNDWATER LEVEL
I
1
\
(SEE REFERENCE 4)
1
1
PROPOSED AAB STORMWATER
AAB DIKE BREACH I
I
\
/ I
1
1
I
AAB SOUTH STORMWATER CHANNEL
DETENTION POND
(SEE NOTE 2)
I
(THIS GRADE LINE IS FOR INTERPRETIVE
INFORMATION ONLY, CHANNEL DESIGN TO BE
(DETAILED DESIGN TO BE PROVIDED WITH
CONSTRUCTION LEVEL DRAWINGS)
I
1
— —
PROVIDED WITH CONSTRUCTION LEVEL DRAWINGS)
-- l
PRELIMINARY BREACH I
--------�---
1
��----I ---
— ^---------- -
—
` ✓
ELEV. 570'
HISTORIC
GRADE
\
SOIL FILL ABOVE
HISTORIC
GRADE
—
ARMORED
LETDOWN
\
O
0
O
0 0 O
0 0 0
N r�
LEGEND
0 O O O 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 O O o O o 0
+ + + + + + + + + + + + + +
� Ln co � 00 On 0 N n `t Ln Co r-
EXISTING GRADES
HISTORICAL GRADE (BOTTOM OF CCR MATERIAL)
PROPOSED FINAL GRADES
PROPOSED SOIL FILL
PROPOSED ASH FILL
PRE -DECANTING GROUNDWATER
— EZ FREE WATER PRIOR TO DECANTING
REFERENCES
1. HISTORICAL GRADES WERE DIGITIZED BY AMEC FOSTER WHEELER AS PART OF THE WASTE STRATEGY
ANALYSIS REPORT DATED APRIL 2015. VERTICAL DATUM CONVERTED FROM NGVD29 TO NAVD88 (DATUM
SHIFT OF -0.75 FEET WAS APPLIED).
2. EXISTING GRADES ARE BASED ON AERIAL TOPOGRAPHIC SURVEY PERFORMED BY WSP IN FEBRUARY 2015.
3. THE ASH BASIN EXTENTS PRESENTED IN THIS DRAWING ARE BASED ON THE "COMPREHENSIVE SITE
ASSESSMENT REPORT - ALLEN STEAM STATION ASH BASIN," PREPARED BY HDR FOR DUKE ENERGY AND
SUBMITTED TO NCDEQ (NPDES PERMIT NO. NC0004979) ON AUGUST 23, 2015.
4. 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.
5. TRANSMISSION LINES SAG ELEVATIONS PROVIDED BY DUKE ENERGY AND SHALL HAVE THE FOLLOWING
VERTICAL CLEARANCE FROM GROUND TO THE LOWEST SAG ELEVATION:
100 KV
22 FT.
230 KV
24.5 FT.
500 KV
30.5 FT.
INCHES 1 2 3 TENTHS 10
0 0 0
0 0 0
00 m O
N
SECTION D-DI
KEY MAP
0 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0 0
o O
O
O
0
O
0
O
0
O
o
O
0
O
O
O
O
O
O
O
0 O
+ +
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+ +
N
u7
co
rl-
00
0y)
O
N
M
`t
Ln
c0
r-
00
(y)
O
N
N N
N
N
N
N
N
N
N
M
M
M
M
r0
M
M
M
M
M
"t
nInTGC
1. BASIS OF BEARINGS: NC GRID NAD83/2011. ELEVATIONS ARE BASED ON NAVD88.
2. THE INTENT IN BREACHING THE RAB AND AAB DIKES IS TO REMOVE THE DIKES FROM REGULATION AS
DAMS. THIS WILL BE ACCOMPLISHED BY PERFORMING A FULL LOCAL BREACH, I.E. TO REMOVE A PORTION
OF THE DIKE COMPLETELY DOWN TO NATIVE GROUND AT ITS LOWEST POINT SUCH THAT THE DIKE WILL
NOT IMPOUND WATER OR CCR MATERIAL. A SEPARATE NEW BERM WILL BE BUILT AROUND THE FUTURE
STORMWATER MANAGEMENT AREA FOR LONG TERM STORMWATER MANAGEMENT.
3. THESE PLANS DO NOT INCLUDE DAM BREACHING. SPECIFIC PLANS FOR THE WORK WILL BE SUBMITTED AT
A LATER DATE.
0 15 30 45
VERTICAL SCALE (IN FEET)
0 150 300 450
HORIZONTAL SCALE (IN FEET)
NOT FOR CONSTRUCTION
TITLE
FINAL CLOSURE GRADING CROSS
SECTIONS IV
P"=com
ALLEN STEAM STATION
CCR SURFACE
IMPOUNDMENT CLOSURE PLAN DRAWINGS -
CBE
GASTON COUNTY, NORTH CAROLINA
N.C. ENGINEERING LICENSE NO.
F-0342
FOR
ISSUED FOR APPROVAL
SEAL
� DUKE
SCALE: AS SHOWN
DES:
ANR
DWG TYPE:. DWG
DFTR:
JAB
ENFIRM'.7 Y®
JOB NO
0060320 020
DATE:
ENGR :
J DM
FILENAME:
ALN C999.001,028-036 FINAL GRADING CROSS SECTIONS•DWG
APPD:
JDM
DWG SIZE
DRAWING NO.
REVISION
ANSI
22.0"x34.0"
ALN C999.001.032
6
9
1
10
1
r
z
0
CD
CD
•
0
w
N
o
W

ALN C999.001 .033
mv. g
LEGEND
EXISTING GRADES
— — — — — — — — — — — — — HISTORICAL GRADE (BOTTOM OF CCR MATERIAL)
PROPOSED FINAL GRADES
PROPOSED SOIL F1 11
PROPOSED ASH FILL
PRE -DECANTING GROUNDWATER
FREE WATER PRIOR TO DECANTING
AIr1TCC
1. BASIS OF BEARINGS: NC GRID NAD83/2011. ELEVATIONS ARE BASED ON NAVD88.
REFERENCES
1. HISTORICAL GRADES WERE DIGITIZED BY AMEC FOSTER WHEELER AS PART OF THE WASTE STRATEGY
ANALYSIS REPORT DATED APRIL 2015. VERTICAL DATUM CONVERTED FROM NGVD29 TO NAVD88 (DATUM
SHIFT OF -0.75 FEET WAS APPLIED).
2. EXISTING GRADES ARE BASED ON AERIAL TOPOGRAPHIC SURVEY PERFORMED BY WSP IN FEBRUARY 2015.
3. THE ASH BASIN EXTENTS PRESENTED IN THIS DRAWING ARE BASED ON THE "COMPREHENSIVE SITE
ASSESSMENT REPORT - ALLEN STEAM STATION ASH BASIN," PREPARED BY HDR FOR DUKE ENERGY AND
SUBMITTED TO NCDEQ (NPDES PERMIT NO. NC0004979) ON AUGUST 23, 2015.
4. 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.
5. TRANSMISSION LINES SAG ELEVATIONS PROVIDED BY DUKE ENERGY AND SHALL HAVE THE FOLLOWING
VERTICAL CLEARANCE FROM GROUND TO THE LOWEST SAG ELEVATION:
100 KV
22 FT.
230 KV
24.5 FT.
500 KV
30.5 FT.
INCHES
TENTHS 110
.. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 1
•o
650
M•
630
620
610
0
590
570
560
FREE WATER PRIOR TO DECANTING
EXISTING
GRADE
PRE -DECANTING GROUNDWATER LEVEL
(SEE REFERENCE 4)
'
( AAB
DIKE BREACH
HISTORIC GRADE
PROPOSED AAB STORMWATER
DETENTION POND
(DETAILED DESIGN TO BE PROVIDED
PRELIMINARY BREACH
WITH CONSTRUCTION LEVEL DRAWINGS) /
I ELEV. 570'
�/
_j
0 0 0 0 0 0 0 0 0 0 0 0 0 0
O O O 0 0 0 0 O O O O O O 0
+ + + + + + + + + + 0 N r7
� co � 00 0)
SECTION E-E'
0 15 30 45 SEAL
VERTICAL SCALE (IN FEET)
0 150 300 450
HORIZONTAL SCALE (IN FEET)
L=com
N.C. ENGINEERING LICENSE NO.
F-0342
KEY MAP
NOT FOR CONSTRUCTION
TITLE
FINAL CLOSURE GRADING CROSS
SECTIONS V
ALLEN STEAM STATION
CCR SURFACE
IMPOUNDMENT CLOSURE PLAN DRAWINGS -
CBE
GASTON COUNTY, NORTH CAROLINA
FOR
ISSUED FOR APPROVAL
DUKE
SCALE: AS SHOWN
DES:
ANR
DWG TYPE:.DWG
DFTR:
JAB
JOB NO: 60603204
CHKD:
JDM
ENERGY®
DATE: 07-31 -2020
ENGR:
JDM
FILENAME:
ALN C999,001,028-036 FINAL GRADING CROSS SECTIONS,DWG
APPD:
JDM
DWG SIZE
DRAWING NO.
REVISION
ANSI
22.0"x34.0"
ALN C999.001 .033
6
1)
10
0
W
W
co0

ALN C999.001.034
LEGEND
Ru. B
INCHES
820
810
:f•
790
780
770
760
750
740
730
720
710
700
.••
B01
670
650
640
630
620
i •
590
580
4=0
NOTE: FINAL HEIGHT OF PROPOSED LANDFILL
HAS NOT BEEN OPTIMIZED. DUKE AND AECOM
ARE EVALUATING METHODS TO REDUCE THE
OVERALL HEIGHT OF THE PROPOSED LANDFILL.
CONCEPTUAL AAB LANDFILL FOOTPRINT/GRADING
(SEE NOTE 1.2 IN GENERAL NOTES, DRAWING NO.
ALN_C999.001.012)
I
1A482 (100kV) TRANSMISSION LINE MAX. SAG ELEVATIONS
(SEE REFERENCE 5, THIS SHEET) 71
O
FREE WATER PRIOR TO DECANTING
AAB NORTH
PRE -DECANTING GROUNDWATER LEVEL
(SEE REFERENCE 4)
EXISTING GRADE
DIKE BREACH
\
1
r n 1
1
I 1
\
\
\
\
AAB SOUTH STORMWATER CHANNEL
AREA (TYPICAL)
/
/ J
i
\
/
/
HISTORIC GRADE
SOIL FILL ABOVE HISTORIC GRADE
/
O O O O O O O O O
O O O O O O O O O
+ + + + + + + + +
O N r0 �t 110 O r- 00
TENTHS
...........
O O O O
O O O O
+ 0 + N
O
SECTION F-F'
0
O O O O O O O O O O
O O O O O O O O O O
+ + + + + + + + + +
r0 L0 (.0 r- 00 0) ON N N
O O O O
O O O O
L
N N N N
1. BASIS OF BEARINGS: NC GRID NAD83/2011. ELEVATIONS ARE BASED ON NAVD88.
O O O O O N
O O O O O _O
N ON N 00
EXISTING GRADES
- - - - - - - - - - - - - HISTORICAL GRADE (BOTTOM OF CCR MATERIAL)
PROPOSED FINAL GRADES
ffilrEffiEffil
PROPOSED SOIL FILL
PROPOSED ASH FILL
PRE -DECANTING GROUNDWATER
FREE WATER PRIOR TO DECANTING
REFERENCES
1. HISTORICAL GRADES WERE DIGITIZED BY AMEC FOSTER WHEELER AS PART OF THE WASTE STRATEGY
ANALYSIS REPORT DATED APRIL 2015. VERTICAL DATUM CONVERTED FROM NGVD29 TO NAVD88 (DATUM
SHIFT OF -0.75 FEET WAS APPLIED).
2. EXISTING GRADES ARE BASED ON AERIAL TOPOGRAPHIC SURVEY PERFORMED BY WSP IN FEBRUARY 2015.
3. THE ASH BASIN EXTENTS PRESENTED IN THIS DRAWING ARE BASED ON THE "COMPREHENSIVE SITE
ASSESSMENT REPORT - ALLEN STEAM STATION ASH BASIN," PREPARED BY HDR FOR DUKE ENERGY AND
SUBMITTED TO NCDEQ (NPDES PERMIT NO. NC0004979) ON AUGUST 23, 2015.
4. 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.
5. TRANSMISSION LINES SAG ELEVATIONS PROVIDED BY DUKE ENERGY AND SHALL HAVE THE FOLLOWING
VERTICAL CLEARANCE FROM GROUND TO THE LOWEST SAG ELEVATION:
100 KV
22 FT.
230 KV
24.5 FT.
500 KV
30.5 FT.
KEY MAP
AcCOM
SEAL
0 15 30 45
VERTICAL SCALE (IN FEET)
0 150 300 450
HORIZONTAL SCALE (IN FEET)
N.C. ENGINEERING LICENSE NO.
F-0342
NOT FOR CONSTRUCTION
TITLE
FINAL CLOSURE GRADING CROSS
SECTIONS VI
ALLEN STEAM STATION
CCR SURFACE IMPOUNDMENT CLOSURE PLAN DRAWINGS -
GASTON COUNTY, NORTH CAROLINA
CBE
FOR
ISSUED FOR APPROVAL
rill.-
�
DUKE
ENERGY®
SCALE: AS SHOWN
DES:
ANR
DWG TYPE:.DWG
DFTR:
JAB
JOB
607-31
DATE: - 020
ENGR:
JDM
FILENAME:
ALN C999.001.028-038 FINAL GRADING CROSS SECTIONS.DWG
APPD:
JDM
DWG SIZE
DRAWING NO.
REVISION
ANSI
22.0"x34.0"
ALN C999.001.034
B
I
10
1
z
CD
CD
CD
0
0
0
o IW

FEv. g
820
810
II •
790
780
770
760
750
740
730
720
710
700
.:•
670
650
640
630
620
610
•••
590
580
570
560
NOTE: FINAL HEIGHT OF PROPOSED LANDFILL
HAS NOT BEEN OPTIMIZED. DUKE AND AECOM
ARE EVALUATING METHODS TO REDUCE THE
OVERALL HEIGHT OF THE PROPOSED LANDFILL.
CONCEPTUAL AAB LANDFILL FOOTPRINT/GRADING
(SEE NOTE 1.2 IN GENERAL NOTES, DRAWING NO.
ALN_C999.001.012)
SOUTHPOINT RD APPROX. ELEV. 671'
(NOT SHOWN - APPROX. 1,790 FT
WEST OF STA 0+00)
EXISTING
GRADE
i
�
HISTORIC GRADE
PRE -DECANTING GROUNDWATER LEVEL
(SEE REFERENCE 4)
_
SOIL FILL ABOVE HISTORIC GRADE
AAB
DIKE
1
i
i
'
\
O O O O O O O O O O O O O
O O O O O O O O O O O O O
+ + + + + + + + + + + + +
� If) co � 00 O O N
MEEMENEEME
INCHES
O O O O
O O O O
`t Lo (o
SECTION G-G'
O O O O O O O O O O O
O O O O O O O O O O o
+ + + + + + + + + + +
I- 00 cy) O N ro O r-
N N N N N N N N
AIr1TCIC%
1. BASIS OF BEARINGS: NC GRID NAD83/2011. ELEVATIONS ARE BASED ON NAVD88.
ALN C999.001.035
LEGEND
EXISTING GRADES
- - - - - - - - - - - - - HISTORICAL GRADE (BOTTOM OF CCR MATERIAL)
PROPOSED FINAL GRADES
PROPOSED SOIL FILL
PROPOSED ASH FILL
PRE -DECANTING GROUNDWATER
- .`KZ FREE WATER PRIOR TO DECANTING
REFERENCES
1. HISTORICAL GRADES WERE DIGITIZED BY AMEC FOSTER WHEELER AS PART OF THE WASTE STRATEGY
ANALYSIS REPORT DATED APRIL 2015. VERTICAL DATUM CONVERTED FROM NGVD29 TO NAVD88 (DATUM
SHIFT OF -0.75 FEET WAS APPLIED).
2. EXISTING GRADES ARE BASED ON AERIAL TOPOGRAPHIC SURVEY PERFORMED BY WSP IN FEBRUARY 2015.
3. THE ASH BASIN EXTENTS PRESENTED IN THIS DRAWING ARE BASED ON THE "COMPREHENSIVE SITE
ASSESSMENT REPORT - ALLEN STEAM STATION ASH BASIN," PREPARED BY HDR FOR DUKE ENERGY AND
SUBMITTED TO NCDEQ (NPDES PERMIT NO. NC0004979) ON AUGUST 23, 2015.
4. 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.
5. TRANSMISSION LINES SAG ELEVATIONS PROVIDED BY DUKE ENERGY AND SHALL HAVE THE FOLLOWING
VERTICAL CLEARANCE FROM GROUND TO THE LOWEST SAG ELEVATION:
100 KV
22 FT.
230 KV
24.5 FT.
500 KV
30.5 FT.
KEY MAP
P"=com
SEAL
0 15 30 45
VERTICAL SCALE (IN FEET)
0 150 300 450
HORIZONTAL SCALE (IN FEET)
N.C. ENGINEERING LICENSE NO.
F-0342
NOT FOR CONSTRUCTION
TITLE
FINAL CLOSURE GRADING CROSS
SECTIONS VII
ALLEN STEAM STATION
CCR SURFACE IMPOUNDMENT CLOSURE PLAN DRAWINGS -
GASTON COUNTY, NORTH CAROLINA
CBE
FOR
ISSUED FOR APPROVAL
DUKE
`/r ENFRtG"*#%' ®
SCALE: AS SHOWN
DES:
ANR
DWG TYPE:. DWG
DFTR:
JAB
JOB NO 0
DATE: 07 - 3122020
ENGR :
J DM
FILENAME:
ALN C999,OD1,028-038 FINAL GRADING CROSS SECTIONS.DWG
APPD:
JDM
DWG SIZE
DRAWING NO.
REVISION
ANSI
22.0"x34.0"
ALN C999 . 001 - 035
6
1)
10
1
z
cn
coo

ALN C999 ■ 001 .036
mv. g
INCHES
LEGEND
EXISTING GRADES
— — — — — — — — — — — — — HISTORICAL GRADE (BOTTOM OF CCR MATERIAL)
PROPOSED FINAL GRADES
PROPOSED SOIL FILL
PROPOSED ASH FILL
PRE -DECANTING GROUNDWATER
FREE WATER PRIOR TO DECANTING
ninTrc
1. BASIS OF BEARINGS: NC GRID NAD83/2011. ELEVATIONS ARE BASED ON NAVD88.
2. THE INTENT IN BREACHING THE RAB AND AAB DIKES IS TO REMOVE THE DIKES FROM REGULATION AS
DAMS. THIS WILL BE ACCOMPLISHED BY PERFORMING A FULL LOCAL BREACH, I.E. TO REMOVE A PORTION
OF THE DIKE COMPLETELY DOWN TO NATIVE GROUND AT ITS LOWEST POINT SUCH THAT THE DIKE WILL
NOT IMPOUND WATER OR CCR MATERIAL. A SEPARATE NEW BERM WILL BE BUILT AROUND THE FUTURE
STORMWATER MANAGEMENT AREA FOR LONG TERM STORMWATER MANAGEMENT.
REFERENCES
1. HISTORICAL GRADES WERE DIGITIZED BY AMEC FOSTER WHEELER AS PART OF THE WASTE STRATEGY
ANALYSIS REPORT DATED APRIL 2015. VERTICAL DATUM CONVERTED FROM NGVD29 TO NAVD88 (DATUM
SHIFT OF -0.75 FEET WAS APPLIED).
2. EXISTING GRADES ARE BASED ON AERIAL TOPOGRAPHIC SURVEY PERFORMED BY WSP IN FEBRUARY 2015.
3. THE ASH BASIN EXTENTS PRESENTED IN THIS DRAWING ARE BASED ON THE "COMPREHENSIVE SITE
ASSESSMENT REPORT - ALLEN STEAM STATION ASH BASIN," PREPARED BY HDR FOR DUKE ENERGY AND
SUBMITTED TO NCDEQ (NPDES PERMIT NO. NC0004979) ON AUGUST 23, 2015.
4. 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.
5. TRANSMISSION LINES SAG ELEVATIONS PROVIDED BY DUKE ENERGY AND SHALL HAVE THE FOLLOWING
VERTICAL CLEARANCE FROM GROUND TO THE LOWEST SAG ELEVATION:
100 KV
22 FT.
230 KV
24.5 FT.
500 KV
30.5 FT.
TENTHS j0 20 30
ALL PTEA. SIAION lot
Te -_..
AN.a,7 J\\ / l\\\` A
APH
r ` -- IN
FALLN RE I TIRED ASH
I
11 l I N STORAGE E I 'R`��FIs�Hp" os,3 o
fir 63,- ,
6; r 1 �'r�
CELL 3
11 14I�
�I
—
nl POLISHING POND
r ` .—
y
u
E l,�
KEY MAP
660
650
640
630
620
610
600
590
580
570
560
O O O O O O I-
O O O O O O �t
O N r7
EXISTING GRADE
(DIKE CREST)
CONCEPTUAL DAM BREACH GRADING
(SEE NOTE 1.3 IN GENERAL NOTES,
DRAWING NO. ALN_C999.001.012)
SECTION H-H'
NOT FOR CONSTRUCTION
TITLE
FINAL CLOSURE GRADING CROSS
SECTIONS VIII
ALLEN STEAM STATION
CCR SURFACE IMPOUNDMENT CLOSURE PLAN DRAWINGS - CBE
GASTON COUNTY, NORTH CAROLINA
N.C. ENGINEERING LICENSE NO.
F-0342
FOR
ISSUED FOR APPROVAL
0 15 30 45
SEAL
DUKE
SCALE: AS SHOWN
DES: ANR
DWG TYPE:.DWG
DFTR: JAB
- ENP@ RGY
JOB NO: 60603204
CHKD: JDM
VERTICAL SCALE (IN FEET)
DATE: 07 - 31 - 2020
ENGR : JDM
0 150 300 450
FILENAME: ALN C999,001,028-036 FINAL GRADING CROSS SECTIONS,DWG
_
APPD: JDM
DWG SIZE
DRAWING NO.
REVISION
ANSI D
22.0"x34.0"
ALN C 9 9 90 01 0 3 6
6
HORIZONTAL SCALE (IN FEET)
8 9 10
1 1 1
co0

ALN C999.001 .037
Fm►. g
TEXTURED 40-MIL
LLDPE GEOMEMBRANE
EXTEND GEOTEXTILE 3" MIN.
DOWN CONCRETE FACE
COMPACT MATERIAL
ADJACENT TO CONCRETE
16 OZ. NON -WOVEN
GEOTEXTILE
q_
CHANNEL
LOW POINT
STORMWATER CHANNEL SECTION -GRASS LINED
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.
CL
CHANNEL
LOW POINT
2 STORMWATER CHANNEL SECTION - RIPRAP LINED
- NOT TO SCALE
NOTES:
1. CHANNEL SECTIONS SHOULD INCLUDE A MINIMUM 2% GRADE TOWARD THE CENTERLINE OF THE CHANNEL.
STAINLESS STEEL BATTEN
3" MIN LLDPE GEOMEMBRANE TO BE EXTENDED
Ill /THROUGH BATTEN. NON -WOVEN GEOTEXTILE
TO BE TERMINATED PRIOR TO BATTEN.
D
D
0
0
0
1" CHAMFER (TYP.) ALL
CONCRETE CORNERS IN
CONTACT WITH
GEOSYNTHETICS
MR
\\` APPLY CONTINUOUS
BEAD OF CAULK
. D NEOPRENE GASKET
8"(D X 34" STAINLESS
o D STEEL CINCH TYPE
ANCHOR BOLT AT 6"
ON CENTER
TOP OF CONCRETE
FOUNDATION/POURED SLAB
GEOCOMPOSITE —
FINAL COVER
SYSTEM TEXTURED 40-MIL
GEOSYNTHETICS LLDPE GEOMEMBRANE
GEOSYNTHETICS TO CONCRETE FOUNDATION CONNECTION (TYP.
NOT TO SCALE
NOTES:
1. IF A CONCRETE FOUNDATION DOES NOT EXIST AT
GRADE, A 6 INCH THICK CONCRETE PAD SHALL BE
POURED AT GRADE, EXTENDING A MINIMUM OF 1 FOOT
HORIZONTALLY IN ALL DIRECTIONS BEYOND THE
TOWER LEGS.
2. CONTRACTOR MAY SUBMIT FOR ENGINEER APPROVAL
ALTERNATE METHODS FOR ATTACHING CAP SYSTEM TO
TOWER LEGS.
VEGETATIVE COVER
6" TOPSOIL/AMENDED
COVER SOIL
TYPICAL FINAL COVER CAP SYSTEM
NOT TO SCALE
2'
24" CAP SYSTEM
COVER SOIL
GEOSYNTHETICS
5' MIN
2' MIN /' 3' MIN
I- - I
PROPOSED 2 FT. X 2 FT.
2' MIN ANCHOR TRENCH
rY TYPICAL CULVERT
NOT TO SCALE
i rL
ROADSIDE ROADSIDE
DITCH DITCH
CCR MATERIAL
7 TYPICAL ANCHOR TRENCH
031 NOT TO SCALE
4 TYPICAL HAUL / ACCESS ROAD
NOT TO SCALE
NOTES:
1. HAUL AND ACCESS ROAD TO BE FURTHER DESIGNED
PRIOR TO CONSTRUCTION BASED ON ADDITIONAL ANALYSES.
2. ROADSIDE DITCHES ARE NOT INCLUDED IN THE FINAL
GRADES PRESENTED IN THESE DRAWINGS.
GENERAL NOTES:
1. DETAILS 1 THROUGH 4 REPRESENT TYPICAL CLOSURE
DETAILS AND SHOULD NOT BE BUILT ON CCR MATERIALS.
2. DETAILS 5 THROUGH 7 APPLY TO LOCATIONS WHERE
BASES OF TRANSMISSION TOWERS WITHIN THE ASH
BASIN ARE FOUNDED ON OR SURROUNDED BY CCR
MATERIAL WHICH WILL BE LEFT IN PLACE AND CAPPED.
NOT FOR CONSTRUCTION
TITLE
FINAL CLOSURE GRADING DETAILS
P"=com ALLEN STEAM STATION
CCR SURFACE IMPOUNDMENT CLOSURE PLAN DRAWINGS - CBE
GASTON COUNTY, NORTH CAROLINA
N.C. ENGINEERING LICENSE NO. FOR F-0342 ISSUED FOR APPROVAL
SEAL SCALE: AS SHOWN DES: ANR DUKE
DWG TYPE:.DWG DFTR: JAB
JOB N0:60603204 CHKD: JDM
�. ENERGY® DATE: 07-31 -2020 ENGR: JDM
FILENAME: ALN C999.001.037 FINAL GRADING DETAILS.DWG APPD: JDM
DWG SIZE DRAWING NO. REVISION
ANSI 22.0"x34.0" ALN C999.001.037 B.
1 10
1
r�
•
0
W
0
Do
INCHES
TENTHS i0
0

ALN C999-001.038
Fay. g
INCHES
1 \ \`\—_ \ CD
3 / ` / , /Ila 30 is�i j'' \_\\ _ �/ /�� f f`—lam `
/ /� _ _ `\_ " ✓� j \ 11 % /� / i%%i _ =\\`\ _\ ~` ` Jam_'—\� �i%', ` \ \��
L_, C� \\y/
- __j AM ATION j�.. �_�J'-`\ //i/�i� iiIIJ��' "\ Lam_\
\I \ \ f / I ____ -- -- I - -- ALI�•L RD � 'i//// -� I� % \\ 11\ ram` - \ IJI ` / it
',1I� I\
i f -, - --- PLANT / 1 -r . \Ilf
\ 1 \ .�'"�� r- s `- \\ I / �, COAL YARD 'III II I \l/ -� \
/ \ \ I - 1 .. / _ ♦ \ 1 I \ \ IIIIltl
1 , _ I \ \ `\ / //LL IN \ ?,
\ \\ \ i \ Ill /IIIII/I I11`` I P
/ �To = �h`-�\\\ \vim �\ \ IN r \\ �✓ J// Ili /a�` I�
7frn-____
l 1 -- jT \\ N_♦ / // �\ \ i \ , 1 \ �j�l / I Pi ti LINED�/ \ 1
ASH '-� \ . -f-'r ' / \ \ \ t \ \ _- �.�\� / 1 I III - / I i
\ Ir-- __-i STORAGE I---J . - _ - ` -_ \� `� / \ �' \ �'� / \ , I \ /�J,�j 1 Ij \\\\ 1
�7—I -----_ y j \ /`< —/ r \ti\\ �J III BASIN \
_
` \ `\\\\\; \ I \\\\� / \
- -*--_ii� _- �_�r--
NN
fill _ f _ -M-- I, ------ \�!\ ►\ \\\ \\\\ \\
II \ \\mil- r\\ `\ \\ \\\ 1 \ \\ \\ r/ ♦\ ``� \� - ____= ------
r,I\ 11 \ \_ I-\\ \, \ \ \ \ I\ ��` \ \ / \ RETIRED ASH BASIN DIKE
/ I \ \\ \
----------------
I I \ I \ y \ \ \ r 1 _ %-------------- - \
\ ► r` 11
O C\' 64 1 W 1 I / V \ \\ \ \ \u \ \
l ti I 1 \ { \ . • . \\ \
O O I -I 1 / I 1 I\\ \ \ \ \ \-' `✓!___- ---- / .- , r / i 11 III Illl ll
so / ' 1 1 / 1 1 V\\��\IIIIIII
O �� ' I 111 I\ \ _`\ - : \ \\- ��" �' / /• I I I I III I
C C 1 1 \ . \ - i — \\___--'' • ,'llllnl II III II
040 / I ♦_ 040 I ` ` \ �_ — �/' i' lll III IIIIIII
_ tr \._ �/ \ \ ____--- ---- / I I I III I
I\ I r I�II1111 II
/�`\/ I ♦ / 1 I I I r ` ` `\ RETIRED ASH BASIN ,' III I { II T IIIIIII
/ 1 ♦ I \ \ \ \ -\ \. \ . IIIII III I I
ASH I \ \ \��- — \ \ \ \ \ NORMAL POOL 615.5 FT. �� IIII II IIII II
_/ \ I / ♦ � I � I I I / _ -\\ _ - ll I I l II III II
/ -- (� • / !. �Gr:..i \ \���\\ / �1 f�II IIII IIII II
/ \ ♦ \� / I FILL 1 I I / \ \ \ FULL POOL 620.0 FT. / / I I I
Z.�7 _ �� \ \�_ \ - /- 11 l� 11 II I
\ \_.' / /' ( ♦• ' j 1 I _ \�►--�-�-� i�r. ` / r...i• flw�1 IIII II
�r_ � — -� �' ♦ I � /� I � � � � \ \ �� \ \ �ti-rfi:aai�--�.......�� l I� Illl lr IIIIIII
11��-=__- - — — i `c' 1 I i I I ; IC LL �� �\ ���� ---���L\� ILL I Illl�lii Jill'
it
/' # I j / ` \ \ / // / \'J IIIII I II 1
--- ----
Li
-- - i �� — — — — I 1 I I i I / , I III II 1
p p� 1 I , / ��— ` I / /�/ / ii I111I I III I
// - / I I I I IIIII 11
r-/— --N �,
I � '' Illj Ij
I 1 - - ' ' ` ��� I i �' o�//% h '--� ��� �' / �' III II IIIIIIII
__ -�------_ I�\\
-- I `�\_ �� I j __�-----_- /� i//�h/r IIII II IIII 11
_.---_--� / �\ 1 r ^\ \ -- I y I ��- / // ii h / i / I I IIIIII
/ / ---- --' / II ASH \\\\ \' IC �1y /� Iill,l!I
I \ \ / _-' - ` ` STORAGE 1 �I I I� / RETIRED ASH BASIN LANDFILL I M-11L Ip
1 \ \ ` ` \ 1 -\`:_-_=_-' "' — _ I II I ' — �'.'; ASH LANDFILL PERMIT NO. 36-12 .'/� ilk l�(01
` ` \\ \\ \—` ,/ /— —I T----------_' \ I— I I y �' �` I ,IIIII
\ I \ I � / ■ � i , / i i / I III
Lu
ii ill Jill
1 9^ \`N� _--\-� \` ` \ '—`� `\
� �\.'^\_ _- 11ttYYI\�J=\ \�•\i/ f// jjj/,/ \\\\
_---.� \\ '\\\ �1/ �/ 1Q I `
r ` �\�. �/ lam` 1 I I I I I
--- \ \� \ _ --- /� ` \\ — 1 `►/ 11 `\ - :�-- \ `� //// MaaY,� -mi- T r II III 1 /1
QL—
J �_------- o_ �I' li `--`\ \ \\ `� \\ NORTH DIKE
o� 1 \ /�� -- ' — ___ -_�_— _= nI' n111 III /
1 Ile. (Ii L I I I
Iljll IIIIII O / / / I fIj I I I�jI
J IIIII II
J I �\ IleIIIII /1 /' /-\ III II IIIIuII // i i IIIIIII' I Iiill IIII
fl l \ \ _ rriO I / / IIII I / I� �l�I�l1 III IIII / I / III III IIIII III
` `- \ I , / / 0 �{� (t / , \ 1 N111
OI / / • 1 IIm�W.S.E.-/i\�iri
636.1IIIIuII 1 \ r /,/'IIII Illli IIIII IIII I
�� ll / / I IIIII II
/W �/ 04/17/14 / �I� \1;--4l►II a l ' i i r Iliil Illil IIIIII iil
O Q1.1 �� f / IIIIIIIIII III I l III I
_ � I Intl I
\\ / / /1 0 /�. 1" I —�_%' / CELL 3 i' I III I iI
PER CELL 2 Il IIIIII IIIII illy ill 1 I
CELL 1 W.S.E.= IIII III I
/ W I I I IIIIII IIIIIII
O m 1 639.6 IIIII I I I, l
\_
0 I / � 640.5 04/17/14 I Iii iiil� IIIIII II
04/17/14
O �.iiiii jillill i
I II
11------ \ __ III IIII IIIIIII I
/-- \ I IIIII I I I
Lo
\ \ � O A I \ hill I10 A•
J -
'
\ ` r\\\ 1 7 I I ICI �I
\ BOA I III IIIIII
I
I I ' 1 1 I \ , \ • •,
I I
`\\ ; �` `\!\\\ `---- I-' 1 ' 11`' I ~Ili Dili
1 \ \ -
I l \ 1 \
/��`\\\I I \ \ � I_: i/
I I\ j�
\\\\:s.-,� '�� - 1pp I IIII IIII `\\\\\
\\ \\/'�\� -- '"t - J_!
W - -�i.� g15 — POLISHING POND �iI111II �iili ��\
-l/==> 0 l i iiil� IIIII \I �`
/ I --- /, W.S.E.=
`--- O-�\`' GJ I I I II \ 1
\ \ I__r�_ m -' 6 634.9 I IIII 111 II /
l 1, / \\ -
ACTIVE A, BASIN / I I I Ill IIII
/ II I II I I
/ ' / /// `\ \` NORMAL PO 634.8 FT. // �' W.S.E.- IIIIII l I I IIIII I
/ . -
\\ `\_ `-_ �'^\ \ \\ / //` FULL POO 9.8 FT. �/ �� i\_. 634.9 IIIIIII lIl I I ' l j I I l I I �
O 1 i / �- — i I IIII I I I
r\__ \-_�`\.-, }�-"r*a . \\\ / ► / /,�__i//// \ / r\\�\% 04/17/14 lil IIII �tl III ICI
/ . \ � \� / - �_ IIIIIIII II III I
// _ \ -�_`\ _ ^\ `( �v/ , / / / /i • / ' - \iIIII
/ _ \ AL - /yuc'r \ / / / l - yYc S� - /i Z I I I I I 11 I I I
_\` \\ -/ \ / / / if 1\\�\ - /_-_--�_/ II�II�II �III� IIIIIIII
LAKE WYLIE/ CATAWBA
RIVER
NORMAL W.S.E. 565.7 FT
-25
l 620
I
I
620
Z-_
\ _ / l _ i`_
_ O / �. I I I I II
\ `\ `\ \ 1\ \ -� I'1 --/ I _- /i- / / �_ _ — i'/ /------ IIIII II IIII III IIII l
`� _ \\ \ 1 II --- i �''
`-\ `\ `\-�1 I m `-----\_/ / ♦-\\-' i'^
\ \_` \I� --- _ / Jr ,'---^ ''
/ f I r { /'_ _^\ \� '�` 'b \\ _--_ .+R _ � _ ._-' u I _ / '� �' -``
\�rz\,,, `- _ 1 j \"
/ " \\___ --- -- _ \ \ _\ `\ 1 \\ > ,-----.�\, II 1 i' ---- \� IIIII jlI 1�1 I
I 1 I 1 = �, �'��� \\; 625 —®` \ I1 \� . %//�-----' ��% /'" 1�►j\l l \ /1 / �/' /' LL - �.�\---- \ .\ (IIIIIIII IIIII Jill-
E.
�' \ \\/_ m_ _ _ _�_ r1 ` �` \ \ \\ / %'—_`—_''/ / I \ 1 / / / i' / p i— 1 \ \ L,III11�� II III \ \ I
! 639.5 _ \./ . � �TI \ \ \ \_--__\ \ . i- i i J
/ \ \ !�-.�_ ` O_- _ \\\ - --- -// /a0c \\ ,uc 1 1 \ \/ /f / - atc'" /' / ♦ /
11 1 l\ 0 /17/�4 r \ \ -" •rs� _ . \ \ �_== __ .\ / I\ \\
\ \\ \'I \_\ \ \ ` ' -\ ♦`- \\ \ I III / / - / / // I
\\IN
IN,
\_ \
756 \ ' I `\\ \ \ \ \ 1 1 I I III/ ce- - - - - / / /
f // o -` \ I I
ol
O 041 041 INN N, IN
\ I \
\ \
\\
If
\ / / \\ \----- \\\ \� \ 'N \ 1 1 1 I 1 1 ^\ ` \
\\\:. \
TENTHS IS IS
10 20 30
LAKE WYLIE/ CATAWBA
RIVER
NORMAL W.S.E. 565.7 FT
0 300 600 900
GRAPHIC SCALE (IN FEET)
------------■
100-YR
LEGEND
PROPOSED MAJOR CONTOUR (25 FOOT)
PROPOSED MINOR CONTOUR (5 FOOT)
EXISTING MAJOR CONTOUR (25 FOOT)
EXISTING MINOR CONTOUR (5 FOOT)
DUKE ENERGY PROPERTY BOUNDARY
APPROXIMATE LIMITS OF IMPOUNDED ASH
ASH STORAGE BOUNDARY
100 YR FLOOD LINE
PROPOSED UNPAVED ROADS
APPROXIMATE ASH BASIN WASTE BOUNDARY
KinTc:C
1. TO IMPROVE CLARITY, ONLY 5-FOOT CONTOURS ARE SHOWN ON THIS
SHEET.
P"=com
SEAL
N.C. ENGINEERING LICENSE NO.
F-0342
TITLE
NOT FOR CONSTRUCTION
ON -SITE LANDFILL SCHEMATIC PLAN
ALLEN STEAM STATION
CCR SURFACE IMPOUNDMENT CLOSURE PLAN DRAWINGS - CBE
GASTON COUNTY, NORTH CAROLINA
FOR
ISSUED FOR APPROVAL
DUKEDWG
E NEm%ji@
SCALE: AS SHOWN
DES:
ANR
TYPE:.DWG
DFTR:
JAB
JOB
DATENO 07 - 31202020
ENGR :
J DM
FILENAME:
ALN C999,001,038-041 ON -SITE LANDFILL SCHEMATIC.DWG
APPD:
JDM
DWG SIZE
DRAWING NO.
REVISION
ANSI
22.0"x34.0"
ALN C999 - 001 . 038
6
1
10
1
z
co
co
co
•
0
0
W

ALN C999.001.039
LEGEND
820
REv. B
HAS NOT BEEN OPTIMIZED. DUKE AND AECOM
txl5I IN(� (3KAUtS
ARE EVALUATING METHODS TO REDUCE THE
OVERALL HEIGHT OF THE PROPOSED LANDFILL.
— — — — — — — — — — — — — HISTORICAL GRADE (BOTTOM OF CCR MATERIAL)
800
PROPOSED FINAL GRADES
780
PROPOSED SOIL FILL
PROPOSED ASH FILL
760
POST -CLOSURE GROUNDWATER
740
CONCEPTUAL ABLF FOOTPRINT/GRADING
_ 7
_ FREE WATER PRIOR TO DECANTING
720
700
.i•
..•
640
620
; mm
580
738Z
O o O O O O O O O O 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 O O O O O O
+ + + + + + + + + + + + + + + +
O N M - L O r- 00 m O _ N M � In
SECTION A -A'
820
e
780
760
740
720
700
•i�
640
620
580
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 N r0 Ln O r- 00 O 0 - N r� Lo
SECTION B-B'
INCHES 1 2 3 TENTHS 10
0
O
O
O
O
+
O
0
0
r-
O
00
O
O
+
00
0
O
O
O
O
+
0
O
+
0
N
0
O
N
O
0
_+
N
0
O
+
N
N
0
O
+
rr)
N
0
O
+
N
0
O
+
Ln
N
0
O
N
0
O
+
O
N
0
0
r-
N
REFERENCES
1. HISTORICAL GRADES WERE DIGITIZED BY AMEC FOSTER WHEELER AS PART OF THE WASTE STRATEGY
ANALYSIS REPORT DATED APRIL 2015. VERTICAL DATUM CONVERTED FROM NGVD29 TO NAVD88 (DATUM
SHIFT OF -0.75 FEET WAS APPLIED).
2. EXISTING GRADES ARE BASED ON AERIAL TOPOGRAPHIC SURVEY PERFORMED BY WSP IN FEBRUARY 2015.
3. THE ASH BASIN EXTENTS PRESENTED IN THIS DRAWING ARE BASED ON THE "COMPREHENSIVE SITE
ASSESSMENT REPORT - ALLEN STEAM STATION ASH BASIN," PREPARED BY HDR FOR DUKE ENERGY AND
SUBMITTED TO NCDEQ (NPDES PERMIT NO. NC0004979) ON AUGUST 23, 2015.
4. WATER TABLE ELEVATIONS FOR POST -CLOSURE CONDITIONS WERE PROVIDED BY SYNTERRA IN 2020 ALONG
WITH THE BASIS AS FOLLOWS: SIMULATED STEADY-STATE GROUNDWATER HYDRAULIC HEADS FROM THE 2020
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.
5. TRANSMISSION LINES SAG ELEVATIONS PROVIDED BY DUKE ENERGY AND SHALL HAVE THE FOLLOWING
VERTICAL CLEARANCE FROM GROUND TO THE LOWEST SAG ELEVATION:
100 KV
22 FT.
230 KV
24.5 FT.
500 KV
30.5 FT.
for
NU I [-UK C.:UNS I KU(.: I IUN
KEY MAP
TITLE
ON -SITE LANDFILL SCHEMATIC PLAN
ABLF CROSS SECTIONS
A"=com
ALLEN STEAM STATION
CCR SURFACE IMPOUNDMENT CLOSURE PLAN DRAWINGS -
CBE
GASTON COUNTY, NORTH CAROLINA
N.C. ENGINEERING LICENSE NO.
FOR
ISSUED FOR APPROVAL
F-0342
SEAL
0 30 60 90
SCALE: AS SHOWN DES:
DUKEDWG TYPE:. DWG DFTR:
ANR
JAB
JOB
VERTICAL SCALE (IN FEET)
EN E �G T o DATENO 076 31202020 ENGR :
J DM
0 150 300 450
FILENAME: ALN _C999.001.038-041 ON -SITE LANDFILL SCHEMATIC. DWG APPD:
JDM
DWG SIZE DRAWING NO. REVISION
HORIZONTAL SCALE (IN FEET)
AN"SI D
22.0x34.0" ALN C 9 9 90 01 0 3 9
B
8
1
9 10
1 1

ALN C999.001.040
LEGEND
EXISTING GRADES
mv. g
760
NOTE: FINAL HEIGHT OF PROPOSED LANDFILL
HAS NOT BEEN OPTIMIZED. DUKE AND AECOM
740 ARE EVALUATING METHODS TO REDUCE THE
OVERALL HEIGHT OF THE PROPOSED LANDFILL.
720 oz
700 - -
PRE -DECANTING GROUNDWATER LEVEL
(SEE REFERENCE 4)
EXISTING GRADE
680 -
HISTORIC GRADE CONCEPTUAL NSLF FOOTPRINT/GRADING (SEE
NOTE 1.2 IN GENERAL NOTES, DRAWING NO.
660 ALN_C999.001.012)
640 --- —— — — — — — — — — — — — — --
620
600
0 0 0 0 O O O O O O O o O O O O O O O 0 O
0 O 0 0 O O O O O O O o O O O O O O o O O
O ± N r) � Lo O 00 O O + N M � U-) cfl I- 00 O O
N
SECTION C-Cl
760
NOTE: FINAL HEIGHT OF PROPOSED LANDFILL
HAS NOT BEEN OPTIMIZED. DUKE AND AECOM
ARE EVALUATING METHODS TO REDUCE THE
740 OVERALL HEIGHT OF THE PROPOSED LANDFILL.
7201 I I I i / I I I I I I
EXISTING GRADE -
680
CONCEPTUAL NSLF FOOTPRINT/GRADING (SEE
NOTE 1.2 IN GENERAL NOTES, DRAWING NO.
660 ALN_C999.001.012)
640
HISTORICAL GRADE (BOTTOM OF CCR MATERIAL)
PROPOSED FINAL GRADES
PROPOSED SOIL FILL
_
PROPOSED ASH FILL
POST -CLOSURE GROUNDWATER
`�7
FREE WATER PRIOR TO DECANTING
—
REFERENCES
1. HISTORICAL GRADES WERE DIGITIZED BY AMEC FOSTER WHEELER AS PART OF THE WASTE STRATEGY
ANALYSIS REPORT DATED APRIL 2015. VERTICAL DATUM CONVERTED FROM NGVD29 TO NAVD88 (DATUM
SHIFT OF -0.75 FEET WAS APPLIED).
2. EXISTING GRADES ARE BASED ON AERIAL TOPOGRAPHIC SURVEY PERFORMED BY WSP IN FEBRUARY 2015.
3. THE ASH BASIN EXTENTS PRESENTED IN THIS DRAWING ARE BASED ON THE "COMPREHENSIVE SITE
ASSESSMENT REPORT - ALLEN STEAM STATION ASH BASIN," PREPARED BY HDR FOR DUKE ENERGY AND
SUBMITTED TO NCDEQ (NPDES PERMIT NO. NC0004979) ON AUGUST 23, 2015.
4. WATER TABLE ELEVATIONS FOR POST -CLOSURE CONDITIONS WERE PROVIDED BY SYNTERRA IN 2020 ALONG
WITH THE BASIS AS FOLLOWS: SIMULATED STEADY-STATE GROUNDWATER HYDRAULIC HEADS FROM THE 2020
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.
5. TRANSMISSION LINES SAG ELEVATIONS PROVIDED BY DUKE ENERGY AND SHALL HAVE THE FOLLOWING
VERTICAL CLEARANCE FROM GROUND TO THE LOWEST SAG ELEVATION:
100 KV
22 FT.
230 KV
24.5 FT.
500 KV
30.5 FT.
0Io
KEY MAP
620 P"=com
/ HIS AIDE PRE -DECANTING GROUNDWATER LEVEL
(SEE REFERENCE 4)
600
O O O O O O O O O O O O O O O O O O N.C. ENGINEERING LICENSE NO.
O O O O O O O O O O O O O O O O O O F-0342
+ + + + + + + + + + + + + + + + + +
O N N-) "t U-) c0 r- 00 O O � N r7 I.cSEAL
0 30 60 90
VERTICAL SCALE (IN FEET)
0 150 300 450
SECTION D-D'
HORIZONTAL SCALE (IN FEET)
INCHES 1 2 3 TENTHS 10 20 30
NOT FOR CONSTRUCTION
TITLE
ON -SITE LANDFILL SCHEMATIC PLAN
NSLF CROSS SECTIONS
ALLEN STEAM STATION
CCR SURFACE IMPOUNDMENT CLOSURE PLAN DRAWINGS -
CBE
GASTON COUNTY, NORTH CAROLINA
FOR ISSUED FOR APPROVAL
DUKE
SCALE: AS SHOWN
DES:
ANR
DWG TYPE:.DWG
DFTR:
JAB
JOB NO: 60603204
CHKD:
JDM
ENERGY®
DATE: 07-31 -2020
ENGR:
JDM
FILENAME: ALN C999.001.038-041 ON -SITE LANDFILL SCHEMATIC.DWG
APPD:
JDM
DWG SIZE
DRAWING NO.
REVISION
ANSI
22.0"x34.0"
ALN C999.001.040
g
1 10
1
I
co0

ALN C999.001.041
LEGEND
EXISTING GRADES
m. g
HISTORICAL GRADE (BOTTOM OF CCR MATERIAL)
PROPOSED FINAL GRADES
PROPOSED SOIL FILL
_ PROPOSED ASH FILL
740
NOTE: FINAL HEIGHT OF PROPOSED LANDFILL POST -CLOSURE GROUNDWATER
HAS NOT BEEN OPTIMIZED. DUKE AND AECOM
ARE EVALUATING METHODS TO REDUCE THE FREE WATER PRIOR TO DECANTING
720 OVERALL HEIGHT OF THE PROPOSED LANDFILL.
.:.
CONCEPTUAL SSLF FOOTPRINT/GRADING (SEE
NOTE 1.2 IN GENERAL NOTES, DRAWING NO.
ALN_C999.001.012)
..e
640
620 EXISTING GRADE
600 - - 1 -
PRE -DECANTING GROUNDWATER LEVEL
(SEE REFERENCE 4)
580 - - i
560 1 1 1 1 1 1 I I I I
O O O O O O O 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 Ln O r__ cc O O N 17
SECTION E-E'
740
NOTE: FINAL HEIGHT OF PROPOSED LANDFILL
HAS NOT BEEN OPTIMIZED. DUKE AND AECOM
ARE EVALUATING METHODS TO REDUCE THE
720 OVERALL HEIGHT OF THE PROPOSED LANDFILL.
700
680
HISTORIC GRADE EXISTING GRADE
CONCEPTUAL SSLF FOOTPRINT/GRADING (SEE -7
660 NOTE 1.2 IN GENERAL NOTES, DRAWING NO.
ALN_C999.001.012)
640
620
600
PRE -DECANTING GROUNDWATER LEVEL
(SEE REFERENCE 4)
580 - -
L560 -
O O O O O O O O O O O O O
+ + + + + + + + + + + + +
O N r0 � Lo O co M O N
SECTION F-F'
INCHES 1 2 3 TENTHS 10 20 30
REFERENCES
1. HISTORICAL GRADES WERE DIGITIZED BY AMEC FOSTER WHEELER AS PART OF THE WASTE STRATEGY
ANALYSIS REPORT DATED APRIL 2015. VERTICAL DATUM CONVERTED FROM NGVD29 TO NAVD88 (DATUM
SHIFT OF -0.75 FEET WAS APPLIED).
2. EXISTING GRADES ARE BASED ON AERIAL TOPOGRAPHIC SURVEY PERFORMED BY WSP IN FEBRUARY 2015.
3. THE ASH BASIN EXTENTS PRESENTED IN THIS DRAWING ARE BASED ON THE "COMPREHENSIVE SITE
ASSESSMENT REPORT - ALLEN STEAM STATION ASH BASIN," PREPARED BY HDR FOR DUKE ENERGY AND
SUBMITTED TO NCDEQ (NPDES PERMIT NO. NC0004979) ON AUGUST 23, 2015.
4. WATER TABLE ELEVATIONS FOR POST -CLOSURE CONDITIONS WERE PROVIDED BY SYNTERRA IN 2020 ALONG
WITH THE BASIS AS FOLLOWS: SIMULATED STEADY-STATE GROUNDWATER HYDRAULIC HEADS FROM THE 2020
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.
5. TRANSMISSION LINES SAG ELEVATIONS PROVIDED BY DUKE ENERGY AND SHALL HAVE THE FOLLOWING
VERTICAL CLEARANCE FROM GROUND TO THE LOWEST SAG ELEVATION:
100 KV
22 FT.
230 KV
24.5 FT.
500 KV
30.5 FT.
KEY MAP
P"=com
N.C. ENGINEERING LICENSE NO.
F-0342
SEAL
0 30 60 90
VERTICAL SCALE (IN FEET)
0 150 300 450
HORIZONTAL SCALE (IN FEET)
NOT FOR CONSTRUCTION
TITLE
ON -SITE LANDFILL SCHEMATIC PLAN
SSLF CROSS SECTIONS
ALLEN STEAM STATION
CCR SURFACE IMPOUNDMENT CLOSURE PLAN DRAWINGS -
GASTON COUNTY, NORTH CAROLINA
CBE
FOR
ISSUED FOR APPROVAL
DUKE
ENERGY®
SCALE:
DES:
ANR
DWG TYPE:. DWG
DFTR:
JAB
JOB NO:
DATE: 07-31202020
ENGR:
JDM
FILENAME:
ALN-
APPD:
JDM
DWG SIZE
DRAWING NO.
REVISION
ANSID
22.0"x34.0"
ALN C999.001 .041
_
6
1)
10
1
coo