NC0004987_Marshall CSA Report_Figures_20150908

�$,
s
mv
IOW
—— — — — — — — — — — —
— — --
°
� r
4 qy
. _, - - - ., � , - - ..../ °... ! �, I 1 1 y •� n ;. fe. ; T q � a a �' '�c S t t ,�lx �• Ez c .�', _
v
r
i �� ry i� -':.. " ♦ - 1 „ k:. '! �:'.4`� [wig:, �l'� - -
MM 1r[1[gII Ir[I[gII ��IrrI��II��IrnI[II y�; sr
�=' � ':�' ,e+ � oUVDV��U� (�- 1 r - � �' ,y .`,� �' 4..; q,�•, "( �'3�4P � �•� LF ``4� T'i"� 4
� "p b/ 7 I''!4`.�iR. � � r R. • R ,,,p sy[ r r � � � � �'R;� �gt ��' ,t. .a
I
QpG IIg 0 CELL ID �� �' •�' � r� �' s "t,R: } � h
& r y 1
r
' qp ° . fb°`i � ya � S �`�., - - y J*: i . �� �+R. 'f J•' .,k.^� �+. � '� � r Z L.
,
,w
° 'mot,•
.h
{ r
Do o •
-• if yg,
•,. _ .. . " i ,, .- � is J ':`. _ �d isk + [' .
:
,
LMPIFOLL
r
t' Ak
�vt
�', wtj
}
1p@D L3C�DMC
` n ,v J
IL
0
Al
0
r
f q
' � ' • t � . 'r a ;�, �y `� .'� r, �.?r ®� 4.. - v /. den -
,
r
�yr .
-
R"
nIV
f
1
r
,
LL \
- ._� � — — — — — — — L• — r — — — — — — - �„ '� .- •,-,�� Yr•K � r ` - '[ , J - J � i+`C '9'-;�- ��, a^t r. F''�• K ��
c
�; A , •/ _ 1^. � I ♦ ♦ / f r, �, �,: ., �� ,:, i s ,, ' fin, 1� Y ' rti
j
500 0 500 1,000
SCALE (FEET)
SITE CONCEPTUAL MODEL - PLAN VIEW MAP
AREA OF BORON EXCEEDANCES OF 2L STANDARDS
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
"t i'r
z
LEGEND:
ASSUMED PRIVATE WATER SUPPLY WELL
FIELD IDENTIFIED PRIVATE WATER SUPPLY WELL
PUBLIC WATER SUPPLY WELL
RECORDED PRIVATE WATER SUPPLY WELL
REPORTED PRIVATE WATER SUPPLY WELL
APPROXIMATE GROUNDWATER FLOW DIRECTION
AREA OF BORON EXCEEDANCES
OF 2L STANDARDS
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENT
WITH DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
DUKE ENERGY PROPERTY BOUNDARY
LANDFILL/STRUCTURAL FILL BOUNDARY
STREAM
NOTES:
NC 2L GROUNDWATER STANDARD FOR BORON IS 700 pg/L
DATE
SEPTEMBER 2015
FIGURE
ES-1
CATAWBA COUNTY, NORTH CAROLINA

I=)
SITE LOCATION MAP
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
CATAWBA COUNTY, NORTH CAROLINA
DATE
SEPTEMBER 2015
FIGURE
2-1

INDUSTRIAL
LANDFILL #1
PERMIT No. IM
ASBEST[7;
LANDFILLPERMIT
No.1
N�. $CI4
ti AS+I "CILL
(PHASEE'!
# FAdbL
GpILL
PERMIT N`0- 18
` r
Orr ASH LaeMC�i�L
(PHASE 1)
ASH
mp, ll�qj 61
1 �
lb
:Jdlf
1. SOURCE: USGS TOPOGRAPHIC MAPS -
STAiTESVILlJE QUAIRANGLE (1981)_
SCALE (FEET)
tow o r om ?
F)�
PRE -ASH BASIN USES MAP
DUKE ENERGY CAROLINAS, LL
MARSHALL STEAM STATION ASH BASIN
CATAWBA COUNTY, NORTH CAROLINA
a
IL
UATt
EPTEMBER 2015
F iURE
-

7
A•
a
r
a
P ,
B)
If I
Ve i're-
# f
� :k: ��' x . ems« '� ., � f t� `, �' • "*'
W fY
Ie-
tv
Ll
l a�
i 1
`
� x
.
iVv
Iti c W. jq 'n4'
c
to
ro« �

YAP
ff;` VII`
qp,-
VA T,Tr R`&p I
�l I It tl
� 7
.41
r it
1XI
F, IF
it , I
it 'wWr IV 4
it _75 'A
't TII
V' ll";, - I- I :Ilt
f, 4
A't
It,
�Cl
Jill t
'All I rtf
S�i % I, 'Alt
-it
Vill
Ilif
It,
1� fir L
lit
cl,
IV
il'ie III i�
4 1 W, tv 'A
tO 3, I_ 'All
4-
p�e
ir Pl
Wit
lotl
lit
lit
s 'll' I - 'i " lit
le
lit T Jill ,
it, rl .
l I 'r- 7 ,
If,
lt
A
& •XA
214�1 5il
Iligy
Nor!
,*4 IV
it
I
yp
1�p I ruil"; If I iiir. �.f 1* -1
AF, I it �t - ✓r I I *i `-,� liI� w
VI . I, \ I. l V 11 iic� 11 1 i 1, 4t4 � Ip� '46,jip lvr4�, fr
i"It 16 �l " f"' �
it l IN
tt"
w it tgoi
r ii, it, 14
I I
1111111flM I'm ffi!�MU
totrit
Vl� I It
It
vk'l
"I
v it l
A%
Q, 6 1 , ,
v Wyll
T� W,
4 rili
tIVil f�44
,
1,
"
vklw ilr oL
o� j
q4
Cr 'i Rk
14
e'G
I Vir
110
til
op
pg
4, e
r ­Y r it
it
IeIi
it I I
rV
I
Ale
It
-it
It Al
FKA I•I I .4�
71 (1
it
'04
9'.Xll
It
AV
?,fl
It �x
1.
r,
1p t� rirl I
ILL
'l t4Vef�lIok t
P5 v
it t
p
D, 4;�
4
, jlx�
WiltiR#z r I
Pr
Ail
ri
kill n2xfOA
I it
vi
I - �Rr li�lr - - I '1� N 1 .1
Till t'
ii, "
17 *�
Ll
IV
lit I,
it
It ;im J\w
*% 17
T
ON
SOP,
IV

Lake
Norman
-10
Unit 4 ID Fan Control
House Cooling Water
Intake Screen Backwash
Ash Sluice
Marshall Steam Station Water Schematic
NPDES Permit #NC0004987
Catawba County
)utfail003 Figure 2-6
0.2 MGD
Evap. 1.7 MGD
Flue Gas FGD Wetland Wastewater
Desutharization Treatment System NPDES Internal
(FGD) Blowdown Outfall 004
Water Treatment
Drinking Water
(groundwater)
Misc. Equipment
Cooling
Boiler and Turbine �1 9
Room Sumps
Condenser Cooling
Water
Sanitary
0.01
Yard Drain Sumps
(2)
Storm Water
1.45 MGD
MGD
Ash Basin
Outfall 001 Lake
1093 MGD Op Norman
Outfall002 Lake
8.3 MGD Norman
Outfalls 002a and 002b Lake
Emergency overflow only
Norman
(no flow expected)

IIIfIII I IIIIIIIIIIIIIIIIIfir InIfIII inIellfIfIIIIifIIfIel1 IIIIIIIIIIfIInIIItInIIlenIII14 fII1 IIIIfIIIIIIIIIIIItIIIfIy— IIIIIIleIlIIeleIIIIIIIfII IIIIIIIIIIIIIIeIIIIII16 IIfIIAll I rgerf IIIfIIle IIIIellIIIIIIIIIIIi1% 1 IIIIelllef,f, 7 IIIiIIIInIIIlInA 9PIP IIIII16 IIeII IIIIin 41 IfIIIIIIIIfItllIfIfelIIItItIIIIeIIlIIIfIt II1 4 IllfeeIIIeenfIIIIIIIit,
J6
•
Iif n, ItIIIIIIII IIIIIIIIIIIIJ6 IIIIIIV, II % IIIIIIIitIIIfill IfI.1IIIIfIIffIIt. I' 4 II ell, I ell ll11 IIellIftire Ir III,,I I IInIelIetIIIIIIIIIIIoff IleIIllIllIIlettIIfIIIIInIIIIIIIIIIleIIfIfIIIIIIfIIeIIIIIIIfnItIIIIIIIIIIIIIIeellIIIItIIIIIIIIIIIfIIIIIIIIInIIleIfIIII1. IIifIfInIIfIre am I IF
Ffleffra IIIllIIIIIIIIIIIIFp IfIIIIIIIIIIIle Ie vwl IIIIII4j IfIIIleIIIIn1, I IIIIIIIIfeIIIfIIIIIIkL IIfIellIIIfII IIIIIrIfILj .kL IIInell40

qp
106
`r*
jd
49
'OWL f -
20kV XL,Ooo lo)-k 5153 ASH 03
Imi

1 CHM
917%
4' �
Va I co n k2 A.%h Shale Fly A&h Bottom,'Uh
Si ■.A] Fu Ca EGtiver Fear ElenierH5 ■Minor Eluntin[er ETFaGa Eltrrenla
NOTES:
1. FIGURE WAS OBTAINED FROM THE EPRI COMPARISON OF COAL COMBUSTION PRODUCTS TO OTHER
MATERIALS - CHEMICAL CHARACTERISTICS, FIGURE 3-1, PG 3-2, EPRI, FINAL REPORT, SEPTEMBER 2010.
F)l
ELEMENTAL COMPOSITION FOR BOTTOM ASH,
FLY ASH, SHALE, AND VOLCANIC ASH
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
0
DATE
SEPTEMBER 2015
FIGURE
3-2
CATAWBA COUNTY, NORTH CAROLINA

11 rLB11
0
J
C -
� 1�
� w
"r
1
fJ. G1
As Elmer {f•:! (7 I !g Fk: Se .g
1' r i,�T •
Elemeni
�Tn Fkmo;Wry 1, FNI
NOTES:
1. FIGURE WAS OBTAINED FROM THE EPRI COMPARISON OF COAL COMBUSTION PRODUCTS TO OTHER
MATERIALS - CHEMICAL CHARACTERISTICS, FIGURE 9-1, PG 9-1, EPRI, FINAL REPORT, SEPTEMBER 2010.
F)l
COAL ASH TCLP LEACHATE CONCENTRATION
VS REGULATORY LIMITS
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
DATE
SEPTEMBER 2015
FIGURE
3-3
ATAWBA COUNTY, NORTH CAROLINA

100000
1000
'
10
I
� 0.1 r
0.01
i
0
0
0,001
As BSI CAI Cr Pb Hp Se ,fig Sb Be B Co Cu Mn Ni TI V 7r I
EPA ResiderAial Soil Screening Level Elemerd
"Ooncentrabmr, lass 1--or
Fier Ash Boas (1Cf" and 901" percorrdw� maims detactlon Ilmlis.
NOTES:
1. EPRI 2009B.
F��
TRACE ELEMENTS IN FLY ASH VS SOIL (EPRI)
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
DATE
SEPTEMBER 2015
FIGURE
3-4
ATAWBA COUNTY, NORTH CAROLINA

100000
A
NOTES:
1. EPRI 2009B.
As Ba Cd Cr Pb Hg Se Ag Sib Be B Cu Mn Ni TI
I.evel Element
V Zn
`Oanaentrahona IvI than J
15otLom,�sh Range f 10 ' and 90 ' porcuTible) th�1 °dek llon llr lls.
TRACE ELEMENTS IN BOTTOM ASH VS SOIL (EPRI)
F MEN., RI DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
CATAWBA COUNTY, NORTH CAROLINA
DATE
SEPTEMBER 2015
FIGURE
3-5

I .
lilt
AL
1 i � r � • � � �,- : � _ — ; � ���• — � � OHO �..;�' �'-', )
\ \, �O 10 0
° 8
52 `S�p,N 01 ,, 29 8
1�q.8 2 INDUSTRIAL p l� / ✓ 1 1 \.✓ / \ �. -
\ • r ; ay ° 4 LANDFILL #1 12 p W /./ ✓ \ _1 �,'
a 6 30 ° i
5 j i 1 00 47\680 0 06 3 5 p 31 09 W t \ j` �;
61
hc+elz ills i69JTd , 46 45 ASBESTOS
DEMOLITION -` f;" • �LI I i i l /
l / �i, LAND FILL
p
( 070 LAND
044 FILL"-.,
43 `•,ft ' ` \ \ �11,0 lJ �� ` �" / / /) u.
0 q.72 �0 ASH
y / 042 LANDFILLCIO
- _�J l ��� / / ( J/✓ / (�
i I _ 40p
PV STRUCTURAL
i
i r 1 50 TEq FILL 1 1 s J LAKE NORMAN (,e'ATAWBA RIVER) �.
t,. m (v� / �23� C51
\\ O 56 `gNr RO \
-- so 22�
73037057 Ci YASH
LANDFILL
y
670 38 65 L
=
g 0 ASH BASIN f , /
w '
39
0-.� j "� ,y ASH BASIN J C `%� it Boats
02 FG[ '-- '' �' Legend
/
• L 1-.' / . 33 ANDFILL=: 77 / — — — DUKE ENERGY PROPERTY BOUNDARY
.
35 034 L F s1rx �` .' 14
a NC15 \ I` �(<� ASH BASIN WASTE BOUNDARY
-�\ I--.. �' 1 I f!_ - / , / yR x �_ ASH BASIN COMPLIANCE BOUNDARY
25 16 � ,. j/� / , I / 1. f ,Ca�pgroo ASH BASIN COMPLIANCE BOUNDARY
, 'l `, t / ;� 11 PWS: NCO118622 55
1 \ 1 j 63 24 ° 1 —COINCIDENT WITH DUKE ENERGY
o61 0 0 PROPERTY BOUNDARY
_ _ x
° 11 016 GHQ %;-\ E 0.5 MILE OFFSET FROM ASH BASIN
n a, _ 54 �� COMPLIANCE BOUNDARY
14�053 \- 1 -�' - 1 ,- /18 17 ��CLANDFILL/STRUCTURAL FILL BOUNDARY
—_-� /19 020 \I r`•/ PWS: NC011873'6 0 — — —STREAM
J 79 p i mso� p P '—
_ IL 0 ��� • PUBLIC WATER SUPPLY WELL
PWS: NC0118676
�.-. p A \ ♦ �,tiy / GREENWOOD RD , • RECORDED PRIVATE WATER SUPPLY WELL
,J. 75 0 21 �� ''��`, �� J X;y/ FIELD IDENTIFIED PRIVATE WATER SUPPLY
Ii WELL
� ��' ✓� ° o77
s/ N O<OSC�q�' ` J / i• • REPORTED PRIVATE WATER SUPPLY WELL
D
el^�oN��^ w A O O ASSUMED PRIVATE WATER SUPPLY WELL
� r
NOTES: DATE
1. ASH BASIN WASTE BOUNDARIES AND ASH STORAGE AREA BOUNDARIES ARE APPROXIMATE. SCALE (FEET)
2. PRIVATE WELL LOCATIONS ARE APPROXIMATE.
3. USGS 7.5-MINUTE SERIES TOPGRAPHICBASEMAPCopyright:©2013National Geographic Society, i-cubed. 500 0 500 1,000 USGS RECEPTOR MAP SEPTEMBER 2015
4. THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCORDING TO THE DEFINITION FOUND IN 15A NCAC 02L.0107(a). DUKE ENERGY CAROLINAS LLC
5. HYDROGRAPHY WAS OBTAINED FROM USGS 7.5-MINUTE SERIES TOPOGRAPHIC MAPS CATAWBA NC, TROUTMAN NC,
DENVER NC, AND LAKE NORMAN NORTH NC. MARSHALL STEAM STATION ASH BASIN FIGURE
6. DUKE ENERGY PROPERTY BOUNDARY WAS SUPPLIED BY DUKE ENERGY REAL ESTATE.
7. PROPERTY INFORMATION PERTAINING TO IDENTIFIED WATER SUPPLY WELLS IS INCLUDED IN TABLE 4-2 CATAW BA COUNTY, NORTH CAROLI NA
['a

+s
F.
t
01
�:952
t
,470-,��..
�6 3�06''7
'
69
O
68o:
60
46 7 ...
0`
45•
a
2
430
-
FGD
RESIDU
LANDFII
NOTES:
1. ASH BASIN WASTE BOUNDARIES AND ASH STORAGE AREA BOUNDARIES ARE APPROXIMATE.
2. PRIVATE WELL LOCATIONS ARE APPROXIMATE.
3. ORTHOPHOTOGRAPHY IS FROM NC ONEMAP GIS ONLINE SERVICE AND DUKE ENERGY CAROLINAS, LLC.
4. THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCORDING TO THE DEFINITION FOUND IN 15A NCAC 02L.0107(a).
5. HYDROGRAPHY WAS OBTAINED FROM USGS 7.5-MINUTE SERIES TOPOGRAPHIC MAPS CATAWBA NC, TROUTMAN NC,
DENVER NC, AND LAKE NORMAN NORTH NC.
6. DUKE ENERGY PROPERTY BOUNDARY WAS SUPPLIED BY DUKE ENERGY REAL ESTATE.
7. PROPERTY INFORMATION PERTAINING TO IDENTIFIED WATER SUPPLY WELLS IS INCLUDED IN TABLE 4-2
WIWI
SCALE (FEET)
500 0 500 1,000
FEZ
I
Legend
— a — DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
F ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
COINCIDENT WITH DUKE ENERGY
PROPERTY BOUNDARY
0.5 MILE OFFSET FROM ASH BASIN
COMPLIANCE BOUNDARY
LANDFILL/STRUCTURAL FILL BOUNDARY
® — STREAM
PROPERTY LINES
0 PUBLIC WATER SUPPLY WELL
O RECORDED PRIVATE WATER SUPPLY WELL
O FIELD IDENTIFIED PRIVATE WATER SUPPLY
WELL
O REPORTED PRIVATE WATER SUPPLY WELL
O ASSUMED PRIVATE WATER SUPPLY WELL
DATE
RECEPTOR MAP SEPTEMBER 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN FIGURE
CATAWBA COUNTY, NORTH CAROLINA
51H

A
a
t
I
�
✓ (d
a
ti
Ilk {
r
�s
11 Y
*k
LZ
IL loll
r' 4f
a a f d
rr
_ f �.

A
a
t
I
�
✓ (d
a
ti
Ilk {
r
�s
11 Y
*k
LZ
IL loll
r' 4f
a a f d
rr
_ f �.

,
i
N ,
w
a
O 61
90 19
�v5 �
$ - O
91 ND
89 o
cl2 O�N
r24r
W
18 - 87 .;
:1 60 92
sa o
�, INDUSTRIAL 26 82
x
5
G 4 93 LANDFILL #1 ,' 22 ✓ 21 $3 862 �.
39 r
3$ �,-
' 37 17 DEMOLITION 20 61 _
36 35 z LANDFILL 70 84 73
7
31 57
r
A_ m 32 \ram 3'4 � ' ASBESTOS 85 71
3356 r LANDFIL.LV
— 54
` 3 DRYASH R,
5 5 53 LANDFILL „
(PHASE II)
50_
49 :, _:•.
PV STRUCTURAL
28 40 STF FILL = LAKE NORMAN (CATAWBA RIVER)
1 42 R y f � 41 gIVT - '
30 DRYASH aM�ZU
p LANDFILL
27 43 44 (PHASE q J�
Q)�'P 45 63 ASH BASIN
q 46
t
,�,
47
�.
ASH BASIN '� G���O solo",
.^�� ��� *�'��t t` �3a� �1• �,� ,� �" ,
48
69 �67`_
64
63
FGD j
11 p10 RESIDUE �• �. ���`>
LANDFILL
14 �''
�'773
r f ,
1312
62
0 r
P g
te
9 PFON
P • :•
N 15 —G
dj9 \
p
16
58 9'�✓' '. s GREENWOOD RD `°� 1� .. • . : • . .
i
OpQ 78 7 76g r • : •

Tectonic Map Explanation \'°
'---
(!MOTS: Subsurface continuation of ferranes shown in lighter shade of some color) � , e _ �� � — � � TN ICY 3 � 84 �� 0� �0,
Triassic -Jurassic basins 38 $
® fA:riiu ar'surgu e. "' R- _ _
Tria'
34'
Igneous Rocks Terranes Accreted +
sills, d Rows =e `f .� b G N lMe. — 'IWTHAM70Madk During Taconlan Events T ark r"
ptmksg 4fP ngaaaJ v'r? - areersvril +sr - ,f,,� Alabty r
2BS-3d5 Afa gra hard Wwroas (La oenfian arnfty. dtsra), deep-Watar deposits) �. 1\ R4 ---.. ��.... �„ .:�,.,n�`r` Mu yA � vyr rr70 ,,....,... ,
(Modern aged real Hamburg coinpplelr (Flc)...............�SA`�n
® 32 X5 Me gr niroid plurons ANoarilh and vA t Elaine f desp-wa[ar d,s Hr margrn --_ _
(Mode n rg. dareaJ J s t��r r
f.slks and ce,ban d fJl phin FoA Vhjf thnrsl mro Ine 1, __ f4%+._. _ _ R I
7S(Yl7S Ma P1 fororaedoverthe ninsb4waeus+nfr . Incru i'stp tons and `. l C 1 R
gr ndald titans \
® o Mby for Mcy sttwg Farmafron Moe to
$Cnachrsr v;~ WV
(klbdern No dates! Noes agWbalpnf craafft C4cali[0
AormAlmn to Nv SE a� ��'' y �- ` rta `Ss6 �a c +► V AI •-y-•
- JAf.de 51ga danirord Al,+tanY _ T'
D � ,
(Madsrn rga dareaJ
Westminster tartans :- 'y'+A L' .
afa-da Ma Pfufpns Naaprvieroavrcrr:amhnaar-MhMla Ordavrcrrn daposRfond +--ti - •p. r t 1
vok.dsm Svdrarenfrry campanonr a>. vakanic. � _. j G � • \ +y • °ba ,p �7jy�r '� i �� „.�
0 L17rY� ar74rifen phrlona " .r 4 •. \•-• 9 �"i� � rl
Inv ged.resj Dahlonega goldbelt sv - _ - lP 'r t. '�,. �.--• J�..- wwi��
Grdvwnfen Pfufon Heapralerorme7Caonhn Mrddi. Ordov Waadc a N PJ
deA4Y1lkn d MORa/atc vWconism minty } 15 G/ f?J \ v -
(Modemaged rest ary mfwna I +g 2 'Wf d4B17I
Greansrone d fasalrte basement Sedrment r karrm Cvntefna s� a
rM defrttaV Oilcans vlposarbN GonrAvrnan or Penakarn ef�nfty. 1„�`
/R knee Only Bkry RIdg� ladle Cowrock terran8 `'_-,• Nf't '. •I '+ \ A ♦ a f 1 ��-��_�, ,r.
tin Neaprorem k.'Cambden etas Ne dep..rNo gphhi.Mre. d
sn4wa, !nclgfNY Csfx Fm. ivA1 d rake f 1,15 G.f 7J basem 1.. Sad emery component
- s
F}Ndebee Greeraatone (AL�.A}. sea Oak r MMdre Ordavfefan fanAAte pluron.4\��-
llWameRc rocks _ ..-a *� ied it .
fNuopf4laror+NeMOrdavklanl Cartoogecheya farrane
790-336 Ma ♦r -lamed Neoprpror4titan depo f • mpnM1krire rmrrie- ` r t + - A T` 4
w,nuad, urrram rc PA... J sWOMP. Ak :. r ar r.rs Ga \y '^� p Pe. :% ,.T
fc N super[ nrJ bsse;nvnr Sedimentary component vakanic. 's`-
735 Ma Hit- rafed afkonc Ar.Ws-
(FarkdriffingorRodin.fa) hA 'a E ti b a _ 4.. -•a ✓r1� \y`y,,1 +✓ .., -� h lr
Laurentian Platform Terranes Accreted During
& Rifted Margin to Afleghanian Events ;' 9 ; ••`'.-' J - a �. '�_° �r ti*A SCE`
(ors ref, deelo-water deposits * Y
ClJslrc Wedges and are to -MORE volcamcs
AlVsghsafrn f�M+ssrssrpp+rn-Po7 ' F`` `4a ' �� `� r t r it a n� AR STEAM STATION
Cat Square tartans FL _a _e a"A `i.i i •S•a + olumB a -- - _
M SHALL
No"$Lau Op. dAralonJA ffinrly. �� 1 ~"
0 At dfan and Ne4Acadan e
(L re 0sv.-sally M ss,ppiani wet -roe Ma deposition,rnarama la -MORE .akrmea „� -
w^
,r.mr.4n ch n fatJ ruaaloo Mllfon-Potomac-Philadefpphi� terrane +- '
(Early to M,ddM OevonianJ Of.CrL (mien Neopterawre/C mbrlan-MfdNe �davklan ' t 'e ~ t;�_ _ ` dis .1L a pf ma r.rs ca waemanf C ,. der ,. - � , -
Triladega beff (A! GAh e•14-MORR rcanln aJarrges. Aaund.nf Grderrea.n ` ` -
plurons. Sid sorely panenr as vWl tic I * 4 •,� " toll- __
a rrr Ednsfarc a �a ° N-
rlyM AP J Smith Riverallochthon -
rrevpr roroaok met ..dhn la y andmelavdcank i „
L y A A mur n rocks. O d4Wcran Afuto May he ro ttcvanfrkn. d {
ane:a�fl f n7 Aam GvndWan.npravanenea "1e
11w C br ra LowerordovfeJAn Kin s Mountain (KM tarrane t n f - * o- i
LaurvN m g7n ciaalrcand Nrat ta, 1'i dAr kale ellHn ly �\ l tiv �.__ _ Abbreviations
»../ L��Py.�j,.A�
eArba f k NmpraF f to Carrnbrr (7, depa INsn waA Laurentian = iFj r,J r„tf Y i / f and [J Symbols
I I �JL
Rated grl wccessron algnity; arc raJcankink viper!-G ndwartan aR+nlfy. r 1 4 *� �y _
eq.N 7 M.fNeepror...mgc F �, I[j • A. =APm .M«Mfw.r fall ae.-i&rr.rorn a.hf.NMan (gal Ar-Mrrowxl.m f�.aJ
Carolina su rterrane eri-Gondwanan a b Ir_a .ne.. ..tarp,! MOa-
aW- a yv w rr"loa-scl Earry cembrlanJ Ae (P l E I 1 +=,• ` ca.eenp«°ay. rv.n. raa.,rcl +mvp+•••-4n+rek..mda.ru-au_. ,rw+ raa-sei crrorina rerranr � cn ru,. -
9 qaw.-q a.L aH..m agsekrne e.Oar fJ wr feat
wadowas Groopf 77 fAi7 pracmcral ffvw gro d 1 p nunra N oev- w++rrw�q. pyre MnrNFoal SAt_ 6o.A rtb
Neeprafaraaok de s! nd are volcanism 4 •e - _ ng„-spnrye grws.pgry fpr4 aw_arWr.merWwr.In rimbwfN4
® (6rdovkirn oryannp J ra OrdarlcJan fal deposaifan. / % \ \ 1' a - nt-rY•s+.+fMl Lar- uror.araru Cmrr wwrava rrM as._9oq.no �nr..ris.+.ust1
TacaRJan Chrri'olm rerra,rm
/ \I•e ti,_ - rcg-frkwe kwmro.Nr ak
IIIIIIIIIIIIIIIIIIIN
Marffnaburg-Tuscarora dnha[rusfa!(hfgy grade,JI epmPan.nls tires y r �� \ i .1r. as>wm Rxp.+ssW(P.ys erG;w-cm+nry e.r,guwi .nn nunfG;S.wcJ
iCYadOe !4 LrandpvefyJ Naoprororoaorc depparRan errs arc'valcani.em - °� \ p. ftmotf J
rre r�.rwraa rase sue.fFasJ �'-saveenp c.ra sines.. f++Fpnl qw-w..w.�:. r„,nrac-rnJ
Rd1-rat a -$elder Raekmafi i.- s. LenM.�aay GH-SM-6Nd lNLSrhsr HiN lwtn pNC-RG
iMl siNr-s.wsewn M r+x,a r,waer f.TMc/
0 Min+.r.rsr+dr iN,rrpny ayrrcffnvroarvv RwgpJ Brunswick (Goalies tool tartans %\ +� � .� � rw„_ev,rn r:ar-co.rsaca rwarli-�eJ
ea+Nf hymn mmpl.r lA!-PAJ ia.-rirclw.rn.. co... c.d... cm.. qsr-mn+asmatr rr.n fxF r�1 qel
ff.danvrrn-tNnd aJ Racks at fargerp uMrrgwn eamPosJlMn � \ \- o s y g{ NT ... list! rra liar Csrr wMrrv+rt frM
NanArtoao.e a(likely Pai-Gondwanerrl / \ < - MrE. rn n f arfnrot,+ssawae, r-!` ' '+' rwrknafrrra�nxwnrAr,. 4ilf lrs�W1 .lino! feA-acl
a mp+r•a 7
0 vrmvkrurphysyy ervnefincrudas Nanrahala - nr�.rwe.aimra. v.arr.ne,fkra.wrretr.e.
w,d erassrownfwmrfknsY Wiggins -Suwannee suture / ' \ -�_�. rw_wn xovarrn nm{rrwwl
Flafform Rocks AAnghanlan staksrmrNa bscvrsdby failed
andy�posMfanol TrNYs+t Jurl3Yk sedYMenlY or iho ,s" \- �� vs vd.ce monwry- "°0vi'+" uri-L++.r�P,+r rA hw,r alcl
0 Cambrian, wdaHefan Svvea G g a gne ; '� - i • , . ,
dasoc to—tentaN r ds bas+n ,! f EAaf coos! ma irc ! «w sect- Yae.rG +Wk suM.pxlr.NMs flaws!
anomely� --+....w € -_4 �' afn-Otte sr>" a.n foe sc-ucl
Rifted Margin Rocks
. resj `• '"e -. � - � � ctlls ': tn..m..fr.a.ykyrecr.mrraav fYcr-. rN n c k r,l r+c wl
Na4ArvrarAmf� Gamtvdan Suwannee tomane (Gondwanan provenance) lt� raFrAJ oar ,.
FarfY (units aad configurations after Thomas, 1989) an) _ %� a , .ram ��� m.r,rr.r+ar Mner PPemnanrsweture- v r *r✓`e kr+�
smnvWn r..s l •9ro•ni er army. aa.A nu
n.mnrnvn
Nc 6 vokmfe roe.ka trreludea Assn _ rp fact
ash more lamnp � Urdavic' Devonian ssdimaraary mcka r \7'J rf��
JVa \ •' •^ .....�. �..,w-wa. en xn a dH. SIe-.LrMbfxJl fS[--NCJ
a arrtlfe 4f h.y. t anlnr!v an rnrA4ws - - r an Warr avda us. /lovnrren nw UaL
f d S4-t c U ramranv, Y grha ranane, •, a x�, r„r...rsnrxrmkrr.pss sat- saw.y... hwrrv/1
avW Sawarown Mopnrefns wmdaw � NnoProfaroaorc-CambrMn NNIc rodcAnic rocky \ n fs 1
p„ra Mounfaln Window Rock, °Artier r r(iaw grsdeJ eomA4+nvnfs pp ` ��' r�'^^ ' roe«xea e.rn drrm sva-sops. Ar.�l.vkf -+ml
EMN rsvo arc depas;ihvn rrrd vofcaniamQ e ,7
v
0
MvW..phvevd PWW-kWrurmfl'J'cavem ra tivdo c-nd4pos,N4n. 2ga 5o sw.rod rn r fat-clan.d.•r m.nr im..d«, tar-vra+vfr+v«kv.�d m.tn•.el
ilrfddM Praf.mi Rakohdas basvmanf and - mntlrw tr.�wm.� n. r..rs r PMu+evi imW.ri. lac-rwtr
- 1.o-a.rGAlr..em.mtpekY Aid..,,(?)—.r(cenfrarAppaanhfanal. 0 100 e•m
Basement Ralcksda R�d.77va b...tern kilometers ��$
P d nra7r Go dwanan atfinfysad an 77"
Pb rC�nr••I
1.0.},2 Ga with oldrrkrhwarrrea. '
CkA.n� k;f.,ndfza f.d by dm*wf" miles 76' 33' 75` 3�e
- iBGrMarsNlRterrane J3"1
'
NOTES:
1. HATCHER, R. D. JR., BREAM, B. R., AND MERSCHAT, A. J., 2007, TECTONIC MAP OF THE SOUTHERN AND CENTRAL APPALACHIANS: A TALE OF THREE OROGENS AND A COMPLETE W ILSON CYCLE, IN HATCHER, R. D., JR, CARLSON, M. P.,
MCBRIDE, J. H., AND MARTINEZ CATALAN, J. R., EDS., 4-D FRAMEWORK OF CONTINENTAL CRUST: GEOLOGICAL SOCIETY OF AMERICA MEMOIR 200, P. 595-632.
TECTONOSTRATIGRAPHIC MAP OF THE
SOUTHERN AND CENTRAL APPALACHIANS
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
DATE
SEPTEMBER 2015
FIGURE
5-1
-ATAWBA COUNTY, NORTH CAROLINA

r�

b) Massive/Plutonic Bedrock

-6100 SYSTEM
Af
Slope Aquifer Boundary and Topograpldc Divide
mmmmmmm Discharge Boundary
- - - Compartment (C) Boundary
..•....•..••.... Water Table
Fractures
Groundwater Flow Direction
NOTES:
1. LEGRAND, H.E. 2004. A MASTER CONCEPTUAL MODEL FOR HYDROGEOLOGICAL SITE CHARACTERIZATION IN THE
PIEDMONT AND MOUNTAIN REGION OF NORTH CAROLINA, A GUIDANCE MANUAL, NORTH CAROLINA DEPARTMENT
OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WATER QUALITY, GROUNDWATER SECTION, 50P.
F)l
PIEDMONT SLOPE -AQUIFER SYSTEM
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
CATAWBA COUNTY, NORTH CAROLINA
DATE
SEPTEMBER 2015
FIGURE
5-5

AN 7S/D
MW-4/MW-4D - ''
V,
11 o
[G_WA"5S/D;
AB-48S/D
AB-16S/D AL-
AL-4D
AB-45S/SLID
AL-2S/D
AB-13S/D
AB-14S/D
AB-1 ZS/SLID
••
40
m q d
NOTES:
1. ASH BASIN WASTE BOUNDARIES AND ASH STORAGE AREA BOUNDARIES ARE APPROXIMATE..
2. ORTHOPHOTOGRAPHY IS FROM INC ONEMAP GIS ONLINE SERVICE.
3. THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCORDING TO THE DEFINITION FOUND IN 15A NCAC 02L.0107(a).
4. DUKE ENERGY PROPERTY BOUNDARY WAS SUPPLIED BY DUKE ENERGY REAL ESTATE.
5. BASED ON GEOLOGIC MAP OF THE CHARLOTTE 1° X 2° QUADRANGLE, N.C. AND S.C. (GOLDSMITH et al. 1988; Modified by HDR 2015).
6. SERVICE LAYER CREDITS: INC ONEMAP, INC CENTER FOR GEOGRAPHIC INFORMATION AND ANALYSIS, INC 911 BOARD.
IPhs i bgf
w �
BG-2S/BR
�r
LD
;4 �
mqd�e Zbs
{
SCALE (FEET)
500 0 500 1,000
MW-10S/D
bgf y,
F)l
}�
N
Legend
GEOLOGY
(IPhs) High Shoals Granite (Pennsylvanian) -
Very light gray, coarse -grained porphyritic, well -
foliated, commonly gneissoid biotite granite or
granitic gneiss.
(Zbs) Quartz-sericite Schist - Very fine to
medium -grained quartz-sericite schist and
phyllite; very light gray, light -bluish -gray, light -
brown, or yellowish -gray; composed largely of
quartz (typically >50%) and sericitic white mica
(muscovite and paragonite); accessory minerals
may include chloritoid, biotite, pyrite, hematite,
kyanite, andalusite, sillimanite, staurolite, garnet,
oligoclase or albite, chlorite, tourmaline, zircon,
and graphite
(bgf) Fine-grained Biotite Gneiss - Dominantly of
granodioritic composition; probably
metamorphosed dacitic volcanics
(mqd) Metamorphosed Quartz Diorite and
Tonalite - Gray, usually medium- to coarse -
grained, generally foliated rock composed
dominantly of plagioclase, quartz, biotite,
hornblende, and epidote; biotite, hornblende, and
epidote commonly associated in clots replacing
original mafic phenocrysts; clots may be smeared
out, thus defining foliation
LITHOLOGY IN BORINGS
■ Biotite Gneiss (IPhs)
❑ Granite (IPhs)
■ Quartz -Schist (Zbs)
❑ Quartz-Sericite Schist (Zbs)
C Biotite Gneiss (bgf)
❑ Biotite Schist (bgf)
■ Meta -Quartz Diorite (mqd)
— — — — CONTACTS -APPROXIMATE
DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
—COINCIDENT WITH DUKE ENERGY
PROPERTY BOUNDARY
SITE GEOLOGIC MAP
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
CATAWBA COUNTY, NORTH CAROLINA
DATE
SEPTEMBER 2015
FIGURE
6-1

IIIfIII I IIIIIIIIIIIIIIIIIfir InIfIII inIellfIfIIIIifIIfIel1 IIIIIIIIIIfIInIIItInIIlenIII14 fII1 IIIIfIIIIIIIIIIIItIIIfIy— IIIIIIleIlIIeleIIIIIIIfII IIIIIIIIIIIIIIeIIIIII16 IIfIIAll I rgerf IIIfIIle IIIIellIIIIIIIIIIIi1% 1 IIIIelllef,f, 7 IIIiIIIInIIIlInA 9PIP IIIII16 IIeII IIIIin 41 IfIIIIIIIIfItllIfIfelIIItItIIIIeIIlIIIfIt II1 4 IllfeeIIIeenfIIIIIIIit,
J6
•
Iif n, ItIIIIIIII IIIIIIIIIIIIJ6 IIIIIIV, II % IIIIIIIitIIIfill IfI.1IIIIfIIffIIt. I' 4 II ell, I ell ll11 IIellIftire Ir III,,I I IInIelIetIIIIIIIIIIIoff IleIIllIllIIlettIIfIIIIInIIIIIIIIIIleIIfIfIIIIIIfIIeIIIIIIIfnItIIIIIIIIIIIIIIeellIIIItIIIIIIIIIIIfIIIIIIIIInIIleIfIIII1. IIifIfInIIfIre am I IF
Ffleffra IIIllIIIIIIIIIIIIFp IfIIIIIIIIIIIle Ie vwl IIIIII4j IfIIIleIIIIn1, I IIIIIIIIfeIIIfIIIIIIkL IIfIellIIIfII IIIIIrIfILj .kL IIInell40

NOTES:
1. BASE MAP FROM LAKE NORMAN NORTH N.C., TROUTMAN N.C., DENVER N.C., AND CATAWBA N.C. USGS 1:24,000 7.5-MINUTE TOPOGRAPHIC QUADRANGLES
TOPOGRAPHIC LINEAMENTS
AND ROSE DIAGRAM
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
CATAWBA COUNTY, NORTH CARODNA
DATE
SEPTEMBER 2015
FIGURE
6-3

NOTES:
1. PHOTOMOSAIC OF RIVERBEND PERFORMED WITH A LIETZ SOKKIA MS-27 MIRROR STEREOSCOPE WITH MAGNIFYING BINOCULAR EYEPIECE
2. AERIAL PHOTOGRAPHY PROVIDED BY DUKE ENERGY (FROM WSP(, 9X9 INCH GRAYSCALE CONTACT PRINTS, 1"=600", DATED 04/17/2014
F)
AERIAL PHOTOGRAPHY LINEAMENTS
AND ROSE DIAGRAM
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
C:ATAWBA COUNTY, NORTH CARODNA
DATE
SEPTEVEER 2015
FIGURE
6-4

i
M M MM M
W MVI M X
500 0 500 1,000
F)lM M _M
SCALE (FEET) M M M M
CATAWBA COUNTY, NORTH CAROLINA
LEGEND
APPROXIMATE GROUNDWATER FLOW DIRECTION
ASH BASIN ASSESSMENT GROUNDWATER
MONITORING WELL
ASH BASIN COMPLIANCE GROUNDWATER
MONITORING WELL
ASH BASIN VOLUNTARY GROUNDWATER
MONITORING WELL
EXISTING LANDFILL GROUNDWATER MONITORING
WELL (ASH LANDFILLS AND FGD RESIDUE
LANDFILL)
WATER TABLE CONTOUR LINE
ASH BASIN COMPLIANCE BOUNDARY
_ ASH BASIN COMPLIANCE BOUNDARY COINCIDENT
WITH DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
- - - DUKE ENERGY PROPERTY BOUNDARY
LANDFILL COMPLIANCE BOUNDARY
LANDFILL/STRUCTURAL FILL BOUNDARY
STREAM
1) W.E. INDICATES WATER ELEVATION
MIX
DATE
SEPTEMBER 2015
FIGURE
6-5

f
500 0 500 1,000
SCALE (FEET)
FEZ
W MVI M X
M M _M
M M M M
CATAWBA COUNTY, NORTH CAROLINA
LEGEND
APPROXIMATE GROUNDWATER FLOW DIRECTION
ASH BASIN ASSESSMENT GROUNDWATER
MONITORING WELL
ASH BASIN COMPLIANCE GROUNDWATER
MONITORING WELL
ASH BASIN VOLUNTARY GROUNDWATER
MONITORING WELL
GROUNDWATER CONTOUR LINE
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENT
WITH DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
- - - DUKE ENERGY PROPERTY BOUNDARY
LANDFILL COMPLIANCE BOUNDARY
LANDFILL/STRUCTURAL FILL BOUNDARY
STREAM
1) W.E. INDICATES WATER ELEVATION
DATE
SEPTEMBER 2015
FIGURE

l�.
o C[
f
M MM
W MVI M X
500 0 500 1,000
F)lM M _M
SCALE (FEET) M M M M
CATAWBA COUNTY, NORTH CAROLINA
LEGEND
APPROXIMATE GROUNDWATER FLOW
ASH BASIN ASSESSMENT GROUNDWATER
MONITORING WELL
GROUNDWATER CONTOUR LINE
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENT
WITH DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
- - - DUKE ENERGY PROPERTY
LANDFILL COMPLIANCE BOUNDARY
LANDFILL/STRUCTURAL FILL
STREAM
1) W.E. INDICATES WATER ELEVATION
DATE
SEPTEMBER 2015
FIGURE
6-7

500 0
500 1,000
,5 T
R R
R R R
R R R R
J UY/ J
RR R R R R R
Analyte
NC 2L
Groundwater or
IMAC'
Antimony
1*
Arsenic
10
Barium
700
Beryllium
4*
Boron
700
Cadmium
2
Chloride**
250,000
Chromium
10
Cobalt
1*
Copper"
11000
Iron
300
Lead
15
Manganese
50
Mercury
1
Nickel
100
Nitrate* *
10,000
Nitrite as N* *
1,000
Selenium
20
Sulfate* *
250,000
Thallium
0.2*
Total Dissolved Solids**
500,000
Vanadium
0.3*
Zinc* *
1000
* Interim Maximum Allowable Concentration (IMAC)
** Unit reported in mg/L in standard, converted here
to pg/L to match units displayed on figure.
All units shown in pg/L.
1 - North Carolina 15A NCAC 02L.0202 Groundwater
Standards (As of 4/2013). Interim Maximum Allowable
Concentration shown where no standard is available
JJ J
`JJ J J J J J J
vJ J J J J
X1 J J J J
J J J J
J J J J J
g J J J
J
EN
J pp

500 0 500
1,000
0
P P
0
P P P P PM P
P
P P P
1
Analyte
NC PSRG Ind'
NC PSRG Prot GW'
Aluminum
100,000
NS
Antimony
94
0.9
Arsenic
3
5.8
Barium
44,000
580
Beryllium
460
63
Boron
46,000
45
Cadmium
200
3
Chromium*
100,000
360 000
Cobalt
70
0.9
Copper
9400
700
Cr(VD
6.3
3.8
Iron
100,000
150
Lead
800
270
Manganese
5 200
65
Mercury
8
1
Molybdenum
1,200
INS
Nickel
4 400
130
Nitrate
100,000
INS
Selenium
1,200
2.1
Silver
1 200
3.4
Strontium
100,000
INS
Thallium
2.4
0.28
Tin
100,000
10,000
Vanadium
1,200
6
Zinc
1 70,000
1
1,200
* Chromium standard shown is for Chromium III for comparison.
No available standard for Total Chromium
All units shown in mg/kg.
1- North Carolina DENR Inactive Hazardous Sites Branch - Preliminary Soil
Remediation Goals (PSRG) Table (March 2015). Industrial Health Based Soil
PSRG and Protection of Groundwater PSRG shown for comparison.
NOTES:
J = ESTIMATED CONCENTRATION
J+ = ESTIMATED CONCENTRATION BIASED HIGH
J- = ESTIMATED CONCENTRATION BIASED LOW
DNE = DID NOT EXCEED
PSRG: PRELIMINARY SOIL REMEDIATION GOAL
ft: FEET
mg/kg: MILLIGRAMS PER KILOGRAM
BOLD: EXCEEDS INDUSTRIAL HEALTH STANDARD
UNDERLINED & ITALICS: EXCEEDS PROTECTION OF GROUNDWATER
BOLD, UNDERLINED & ITALICS: EXCEEDS BOTH INDUSTRIAL HEALTH
STANDARD & PROTECTION OF GROUNDWATER
ONLY CONSTITUENTS EXCEEDING THEIR REPECTIVE
LABORATORY REPORTING LIMIT ARE SHOWN
GROUNDWATER ASSESSMENT MONITORING
WELL
Q� ASSESSMENT SOIL BORING
—ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENT
- - - WITH DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
--- DUKE ENERGY PROPERTY BOUNDARY
--- LANDFILL COMPLIANCE BOUNDARY
— LANDFILL/STRUCTURAL FILL BOUNDARY
— — STREAM
SEPTEMBER 2015
FIGURE
SCALE (FEET)
CATAWBA COUNTY, NORTH CAROLINA
H-

IIIfIII I IIIIIIIIIIIIIIIIIfir InIfIII inIellfIfIIIIifIIfIel1 IIIIIIIIIIfIInIIItInIIlenIII14 fII1 IIIIfIIIIIIIIIIIItIIIfIy— IIIIIIleIlIIeleIIIIIIIfII IIIIIIIIIIIIIIeIIIIII16 IIfIIAll I rgerf IIIfIIle IIIIellIIIIIIIIIIIi1% 1 IIIIelllef,f, 7 IIIiIIIInIIIlInA 9PIP IIIII16 IIeII IIIIin 41 IfIIIIIIIIfItllIfIfelIIItItIIIIeIIlIIIfIt II1 4 IllfeeIIIeenfIIIIIIIit,
J6
•
Iif n, ItIIIIIIII IIIIIIIIIIIIJ6 IIIIIIV, II % IIIIIIIitIIIfill IfI.1IIIIfIIffIIt. I' 4 II ell, I ell ll11 IIellIftire Ir III,,I I IInIelIetIIIIIIIIIIIoff IleIIllIllIIlettIIfIIIIInIIIIIIIIIIleIIfIfIIIIIIfIIeIIIIIIIfnItIIIIIIIIIIIIIIeellIIIItIIIIIIIIIIIfIIIIIIIIInIIleIfIIII1. IIifIfInIIfIre am I IF
Ffleffra IIIllIIIIIIIIIIIIFp IfIIIIIIIIIIIle Ie vwl IIIIII4j IfIIIleIIIIn1, I IIIIIIIIfeIIIfIIIIIIkL IIfIellIIIfII IIIIIrIfILj .kL IIInell40

HDR Engineering, Inc. of the Carolinas
N.C.B.E.L.S. License Number: F-0116
440 S. Church Street, Suite 900
Charlotte, NC 28202-2075
704.338.6700
ISSUE DATE DESCRIPTION
PROJECT MANAGER CHAD HEARN, PE
DRAWN BY:
-
DESIGNED BY:
-
CHECKED BY:
-
APPROVED BY:
-
PROJECT NUMBER
000000000246409
NOT FOR
CONSTRUCTION
DUKE ENERGY CAROLINAS,LLC
>, DUKE
ENERGY..
CATAWBA COUNTY
MARSHALL STEAM STATION
COMPREHENSIVE SITE
ASSESSMENT
NORTH CAROLINA
CROSS SECTION A -A'
SOLID MATRIX ANALYTICAL RESULTS
0 1" 2° FILENAME I FIGURE 8-3.1.DWG
SCALE I AS NOTED
SHEET
FIGURE 8-3.1

HDR Engineering, Inc. of the Carolinas
N.C.B.E.L.S. License Number: F-0116
440 S. Church Street, Suite 900
Charlotte, NC 28202-2075
704.338.6700
ISSUE DATE DESCRIPTION
PROJECT MANAGER CHAD HEARN, PE
DRAWN BY:
-
DESIGNED BY:
-
CHECKED BY:
-
APPROVED BY:
-
PROJECT NUMBER
000000000246409
NOT FOR
CONSTRUCTION
DUKE ENERGY CAROLINAS,LLC
�(` DUKE
ENERGY..
CATAWBA COUNTY
MARSHALL STEAM STATION
COMPREHENSIVE SITE
ASSESSMENT
NORTH CAROLINA
CROSS SECTION A -A'
SOLID MATRIX ANALYTICAL RESULTS
0 1" 2° FILENAME I FIGURE 8-3.2.DWG
SCALE I AS NOTED
SHEET
FIGURE 8-3.2

HDR Engineering, Inc. of the Carolinas
N.C.B.E.L.S. License Number: F-0116
440 S. Church Street, Suite 900
Charlotte, NC 28202-2075
704.338.6700
ISSUE DATE DESCRIPTION
PROJECT MANAGER CHAD HEARN, PE
DRAWN BY:
-
DESIGNED BY:
-
CHECKED BY:
-
APPROVED BY:
-
PROJECT NUMBER
000000000246409
NOT FOR
CONSTRUCTION
DUKE ENERGY CAROLINAS,LLC
>, DUKE
ENERGY..
CATAWBA COUNTY
MARSHALL STEAM STATION
COMPREHENSIVE SITE
ASSESSMENT
NORTH CAROLINA
CROSS SECTION A -A'
SOLID MATRIX ANALYTICAL RESULTS
0 1" 2° FILENAME I FIGURE 8-3.3.DWG
SCALE I AS NOTED
SHEET
FIGURE 8-3.3

HDR Engineering, Inc. of the Carolinas
N.C.B.E.L.S. License Number: F-0116
440 S. Church Street, Suite 900
Charlotte, NC 28202-2075
704.338.6700
ISSUE DATE DESCRIPTION
PROJECT MANAGER CHAD HEARN, PE
DRAWN BY:
-
DESIGNED BY:
-
CHECKED BY:
-
APPROVED BY:
-
PROJECT NUMBER
000000000246409
NOT FOR
CONSTRUCTION
DUKE ENERGY CAROLINAS,LLC
>, DUKE
ENERGY..
CATAWBA COUNTY
MARSHALL STEAM STATION
COMPREHENSIVE SITE
ASSESSMENT
NORTH CAROLINA
CROSS SECTION A -A'
SOLID MATRIX ANALYTICAL RESULTS
0 1" 2° FILENAME I FIGURE 8-3.4.DWG
SCALE I AS NOTED
SHEET
FIGURE 8-3.4

HDR Engineering, Inc. of the Carolinas
N.C.B.E.L.S. License Number: F-0116
440 S. Church Street, Suite 900
Charlotte, NC 28202-2075
704.338.6700
ISSUE DATE DESCRIPTION
PROJECT MANAGER CHAD HEARN, PE
DRAWN BY:
-
DESIGNED BY:
-
CHECKED BY:
-
APPROVED BY:
-
PROJECT NUMBER
000000000246409
NOT FOR
CONSTRUCTION
DUKE ENERGY CAROLINAS,LLC
�(` DUKE
ENERGY..
CATAWBA COUNTY
MARSHALL STEAM STATION
COMPREHENSIVE SITE
ASSESSMENT
NORTH CAROLINA
CROSS SECTION B-B'
SOLID MATRIX ANALYTICAL RESULTS
0 1" 2° FILENAME I FIGURE 8-4.1.DWG
SCALE I AS NOTED
SHEET
FIGURE 8-4.1

1 1 2
3
WEST
850
:I•
750
N
4-
z 00
0
Q W
>
w �
J
w 0
II
700 LLJ
Z
J
U
:� ,19
SB-1
SB-15
Sample Depth (ft)
3-5
82.5-83.5
86.5-97.5
92-93
Ash
Ash
Soil
Soil
Analyte (mg/kg)
Arsenic
BZZ
jy.7
3.51
7
Cobalt
f.S
io
4�.7
5-j
Iron
23500 J-
1313114
2�4
2a 600
Manganese
DNE*
iff
1 2j5
Seleniuml
jV2.
78J
I DNE*
I 59J
Vanadium
AB-2S
Sample Depth (ft)
6-7
31-32
Soil
Soil
Analyte (mg/kg)
Cobalt
3.4J
7.4
Iron
10,600
16,100
Vanadium
21.7
28.7
Manganese
125
408
2000 2200 2400 2600 2800 3000 3200
HDR Engineering, Inc. of the Carolinas
N.C.B.E.L.S. License Number: F-0116
440 S. Church Street, Suite 900
Charlotte, NC 28202-2075
704.338.6700
ISSUE DATE DESCRIPTION
AB-2S
AB-2D
3400
DISTANCE (ft)
SECTION
B
SCALE: HORIZ 1 "=120' FIG 8-2
VERT 1 "=30'
PROJECT MANAGER CHAD HEARN, PE
DRAWN BY:
-
DESIGNED BY:
-
CHECKED BY:
-
APPROVED BY:
-
PROJECT NUMBER
000000000246409
LAKE NORM
3600 3800 4000 4200 4400 4600
NOT FOR
CONSTRUCTION
DUKE ENERGY CAROLINASILIC
�(` DUKE
ENERGY..
CATAWBA COUNTY
MARSHALL STEAM STATION
COMPREHENSIVE SITE
ASSESSMENT
NORTH CAROLINA
B'
EAST
850
:ek
750
700
650
ANALYTE
NC PSRG Ind'
NC PSRG Prot GW'
ALUMINUM
100,00
NS
ANTIMONY
94
0.9
ARSENIC
3
5.8
BARIUM
44.000
580
BERYLLIUM
460
63
BORON
46.000
45
CADMIUM
200
3
CHROMIUM*
100,000
360,000
COBALT
70
0.9
I COPPER
700
9.400
Cr(VI)
6.3
3.8
IRON
100,000
150
I LEAD
800
270
I MANGANESE
5,200
65
MERCURY
8
1
MOLYBDENUM
1,200
NS
_
NICKEL
4,400
130
NITRATE
100,000
NS
SELENIUM
1,200
2.1
SILVER
1,200
3.4
STRONTIUM
100.000
NS
THALLIUM
2.4
0.28
TIN
100,000
10.000
VANADIUM
1,200
6
ZINC***
70,000
1,200
*Chromium standard shown is for Chromium III for
comparison.
No available standard for Total Chromium.
All units shown in mg/kg.
1 — North Caroilina DENR Inactive Hazardous Sites
Branch — Preliminary Soil Remediation Goals
(PSRG) Table (March 2015). Industrial Health
Based Soil PSRG and Protection of Groundwater
PSRG shown for comparison.
NOTES:
U = NOT DETECTED ABOVE LABORATORY REPORTING
LIMIT
J = ESTIMATED CONCENTRATION
<3.0 = LESS THAN LABORATORY REPORTING LIMIT
J+ = ESTIMATED CONCENTRATION BIASED HIGH
J— = ESTIMATED CONCENTRATION BIASED LOW
? = ESTIMATED TRANSITION ZONE (TZ) BEDROCK
(BR) CONTACT
PSRG: PRELIMINARY SOIL REMEDIATION GOAL
FT: FEET
MG/KG: MILLIGRAMS PER LITER
juG/L: MICROGRAMS PER LITER
BOLD: EXCEEDS INDUSTRIAL HEALTH STANDARD
UNDERLINED & ITALICS: EXCEEDS BOTH INDUSTRIAL
HEALTH STANDARD & PROTECTION OF
GROUNDWATER
LEGEND:
WATER TABLE SURFACE
ASH
FILL
UNCONSOLIDATED SEDIMENTS
M1
M2
TZ
BR
CROSS SECTION B-B'
SOLID MATRIX ANALYTICAL RESULTS
0 1" 2,, FILENAME FIGURE 8-4.2.DWG
SCALE AS NOTED
SHEET
FIGURE 8-4.2
C
C
u

HDR Engineering, Inc. of the Carolinas
N.C.B.E.L.S. License Number: F-0116
440 S. Church Street, Suite 900
Charlotte, NC 28202-2075
704.338.6700
ISSUE DATE DESCRIPTION
PROJECT MANAGER CHAD HEARN, PE
DRAWN BY:
-
DESIGNED BY:
-
CHECKED BY:
-
APPROVED BY:
-
PROJECT NUMBER
000000000246409
NOT FOR
CONSTRUCTION
DUKE ENERGY CAROLINAS,LLC
DUKE
ENERGY.,
CATAWBA COUNTY
MARSHALL STEAM STATION
COMPREHENSIVE SITE
ASSESSMENT
NORTH CAROLINA
CROSS SECTION C-Cl
SOLID MATRIX ANALYTICAL RESULTS
0 1" 2" FILENAME I FIGURE 8-5.1.DWG
SCALE I AS NOTED
SHEET
FIGURE 8-5.1

HDR Engineering, Inc. of the Carolinas
N.C.B.E.L.S. License Number: F-0116
440 S. Church Street, Suite 900
Charlotte, NC 28202-2075
704.338.6700
ISSUE DATE DESCRIPTION
PROJECT MANAGER CHAD HEARN, PE
DRAWN BY:
-
DESIGNED BY:
-
CHECKED BY:
-
APPROVED BY:
-
PROJECT NUMBER
000000000246409
NOT FOR
CONSTRUCTION
DUKE ENERGY CAROLINAS,LLC
DUKE
ENERGY
CATAWBA COUNTY
MARSHALL STEAM STATION
COMPREHENSIVE SITE
ASSESSMENT
NORTH CAROLINA
CROSS SECTION C-Cl
SOLID MATRIX ANALYTICAL RESULTS
0 1" 2" FILENAME I FIGURE 8-5.2.DWG
SCALE I AS NOTED
SHEET
FIGURE 8-5.2

HDR Engineering, Inc. of the Carolinas
N.C.B.E.L.S. License Number: F-0116
440 S. Church Street, Suite 900
Charlotte, NC 28202-2075
704.338.6700
ISSUE DATE DESCRIPTION
PROJECT MANAGER CHAD HEARN, PE
DRAWN BY:
-
DESIGNED BY:
-
CHECKED BY:
-
APPROVED BY:
-
PROJECT NUMBER
000000000246409
NOT FOR
CONSTRUCTION
DUKE ENERGY CAROLINAS,LLC
DUKE
ENERGY.,
CATAWBA COUNTY
MARSHALL STEAM STATION
COMPREHENSIVE SITE
ASSESSMENT
NORTH CAROLINA
CROSS SECTION C-Cl
SOLID MATRIX ANALYTICAL RESULTS
0 1" 2° FILENAME I FIGURE 8-5.3.DWG
SCALE I AS NOTED
SHEET
FIGURE 8-5.3

1 4)
48 A- " 00
1 2 1 88 1-5 24 148 1 -)
234 51 46 1,21 A.).
1 ' 12(A.
Average arsenic concentration (gg/L)
0.5-1.0
1.1 - 2.5
2.6--5.0
17
� 1
i
17(p
4
144 6
4
1 5
PE SPI
5el 8 o Approximate location of Marshall Steam Station
MEAN CONCENTRATION BY COUNTY OF ARSENIC IN NC PRIVATE WELL WATER IN 2009 (Ng/L)
ADAPTED FROM SANDERS ET AL. (2011)
FEZ
31 11
23. 4
63
ARSENIC CONCENTRATIONS IN GROUNDWATER
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
CATAWBA COUNTY, NORTH CAROLINA
DATE
SEPTEMBER 2015
FIGURE
10-1

ri •yLr A..�. 1-.� y5, .Jy. w• • •., •).
,� k!.0 '-p ,1. Y�•1Y.•�' .+!'. i, y:N„• .( .r "�•. 'L ,y "'k+. i".. '•r 1� r' ,.It I / 'l �� _ t y
`.r..•• �Mr'R'. �Ty j Y' '} � x 'r. ,. r ;+ <. �" `4*�:Z;'.,. 1q .1. k 'j �,,,h. _+ � „�d•,
,a N�� t. ��' �" >, :a tf�+*'�y.'1t r f ��'' a r''y" �. � 1 -' -ri M�� �j'I �,7F,�., ��. ''�\ • t I 'r°
v., L s - ,�' i" .. �•�,•.. 'd �r:r� , ;�, �k '� S ! C� r !f+rd+";;'�' ss 1 :.�"&+'7r '; • •�, *�.
:�¢ Y r•1 h h `� � .7' 1' •'Mt C ^ .�. ` _q -, '< �t i! 1�•��`. \ ' 'OOL-i
� ,.• Tr 7 p;� +. _` • �� - � � �, �a . , r�,r,. 3 1 • t X -'; v � t. i ,' r.�- �i`
R 1:P'!rJ'e F r )•• 6'_.-�' /. �4'� ,•�ii•;� ,i 7� r ., y�y ` - ��•. 4':,991.
�. � :ti a; + �. r •+� ^�Ak• 4v � . •!' '° C, ~� ' 'ice �r• iJ.:"���C1'�,
•-,.�-', F1 L�.P'i -.). - .- �® `-�,•✓`` y _r 1kR, i
. M
.��py y:4r a •�
�� 4 '�i: ', i•+,' .IMI .. ♦,tir,' V+ �d�l' ^.� , �r '7 p r h ,}( :�Q' ...0'.f:.. :�d.',
r i ..��T T .°► '. a �{ j�Ne� 1' 't'
f✓ .;_a �. • �IaA._. `., _1 r �`i toy, � tC`s 1•." ''aPi�: V`,R-.�"t v.
- '.•. ,�. tyy�{t, yt+j'1, .r t ,/ '`4 .'/''9�'��. • -:f� . `. � .-♦7P' , j i '�'7 -,� S •- "ice � ai�� +�•��• ..,. �,4 '
ET
,f.`�,' 1..�) i'W i �• }� t' � ,L Y' 'Q' -i -- -x: ,��t• �-' �., - .rrytTil
Y;+t,
'•R'. M' JY i� r�y�Y �+ t ^G./ •y1� .M '�' i � , ^t �'�4'.�y�, w l� .,5 ��� .�` r' /'.^ � r} t 1 � ' a"• / ►,_ � l,, � Y� • ��
�'1 ✓ 1 �` .r'`0� ,)� ,�?; �,�, �� � J-' • %l.F��I" !/ 1'!''�,// %� / ;J' ✓ )^ r .+��.:'i*" L A �. y r A � _ t* �% :.e
.;i' t'+k.: �{�`1r. �,�'�• ''� .t.. 1 ,1 v�'9 �GLp� j,� _ 9 r++.' �(1` � 1' t� Y� �� �� � � �,� t..
y._,,1 M•+tr� • .� ``r,r.. S ;Ip,. i t1% '�` �►,^"1iv•R' t F••LL�y{ •y y' _M' t;i ,'/�lq. L• r '.rii��l...
�,y1 ••jja P.Y if= i T v Set. 15; 7 1!Ts+ .MI
. {:�.,.:►` y�-,4�"'•. '. 3.(�},e"�(}' ti't'�jj -Yi j:. :.a° X.'. Yf� ;:t' .t ^� " .. :►•- _ l.y. yr, �� r '; �.^�t..f �� f.••1 !k T � •
."E•-i�'%y MJ Z.
.1�•'J - 'L'' c`` `•...., a 'F �. •+ �F' i. rt�t�' .`r, •. � � .� t 1` Y.: � ',f y� 'c �,
��1• yPIN
•?-• •f'j ' %.. 'Jt�♦; ns •ir '�� r r' `( "��. '�' ,:1:. •-S '� �;` - •..�' : y±? - •�' .c♦ �' ��:•,
F- � ; 4 1, s • ,,,, • ' '• • • • � • � � ® '' .� ;: , ?`• t '�` ; #�q,� ,�-•.t �'~.•ice`
\ l � ,�y, .�� n r rh' r 1�r• ' .•l1. ` y1�1„ � ,.y�''jy Y"1 .,
_ v1f4r .1� �ti + •^� '�� i^ .�k • _ 'T `�• �� �4.• �i� .f � � � • • �r •tr�"�' k y` .:^ P� �+�,+ .j►yi,r S•u•�►il4t.� �.�- t
�� rt _ T, , ' 11 �y '�f � , S ,r {' ;�t� • � _•. - y1� �, z��.l � • '"' �� � j' t`i•/i .+ �� .� `•��.
. - 1. r - y, _ I !. 1Y•;" �uy� r i i
•,F!< #'✓); 'r i t:j � ram' ,{ � � �`�'�.1M <- ., � f� 'R Y. `°-- �'' "i Y. •.. �.N �.. .•.J� � ��y���� -•.` '7 ;. � .�r, x��.
� l / A w � ? .vf ..I'� yi, 1�flti., �, !' M _ .� • i ••• --- ry
4l TT T• \. ! � � - �r ' ,' 1.�' � i�� Rr i, "r_• iy' ,.d"�+ �..',2
'1�l .(" y �.} 1. �4. +rR'-I'4�'',6y' 'i/�•` ,w �r ;3.i. ji. r •p - 1' .A�y "�'y - •y . CS! sy,• r 'y ` .13�.j f'°" /yr' .,
_ � r .y � ` '.t T•,'� i p` � C-V I�s- .•7, � 1 1 • � w-J ��` r�; ,.ti i:v'� r '� S i. .; !f-
,: x '1, � r .. .fir , , .�i^, , r WK.. � - •�. r �. < , i •+ r '
� '-�►r�}h�v r:,lr / '�+� �� J // / � � / Y � /� / �/, (/ %''/ �� • i� r .i h' v ri yL, �` r1�' :�y� 1 '' a . ��• ' ♦rr��
�#~� Y. ,r'a a -�, .r -�• w` '+ .l ,yP, rf. r..il�'I r .k -s 1 :v• �ti �•_ - ,.•S\(•, •
y
ti.' •.k ,♦ h• r =1{ lt'^r. ZOO,.y, .d•. .L r+
_ �' 4i � • S � ~ .i'.� tfeg f,. � 'r fv�':i.. ' 1t+ •X .e • - - � ij. '1 / '� Ord �.
w N,f.'i., %,� ;;'i"" 'y(4':. ^Z o i'. _ e 7';•.v ^ +� .`.! -o viAtV
. ✓ 1 r 1 > •\i� ��,
.,¢v +' � �f. -! /''-�"+ •?'fit-� a �,-� �. � .,:.: r j ,' H�
_f: ol:
Ne
lk
' •� r f.;t _... JXK!� �f T`•.rF' `..� i ed� ` Yet � i c• !t, a +t Yr- u, ` - • •
1 � •
"1<%.: •� r�L - `'4 ��� .� t OP "r
� l�" ,t' � � Y ��. � '- :�y,�s•� fir.. 'x� ��-• �ti5� ' `i � I� I < - !E SI • 11 1
�•.,y�s.�c YJ .•nP �Fi -.t♦ i -1` a g'L!, r r , ,It• ;i.
- ��'§�v''�+. :9k:'-f'- '�"': ` k �_ � t� L ` ff .:��' -1,. ' G' • r < A'[ ' k:�, _ `'�'t Y° -- - - _ d _ '.� % � • 1 • 1 1
� _ ` ,• :y � � � Itw ...* �' � a . � �,. � � YI^ q^1 �' � t • � r,, .. � � � 1 .1 11

once ntration of Iron Detected 'in N C Private WelI Water (pg/L), Average 2010
Ail
once Itlratlon of iron detected in private weI Is (g f l.)
—� 50.00 300.00
300.01 - ().101D
5 0.01 1,000.00
- 1,000.0.1 12 000.DQ
- 12.000.01 - 1;100,356-. 5
A National Priorities List saes repo Ill ng voi l
O Approximate location of Marshall Steam Station
MEAN CONCENTRATION BY COUNTY OF IRON IN NC PRIVATE WELL WATER IN 2010 (Ng/L)
NORTH CAROLINA DEPARTMENT OF HEALTH AND HUMAN SERVICES
FEZ
IRON CONCENTRATIONS IN GROUNDWATER
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
CATAWBA COUNTY, NORTH CAROLINA
DATE
SEPTEMBER 2015
FIGURE

Manganese Concentrations in Well Water
USGS NURE Wells
ippo
tit • • " { �'. • . a � i + •J a • ♦ • • , • + h • . _ � � !'?.•1
•
,
� s e
,
Sail 'System
F
Brackish and Freshwater Marsh stern
y
Loeser Coastal Plain - 'lcornico and Talbot SyStern
{r � _•'{g=
•... . �, _�,�
�
Broad Basins, Fewer Terraces and Flood Plain System
Middle Coastal Plain System
� «
,5�=• i '_'��, ,i � ��
: ""i•
'" Mn ppb�
Carolina Slate Bell System
Mixed Fels c and Mak System
.,.:���•
Felsic Crystalline System
Organic Sops Sysrtern
0 40 - 100 0
- Highs Mwntapn System
Ouster Banks System
1 Old. � - 2OO
Large Rrver Valleys and Flood Plain System
S,ardhills Systems
a 200-1 - 300.0
- Low and Interniedote Mouintair System
Triassic Basin System
0-1 - SOO 0
- Lower Coastal Plain - Pamlico System
_ Upper Coastal Plain and Piedrixxpi ,System
� 5001 1 - 1OOO.d
Approximate location of MSS
MANGANESE CONCENTRATIONS IN GROUNDWATER AND SOIL REGIONS OF NORTH CAROLINA
(GILLESPIE 2013)
FEZ
MANGANESE AND SOIL REGIONS
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
CATAWBA COUNTY, NORTH CAROLINA
DATE
SEPTEMBER 2015
FIGURE
W101

f•. r.. .'.. J '.Y ,a )•rat ;�, .Y� .^'rY .,r,'�. �. 1. ,�� ��yry^� .•4, r: s
°'' r - •%"bj' ar,: a -'� �„ x a � T r y r*,� �•+• • I / , �_ � : '/� c
-A ' t I �•
� �. 'k,Y r' .�.L �;f ���, > :r'�� w� a fir % r >..�'� •�'Y� �,-�i..,���
•=.: t- ?> {31 - _ "' 4,X.� _ • •i` r''�'-' �._ �, C ,mot` .� - -
r._ �' II,�I•'. -i "�� � e1: � Y - -Y �„ �..
t *01
f , '44' s•'. y ' - .r �, P �• ' � i� .'t'� -,'. �,l+10`,�r h _'ii�ir' '�'R� _ '�i.'_
�Ia �'�r. r ,, I� � 't e •� • _ t ''. .r � , � �. � I ' t � xY; '. Y" _
;• '.'i -','r, ..,. ..• A Y: riJ `s'.:�, '..�.J :. .'�.�, yc.' � .. � L� �-' ;►.`+G i%� .'� '., �. r ��
r •.� a
„ '�L�.�,,�.�,M,' ":i . .,.� P., 4� .1•� a�.lt,►;F.ti'," •!».����-,hr.> .� >r S l�: t",:'•f` ,y .t. . 7F i,;�[1'® �s� '•.. ,, r ,�, _r /f�Jy ` - (1 - �.. I a w �. 7: tyty.� � SS" ;t•i � '"•f y(F, _ y t4 r r! `=�`�l-/,}I'. ,#,,, >�t'�.' ,',1�y�y _ p+ .�4'�� ��,
'�! _7�. ►ti'r •' ,- � .. '/�• � 1J U .. . - _ ,i '� � r .. t A, IZ. ,. ' w ;'�• i.+%ti.,� � aiK; ��' �I . J,,..
S ;. >t•' ,�+ y���(•'( • !�?1 ♦( t. �°� ., � � r f
. _'S-«�i y, Y;p ,".� ' 4}', i �,. � '� r -`,r •7' ap' x-„ �'• :a"•�' L 'W.�f','+ � �j ,�'•''"` + •• -1 , � ,, �1,
_,� -� .:.t. _ - .Y!C:.,w �i.'•r� �B.••.7 :'�'`•�° ::,.<_i i �a, .+?e '•°� _,..a -.� ,* � +M. >_,� i � t .� ,�: .is�F � .�
X ' �' "ti.',' ,, �s `y rya _ .,,�„ •�
A-
_`-'d' _ ,i• � -� ,- (`� `,yy���,•• f � � � '� ty 7a ."+f -- 4>d'-x'. • • _ '�-.�'.�... - - �' _ y �. f . ,+c _ � �' - '��•-
� y .�� is .-•r..`�iLA�w`'. - ;o � - f. �` � }. �; . •$�.A ••d".t +' �� r. ,pp,� - ems.. '���• � '� � '� �1 �I,�... .. `,,;• -
er
'.. - � � ,'+- .. ��cy ''':I •�1`�,�.+- � yC _ . � A_. ,:" `� �.�'t•�' - I, r,j1 r y� ,•-.i�♦;`, '#.. �- t,� . • _ I,,'�'q; • � !s •,. ,?�;,� ,,� d.�` �� -
xr� r 'r7+'�'� �„ .`.: 7+�'.:+�.1�,'a' ,� r ^ r«1-, /AI - -r� / •� ' `�i' dl'•I",y
�•.y .�r�0. � tf � Jai ' ti A� y �' � � ,� "• � },' a t•�e 't� p
,'• �° oti �� � airr ! �� F ►�.j, `-'` � � Je .. iaBg" � �����_.�''.'-v'�.lv.� ��f•�,� k Jy�) ti.
�.�, �r ti' �•� ♦ '{,. ` �, .�y _ fl! •. �s+:s . .;Syr ��' t ,,,, 1, n` 's ,1,` �iy r �I' T °- � �' �i y- •k.t,N ��� "'6.4�, I .� f l
r„'� �, i✓: ;.rr k � i . •� t.. ; �,• .,� �',7 3 "r �! i � �., . i• .ram i t?.�r,l,�:
1. 1_ r•.
•
1 a t r
i,i`Z.:• '� :>». �, „ , - •-Ns '..r .7� �. :,a '� y 4 �T _`•�-o -�i i. „ip moral' �.f+ .a ' er..
AL
* .:F. ��,' ,? . �.,', 7 '�_..�. •�.�.��'F •-'�_-" :I���c,�`��,r,�J' ,
�/" f ,l';. : .. � •�'� '( ". .+� �! :"�, }� �y'I/y`p'` - ear i >i- �j �,P y: '�: �7, -. �_-f• 'l+ � f�
7 .1 �• '.f 1 'n,0.. • `,,.,,ys��,®',�,••. ''r/{" ,•i^- f Y �'Y �;.,J�.
'�- .; a, "ti;i'r� .r +. r � 'S{ 'J� :'``./' _ al. � �. :, a, '•1�w..', t����'� ./itY� �,rt�M ,�,•'g�. �"�P.�%+ � ,. �c i
Aw
-,�i,r"w q %E ,'� R• + � i,1f .. [ `"►�, - s ; ��a - o f i. 9r °� -t, �'��' S� h
r �• ` �'• �_ a ,vj'.R� • • • ^ f.i �'_}_ �.~ f e 'e • . " r,.P;'' J y. ..,�: "'V'� j;�. " `r i.,. , ���`a�• �,�,,�� ��E� "� - -`st _. � � � ~ . • r � r'�,'` - rat`. i� �„d, ,,`a. �#i
y r� J 'Po
-, ` s..f+.-
t ,�. - ryi7� r': r-�" '•}y, �"!:a�ii A, i i .y _ "' - `A, .;l ,,i7 l �'3, !"', _ ♦ -. f 1 r !'V f x y `' ♦ �i.rN1`.
✓ �. i ' )• �3'' ma, r 't.��` t. rrg1�L s ,ts 3x
,S r v J / F' '7f !. ,, S.:• t -r,. e - •Z; a i �'!t' .
.r' .. �k.. I �'., -. �. .541.3,�, � A�a � i,l�•'. �',,. .,.-.r, ;7�''�` Y.a�� � � - ;4` , 4Y>; �} , �(, _�« .
_ ;r •.K� �f��e������'1 ti%d `J a+'�,�il�. `�!'A^, `I d 'M.+�, `, r' �3q•,.,. _.'rl' _ %�,',.'i: .,�.�. r y •,v- `��.
♦ �. . •-. r' w �'" r +K "" .�'•"\ r;� •+ .'} y 1y,-4•'�?f y �I' ��'�� . .r: w �f' k•1�-'r, v. � •
-zs Ki ;7r `�t�'3f�_T ♦ ��. '�,k]� - +Se'�•�.1 >r.. _�. _� '-"-1� ,�•,q� ��tP,;, }�� � � .7'M. :♦ �' ���� ,w api � + r rf �� -'a �'• � ter... '.✓�+-
r
xx i • _
�•n �• t + r `'?' „ 1'. .'> " �� ,i. • ",F'W A,�71 r .. �i fi "1 �-R• 3 .�,.".'. "3• . { �` f iv a
_ •t .I�.Y '• �P �. T .y - , A;'r t: fir, 1 ':I- -�,-•�Y-.,• - •,G -N '�♦ "j a•rf ... r'-`<. 1`M' 'A' ;-
-��t E � e ;M� _ ,� . �. Pik', " ;` ,i`r . r. r y, '� r � I,�ry' • • ,.<��
�� ,•� r.4 ,, t: .� 7A; ,, y,�.�w-+ a`';. ; � ,� °,�_, r �t � � -,� r s: �! S • 1 11 1
+} i Y - •� _ �� � ix � � -i yc'<,�',� - $ ''- , -R,d.+'`y.. .. �� _..i 'T:^ - 1: Y..y� � l.�"•
..r 4� s �i r' N �a'+i' � ��,. _N `, w. +��.���� ♦• it 'D�`t"` > .. '� `� � It'.. -
1
_� '.L-. .� ly �i•a • .�,•�( ��.' - � - •st �'r .d ,� �}�. � a<y Y� �{iY, ( •r - - -. �? b � •r ,'� . � ��.� � a
'• "

12DOW
11 Vw
100°W
900W
80`Ub'
70°UV
D.
40" N
30ON
EXPLANATION
TI
Thal I him IT11 _ r 14nri-inn
PERCENTILE mq/kq — -
90 to 100 0.7 to 4.3 /
70 to 90 0.6 to 0.7 It r •
50 to 70 0.5 to 0.6 , 40
40 to50 0.4to0.5
20 to 40 03 to 0.4
10to20 0.2to0.3
0 to 10 <0.1 to 0.2
0 125 250 500 KILOMETERS
. Approximate location of MSS o 125 250 Sao MILES
20ON F-
Base map from U.S. Geological Survey digital data
Lambert Conformal Conic projection
Standard parallels 33'N and 45'N
Central Meridian 96°W
Datum NAD 1983
THALLIUM CONCENTRATIONS IN C HORIZON OF SUBSTRATE
USGS MINERAL RESOURCES DATABASE
FEZ
THALLIUM DISTRIBUTION IN SOIL
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
CATAWBA COUNTY, NORTH CAROLINA
I
DATE
SEPTEMBER 2015
FIGURE

ai •yLr A..�. 1-.� y5, % CF, i'a F.� �a r y r .Jy. w• - • •., y•
,� k!.0 '-p ,1. •1Y.•�' .+!'. i, y:N„• .( .r •. ,y.•r q r' ,�IJ / 'l
�.r..,Y �Mr'R'. �Ty�•��j Y' �} � x 'r. r. r S' < � `4*�:Z;'.,. 1� Yr. k 'j �,,.h. _+ � „n•d •,
w �." $ �• ,� ,,w'4 H: ..�r,Y' ' ti ) "' i� ' � w�•" � `.- ,.t���, ,� " .ri "}tl - '"y` r���ij1�,r� �t •*, �''•'
� � �•' Y• �� #f'+``��••"r y,��� �1:1+ A .1� � •.t': r.�<Y `..� , T!� s .��1'� L: �^.+S a' � �I �~ �Y` • �' 'd 'l.f.
.Y y ,QI yv�ztL,
� !r-:rL sF.. '+-� '�•' 3l� a►� ��„ t f>� 'd ter. �' � , J ; } ^;�;f '�� � f � r !Far•c, -',
Y .'}. � h h ,�/ y ' .T i' •�Mt � " .�. ` w -,.f < � J ,t .w � i� •q a •' a , �t �! 1 �'
'aJ•t•-��.''.'�' '`� vi• 4/lji� �f 'ter, �6. •!� y`ti' - '•+ ,'{. � r. �� *U� ,r x•• r� ' '4t
� . ;i►'* Y� • � .y •.' `,.• Syr - ,,Y � .�-. "" �4. � � : S�� �a •;,;'. ' • t � i. i ,' ..; - ��`
,•• a a• .ri ;ik�' � r �, r ,+. ,',, ' si.. ya '�" - ,( � a_ �� �. a�Y` ..�^a "_:�-«,
Moo
Li {S
y fig' .. �7 '� �• ,� .;M 1rt t.
°�'�.ci! <. �•e � f<. .a%/ -.,"4• .a •� � Q.o • r,q„� � 7'_7,"++' I- �� ,.�.Y*. N`
i�ye�L• F1 �.• _a✓ r •rti- 'S�•k'. ''av6 - .{ • • 14� '<y �,'• �, 1r' - - 41..,'7�`Ci�i
,+K #" ,�* + - a • • • • •`k a .t ' .. 7.'Y, -d/ �IyR,. 3
r��'j>_ t; 'a� 1\•� +�%''+� ~• ,�� ti' o �d ,z�..,�1r: .ii• );. ,f'r n �dr'T' h �� '� �Q- ...a�.,� .t' N� r a't
Ar
•, f✓�._a�.l f; rid•".+ � • , �' -�, s' •+N * i r• � � .��y, � s �. `y�l+�; "»- ,�` '�y.
, _ .�. � a. • y�j, r t a' ���• , . -_ y #r r ��yy i Y Y- "ice _ '� Y.^��r �► ..,. 4
J.r •: - par ]: �' . • 4 >. i 'x t �_. a-+t
f �"�°r .;li'�'�/ .O� n� �•W � • � �• / � .t
'` `,�•.-.,,r ''I.": y^•r��,.r .1..I .� ` ir".. S •.4, 1j Sf--r Y-�- , �"�.' r f '� Y Y'j ,r y�v a"+ •�i. t ,:•fir'. t
S' ,'ir, 4•<t. - 1.i '.} ti ,r..Y� -_ -'S• '.;, r ° ..✓. `. '.► Y _ �,t ''`✓ •`,k `5_ `f' M. f.•.
¢' �4C ,Yw �• .y M{�I . r�1 r .x '° _.�+w� � • ter^. •,. , • *;i' i... s' . +�rt`zt •;.� - _. 4 0`• •:. • :' '` t r' '! ,y .
,�, .•4J•`a ,.a' w � !,. •� ,t,. ., � � y .•��r �' �yF- f4 < • .,/ rri � �� �� t� +��b�r�,�' l r ,� � � • Pl
.,�. w�9M1 ,•< hl +`�``. ' � 7 � ••,:1 yr. ,y,,Y�,77�//s`7�c gee �e � ��a t�� ���r�' 4 Y r• Y;'1
,� •. ;� � � ' � � _ � '�•^ a 'w ' ` ���* al?''s•-'� :,a�"� y t , la�'`� �,'1.. JV � .F �r 1 � � j 5:,;,�r�• '�" . �'
t, _ tisa �' • %fi, n l'��� S • •T •.w - t •i� )'•, 7/ r.,. A,p -' ®,, ,�+��f l?,_. ,.+` J `+Y ~ k �• "' f �,i'�,�,�p, 'j i',�t..
. .`:`7' >': , e ,s t- -R. �at• y y "`.• 1• r 1 %�i�F �" Y�:'*.
� `� ,� � I �JH'f' 1h,r !`'� �r _ J �7e a� . ��' j� 'n. c"� �° ♦ ` 1r
`'?t: *r. �``,��` .� s- t t -' '<<��, ��_x - - tiT 1� .��: - A _ �lp�.`•v- w,. � � -11y `4- _ ,k /�. -��.
F. fF #• ; �! � .�; .t � ,� h,. sL� `�i `� :fad ..i . y:. �' ,� a ,.,a, �'. �� +• {'� ;. �' ,;�:` ' �� r ♦t i'r� v ,w � �•� � r` .� At �i� '' • %� • p�� I : .'r,.i;, N.:'• � �� : ""'.�.e� �..�,' • 'r•' i�, 1'(s � _ �.-'`
�i"1''�.• w ^rfa. .yi". -, ,. .If'`� �• yi -,, ,•. 'y . 'M% _'• �Q ,l t+w'
�'�-..,4i�� r y' '�+ w :'�f.�' :y �2T%� �; ��� �I` �• _� � .�'s,y � 'i ,� -�1 „ �. ."�;�i r„,� •a'�S •�' �,�•,� TIP
till till a/ %
��,s k ,'. " .� •� w � H- �yf�;y :.k .� :..,. .'~ ram, F» •,.S,itt � : r�
jr
- -
J {. - - - J v,-
,r¢v ! �•' .+�.�,;y ,`r--�t^�.•} �e•`. .i:.: _.r l _ � ..� '3- i4c?..`�.. 'r 'i' '�• �•, _
.1 1'��' r%: • y 1 ,tl 7>f`A .�, .V. -SL3:, - Y ♦' - J :J {:. Y,-/i j {• Y , _•Z y � ¢ �''
is � ,A'�' j' i � * - /� ` . �,,(d� i •# .R/ , A �,. L , j ;� _
v' y
Ft
-rl
JX1lt�}�►�f TVlow
e� uC. i /, a •t Ya- • •
E-1 A L
• z ss • ; • • k < 1 1 1 1
Vlo'' i. 9k ' 7� 4"• ` k. _ y4� zti it .:�' ,a. ' ^ 4 '_ - T_ - r ``a "vim % 1 1 1 • 1
3 < u �w ...� ;��. r� �.}ap �4 34 r 1 1 •1,_

ri -` •yLr A..�. 1-.� y5, 't CF, i'a F.� �Y I` y r .Jy. w• - • •., ' •).
,�� k!.0 '-p ,1. Y�1Y.•�' .+!'. i, y:N„• .( .r ��•. 'L ,y a'k+. i".. ."r q r .. �•.It � / 'l � �� _ t y
a.r..•, �Mr'R'. �Ty���j Y' •} � x 'rr ,. r ;+ <. � `4*�:Z;'.,. r� Yr. k 'j �,,.h. ,+ � „�d•,
�.. '-��." ,p :. ,,w'4 N: ..a.,Y • t( 1 •� w�•" `�- t� • ,.p 1 _ ,•i«' i���ij 1 't M •*, a.•
•�f . r r � y1 � .. ,4,ty � K � •riI t M � ` ,fil► r) rj i' �7i,.� 'k . �•,:�.
;�: � �' I� - �'�� #�•� :��� ,�>r wx y` ♦ '� r."y ® • T1,�1 I rT �, ^<1Y � � J �,1 J� .Y` , �• "�.1. F.
,.�e, ��„ �! �j�, k ! y� f. � r • 1-r,�iYI.+S j'i R'J� �� 1 � t / � y<
it ;, `¢.S � "•. ,W� Y�'3 �,�' t /�S.: ,, ,,� ;•, r �,. �_ <,j / ,'f,r•{f�,`7 - Ls '1 �j, «ti .'. NJ'• y*:
tt Mr L 1 - .rA � �•. 'd \I.r� i ' r !�• �' �Ea•/� `M�����r .j •Q t:T�yi '.e -j, 1.
:�¢ Y ,•1 h h ,�+ � .7' 1' •'Mt C ^ .�. ` _q �t < �t i! 1 �. \ ' ��,i ,��� r�,�yL
-,.. a a' ri ,�� y� r r T.`� �h� ' , �v• � . � � ::�i
R::N!i>;����. - t :e Z ++ 6 � _:,'�"� /� � %I „h•'a�s' Q � ` r' r 1 • • • '�' - F' r '1 y�y ^� � • � •y ° `• •
, � `•`,pt � ��1 �i x„ iYu� i��� ,li .'�y2/�,y��+ - . � - • • r • [ 1� ,� ) •r�, 4�y� .•,"M k �r`��' � .
i, � �r'< � F1 '". tY r •>4- `�[•l'�'. ''Fv6 � • • • 14� •<y '` � ,_ �', S
jai
': r �%..� •�t+ J.r• a�%.•rrii" , �1 ,j�Ne� +,t�'r ' a � �.,• ' - i:• ,�I i �i'Tr h �� 1 '.�.�Q � a.J�/y.�7;, .lt.. N� t a't �..
f ✓ .;.a. � . • t �7A ._. .� �. �(Y'1� * P !v. r ^ i•.. 'r•rPi �: ~.r ' �' � v
' ',�, ,�. A r. [trtj, t '��!• �. . _ .. :yi r �i,,� ` - � M 4''��' 1 '� Y' ^T� Zell
r1
1 � '� M : � �'. �L �, F,' ''� 1 %aIi '1 y ' � •� '+5,. � r••Y r p -2 ,ry►.�/`i•� : ':,�i.Z.� .t ,1C M� a'�, j� ,�a ' y'��,; w '
r�• F �. r,�tij�.,{ •1: �! ;M •�" i I: at • �y • � �•�' '" •�"�°r .T�'�/ of i �•rl �--! ,` t'' �" � ��,,. C� , � .y� • �' `-
- " � ✓ ` T '..jr jt ,) �: j, �,�, i • .+' �ry % r�R' !P 1 r w� ,// % � / ;I' :i )^ ` r .�'�:� L � �`�..i. 'S� r a � _ � dS�1 �% .e
'' ''��-! r�w ���r,��.'•� t• , .• .�ir �.. 3. :e,� +�� 1 i i��"T�,� � ',��/.,p' �� ':}. � '� • �f «'. -�• tY,'/�lq '. 7 i `}''�,_ -�'f,
. {,�,...,►` �', 4%<'•. ', '3.tr �•}.r,•iF( "ti-q,��,e',• Y. j;. .ai'� X•i., y�•1, j.t' .j1Y _?-.•�• .. '.►_ i•. y+y. �F .,.*' `S� �''1'• .�fL� f.•t� �[4'�y� `' '�.
.°w- �.•`y'� MJ .�-'lFJ r �' `�•�+! ° F ®- 'Y- T: o•� s' .. s��' • •yj�, r - °' .3�l a '� y S r 'i 1 �TY•u��.' �•i)�•ir
• � .�: <� 'i!. 'x � _ as � �.` - k •` `� ' • ' •... � •.. _'� ♦ r � (, ) - '. T
.?.. �t^j {'�, y__J; �� •� �♦; ns ir�'�� .r'�( .�'��. � ,:1: ..t �y �� •'-a. ♦ .. -. is > - d_ �� � �� .c♦ �"► `t ��:•,
-��,�-��C-.',_ a1�Ay�w• .".:�Y - _:!'� ,. �, ,'�' �w �1f�f' s.�-�.�'-a- .t <4' *�''/„'. 'Y'� .'w.
y}r i Yid.: ,7F � •� •� �' Y' ~r'a t �'• �? • ;�-
,F. ��yM1 .•� V +'�. A A 4y r � `f�+iy '�,� r j+ .,fj, �'�I�ry�'j Y r Y
t!`• >• { l� e k t^ � ``�Y' •' 1` �`• �'+��< t `.,y71
r • �+� t® .v. « F 1'!�� iq '��.�' r „�i,tfi..
_ � �• r:� - �("• a.' a 'c' .,� �� i zifij. ;7fi'.;J •- .r t ,F.+ -
ai. r - y, • t:s ll:K '.S %' ••• _ I, '�'�dT, •;s-1 „ •t YY
.1ff # { `/ i � Q � �au "� !� R� ..i . r � }- yp' a ,.Y� �.. `ey��� 'i �7 �. • .. . �:�
t f �A � ♦ %i • • .'t' .. •vl.. �: _ ''fit . � . ���� i..?� ry �y ?�, d,.�+ �j �.-,.
Iy�j/�Tjj, ,.t r. I. /b • .rtl •'� / 4 CS! sy,. .fir '• " .l?�•j r
. �R•• 1,� - it i r••1�• . I� `�+��?•: 1 •• w r" p._ . r'P , �.kl •ram R. •.. i} �,- •L . +TIP
-
l�,`,} of • w"'�"A y :. l /` - /� !� •�?+���� • ',� 1 �• [' •/•
,�. �,- .�..• r '.1� -/ �� \ r� \% � y �'.!. f �r l?� .{' . � '��+� \', 14 �t.yY ft �. � ajr
2 ♦r• l:+'`<'
� l T
.1 ' + 1'/Y•i' 'ri�f+. � 1 Y{ �'-�„ � r ., �� -17., .1 .� - •ra , .Yt I� ,� ;J /:. Y.i� � /. Y I , � j � �.
ii �� ,�,ti � r ' ' {/,i�,��` ' `��a Q'� . ' A �" 'Lji ',3 i�,y �,'" ,•�qf'. � - `a '
a a - ,�' ", ` 1 ��rtaw.`�•{y �* J�(d'{r• r 7 ^ 1. 7���r.+(. �: ..�. ' e. i/ �. . - •b
4 . -� «. •• r +;. •/.i'5;,9? i . t1•. �.+ .'w „ „r. �T ,",♦ '{�,', ' '', +..y
1
� � ♦
.+
a. �1 • 1 • 1 1
4a'°4 4! 1tl ;, .. . �.'. K. 1 f i-c� - •r ''�' _ i ti � t,
. ''�s�'�. „''�'�7-�+ t, 9� �' ti": ` k„ � _ � i zL � ^��' a � .. � ; Lt . ;�� _ �Ia y � • 1 1 1
• I-�'•.L�' li'K' �l�d' I C�Y= 0.:\. _ � ° - S. s ,i.�It< .. '��.. � .. vi -
U i .. + ate. l► r .. ':.r •. Al _ 10

5 y
a
m a ew voe
r
41
�.
i p 2
r rr r3
-
µ 1� Y
"y 44A'u 5.
,y � of w! ✓ t
�� ,

FLUSH -MOUNT STEEL
LOCKABLE WELL PLUG
w1m,
WELL MANHOLE COVER
2'x2'X4" CONCRETE WELL PAD
-EXISTING GROUND
` - STEEL MANHOLE SKIRT
PORTLAND CEMENT AND
BENTONITE MIX
GROUT SEAL
TO SURFACE
WELL CASING
(2-INCH DIA. SCH. 40 PVC)
8-INCH DIA. BOREHOLE
----(FOR
DEEP AND BEDROCK
OUTER CASING (6-INCH DIA.
SCH. 40 PVC FOR DEEP AND
BEDROCK WELLS)
TYPICAL FLUSH —MOUNT WELL COVER
SCALE: NTS
4-FT
ROTECTIVE WELL VAULT
ITH LOCKING COVER
?-FT MIN. HEIGHT)
2'x2'X4" CONCRETE WELL PAD
PROTECTIVE BOLLARD FILLED WITH
CONCRETE AND PAINTED YELLOW
—0 (TYPICAL)
TYPICAL PROTECTIVE BOLLARDS
SCALE: NTS
WELL PLUG
PROTECTIVE WELL VAULT
WITH LOCKING COVER
(2-FT MIN. HEIGHT) 2'x2'X4" CONCRETE WELL PAD
-EXISTING GROUND
GROUT SEAL TO SURFACE
WELL CASING
(2-INCH DIA. SCH. 40 PVC)
�I
+
----�BENTONITE SEAL
zF
I
TOP OF SCREEN
FlLTER SAND
O
2-INCH DIA. SCH. 40 PVC SCREEN
_
0.010-INCH SLOT) WITH PRE -PACKED
4_.
j:x..
FILTER SAND
�rY
THREADED PVC CAP
TYPICAL SHALLOW MONITORING WELL (Single Cased)
SCALE: NTS
PROTECTIVE
WITH U
(2-FT
a
I
v
a
in
;RETE WELL PAD
3 GROUND
TO SURFACE
SCH. 40 PVC)
BOREHOLE
4G (6-INCH DIA.
C) SET APPROX.
) PARTIALLY
ROCK
EAL
EEN
SCH. 40 PVC SCREEN
SLOT) WITH PRE —PACKED
\_THREADED PVC CAP
TYPICAL DEEP MONITORING WELL (Double Cased)
SCALE: NTS
NOTES:
1. MONITORING WELLS WILL BE CONSTRUCTED IN ACCORDANCE WITH 1SA NCAC 02C .0108 STANDARDS OF CONSTRUCTION: WELLS OTHER THAN
WATER SUPPLY.
2. PROTECTIVE COVERS TO BE PAINTED BRIGHT YELLOW WITH WEATHER RESISTANT PAINT.
3. WELL TAG IDs TO BE ATTACHED TO WELL PROTECTIVE COVER WITH MECHANICAL RIVETS OR SET INSIDE FLUSH -MOUNT WELL COVER.
4. PROTECTIVE BOLLARDS (CONE -TAPERED, FILLED WITH CONCRETE, AND PAINTED YELLOW) ARE TO BE INSTALLED AS NECESSARY FOR WELLS LOCATED
IN AREAS WITH NEARBY VEHICULAR TRAFFIC.
S. SLOPE 2' X 2' CONCRETE PAD SURFACE UPWARD TO PROTECTIVE COVER TO PREVENT PONDING WATER.
6. WELL ID TO BE ETCHED IN 2' X 2' CONCRETE PAD.
7. ALL CONSTRUCTION MEASUREMENTS ARE APPROXIMATE.
F)�
PROTECTIVE WELL VAULT
WITH LOCKING COVER
(2—FT MIN. HEIGHT)
if)
z
s
WELL PLUG
2'x2'X4" CONCRETE WELL PAD
-EXISTING GROUND
GROUT SEAL TO SURFACE
WELL CASING
(2-INCH DIA. SCH. 40 PVC)
8-INCH DIA. BOREHOLE
OUTER CASING (6-INCH DIA.
SCH. 40 PVC) SET APPROX.
1-FOOT INTO COMPETENT BEDROCK
BENTONITE SEAL
TOP OF SCREEN
FILTER SAND
2-INCH DIA. SCH. 40 PVC SCREEN
(0.010-INCH SLOT) WITH PRE -PACKED
FILTER SAND
THREADED PVC CAP
w PORTLAND CEMENT AND BENTONITE
GROUT MIX IF REQUIRED
BOTTOM OF BORING
TYPICAL BEDROCK MONITORING WELL (Double Cased)
SCALE: NTS
TYPICAL WELL CONSTRUCTION DETAILS
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION
CATAWBA COUNTY, NORTH CAROLINA
DATE
September 2015
FIGURE
10-10

10000
1000
100
2L Standard: 700 ug/1
µ9/1-
10
1
0
Sep-10 Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
tMW-10S MW-11S BMW-12S BMW-13S BMW-14S MW-4 (BG)
MW-4 (BG) vs Shallow Wells DATE
Boron (tot)
SEPTEMBER 2015
F)l Duke Carolinas, LLC
Marshall Steam Station Ash Basin FIGURE
10-11
Catawba County, NORTH CAROLINA

10000
1000
1,
'A
2L Standard: 300 ug/1
µ9/1-
_ p p
100
0
10
1
Sep-10 Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
fMW-10S MW-11S BMW-12S BMW-13S --)I-MW-14S MW-4 (BG)
MW-4 (BG) vs Shallow Wells DATE
Iron (tot)
SEPTEMBER 2015
F)l Duke Carolinas, LLC
Marshall Steam Station Ash Basin FIGURE
10-12
Catawba County, NORTH CAROLINA

1000
100
µg/L
2L Standard: 50ug/1
0 ..
10
0
fl_.
1
Sep-10 Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
fMW-10S MW-11S BMW-12S BMW-13S --*--MW-14S tMW-4 (BG)
MW-4 (BG) vs Shallow Wells DATE
Manganese (tot)
SEPTEMBER 2015
F)l Duke Carolinas, LLC
Marshall Steam Station Ash Basin FIGURE
10-13
Catawba County, NORTH CAROLINA

1000
2L Standard: 250 mg/1
100
mg/L
10
1
0
Sep-10 Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
tMW-10S MW-11S Series3 tMW-12S BMW-13S --I—MW-145 BMW-4 (BG)
F)l
MW-4 (BG) vs Shallow Wells
Sulfate (tot)
Duke Carolinas, LLC
Marshall Steam Station Ash Basin
Catawba County, NORTH CAROLINA
DATE
SEPTEMBER 2015
FIGURE
10-14

1000
100
2L Standard: 500 mg/1
mg/L
10
0
1
Sep-10 Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
fMW-10S MW-11S BMW-12S BMW-13S --)K--MW-14S BMW-4 (BG)
F)l
MW-4 (BG) vs Shallow Wells
Total Dissolved Solids
Duke Carolinas, LLC
Marshall Steam Station Ash Basin
DATE
SEPTEMBER 2015
FIGURE
10-15
Catawba County, NORTH CAROLINA

10
9
8
7
2L Standard = 6.5 - 8.5 SU
SU
6
5
4
Nvoor
Sep-10 Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
MW-10S MW-11S BMW-12S BMW-13S BMW-14S MW-4 (BG)
MW-4 (BG) vs Shallow Wells DATE
pH (field)
SEPTEMBER 2015
F)w Duke Carolinas, LLC
Marshall Steam Station Ash Basin FIGURE
10-16
Catawba County, NORTH CAROLINA

10000
1000
2L Standard: 700 ug/1
µ9/1-
100
10
1
Sep-10 Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
MW-10D MW-11D BMW-12D BMW-13D BMW-14D MW-4D (BG)
MW-4D (BG) vs Deep Wells DATE
Boron (tot)
SEPTEMBER 2015
F)l Duke Carolinas, LLC
Marshall Steam Station Ash Basin FIGURE
10-17
Catawba County, NORTH CAROLINA

10000
1000
00�
2L Standard: 300 ug/I
G
µ9/1-
G
100
04
10
1
Sep-10 Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
MW-10D MW-11D BMW-12D BMW-13D BMW-14D MW-4D (BG)
MW-4D (BG) vs Deep Wells DATE
Iron (tot)
SEPTEMBER 2015
F)l Duke Carolinas, LLC
Marshall Steam Station Ash Basin FIGURE
10-18
Catawba County, NORTH CAROLINA

100
2L Standard: 50 ug/1
µ9/L
10
A
A
1
Sep-10 Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
—41--MW-10D MW-11D BMW-12D BMW-13D BMW-14D MW-4D (BG)
MW-4D (BG) vs Deep Wells DATE
Manganese (tot)
SEPTEMBER 2015
F)l Duke Carolinas, LLC
Marshall Steam Station Ash Basin FIGURE
10-19
Catawba County, NORTH CAROLINA

1000
100
2L Standard: 250 mg/1
mg/L
10
1
0
01,
>> ��
Sep-10 Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
tMW-10D — - MW-11D BMW-12D BMW-13D BMW-14D MW-41) (BG)
MW-4D (BG) vs Deep Wells DATE
Sulfate (tot)
SEPTEMBER 2015
F)l Duke Carolinas, LLC
Marshall Steam Station Ash Basin FIGURE
10-20
Catawba County, NORTH CAROLINA

1000
2L Standard: 500 mg/I
mg/L
100
p p �
1�
0
0
10
Sep-10 Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
fMW-10D MW-11D Series3 BMW-12D BMW-13D --0--MW-14D MW-4D(13G)
F)l
MW-4D (BG) vs Deep Wells
Total Dissolved Solids
Duke Carolinas, LLC
Marshall Steam Station Ash Basin
DATE
SEPTEMBER 2015
FIGURE
10-21
Catawba County, NORTH CAROLINA

10
9
8
2L Standard = 6.5 - 8.5 SU
O
O
7
SU
p O O O 0
qw-
A
At
4
Sep-10 Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
MW-10D MW-11D BMW-12D BMW-13D BMW-14D MW-4D (BG)
MW-4D (BG) vs Deep Wells DATE
pH (field)
SEPTEMBER 2015
F)l Duke Carolinas, LLC
Marshall Steam Station Ash Basin FIGURE
10-22
Catawba County, NORTH CAROLINA

10000
10
1000
ug/1 100
10
3660
3320 2960
3600 2970 2570 2640
3040
3520 3300 3220 3060 2470
2910 2750
6.57
5.18
3.79
2.95
2.91
. 2.73
d
12
1.07
1
Sep-10
Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
X Boron, diss tBoron, tot 21- Standard: 700 ug/I —A—Turbidity, field
F:)l
MW-14D DATE
Boron and Turbidity
September 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN FIGURE
CATAWBA COUNTY, NORTH CAROLINA 10-23
NTU

10000 100
4160
52
1000
19.4
ug/I 100
13.6
9.86
10 NTU
8.39
-
9.98
6.47
7.73
5-21
10
3.39
2.96
1 1
Sep-10 Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
X Boron, diss tBoron, tot 21- Standard: 700 ug/I —A—Turbidity, field
F:)l
MW-14S
Boron and Turbidity
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
CATAWBA COUNTY, NORTH CAROLINA
DATE
September 2015
FIGURE
10-24

10000
100
1000
1380
10
7,a
7.6
11.5
5.92
5.32 180 5.16
7
4.38 ,7
190
ug/I 100
160
128 3 83
109
164
2.54
137
NTU
AL
157
1
10
X 10
1
0
Sep-10
Jan-11 May-11 Sep-11 Jan-12 May-12
Sep-12 Jan-13 May-13
Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
X Iron, diss
+Iron, tot 21- Standards: 300 ug/I
—A—Turbidity, field
F)l
M W-4
Iron and Turbidity
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
CATAWBA COUNTY, NORTH CAROLINA
DATE
September 2015
FIGURE
10-25

1000
10
5.63
4.85
/376
3.61
268
2.67
2.15
100
1.85
88
\
A—
—
1.08
ug/I
11,11,
41k
1 NTU
18
0.7
� I
17
17
0.59
10
10
1
0
Sep-10
Jan-11 May-11 Sep-11 Jan-12
May-12
Sep-12 Jan-13 May-13
Sep-13 Jan-14 May-14
Sep-14 Jan-15 May-15
X Iron, diss
+Iron, tot 21- Standards: 300 ug/I
—.&—Turbidity, field
F)l
MW-4D
Iron and Turbidity
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
CATAWBA COUNTY, NORTH CAROLINA
DATE
September 2015
FIGURE
10-26

1000
10
7,36
6.79
5.14
4.79 4.74
406
4.52 or
371
3.28
234
186 2.66
2.53
2.21 142
151
157 y
133
137
100
91 1.62
82
4
X
ug/I
1 NTU
i
10
1
0
Sep-10
Jan-11 May-11 Sep-11 Jan-12 May-12
Sep-12 Jan-13 May-13
Sep-13 Jan-14 May-14
Sep-14 Jan-15 May-15
X Iron, diss
+Iron, tot 21- Standards: 300 ug/I
—A—Turbidity, field
F)l
MW-10D
Iron and Turbidity
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
CATAWBA COUNTY, NORTH CAROLINA
DATE
September 2015
FIGURE
10-27.1

1000
100
432 443 450
373
236
193
105
A.23,8
98
100
77
65.
f6l "t.
12.8
A
ug/I
11.6
10 NTU
9.01
9.12
/ 8.3
X 18
6.52 �/ 8
5.77
10
1
1
Sep-10
Jan-11 May-11
Sep-11 Jan-12
May-12
Sep-12
Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
X Iron, diss
+Iron, tot
21- Standards: 300 ug/I —A—Turbidity, field
F)l
MW-10S
Iron and Turbidity
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
CATAWBA COUNTY, NORTH CAROLINA
DATE
September 2015
FIGURE
10-27.2

1000
100
368
325
41
3
252
220
7
178
35 160
33.3
125
100
14.1
:12.2
ug/I
10 NTU
8.89
10_1
_ 18
- 8.99 111
8.41
7.54
6.98
6.47
10
4.63
EL
2,'87.S
1
Sep-10
Jan-11 May-11 Sep-11 Jan-12 May-12
Sep-12 Jan-13 May-13
Sep-13 Jan-14 May-14 Sep-14
Jan-15 May-15
X Iron, diss
+Iron, tot 21- Standards: 300 ug/I
—.&—Turbidity, field
F)l
MW-11 D
Iron and Turbidity
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
CATAWBA COUNTY, NORTH CAROLINA
DATE
September 2015
FIGURE
10-28.1

1000
100
392
324
199
202
176
160 155
137
100
123
117
114
22
92
70
13.8
ug/I"
g.5
9.52
10 NTU
X 18
8.43
7.28
6.24 6.16
5.76
10
5.37
1
1
Sep-10
Jan-11 May-11 Sep-11 Jan-12 May-12
Sep-12
Jan-13 May-13
Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
X Iron, diss
+Iron, tot
21- Standards: 300 ug/I
—A—Turbidity, field
F)l
MW-11S
Iron and Turbidity
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
CATAWBA COUNTY, NORTH CAROLINA
DATE
September 2015
FIGURE
10-28.2

1000
100
652
624
535
F)l
MW-12D DATE
Iron and Turbidity
September 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN FIGURE
CATAWBA COUNTY, NORTH CAROLINA 10-29.1

1000
10
6.89
5.99
F)l
MW-12S DATE
Iron and Turbidity
September 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN FIGURE
CATAWBA COUNTY, NORTH CAROLINA 10-29.2

1000
10
4.6
2.66
2.34
2.13
100
189
1.59
1.59
1.32
1,1
1..22
file
ug/I
1 NTU
24
19
17 12
0i
1t1
10
12
X 10
10
0.44
1
0
Sep-10
Jan-11 May-11 Sep-11 Jan-12 May-12
Sep-12
Jan-13 May-13
Sep-13 Jan-14 May-14
Sep-14 Jan-15 May-15
X Iron, diss
+Iron, tot
21- Standards: 300 ug/I
—A—Turbidity, field
F)l
MW-13D
Iron and Turbidity
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
CATAWBA COUNTY, NORTH CAROLINA
DATE
September 2015
FIGURE
10-30.1

10000
82
73.8
100
1000
1010 Y21030A
7;7 :.
221
16.7 Y
11.4
ug/I 100
10 NTU
.i
X 13
10
1 1
Sep-10 Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
X Iron, diss +Iron, tot 21- Standards: 300 ug/I —A—Turbidity, field
F)l
MW-13S
Iron and Turbidity
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
CATAWBA COUNTY, NORTH CAROLINA
DATE
September 2015
FIGURE
10-30.2

1000
10
6.57
159
124 5.18
113 108
F)l
MW-14D DATE
Iron and Turbidity
September 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN FIGURE
CATAWBA COUNTY, NORTH CAROLINA 10-31.1

10000
100
1160
1270
1010
1000
696
411 OF
244
213 202
142
20.3 19.4
II
ug/I 100
9.98
AL
10 NTU
8.23
10
1
Sep-10
3.39
2.96
Jan-11 May-11 Sep-11 Jan-12 May-12
X Iron, diss
Sep-12 Jan-13 May-13
t—Iron, tot 21- Standards: 300 ug/I
5-21
1
Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
—A—Turbidity, field
F)l
MW-14S
Iron and Turbidity
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
CATAWBA COUNTY, NORTH CAROLINA
DATE
September 2015
FIGURE
10-31.2

100
100
38
11.6
12.5 24 11.5
10
7.45
7.6
r
5.92
5.32
5.16 7.94
4.38
3.83
ug/I 10
NTU
11
9
2.54
5
5
5 5
0.99
1
1
1
0
Sep-10
Jan-11 May-11 Sep-11 Jan-12 May-12
Sep-12 Jan-13
May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
X Manganese, diss
Manganese, tot
21- Standards: 50 ug/I — Turbidity, field
F)l
M W-4
Manganese and Turbidity
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
CATAWBA COUNTY, NORTH CAROLINA
DATE
September 2015
FIGURE
10-32

100
10
7.48
5.63
4.85
48 3.61
38
2.15
2.67
1.85
1.08
10
ug/I
1 NTU
1.03
9
0.74
0.83
0.74AL
5 5 5 5
1
1
0
Sep-10 Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
X Manganese, diss tManganese, tot 21- Standards: 50 ug/I (Turbidity, field
F)l
MW-4D
Manganese and Turbidity
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
CATAWBA COUNTY, NORTH CAROLINA
DATE
September 2015
FIGURE
10-33

100 10
97
8.5
7,36
.59
6'
4.74
Ilk
3.28 4.52
4.79
38
466,
30
2.53
r21
19
1.62 11
14
ug/I 10
1 NTU
9
0.83 10
X 7 6
5
1
1 :
Sep-10 Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
X Manganese, diss +Manganese, tot 21- Standards: 50 ug/I —A—Turbidity, field
F)l
MW-10D
Manganese and Turbidity
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
CATAWBA COUNTY, NORTH CAROLINA
DATE
September 2015
FIGURE
10-34.1

100 100
49
35 25
23.8 22
18
23 22 2416.8 17
20
16
12.5 X
11.6
9.94
ug/I 10 12.8 9.01 8.3 10 NTU
11
9.12
6.72 6.52 6.59
1 1
Sep-10 Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
X Manganese, diss +Manganese, tot 21- Standards: 50 ug/I —A—Turbidity, field
F)l
MW-10S
Manganese and Turbidity
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
CATAWBA COUNTY, NORTH CAROLINA
DATE
September 2015
FIGURE
10-34.2

100 100
40
33.3
35
14 14.1
12.2
10.1
ug/I 10
8.41 8.99
10 NTU
JI
8.89 6.47'
6
8 7.
5
_&63,
2.87 2.89
1
1 1
Sep-10 Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
X Manganese, diss +Manganese, tot 21- Standards: 50 ug/I —A—Turbidity, field
F)l
MW-11 D
Manganese and Turbidity
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
CATAWBA COUNTY, NORTH CAROLINA
DATE
September 2015
FIGURE
10-35.1

100
100
26
22
18.3
15.3
18
12.6 13.8
11.7
9.51 9.52
ug/I 10
9
8.43
10 NTU
7.28
6.16
5.76,
5.3'T'
6
T
1 1
Sep-10 Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
X Manganese, diss tManganese, tot 21- Standards: 50 ug/I — Turbidity, field
F)l
MW-11S
Manganese and Turbidity
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
CATAWBA COUNTY, NORTH CAROLINA
DATE
September 2015
FIGURE
10-35.2

100 100
37
40
29
24 25
21
16
15
13.8
13
12.2
11 11 11
9.8 9.8
ug/I 10
.9
10 NTU
8.17 8.83
8.93
8.17 8.55
3..11
1 1
Sep-10 Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
X Manganese, diss Manganese, tot 21- Standards: 50 ug/I (Turbidity, field
F)l
MW-12D
Manganese and Turbidity
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
CATAWBA COUNTY, NORTH CAROLINA
DATE
September 2015
FIGURE
10-36.1

1000
10
6.89
5.99
127
100
'
.3
3.3 54
x
30
A
ug/I
32
23
NTU
20
2.36
/3V
2.3
14
10
10
1.92 10
2.19 10 jr
2.13
It
2.05
5
1.65
1
1
Sep-10
Jan-11
May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13
May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
X Manganese, diss Manganese, tot
21- Standards: 50 ug/I (Turbidity, field
F)l
MW-12S
Manganese and Turbidity
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
CATAWBA COUNTY, NORTH CAROLINA
DATE
September 2015
FIGURE
10-36.2

100
10
A 4.6
2.66
2.13
1.89
2.34
1.59
1.59
1.32
1.22
ug/I 10
1 NTU
1.16
1.03
0.92
0.6
5 5 5 5 5 5 5 5 5 5 5
li.00� 5 5
0.44
1
1IL0
Sep-10 Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
X Manganese, diss tManganese, tot 21- Standards: 50 ug/I (Turbidity, field
F)l
MW-13D
Manganese and Turbidity
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
CATAWBA COUNTY, NORTH CAROLINA
DATE
September 2015
FIGURE
10-37.1

100
100
1 i
73.8
2
449
50
31 32
27.7
27
27
25
23.9 22.9
26
26.7
17
16.7
16
11.4
10
10
ug/I -
NTU
10
6
7.91 7.69
X1 v
1
1
Sep-10 Jan-11
May-11
Sep-11 Jan-12 May-12 Sep-12 Jan-13
M ay-13 Sep-13 Jan-14 May-14 Sep-14
Jan-15 May-15
X Manganese, diss Manganese, tot
21- Standards: 50 ug/I (Turbidity, field
F)l
MW-13S
Manganese and Turbidity
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
CATAWBA COUNTY, NORTH CAROLINA
DATE
September 2015
FIGURE
10-37.2

100
10
10
ug/I
NTU
2.73
F)l
MW-14D DATE
Manganese and Turbidity
September 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN FIGURE
CATAWBA COUNTY, NORTH CAROLINA 10-38.1

1000
100
52
192
147
110
95
20.3
100
85
82
19.4
77
69
71
X
47
13.6 43
9.98
9.86
7-4
ug/1
8,1
10 NTU
7.73
8.23
v
6.47
10
1
1
Sep-10
Jan-11 May-11 Sep-11 Jan-12 May-12
Sep-12 Jan-13
May-13 Sep-13
Jan-14 May-14 Sep-14 Jan-15 May-15
X Manganese, diss
Manganese, tot
21- Standards: 50 ug/I
(Turbidity, field
F)l
MW-14S
Manganese and Turbidity
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
CATAWBA COUNTY, NORTH CAROLINA
DATE
September 2015
FIGURE
10-38.2

100
9.00
8.00
7.00
12.5
11.5
6.00
5.84
5.73
10
5.73]
5.53
�5.43
7.94
5.00
043.8 5.92
5.16
STD
2.54
NTU
4.00
3.00AL1
2.00
1.00
0.00
Sep-10
Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13
--*---pH (field) 21- Standards —A,—Turbidity, field
Jan-14 May-14 Sep-14
Jan-15 May-15
0
F)l
M W-4
pH and Turbidity
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
CATAWBA COUNTY, NORTH CAROLINA
DATE
September 2015
FIGURE
10-39

9.00
10
8.00
5.63
F)l
MW-4D DATE
pH and Turbidity
September 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN FIGURE
CATAWBA COUNTY, NORTH CAROLINA 10-40

100
9.00
8.00
7.00
23.9
6.00
i II
5.00
STD
'T� 2
10 NTU
4.00
Nk
5.77
3.00
2.00
1.00
0.00 1
Sep-10 Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
tpH (field) 21- Standards —A,—Turbidity, field
F)l
MW-10S
pH and Turbidity
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
CATAWBA COUNTY, NORTH CAROLINA
DATE
September 2015
FIGURE
10-41.2

9.00
10
8.00
7.00
6.00
5.00
STD
4.00
3.00
2.00
1.00
4
Ir or
6J9
5.
52 4.74
4.79
6.68 .6
6.3 6.1.
6.33 6.32 n`;
6.17
2.53
1;'
JL
0.00
Sep-10
Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14
mph, field 21- Standards =r Turbidity, field (NTU)
F)l
May-14 Sep-14 Jan-15 May-15
1 NTU
0
MW-10D DATE
pH and Turbidity
September 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN FIGURE
CATAWBA COUNTY, NORTH CAROLINA 10-41.2

100
9.00
8.00
7.00
6.28 6.29
6.03
6.00
it li
Ar 13
5.00
STD
9.51 9.52
11.7 8.43 A
10 NTU
4.00
614
3.00
2.00
1.00
0.00 1
Sep-10 Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
tpH (field) 21- Standards —A,—Turbidity, field
F)l
MW-11S
pH and Turbidity
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
CATAWBA COUNTY, NORTH CAROLINA
DATE
September 2015
FIGURE
10-42.1

9.00
100
8.00
35 6.89
6•9
6.86
6.74
F)l
MW-11 D DATE
pH and Turbidity
September 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN FIGURE
CATAWBA COUNTY, NORTH CAROLINA 10-42.2

9.00
10
8.00
6.89
5.99
F)l
MW-12S DATE
pH and Turbidity
September 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN FIGURE
CATAWBA COUNTY, NORTH CAROLINA 10-43

9.00
100
8.00
7.00
6.00
5.00
STD
Aroo-:) -
8.93 8.55
8.17
10 NTU
4.00
3.00
5.65
3.11
2.00
1.00
0.00 1
Sep-10 Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
tpH (field) 21- Standards —A,—Turbidity, field
F)l
MW-12D
pH and Turbidity
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
CATAWBA COUNTY, NORTH CAROLINA
DATE
September 2015
FIGURE
10-44

100
9.0
73.8
82
F)l
MW-13S DATE
pH and Turbidity
September 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN FIGURE
CATAWBA COUNTY, NORTH CAROLINA 10-45

9.00
10
8.00
4.6
7.00
2.66 6.34
6.17 6.19
6.00
6.16
2.13 2.34
1,S
F;
5.00
STD
1 NTU
"000-'
4.00
3.00
0.44
2.00
1.00
0.00 0
Sep-10 Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
tpH (field) 21- Standards —A,—Turbidity, field
F)l
MW-13D
pH and Turbidity
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
CATAWBA COUNTY, NORTH CAROLINA
DATE
September 2015
FIGURE
10-46

100
9.00
8.00
52
7.00
6.00A
19.4
—\A
5.44
5.38 5.31 5.35
5.00
STD
I9
8.39
10 NTU
4.00
7.73
3.00
2.00
1.00
2
.74AL
.9'
2.96
0.00 1
Sep-10 Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
tpH (field) 21- Standards —A,—Turbidity, field
F)l
MW-14S
pH and Turbidity
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
CATAWBA COUNTY, NORTH CAROLINA
DATE
September 2015
FIGURE
10-47

9.00
10
8.00
6.57
7.00
5.18
6.00
5.58 5 5.5 5,46 5.55 5.43 5.55
5.79"
5.00
STD
NTU
4.00
3.00
2
2.00
1.67
1.82
1.51
AL
1.48
1.00
1.2
1
0.00
Sep-10 Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
tpH (field) 21- Standards —A,—Turbidity, field
F)l
MW-14D
pH and Turbidity
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
CATAWBA COUNTY, NORTH CAROLINA
DATE
September 2015
FIGURE
10-48

1000 100
20.3
19.4
100
mg/I,I
10
13,6
9.86
9.98
A,
7.73
6.47
V
10 NTU
VIX 3.39
2.96
1 1
Sep-10 Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
--4--TDS (mg/1) 21- Standards -A-Turbidity
F)l
MW-14S
Total Dissolved Solids and Turbidity
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
CATAWBA COUNTY, NORTH CAROLINA
DATE
September 2015
FIGURE
10-49

1000
10
100
mg/I
NTU
10
1
1
Sep-10
Jan-11 May-11 Sep-11 Jan-12
May-12
Sep-12
—�TDS (mg/1)
Jan-13 May-13 Sep-13
2L Standards (Turbidity
Jan-14 May-14 Sep-14 Jan-15 May-15
510 510 510
6.57
494
490
480
460 450
5.18
2.73
1.82
1.2
1.51
1. ti7
\1.07
1.29
�•
F)l
MW-14D DATE
Total Dissolved Solids and Turbidity
September 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN FIGURE
CATAWBA COUNTY, NORTH CAROLINA 10-50

100
0
Ratios > 1 signify concentration greater than concentration in background well.
1
Sep-10 Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
MW-10D/MW-4D ——MW-10S/MW-4 MW-11D/MW-4D MW-11S/MW-4 MW-12D/MW-4D MW-12S/MW-4 MW-13D/MW-4D MW-13S/MW-4 MW-14D/MW-4D MW-14S/MW-4
Correlation Plot - Compliance Well vs. Background DATE
Boron (total)
SEPTEMBER 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN FIGURE
10-51
CATAWBA COUNTY, NORTH CAROLINA

100.0
Ratios > 1 signify concentration greater than concentration in background well.
10.0
Oq
m
c
0
m
41
v
U
se
C
0
19111,
V
C
d
7
*''
to
1.0
C
0
V
71
0.1
0.0
Sep-10
Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
MW-10D/MW-4D ——MW-10S/MW-4 MW-11D/MW-4D MW-11S/MW-4 MW-12D/MW-4D MW-12S/MW-4 MW-13D/MW-4D MW-13S/MW-4 MW-14D/MW-4D MW-14S/MW-4
Correlation Plot - Compliance Well vs. Background DATE
Iron (total)
SEPTEMBER 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN FIGURE
10-52
CATAWBA COUNTY, NORTH CAROLINA

100.0
1.0
0.1
Sep-10 Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14
MW-10D/MW-4D ——MW-10S/MW-4 MW-11D/MW-4D MW-11S/MW-4 MW-12D/MW-4D MW-12S/MW-4 MW-13D/MW-4D MW-13S/MW-4
Sep-14 Jan-15
MW-14D/MW-4D
May-15
MW-14S/MW-4
Correlation Plot - Compliance Well vs. Background DATE
Manganese (total)
SEPTEMBER 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN FIGURE
10-53
CATAWBA COUNTY, NORTH CAROLINA

10.0
0
Ratios > 1 signify concentration greater than concentration in background well.
0.1
Sep-10 Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
MW-10D/MW-4D ——MW-10S/MW-4 MW-11D/MW-4D MW-11S/MW-4 MW-12D/MW-4D MW-12S/MW-4 MW-13D/MW-4D MW-13S/MW-4 MW-14D/MW-4D MW-14S/MW-4
Correlation Plot - Compliance Well vs. Background DATE
pH (field)
SEPTEMBER 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN FIGURE
10-54
CATAWBA COUNTY, NORTH CAROLINA

10000.0
Ratios > 1 signify concentration greater than concentration in background well.
1000.0
0
=M 100.0
c
0
m
L
U
v
c
O
U
C
Ol
7
a.+
C
10.0
v°
AOL-
1.0
0.1
Sep-10 Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
MW-10D/MW-4D ._—MW-10S/MW-4 MW-11D/MW-4D MW-11S/MW-4 MW-12D/MW-4D MW-12S/MW-4 MW-13D/MW-4D MW-13S/MW-4 MW-14D/MW-4D MW-14S/MW-4
Correlation Plot - Compliance Well vs. Background DATE
Sulfate (total)
SEPTEMBER 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN FIGURE
10-55
CATAWBA COUNTY, NORTH CAROLINA

100.0
tion in background well.
1.0
0.1
Sep-10 Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
MW-10D/MW-4D ——MW-10S/MW-4 MW-11D/MW-4D MW-11S/MW-4 MW-12D/MW-4D MW-12S/MW-4 MW-13D/MW-4D MW-13S/MW-4 MW-14D/MW-4D MW-14S/MW-4
Correlation Plot - Compliance Well vs. Background DATE
Total Dissolved Solids
SEPTEMBER 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN FIGURE
10-56
CATAWBA COUNTY, NORTH CAROLINA

10
µg/L
0
Sep-10
2L Standard: 1 ug/1
Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15
MW-10D MW-11D MW-11S MW-12D MW-12S MW-13D MW-13S MW-14D MW-14S MW-4 MW-4D
DATE
Antimony in Compliance Wells
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN FIGURE
CATAWBA COUNTY, NORTH CAROLINA
7�
May-15
SEPTEMBER 2015
10-57

10
1
µg/L
0
Sep-10 Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
MW-10D MW-11D MW-11S MW-12D MW-12S MW-13D MW-13S MW-14D MW-14S MW-4 MW-4D
Arsenic in Compliance Wells
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
DATE
FIGURE
SEPTEMBER 2015
CATAWBA COUNTY, NORTH CAROLINA
10-58

1000
100
2L Standard: 700 ug/1
µg/L
Ar—
MAN
10
Sep-10 Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
tMW-10D —*—MW-11D —X--MW-11S —I--MW-12D --MW-12S —BMW-13D MW-13S MW-14D tMW-14S—11—MW-4 --Ar- MW-4D
DATE
Barium in Compliance Wells
SEPTEMBER 2015
F)R DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN FIGURE
10-59
CATAWBA COUNTY, NORTH CAROLINA

1000
µg/L
100
10
Sep-10 Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12
MW-10D MW-11D MW-11S MW-12D
2L Standard: 700 ug/1
Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
MW-12S MW-13D MW-13S MW-14D MW-14S MW-4 MW-4D
Boron in Compliance Wells
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
DATE
FIGURE
SEPTEMBER 2015
CATAWBA COUNTY, NORTH CAROLINA
1 •1

10
2L Standard: 2 ug/1
1 e
µg/L
0
Sep-10 Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
MW-10D MW-11D MW-11S MW-12D MW-12S MW-13D MW-13S MW-14D MW-14S MW-4 MW-4D
Cadmium in Compliance Wells
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
DATE
FIGURE
SEPTEMBER 2015
CATAWBA COUNTY, NORTH CAROLINA

10
2L Standard: 10 ug/1
µg/L
1
Sep-10 Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
MW-10D MW-11D MW-11S MW-12D MW-12S MW-13D MW-13S MW-14D MW-14S MW-4 MW-4D
DATE
Chromium in Compliance Wells
SEPTEMBER 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN FIGURE
10-62
CATAWBA COUNTY, NORTH CAROLINA

10000
1000
2L Standard: 300 ug/1
100
00�
�SZ Od=
oe
ug/I
10
1
Sep-10 Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
MW-10D MW-11D MW-11S MW-12D MW-12S MW-13D MW-13S MW-14D MW-14S MW-4 MW-4D
DATE
Iron in Compliance Wells
SEPTEMBER 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN FIGURE
10-63
CATAWBA COUNTY, NORTH CAROLINA

ug/I
100
10
1 _
Sep-10 Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
MW-10D MW-11D MW-11S MW-12D MW-12S MW-13D MW-13S MW-14D MW-14S MW-4 MW-4D
DATE
Lead in Compliance Wells
SEPTEMBER 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN FIGURE
10-64
CATAWBA COUNTY, NORTH CAROLINA

1000
100
2L Standard: 50 ug/I
ug/I
10
1
Sep-10 Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
MW-10D MW-11D MW-11S MW-12D MW-12S MW-13D MW-13S MW-14D MW-14S MW-4 MW-4D
DATE
Manganese in Compliance Wells
SEPTEMBER 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN FIGURE
10-65
CATAWBA COUNTY, NORTH CAROLINA

10.00
ug/I
1.00
0.10
%*- --w- -
:-9
0.01
Sep-10 Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15
MW-10D MW-11D MW-11S MW-12D MW-12S MW-13D MW-13S MW-14D MW-14S MW-4 MW-4D
DATE
Mercury in Compliance Wells
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN FIGURE
CATAWBA COUNTY, NORTH CAROLINA
May-15
SEPTEMBER 2015
MO.

100
76 Standard! 100ugli
10
ug/I
1
Sep-10 Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
MW-10D MW-11D MW-11S MW-12D MW-12S MW-13D MW-13S MW-14D MW-14S MW-4 MW-4D
Nickel in Compliance Wells
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
DATE
FIGURE
SEPTEMBER 2015
CATAWBA COUNTY, NORTH CAROLINA
10-67

10000.00
1000.00
100.00
10.00
mg/I
1.00
0.10
0.01 —
Sep-10 Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
MW-10D MW-11D MW-11S MW-12D MW-12S MW-13D MW-13S MW-14D MW-14S MW-4 MW-4D
DATE
Nitrate in Compliance Wells
SEPTEMBER 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN FIGURE
10-68
CATAWBA COUNTY, NORTH CAROLINA

10
8
2L Standard: 6.5 - 8.6 STD
STD
6 IX
4
Sep-10 Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
--*—MW-10D MW-11D MW-11S MW-12D MW-12S MW-13D MW-13S MW-14D MW-14S MW-4 MW-4D
F)�
pH in Compliance Wells
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
DATE
FIGURE
SEPTEMBER 2015
CATAWBA COUNTY, NORTH CAROLINA
1 ••

ug/I
100
10
1
W
0
Sep-10 Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15
MW-10D MW-11D MW-11S MW-12D MW-12S MW-13D MW-13S MW-14D MW-14S MW-4 MW-4D
DATE
Selenium in Compliance Wells
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN FIGURE
CATAWBA COUNTY, NORTH CAROLINA
J
May-15
SEPTEMBER 2015
10-70

1000
2L Standard: 250 ug/I
100
10
mg/I
AL
01
0
Sep-10 Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan'
-15 May-15
MW-10D MW-11D MW-11S MW-12D MW-12S MW-13D MW-13S MW-14D MW-14S MW-4 MW-4D
F)�
Sulfate in Compliance Wells
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
DATE
FIGURE
SEPTEMBER 2015
CATAWBA COUNTY, NORTH CAROLINA
10-71

1000
2L Standard: 250 ug/I
100
lor-
10
mg/I
1
0
Sep-10 Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15 May-15
MW-10D MW-11D MW-11S MW-12D MW-12S MW-13D MW-13S MW-14D MW-14S MW-4 MW-4D
F)�
Total Dissolved Solids in Compliance Wells
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
DATE
FIGURE
SEPTEMBER 2015
CATAWBA COUNTY, NORTH CAROLINA
10-72

870
�-* M0
850
840
830
820
810
800
feet
790
780
770
IZ.11,
750
740
Sep-10 Jan-11 May-11 Sep-11 Jan-12 May-12 Sep-12 Jan-13 May-13 Sep-13 Jan-14 May-14 Sep-14 Jan-15
MW-10D MW-11D MW-11S MW-12D MW-12S MW-13D MW-13S MW-14D MW-14S MW-4 MW-4D
Groundwater Elevation in Compliance Wells
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
CATAWBA COUNTY, NORTH CAROLINA
May-15
DATE
SEPTEMBER 2015
FIGURE
10-73

500
0 500 1,000
HMV
F)l
R R
R R R
R R RR
Analyte
NC 2L
Groundwater or
IMAC'
Antimony
1*
Arsenic
10
Barium
700
Beryllium
4*
Boron
700
Cadmium
2
Chloride**
250,000
Chromium
10
Cobalt
1*
Copper"
1000
Iron
300
Lead
15
Manganese
50
Mercury
1
Nickel
100
Nitrate* *
10,000
Nitrite as N* *
11000
Selenium
20
Sulfate**
250,000
Thallium
0.2*
Total Dissolved Solids**
500,000
Vanadium
0.3*
Zinc**
1000
* Interim Maximum Allowable Concentration (IMAC)
** Unit reported in mg/L in standard, converted here
to pg/L to match units displayed on figure.
All units shown in pg/L.
1 - North Carolina 15A NCAC 02L.0202 Groundwater
Standards (As of 4/2013). Interim Maximum Allowable
Concentration shown where no standard is available
W M
W M M M
tQh M M M
M Mvl
M M W
MA M W
M M
M M
M M
Mvl M M
MM M M
Mvl M
--- M M M
M M
W
M
1n 1
10-74

300 0 300 600
KV X
LEGEND:
N N
N N N
N N N N
N N
N N N
N N N N
N N N N
N N N
---- N N N
• N N
< N
W< xm N
ram N N N N
mum N
a NI= N NV N X
N KV N X
N N
N
N
NN
N
N N
N
ri< N
m
N
N
N N
N N
Pf3AJ
N N
N
N
N
N N
m
N N
N
N
N
N
PGf#J
N N N
N
N
N N N
m
N N N
N
N N
N N
N N N
fU#J
N N N
PIi}J
N
N
N
N KV
N N< X
M
N N
N N
N
N N
rM
N N
N
N N
N; <<< WX
m
N N
N
N
N< p
N
PGi#J
N N
N u N
M
N
N
N
N
N
N NV • X
m
N
N
N
N
ANTIMONY ISOCONCENTRATION CONTOUR MAP - SHALLOW WELLS (S)
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
N 9N N
<N
N<

.��..,
r ' m--Nlg NO
o00
a
�aIDPOLL
n pG&@a 0 C�a� �J - x � : � •,�I
,yam
till
ML
GW4 U 5D *A _ "�•'
GWA`�° F
k MW�D r
_ J U -
: n33D (6.41 J)
t
N
-A —17D r.
ry
GWA`43D
�a
AL-3D
raj Qa ( a
-
6D
'•
MW 3D AL-4D Qpc �a oo�
A7 —2OD
—'0
n5®
AAA 2D
I ��G3MC s
..
-� 3D
<'13j (<0.5u)
GWA` �®
�
n n
•
A-7- A O®
,s
MW—,� ,®
UV' Ua a 1 2D
/ A�j-14®
J �luYo �:J� (0.48J)
• P
e
l2D
A74D
J.-'
23J (6.24J)
A� lD
d ale
7D
$-
i
Y +
Z x
N.;, ti• ,
•fie.
X
�. Al—GD
Q .➢
r
Z
__InnI1' �_Q•, � .���'�y Q�O.5M
W
Ora¢,
Af —4D
I J:'FP7J (0.21 J)
a „tl � •� k- F;3C5�.D Ga(--�ODM
M p p AFA D
Boa
UVIUW- I
Aft 2D
• : .�° - -
,
z -
:
h -
x
Y
0
300 0 300 600
Vw(
LEGEND:
N N N
N N N
N
N N
N N N
N N N N
N N N N
N N N
--- N N N
NN
NMJW*
NY Y J11\11 V
NZJWf " N N
V NYNX
MIW" VIIN X
NOTES:
NN N f�Md
N N N Nm
"NNNN N N N N NN
^^1 V M nIV
NW N N N N VN M
NV N NV N N
NV N M
N N N N NpqN N
N N N N IN
N N M Nm
N N N N N
ANTIMONY ISOCONCENTRATION CONTOUR MAP - DEEP WELLS (D)
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
N N N
z

Q
a atl E k
a -
fl
a�FT.
ir
N r
a
t7 r 5
W
W ,
Y
W
a
c�
f ,
r
300 0 300 600
PVV X
,
LEGEND:
N N
N
N I
N N N
N N N
N N N N
N N N N
N N N
--- N N N
• N N
< I`{ m N
W< Xw N
mm N N
m "m N
a I` = N
m" m N
NOTES:
N N N
N N N
N
ANTIMONY ISOCONCENTRATION CONTOUR MAP - BEDROCK WELLS (BR)
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
N 4I N
N N
PVV N X
NV N X
N NN -
N WN •
<p
N<

300 0 300 600
KV X
LEGEND:
N N N
N N N
N N N
N N N
N N
N N N
N N N N
N N N N
N N N
---- N N N
• N N
< N
W< xm N
ram N N N N
mum N
a NI= N w N X
II#ifJ N w N X
N N
N
N
N
N N<N
N
N
N
N
ri< N
m
N
N
N N
N N
Pf3AJ
N
N
N
N
N
N N
m
N
N
N
N
N
N
PGf#J
N N N
N
N
N N N
m
N N
N
N
N N
N N
N N N
fU#J
N N N
PIi}J
N
N
N
N KV
N N< X
M
N
N
N N
N
N N
rM
N N
N N
N
N; <<< WX
m
N
N
N
N
N< p
N
PGi#J
N
N
N
u
N
M
N
N
N N
N
N NV • X
m
N
N
N
N
ARSENIC ISOCONCENTRATION CONTOUR MAP - SHALLOW WELLS (S)
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
N 9N N
<N
N<

t
It:.
^
W y.
WA6D
A '
INDUSTRIAL
LANDFILL #1
(PH SE I CELL 1
�Ww
� m
AL�aD
Ga1- 2J. DU U U QVU U
MW,4 3D r , AL,64D QpcQ�C oo�
AB4 5D
MLL
AB.p4 0D
MW42D
7
a �
Z
Z
Q'
W
N
� 3
kn
X
a
y
K
7
O
F
Z
O
U
Z
O
Q
H
Z
w
U L
Z
O
U
O
x
U
a
J�
J
a
S
a
a
w .
J
Ir
J
a
a
a
fl �
�v
N r
a
w
z
w
w
Y
0
w
O
a
f
300 0 300 600
PVV X
r BG;,4 D
NOTES:
N
N
LEGEND:
N N N
N N N
N N N
N N N
N N N N
N N N N
N N N
N N N
• N N
< I`{ m N
W< Xw N
mm N N N N
m "m N
a I` = N NV N X
mmm N NV N X
N N N N N N N<N -
N N N WN -
m N N N N N N N N N N N
m N N N
m N N N N f`V1/ N N< X
M N N N N N N N
f`�pJ N N N N N [4 <<< WX
m N N N N N< p N
m N N N p N
M N N N N N N I`V1/ • X
m N N N N
ARSENIC ISOCONCENTRATION CONTOUR MAP - DEEP WELLS (D)
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
N 4I N
<p
N<

300 0 300 600
NV X
NOTES:
N
N
LEGEND:
z : N
N N
N N
N N
N N
N N
---� N N
• Rm N
W. xm N
ram N N
mum N
a NI= N
II##i}J N
N N N
N N
N
N
N
N
N
N
N
N
KV N X
w N X
N N N N N
N N- N
m N N N N N N N N N N N
fU#J N N N
PIi}J N N N N KV N N X
M N N N N N N N
rM N N N N N N - WX
m N N N N N• p N
PGi#J N N N u N
M N N N N N N fvv X
m N N N N
ARSENIC ISOCONCENTRATION CONTOUR MAP - BEDROCK WELLS (BR)
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
N 9N N
N
N

Lt }
IM!
qpm&@Im 0 @[ELL
•
GW�' �k�S
D
r
y
DG�G��a
�aa�po�
Qpm§12 ODD
MW,4S
LEGEND:
N N
N N
N N
N N N
N
N N
N N N
N N N
N N N
N N N
N N N
N N
• I`= N
W Xw N
mm N N
m "m N
a I` = N
m" m N
N
N
N
N
N
N
PVV N X
NV N X
z
NOTES:
N
N
N
N
N N
92 �����
m
N
N
N N
N N
m N
N N
N
N
N N
i m N
N N
N
N
N
m N
N N
N
N
N N N
m N
N
N N
N N
N N
N N N
m N
N N
-
m
N
N
N
N W
N N X
GWAi l S
M N
N
N N
N
N N
f`�pJ N
N
N N
N
N
WX
m
N
N
N
N
No p
N
m
N
N N
p
N
M N
N
N N
N
N w X
' m
N
N
N
N
u
300 0 300 600
PVV X
BARIUM ISOCONCENTRATION CONTOUR MAP - SHALLOW WELLS (S)
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
N 4I N
p
N

.....ram .. _ -.
M G
.,
LE END
N N N
qpm&@Im 0 @ImL �'j - - - - - -
N N N
dJ
I I R.
20V3J _
AB�lil
33J�26J'
GWAp3® a
/'1119J"lll�L�1
52J��4J'
AB40D r AB45D
POLL ABJ4 3D
,a ABJ44D
z
W
U ..
.�
Z
O
U
J�
Q
F
O
owe
zIr
W
Z
W
W
0
W
a
a
f
r
1, Q� Laalopou�
AL14D qPM§[2 00D
AB.,4 I D
GWA,4D
23®JA®J'
AB'4 ®440
MIA
is
21
�.
�.
_ -
,J4 D
140V20j_,'_
300 0 300 600
PVV X
NOTES:
N
N
I IWVV
f`�pJ
M N
f`�pJ N
I T�JV
M N
I NJV
N
N
N
N
N
N
N
N
N N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N N N N N N N N
N N N NN
N
N X
N X
11
N N N N N N N N N N N
N N N
N N N N W N N X
N N N N N N
N N N N N WX
N N N N No p N
N N N p N
N N N N N w X
N N N N
BARIUM ISOCONCENTRATION CONTOUR MAP - DEEP WELLS (D)
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
N 4I N
p
N

300 0 300 600
NV X
LEGEND:
Q� N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
--- N
N
N
N
N
• rm N
W. xm N
ram N N
mum N
a NI= N
II##i}J N
NOTES:
N N N
N N N
N
m
N
a
N
N
N
w N X
w N X
N N N N N
N NN
m N N N N N N N N N N N
fU#J N N N
PIi}J N N N N KV N N X
M N N N N N N N
rM N N N N N N - WX
m N N N N N• p N
PGi#J N N N u N
M N N N N N N fvv X
m N N N N
BARIUM ISOCONCENTRATION CONTOUR MAP - BEDROCK WELLS (BR)
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
N 9N N
N
N

g Iltlw. Q_t..
Qp &@Im 0 @[ELL �l
•
`i:
i
DEMOLITION
.-15J �� �
c ^'
7
AB J4 6S
(IF",
DOD ;
AB.J413 -
ALJ43 O- 15
M,
p
1 �N,
C . ■
AB-,48
Q
S x"
a atl E k
fl �„
m 1.
N r
a
Z
W
W
Y
W
a
a
u f �
f
GWA,4 x.
It
300 0 300 600
PVV X
<r5:2u i Pr 6— 27u V
LEGEND:
-�
N N N
N N N
N N N N
N
N N
N N N
N N N N
N N N N
N N N
N N N
• N N
< I`{ m N
W< Xw N
mm N N
m "m N
a I` = N
m" m N
N N
PVV N X
NV N X
NOTES:
N N N
N NN
•
N
N N
N
WN •
m
N
N
N N
N N
m N
N N
N N
N N
m N
N N
N
N
N
m N
N N N
N
N N N
m N
N N N
N N
N N
N N N
m N
N N
m
N
N N
N f`V1/
N N< X
M N
N
N N
N
N N
f`�pJ N
N N N
N [4 <<< WX
m
N N
N N
N< p
N
m
N N N
p N
M N
N
N N
N
N I`V1/ • X
m
N N
N
N
BERYLLIUM ISOCONCENTRATION CONTOUR MAP - SHALLOW WELLS (S)
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
N 4I N
<p
N<

300 0 300 600
KV X
N N N
N N N
N N
N N N
N N N N
N N N N
N N N
--- N N N
• N N
<P= N
W< xm N
ram N N N
mum N
a NI= N w
II##i}J N w
NOTES:
N N N N NN
N N N N ri< N
N
N
N X
N X
m N N N N N N N N N N N
fU#J N N N
PIi}J N N N N KV N N< X
M N N N N N N N
rM N N N N N N; <<< WX
m N N N N N< p N
PGi#J N N N u N
M N N N N N N NV • X
m N N N N
BERYLLIUM ISOCONCENTRATION CONTOUR MAP - DEEP WELLS (D)
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
N 9N N
<N
N<

o _
z
z
W
U •.
I
J
to ,
Q
K
a atl E k
z .!
Z
Nr
W
W
Y
W
c�
f ,
r
xr
300 0 300 600
PVV X
LEGEND:
N N
N N
N N N
N N N N
N N N N
N N
---- N N
• N
< I`{ m N
W< Xw N
mm N N N N
m "m N
a I` = N NV N X
mmm N NV N X
N N N N NN -
N N N WN •
BERYLLIUM ISOCONCENTRATION CONTOUR MAP - BEDROCK WELLS (BR)
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
N 4I N
<p
N<

Qp &@Im 0 @[ELL �J
., ee
r
y
,r, �1"iF"«4}W- �"a'A�LL :.•� '•i� +m a �<� ax �q.�3`�'3: _ ..
X GWkm�'d
�.pw
S x"
a atl E k
S
� - - - is � .�•A
fl
-a _,
N r
a
W
Z _ -
W
cn
W
Y
0
W
a
a
f
>.
r
300 0 300 600
PVV X
LEGEND:
N N
N N N
N N N
N N N
N
N N
N N N
N N N N
N N N N
N N N
N N N
• N N
< I`{ m N
W< Xw N
mm N N N N
m "m N
a I` = N NV N X
mmm N NV N X
NOTES:
N N
N
N
N N N<<N •
N
N
N
N N <N -
m
N
N
N N
N N
m N
N N
N
N N N
m N
N N
N N
N
m N
N N
N
N
N N N
m N
N
N N
N N
N N
N N N
m N
N N
m
N
N
N N f`V1/
N N< X
M N
N
N N
N
N N
f`�pJ N
N
N N
N
[4 <<< WX
m
N
N
N
N N< p
N
m
N
N N
p
N
- M N
N
N N N
N M X
m
N
N
N
N
BORON ISOCONCENTRATION CONTOUR MAP - SHALLOW WELLS (S)
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
N 4I N
<p
N<

300 0 300 600
NV X
NOTES:
N
N
LEGEND:
N N
N N
N N N
N
N N
N N N
N N N
N N N
N N N
---® N N N
• N N
<P= N
W< xm N
ram N N
mum N
a NI= N
II##i}J N
N N N
N N
N
N
N
N
N
N
w N X
w N X
N N N N <<N
N N <N
m N N N N N N N N N N N
fU#J N N N
PIi}J N N N N KV N N< X
M N N N N N N N
rM N N N N N N; <<< WX
m N N N N N< p N
PGi#J N N N u N
M N N N N N N NV • X
m N N N N
BORON ISOCONCENTRATION CONTOUR MAP - DEEP WELLS (D)
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
N 9N N
<N
N<

aABAR
O
:
Z
k
o
U
Z
O
a .
_ ?
U -
a _
d atl E k
kw MY �GJaDC�O�
g.
O .. a
ZZ
N r
Xf
a
Z
W
W
Y
0
W
a
}
r
300 0 300 600
PVV X
NOTES:
N
N
LEGEND:
N N N
N N N
N N N
N N N
N N N N
N N N N
N N N
--- N N N
• N N
< I`{ m N
W< Xw N
mm N N
m "m N
a NIM N
m" m N
N N N
N N
N
oF
N N N N <<N •
N N <N -
N
N X
N X
m N N N N N N N N N N N
m N N N
m N N N N f`V1/ N N< X
M N N N N N N N
f`�pJ N N N N N [4 <<< WX
m N N N N N< p N
m N N N p N
- M N N N N N N M • X
.p m N N N N
BORON ISOCONCENTRATION CONTOUR MAP - BEDROCK WELLS (BR)
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
N 4I N
<p
N<

G« V
INUURSTRT��Q L .r g <<
Mom FILL #1
T
I I
« `f g g <
g << s ��
DEMOe�ITION ��_,?�' : a.r t � � '` ' y < � „` '� , E•/ ,+& ��.t,
fe
u
g << $" `+. -
_
r
•` ., 9_ NDFILL i' � Y N �;����"x,' ,
g x .� «
/
N ek i y' 4
Ap, III
•c PV STRUCTURAL � 3r
FILL'g <<
yy
e � bgfi
r J
+z
t� U
2aO %q0©;,o,
,
x . f DRY u_
= r.
ASH
LANDFILL (PHASE 1)
,<
j
''' \' •' B IN u <
z
M
• FGD RESIDUE-`� -
i
L NDFILL +
S. C
ynN'
o
,r
a,
' K

300 0 300 600
NV X
NOTES:
N
N
LEGEND:
N N
N N
N N N
N
N N
N N N
N N N
N N N
N N N
---® N N N
N N
• rm N
W. xm N
ram N N
mum N
a NI= N
II##i}J N
N N N
N N
N
N
N
N
N
N
w N X
w N X
N N N N g N
N N N
m N N N N N N N N N N N
fU#J N N N
PIi}J N N N N KV N N X
M N N N N N N N
rM N N N N N N WX
m N N N N N• p N
PGi#J N N N u N
M N N N N N N fvv X
m N N N N
CHLORIDE ISOCONCENTRATION CONTOUR MAP - DEEP WELLS (D)
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
N 9N N
N
N

300 0 300 600
mmmmmmff �
my X
NOTES:
N
N
N
N
z
N
N
N
N
I`1Yv N X
PVV N X
N N N N N N N g N
N N N N N
N N N N N N N N N N N
N N N
N N N N I`V'v N N X
N N N N N N
N N N N N WX
N N N N No p N
N N N p N
N N N N N I`V'v X
N N N N
CHLORIDE ISOCONCENTRATION CONTOUR MAP - BEDROCK WELLS (BR)
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
N �m N
p
N

Gil
GWA,�38
V
MW d 38
MW;-10 2S
MW`148
AB.,48II AL61
300 0 300 600
PVV X
LEGEND:
N N
N N
N N
N N N
N N
N N N
N N N
E
N N N
N N N
N N N
N N
• I`= N
W Xw N
mm N N
m "m N
a I` = N
m" m N
N
N
N
N
N
N
N
PVV N X
NV N X
z
NOTES:
N N
N
N
N
N N N
N
N
N
N
N• N
m
N
N
N N
N N
m N
N N
N
N
N N
m N
N N
N
N
N
m N
N N
N
N
N N N
m N
N
N N
N N
N N
N N N
m N
N N
m
N
N
N
N f`V1/
N N X
M N
N
N N
N
N N
f`�pJ N
N
N N
N
N
WX
m
N
N
N
N
No p
N
m
N
N N
p
N
M N
N
N N
N
N I`V1/ X
m
N
N
N
N
CHROMIUM ISOCONCENTRATION CONTOUR MAP - SHALLOW WELLS (S)
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
N 4I N
p
N

0
O
O
W
p ll)
STRI L ,r ruv
IFILL #1
CELL 1-4) -' p
W. X '�
'' fk N N N
N
�; �€ Plp PVV. mN N
N N N
[LEM01311 10
0 3 N N N N rN
Y• { N N N N
.ti e e :
*'F AL •3D .
D
,a.
• N N N
N N
LL
w ®
-m ALl-?D W. xm N
,,.
2.5 �'L.34j � ;' Ad ramN N N N
AB-1613D ;4 r{ifiiiili}•1 N
aNI#itfJ N w N X
{
LI1#ifJ N w N X
2.- T.32J.''.' MW ;�..
•14D x
1.2
K fir, A6�9® AL'4®
RY
YYY ri ,
y.'
: t
r.
h %
4=
2 1.1 41 ,
MWI fill " D
7 �J�-�'f/,.w -a: rN. `e"'.-`,% A �:�\.4'e•�e1 �1�
4
ea Q
, e
� TMw •
I
Ma
Y /
J , ,
AB`5D
AB 3 AB:2D
$ € h
Y
GWA,1D ;y
u
e
300 0 300 600
KV X
NOTES:
N N N N N N N N
N N N N N•N
N
m N N N N N N N N N N N
fU#J N N N
PIi}J N N N N KV N N X
M N N N N N N N
rM N N N N N N WX
m N N N N N• p N
PGi#J N N N u N
M N N N N N N NV X
m N N N N
CHROMIUM ISOCONCENTRATION CONTOUR MAP - DEEP WELLS (D)
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
N 9N N
N
N

d.
A
INDUSTRIAL
LANDFILL #1
(PH SE I CELL
D oL7I
LANDFILe�
�j
LANDFILL►, .a� ' ���w _. �` �. 1,,
r
u..
!n18�"S BR
b
7.41 J ° r
O
y
Z L
O
r.
_ r.
U
I
to •
Q
K
a atl E k
z .!
t7 r 5
W
W
Y
W
a
c�
f ,
r
J�-
300 0 300 600
PVV X
AB'4 BR
0AI ,26J���'
LEGEND:
N N N
N N N
N N
N N N
N N N N
N N N N
N N N
--- N N N
N N
• I`{pJ N
W Xw N
mm N N N N
M "= N
a NIM N PVV N X
mmm N NV N X
CHROMIUM ISOCONCENTRATION CONTOUR MAP - BEDROCK WELLS (BR)
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
N 4I N
p
N

N r
Q,
J
W r� C�C�D GODM_
0
N
a
a
r
L5 U a U QLSLSo ° D
I MW 78 .
. _ .T`. ..
got Q °
uU
" �{s
300 0 300 600
mmmmmmff �
NV X
LEGEND:
N
N N N
N N N
N N N N
N
N N
N N N
N N N N
N N N N
N N N
--- N N N
• N N
< ffm N
W< AM N
mm N N N N
mmm N
a I` = N w N X
mmm N NV N X
NOTES:
N N N
N NN •
N
N N
N ri< N-
m
N
N N N
N N
mm N
N N
N N N N
m N
N N
N N
N
w N
N N N
N
N N N
m N
N N N
N N N N
N N N
mw N
N N
m
N
N N N W
N N< X
M N
N
N N N
N N
I`{fJ N
N N N
N r* <<<WX
m
N N
N N N < p
N
w
N N N
p N
M N
N
N N N
N I`1 V X
m
N N
N N
COBALT ISOCONCENTRATION CONTOUR MAP - SHALLOW WELLS (S)
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
N �m N
<p
N<

r.
'. .
INDUSTRIAL= ,� _ 3.3(29f �ti•„,. ,,
LANDFILL.#1 '
(PHASE I CELL 1-4) « MA X _
1 2 101.9 )
c< IW« !' z wa< X
p
2s Nv� x DEMOLITION
Y Li - LANNDDFIFILL-1
IW« X A� BS E' lTi\ll� << W<« X
T. ASH
BASIN
L ND FILL'F
(PHASE II)
wy« X NY - a yX'
wd« X <` X'
p
"• 15.8 I%fl9p
PV STRUCTURAL .�, pp p �+
FILL ,2.4
p </
66(561�
2,Z 1'h'< X �Uq< X 24 (212 )
rNft.oel
DRY ASH �
' LANDFILL _
(PHASE ,;
�22 f62.1) p.
•�« p11Y x. XT 64�U6+
ASH p
BASIN 43(44
t
FGD RESIDUE 9410891'
LANDFILL << p W< x y p �
wv A% ... �, C.' Ar
\±, p 1 Iw k +

�.. w,.
01
Qp &@Im 0 @ELLtill
�l
h
tAVR .
Q
Z
;
- -
"¢r_
W
r � "
Aw
Q
o
�
z
O
U
Z
Q
F
Z
W....,
.
Z
O
U
U
J
F
a atl E k
� d
fl
z
W
Z-
W
W
Y
W
Ir- -
Ir
17-
a
c�
f ,
>.
r
300 0 300 600
PVV X
NOTES:
N
N
LEGEND:
N N
N
N I
N N N
N N N
N N N N
N N N N
N N N
--- N N N
• N N
< I`{ m N
W< Xw N
mm N N
m "m N
a I` = N
m" m N
N N N
N N
COBALT ISOCONCENTRATION CONTOUR MAP - BEDROCK WELLS (BR)
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
N 4I N
N
N
PVV N X
NV N X
N NN -
N WN •
<p
N<

I NDFILL
(PHASE I
• 1,500 NV < Xy.
I I a p p
8'-60o fullp 20,500J + W. < X3,400 W <
ION
r
p
P
F, < p
<W < X <NV < X
5,E
p �v < X
p
< rvv <
p.
480 W< X
P,
51 00 W-I< x
. ts
p
54,000 P(1440
p
12,300 \A/ < X
p
<Nv < X
pt
00 W llx� *6
♦ ..* is
DRY ASH
LANDFILL\
(PHASE 1)
:,i;; p <
f ol <KV < X
f

L
MW,4 3D
240J �r i �fZGU
PV STRUCTUR L
FILL
L
INDUSTRIAL
LANDFILL #1
(PH SE I CELL 1-4)
. ............
AB.,4 5D
,. AL4D
�9000 �Q. �00
AB43D
AB6110D
rm
¢
o
t kw MY (FL u-
- e �: �•� d
z
N
m s "Olt -
I
y
Z
Y S
o
AB,]aD
T,
`-21 D
QJ qW6
B 4D ,ram
AB �3D
o �11 0
300 0 300 600
PVV X
MW61fl4
&M AB��ID
1 7C
NOTES:
N
N
LEGEND:
_W,
N N N
N N N
N N N N
N
N N
N N N
N N N N
N N N N
N N N
N N N
• N N
< I`{ m N
W< Xw N
mm N N
m "m N
a I` = N
11` " m N
N N
PVV N X
NV N X
N N N N N N N<<N •
N N N N <N -
m N N N N N N N N N N N
m N N N
m N N N N f`V1/ N N< X
M N N N N N N N
f`�pJ N N N N N [4 <<< WX
m N N N N N< p N
m N N N p N
M N N N N N N I`V1/ • X
m N N N N
IRON ISOCONCENTRATION CONTOUR MAP - DEEP WELLS (D)
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
N 4I N
<p <<
N<

300 0 300 600
KV X
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
--- N
N
N
•
N
N
<P= N
W< xm N
ram N N N
mum N
a NI= N w
II##i}J N w
NOTES:
N N N N N N N <<N
N N N N N <N
N
N
N X
N X
m N N N N N N N N N N N
fU#J N N N
PIi}J N N N N KV N N< X
M N N N N N N N
rM N N N N N N; <<< WX
m N N N N N< p N
PGi#J N N N u N
M N N N N N N NV • X
m N N N N
IRON ISOCONCENTRATION CONTOUR MAP - BEDROCK WELLS (BR)
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
N 9N N
<p <
N<

r
ow
Tr
y
GWAF, 38
i
- � r
. �Oa
•
All,
Fw n
f POLL
MS A2 UFi.
F �� -
Z
Q y + —
Q _ is
Z C
W
U t
r n
h'
V
U d�
C
F�
pC�D GODMC
L_-_tJ-Cuvvu U tJ
Qp &@Im ooD
AL, 28
2.41y%�,!392J/
n 48
<0.1 U J'0.43J;' .,
300 0 300 600
mmmmmmff �
my X
AE
3'52 j' 5J—i_4/ F
mwqs
..:o
LEGEND:
N N
N N
N N
N N
N N N
N N N
N N N
N N N
--- N N N
• N N
N
N
N
N
N
z
< ffm
N
W< AM
N
mm
N
N
N
N
mmm
N
a I` =
N
I`1Yv
N
X
e
mmm
N
NV
N
X
NOTES:
N N
N
N
N N N N•
N
N
N
N ri< N-
m
N
N
N N
N N
w
N
N
N
N
N N N
m
N
N
N
N N
N
Tk. w
N N N
N
N
N N N
m
N N
N
N
N N
N N
N
N N
m
N N N
.. m
:
N
N
N N I`11'v
N N< X
M
N
N
N N
N
N N
I`{fJ
N N
N N
N
r* <<<WX
m
N
N
N
N N < p
N
r- w
N
N
N
p
N
M
N
N
N N N
N
I` V X
' m
N
N
N
N
u
LEAD ISOCONCENTRATION CONTOUR MAP - SHALLOW WELLS (S)
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
N �m N
<p <
N<

LJ— \L JL/lJ UICJ UP U
it
Pe f
a:, R
f
xil
GWA',�3D
VF G.14i:r'°.BUJ)_
d
AB4 8D
m
e �JoUV AI4J,_� �D DLN U Lr�C�JUU
9
fi LUPFULL
13D _ AL4D Qpca@Im ooD
UJ
1 4
,
r
ABIaGD
F ,� <0.1 U 1 r ��.� U
<11U]�Z.luj�
FI @mu@mm ml, ABJ613D
POLL0.14J it1�'*J U ' .
AB'4 GD
AS4 2D 2.l1 " 4J ;_,
r AB4 4D GL-o57 lJ l�OS J m;!
K I&W
91
AB'p4D
71
L F ¢¢
MW
0.11 .121'''
mom•.
4
L.i
fay
Ate,.
14*
300 0 300 600
mmmmmmff �
my X
GWA14D'
1.11�'371 J�/
mwi4
C.1 ej OLA5
��U U AB',4 D
e
boa 0.41fzLlUJ,
m
AB.,�2D
0.42 j' 57J) _
-e
X
NOTES:
N
N
LEGEND:
N
N
N N
N N
N N
N N
N N
---- N N
< ffm N
W< AM N
mm N N
mmm N
a I` = N
mmm N
N N N
N N
N
N
N
N
N
N N
N
N
N
N
N
N
N
N
I`1Yv N X
PVV N X
N N N N N•
N ri< N -
N N N N N N N N
N N N
N N N N I`V'v
N N N N
N N N N r* <<<WX
LEAD ISOCONCENTRATION CONTOUR MAP - DEEP WELLS (D)
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
N �m N
z
N N N
N N< X
N N
N N N N N < p N
N N N p N
N N N N N
N N N N
<p <
N<

t
z ©:
0
U
�14�A-A�����
300 0 300 600
PVV X
LEGEND:
N N N
N N N
N N N
N N N
N N N N
N N N N
N N N
--- N N N
• N N
< I`{ m N
W< Xw N
mm N N N N
m "m N
a I` = N NV N X
mmm N NV N X
LEAD ISOCONCENTRATION CONTOUR MAP - BEDROCK WELLS (BR)
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
N 4I N
<p <
N<

a
� �
11
C
a
m ..
F
c
{mWps�i,ggse'
V
i:.
S
t
x=
4,
�y e
w
4
a r
u .
300 0 300 600
KV X
AS•2S
LEGEND:
N N N
N N N
N N N
N N N
N
N N
N N N
N N N N
N N N N
N N N
N N N
• N N
< P###J N
W< xm N
ram N N N N
P####i}J N
a P#I##fJ N w N X
II #ifJ N w N X
NOTES:
N N
N
N
N
N
N<N
N
N
N
N
NN
P#fJ
N
N
N
N
N N
w
N
N
N
N
N
N N
m
N
N
N
N
N
N
PPi#J
N N N
N
N
N
N N
m
N N
N
N
N N
N
N
N
N N
PIi#J
N N N
P{i}J
N
N
N
N
PVV
N
N< X
M
N
N
N N
N
N
N
rl=
N N
N N
N
Pt <<< WX
Pii}J
N
N
N
N
N< p
N
PiiifJ
N
N
N
u
N
P{i}J
N
N
N N
N
N
PVV • X
m
N
N
N
N
MANGANESE ISOCONCENTRATION CONTOUR MAP - SHALLOW WELLS (S)
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
N 9N N
<p <
N<

.+ wlwi
{. d
GWA,�k�D
f
A63D l
'ooloIj
. c A
eF
MW,4 3D
AB40D I
,r
ML
A
INDUSTRIAL
LANDFILL #1
(PH SE I CELL 1-4)
PV/ DEMOLITION
-
p,
300 P(12�70
DRYA- H S
7,
530 '(._;
r
mile
00 (8 0
......... .
r AB
Ar
421
N6i�7
�Y.. .nyV
71�1,
• � 1
TJ * y
Mw,m D ,.
3 ��ZU ,
300 0 300 600
PVV X
GWA,w_3D
'04U_ _..
LEGEND:
-�
y
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N N
N
N
N
N
N
N
N N
N
N
< I`{ M N
W< Xw N
N N N N
m "m N
a I` = N NV N X
mmm N NV N X
NOTES:
N N N N N N N<N •
N N N N NN •
N
z
f`�pJ N N N N N N N N N N N
f`�pJ N N N
M N N N N f`V1/ N N< X
M N N N N N N N
f`�pJ N N N N N [4 <<< WX
M N N N N N< p N
f`�pJ N N N p N
M N N N N N N M X
u: M N N N N
MANGANESE ISOCONCENTRATION CONTOUR MAP - DEEP WELLS (D)
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
N 4I N
<p <
N<

�.. w,.
01
Qp &@Im 0 @ELL �l
till
ti
t
4, � V '
r h
z
w
Z
O
U
AJ0, R IIL p i
Y \a
300 0 300 600
PVV X
!r-
NOTES:
N
N
LEGEND:
N N
N N N
N
N
N
- N
N
N
N
N
N
N
N
N
N
N
N
N
N
---- N
N
N
•
N
N
< I`{ m N
W< Xw N
mm N N
m "m N
a I` = N
m" m N
N N N
N N
MANGANESE ISOCONCENTRATION CONTOUR MAP - BEDROCK WELLS (BR)
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
N 4I N
N
N
N
PVV N X
NV N X
N N N N <N •
N NN •
<p <
z
N<

300 0 300 600
KV X
LEGEND:
N N
N N N
N N N N
N N N
N
N N
N N N
N N N N
N N N N
N N N
--® N N N
• N N
< N
W< xm N
ram N N N N
mum N
a NI= N KV N X
N KV N X
N N
N
N
N
N N<N
N
N
N
N
ri< N
m
N
N
N N
N N
Pf3AJ
N
N
N
N
N
N N
m
N
N
N
N
N
N
PGf#J
N N N
N
N
N N N
m
N N
N
N
N N
N N
N N N
fU#J
N N N
PIi}J
N
N
N
N KV
N N< X
M
N
N
N N
N
N N
rM
N N
N N
N
N; <<< WX
m
N
N
N
N
N< p
N
PGi#J
N
N
N
u
N
M
N
N
N N
N
N NV • X
m
N
N
N
N
SELENIUM ISOCONCENTRATION CONTOUR MAP - SHALLOW WELLS (S)
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
N 9N N
<p <
N<

r
i
)
oUVD c A � '.ice
Y
s ' s 1 :` f r- W'
L12MD� POLL aPitul
• ,i " 11f��1
77-
ya
a t
' ae y s 1: - .y,'�,•.'- .art.. .. ", - >. ,� i:- .. �^' -'?'� - � y �'� i °r` us4 �� s'
., .. - �" ��..-0 � _vc .. , ..... -v'n•V'T' � •: � �. :'�� '� ,�`. yfi.,"' fig,=. ..
"-X R
�lOWD
/37J 0.5
r
+`rs,`'`r
..T
r AF�-17D
Hai (<0.5u) IDo LM[]
a AD LL5.
.. -
Q l�l 'Vppi�pp A` 43D
,
.
L& DpO
y € -� ra® M
v' Lr�lU' UU f (0.38J) ^
•
r Y
—1 4® -�
M� �D InI 1nn1 In1 r,
+;i ;.
gyp.
,.. _ -
o
Q r a
78
O-7 ® • Y r
Z
w :
r
uj Ole
o ,.
a
o - ,
�� r�i
z 45J (®. ) LAKE NORMAN
w t
low
mw
i Mo �
J ` 3 (0.28
LLJ
a
,w^ ¢ —3D
Ijjl �j ���jj� Ijjl Ijjl
T
r
U FO:'Ir A -2D
z
r
Q
300 0 300 600
Vw(
LEGEND:
N N N
N N N
N
N N
N N N
N N N N
N N N N
N N N
--- N N N
NN
NOTES:
N N NN
N N N Nm
SELENIUM ISOCONCENTRATION CONTOUR MAP - DEEP WELLS (D)
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
N N N
z

300 0 300 600
KV X
NOTES:
N
N
LEGEND:
N N
N N N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
---- N
N
N
•
N
N
<P= N
W< xm N
ram N N
mum N
a NI= N
II##i}J N
N N N
N N
N
N
N
w N X
w N X
N N N N <N
N ri< N
m N N N N N N N N N N N
fU#J N N N
PIi}J N N N N KV N N< X
M N N N N N N N
rM N N N N N N; <<< WX
m N N N N N< p N
PGi#J N N N u N
M N N N N N N NV • X
m N N N N
SELENIUM ISOCONCENTRATION CONTOUR MAP - BEDROCK WELLS (BR)
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
N 9N N
<N <
N<

-- DEMOLITION f>�� 'l
1
mw418
�
O ..
W
H
lL-
-
....,_,. •� ,
Z
..-.;,
Q
S x"
K
a atl E k
Q
fl,
,k �.
ZZ
ma
x
Q _
t7 r 5
f�
W
Y
0
a
>.
r
' . r
r'
M
``,
m
,.; 'I �� J
.. nn �q
300 0 300 600
PVV X
LEGEND:
N N
N N N
N N N
N N N
N
- N N
N N N
N N N N
N N N N
N N N
---� N N N
• N N
< I`{ m N
W< Xw N
mm N N N N
m "m N
a NIM N NV N X
mmm N NV N X
NOTES:
N N
N
N
N N N
<T«N •
N
N
N
N N<<<N •
m
N
N
N
N
N N
m N
N N
N
N N N
m N
N N
N N
N
m N
N N
N
N
N
N N
m N
N
N N
N N
N
N N
N N
m N
N N
m
N
N
N N
f`V1/ N
N< X
M N
N
N N
N
N
N
f`�pJ N
N
N N
N
[4 <<< WX
m
N
N
N
N N< p
N
m
N
N N
p
N
M N
N
N N
N N
I`V1/ X
m
N
N
N
N
SULFATE ISOCONCENTRATION CONTOUR MAP - SHALLOW WELLS (S)
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
N 4I N
<p
N<

e
INDUSTRIAL= TLANDFILL N9'
_ — (PHASE I CELL 1=4)
Af
g ` P
DEMOLITION {
LANDF OI.
ASBESTOS' IN "'
d L�'AND FILL
. ' 42:00
DRYASHi
t LANDFILL t
-p (PHASE II)
88!080
/eee
386080,' �
F \
4` \
V
P
Ile
if
6 V.°
h 9� A�
D RYI s\
�. LANDFILL _
�. (PHASE 1) t
V �� y:
.�y-
-Ile ASH
BASIN
l
o
FGD RESIDUE - 9
LANDFILL {
• /�' % wit:
h:
i' � 1
��i ��.AM, 4f
{ y '
ell i,
a rTa

300 0 300 600
NV X
NOTES:
N
N
LEGEND:
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
--- N
N
N
N
N
• rm N
W. xm N
ram N N
mum N
a NI= N
II##i}J N
N N N
N N
N
N
N
N
N
N
w N X
w N X
N N N N g N
N N N
m N N N N N N N N N N N
fU#J N N N
PIi}J N N N N KV N N X
M N N N N N N N
rM N N N N N N - WX
m N N N N N• p N
PGi#J N N N u N
M N N N N N N fvv X
m N N N N
SULFATE ISOCONCENTRATION CONTOUR MAP - BEDROCK WELLS (BR)
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
N 9N N
Ir
N

300 0 300 600
KV X
LEGEND:
W< xm
ram
mum
a NI=
N N N
N N N
N N N N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N N
N
N
N
N
N N N N
N
N w N X
N w N X
N N
N
N WN
N
N N
N ri< N
m
N
N N N
N N
Pf3AJ
N N
N
N N N N
m
N N
N
N N
N
PGf#J
N N N
N
N
N N N
m
N N N
N
N N N N
N N N
fU#J
N N N
PIi}J
N
N N N KV
N N< X
M
N N
N N N
N N
rM
N N
N
N
N N; <<< WX
m
N N
N N N< p
N
PGi#J
N N
N
u N
M
N
N
N N N
N NV • X
m
N
N
N N
THALLIUM ISOCONCENTRATION CONTOUR MAP - SHALLOW WELLS (S)
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
N 9N N
<N
N<

nk-
a
0
0
V
Z
O
U
V
9•t,♦
y
Q
4�r`.
�v
0
p
K
Q
}
p
wlRi
o
dam, .g
a
a
u
s
r
N
a �
300 0 300 600
KV X
NOTES:
N
N
4Xrl=1zl13
N N
N N
N N N
N N N
N N N
N N N
-- N N N
• N N
<P= N
W< xm N
ram N N
mum N
a NI= N
II##i}J N
N N N
N N
N
N
N
N W N
N ri< N
N
N
N
w N X
w N X
m N N N N N N N N N N N
fU#J N N N
PIi}J N N N N KV N N< X
M N N N N N N N
rM N N N N N N; <<< WX
m N N N N N< p N
PGi#J N N N u N
~ M N N N N N N NV X
v m N N N N
THALLIUM ISOCONCENTRATION CONTOUR MAP - DEEP WELLS (D)
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
N 9N N
<N
N<

a
a
0
a
0
a
o
V
S
O
y
Q,
0
p
K
Q
N
a
a
u
s
r
N
a
�
300 0 300 600
KV X
NOTES:
N
N
LEGEND:
N N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
--- N
N
N
•
N
N
<P= N
W< xm N
ram N N
mum N
a NI= N
II##i}J N
N N N
N N
N
N
N
N W N
N ri< N
N
N
w N X
w N X
m N N N N N N N N N N N
fU#J N N N
PIi}J N N N N KV N N< X
M N N N N N N N
rM N N N N N N; <<< WX
m N N N N N< p N
PGi#J I"'"N N N u N
f`�}J N N N N N N NV • X
fl N N N N
THALLIUM ISOCONCENTRATION CONTOUR MAP - BEDROCK WELLS (BR)
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
N 9N N
<N
N<

300 0 300 600
Kv X
LEGEND:
N N N
N N N
N N N
N N N
N
N N
N N N
N N N N
N N N N
N N N
N N N
• N N
< P###J N
W< xm N
ram N N N N
P####i}J N
a P#I##fJ N w N X
II #ifJ N w N X
N N
N
N
N N
N «T«N
N
N
N
N N
T«N
P#fJ
N
N
N N
N N
w
N
N
N
N
N
N N
m
N
N
N
N
N
N
w
N N N
N
N
N N N
m
N N
N
N
N N
N N
N N N
PIi#J
N N N
P{i}J
N
N
N
N PVV
N N< X
M
N
N
N N
N
N N
P{iifJ
N N
N N
N
Pt <<<
WX
Pii}J
N
N
N
N
N< p
N
PiiifJ
N
N
N
u
N
P{i}J
N
N
N N
N
N PVV • X
m
N
N
N
N
TOTAL DISSOLVED SOLIDS ISOCONCENTRATION CONTOUR MAP - SHALLOW WELLS (S)
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
N 9N N
<N
N<

x n1000QpG�C 0 C�C� �l
h
GWA
' "•+ �.. ( - ,mow ,
X
ABJ47D
124 900 �
WA6D -
aMIR
�l �1,gwt�
132,900
MW43D
U
AR61-9n e 39000
,a ABJ44D
o„
sr-
r 4 ;
Z f AB
O ; ° 274
.N.; "
X
25
300 0 300 600
Pvv X
hc�,b� fib
� I AW ®D
x
AaaD
v _
LEGEND:
ME NO
—— —
NOTES:
N
N
f`I�J
f`f�pJ
f`�pJ
M N
f`�pJ N
f`�pJ
M N
N
N
N
N
N
N
N
N
N
N N N
N N
N
N
N
N
N
N
N N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
oF
N N N N g N
N N g N
N
N X
N X
z
N N N N N N N N N N N
N N N
N N N N f`V'v N N X
N N N N N N
N N N N N WX
N N N N No p N
N N N p N
N N N N N I`V'v X
N N N N
TOTAL DISSOLVED SOLIDS ISOCONCENTRATION CONTOUR MAP - DEEP WELLS (D)
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
N 4I N
p
N

300 0 300 600
NU X
NOTES:
N
N
LEGEND:
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
--- N
N
N
N
N
• rm N
W. xm N
ram N N
mum N
a NI= N
II##i}J N
N N N
N N
N
N
N
N
N
N
w N X
w N X
N N N N g N
N N g N
m N N N N N N N N N N N
fU#J N N N
PIi}J N N N N NU N N X
M N N N N N N N
rM N N N N N N - WX
m N N N N N• p N
PGi#J N N N u N
M N N N N N N Nv X
m N N N N
TOTAL DISSOLVED SOLIDS ISOCONCENTRATION CONTOUR MAP - BEDROCK WELLS (BR)
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
N 9N N
Ir
N

17
IND � T I L
L NDFILL
iJ L
J _ -
_ x
a atl E k
a '.gig' �'� •,q; K, .yti ,,.
-aFTy,
L
. r.
W
W
W .
a
J'74
f .�
a&
17-
>.
r
DORY ASH
'LANDFILL
,;;(PHASE II)
�I U �t -�2,J)
- - - IL-
1.7
300 0 300 600
Pvv X
i
LEGEND:
N N N
N N N
N N N N
N
N N
N N
N N
N N
N
N
N
N
N
N
N
N
N
< I`{ m N
W< Xw N
mm N N
m "m N
a I` = N
m" m N
N
N
N N
Pvv N X
Nv N X
NOTES:
N N N N
WN •
N
N N
N NN •
m
N N
N N
N N
m N
N N N
N N N
m N
N N
N N
N
m N
N N N
N
N N N
m N
N N N N N
N N
N N N
m N
N N
m
N N
N N f`V1/
N N< X
M N
N N N
N
N N
f`�pJ N
N N N N
[4 <<< WX
m
N N N
N N< p
N
m
N N N p N
M N
N N
N N
N I`V1/ X
m
N N N
N
VANADIUM ISOCONCENTRATION CONTOUR MAP - SHALLOW WELLS (S)
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
N 4I N
<p <
N<

a.
GWAI�3D
0
PV STiRU C�T1U ; ,
LEGEND:
INDUSTRIAL
LANDFILL #1
(PH SE I CELL 1-4�)
0
�� DRY ASH
LANDFILL
4 .ABr45D
ABrJ4 3D
'4 s)
7177-IN - P�.e
Z
e
i
x
a
o
<« ; •
z
0
Z
W
Z
o
U
J
S
_
W
wYk C�C�D
GODM
J
'E kw L�GJaDC�O�
Q
fn
fl
�
.a
ZZ
T
N
a
_
r
z..
W
Y
W
Ir
—
0
f
Ir
s
w,
QpM§[2 ODD
J.
I
N
N
N
N
N
N N N
N N N
N
N N
N N N
N N N
N N
N N
N N
® < I`{pJ N
ALr4D W< Xw N
@oT W ]'J, i u �'
I` '�J N N N N
GWA.,4P., m "m N
a NIM N Nv N X
mA 'J6 D
" " " �J N Kv N X
01 U),
ABr42D ABr�9D x T
a .
y
d
U, -
1, 1 D
0�T 1 �'�2qj e
300 0 300 600
Pvv X
NOTES:
N
N
N N N
N N
N WN -
N NN •
N N N N N N N N
N N N
N N N N f`V'v
N N N N
N N N N [4 <<<WX
N N N
N N< X
N N
N N N N N < p N
N N N p N
N N N N N
N N N N
VANADIUM ISOCONCENTRATION CONTOUR MAP - DEEP WELLS (D)
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
N 4I N
ARM
<p
N<

" 35 f(3.7 )
ASH
BASIN
FILL
W
® J �7.
9�.• C
FGD RESIDUE
LANDFILL
J'
i(
(PH SE I
V v v
i
V
0.]6JN10.44J)
36
1
(PHASE 1(
ASH
BASIN V
0 43J VJ

HDR Engineering, Inc. of the Carolinas
N.C.B.E.L.S. License Number: F-0116
440 S. Church Street, Suite 900
Charlotte, NC 28202-2075
704.338.6700
ISSUE DATE DESCRIPTION
PROJECT MANAGER CHAD HEARN, PE
DRAWN BY:
-
DESIGNED BY:
-
CHECKED BY:
-
APPROVED BY:
-
PROJECT NUMBER
000000000246409
NOT FOR
CONSTRUCTION
DUKE ENERGY CAROLINAS,LLC
�(` DUKE
ENERGY..
CATAWBA COUNTY
MARSHALL STEAM STATION
COMPREHENSIVE SITE
ASSESSMENT
NORTH CAROLINA
CROSS SECTION A -A'
GROUNDWATER ANALYTICAL RESULTS
0 1" 2° FILENAME I FIGURE 10-XXX.1.DWG
SCALE I AS NOTED
SHEET
FIGURE 10-123.1

1 1 2 3 4 1 5 6 1 7
I
900
850
AB-15D
AB-1
800
N
z j
0 0
a
w W
J n-
W n
750
W
2
7
QU
i
700
650
AB-155
Ana /L
Arsenic
511
Boron
3 100
Cobalt
2.7
Iron
18,600
Manganese
2,300
Total Dissolved Solids
654 000
Vanadium
1.4
AB-155L
Analytefil
Arsenic
864
Boron
930
Cobalt
6.1
Iron
15,400
Manganese
3100
Vanadium
1.6
AB-15D
Anal /L
Iron
2,700
ManganeseManganesel
200
Vanadium
1.4
AB-15BR
Anal a /L
Iron
I 1,300
Manganese
270
AB-12D
Ana L
Boronj
3 500
Chloride
464000
ManganeseManganesel
130
Total Dissolved Solids
1,530,000
Vanadium
2.5I+
AB-125
Anal L
Arsenic
145
Boron
66,600
Chloride
3,650,000
Iron
13 700
Manganese
6,400
Sulfate
923 000
Total Dissolved Solids
11600 000
Vanadium
1.1
AB- 12D
AB- 12SL
AB-12S
ttttttttK-IF LEV--I ---------
AB-125L
Analyte pgL
Arsenic
6,380
Barium
780
Boron
3,300
Iron
11,000
Manganese
950
Vanadium
2.6
900
850
800
M
N
0
W
V_
750
W
z
J
x
700
650
2400
2600
2800
3000
3200
3400
3600
3800
4000
4200
4400
4600
4800
DISTANCE
(ft)
HDR Engineering, Inc. of the Carolinas
N.C.B.E.L.S. License Number: F-0116
440 S. Church Street, Suite 900
Charlotte, NC 28202-2075
704.338.6700
SECTION
SCALE: HORIZ 1"=120' FIG 8-2
VERT 1"=30'
PROJECT MANAGER CHAD HEARN. PE
DRAWN BY:
-
DESIGNED BY:
-
CHECKED BY:
-
APPROVED BY:
-
ISSUE DATE DESCRIPTION
PROJECT NUMBER
000000000246409
NOT FOR
CONSTRUCTION
DUKE ENERGY CAROLINAS,LLC
MARSHALL STEAM STATION
DUKE COMPREHENSIVE SITE
`ENERGY. ASSESSMENT
CATAWBA COUNTY NORTH CAROLINA
NOTE-
1 CONCENTRATIONS OF CONSTITUENTS OF
INTEREST IN GROUNDWATER REPORTED IN
UNITS OF MICROGRAMS PER LITER (ug/L)
ANALYTE
NC 2L
GROUNDWATER IMAC
ANTIMONY
-ARSENIC
BARIUM
BERYLLIUM
BORON
CADMIUM
CHLORIDE*
CHROMIUM
COBALT
COPPER***
IRON
LEAD
MANGANESE
MERCURY
NICKEL
NITRATE***
-NITRATE AS N***
H (field)
SELENIUM
1**
10
700
4**
700
2**
250,000
10
1**
1,000
300
15
50
1
100
10,000
1,000
6.5 - 8.5
20
SULFATE***
250,000
THALLIUM
0.2
TOTAL DISSOLVED SOLIDS
500,000
VANADIUM
0.3**
ZINC*'*
1000
** Interim Maximum Allowable Concentration(IMAC)
*** Unit reported in mg/L in standard, converted
here to Ag/L to match units displayed on figure.
All units shown in pg/L except pH which is
standard units.
NOTES:
U = NOT DETECTED ABOVE LABORATORY
REPORTING LIMIT
J = ESTIMATED CONCENTRATION
3.0
= LESS THAN
LABORATORY REPORTING
LIMIT
J+ =
ESTIMATED
CONCENTRATION
BIASED
HIGH
J- =
ESTIMATED
CONCENTRATION
BIASED
LOW
= ESTIMATED TRANSITION ZONE (TZ) BEDROCK
(BR) CONTACT
*DNE = DOES NOT EXCEED
LEGEND
ED
IC
e
WATER TABLE SURFACE
ASH
FILL
UNCONSOLIDATED SEDIMENTS A
M1
M2
TZ
BR
CROSS SECTION A -A'
GROUNDWATER ANALYTICAL RESULTS
p 1" 2'. FILENAME FIGURE 10-XXX.2.DWG SHEET
SCALE AS NOTED FIGURE 10-123.2

HDR Engineering, Inc. of the Carolinas
N.C.B.E.L.S. License Number: F-0116
440 S. Church Street, Suite 900
Charlotte, NC 28202-2075
704.338.6700
ISSUE DATE DESCRIPTION
PROJECT MANAGER CHAD HEARN, PE
DRAWN BY:
-
DESIGNED BY:
-
CHECKED BY:
-
APPROVED BY:
-
PROJECT NUMBER
000000000246409
NOT FOR
CONSTRUCTION
DUKE ENERGY CAROLINAS,LLC
>, DUKE
ENERGY..
CATAWBA COUNTY
MARSHALL STEAM STATION
COMPREHENSIVE SITE
ASSESSMENT
NORTH CAROLINA
CROSS SECTION A -A'
GROUNDWATER ANALYTICAL RESULTS
0 1" 2° FILENAME I FIGURE 10-XXX.3.DWG
SCALE I AS NOTED
SHEET
FIGURE 10-123.3

1 1 2 1 3 1 4 1 5 6 1 7 8
900
800
M
N
z 7
0 0
a
w
w �
750
w
Z
7
2
CJ
700
650
NOTE:
1. CONCENTRATIONS OF CONSTITUENTS OF
A' INTEREST IN GROUNDWATER REPORTED IN
WEST
UNITS OF MICROGRAMS PER LITER (ug/L)
SB-1 MW-8D
MW-8S
LAKE NORMAN
— — — — — — — ------— — EL —— — — — — — — — — — — —
-----
7200 7400 7600 7800 8000 8200 8400 8600 8800 9000
DISTANCE (ft)
HDR Engineering, Inc. of the Carolinas
N.C.B.E.L.S. License Number: F-0116
440 S. Church Street, Suite 900
Charlotte, NC 28202-2075
704.338.6700
SECTION
SCALE: HORIZ 1"-120' FIG 8-2
VERT 1"=30'
PROJECT MANAGER CHAD HEARN. PE
DRAWN BY:
-
DESIGNED BY:
-
CHECKED BY:
-
APPROVED BY:
-
ISSUE DATE DESCRIPTION
PROJECT NUMBER
000000000246409
�
850
800
750
700
DUKE ENERGY CAROLINAS,LLC
MARSHALL STEAM STATION
NOT FOR if - DUKE COMPREHENSIVE SITE
CONSTRUCTION v ENERGY ASSESSMENT
CATAWBA COUNTY NORTH CAROLINA
ANALYTE
NC 2L
GROUNDWATER IMAC
ANTIMONY
-ARSENIC
BARIUM
BERYLLIUM
BORON
CADMIUM
CHLORIDE*
CHROMIUM
COBALT
COPPER***
IRON
LEAD
MANGANESE
MERCURY
NICKEL
NITRATE***
-NITRATE AS N***
H (field)
SELENIUM
1**
10
700
4**
700
2**
250,000
10
1**
1,000
300
15
50
1
100
10,000
1,000
6.5 — 8.5
20
SULFATE*"
250,000
THALLIUM
0.2
TOTAL DISSOLVED SOLIDS
500,000
VANADIUM
0.3**
ZINC*'*
1000
** Interim Maximum Allowable Concentration(IMAC)
*** Unit reported in mg/L in standard, converted
here to Ag/L to match units displayed on figure.
All units shown in f..ig/L except pH which is
standard units.
NOTES:
U = NOT DETECTED ABOVE LABORATORY
REPORTING LIMIT
J = ESTIMATED CONCENTRATION
3.0
= LESS THAN
LABORATORY REPORTING
LIMIT
J+ =
ESTIMATED
CONCENTRATION
BIASED
HIGH
J— =
ESTIMATED
CONCENTRATION
BIASED
LOW
? = ESTIMATED TRANSITION ZONE (TZ) BEDROCK
(BR) CONTACT
*DNE = DOES NOT EXCEED
LEGEND
ED
IC
e
— — — — — — WATER TABLE SURFACE
ASH
FILL
UNCONSOLIDATED SEDIMENTS A
M1
M2
TZ
BE
CROSS SECTION A -A'
GROUNDWATER ANALYTICAL RESULTS
p 1" 2'. FILENAME FIGURE 10-123.4.DWG SHEET
SCALE AS NOTED FIGURE 10-123.4

HDR Engineering, Inc. of the Carolinas
N.C.B.E.L.S. License Number: F-0116
440 S. Church Street, Suite 900
Charlotte, NC 28202-2075
704.338.6700
ISSUE DATE DESCRIPTION
PROJECT MANAGER CHAD HEARN, PE
DRAWN BY:
-
DESIGNED BY:
-
CHECKED BY:
-
APPROVED BY:
-
PROJECT NUMBER
000000000246409
NOT FOR
CONSTRUCTION
DUKE ENERGY CAROLINAS,LLC
�(` DUKE
ENERGY..
CATAWBA COUNTY
MARSHALL STEAM STATION
COMPREHENSIVE SITE
ASSESSMENT
NORTH CAROLINA
CROSS SECTION B-B'
GROUNDWATER ANALYTICAL RESULTS
0 1" 2° FILENAME I FIGURE 10-124.1.DWG
SCALE I AS NOTED
SHEET
FIGURE 10-124.1

1
2
3
7
i
WEST
750 -
C14
z
o
Q
w
LLJ
IIY
w
:D
0
7001,
W
Z_
J
2
U
Q
650
2000
2200
SB-15
HDR Engineering, Inc. of the Carolinas
N.C.B.E.L.S. License Number: F-0116
440 S. Church Street, Suite 900
Charlotte, NC 28202-2075
704.338.6700
2400
2600
ISSUE DATE DESCRIPTION
3000
AB-2S
Analyte (Ng/L)
Cobalt
3.1
Iron
470
Manganese
330
Vanadium
1.8
AB-2S
AB-2D
AB-2D
Analyte (Ng/L)
Iron
1,200
Manganese
440
Vanadium
1.8
3200 3400
DISTANCE (ft)
SECTION
B
SCALE: HORIZ 1 "=120' FIG 8-2
VERT 1 "=30'
PROJECT MANAGER CHAD HEARN, PE
DRAWN BY:
-
DESIGNED BY:
-
CHECKED BY:
-
APPROVED BY:
-
PROJECT NUMBER
000000000246409
3600
3800
NOT FOR
CONSTRUCTION
E NOR
4000
4200
4400
DUKE ENERGY CAROLINAS,LLC
>, DUKE
ENERGY..
CATAWBA COUNTY
4600
MARSHALL STEAM STATION
COMPREHENSIVE SITE
ASSESSMENT
NORTH CAROLINA
B,
EAST
850
750
700
650
.••
NOTE:
1. CONCENTRATIONS OF CONSTITUENTS OF
INTEREST IN GROUNDWATER REPORTED IN
UNITS OF MICROGRAMS PER LITER (ug/L)
ANALYTE
NC 2L
GROUNDWATER IMAC
ANTIMONY
1 **
ARSENIC
10
BARIUM
700
BERYLLIUM
4**
BORON
700
CADMIUM
2
CHLORIDE***
250,000
CHROMIUM
10
COBALT
1 **
COPPER***
1,000
IRON
300
LEAD
15
(MANGANESE
50
MERCURY
1
NICKEL
100
NITRATE***
10,000
NITRATE AS N***
1.000
pH (field)
6.5 — 8.5
SELENIUM
20
SULFATE***
250,000
THALLIUM
0.2
TOTAL DISSOLVED SOLIDS
500,000
VANADIUM
0.3**
ZINC***
1000
** Interim Maximum Allowable Concentration (IMAC)
*** Unit reported in mg/L in standard, converted
here to pug/L to match units displayed on figure.
All units shown in pug/L except pH which is
standard units.
NOTES:
U = NOT DETECTED ABOVE LABORATORY
REPORTING LIMIT
J = ESTIMATED CONCENTRATION
3.0 = LESS THAN LABORATORY REPORTING LIMIT
J+ = ESTIMATED CONCENTRATION BIASED HIGH
J— = ESTIMATED CONCENTRATION BIASED LOW
? = ESTIMATED TRANSITION ZONE (TZ) BEDROCK
(BR) CONTACT
*DNE = DOES NOT EXCEED
LEGEND:
WATER TABLE SURFACE
ASH
FILL
UNCONSOLIDATED SEDIMENTS
M1
M2
TZ
BR
CROSS SECTION B-B'
GROUNDWATER ANALYTICAL RESULTS
0 1" 2,, FILENAME FIGURE 10-124.2.DWG
SCALE AS NOTED
L�7
C
SHEET
FIGURE 10-124.2

HDR Engineering, Inc. of the Carolinas
N.C.B.E.L.S. License Number: F-0116
440 S. Church Street, Suite 900
Charlotte, NC 28202-2075
704.338.6700
ISSUE DATE DESCRIPTION
PROJECT MANAGER CHAD HEARN, PE
DRAWN BY:
-
DESIGNED BY:
-
CHECKED BY:
-
APPROVED BY:
-
PROJECT NUMBER
000000000246409
NOT FOR
CONSTRUCTION
DUKE ENERGY CAROLINAS,LLC
>, DUKE
ENERGY..
CATAWBA COUNTY
MARSHALL STEAM STATION
COMPREHENSIVE SITE
ASSESSMENT
NORTH CAROLINA
CROSS SECTION C-Cl
GROUNDWATER ANALYTICAL RESULTS
0 1" 2° FILENAME I FIGURE 10-125.1.DWG
SCALE I AS NOTED
SHEET
FIGURE 10-125.1

HDR Engineering, Inc. of the Carolinas
N.C.B.E.L.S. License Number: F-0116
440 S. Church Street, Suite 900
Charlotte, NC 28202-2075
704.338.6700
ISSUE DATE DESCRIPTION
PROJECT MANAGER CHAD HEARN, PE
DRAWN BY:
-
DESIGNED BY:
-
CHECKED BY:
-
APPROVED BY:
-
PROJECT NUMBER
000000000246409
NOT FOR
CONSTRUCTION
DUKE ENERGY CAROLINAS,LLC
�(` DUKE
ENERGY..
CATAWBA COUNTY
MARSHALL STEAM STATION
COMPREHENSIVE SITE
ASSESSMENT
NORTH CAROLINA
CROSS SECTION C-Cl
GROUNDWATER ANALYTICAL RESULTS
0 1" 2° FILENAME I FIGURE 10-125.2.DWG
SCALE I AS NOTED
SHEET
FIGURE 10-125.2

HDR Engineering, Inc. of the Carolinas
N.C.B.E.L.S. License Number: F-0116
440 S. Church Street, Suite 900
Charlotte, NC 28202-2075
704.338.6700
ISSUE DATE DESCRIPTION
PROJECT MANAGER CHAD HEARN, PE
DRAWN BY:
-
DESIGNED BY:
-
CHECKED BY:
-
APPROVED BY:
-
PROJECT NUMBER
000000000246409
NOT FOR
CONSTRUCTION
DUKE ENERGY CAROLINAS,LLC
�(` DUKE
ENERGY..
CATAWBA COUNTY
MARSHALL STEAM STATION
COMPREHENSIVE SITE
ASSESSMENT
NORTH CAROLINA
CROSS SECTION C-Cl
GROUNDWATER ANALYTICAL RESULTS
0 1" 2° FILENAME I FIGURE 10-XXX.2.DWG
SCALE I AS NOTED
SHEET
FIGURE 10-125.3

10000000
9000000
8000000
7000000
6000000
5000000
4000000
3000000
2000000
1000000
0
AB-10S
AB-10SL
AB-125
AB-12SL
AB-13S
AB-14S
AB-155
AB-155L
AB-175
AB 185
PW
AB 20S
AB 215
AB 35
AB 45
AB 4SL
AB 55
AB 6S
AB 85
AL 35
■ Calcium
229000
195000
1240000
93800
127000
204000
132000
62300
84900
89400
488000
35600
59100
12300
31100
347000
261000
65700
475000
■ Chloride
7400
7600
3650000
27800
1100
8000
8100
4200
9700
8900
51500
84600
4100
7100
9600
47400
2900
2800
17300
■ Magnesium
52100
65700
708000
32100
16100
168000
45800
18800
28400
20500
432000
44900
12000
3340
5340
78700
52400
25300
252000
■ Nitrogen, NO2 plus NO3
109000
14
570
140
■ Potassium
107000
j 26500 j
18300
j 9180
7690
75100
16600
4740
11800
6540
407000
29400
11300
3320
6180
35900
11700
374000
■ Sodium
87000
60900
30700
2580
6450
88400
19000
8120
29300
5460
264000
13300
7240
6010
13600
7850
16500
11500
242000
■ Sulfate
857000
670000
923000
19600
36100
1180000
114000
33600
183000
9100
3560000
353000
366000
34500
42500
8850000
646000
368000
3162000
NOTE: Blank space in data table above indicates analyte was non -detect. DATE
All Concentrations in micrograms per liter (Ng/L) CATION AND ANION CONCENTRATIONS IN ASH BASIN POREWATER SAMPLES SEPTEMBER 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION FIGURE
10-126
CATAWBA COUNTY. NORTH CAROLINA

1400000
1200000
1000000
800000
600000
400000
200000
0
IL
SW-1
SW-2
SW-3
WS
SW-4
SW-5
■ Calcium
90600
89400
135000
206000
223000
■ Chloride
231000
217000
20300
86400
51900
■ Magnesium
63000
62100
52400
32200
46900
■ Nitrogen, NO2 plus NO3
190
220
■ Potassium
3760
3710
7590
9820
7820
1150000
■ Sodium
8820
8580
42900
694000
5550
■ Sulfate
107000
128000
1210000
NOTE: Blank space in data table above indicates analyte was non -detect. DATE
All Concentrations in micrograms per liter (Ng/L) CATION AND ANION CONCENTRATIONS IN ASH BASIN SURFACE WATER SAMPLES SEPTEMBER 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION FIGURE
10-127.1
CATAWBA COUNTY. NORTH CAROLINA

1HVVVV
120000
100000
80000
60000
40000
20000
0
SW-6
WS
■ Calcium
54500
■ Chloride
81600
23800
3540
27100
129000
■ Magnesium
■ Potassium
■ Sodium
■ Sulfate
NOTE: Blank space in data table above indicates analyte was non -detect. DATE
All Concentrations in micrograms per liter (Ng/L) CATION AND ANION CONCENTRATIONS IN SURFACE WATER SAMPLES COLLECTED OUTSIDE OF THE WASTE BOUNDARY SEPTEMBER 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION FIGURE
10-127.2
CATAWBA COUNTY, NORTH CAROLINA

250000
200000
150000
100000
50000
0
5-2
MSSW0015001
Seep
MSSWO02 5001
■ Calcium
107000
98400
83200
■ Chloride
207000
218000
214000
■ Magnesium
40900
42600
59900
■ Nitrogen, NO2 plus NO3
100
190
3490
■ Potassium
5890
7610
140000
■ Sodium
8020
0 Sulfate
130000
123000
NOTE: Blank space in data table above indicates analyte was non -detect.
All Concentrations in micrograms per liter (Ng/L)
DATE
CATION AND ANION CONCENTRATIONS IN SEEP SAMPLES
SEPTEMBER 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION FIGURE
10-128
CATAWBA COUNTY, NORTH CAROLINA

70000
60000
50000
40000
30000
20000
10000
dL
1315-1 D
13G-15
1315-2 BR
13G-2S 1313-3 D
WG
BG-35
M W-4
M W-4D
■ Calcium
11900
7390
32600
60900
12400
9260
3080
5710
■ Chloride
4800
3500
3400
2700
3500
2700
1900
1200
■ Magnesium
6580
9720
10800
3740
13700
13900
642
1310
■ Nitrogen, NO2 plus NO3
1100
2400
130
250
330
91
12
■ Potassium
4630
9520
9660
12200
6450
■ Sodium
12300
3610
10300
12400
16000
8480
3870
7640
■ Sulfate
11800
1100
8200
9100
16000
11500
1000
NOTE: Blank space in data table above indicates analyte was non -detect. DATE
All Concentrations in micrograms per liter (Ng/L) CATION AND ANION CONCENTRATIONS IN BACKGROUND GROUNDWATER MONITORING WELLS SEPTEMBER 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION FIGURE
10-129
CATAWBA COUNTY. NORTH CAROLINA

300000
250000
200000
150000
100000
50000
0
A13-11)
A13-21)
A13-91)
AL -IS
GWA-1S
WG
MW-10S
MW-14S
MW-7S
OB-1(WLO)
■ Calcium
72000
57800
8050
63700
2920
133
73200
83200
1900
■ Chloride
201000
4500
3000
260000
3000
840
82700
239000
1900
■ Magnesium
18500
17200
7990
43500
737
1030
30500
36400
346
■ Nitrogen, NO2 plus NO3
20
22
66
300
21
130
550
■ Potassium
6910
6070
11400
24500
5320
4240
■ Sodium
21400
14300
9290
11900
9810
24200
223000
6780
153000
■ Sulfate
32000
178000
12900
62200
4000
NOTE: Blank space in data table above indicates analyte was non -detect. DATE
All Concentrations in micrograms per liter (Ng/L) CATION AND ANION CONCENTRATIONS IN DOWNGRADIENT SHALLOW MONITORING WELLS SEPTEMBER 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION FIGURE
10-130
CATAWBA COUNTY. NORTH CAROLINA

450000
400000
350000
300000
250000
200000
150000
100000
50000
0
AB-11)
A13-91)
AL-11)
AL-21)
WG
GWA-11)
MW-10D
MW-14D
■ Calcium
72000
8050
76700
114000
89000
4120
57800
■ Chloride
201000
3000
222000
3500
4500
1300
33700
■ Magnesium
18500
7990
21400
32800
6380
716
17000
■ Nitrogen, NO2
plus NO3
22
27
120
370
97
■ Potassium
6910
11400
32700
8000
48000
5010
■ Sodium
21400
9290
30300
36800
27500
189000
6690
3500
27200
■ Sulfate
32000
12900
17100
386000
207000
NOTE: Blank space in data table above indicates analyte was non -detect. DATE
All Concentrations in micrograms per liter (Ng/L) CATION AND ANION CONCENTRATIONS IN DOWNGRADIENT DEEP MONITORING WELLS SEPTEMBER 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION FIGURE
10-131
CATAWBA COUNTY. NORTH CAROLINA

50000
45000
40000
35000
30000
25000
20000
15000
10000
5000
0
A13-11311
AB-9611 GWA-1611
WG
MW-14BR
■ Calcium
22400
36500
17900
13400
■ Chloride
28700
4300
3500
10800
■ Magnesium
9870
6460
5380
4750
■ Nitrogen, NO2 plus NO3
610
130
■ Potassium
4620
15400
3550
10500
5190
■ Sodium
14800
14600
13500
12900
■ Sulfate
37600
47500
43800
NOTE: Blank space in data table above indicates analyte was non -detect. DATE
All Concentrations in micrograms per liter (Ng/L) CATION AND ANION CONCENTRATIONS IN DOWNGRADIENT BEDROCK MONITORING WELLS SEPTEMBER 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION FIGURE
10-132
CATAWBA COUNTY, NORTH CAROLINA

25000
20000
15000
10000
5000
0-
AB-115
GWA-25
GWA-3S
GWA-45
GWA-55
GWA-65 GWA-7S
WG
GWA-85
MW-115
L
MW-12S
MW-135
_k
MW-4
■ Calcium
1820
4500
4670
5260
4020
3360
10700
6940
2110
474
6620
3080
■ Chloride
1800
940
2200
3700
6600
3100
3600
4300
2600
1000
3800
1900
■ Magnesium
703
3340
1190
1460
2200
712
14800
1650
1230
308
2030
642
■ Nitrogen, NO2 plus NO3
34
17
290
1400
230
120
52
610
22
1500
■ Potassium
3290
2520
4580
5130
■ Sodium
6530
8370
5730
9820
5820
7290
7260
5360
2520
7130
3870
■ Sulfate
1200
22400
1600
6200
540
11300
1600
1650
NOTE: Blank space in data table above indicates analyte was non -detect. DATE
All Concentrations in micrograms per liter (Ng/L) CATION AND ANION CONCENTRATIONS IN UPGRADIENT SHALLOW MONITORING WELLS SEPTEMBER 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION FIGURE
10-133
CATAWBA COUNTY, NORTH CAROLINA

200000
180000
160000
140000
120000
100000
80000
60000
40000
20000
0
GWA-21)
GWA-3D
GWA-4D
GWA-5D
GWA-61)
GWA-7D
WG
GWA-8D
MW-11D
MW-12D
MW-13D
MW-4D
■ Calcium
175000
83800
25600
3090
78500
8960
7820
3460
3540
7410
5710
■ Chloride
9100
3600
5200
1900
7000
3200
3600
2000
800
4300
1200
■ Magnesium
79.4
3590
858
605
12000
1920
1520
1080
2240
1310
■ Nitrogen, NO2
plus NO3
14
160
120
640
110
250
260
290
1700
12
■ Potassium
5960
10400
3670
27600
6920
2930
2580
■ Sodium
88800
16400
21900
5150
17700
6400
9550
6210
5990
7360
7640
■ Sulfate
70700
11800
24200
4000
57100
9200
2000
1200
4000
760
1000
NOTE: Blank space in data table above indicates analyte was non -detect. DATE
All Concentrations in micrograms per liter (Ng/L) CATION AND ANION CONCENTRATIONS IN UPGRADIENT DEEP MONITORING WELLS SEPTEMBER 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION FIGURE
10-134
CATAWBA COUNTY, NORTH CAROLINA

25000
20000
15000
10000
5000
0
GWA-9BR
WG
20200
4500
3010
1800
3800
7630
4900
■ Calcium
■ Chloride
■ Magnesium
■ Nitrogen, NO2 plus NO3
■ Potassium
■ Sodium
■ Sulfate
NOTE: Blank space in data table above indicates analyte was non -detect. DATE
All Concentrations in micrograms per liter (Ng/L) CATION AND ANION CONCENTRATIONS IN UPGRADIENT BEDROCK MONITORING WELLS SEPTEMBER 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION FIGURE
10-135
CATAWBA COUNTY, NORTH CAROLINA

25000
20000
15000
10000
5000
0
.1
L
L
[k
AB-11S
AB-16S
A13-9S
GWA-1S
GWA-2S
—.
GWA-3S GWA-4S
WG
GWA-5S
GWA-6S
GWA-7S
GWA-8S
MW-4
■ Calcium
1820
11300
3960
2920
4500
4670
5260
4020
3360
10700
6940
3080
■ Chloride
1800
2900
2400
3000
940
2200
3700
6600
3100
3600
4300
1900
■ Magnesium
703
12700
4430
737
3340
1190
1460
2200
712
14800
1650
642
■ Nitrogen, NO2 plus NO3
34
630
300
17
290
1400
230
120
52
■ Potassium
3290
2520
4580
5130
■ Sodium
6530
3860
3170
9810
1 8370
5730
9820
5820
7290
7260
3870
■ Sulfate
1200
4300
4600
4000
22400
1600
6200
540
11300
1600
NOTE: Blank space in data table above indicates analyte was non -detect.
All Concentrations in micrograms per liter (Ng/L)
CATION AND ANION CONCENTRATIONS IN SHALLOW MONITORING WELLS (SHEET 1 OF 2)
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION
DATE
SEPTEMBER 2015
FIGURE
10-136
CATAWBA COUNTY, NORTH CAROLINA

1200000
1000000
800000
600000
400000
200000
0
AL-15
AL-25
13G-15
BG-2S
BG-35
MW-105 MW-11S
WG
MW-12S
MW-135
MW-14S
MW-75
OB-1(WLO)
■ Calcium
63700
240000
7390
60900
9260
133
2110
474
6620
73200
83200
1900
■ Chloride
260000
1400
3500
2700
2700
840
2600
1000
3800
82700
239000
1900
■ Magnesium
43500
71600
9720
3740
13900
1030
1230
308
2030
30500
36400
346
■ Nitrogen, NO2 plus NO3
66
1400
2400
250
91
21
610
22
1500
130
550
■ Potassium
24500
8610
9660
6450
5320
4240
■ Sodium
11900
62000
3610
12400
8480
5360
2520
7130
24200
6780
■ Sulfate
62200
979000
1100
9100
11500
650
223000
153000
NOTE: Blank space in data table above indicates analyte was non -detect. DATE
All Concentrations in micrograms per liter (Ng/L) CATION AND ANION CONCENTRATIONS IN SHALLOW MONITORING WELLS (SHEET 2 OF 2) SEPTEMBER 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION FIGURE
10-137
CATAWBA COUNTY. NORTH CAROLINA

500000
450000
400000
350000
300000
250000
200000
150000
100000
50000
0
AB-10D AB-11D AB-11S AB-12D AB-13D AB-14D AB-15D AB-16D AB-17D AB-18D AB-11) AB-20D AB-21D AB-21) A13-3D
WG
■ Calcium
73000
15700
1820
270000
43500
12400
56300
35200
23200
16400
72000
23300
21400
57800
37800
■ Chloride
5100
4200
1800
464000
3400
1800
3400
5200
2400
3300
201000
1900
4800
4500
4500
■ Magnesium
15700
4580
703
11400
8420
3750
7150
9530
3060
3540
18500
2380
12000
17200
16700
■ Nitrogen, NO2 plus NO3
180
34
51
57
29
20
■ Potassium
6180
3290
8040
18900
2930
5500
7710
10300
3360
6910
6740
4000
6070
7160
■ Sodium
10400
12200
6530
106000
12200
9860
9370
18000
9900
10700
21400
15600
11100
14300
19200
■ Sulfate
11000
7600
1200
219000
26800
22800
28400
61900
13600
6000
32000
16300
8300
178000
90000
NOTE: Blank space in data table above indicates analyte was non -detect.
All Concentrations in micrograms per liter (Ng/L)
CATION AND ANION CONCENTRATIONS IN DEEP MONITORING WELLS (SHEET 1 OF 2)
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION
CATAWBA COUNTY. NORTH CAROLINA
A13-41) I AB-51) I A13-61) I AB-7D I A13-81) I AB-91)
11600
26600
68500
34600
57700
8050
8200
4400
4300
7300
3100
3000
5920
11400
8850
4230
5450
7990
22
4130
6920
7610
27200
5200
11400
9930
21100
13000
40000
15000
9290
33300
18800
36800
43700
124000
12900
DATE
SEPTEMBER 2015
FIGURE
10-138

450000
400000
350000
300000
250000
200000
150000
100000
50000
L
—jib,
0-
AL-1D
AL-2D
AL-31)
AL-41)
13G-1D
BG-3D
GWA-11)
GWA-21)
GWA-31)
GWA-41) GWA-5D
WG
GWA-61)
GWA-71)
GWA-81)
MW-101)
MW-11D
MW-12D
MW-13D
MW-14D
MW-4D
■ Calcium
76700
114000
112000
73800
11900
12400
89000
175000
83800
25600
3090
78500
8960
7820
4120
3460
3540
7410
57800
5710
■ Chloride
222000
3500
2300
1900
4800
3500
4500
9100
3600
5200
1900
7000
3200
3600
1300
2000
800
4300
33700
1200
■ Magnesium
21400
32800
31900
30600
6580
13700
6380
79.4
3590
858
605
12000
1920
716
1520
1080
2240
17000
1310
■ Nitrogen, NO2
plus NO3
27
120
18
360
1100
330
14
160
120
640
110
250
260
370
290
1700
97
12
■ Potassium
32700
8000
8210
7520
4630
12200 j
48000
j 5960
10400
3670
27600
6920
2930
2580
5010
■ Sodium
30300
36800
27500
26000
12300
16000
27500
88800
16400
21900
5150
17700
6400
9550
6690
6210
5990
7360
27200
7640
0 Sulfate
17100
386000
402000
1 308000
11800
16000
189000
70700
11800
24200
4000
57100
9200
2000
3500
1200
4000
760
207000
1000
NOTE: Blank space in data table above indicates analyte was non -detect. DATE
All Concentrations in micrograms per liter (Ng/L) CATION AND ANION CONCENTRATIONS IN DEEP MONITORING WELLS (SHEET 2 OF 2) SEPTEMBER 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION FIGURE
10-139
CATAWBA COUNTY. NORTH CAROLINA

200000
180000
160000
140000
120000
100000
80000
60000
40000
20000
0
AB-15BR
A13-1611
A13-51311
A13-613R
A13-91311 AL-2611
WG
BG-2BR
GWA-1611
GWA-9611
MW-14BR
■ Calcium
62100
22400
40400
34900
36500
55900
32600
17900
20200
13400
■ Chloride
4200
28700
5100
12100
4300
2500
3400
3500
4500
10800
■ Magnesium
6850
9870
14300
755
6460
13200
10800
5380
3010
4750
■ Nitrogen, NO2
plus NO3
10
210
130
610
1800
130
■ Potassium
4490
4620
7740
8420
15400
24600
9520
3550
3800
5190
■ Sodium
10900
14800
30500
39500
14600
23000
10300
10500
7630
13500
■ Sulfate
61900
37600
86400
98600
47500
176000
8200
43800
4900
12900
NOTE: Blank space in data table above indicates analyte was non -detect. DATE
All Concentrations in micrograms per liter (Ng/L) CATION AND ANION CONCENTRATIONS IN BEDROCK MONITORING WELLS SEPTEMBER 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION FIGURE
10-140
CATAWBA COUNTY, NORTH CAROLINA

4.5
4
3.5
3
2.5
2
1.5
1
0.5
0
AB-10S AB-10SL AB-125 AB-12SL AB-13S AB-145 AB-15S AB-15SL AB-175 AB-18S AB-20S AB-21S A13-3S AB-4S AB-4SL AB-5S A13-85 AL-3S
PW
■Total
0.01 0.01 3.95 1.42 0.03 0.01 0.07 0.13 0.05 1 0.98 0.01 0.24 0.01 0.21 0.23 0.01 0.01 0.01
NOTE: Blank space in data table above indicates analyte was non -detect.
DATE
SULFATE:CHLORIDE RATIO IN ASH BASIN POREWATER SAMPLES
SEPTEMBER 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION FIGURE
10-141
CATAWBA COUNTY, NORTH CAROLINA

2.5
2
1.5
0.5
0
SW-1 SW-2 SW-3 SW-4 SW-5
■ Total I 2.16 1.7
NOTE: Blank space in data table above indicates analyte was non -detect.
WS
0.03
0.07 0.05
DATE
SULFATE:CHLORIDE RATIO IN ASH BASIN SURFACE WATER SAMPLES SEPTEMBER 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION FIGURE
10-142.1
CATAWBA COUNTY, NORTH CAROLINA

0.7
0.6
0.5
0.4
0.3
0.2
0.1
■ Tota 1
SW-6
WS
0.63
NOTE: Blank space in data table above indicates analyte was non -detect. DATE
SULFATE:CHLORIDE RATIO IN SURFACE WATER SAMPLE COLLECTED OUTSIDE OF THE WASTE BOUNDARY SEPTEMBER 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION FIGURE
10-142.2
CATAWBA COUNTY. NORTH CAROLINA

1.8
1.75
1.7
1.65
1.6
1.55
1.5
1.45
S-2 MSSW001 5001 MSSW002 5001
f Seep
■ Tota 1
I 1.59 1.56 1.74
NOTE: Blank space in data table above indicates analyte was non -detect.
DATE
SULFATE:CHLORIDE RATIO IN SEEP SAMPLES
SEPTEMBER 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION FIGURE
10-143
CATAWBA COUNTY, NORTH CAROLINA

3.5
3
2.5
2
1.5
1
0.5
0
BG-1D 1313-1S BG-2BR BG-25 BG-3D BG-3S MW-4D
WG
■ Total
0.41 3.18 0.41 0.3 0.22 0.23 1.2
NOTE: Blank space in data table above indicates analyte was non -detect. DATE
SULFATE:CHLORIDE RATIO IN BACKGROUND GROUNDWATER MONITORING WELLS SEPTEMBER 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION FIGURE
10-144
CATAWBA COUNTY, NORTH CAROLINA

7
6
5
4
3
2
1
0
■ Tota I
A13-1D A13-21) A13-9D AL-1S GWA-1S MW-145 MW-7S
WG
6.28 0.03 0.23 4.18
NOTE: Blank space in data table above indicates analyte was non -detect.
0.75 0.37 1.56
SULFATE:CHLORIDE RATIO IN DOWNGRADIENT SHALLOW MONITORING WELLS
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION
CATAWBA COUNTY, NORTH CAROLINA
DATE
SEPTEMBER 2015
FIGURE
10-145

14
12
10
8
6
4
2
0
AB-1D A13-9D AL-11) AL-21) GWA-11) MW-10D MW-14D
WG
■ Tota I
6.28 0.23 12.98 0.01 0.02 0.37 0.16
NOTE: Blank space in data table above indicates analyte was non -detect. DATE
SULFATE:CHLORIDE RATIO IN DOWNGRADIENT DEEP MONITORING WELLS SEPTEMBER 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION FIGURE
10-146
CATAWBA COUNTY, NORTH CAROLINA

0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
A13-1611 A13-96R GWA-11311 MW-14BR
WG
■ Total
0.76 0.09 1 0.08 0.84
NOTE: Blank space in data table above indicates analyte was non -detect. DATE
SULFATE:CHLORIDE RATIO IN DOWNGRADIENT BEDROCK MONITORING WELLS SEPTEMBER 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION FIGURE
10-147
CATAWBA COUNTY, NORTH CAROLINA

7
6
5
4
3
2
1
0
AB-11S GWA-25 GWA-3S GWA-5S GWA-65 GWA-7S GWA-8S MW-12S
WG
■Total
1.5 0.04 1.38 1.06 1 5.74 0.32 2.69 1.54
NOTE: Blank space in data table above indicates analyte was non -detect. DATE
SULFATE:CHLORIDE RATIO IN UPGRADIENT SHALLOW MONITORING WELLS SEPTEMBER 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION FIGURE
10-148
CATAWBA COUNTY, NORTH CAROLINA

6
5
4
3
2
1
0
GWA-21) GWA-3D GWA-41) GWA-51) GWA-6D GWA-71) GWA-8D MW-11D MW-12D MW-13D MW 4D
WG
■ Tota I
0.13 0.31 0.21 0.48 0.12 0.35 1.8 1.67 0.2 5.66 1.2
NOTE: Blank space in data table above indicates analyte was non -detect. DATE
SULFATE:CHLORIDE RATIO IN UPGRADIENT DEEP MONITORING WELLS SEPTEMBER 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION FIGURE
10-149
CATAWBA COUNTY, NORTH CAROLINA

I
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
GWA-9BR
WG
■ Tota I
0.92
NOTE: Blank space in data table above indicates analyte was non -detect. DATE
SULFATE:CHLORIDE RATIO IN UPGRADIENT BEDROCK MONITORING WELLS SEPTEMBER 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION FIGURE
10-150
CATAWBA COUNTY, NORTH CAROLINA

7
6
5
4
3
2
1
0
AB-11S AB-16S A13-9S GWA-1S GWA-2S GWA-3S GWA-55 GWA-6S GWA-7S GWA-8S
WG
■ Total
1.5 0.67 0.52 0.75 0.04 1.38 1.06 5.74 0.32 2.69
NOTE: Blank space in data table above indicates analyte was non -detect.
DATE
SULFATE: CHLORIDE RATIO IN SHALLOW MONITORING WELLS (SHEET 1 OF 2) SEPTEMBER 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION FIGURE
10-151
CATAWBA COUNTY, NORTH CAROLINA

4.5
4
3.5
3
2.5
2
1.5
1
0.5
0
■ Tota I
AL-1S AL-2S BG-15 BG-2S BG-3S M W-12S M W-145 M W-75
WG
4.18 0 3.18 0.3 0.23 1.54 0.37 1.56
NOTE: Blank space in data table above indicates analyte was non -detect. DATE
SULFATE:CHLORIDE RATIO IN SHALLOW MONITORING WELLS (SHEET 2 OF 2) SEPTEMBER 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION FIGURE
10-152
CATAWBA COUNTY, NORTH CAROLINA

7
6
5
4
3
2
1
0
A13-10D AB-11D AB-115 AB-12D AB-13D AB-14D AB-15D AB-16D AB-17D AB-18D AB-11) AB-20D AB-21D A13-2D AB-31) A13-41) A13-51) A13-61) A13-71) A13-8D A13-91)
WG
0Tota1
0.46 0.55 1.5 2.12 0.13 0.08 0.12 0.08 0.18 0.55 6.28 0.12 0.58 0.03 0.05 0.25 0.23 0.12 0.17 0.03 0.23
NOTE: Blank space in data table above indicates analyte was non -detect. DATE
SULFATE:CHLORIDE RATIO IN DEEP MONITORING WELLS (SHEET 1 OF 2) SEPTEMBER 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION FIGURE
10-153
CATAWBA COUNTY, NORTH CAROLINA

14
12
10
8
6
4
2
0
AL-1D AL-2D AL-3D AL-4D BG 1D BG 3D GWA-ID GWA-2D GWA-31) GWA-41) I GWA-51) GWA-6D GWA-7D GWA-8D MW-101) MW-11D MW-12D MW-13D MW-14D MW-4D
WG
■Total
12.98 0.01 0.01 0.01 0.41 0.22 0.02 0.13 0.31 0.21 0.48 0.12 0.35 1.8 0.37 1.67 0.2 5.66 0.16 1.2
NOTE: Blank space in data table above indicates analyte was non -detect. DATE
SULFATE:CHLORIDE RATIO IN DEEP MONITORING WELLS (SHEET 2 OF 2) SEPTEMBER 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION FIGURE
10-154
CATAWBA COUNTY, NORTH CAROLINA

I
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
AB-15BR A13-113R A13-56R A13-61311 A13-91311 AL-213R BG-2BR GWA-1611 GWA-9611 MW-14BR
WG
■ Tota I
0.07 0.76 0.06 0.12 0.09 1 0.01 0.41 0.08 0.92 0.84
NOTE: Blank space in data table above indicates analyte was non -detect.
DATE
SULFATE:CHLORIDE RATIO IN BEDROCK MONITORING WELLS
SEPTEMBER 2015
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION FIGURE
10-155
CATAWBA COUNTY, NORTH CAROLINA

'00
®
Ash Basin Porewater
w-
AB-12S
Ash Basin Water
oo SW-2
roo
Background Monitoring Wells
2��J
AB-8
n
y
..
AB-20S
AB-14s
G
3k
oti
00
AB-6S
AL-3S
roo �7
411
.
AB-10SL
N
G
AB-10S
AB-4S
QO
AB-21S.
p0
oaa
U�
AB-17S
d
0
AB-12SL
N
AB-15S
AB-4SL
B-13S
AB-15 L
O A,
BG-1S
O
�o `PO 00 "o
0
Calcium
CATIONS
0
o ryo 10 00 00 00
Chloride+Nitrogen, NO2 plus NO3
ANIONS
NOTE: Nitrate plus Nitrite was reported by the laboratory and is used here. Equivalent weight of 54 used (average of nitrate and nitrite).
DATE
PIPER DIAGRAM - ASH BASIN POREWATER, WATER, AND
BACKGROUND MONITORING WELLS SEPTEMBER 2015
DUKE ENERGY CAROLINAS, LLC FIGURE
MARSHALL STEAM STATION ASH BASIN
CATAWBA COUNTY, NORTH CAROLINA 10-156

moo
Msswo02
<>
Ash Basin Porewater
AB-12S
❑
Ash Basin Water
�m
sw-1
sswool
% SW-2
40
❑
Seeps
AB
n
q
•,
AB-20S
AB-14s
G
3k
Oti
00
AB-5S
AL-3S r00
�7
�?
.
AB-10SL
N
G
AB-10S
AB-4S
QO
AB-215.
PO
oaa,
U�
AB-17S
a
O
AB-12SL
O
N
AB-15S
AB-4SL
B-13S
AB-15 L
O �
O
�o `PO 00 "o
0
Calcium
CATIONS
O ryo 10 10 DO o0
0
Chloride+Nitrogen, NO2 plus NO3
ANIONS
NOTE: Nitrate plus Nitrite was reported by the laboratory and is used here. Equivalent weight of 54 used (average of nitrate and nitrite).
DATE
PIPER DIAGRAM - ASH BASIN POREWATER, WATER, AND SEEPS SEPTEMBER 2015
1111111N)l MARSHALL STEAM STATION ASH BASIN
DUKE ENERGY CAROLINAS, LLC FIGURE
10-157
CATAWBA COUNTY, NORTH CAROLINA

moo
♦
Ash Basin Porewater
AB-1zs
,gym
�
Ash Basin Water
sw-1
x�
Co SW-2 O
Surface Water
. AB-fiS
N�
q
AB-20S
AB-14s
G
3k
Oti
00
41?
AB-6S sw-6 L-3s
.
AB-10SL
11
G
AB-10S
AB-4S
QO
AB-21S
PO
oaa
U�
AB-17S
a
O
AB-12SL
O
N
AB-15S
AB-4SL
B-13S
AB-15 L
O �
O
�o `PO 00 "o
0
Calcium
CATIONS
O ryo 10 10 DO o0
0
Chloride+Nitrogen, NO2 plus NO3
ANIONS
NOTE: Nitrate plus Nitrite was reported by the laboratory and is used here. Equivalent weight of 54 used (average of nitrate and nitrite).
DATE
PIPER DIAGRAM - ASH BASIN POREWATER, WATER, AND SURFACE WATER SEPTEMBER 2015
1111111N)l MARSHALL STEAM STATION ASH BASIN
DUKE ENERGY CAROLINAS, LLC FIGURE
10-158
CATAWBA COUNTY, NORTH CAROLINA

C
Co
CA
2�
J�
ti
C
�O 00
q,
AB-6S
AB-10SL
11
�O
%
AB-21:
�o
oar
CIS AB-2S
AB-17
a AB-12SL
0
�00
.IT
zS 0 Ash Basin Porewater
-1S 0 Ash Basin Water
e 0 Downgradient "S" Wells
MW-14S pl
i
'0S �3
07
AL-3S �4
AB-10S 3
PO
�O CO 00 ro To O O ry0 1O 00 00
O
Calcium Chloride+Nitrogen, NO2 plus NO3
CATIONS ANIONS
NOTE: Nitrate plus Nitrite was reported by the laboratory and is used here. Equivalent weight of 54 used (average of nitrate and nitrite).
DATE
PIPER DIAGRAM - ASH BASIN POREWATER, WATER, DOWNGRADIENT "S" SEPTEMBER 2015
GROUNDWATER MONITORING WELLS
DUKE ENERGY CAROLINAS, LLC FIGURE
MARSHALL STEAM STATION ASH BASIN
CATAWBA COUNTY, NORTH CAROLINA 10-159

,00
Ash Basin Porewater
AB-12S
�
0
Ash Basin Water
��
sw-
`0P SW-2
IR
0
Downgradient "D" Wells
�p0
AB-8
AB -ID AB-20S
C'
J�
AB-14S
Q
G
Dry
AB-
3k
-0
�
o
O
�7
4?
AB-6S
AL-3S
AB-10SL
M -14D
0'4
Gi
AB-21S
AB-10S
QO
AB-4S
AL-1D"
p0
oaf
U�
AB-17S
?
0
AB-12S
O
N
AB-15S
AB-4SL
B-13S
GWA-1 D
AB-15 L
O �
O
100
MW-10D
�� 100
S
AB-20-20S
\
S
O
ti
/
AB-10-10S
80
VOo AB-14S 80
d�
AB-2D
C AB-10SL
AB-6S
lP
p,_-,. Gy
C�h
60 AB-215
xF' AB-4S 60
GWA-1D
SW-2 AB-14S.
G3
AB-21S
.
c AB-17S
AB-20S
00
AB-12SL
AB-15S�
40
AB 12S
AB-8S AB-10SL
AL-3S
AB-4SL 40
,
AB-15SL
AB-18S
AB-17S
MW-14D
00
AB-15S
AB-15SL SW-2
20
� AL-1D
MW-10D SW-1 2O
AB-13S
AB-4S
AB 10S,
AB-13S
AB 12SL �� AB-12S
AB-6S AB-4SL AB-2D
AB-18S
AB- D
MW-100�
AB-1D 'GWA-1D
00
0
�O
o
CPO
00 "o
To
O O
ry0 1O 00 00 00
�
Calcium
Chloride+Nitrogen, NO2 plus NO3
CATIONS
ANIONS
NOTE: Nitrate plus Nitrite was reported by the laboratory and is used here. Equivalent weight of 54 used (average of nitrate and nitrite).
DATE
PIPER DIAGRAM - ASH BASIN POREWATER, WATER, DOWNGRADIENT "D" SEPTEMBER 2015
GROUNDWATER MONITORING WELLS
DUKE ENERGY CAROLINAS, LLC FIGURE
MARSHALL STEAM STATION ASH BASIN

,00
+lam
C
�0o A
J� AB-1
ti
q-,
:O 60 AB-6S
� AB-10SL
ko
oar 'o --
`Jo
0
�O Co 00 "o ao 0
0
Calcium
CATIONS
2S 0 Ash Basin Porewater
O Ash Basin Water
00
<> Downgradient "BR" Wells
n
AB-20S
c3
x
AL-3S'
9
AB-10S s4
AB-4S �i
ao
0
o ryo 10 00 00 00
Chloride+Nitrogen, NO2 plus NO3
ANIONS
NOTE: Nitrate plus Nitrite was reported by the laboratory and is used here. Equivalent weight of 54 used (average of nitrate and nitrite).
DATE
PIPER DIAGRAM - ASH BASIN POREWATER, WATER, DOWNGRADIENT "BR" SEPTEMBER 2015
GROUNDWATER MONITORING WELLS
DUKE ENERGY CAROLINAS, LLC FIGURE
MARSHALL STEAM STATION ASH BASIN
10-161
CATAWBA COUNTY, NORTH CAROLINA

,00
C
x� m00%
moo' / `A
J� AB-1
ti
�0 rno AB-6s
q-c'
�O
oar �o
U�
`Jo
0
I2S 0 Ash Basin Porewater
0 Ash Basin Water
0 Upgradient "S" Wells
3-20S
c3
x
3s �o
AB-10s s4
AB-4S
ao
0
�O CO CO p0 X�O 0
O
Calcium
CATIONS
Chloride+Nitrogen, NO2 plus NO3
ANIONS
NOTE: Nitrate plus Nitrite was reported by the laboratory and is used here. Equivalent weight of 54 used (average of nitrate and nitrite).
DATE
PIPER DIAGRAM - ASH BASIN POREWATER, WATER, UPGRADIENT "S" SEPTEMBER 2015
GROUNDWATER MONITORING WELLS
DUKE ENERGY CAROLINAS, LLC FIGURE
MARSHALL STEAM STATION ASH BASIN
CATAWBA COUNTY, NORTH CAROLINA 10-162

moo
0
Ash Basin Porewater
�
AB-12S
0
Ash Basin Water
Jm sw-
`
D; �sw-z
o
o
v
0
Up9 radient "D" Wells
AB-8S
AB-20S
J� AB-14S
�
G
3x
ory610
AB-6S
�
o
0C
AL-3S
4G
AB-10SL
AB-10S
G
Gi
AB-4S
Q� AB-21S
p0
oaa
U�
AB-17S
a
AB-12SL
N
AB-15S AB-4SL
B-13S
B-15r�
o -
o
0
�o wo 'Po ro �o 0
0
Calcium
CATIONS
Chloride+Nitrogen, NO2 plus NO3
ANIONS
NOTE: Nitrate plus Nitrite was reported by the laboratory and is used here. Equivalent weight of 54 used (average of nitrate and nitrite).
DATE
PIPER DIAGRAM - ASH BASIN POREWATER, WATER, UPGRADIENT "D" SEPTEMBER 2015
GROUNDWATER MONITORING WELLS
DUKE ENERGY CAROLINAS, LLC FIGURE
MARSHALL STEAM STATION ASH BASIN 10-163
CATAWBA COUNTY, NORTH CAROLINA

moo
Ash Basin Porewater
AB-12S
�
0
Ash Basin Water
jm
sw-
D;
`�o sw-z
vo
Up9 radient "BR" Wells
AB-8S
AB-20S
J�
AB-14S
�
G
3x
ory
rno
AB-6S
�
o
0C
AL-3S
9G
AB-10SL
AB-10S
G
Gi
AB-4S
QO
AB-21S
p0
oaa
U�
�AB-17S
a
O
AB-12SL
N
AB-15S
AB-4SL
i
.B-13S
i
AB-15 L
O
/
o
0
�O CPO 00 "o `'o 0
0
Calcium
CATIONS
Chloride+Nitrogen, NO2 plus NO3
ANIONS
NOTE: Nitrate plus Nitrite was reported by the laboratory and is used here. Equivalent weight of 54 used (average of nitrate and nitrite).
DATE
PIPER DIAGRAM - ASH BASIN POREWATER, WATER, UPGRADIENT "BR" SEPTEMBER 2015
GROUNDWATER MONITORING WELLS
DUKE ENERGY CAROLINAS, LLC FIGURE
MARSHALL STEAM STATION ASH BASIN 10-164
CATAWBA COUNTY, NORTH CAROLINA

�00
Ash Basin Porewater
AB-12S
AL-2S
Ash Basin Water
J SW-1 MW-14S
po SW-2 ro�
All "D" Wells
AB-20S
B-14S
Q A
G�jk
OR, AB-6S AL-3S
00
O� AB-10SL
AB-10S
G3
QO AB-21SXAB-4S
p0
oaf
CIS ABA / \
, AM -IN L
O AB-1 L AB-4SL
AB-15S
D
9- 3S B-9S\A / O BG-1S / p
0
�O 00 00 p0 a0 0
O
Calcium
CATIONS
ANIONS
NOTE: Nitrate plus Nitrite was reported by the laboratory and is used here. Equivalent weight of 54 used (average of nitrate and nitrite).
DATE
PIPER DIAGRAM - ASH BASIN POREWATER, WATER, AND ALL "D" SEPTEMBER 2015
GROUNDWATER MONITORING WELLS
DUKE ENERGY CAROLINAS, LLC FIGURE
MARSHALL STEAM STATION ASH BASIN 10-165
CATAWBA COUNTY. NORTH CAROLINA

.100
Ash Basin Porewater
AB-12S
�m
Ash Basin Water
\m sw-,
AB -ID
Cp sw-z
^� 0/
o
�
0
All "D" Wells
AL
�O AL 3D8S
MW-14D
d
AB-20S
Q AB-14S
G�jk
AB-6S
AL-3S
OR,
00
C. AB-2D
B-12D
07
Oq, AB-10SL AL-21D
AL-1D
AB-10S
G3
AB-81D
AB
AB-21S.
Q0
po
oaa
U�
AB-17S
AB-3D
AB-12SL
0
AB-1 L AB-4SL
AB-15S AB-16
AB-61D
WA-6 D GWA-
B-13S
- 5`
AB- 3D
0 A,
AB-11
O
0
ANIUNS
NOTE: Nitrate plus Nitrite was reported by the laboratory and is used here. Equivalent weight of 54 used (average of nitrate and nitrite).
DATE
PIPER DIAGRAM - ASH BASIN POREWATER, WATER, AND ALL "D" SEPTEMBER 2015
GROUNDWATER MONITORING WELLS
DUKE ENERGY CAROLINAS, LLC FIGURE
MARSHALL STEAM STATION ASH BASIN 10-166
CATAWBA COUNTY. NORTH CAROLINA

�00
Ash Basin Porewater
AB-12SI
�m
Ash Basin Water
\m SW-,
po SW-2 ro�
All "BR" Wells
AB-20S
Q AB-14S
G�jk
AB-6S AL-3S
OR,
00 00
Oq, AB-10SL
G3
AB-10S
AB-21 S. AB-4S
AL-2BR
p0
U� AB-17S
-15BR GWA-1BR
TO,
NO
AB-4SL
AB-12SL
- BR
9- 3S AB-15S
AB-5BR
AB- L
O
O
0
�o `Po 110"o `'0 0
0
Calcium
CATIONS
ANIONS
NOTE: Nitrate plus Nitrite was reported by the laboratory and is used here. Equivalent weight of 54 used (average of nitrate and nitrite).
DATE
PIPER DIAGRAM - ASH BASIN POREWATER, WATER, AND ALL "BR" SEPTEMBER 2015
GROUNDWATER MONITORING WELLS
DUKE ENERGY CAROLINAS, LLC FIGURE
MARSHALL STEAM STATION ASH BASIN 10-167
CATAWBA COUNTY. NORTH CAROLINA

mm
e6
um[WILI�
sP 4e/yPS
ss
m 051U-i5
ml lw/UP$
Nml lw/p
�[�
Sgp[d
o.mo
.�mmuAFg1fie
1.
6f9om
orwcmr.etl mLs
.Waw[W/y
Ell
11130
�J
iEd"
01
WOVAES
tmaav
m
=167
o
w
DRISO m.76000
..
cundkilgait W/u
rr
w.[iwnius
mm�ee
m
e
6Mnumt W/yP
S3Am
fes
une rye/y
W/L)kNomss
nple4600
eYSvNs w
M
moo
I
us
mL W,Uumkmm
Call" Z'110
J J J J J
JI
J
yV J
JJ J J
a
JIX
J J J
JI J
9
JJ
All 0&1
m.n)w
LEGEND:
J
0
J
� w.lu�
J J J
J
Le
�lnmy
J J J
uawo„
.� .
wl W/U
o;mo
NIw/LIPS
SAw
rbe/Usi
s>pro
Analyte
Abbreviation
Boron
B
Calcium
Ca
Chloride
CI-
DETECTION MONITORING CONSTITUENTS DETECTED IN SHALLOW WELLS (S)
500 0 500 1.on0 DUKE ENERGY CAROLINAS, LLC W
S) F) T MARSHALL STEAM STATION ASH BASIN
1 a-168
J JW J

Sample Name AB-17D Sample Name AL4D sample Name AL-2D sample Name AL-3D
Constituent (pg/L) � ,
Constituent (p9/1.)
Constituent (pg/L) Constituent (pg/L)
Boron Boron 4,000 ,
Calcium 23,200 Boron 15,200 6,500 Calcium 112,000
Calcium 73,800 Oakum 114,000
Chloride 2,400 Sample Name MW4D Chbrde 2,300 /►�
Chloride 3,500 '# ✓p-
Sulfate 13,600 Chloride 1,900 Constituent (pg/L) Sulfate 402,000
Sulfate 308,000 Sulfate 386,000 Sample Name BG-1D
Total Dissolved Solids 124,000 Calcium 5,710 Total Dissolved Solids 692,000
Total Dissolved Sows 582,000 Chloride 1,200 Total Dissolved Solids 761,000 Sample Name I A13-11D Constituent (pg/L)
Constituent (pg/L) Calcium 11,900
Sample Name AB-16D Sulfate 1000 ] Sample Name GWA-8D Boron B2( Chloride 4,800
Move
e GWA4D Constituent (pg/L) Total Dissolved Solids 82,000 J+ Boron Constituent (pg/L) 421 Calcium 15,70Sulfate 11,800 41
Constituent (pg/L) Calcium 35,200 0
Calcium 25,600 Chloride 5,200 Calcium 7,820 Chortle 4,200 Total Dissolved Solids 142,000
Chloride 5,200 Sulfate 61,900 Chloride 3,600 Sulfate 7,600
Sulfate 24,200 SampleName ARAM Sulfate 2,000 Total Dissolved Solids 116,000
Constituent (pg/L) Total Dissolved Solids 247,000
Total Dissolved Solids 176,000 Total DssoNed Soids 101,000
Calcium 16,400
Chloride 3,300 Sample Name BG-3D
Sulfate 6,000 Constituent(pg/L)
Total Dissolved Solids 132,000 �O"'--"_I�'�C�"ff"7"�"t"-� Boron I 26 J+
( lu,l rlty Sample Name GWA-SD Calcium 12,400
�� '� Constituent W." Chloride 3,500
Calcium 3,090 Sulfate 16,000
Chloride 1,900 Total Dissolved Solids 183,000
Sulfate 4,000
Sample Name AB-15D Total Dissolved Solids 69,000 J+
- - Constituent (p9/L)
Sample Name GWA-3D Boron 53 o Sample Name GWA-6D
Constituent (p9/L)
Constituent (pg/L) ! I Calcium 56,300 Calcium 78,500
Calcium 83,800 Chloride 3,400 _
Chloride 3,600 Sulfate 28,400 Chloride 7,00
Sulfate 11,800 Total Dissolved Solids 272,000 Sulfate 57,100
Total DssoNed Solids 260,000 Total DisoNed Solids 229,000
1
Sample Name AB-13D
Constituent (p9/L)
Calcium 43,500
Chloride 3,400
yh.
Sample Name AB-20D Sulfate 26,800
Constituent (p9/L)
Total DssoNed Sofds 231,000
Calcium 23,300`
Chloride 1,900 Q
Sulfate 16,300 _ Sample Name -
iJ Constituent (pg/L)/L)
Total DssoNed Solids 119,000
Boron 3,500
d Oakum 270,000
Sample frame MW-13D Chloride 464,000
Constituent (p9/L) Sulfate 219,000
Calcium 7,410 Total D6soNed Solids 1,530,000
Chloride 4,300
Sulfate 7603 Sample Name GWA-7D
Total Dissolved Solids 90,000 - Sample Name AB-lOD (p9/L)
- ` Constituent (p9/L) Constituent
s" Boron 1,200 Boron 45 J
a D- Calcium 8,960
Oakum 73,000
,Cloride 3,200
Sample NChloride 5100
Name AB-1 Suhlfate 9,200
Constituent (pg/L) \ - Sulfate 11,000
Boron 130 Total DssoNed Solos 148,000
Total Dissolved Solids 334,000
Calcium 12,400 ` Sample Name MW-14D
Chloride 1,800 Constituent (p9/L)
Sulfate 22,800 Boron 2,600
Total Dissolved Solids 114,000 Calcium 57,800
Chloride 33,700
Sulfate 207,000
- .�"' Total DssoNed Solids 427,000
- � Sample Name AB-9D
Constituent (p9/L)
Calcium 8,050
Chloride 3,000
SampleName MW-12D
Constituent (pg/L) / Sulfate ,00
lids 143
Calcium 3,540 Total Dissolved So,000
Chloride 600 J
Sulfate 4,000 Sample Name AL -ID
Total Dissolved Solids 72,OD0 Constituent (pg/L)
Boron 1,300
Calcium 76,700
Chloride Z22,000
Sample Name AB-7D Sulfate 17,300
Constituent (p9/L) -. ., Total Dissolved Solids 744A00
Calcium 3,30U _ 'rVill�
Chloride 7,3007 - -
Sulfate 43,700
Total DissoNed SafdS 274,000 _
Sample Name AB-6D
Constituent (pg/l.)
Boron 5,500
Oakum 68,500 .
Chloride 4,300 ♦ '-a-
Sulfate 36,800 = ♦ - ` �
- Total Dissolved Solids 361,000 f ,�/ - `. •.
_,�s,, • , /Lit
s Lv-
4¢ � a SampleName MW-11D
Constituent (p9/L)
Calcium 3,460
Chloride 2,000 J) J J J J J J
Sulfate Total Dissolved Solids 79,0000 LAKE NORMAN y J
4- sample Name AB-1D Y•� J J J J J
Constituent (pg/L) � J J J
Boron 380
JDC J J J
Calcium 7z,000 Jl J
Chbrde 201,000 ]+
sulfate 3z,00D J g J J
sample Name AB-8D Total Dissolved Solids 541,000
Constituent(pg/L)
Calcium 57,700
Chloride 3,100
LEGEND:
Sulfate 124,000
Total Dissolved Solids 322,000 r �D�� sample Name MW-lOD
D /A Mnrgp D Constituent (p9/L) J
LS'1.111JL�AJ- 'I1L1- S _ Calcium 4,120 J
Chloride 1,300
Sample me AB4D Sulfate 3,500 -
Constituent(pg/L)... Total Dissolved Softls 75,000 ro rFx.:. J
Boron 380
Oakum 11,600
Chloride 8,200 J J J
Sulfate 33,300
Total Dissolved Solids 156,000 Sample Name AB-21D
Constituent (p9/L) J J J
Calcium 21,900 J J J
Chloride 4,800
Suffa[e 8,300 J
Total DssoNed Solids 186,000
Sample Name AB-2D J J J
Sample Name AB-5D Constituent (pg/L)
Constituent (pg/L)
Boron 34 ] Calcium 57,800
Calcium 26,600 Chbrde 4,500
Chloride 4,400 Sulfate 178,000
Sulfate 18,800 Total Dissolved Sofds 365,000
Total Dissolved Solids 240,000
Sample Name AB-3D
Constituent (pg/L)
Boron 170
R,.. 2t'�'fYY><- ' Chloride 4,500
yf ^t �e� �,� - Sulfate 90,000
Total Dissolved Solds 290,000
Sample Name GWA-2D �f - a_:-.-�-, - .
Constituent (p9/L) --� - �, � Sample Name GWA-1D
Calcium 175,000 1,� y: - - p Co L)
�•Y,` Chbritle 9,100 ]- �4 `" `-' - / s1 Calcium n g/89,000
Constituent (p
Sulfate 70,700 Chloride 4,500
`% - Total DssoNed Solids 650,000 * Sulfate 189,000
^� Total Dissolved Solids 492,000
500 0 500 1,000
S) T
DETECTION MONITORING CONSTITUENTS DETECTED IN DEEP WELLS (D)
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
J JW J
Analyte
10
Abbreviation
Boron
B
Calcium
Ca
Chloride
CI -
pH (field)
pH
Sulfate
SO4
Total Dissolved Solids
TDS
10-169

r i
�} T
4
:r
�f Y:
f
4
Is
I
1 A
�
P�
#
I
F
1`
1
{f
a
t
rr
Y
f
.y
s'It-
r�
Q
V
t-� tP'
k•
4 P t
,
0�
a F,. f,
r
9
2
I Q'
L -y
xtis,
A
y
0�
tl
L - t
Y
u•J Y
m 62,100
Je 4,200
e 61,900
Dissolved Solids 290,000
n
Constituent (pg/L)
Calcium 20,200
Chloride 4,500
Sulfate 4,900
Total Dissolved Solids 116,000
6
STR�U'CTU�L
FILL
Sample Name) AL-2BR
Constituent (pg/L)
2,100
on 55,900
de 2,500 J
e 176,000
I Sample Name AB-6BR
Constituent (il
Boron 93
Calcium 34,900
Chloride 12,100
• T7
b t
F
5
° Y
f
cy ,
sx 4
w.
n
f
INDUSTRI L
L NDFILL #1
s .a
SBESTOS
NDFILL
! 1� £ l IC
# f
r rah
y Ff a d"e f.. t t
Y
4.
s
f +f
.'n Y aG-4�. d Vf, aY,,..
' - e i/ "7.
y 1 P
z v r?L
f , �4 i • !8
a1'
r: J, 4
� r
F r.
`f Y
N
II r r e ° x f. y �p < �,.,1.,' - ql rE• _ • 'v /?� . F' c. X.'St
�t v �S a.
t
-
4
_ t
d�"rP -
.T
tf
"Mr `
rf ry `
.x
7 M
a .
no. lit, P4
n.
- - .:� P. K.. x. �, 1':i` .♦ ,.< -Is,' ♦L.„ ^�.K°'.
• -,is *'
:, ` �:4 r r 1 k{g S 'r Z - 'n4r.4.. < tl i'• .}� r. `? _ i}� a, .f /4,'r r ir��A, {r
AIV
s,f+.� .
�- f:i I .� q �t.• -r c y '/ Y:`, i F t'.
a h
Y 1 . _°} ar,.+,.` et �„ �' " ib �a' G'r !g ff'L' ✓ bp,dr �i yr'x !
", I 1 .. ` v '& - ',< f s., y`a ■, �•S'(.Y.o is' xR,�r� ..'y,•
ysi 1� `Y SAf4� -.'9"
r" '�+ y+# ''raJFY' �'�1}+ F"i�W •L`:s 4t�, i
1+; ; I ,�,. ; _.Y• rk:i�, !, a.�.R �,.•�'.. s i=,, r� y a •leak° r°^: is
J" c 6.", t�*� ��_ 1� ''^✓°r �. k +�4''
To
C W Sample Name BG 2BR
V
• ^ - i I
1f�(�
Constituent (pg/L)-
'.� 1 1 k i r ' Calcium 32,600
)p t1 ; Chloride 3,400 .Y @ ; i-`' k v i4 a '. A ♦ -9�
Sulfate 8,200 - 'S rt1 /:Q .- �. � if f %�9' #r'w•�~K,'�(` ,mow. P
Total Dissolved Solids 369,000 r y f� - 1 ,�."' ✓ fc J)F ri si ^'^ "�,A�� ,ems.
h.L S d•
.. - .� � �'.' ;^ ' t. / - �� -�I ��t ����.. tsf �,��r. t�x+ `•�• * _
P'>
Y
Is,Is t r.�` :a11
f.):•.'r„nrsa>
r r It
It
�ta/k. .. � ..
Is lio
ol
f ".
is
Ibis
r may. •5 l
dF g A r 4 t , 4• [ _:,
e } ,f e � "'� .•. { �Y YA,`A �j �. •Y
t rE' -' y � w ,�' ♦ vl�'b � -
Ise g�
/ .,+per
Is
R.
/� ll�l�l�jjj jj -I.r• _ + + J
L�1,-tl1UL/1Y111 Y ti • r • t-"" -
.� a F �'e •' Yyt .� T -.
a
Y
r Sample Name MW-14BR ` r �.
r
Constituent (pg/L)
Boron 29 J
r
�l4
Q 1V
SUMate 98,600 `
1- 'Total Dissolved Solids 281,000
' 0
i
..,.. .
r -*
te
Sample Name AB-SBR )"• 1
Constituent (pg/L) sill`
Calcium 40,400 •ti, i� i
Chloride 5,100-
c
Sufate 66,400
Total Dissolved Solids 352.000
cr
f. v
k r1
500 0 500 1,000
SJ T
t � ,
Dissolved Solids 1 141,000
Sample Name AB-9BR
Constituent (pg/L)
Calcium 36,500;
Chloride 4,300
Su Mate 97,500 -
.I
r
Sample Name A13SBR r
��II��•• Constituent (pg/L)
Boron 120 y,
Calcium22,400
Chloride 28,700 ,-
Suter- 37, 600
.Total Dissolved Solids 190,000
1
y.,
`
AP)
•
1.9
,e Ps
Irr
a a_:
PI
ti m
Y_•
� ` `'..
1 1
Constituent (il
or 17,900
de 3,500
e 43,800
d
LALd& tAvi 'e
Analyte
Abbreviation
Boron
B
Calcium
Chloride
Ca
CI -
pH (field)
pH
Sulfate
SO4
Total Dissolved Solids
TDS
JJ J J J J J J
Jl J
py J J J J J
a J J J
S( J J J
Jl J
Jg JJ
LEGEND:
J J
J J J
J J J
J J J
J
J J J
DETECTION MONITORING CONSTITUENTS DETECTED IN BEDROCK WELLS (BR)
10
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
10-170
J JW J

' vv pig' '

ASSESSMENT MONITORING CONSTITUENTS DETECTED IN DEEP WELLS (D)
506 500 1.000 F�� w
DUKE ENERGY CAROLINAS, LLC
y T MARSHALL STEAM STATION ASH BASIN
la-nz
J JW J

N
D ♦ e t ��'� r. '
Sample Name AL-2BR
e
Constituent (Pg/L)
Antimony 0.310.
Arsenic 0.7
Badum 180
Chromium 17.5
Cobalt 0.15 3
Lead 0.051 ] •' „wr" F+ - -
1p
Molybdenum 34.8 [4 ., a,. '. i:., ;.N��i - F.'�e .[.,. ...4 '-y X, `w g
Selenium 29 _ 2 a"Y :'.y', J .e • e..� . F is is :
Thafum 0.047
Ul\JLiiiU
Sample Namel GWA-9BR -'4 .i' " ,� A'c ! f t ' F T%as' 3 J.k t)•r'"L
Constituent (pg/L) a
Antimony 0.38J
- g, y..(,, •v Y ,b' - Sample Name BG-2BR
Arsenic 0.23 Sample Name AB-SSBR �" 'i'," Il /\Mfr,U Barium 2lyti
211f1 fl Constituent (Pg/L)
3 Constituent (pg/L) - L'�.=.1LNL�lYIJ
Chromium 2.5 Antimony 0.16 J '- • Arsenic 7,5
Lead 0.11 Arsenic 0.43J R_ 'w `„ _,^ �' ¢, •_', °" r Barium 580
�ryllium 080 4J
Molybdenum 1.3 Barium 130 �liF 1 `�{„- � s-.
-_ Chromium 13 /! 1ti+n> ! N rom
:,.J -. __ _ Ffi r r?ii' Cobaltium 11.9
Mercury 0.12 ]+ /' '� P - �, v • a
t` Molybdenum 1.2 r - �! T♦ ";+� t , r Lead 17.5
d y
-' �_ .'S! � ° •{ • 'v!'' � Ty SF� kx MoNbdenum 2.SJ
.. , r L'lrzllsJL�Lrlll y � �
v
77 ' �,r �I=1/';�f1 Y - Sample Name AB-9BR
c�.J ll ��-`V'Inl1nlJh�:,_LS'SIP _ Constituent (pg/L)
MLL Antimony 0.3 ]
A enic 0.9
Badum 95
Chromium 4.4
Molybdenum 11.2 - - ^ ^ -- • , -
a _ Selenium 0.481 -�a -
Ir ThaOium 0,033 J
l
•, '+� +� l _ - Sample Name MW-14BR
�`°' (pg/L)
- • r Antimony 0.22 J
's Arsenic 0.27 J
Barium 23
:L <
„ _ - _.• �. Cobalt 0.243
------ Lead 0.23+
II
Molybdenum 2.8
..... w .3
Sample Name A8-6BR � - n 7, .•- ,
Selenium 1
Constituent (Pg/L)
Antimony 1.3 _ _ - p�•
Arsenic 6.6 - f •, ;Y ,„ - -
Barium 51 •�yx - - C
Chromum
-. ..
MoNbdenum 13.6
Selenium 2.7
G � h
_.,. .,. r` JJ J J J J J J
.M' J J J J J
JA J J J
J.V J J J
ii t `� L]'�,.1@JIJl1tJ Sample Name AB-1BR J
r
^,t - Arsenic 0.33 J.:� J g J J
� Barium Zl
Chromium 0.51
Cobalt 0.46 J ik'
Lead 0.3 ` LEGEND:
Molybdenum 0.86 _
Sample Name AB5BR
Constituent (Pg/L)
Antimony 0.19 J _
Arsenic 1.7 _ f _ * _-. J
h #
Barium 300 J J
J J
Chromium 2 ..� � + '. , '� � 1
Cobalt 7.9 •' „' i Ad J
Lead 0.058 ]+ r ✓` ss`_; a .. ?r'.;YIF` !',• -
MoNbdenum 2
Selenum 0.51 J J J
N
Sample Name GWA-IBR
Constituent (pg/L) (L
Antimony 0,161
Arsenic 0.313
Barium 36
Chromium 3.6
t Cobalt 1.7
Lead 0.33
mt Molybdenum 3.7
+^'� �'5 Selenium 0.431
rT. y
500 0 500 1,000
SJ T
Analyte
Abbreviation
Antimony
Sb
Arsenic
As
Barium
Ba
Be
ASSESSMENT MONITORING CONSTITUENTS DETECTED IN BEDROCK WELLS (BR)
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION ASH BASIN
10-173
J JW J

SOURCE
PRIMARY
RELEASE
MECHANISM
PRIMARY
AFFECTED
n ACr%IA
EXPOSURE
ROUTE
Surface Soil "" Dermal
De
Coal Ash Infiltration Inhalation
Basin
Subsurface Soil Incidental Ingestion
Dermal
Particulate Inhalation
Sediment Dermal
Precipitation & Dissolution
NPDES Incidental Ing
Discharge Surface Water Dermal
Groundwater Incidental/Potable I
Dermal
Inhalation
Note:
Exposure pathways are based on the current understanding of the Site and are subject to change.
F)l
HUMAN HEALTH
CONCEPTUAL SITE MODEL
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION
CATAWBA COUNTY, NORTH CAROLINA
n
PRIMARY
RECEPTOR
a�
>Y
C
N O
Y -6
O
U N
C N
U O O I`
rX
X X X
X X X
X X X
X
X
X
X
X
X X X
X X X
X X
X X
X X
Legend:
ePotentially Complete Exposure Pathway
Incomplete or Insignificant Pathway
DATE
SEPTEMBER 2015
FIGURE
12-1

PRIMARY PRIMARY
RELEASE AFFECTED
SOURCE MECHANISM MEDIA
EXPOSURE EXPOSURE
MEDIA ROUTE
PRIMARY RECEPTOR
Aquatic/Riparian
Terrestrial
N
m
m
m
s
m R
FL
m
m
>
p
Q
rn
7
(n
L
S
—
w
w w
772
�p
0
0
o7
0 0
U
N
U
O
O
O
.�
N
�
O
O O
.- .E
7
7
U
-�
d
-
Q
Cn
Q
E=
0
I°'
2
0 U
Coal
Ash Infiltration
Soil I
Soil
Incidental Ingestion I
I I X1X1
X X X X
Basin
(Upland and Riparian)
Vegetation
I Dermal or Root Absorption
IngestionF
X X
�l
X X
Terrestrial
Invertebrates
Ingestion
X X
Small Mammals
Ingestion
X X
and Birds
Aquatic/Riparian
Plants
Ingestion
X X
Benthic and
Aquatic Invertebrates
Ingestion
X
SediRPrecipitation
Sediment
Incidental Ingestion
X X X
Dermal or Root Absorption
solutionNPDES
Surface
Surface Water
Ingestion or Gill Uptake X
X X
X
Discharge
Springs/Seeps
Dermal or Root Absorption
Groundwater
Fish
Ingestion
X X
Note:
Exposure pathways are based on the current understanding of the Site and are subject to change.
F)l
ECOLOGICAL
CONCEPTUAL SITE MODEL
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION
CATAWBA COUNTY, NORTH CAROLINA
Legend:
ePotentially Complete Exposure Pathway
Incomplete or Insignificant Pathway
DATE
SEPTEMBER 2015
FIGURE
12-2