Isoconcentration Maps with CCR Data

L }
L
J44
.I
ROXBO
ND
COOLING WATER
INTAKE BASIN
O PLANT
va-'I�
GYPSUM
-SRAGE
TO AREA
2-101D� ABMW-5D
ND ND
CCR-100D .
�. ND
LCID LANDFILL .
INDUSTRIAL LANDFILL -. 0
�I
� - s
• r _ _ _ J DUNNAWAYRD
kjw
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e ♦ f `. ,� ND
e �
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ND
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r., R, MW-18D,�k
• _ ND
^Imp .• °�
e
g4 '
e.
t"I'l
It/
i
41
GRAPHIC SCALE
0 362.5 725 1,450 2,175 2,900
synTerra
Feet
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE
DUKE
I m,COM
E N E RGY
DRAWN BY:, ROBERTS DATE: 02/19/2018
EADY
CHOJECT CK D BYNAGC.EERRDY.
LEGEND
10TOTAL ANTIMONY CONCENTRATION (fag/L)
ND NOT DETECTED ABOVE REPORTING LIMIT
NS NOT SAMPLED
HIGHEST CONCENTRATION AREA CONTOUR
IMAC CONTOUR
INTERMEDIATE CONTOUR
APPROX. BACKGROUND CONTOUR
BACKGROUND MONITORING WELL
DOWNGRADIENT MONITORING WELL
SIDEGRADIENT MONITORING WELL
UPGRADIENT MONITORING WELL
WATER SUPPLY WELL
LANDFILL AREA
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
DUKE ENERGY ROXBORO SITE
BOUNDARY
STREAM
NOTES:
THE INTERIM MAXIMUM ALLOWABLE CONCENTRATION (IMAC) FOR ANTIMONY IS 1 Ng/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS SET AT REPORTING LIMIT OF 1 Ng/L.
DASHED ISOCONCENTRATION CONTOURS WHERE INFERRED.
NS = NOT SAMPLED
VALUE CONSIDERED AN ANOMALY
t CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC BTV BUT WITHIN THE
BACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGIC SETTINGS.
DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENT MIGRATION
PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THE ASH BASIN.
DATA MAY INCLUDE LAB -QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLE
NOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALID SAMPLE
RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) OR RESULTS THAT
INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEEN REMOVED FROM
DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROM MARCH 2O15 TO
JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27, 2017.
AERAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE
COORDINATE SYSTEM RIPS 3200 (NAD83/2011).
FIGURE 11-1
ISOCONCENTRATION MAP
ANTIMONY IN TRANSITION ZONE GROUNDWATER
ROXBORO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
SEMORA, NORTH CAROLINA

"
lift
"
• I • RO 1 '
♦
• ND
" •, ; , f W-2BR GPMW-3BR MW 2$, D
�a'1BR
` .. N
`♦• i '+ ND MW-3B�R-,DSBR
GPMLEGEND
t cc
IL ' Np D 10TOTAL ANTIMONY CONCENTRATION (fag/L)
♦ .�+ I _. •• MW-29BR ..
• ��' �,. •' 7 -" '-` = - - - -''' - - - - , : GPMW-1BR ,.r _ ND CCR-112BR-BG ND NOT DETECTED ABOVE REPORTING LIMIT
♦ ♦r �� CCR-102BR oY ND MW-22BR CCR-106BR • NS ND NOT SAMPLED
��♦ •� y CCRNDOOBR t ND CCR-103BR r •GMW-10 Np ND MW-30BR
e ND ND CW-1 +ty I RO-16 HIGHEST CONCENTRATION AREA CONTOUR
♦ �..� CCR-101 BR I _ ` ND t ND • ND `
CCR-202BR ND GMW-11 CCR'107BR IMAC CONTOUR
-` • .� ,�'' ND CCR-104BR ND MW-1BR ND ® RO-1012
INTERMEDIATE CONTOUR
♦ BMW 6BR MW-11BR ABMW-7BR
R-203BR ND ND ND ND ND CCR-108BR •-,.,
+= ND%, "'- r.w. ABMW-7BRL CCR-109BR ND . ND APPROX. BACKGROUND CONTOUR
y�. MW-5BR ABMW-4BR ND MW-23BRR MW-20BRL
CCR-204BR ND ND ti ND RO2014-RAW
ND '- CVV2D ND ® ND Np RO-1005 BACKGROUND MONITORING WELL
ABMW-6BR
MW-9BR
ND INDUSTRIAL LANDFILL ND DOWNGRADIENT MONITORING WELL
- ,...
-
ND Lr+ r. ND CCR-110BR ' • _ RO-1017
. I N LCID LANDFILL GMW-7 —. -
ND ND MW-24BR RO 4 - - + ND � SIDEGRADIENT MONITORING WELL
ABMW-3BRL ABM -3BCCR 200BR R,l ND ND RO-1015 UPGRADIENT MONITORING WELL
CCR-111BR -
CCR-205BR ND N MW-2BR } + a' p ND ND
ND ABMW-1BR ND sl., l - GMW-8 MW-25BR
MW-8BR r GMW-9 -.. ° ND `'' Ro-1o11 ..: WATER SUPPLY WELL
ND :`� ND CCR-201BR r+ ND ;w a ND M N1pBR d+. ND LAN DFILLAREA
MW-12BR ND
it + ffs i a+
ND CCR-207BR
�♦ FCC-206BR %- ,� yn RO-13
`�.. ND ND y�, F ri RO-7 '' ND ASH BASIN WASTE BOUNDARY
• .� •. s ,.''�-�: MW-13BR'.-.,' ND
ASH BASIN COMPLIANCE BOUNDARY
v MW-33BR CCR-208BR ABMW-2BR A el ND
'_ ND e° — -
`) e.. • • ND ND ND y MW-16BR - ' - - RO-1016 RO-1013 DUKE ENERGY ROXBORO SITE
�• ` - r . - CCR-212BR V ND -DNNAwaYRo MW-19BRL RO.B RO-1010 �� ND ND
7 �.
::. -:_, - ND ND ND ��� �..�... BOUNDARY
♦ • hAW-7BR CCR-209BR N�. _ 4®M10BR
'�"-/�.. RO-1018 # �• STREAM
' • ND ND CCRND13BR +#�. FRO-2 •� - ti s RO-15
MW-32BR ND
ND ♦„ ND • �' ND NOTES:
�� CCft-210BR CCR-214BR . ' / Lr RO-3 •'1 - THE INTERIM MAXIMUM ALLOWABLE CONCENTRATION (IMAC) FOR ANTIMONY IS 1 Ng/L.
�•� r� ND CCR-211BR ND CCR-215BR ND F R0-12
1� ND CVV-3D ND RO-11 • ND PROVISIONAL BACKGROUND THRESHOLD VALUE IS SET AT REPORTING LIMIT OF 1 Ng/L.
• • f `� , ND CCR
B-216BR ND RO-1010A DASHED ISOCONCENTRATION CONTOURS WHERE INFERRED.
/ G-1 BRLR
L'♦ 214 ND MW-26BR� +F-•;,�,,, ND NS = NOT SAMPLED
• �• �, CCR-217BR ND `�',^."•. • e
• " MW-31BR Np • ' VALUE CONSIDERED AN ANOMALY
b• RO-10-1 ND r - CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC BTV BUT WITHIN THE
B
BACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGIC SETTINGS.
ND MW-4BR R020�6-RAW DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENT MIGRATION
BG-1 BR ND PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THE ASH BASIN.
1.07
R02040-RND srgrFH�rSND • MW 1 R��7 CCR-218BR �� �� RO-1024 RO-10255 DATA
FOINCLU R QUALIFIER ABDEFINITIONS. RESULTS. REFER TO ANALYTICAL DATA TABLE
3FM0 ND i' ND � `� . r - ND 9 g CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALID SAMPLE
R02040-RAW �Rp • - RESULTS FOR EACH WELL DATA WITH HIGH TURBIDITY (>10 NTU) OR RESULTS THAT
ND MW-18BR� • • r Y INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEEN REMOVED FROM
DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROM MARCH 2O15 TO
RO-1004 ° _ _ ND I RO-1000 JULY 2017.
RO-10-2 d - ND •� `I ND
_ ND ♦e - R02031-RAW - • RO-1026 PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27, 2017.
ND
I� e • O-1001
AERAL WAS COLLECTED ON JUNE 13, 2016.
R
9 +n.
-z •= • : - F NORTH CAROLINA STATE PLANE
•, _, DRAWING HAS BEEN SET WITH A PROJECTION O
COORDINATE SYSTEM FIPS 3200 (NAD83/2011).
RO-1003
s
RO-1027
ND
ND
FIGURE 11-2
GRAPHIC SCALE
0 362.5 725 1,450 2,175 2,900
ISOCONCENTRATION MAP
_
-
synTerra
Feet
ANTIMONY IN BEDROCK GROUNDWATER
GREENVILE,SOUTH CAROLI A29601
ROXBORO STEAM ELECTRIC PLANT
DUKE
PHONE[phone]
wwws nterracor .cor,
DUKE ENERGY PROGRESS LLC
r
ENERGY
DRAWN BY 1. ROBERTS DATE:02/20/2018
EADY
SEMORA, NORTH CAROLINA
a ♦° _
R
oonno-
CPROJECT HECKED BYNC EADY

0
i
♦ f
■
. Sygr�H`yY
s�
♦ -•.�
• L•
-
GPMW-3D ♦ •
• � 153Q •
GPMW-2D -
ND
GPMW-1D
981
GPMW-7S MW-22D
1590 m, 458 es
2420 --- - + _ r
D ggMW-5D . s-
MW-6D ND 2580
ND CCR-101
CW-2 MW-5D - 252
CW-5
NMD 747
CCR-100D
CC R-203D N D
3gg LCID L
`rr
CCR-202D
2890
,lion o '`
70Q INDUSTRIAL LANDFILL
LEGEND
10TOTAL BORON CONCENTRATION (fag/L)
ND NOT DETECTED ABOVE REPORTING LIMIT
NS NOT SAMPLED
HIGHEST CONCENTRATION AREA CONTOUR
NORTH CAROLINA2L CONTOUR
INTERMEDIATE CONTOUR
APPROX. BACKGROUND CONTOUR
BACKGROUND MONITORING WELL
¢' DOWNGRADIENT MONITORING WELL
SIDEGRADIENT MONITORING WELL
UPGRADIENT MONITORING WELL
WATER SUPPLY WELL
LANDFILL AREA
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
DUKE ENERGY ROXBORO SITE
BOUNDARY
—4- STREAM
4
■ J
NOTES:
' ..
THE NORTH CAROLINA 2L FOR BORON IS 700 Ng/L.
CW-3:
PROVISIONAL BACKGROUND THRESHOLD VALUE IS SET AT REPORTING LIMIT OF 50 Ng/L.
NO
DASHED ISOCONCENTRATION CONTOURS WHERE INFERRED.
NS = NOT SAMPLED
VALUE CONSIDERED AN ANOMALY
• .. CW-4
_ _ ,�...
t CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC BTV BUT WITHIN THE
ND -
BACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGIC SETTINGS.
• •
•"
DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENT MIGRATION
PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THE ASH BASIN.
` _
♦
/.:,y.
-
PdW-15D
/■■ • • -
DATA MAY INCLUDE LAB -QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLE NOTES
SFMOR4 ND + +
• •
FOR QUALIFIER DEFINITIONS.
RD `
MUM1I-18D
1 .♦ -
y
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALID SAMPLE
RESULTS FOR EACH WELLDATAWITH HIGH TURBIDITY(>10 NTU) OR RESULTS THAT
♦
ND
• • ■��
-„
INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEEN REMOVED FROM
i_ - • _ +
■ -
DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROM MARCH 2O15 TO
■
�:-
JULY2017.
'��'.♦a.
'- t.�
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
■ ' ar,■
�.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27, 2017.
♦
•
—
AERAL WAS COLLECTED ON JUNE 13, 2016.
-
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE
■��
♦
COORDINATE SYSTEM FIPS 3200 (NAD83/2011).
a
■
I
■
■
wk,
GRAPHIC SCALE
HIC
FIGURE 11-3
0 375 750 2,250 3,000
-
ISOCONCENTRATION MAP
• �,
Feet
BORON IN TRANSITION ZONE GROUNDWATER
`*
synTerra
148RIVERTREET.SUITE220
S
_
GREENVILLE, SOUTH CAROLINA 29601
ROXBORO STEAM ELECTRIC PLANT
�' DUKE
PHONE[phone]
DUKE ENERGY PROGRESS LLC
�' ENERGY
www.s nterracor .com
err.co
DRAWNBY:1.ROBERTS DATE:03/15/2015
PROJECT MANAGER: C. EADY
�
SEMORA, NORTH CAROLINA
,4 ►
CHECKED BY: C. EADY
. . '
PROGRESS
­n �an�F�nTn,a
� ., �n Q.—I--- �l KA—,a a 1IKITI .m

i
7R_20�4BR�
R 2870
C'
MW-9BR� - '-
ND
I
CCR-205BR
- MW-8BR _ 3280
pp, I . i I ND
GPMW-1BR
1420
CCR-102BR MW-22BR
ND 558
GMW-10
92 ~
•CCR-101BR l - -
ND
R-201BR - ' C -103BR
N D 40
CCR-104BR
:6B3R MW-11BR 6710 AB
D ND
MW-5BR Q� CCR-100BR ABMW-7
ND ND 1430
• ABM W-6BR
ND ABMV
N
M1. LCID LANDFILL
,
I '
. 1
' I �
GPMW-3BR �� •♦/
294 l00000• -
ND MW-3BR _ .-
3000 MW-141
• MW-28BR � ND +
CCR-105BR
570
CCR-106BR
1080 ND
MW-27 MW-1BR ' -. CCR-112BR-BG
ND
�oII
. MW-30BR ND
- CW-1 ND RO-16
ND ® ND
GMW-11 CCR-10813R
AW-7BRL 3380 13000
93 RO-1012
3R CCR-107BR MW-23BRR ; ND
ND
USTRIA 3860 .tt t
CCR-109BR MW-20BRL FRO-1005
-494 ' ND
4BR ND
• �- •MW-24BR �+i FRO-11117
ND RO-1015
CCR-110BR ND RO-4 ND
GMW-7 CCR-111 BR
MW-3BR � MW-2BR .1340 22500 2930 '.MW-17BR ND RO-7
4650 ND _ ' ND 1 , NO RO-1011
L RO-13 NO
BR CCR-200BR G48 08 ♦'�00 ♦. -j ND
ND - MW-25BR R02014-RAW -
r' MW-12BR } GMW-9
' CCR-206BR ND CCR-207BR , ND ND
23400 • -: ♦♦ RO-1018
9160
MW-13BR
M BR� CCR-208BR ABMW-2BR ♦ - ♦ .I ND.A
ND qUI �
52900 ND ♦ 'kMW-16BR 01
UNNAWgygp MW-19BRL
♦, ND RO-8 �o
MW-7BR CCR-209BR CCR-2121 D ♦ ND RO-11 Np-1010
ND ND
ND 4360 p _
MW-32BR� /�� CCR-213BR � BOND • J ` - - • FRO-15
ND ND y�.,r.'.' L ND
CCR-214BR RO-3 RO-1010A Rp_i
CCR-210BR ND ND ND 6.1
2540 CCR-211BR w
♦ +� ,� CR-216BR { t •
2150 CW-3D � C
ND ♦ ND .'� MW-26BR •
BG-1 BRLR CCR-215BR ♦ CCR-217BR 3 ♦ y'� ^ ND
♦� +♦ 374?firSi MW'-3`1BR�,Y { •'.�-�. '
-+ RO-
1025BG-2BR W-4BR CCR.218BR
D NO
nn D N
BG-1BR R02056-RARO-10-1 ND
NO NO
RO-1004 rt
NO -1024
MW-15BRNDRAW R02040
71 F
NO SFND ► ��'.� ,•J. ��i�. .4 -�� -'mil
R02040-RAW
NO RO-10-2 • i ♦ ' MW-18BR�
ND • % ND • ♦t
♦ '• R02031-RAW
RO-1000
a 1• - �� l RO-1001 w
♦�' ON
'. RO-1026 RO-1027
�' ND ND
ND •�
GRAPHIC SCALE
0 375 750 1,500 2,250
t
Feet
148 RIVER STREET- SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
ldF
f*w-
DUKE
ENERGY
IRO-1016
NO
LEGEND
10TOTAL BORON CONCENTRATION (pg/L)
ND NOT DETECTED ABOVE REPORTING LIMIT
NS NOT SAMPLED
HIGHEST CONCENTRATION AREA CONTOUR
NORTH CAROLINA 2L CONTOUR
INTERMEDIATE CONTOUR
APPROX. BACKGROUND CONTOUR
BACKGROUND MONITORING WELL
DOWNGRADIENT MONITORING WELL
SIDEGRADIENT MONITORING WELL
UPGRADIENT MONITORING WELL
O WATER SUPPLY WELL
LANDFILL AREA
ASH BASIN WASTE BOUNDARY
—••—••- ASH BASIN COMPLIANCE BOUNDARY
DUKE ENERGY ROXBORO SITE
��- BOUNDARY
STREAM
NOTES:
THE NORTH CAROLINA 2L FOR BORON IS 700 Ng/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS SET AT REPORTING LIMIT OF 50 Ng/L.
s DASHED ISOCONCENTRATION CONTOURS WHERE INFERRED.
NS = NOT SAMPLED
3,000
DRAWN BY: J. ROBERTS DATE: 03/15/2018
PROJECT MANAGER: C. EADY
CHECKED BY: C. EADY
VALUE CONSIDERED AN ANOMALY
t CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC BTV BUT WITHIN THE
BACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGIC SETTINGS
DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENT MIGRATION
PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THE ASH BASIN.
DATA MAY INCLUDE LAB -QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLE
NOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALID SAMPLE
RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) OR RESULTS THAT
INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEEN REMOVED FROM
DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROM MARCH 2O15 TO
JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27, 2017.
AERAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE
COORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-4
ISOCONCENTRATION MAP
BORON IN BEDROCK GROUNDWATER
ROXBORO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
SEMORA, NORTH CAROLINA

w- NEWS ,r-
♦� e
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P � Vn•
♦ i +
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s
m
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•r�
I
N
r
■ I
i
• t • GPMW-3D '� ■ ';
_9
■
COOLING WATER
INTAKE BASIN STGYPSUM
GPMW-1 D ORAGE
.. ._
.
■
0.03
ROXBORO PLANT
■
■ ■
®
MW-22D
. LCID LANDFILL L61D -
_.. ' GMW-6 ■
ND INDUSTRIAL LANDFILL
0.527 ,.
MW-111
GMW-6
2.28 1.75 ■
M11D
CW-2 „ MN- W- 2.55 i
112 ND CCR 100D ■
ND GM-6 `tl ■
ABMW-5D W
ND I 9t
ND ND
F203D {:, CCR-202D _ ■ f
ii ND
sa • • L"u.
• MW-15D
Se41OR4
RD 1, 3.5 M W-1 E
_ 8.35
mom nk
1 ■.:yS-.
■
t;
■ _ 1
lip �+■
.I
DUKE
ENERGY
GRAPHIC SCALE
0 325 650 1,300 1,950 2,600
Feet
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
DRAWN BY: J. ROBERTS DATE: 03/15/2018
PROJECT MANAGER: C. EADY
CHECKED BY: C. EADY
LEGEND
OTOTAL CHROMIUM CONCENTRATION (fag/L)
ND TOTAL CHROMIUM NOT DETECTED ABOVE
REPORTING LIMIT
OCHROMIUM (VI) CONCENTRATION (fag/L)
CHROMIUM (VI) NOT DETECTED ABOVE
REPORTING LIMIT
HIGHEST CONCENTRATION AREA CONTOUR
NORTH CAROLINA2L CONTOUR
INTERMEDIATE CONTOUR
CHROMIUM CONTOUR
BACKGROUND MONITORING WELL
DOWNGRADIENT MONITORING WELL
SIDEGRADIENT MONITORING WELL
UPGRADIENT MONITORING WELL
WATER SUPPLY WELL
LANDFILL AREA
ASH BASIN BOUNDARY
—••—••■ ASH BASIN COMPLIANCE BOUNDARY
DUKE ENERGY ROXBORO SITE
BOUNDARY
THE NORTH CAROLINA 2L FOR CHROMIUM IS 10 Ng/L.
TRANSITION ZONE BACKGROUND THRESHOLD VALUE FOR TOTAL CHROMIUM IS 26 Ng/L
AND HEXAVALENT (VI) CHROMIUM IS 7 Ng/L.
DASHED ISOCONCENTRATION CONTOURS WHERE INFERRED
NS = NOT SAMPLED
VALUE CONSIDERED AN ANOMALY
t CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC BTV BUT WITHIN THE
BACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGIC SETTINGS.
DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENT MIGRATION
PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THE ASH BASIN.
DATA MAY INCLUDE LAB -QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLE NOTES
FOR QUALIFIER DEFINITIONS
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALID SAMPLE
RESULTS FOR EACH WELL DATA WITH HIGH TURBIDITY (>10 NTU) OR RESULTS THAT
INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEEN REMOVED FROM
DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROM MARCH 2O15 TO JULY
2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27, 2017.
AERAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE
COORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-5
ISOCONCENTRATION MAP
CHROMIUM AND CHROMIUM (VI) IN TRANSITION ZONE
GROUNDWATER
ROXBORO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
SEMORA, NORTH CAROLINA

iJ-
ROXBORO PLANT M`
MW-9BRNJ 1
ND CCR-2
NC
n 7CR-202BR
CCR-204BR ND
ND CCR-203BR
CCR-205BR ND
1.04
APKMA
ND
ND
CCR-101 BR
ND
Me
■
I
■
GPMW-3BR
MND ° ° - MW-14BR �� •
RO-1 • ND • •
ND MW-28BR
GPMW-2BIR �' 2.08 ■■
ND MW-3BR r
ND �♦
MW-27BR i i
CCR-106BR ND MW-29BR
INTAKEbAlINND ND I
CR N1D05R
CCR-103BR MW-1�:• MW-30BR
R04BND
ND R 264C
■ i CCR-1N12DBR-BG
1.35
:CR-102BR _ CW-1 ° ■ RO-16
ND � ■ 1.4
ND ABM Wp-7BR ,�. GMW-11
ND CCR-108BR -
BM-7BRL CCRNp07BR ND MW BRR
ND
W ■ -
ND CCR-109BR
MW -11 B-R ND
ND ABMW-413 -
10 ■ - MW-20BRL
ND ��
CCR-200BR INDUSTRIAL LANDFILL
ND
MW 24BR MW-17BR
4W-3BR LCID LANDFILL
CCR-214BR
ND
7 CCR-215BR
ND
GMW-7 CCR-110BR' ND i ND
ND ND
1tfj,.: �• r
R2O7-4
R.O-.13
CR-111BR 1.3
ND Ok RGM 4.1.5
GM-9 - ♦ - 47 •� •
ND
� �.-• ND _ ♦ M NDBR f«Q`•
•-• ter.
MW-13BR � R.� y9 • � • •
■ ND ♦f g • .
DUNNAWAY RD • - "�
g
16BR MW,19BRL
D i : - MW-10BR ND■ ■ , IRO-11 .._ .
ND 1 1.7 -RO-15
RO-2 RO- .,.._. 1.3
ND RO-3 ND ..R0-12. _ ..
ND ND ,. ■
MW♦ m
0.57 57 •
•.%ON
■
MW-18BR
• i ND
00
■ /fj/jam■•�
■
j. _ 4!.
DUKE
ENERGY
r .
GRAPHIC SCALE
0 325 650 1,300 1,950 2,600
Feet
148 RIVER STREET, SUITE 220
GREENVILLE SOUTH CAROLINA 29601
PHON E 864-421-9999
DRAWN BY: J. ROBERTS DATE: 03/15/2018
PROJECT MANAGER: C. EADY
CHECKED BY: C. EADY
LEGEND
10T0TAL CHROMIUM CONCENTRATION (fag/L)
ND
TOTAL CHROMIUM NOT DETECTED ABOVE
REPORTING LIMIT
OCHROMIUM
(VI) CONCENTRATION (fag/L)
CHROMIUM (VI) NOT DETECTED ABOVE
REPORTING LIMIT
HIGHEST CONCENTRATION AREA CONTOUR
NORTH CAR0LINA2L CONTOUR
INTERMEDIATE CONTOUR
CHROMIUM CONTOUR
BACKGROUND MONITORING WELL
DOWNGRADIENT MONITORING WELL
®
SIDEGRADIENT MONITORING WELL
•
UPGRADIENT MONITORING WELL
O
WATER SUPPLY WELL
LANDFILL AREA
ASH BASIN BOUNDARY
—••—••■
ASH BASIN COMPLIANCE BOUNDARY
DUKE ENERGY ROXBORO SITE
BOUNDARY
THE NORTH CAROLINA
2L FOR CHROMIUM IS 10 Ng/L.
BACKGROUND
THRESHOLD VALUE FOR TOTAL CHROMIUM IS 4 Ng/L AND HEXAVALENT (VI)
CHROMIUM IS 2 Ng/L.
DASHED ISOCONCENTRATION CONTOURS WHERE INFERRED.
CCR WELLSARE NOT SAMPLED FOR HEXAVALENT CHROMIUM
NS = NOT SAMPLED
VALUE CONSIDERED AN ANOMALY
t CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC BTV BUT WITHIN THE
BACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGIC SETTINGS.
DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENT MIGRATION
PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THE ASH BASIN.
DATA MAY INCLUDE LAB -QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLE NOTES
FOR QUALFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALID SAMPLE
RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) OR RESULTS THAT
INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEEN REMOVED FROM
DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROM MARCH 2O15 TO JULY
2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27, 2017.
AERAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE
COORDINATE SYSTEM RIPS 3200 (NAD83/2011).
FIGURE 11-6
ISOCONCENTRATION MAP
CHROMIUM AND CHROMIUM (VI) IN BEDROCK
GROUNDWATER
ROXBORO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
SEMORA, NORTH CAROLINA

1.
'GPMW-1S G 99.69 .
CCR-101D
~ MW-6D 321
ABM
° MW-SD ND
CW-2 ND
ND " - CWD-5 CCR-100D
ND
CCF' 03D '- LCID LANDFILL
14.7 CCR-202D . a
ND
i
r_.
L:
SST AS~ EAB EXTENSION
IMPOUNDMENT
r r f ♦♦ ," N D
Cj 'b• 3G-1
ND CW4
MW-15D . - -
i� D SFgyO�� ND
R,
• _ ND
s
a
�•
•
g •
It/
♦ �/,
•
Ik
^�.._
41
4"
•
GRAPHIC SCALE
0 362.5 725 1,450 2,175 2,900
symTen-a
Feet
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
,,Lft�www.s
DUKE
ENERGY
nterracor .com
DRAWN BY J. ROBERTS
EADY DATE 02/26/2018
C
HOC ED BYNC EADY
LEGEND
10TOTAL COBALT CONCENTRATION (fag/L)
ND NOT DETECTED ABOVE REPORTING LIMIT
NS NOT SAMPLED
HIGHEST CONCENTRATION AREA CONTOUR
IMAC CONTOUR
INTERMEDIATE CONTOUR
APPROX. BACKGROUND CONTOUR
BACKGROUND MONITORING WELL
DOWNGRADIENT MONITORING WELL
SIDEGRADIENT MONITORING WELL
UPGRADIENT MONITORING WELL
WATER SUPPLY WELL
LANDFILL AREA
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
DUKE ENERGY ROXBORO SITE
BOUNDARY
_10- STREAM
NOTES:
THE INTERIM MAXIMUM ALLOWABLE CONCENTRATION (IMAC) FOR COBALT IS 1 Ng/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS SET AT REPORTING LIMIT OF 1 Ng/L
DASHED ISOCONCENTRATION CONTOURS WHERE INFERRED
NS = NOT SAMPLED
VALUE CONSIDERED AN ANOMALY
t CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC BTV BUT WITHIN THE
BACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGIC SETTINGS.
DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENT MIGRATION
PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THE ASH BASIN.
DATA MAY INCLUDE LAB QUALIFIED RESULTS REFER TO ANALYTICAL DATA TABLE NOTES
FOR QUALIFIER DEFINITIONS
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALID SAMPLE
RESULTS FOR EACH WELL DATAWITH HIGH TURBIDITY(>10 NTU) OR RESULTS THAT
INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEEN REMOVED FROM
DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROM MARCH 2O15 TO
JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27, 2017.
AERAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE
COORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-7
ISOCONCENTRATION MAP
COBALT IN TRANSITION ZONE GROUNDWATER
ROXBORO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
SEMORA, NORTH CAROLINA

�■, t' ♦-
a\ ♦1 •
s
..
IN OF
■ • �•. CCR-202BR
♦ • ND
■ �♦ CCR-201BR
CCR-203BR 16.7
■
■ COOLINGWATE.
INTAKE BASIN ■
'd
KBORO PLANT `�y GYPSUM
r' `STORAGEAREA
Ilmolplunin. 6�rsr tJ
i
i
5.4 CW-2D MW-5BR
CCR-204BR ND 2.45
1.02
MW-9BR
ND
'ABMW-3BRL ABMW
CCR-205BR ND 128
MW-8BR ND ABMW-1BR
ND ND
MW-126R
I.
ABMW-7BR I ND II
ND ABMW 7BRL
I-11BR ND CCR-109B
ND e. ND
i
i
I
1
V-3BR •
1.86
MW-14BR
MW-288R 2.25
' ND J
CCR-105BR ■♦
ND
MW-29BR
ND
BR CCR-106BR ■ ■ CCR-112BR-BG
ND MW-30BR ND
CW 1
1.56 ND CCR-107BRr�_M
3 ND
CCR-108B R Ro-1012
ND � ND
�� MW-23BRR
ABMW-6BR ABMW-4BR ND MW-20BRL I NDO-1005
ND . � 1.68 _ .,... ND ■
CCR-110BR ■ Ro-Jon
LCID LANDFILL 30.6 ND
GMW-7 '(� RO-4
M2.92R ND CRND11BR M ND BR I • ND �F'M
CCR-200BR G ND 8� GMW-9 MT'2513 MW�-17BR
ND ND nln •. ^�� Ro-7
1.38 CCR-207BR �yy
♦ ♦� 33.9
, � ■ • �_ CCR-206BR v< '�`
MW-33BR - CCRR ABMW-2BR
f.,,, .• ND t ND
`) 34.5 - MW-16BR
♦^ 'C ♦ - 1 �h :. EE 212B R ND
♦ ♦ ♦ - MW-7BR CCR 209BR ND - -
•`. 1 ND
15.6 CCR-213BR
♦ M7-32BR n'27 ND MW-106R
V _ • '�rC_C
CCR-214BR 19.9
1 CCND CCR-215BR
�•� �, f` R ND -
• 1.15 CCR-216BR
• •�
CW-3D ND MW-26BR
•, BBRLR ND CCR-217BR ND
G-1
♦�� ` < �� ND ND ..
•` - - j °'n. ,.. ,0B%2BR �'•MND BR MW-4BRR02040-RAWBG-1 BRNDo.e2ND CCR-218BR
y RO-10-1 ND
a• ND h'Yy.� MW-158R
R02040-RRD ND .
0.66
Ro-10-2 Ro-looa MW-18BR
N ND ♦ _ ND
♦•
- FRO-1003
*: ♦ ND i` •
s� ■
■
011
♦ RO-1016 � R020
ND
' RO10
Qo ND-
RO-1010 h RO-1018
N D
RO-15
ND
' RO-12 _
■ ND �-
•
RO-1010A
ND ND ND
RO-1025
ND
♦
14-RAW q ,
13 •�,
2.74
♦♦
MW-19BRL
-
■ �� � RO-1024
♦
ND
- RO-1000
AW
ND
ND
RO-1026
• -- RO-1001
ND
■ ND
J
C
RO-1027
♦
ND
■
DUKE
'
ENERGY
t PROGRESS
GRAPHIC SCALE
0 362.5 725 1,450 2,175 2,900
Feet
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHON E 864-421-9999
DRAWN BY: J. ROBERTS DATE: 03/15/2018
PROJECT MANAGER: C. EADY
CHECKED BY: C. EADY
LEGEND
10TOTAL COBALT CONCENTRATION (pg/L)
ND NOT DETECTED ABOVE REPORTING LIMIT
NS NOT SAMPLED
HIGHEST CONCENTRATION AREA CONTOUR
IMAC CONTOUR
INTERMEDIATE CONTOUR
APPROX. BACKGROUND CONTOUR
BACKGROUND MONITORING WELL
DOWNGRADIENT MONITORING WELL
SIDEGRADIENT MONITORING WELL
UPGRADIENT MONITORING WELL
WATER SUPPLY WELL
LANDFILL AREA
ASH BASIN WASTE BOUNDARY
—•• ASH BASIN COMPLIANCE BOUNDARY
DUKE ENERGY ROXBORO SITE
BOUNDARY
STREAM
NOTES:
THE INTERIM MAXIMUM ALLOWABLE CONCENTRATION (IMAC) FOR COBALT IS 1 Ng/L
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 6.4 Ng/L.
DASHED ISOCONCENTRATION CONTOURS WHERE INFERRED
NS = NOT SAMPLED
VALUE CONSIDERED AN ANOMALY
t CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC BTV BUT WITHIN THE
BACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGIC SETTINGS.
DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENT MIGRATION
PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THE ASH BASIN.
DATA MAY INCLUDE LAB -QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLE NOTES
FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALID SAMPLE
RESULTS FOR EACH WELL. DATAWITH HIGH TURBIDITY(>10 NTU) OR RESULTS THAT
INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEEN REMOVED FROM
DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROM MARCH 2O15 TO
JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27, 2017.
AERAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE
COORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-8
ISOCONCENTRATION MAP
COBALT IN BEDROCK GROUNDWATER
ROXBORO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
SEMORA, NORTH CAROLINA

Hyco
• • •`1`i
GPMW-2D,-��.
µ 74100
GPMW
e4 825
GPMW-ID _ GPMW-IS ,v 16 65 ., �i� I MW 22D
' 42
ABM
3020000 GMW-6
CCR-101 D 32
MW-6D NS
13 MW-5D
95 CCR-100D INDUSTRIAL LANDFILL
C 3-2 C N-D Ns
CCR-203D CCR-202D LCID LANDFI
NS NS
r
__•Nm..4 f. aytia.Sl
• a ,� L
• !\ ■POO
ly
■
`� • 1313-1 y 11 CW 4
202
Srgre MW-15D
L 16
tr" a
MW-18D
• 163
■
41
LEGEND
1 ]TOTAL IRON CONCENTRATION (pg/L)
ND NOT DETECTED ABOVE REPORTING LIMIT
HIGHEST CONCENTRATION AREA CONTOUR
NORTH CAROLINA2L CONTOUR
INTERMEDIATE CONTOUR
APPROX. BACKGROUND CONTOUR
BACKGROUND MONITORING WELL
DOWNGRADIENT MONITORING WELL
SIDEGRADIENT MONITORING WELL
UPGRADIENT MONITORING WELL
WATER SUPPLY WELL
LANDFILL AREA
ASH BASIN WASTE BOUNDARY
—■■—■■, ASH BASIN COMPLIANCE BOUNDARY
DUKE ENERGY ROXBORO SITE
BOUNDARY
—4- STREAM
■
" •��- • .J-<`
NOTES:
±�„'� •
THE NORTH CAROLINA 2L FOR IRON IS 300 pg/L.
1
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 1,173 Ng/L.
I-
-
DASHED ISOCONCENTRATION CONTOURS WHERE INFERRED.
NS = NOT SAMPLED
■
��
' VALUE CONSIDERED AN ANOMALY
t CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC BTV BUT WITHIN THE
BACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGIC SETTINGS.
-
DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENT MIGRATION
_ ..,
PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THE ASH BASIN.
DATA MAY INCLUDE LAB -QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLE NOTES
�■ ��
_
FOR QUALFIER DEFINITIONS.
`- •
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALID SAMPLE
•�■
•
RESULTS FOR EACH WELLDATA WITH HIGH TURBIDITY(>10 NTU) OR RESULTS THAT
■ ■ ♦
INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEEN REMOVED FROM
DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROM MARCH 2O15 TO
JULY 2017.
•�
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27, 2017.
AERAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE
ZCOORDINATE
SYSTEM FIPS 3200 (NAD83/2011).
I
GRAPHIC SCALE
FIGURE 11-9
0 362.5 725 1,450 2,175 2,900
ISOCONCENTRATION MAP
Feet
IRON IN TRANSITION ZONE GROUNDWATER
148RIVER STREET, SUITE 220
synTerra
GREENVILLE, SOUTH CAROLINA 29601
PHONE[phone]
www. nterracor .com
ROXBORO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
at,DUKE
ENERGY
SEMORA, NORTH CAROLINA
DRAWN BY: J ROBERTS DATE:03/15/2018
PROJECT MANAGER: C. EADY
CHECKED BY: C. EADY

I ; CCR-102BR
CCR-101 BR
NS
CCR-100BR
NS
CCR-202BR
NS
CCR-201 BR MW-6BR
CCR-203BR
NS 419
NS
MW-SBR
CW-2D
t
CCR-204BR
72S
ND
NS
MW-9BR
274
-_
CCR-205BR
NS
ABMW-3BRL
MW-8BR
822 ABMW-3BR
5540
2360
MW-12BR
ABMW-1B
r°♦
3300 168
CCRNS7BR
` `■
CCR-206BR
■
•
■-��
MW-33BR
CCR 208BR
NS
ABMW-2
750
..+
`
32
CCR-212E
MW-76R
CCR-209BR
NS
NS
CCR-2131
136
MW-32BR
NS
A ■1
180
CCR-214BR
`
CCR-210BR
NS
NS CCR-211 BR
NS
,�
'
C W-3
• ■ •
BG-1 BRLR
269
46
■
MW-31 BR
108
■■�■�_
BG-2BR
■ ■ �� RO-10-1
116
MW-4BR
290
SrgrF
gG-1 BR
117
p
113
R02040-RAW
55.4 R02040'RAW - sFMDR MW-1SBR
CCR-218B
NS
269
-- - RO-10-2
806
`
/
ND
RO-100565
V
■
■
-� rr7:
•.� ND +• MW-3BR I Ri
�r GPMW-3BR 4S MW-14BR
1230 f ,
� ■ ■ � . ND MW-28BR
GPMW-2BR
79
GPMW-1BR CCR-105BR
194 z NS MW-29BR ._
MW-27BR 43 CCR-103BR MW-22BR 104 . CCR-106BR CCR-112BR-!G6 'i
NS 1400 NS MW-30BR I NS
GM $-10 CW-1 1260 ■
162 ■ RO-16
CCR-107BR ND
CCR-104BR GMW-11
NS 62 NS
ABM68-7BR ABMW-7BRL MW-1B CCR-108BR ' R0-1 112
243 172 NS MW-23BRR I 232
MW-11 BR 388
INDUSTRIAL LANDFILL
24 CCR-109BR MW-20BRL FRO-1005
ABMW-6BR NS 169 ND
129 = BMW-4BR s a' ` I
RO-101
CCR-110BR 7
9400 r JJ MW-24BR - ND
LCID LANDFILL NS . , ND ,■ PROa =•RO-1011
MW 2BR ■
24500 GMW-7 CCR-111 BR MW-17BR 97 9
RO-1015
12 GMW-8 NS 332 L + 576
F.
CCR-200BR . 85 GMW-9 RO-7
RO-13
NS - 23 MW-25BR 53.8 ND ■ ■ _ •
I 1340 .: • . � �.
- R02014-RAW RO-1013
1400 ■
e
MW-13BR
3R w 493
MW-16BR
NNAWAY RD � 46 DUMW-19BRL �
4520 RO-11 RO-1010 RO-1016
R ND
MW-10BR RO-2
ND '� Np ■ ND
RO-15 RO-1D018
ND
;CR-215BR RO-8
•RO-03 ND RO-12
NS ND 1100
CR-216BR RO-1010A
NS 80
MW-26BR
CCR-217BR 1280
NS RO-1025
61.4
RO-1024
ND
LEGEND
OTOTAL IRON CONCENTRATION (fag/L)
ND NOT DETECTED ABOVE REPORTING LIMIT
NS NOT SAMPLED
HIGHEST CONCENTRATION AREA CONTOUR
NORTH CAROLINA2L CONTOUR
INTERMEDIATE CONTOUR
APPROX. BACKGROUND CONTOUR
BACKGROUND MONITORING WELL
DOWNGRADIENT MONITORING WELL
® SIDEGRADIENT MONITORING WELL
• UPGRADIENT MONITORING WELL
O WATER SUPPLY WELL
LANDFILL AREA
ASH BASIN WASTE BOUNDARY
—••—••■ ASH BASIN COMPLIANCE BOUNDARY
DUKE ENERGY ROXBORO SITE
BOUNDARY
STREAM
NOTES:
THE NORTH CAROLINA 2L FOR IRON IS 300 Ng/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 4,227 Ng/L
DASHED ISOCONCENTRATION CONTOURS WHERE INFERRED
NS = NOT SAMPLED
VALUE CONSIDERED AN ANOMALY
1 CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC BTV BUT WITHIN THE
BACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGIC SETTINGS.
DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENT MIGRATION
PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THE ASH BASIN.
DATA MAY INCLUDE LAB -QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLE NOTES
FOR QUALFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALID SAMPLE
RESULTS FOR EACH WELL. DATAWITH HIGH TURBIDITY(>10 NTU) OR RESULTS THAT
INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEEN REMOVED FROM
DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROM MARCH 2O15 TO
JULY 2017.
MW-1813R
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
1200
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27, 2017.
RO-1000
AERAL WAS COLLECTED ON JUNE 13, 2016.
ND
R02031-RAW
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE
•
54
COORDINATE SYSTEM FIPS 3200 (NAD83/2011).
I-
° ♦
%�RO-1001
RO-1026
�FRO__10_03_e
RO-1027
DN
17
-
synTerra
'DUKE
ENERGY
PROGRESS
GRAPHIC SCALE
0 320 640 1,280 1,920 2,560
Feet
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHON E 864-421-9999
DRAWN BY: J. ROBERTS DATE: 03/15/2018
PROJECT MANAGER: C. EADY
CHECKED BY: C. EADY
FIGURE 11-10
ISOCONCENTRATION MAP
IRON IN BEDROCK GROUNDWATER
ROXBORO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
SEMORA, NORTH CAROLINA

.1/ GPMW-3D
GPMW-2D 1730 -.
5670
55
I i . GPMW-IS'
3960
ABMW-51) 2160
• 5990
.F-MW6D.- FCC- 00 DD GN
ND
rNS ND
MW-5D - INDUSTRIAL LANDFILL
CW 2 22 CW 5 DOD
ND ND
CCR-203D CCR-202D -�
NS LCID LANDFILL ■
NS
r f ♦ � ,� 7
r ♦
ND
` NDWAS EXTENSION
hAW-95D
1� D 3FM0�9 ND
■
r MW-18D
• _ 196
i.
'♦rr,
i
g .
►
v
+F
• �/,
,
GRAPHIC SCALE
0 362.5 725 1,450 2,175 2,900
synTerra
Feet
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE
DUKE
r m,COM
E N E RGY
DRAWN BY: 1. ROBERTS DATE: 02/19/2018
ANAGY EADY
CHOJECT CKED C.EERRDY.
LEGEND
OTOTAL MANGANESE CONCENTRATION (fag/L)
ND NOT DETECTED ABOVE REPORTING LIMIT
NS NOT SAMPLED
HIGHEST CONCENTRATION AREA CONTOUR
NORTH CAROLINA 2L CONTOUR
INTERMEDIATE CONTOUR
APPROX. BACKGROUND CONTOUR
BACKGROUND MONITORING WELL
DOWNGRADIENT MONITORING WELL
SIDEGRADIENT MONITORING WELL
UPGRADIENT MONITORING WELL
WATER SUPPLY WELL
LANDFILL AREA
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
DUKE ENERGY ROXBORO SITE
��•�••� BOUNDARY
STREAM
NOTES:
THE NORTH CAROLINA 2L FOR MANGANESE IS 50 Ng/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 405 Ng/L
DASHED ISOCONCENTRATION CONTOURS WHERE INFERRED
NS = NOT SAMPLED
VALUE CONSIDERED AN ANOMALY
t CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC BTV BUT WITHIN THE
BACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGIC SETTINGS
DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENT MIGRATION
PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THE ASH BASIN.
DATA MAY INCLUDE LAB -QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLE
NOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALID SAMPLE
RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) OR RESULTS THAT
INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEEN REMOVED FROM
DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROM MARCH 2O15 TO
JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27, 2017.
AERAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE
COORDINATE SYSTEM RIPS 3200 (NAD83/2011).
FIGURE 11-11
ISOCONCENTRATION MAP
MANGANESE IN TRANSITION ZONE
GROUNDWATER
ROXBORO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
SEMORA, NORTH CAROLINA

J
611
1 ♦
I ,—
a.' ♦ \ ♦ • -i'.
r GPMW-2BR eo2s _ -3BR _ 1 ♦ 19 MW-14BR -
MW--102BR M 2030 R1636R 291 END
7 LEG
r`.- f CCR-1osBR 10TOTAL MANGANESE CONCENTRATION (pg/L)
Ns
All �,. ♦�Nk,
GPMW-1BR w Ns M--29BR ND NOT DETECTED ABOVE REPORTING LIMIT
176 ^MW-27BR,k,CCR-106BR 'G �'�
",, '-J`� ♦ Pr.h+ CCRNS1BR CCR-103BR 241 n. NS CCR-112BR-BG NS NOT SAMPLED
Ns -GMW-10 "Af MW-3oBR CCR-100BR 1110 RO-1s HIGHEST CONCENTRATION AREA CONTOUR
♦ `�..� ND 100 .. 1
ose NORTH CAROLINA 2L CONTOUR
a GMW-11 MW-1BR CCR-107BR
CCR 201BR 'c M 84BR ABMW-7BR ND sso Ns INTERMEDIATE CONTOUR
-,• 531 CCR-104BR :e'.CCR-108BR ,.MW-23BRR Ro-1o12
NS NS '"MW-5BR- MW-11BR Ns NS 68 . s.6 --APPROX. BACKGROUND CONTOUR
CCR-203BR CW-2D 376 a 52 ABMW-7BRLLAHDFILL .' ( .. - MW-20BRL
ND O ,� 6 I RO-loos BACKGROUND MONITORING WELL
NS I ' 71 CCR-109BR 345 0.78
MW098BR t �,+?,, 1 ABMW-6BR BMW-4BR NS `., Ro-1on DOWNGRADIENT MONITORING WELL
930 2420 CCR-110BR MW-24BR, �J -- 10
CCR-204BR FILL
Ns ND • Ro-1011 •.. SIDEGRADIENT MONITORING WELL
CCR-205BRNS ABMW-3BRL ABMW-3BR M 590R GMW-7 '` 144 1s
13900 ND CCR-111BR ! MW-17BR I 1aa UPGRADIENT MONITORING WELL
NS ABMW$1BR CCR-200BR. { GMW-8 �s 285 RO-1o1s
MW-8BR NS 75 r �` Ro-7 RO-13 s.z ,�. WATER SUPPLY WELL
795 MW-12BR sss '{. I,' _ _ G ND 9 �s886R /� " • s.4 3.7 -� ". .. LANDFILL AREA
• 1050 CCR-207BR ` R02014-RAW RO-1013 ASH BASIN WASTE BOUNDARY
,• � � ' " .� CCR-206BR Ns ♦ ss.7 se
v e NS f MW-13BR
ASH BASIN COMPLIANCE BOUNDARY
w _ CCR-208BR.: ABMW-2BR
OW-33BR �,� -2 1W- i MW_1gBR 189 Ro-1o10 e RO 131� ^'■ - DUKE ENERGY ROXBORO SITE
IN ���` sr:.- •- CCR-212BR 69 MW-19BRL '92 �� BOUNDARY
i I CCR 209BR Ns MW-10BR - 1040 Ro-1o1e ,
I
♦� M 128 NS CCR-213BR �• 352 1.s ' ' 4.1 STREAM
`+� • 128 Ro2,•
♦ MW-326R Ns V ` ND r Ro-is �..
95 CCR-214BR 0.62 NOTES:
CCR-210BR NS RO-3 1.6 RO-12 THE NORTH CAROLINA 2L FOR MANGANESE IS 50 Ng/L.
NS CCR-211 BR CCR-215BR ND qgq
�. NS NS PROVISIONAL BACKGROUIND THRESHOLD VALUE IS 1198 Ng/L.
f `• CCR-216BR RO-100.8: DASHED ISOCONCENTRATION CONTOURS WHERE INFERRED.
W-3D NS
e ' BG-1 BRLR � 24 CCR17BR -2l~;,. - 564 NS = NOT SAMPLED
252 MW-31BR NS 0-1022 _ ' VALUE CONSIDERED AN ANOMALY
`• -.
r R
BG-2BR 534 �',�. , .
RO-10-1 167 `"• MW-4BR .. _. _
1 CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC BTV BUT WITHIN THE
BACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGIC SETTINGS
R02056-RAW t DUE GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENT MIGRATION
J + 1100 -. s..+ BG-16R 35 10.2 „ - - !•- -- PATTERNS,
NS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THE ASH BASIN.
R02040-R 9W ., Srgr�H 390 R CCR-218BR ♦� DATA MAY INCLUDE LAB -QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLE
I&1 /yps MW�15BR NS .. RO-1024 NOTES FOR QUALIFIER DEFINITIONS.
ND
JMi f R02040-RAW.. SFa,Q " CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALID SAMPLE
1900 R9Rp ~I , ! RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) OR RESULTS THAT
RO-10-2' " MW-186R I . .1 INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEEN REMOVED FROM
ND . Js RO-1004 _
• 937 ��� 'v DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROM MARCH 2O15 TO
.1 121 a - - JULY 2017.
L ;7. RO-10-2 I� - RO-1000 5, - ,,-
ND I 4
RO-10-2 I ee . i"� R02031-RAW PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
369 - 12.9 -
,. - RO ' AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27, 2017.
I e ��-1 RO-1001 RO-112 6 AERIAL WAS COLLECTED ON JUNE 13, 2016.
e ♦ 12.4
DRAWING HAS BEEN SET ITH A PROJECTIONF NORTH CAROLINA STATE PLANE
COORDINATE SYSTEM F PS3 00 (NAD83/201
1 66.6
. - 3.8
I e
e
e GRAPHIC SCALE
0 362.5 725 1,450 2,175 2,900 FIGURE 11-12
Feet ISOCONCENTRATION MAP
e - WnTerra MANGANESE IN BEDROCK GROUNDWATER
GREENVILE,SOUTH CAROLINA 29601 ROXBORO STEAM ELECTRIC PLANT
DUKE -421-9999 DUKE ENERGY PROGRESS LLC
'/'1' www- nterracor -com e
ENERGY .11-N MANAGER-C. DY DATE:02/21/2018 SEMORA, NORTH CAROLINA
'�" ,� CHECKED BY: C. EADY

LAKE
=1
�T"`�.. �
�=r �''4 GPMW-2D ♦ ;:
I
GPMW-1D
ND
,
_
. 4•.e,_
:4 GPMW-IS
2.44
HEATED WATER
♦
�GMW 6 �
1
CCR-101D ND _
MW-6D::. IL 3.5
ND
t -
CW-5
MW-SD
BMW -SD
ND IAW INDUSTRIAL LANDFILL
CW-2 - 618 •
.
}
I
ND
CCR-100D
2.^36
-
CCR-203D
ND CCR-202D
ND
LCID LANDFILL
I`'y
IN
jw
CVN
NI
BG-1
ND
L
r
W, - ` ,.
"� �� �. a ': .
IFuo._� 1
VIP
41
I♦
v
Cs y
.y
I
1
GRAPHIC SCALE
0 362.5 725 1,450 2,175 2,900
synTerra
Feet
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
DUKE
"err
cor"DRAWN
4 E N E RGY
BY: 1, ROBERTS DATE: 02/22/2018
ANAGY EADY
CHOJECT CKED C.EERRDY.
LEGEND
10TOTAL MOLYBDENUM CONCENTRATION (fag/L)
ND NOT DETECTED ABOVE REPORTING LIMIT
NS NOT SAMPLED
HIGHEST CONCENTRATION AREA CONTOUR
NORTH CAROLINA 2L CONTOUR
INTERMEDIATE CONTOUR
APPROX. BACKGROUND CONTOUR
BACKGROUND MONITORING WELL
DOWNGRADIENT MONITORING WELL
SIDEGRADIENT MONITORING WELL
UPGRADIENT MONITORING WELL
WATER SUPPLY WELL
LANDFILL AREA
ASH BASIN WASTE BOUNDARY
—••n ASH BASIN COMPLIANCE BOUNDARY
DUKE ENERGY ROXBORO SITE
BOUNDARY
STREAM
NOTES:
NO NORTH CAR 0LINA 2L OR INTERIM MAXIMUM ALLOWABLE CONCENTRATION
ESTABLISHED FOR MOLYBDENUM.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 4.17 Ng/L.
DASHED ISOCONCENTRATION CONTOURS WHERE INFERRED.
NS = NOT SAMPLED
' VALUE CONSIDERED AN ANOMALY
t CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC BTV BUT WITHIN THE
BACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGIC SETTINGS.
DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENT MIGRATION
PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THE ASH BASIN.
DATA MAY INCLUDE LAB -QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLE
NOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALID SAMPLE
RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) OR RESULTS THAT
INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEEN REMOVED FROM
DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROM MARCH 2O15 TO
JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27, 2017.
AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE
COORDINATE SYSTEM RIPS 3200 (NAD83/2011).
FIGURE 11-13
ISOCONCENTRATION MAP
MOLYBDENUM IN TRANSITION ZONE
GROUNDWATER
ROXBORO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC

y .N +
l ♦ ■ ` ♦_
♦ ♦ 8.86
,�♦ + ♦S - -- - - , - _ CCR-102BR
�� 1_ '��♦�� 2.99
1 ND .�
�. 'CCR-101BR ;� CCR-103BRS GIAW
7.31 ND ♦+
= ♦ ♦ CCR-100BR 3'
1 ♦ ■ -�MUM4.36
` ♦ •• � MW-6BR ABMW-7BR
■ I , CCR-201BR 3.36 ,
■ _ CCR-202BR 1.22 1.66
1.75 CW-2D MW-56R MW-11BR
CCR-203BR ND 1.23 1.43
6.3 ABMW-6BR
MW-9BR 2.11 A
1.68
CCR-204BR LCID LANDFILL GMW-7;
1.37
ABMW-3BR MW-2BR ND '
CCR-205BR ABMW-3BRL ND ND
ND 2.06
MW-8BR CCR-.78
ABMW-1 BR -,:v 1.78
2.57 2.48 `
w FM-12BR
_♦' - 1.49 CCR-207BR
■ _ ■' �� CCR-206BRZ 2.47
v `. ■ 1.16 eCCR-208BR ABMW-2BR
11.4
• ♦ + +� MW-7BR CCR50
♦ y 65..
♦`■ • 1.51
♦ MW-32BR
' ! _ 4.66
CCR-210BR
25.6
■ + ` BG-1BRLR
■ + RO-10-1 71.1
♦�� ` . ND
`■ - ` BG-2BR
■ ' � ' ' 4.36
R02040-RA 3 614"
�Si
R02040-RAW
RO-1004
ND
RO-10-2
ND
16,
140 10.7
CCR-212BR'''.- 1
ND
CCR-213BR4Al,
�1.25 !
- CCR-214BR
1.87 [:O
I I
MW-3BR
Y.
0-1 '00000
ND
■ MW-3BR MW-286R MW.42BR `•
GPM+IV-2BR ND 9.82
ND ■
CCR-105BR
2.05 MW-29BR
1.82
_ MW-27BR
1.78 CCR-106BR ■ CCR-112I3R-BG
-10 1.81 I 8.91
g CW-1 MW-30BR
ND 6.11 ■ RO-16
MNpBR CCR-107BR � ND
GMW-11 ND MW-23BRR
CCR-104BR 117 CCR-1086R 3.pg ■ Ro-1012
1.2 193 - ND
ABMW-7BRL.2g
LANDFILL i
W1.28
Ro-loos
79 CCR-109BR I ND
BMW-4BR ND
R02014-RAVV Ro-10_17
ND
4.29 CCR-110BR nMW-24BR
1790 S 4.93 '� Ro-a Ro-1o11
CCR-111BR ND ND
2.77 MW-17BR I_. Ro-1o1s
GMW-8 7 RO-13 ND
GMW-9 RO-7 ■Q'y ND
3.22 _
ND MW-25BR-
1.49 ■101�4 .�..
♦♦ RO-6 ►
MW-13BR :' i
1.51 �, Roe e Ro-1o1e i< -
//�� 074 0.75
16UNNAWA,Rp" - - y
MW-19BRL "Ro-1o10' �"
MW-10BR 7.37 RO-11 ND 91
41
14.1 _
RO-1
4.42
CCR-216BR ...I
CW-313 1.41 MW-26BR - t
3.84 CCR-217BR - 8.49*
3.35 Ro-1 MW-31BR ND '.'�., -
1.26
�-
R02056-RAW `
3-1BR MW-4BR ND
4.79 p, 7.71
MW-15BR CCR-218BR �. �� RO-1024
ND
SFM0R9 6.05 ♦ 3.14 •�■ `.. /..
a0 ' • ■
• _ _ 4.32 -
•� +' - RO-1000
ND
R02031-RAW
♦' • ND RO-1026
RO-1001 ND
♦ -�♦♦�!♦ l ND
C RO-1027
41
RO-1003 ♦
' I
I ■
synTerra
_ DUKE
'
Nk,�' ENERGY
i°a*.monnocco
GRAPHIC SCALE
0 362.5 725 1,450 2,175
Feet
148 RIVER STREET- SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
2,900
DRAWN BY: J. ROBERTS DATE: 03/15/2018
PROJECT MANAGER: C. EADY
CHECKED BY: C. EADY
LEGEND
10T0TAL MOLYBDENUM CONCENTRATION (pg/L)
ND NOT DETECTED ABOVE REPORTING LIMIT
NS NOT SAMPLED
HIGHEST CONCENTRATION AREA CONTOUR
NORTH CAR0LINA2L CONTOUR
INTERMEDIATE CONTOUR
APPROX. BACKGROUND CONTOUR
BACKGROUND MONITORING WELL
"< DOWNGRADIENT MONITORING WELL
SIDEGRADIENT MONITORING WELL
UPGRADIENT MONITORING WELL
WATER SUPPLY WELL
LANDFILL AREA
ASH BASIN WASTE BOUNDARY
-•• ASH BASIN COMPLIANCE BOUNDARY
DUKE ENERGY ROXBORO SITE
BOUNDARY
_40STREAM
NOTES
NO NORTH CAROLINA 2L OR INTERIM MAXIMUM ALLOWABLE CONCENTRATION
ESTABLISHED FOR MOLYBDENUM.
PROVISIONAL BACKGROU IN THRESHOLD VALUE IS 35.2 Ng/L.
DASHED ISOCONCENTRATION CONTOURS WHERE INFERRED.
NS = NOT SAMPLED
VALUE CONSIDERED AN ANOMALY
t CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC BTV BUT WITHIN THE
BACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGIC SETTINGS.
DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENT MIGRATION
PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THE ASH BASIN.
DATA MAY INCLUDE LAB -QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLE NOTES
FOR QUALFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALID SAMPLE
RESULTS FOR EACH WELLDATAWITH HIGH TURBIDITY(>10 NTU) OR RESULTS THAT
INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEEN REMOVED FROM
DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROM MARCH 2O15 TO
JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27, 2017.
AERAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE
COORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-14
ISOCONCENTRATION MAP
MOLYBDENUM IN BEDROCK GROUNDWATER
ROXBORO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
SEMORA, NORTH CAROLINA

L }
L
J
1
I
.I
� V e
+�, +IN
♦
. 1
Y♦
�
1
1
�
�
16.
1.
=1
1
1
GPMW-2D
6.7
`a GPMW-:
6.1
? 6 .7 7I11'; GPMW-1S ° MW-22D
6.3
5.4
HEATED WA
40 GMW-6
e CCR-101D 6.6
M .6.9 ABMW-5D —
65 7.5 —
MW-sD 1
INDUSTRIAL LANDFILL
6.9 ofCCR-100D -
CW-2 �° 7.1
Y CW 5
CCR-203D �� s'$ LCID LANDFILL ■
CC 5-302D,,
V-1
6.6
IFuo._� 1
MW-18D
♦1 � v
r • I�
a
� � I
1
144
i
1
161p
synTerra
?DUKE
ENERGY
41
GRAPHIC SCALE
0 362.5 725 1,450 2,175
Feet
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
wwwsv "erracom.com
2,900
DRAWN BY: J. ROBERTS DATE: 02/19/2018
PROJECT MANAGER: C. EADY
CHECKED BY: C. EADY
LEGEND
OTOTAL pH CONCENTRATION (fag/L)
ND NOT DETECTED ABOVE REPORTING LIMIT
NS NOT SAMPLED
HIGHEST CONCENTRATION AREA CONTOUR
NORTH CAROLINA 2L CONTOUR
INTERMEDIATE CONTOUR
APPROX. BACKGROUND CONTOUR
BACKGROUND MONITORING WELL
DOWNGRADIENT MONITORING WELL
SIDEGRADIENT MONITORING WELL
UPGRADIENT MONITORING WELL
WATER SUPPLY WELL
LANDFILL AREA
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
DUKE ENERGY ROXBORO SITE
BOUNDARY
STREAM
NOTES:
THE NORTH CAROLINA 2L RANGE FOR pH IS 6.5 TO 8.5 S.U.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 6.3-7.6 S.U.
DASHED ISOCONCENTRATION CONTOURS WHERE INFERRED.
NS = NOT SAMPLED
VALUE CONSIDERED AN ANOMALY
t CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC BTV BUT WITHIN THE
BACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGIC SETTINGS.
DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENT MIGRATION
PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THE ASH BASIN.
DATA MAY INCLUDE LAB -QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLE
NOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALID SAMPLE
RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) OR RESULTS THAT
INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEEN REMOVED FROM
DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROM MARCH 2O15 TO
JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27, 2017.
AERAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE
COORDINATE SYSTEM RIPS 3200 (NAD83/2011).
FIGURE 11-15
ISOCONCENTRATION MAP
pH IN TRANSITION ZONE GROUNDWATER
ROXBORO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
SEMORA, NORTH CAROLINA

1
LEGEND
10TOTAL pH CONCENTRATION (pg/L)
ND NOT DETECTED ABOVE REPORTING LIMIT
NS NOT SAMPLED
HIGHEST CONCENTRATION AREA CONTOUR
NORTH CAROLINA 2L CONTOUR
INTERMEDIATE CONTOUR
GGR6.4 ABMW-3BRL BMW 3BR 66 *--•-6.7 •- - MW-17BR'� _j I I: u (e UPGRADIENT MONITORING WELL
6.4
7.2 55 CCR200BRI- � +. GMW-8 7.3 Ro-1o1s
Mw-aBR ss GMw-s WATER SUPPLY WELL
7.3 ,.,� ABMW-1BR , ;. 69 �g-xc 1�� 6.2 MW-25BR RO-7 v'� 5s -
7 ri.", 7,1 " s.1e rr LANDFILL AREA
MW-12BR Y,(
I ♦ 7.2 ccR-zmeR •-,""'� ° F RO-1016 Ro_1o13 ASH BASIN WASTE BOUNDARY
6.3 ; 5.8
CCR6206BR CCR-208BR ABMW-2BMW-136Ro-11 - R •`* `� ASH BASIN COMPLIANCE BOUNDARY
� R a
`,r• ♦ . M -� 6.1 7• ;M
7 + INA - 7.2 6.2 MW-19BRL s.a 10 Ro-1o61.4e i ,
DUKE ENERGY ROXBORO SITE
CCR-212BR
BOUNDARY
♦♦ • �, MW-7BR MW 3.;CCR-209BR w 5.9 - 74 �� STREAM
.-. - • 7.3 6.5 CCR-213BR MW-10BR RO-2 _ .
s.s
2BR l 6.6 / 7 6.63 r r; RO-15
7 r 7.6 - -_ - NOTES:
CCR-214BR _ '
- RO-3 R012
CCR--210BR 7.1 CCR-215BR 6.3 6 -8 •-' • 6 82 THE NORTH CAROLINA 2L RANGE FOR pH IS 6.5 TO 8.5 S.U.
6.5 r ` CCR-211BR 6.9 RO 1010A PROVISIONAL BACKGROUND THRESHOLD VALUE IS 6.8-8.3 S.U.
6.3 CCR6266BR ry�gly 266R 65 DASHED ISOCONCENTRATION CONTOURS WHERE INFERRED.
C .5
7.5 7.3 NS = NOT SAMPLED
_�, ? _ . • ` BG-1BRLR CCR-217BR Ro-1o2s
♦ ` 8.2 6.8 'VALUE CONSIDERED AN ANOMALY
MW-31BR
.. , ;...
1' Al , ` � BG 2BR 7 � ?CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC BTV BUT WITHIN THE
.' �° �` _ - BACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGIC SETTINGS.
• � . � ♦y RO 10-1 � ` �� �• � R02056-RAW
7.1 7.5 BG-16R MW-4BR i. 62 DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENT MIGRATION
! _ s 9 7,g • •� - '• - - --, PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THE ASH BASIN.
R02040-RAW SrgrP ,a. r DATA MAY INCLUDE LAB -QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLE
6.2 Hlyps MW7.3 BR CCR-218BR - _ .. �� RO-1026 _ NOTES FOR QUALIFIER DEFINITIONS.
RO-10-2 • CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALID SAMPLE
• q,, 6.65 RO-1004 �� ' W 18 • ., - RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITYA(>10 NTU) OR RESULTS THAT
r
6 2 M BR. •� t INDICATE GROUT CONTAMINATION OF THE WELL PH>9 HAVE BEEN REMOVED FROM
�. rpy ' , i • - r -• _ ��,.. _ 7.9 - .-.t - COLLECTION DATES DEPICTED ON FIGURE RANGE FROM MARCH 2O15 TO
e °,. •� I RO-FRO'._. - - JJULY 2017.
a R02031-RAW 5.1
6 . PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
RO-1001-'�'"�`° - AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27, 2017.
L i RO-1026 °-'
,
� . . � ♦ f/r' �- 6.3 57 AERAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE
C r RO-1027 COORDINATE SYSTEM FIPS 3200 (NAD83/2011).
7.3
' r R0-1003 .`
� I _
GRAPHIC SCALE
0 362.5 725 1,450 2,175 2,900 FIGURE 11-16
_ Feet ISOCONCENTRATION MAP
' synTerra 148RIVER STREET, SUITE 220 pH IN BEDROCK GROUNDWATER
GREENVILLE- SOUTH CAROLINA 29601 ROXBORO STEAM ELECTRIC PLANT
¢9 a j' DUKE PHONE864-421-acor DUKE ENERGY PROGRESS, LLC
a.. • www.nterr.com com
ENERGY PROJECT
ROJECTM J MANAGER-
DATE 02/21/2018 SEMORA, NORTH CAROLINA
PROJECT MANAGER: C. EADY
^ ^ ^ ^ ^ .... CHECKED BY: C" EADY

•
IN
♦ 1 •
LAKE
=1
GPMW-2D
ND - r
GPMW-1D I 'I
3.88 - - -
i GPMW-1S - -
4„k,- ND MW-22D I
"016' HEATED WATER ® 92.9 _
GMW-8
72.9 1
MNDD� CCN1D01D ®ABMW-5D
ND
�k
MW-5D INDUSTRIAL LANDFILL I
•- CCR-100D #
CW-2 ND CW-5 ND
ND ND
CCR-203D LCID LANDFILL ■ - f - �J
ND CCR-2021DD I`y
N
I ,
a
OUNNAWAYRD
r f ♦+ ,�INS
IND
MW-15D� - .-..
1� D 3F4fp�9 ND +
MW-18DQ�
• _ ND
r • ,s
� � I
1
g 1
F f 4 I
16.
v
1
.µ^
1
�
GRAPHIC SCALE
0 362.5 725 1,450 2,175 2,900
synTerra
Feet
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
DUKE
r
E N E RGY
DRAWN BY: 1. ROBERTS DATE: 02/19/2018
ANAGY EADY
CHOJECT CKED C.EERRDY.
LEGEND
10TOTAL SELENIUM CONCENTRATION (fag/L)
ND NOT DETECTED ABOVE REPORTING LIMIT
NS NOT SAMPLED
HIGHEST CONCENTRATION AREA CONTOUR
NORTH CAROLINA 2L CONTOUR
INTERMEDIATE CONTOUR
APPROX. BACKGROUND CONTOUR
BACKGROUND MONITORING WELL
DOWNGRADIENT MONITORING WELL
SIDEGRADIENT MONITORING WELL
UPGRADIENT MONITORING WELL
WATER SUPPLY WELL
LANDFILL AREA
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
DUKE ENERGY ROXBORO SITE
BOUNDARY
STREAM
NOTES:
THE NORTH CAROLINA 2L FOR SELENIUM IS 20 Ng/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 1.78 (Ng/L)
DASHED ISOCONCENTRATION CONTOURS WHERE INFERRED
INS = NOT SAMPLED
VALUE CONSIDERED AN ANOMALY
t CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC BTV BUT WITHIN THE
BACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGIC SETTINGS
DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENT MIGRATION
PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THE ASH BASIN.
DATA MAY INCLUDE LAB -QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLE
NOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALID SAMPLE
RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) OR RESULTS THAT
INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEEN REMOVED FROM
DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROM MARCH 2O15 TO
JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27, 2017.
AERAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE
COORDINATE SYSTEM RIPS 3200 (NAD83/2011).
FIGURE 11-17
ISOCONCENTRATION MAP
SELENIUM IN TRANSITION ZONE GROUNDWATER
ROXBORO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
SEMORA, NORTH CAROLINA

YW
J• • `-
,,�
,
' ♦,
1 .
GPMW-3BR
• N - .rr000 --�-
RO-1 -
- MW-3BR �;�a" �■
a r 3.3 MW-14BR
MW-22BR 00
MW-28BR ND
ND GPMW-2BR ND ♦♦
1.25
_ CCR-1056R �
• GPMW-16R 10.5 �MW-29BR
:RN02BRD1.22 MW-27BR ND
R-101BR CCR-103BR ND CCR-106BR ■ CCR-112BR-BG
ND ' 1.48 _ GMW-10 ND I ND
MW-30BR
:-100BR ND r�. CW-1 ND ■ Ro-1s
ND MW-1BIR 1.77 ND
.9W-6BR CCR-104BR 307 CCR-107BR '
wrt-�ui❑rt O -
ABMW-7BR 34.3 ND
CCR-202BR ND 4q ND ND GMW-11 - MW-23BRR ■ Ro-1o12 '
BMW-7BRL 108 CCR-108BR ■ ND
ND CW-2D MW-5BR ■ fMW-11BR- ND 12.2 ND .
CCR-203BR ND ND g ND LLANDFILL - MW-20BRL I RO-i005 ,
ND _v�', . ABMW-4BR CCR-109BR ND ND -
ABMW-6BR Np ND
FT- NDBR ND 2 CCR-110BR . MW-24BR Ro2o1a-RAW
RO-1 R LCID LANDFILL ND
'22.1
GMW-7 MW-17BR ND Ro-a RO-1011
CCR-205BR ABM-3BRL ,ABMW-3BR MW-2BR 8.36 CR-111BR ND ND NO
I
ND ND ND ND 111 MW-25BR I Ro-1o1s
MW-8BR CCR-200BR GMW-8 ND � r RO-13 ND
r ND ABMW-1BR ND ND GND_g Ro-D ems`' ND •_--
. • .' -_. s.. , , - .. ... ,.. MW-12BR ND
as '`'- i ♦� .
♦ ` ,, . • ND CCR-207BR •
22 S RO-1013
- ` - - .;L CCR-206BR - ND FRO-1 Np ND _ ■ -
7 ND id• �♦
- CCR-208BR ABMW-2BR MW-13BR -
... MW-33BR •. ND
ND ND MW-16BR / Ro-1o10 Ro-1o1s '
•% % ♦.. ♦ , ` ND ND DONNAWAYRD MW-19BRL �� '
1 • - �� M-7BR CCR-209BR CCRND2BR
W W M-10BR ND I KO-11 NO NO
M ND + ND - ND NO
MW-32BR CCR-213BR -
RO 2
ND
ND �� .
� � RO 15
J CCR-214BR
CCR-210BR -
�* ♦ �•`♦ ' ND CCR215BR
ND .
�i` '� �• CCR-211B ND
_ r I BG-16RLR ND CCR-216BR
♦ ` 3.99 CW-3D 1.16 -
♦ ND
- � ♦ ` BG-2BR � ND
ND
ND ■.-- ?� TMTRM
BG-1BR� A^ M NND
DBR l
j,
SrgrP • r
R02040-RAW H�rsi MW-15BR CCR-218BR
1.3 ND ND
RO-10-2MDR9Rp • • - ^
NO
IRO-1004 /
� ■_ - •ter
FRO-10031
ND
ND
r
ND
■ ■ '•s ND
RO-3 RO-8
ND ND
RO-12
NO
RO-1010A
BR 726ND
S
■ _000-
- ND
♦ ■
718BR 1,
LEGEND
10T0TAL SELENIUM CONCENTRATION (pg/L)
ND NOT DETECTED ABOVE REPORTING LIMIT
NS NOT SAMPLED
HIGHEST CONCENTRATION AREA CONTOUR
NORTH CAR0LINA2L CONTOUR
INTERMEDIATE CONTOUR
APPROX. BACKGROUND CONTOUR
BACKGROUND MONITORING WELL
"< DOWNGRADIENT MONITORING WELL
SIDEGRADIENT MONITORING WELL
UPGRADIENT MONITORING WELL
WATER SUPPLY WELL
LANDFILL AREA
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
DUKE ENERGY ROXBORO SITE
BOUNDARY
—4- STREAM
NOTES:
THE NORTH CAROLINA 2L FOR SELENIUM IS 20 Ng/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 1 Ng/L
DASHED ISOCONCENTRATION CONTOURS WHERE INFERRED
NS = NOT SAMPLED
' VALUE CONSIDERED AN ANOMALY
t CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC BTV BUT WITHIN THE
BACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGIC SETTINGS.
DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENT MIGRATION
PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THE ASH BASIN.
DATA MAY INCLUDE LAB -QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLE NOTES
FOR QUALFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALID SAMPLE
RESULTS FOR EACH WELL. DATAWITH HIGH TURBIDITY(>10 NTU) OR RESULTS THAT
INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEEN REMOVED FROM
DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROM MARCH 2O15 TO
JULY 2017.
ND RO-1000 - m
{•.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
ffi ND
RO-1001 _
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27, 2017.
AERIAL WAS COLLECTED ON JUNE 13, 2016.
-
♦
RO-1026 �"- RO-1027
�
-' ND '.
.s:
�
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE
- NO
-"
COORDINATE SYSTEM FIPS 3200 (NAD83/2011).
■
I
■ _
■
GRAPHIC SCALE
FIGURE 11-18
■ -
0 362.5 725 1,450 2,175 2,900
ISOCONCENTRATION MAP
I..
synTerra
Feet
SELENIUM IN BEDROCK GROUNDWATER
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
ROXBORO STEAM ELECTRIC PLANT
DUKE
PHON E 864-421-9999
www.synterracorp.com
DUKE ENERGY PROGRESS LLC
r
DRAWN BY J.ROBERTS DATE:03/15/2018
PROJECT MANAGER: C. EADY
`
4m�
ENERGY
SEMORA, NORTH CAROLINA
CHECKED BY: C. EADY

f �
1 �GPMW-2D
GPMW-lD �.GPMW-3D
-_� 1470 - a� 1680
1: a VC Es.
i LED"
HEATED WATER iiiiiiiiiiiiiiiiiiiiiiii�DISCHARGE -,
189 NS ABMW-51)
MW-5D 419
INDUSTRIAL LAP
CW2 379 �CCR-100D -
367 NS
CW-5
306
CCR 203D LCID LANDFILL
NS CCR-202D
�.- NS ti11�
� v 1
IN
�♦ -� J
CW-3
'.
r f `. ♦ ,� 205
1 �
448 `s
I
- rs� MW-1:
�Mi,t, sFya� 239
¢ W
s
• �' N,
♦ �4 OUNNAWAYR
MW-18D
♦ _ 665
AL
a
L ,
♦,N/, `►
�:r -.v A
k» oy l ll%-1 ILA
�' DUKE
3
ENERGY
41
GRAPHIC SCALE
0 362.5 725 1,450 2,175 2,900
Feet
148 RIVER STREET- SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.svnterracorD.com
DRAWN BY: J. ROBERTS DATE: 02/19/2018
PROJECT MANAGER: C. EADY
CHECKED BY: C. EADY
LEGEND
OTOTAL STRONTIUM CONCENTRATION (pg/L)
ND NOT DETECTED ABOVE REPORTING LIMIT
NS NOT SAMPLED
HIGHEST CONCENTRATION AREA CONTOUR
NORTH CAROLINA 2L CONTOUR
INTERMEDIATE CONTOUR
APPROX. BACKGROUND CONTOUR
BACKGROUND MONITORING WELL
DOWNGRADIENT MONITORING WELL
SIDEGRADIENT MONITORING WELL
UPGRADIENT MONITORING WELL
WATER SUPPLY WELL
LANDFILL AREA
ASH BASIN WASTE BOUNDARY
—••n ASH BASIN COMPLIANCE BOUNDARY
DUKE ENERGY ROXBORO SITE
BOUNDARY
STREAM
NOTES:
NO NORTH CAR0LINA2L OR INTERIM MAXIMUM ALLOWABLE CONCENTRATION
ESTABLISHED FOR STRONTIUM.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 760 Ng/L.
DASHED ISOCONCENTRATION CONTOURS WHERE INFERRED.
NS = NOT SAMPLED
VALUE CONSIDERED AN ANOMALY
t CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC BTV BUT WITHIN THE
BACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGIC SETTINGS.
DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENT MIGRATION
PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THE ASH BASIN.
DATA MAY INCLUDE LAB -QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLE
NOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALID SAMPLE
RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) OR RESULTS THAT
INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEEN REMOVED FROM
DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROM MARCH 2O15 TO
JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27, 2017.
AERAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE
COORDINATE SYSTEM RIPS 3200 (NAD83/2011).
FIGURE 11-19
ISOCONCENTRATION MAP
STRONTIUM IN TRANSITION ZONE GROUNDWATER
ROXBORO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
SEMORA, NORTH CAROLINA

mb
l WIN/ ` ♦_
J
♦\i�■�
♦ '�/ RO-1'
♦ 390
MW-22BR ■
` ♦ 574
GPMW-2BR
�• • ♦. ti � h 1300
♦ 1 i .0"%it■ CCR-102BR GPMW-0.00
1BR -
INS
` V r ,'CCR-103BR-' GMW-10 � s
♦ ♦ 1 NS INS 127
416\ ffi ♦ �� '. - CCR-100BR -
(33 ♦ CCR-104BR
♦■ CCR 201 BR MW-56BR, ,ABMW-7BR INS GM1
♦ CCR-202BR NS 236 M
INS F CW 2D MW-SBR MW-11BR' ABMW-7BRL
CCR-203BR ° 327 319 .I 189 734 L l
ABMW-6BR _
MW-9BR ' 208 190
165
CCR-204BR LCIOLANDFILL •GMW-7 -
NS 589
CCR-205BR BMW-3BRL ABMW-3BR MW-2BR'
INS818 1860 607 '
CCR-200BR GMW-8
MW-8BR ABMW-1BR INS 1060
222 f i 178
MW-12BR 11
I
I
GPMW-3BR • 0000
/
MW-3131R
• •
_
• 1390
MW-14BR
MW-28BR 164
278
CCR-105BR
NS
MW-29BR
FMW-27BR
147
253 CCR-106BR
NS �
` `
CCR-112BR-BG '
MW-30BR -
INS
I
367
288
■ RO-16
1 BR
121
�.
08
CCR-107BR
V-11
INS G.
I
2 CCR-108BR MW-23BRR
RO-1012
10s
INS170 MW-20BRL
CR-109BR
184
--- Ro-ioos
NS
_
163
- ' R02014-RAW
pro ��nQo
274 - an-11117
INS
R-11113 Myy_17
INS 892
w 223 86
_♦• ■ ■ 1CCR-206BR CCRNS7BR
INS
`• ♦ MW-33BR _ CCR-208BR 590 INSABMW-2BR MW-16BR MW-13BR
568 _ 424
��♦ • � fl � : . - ', ♦ � 172 DUNNAWAYk0
^7 CCR-212BR '�-_Y; - MW-19BRL
♦ • CCR-209BR ,... Ro-1
♦♦ y - MW-7BR -2 INS - - ' MW-10BR 228 23s
•`■ • 132 CCR-213BR
• • MW-32BR jil INS'(.
! ■
1y ■ � 602 CCR-214BR R p2 � Ro-e
�•� ♦ •� CCR-210BR INS CCR-215BR Ro_3 255
lift
INS INS 80
&n/
CW-3D CCR-216BR
1 BG-16RLR
� • � 271 � INS- MW-26BR
• • ♦♦ 819 ITC-217BR 261 -
• MW-31BR
♦�� ` ♦ BG-2BR 316 NS
•` ■ ■ ` • 268 MW-4BR i
■ ■ �_ _ - Ro-10-1 BG-16R` - 272 t_ R020`.
179
` .& Ro2oao-R6 grFy s' MW-159R CCR-218BIR 't �• �� •
136 INS
277
144
RO-1004 + _ _.MW-18BR • •�`� ■ ♦ y
176
jiii-
1.:r 1 R02031-RAW 167
11
�rt
RO-1001
- ■ •�♦♦ 26
119 R010.7
1 , •
RO-1118
FRO- 0003 . 118
• 101 i`l ■ll^v
- x I ■
'y
r
ND 2so
RO-
268 i
MW-256R Q
1860
-1010A RO-1010
180 135
■
RO-1025
139
RAW 40
68.4
0-1024
93.3
DUKE
ENERGY
41
LEGEND
10T0TAL STRONTIUM CONCENTRATION QIg/L)
ND NOT DETECTED ABOVE REPORTING LIMIT
NS NOT SAMPLED
HIGHEST CONCENTRATION AREA CONTOUR
NORTH CAR0LINA2L CONTOUR
INTERMEDIATE CONTOUR
APPROX. BACKGROUND CONTOUR
IIIIIIII BACKGROUND MONITORING WELL
DOWNGRADIENT MONITORING WELL
® SIDEGRADIENT MONITORING WELL
® UPGRADIENT MONITORING WELL
WATER SUPPLY WELL
" LANDFILL AREA
SASH BASIN WASTE BOUNDARY
—••—••■ ASH BASIN COMPLIANCE BOUNDARY
DUKE ENERGY ROXBORO SITE
���■ BOUNDARY
STREAM
NOTES
NO NORTH CAROLINA 2L OR INTERIM MAXIMUM ALLOWABLE CONCENTRATION
ESTABLISHED FOR STRONTIUM.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 232 Ng/L.
DASHED ISOCONCENTRATION CONTOURS WHERE INFERRED.
INS = NOT SAMPLED
' VALUE CONSIDERED AN ANOMALY
t CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC BTV BUT WITHIN THE
BACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGIC SETTINGS.
DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENT MIGRATION
PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THE ASH BASIN.
DATA MAY INCLUDE LAB -QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLE NOTES
FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALID SAMPLE
RESULTS FOR EACH WELL. DATAWITH HIGH TURBIDITY(>10 NTU) OR RESULTS THAT
INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEEN REMOVED FROM
DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROM MARCH 2O15 TO
JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27, 2017.
AERAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE
fy COORDINATE SYSTEM FIPS 3200 (NAD83/2011).
GRAPHIC SCALE
0 362.5 725 1,450 2,175 2,900
Feet
148 RIVER STREET- SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
DRAWN BY: J. ROBERTS DATE: 03/15/2018
PROJECT MANAGER: C. EADY
CHECKED BY: C. EADY
FIGURE 11-20
ISOCONCENTRATION MAP
STRONTIUM IN BEDROCK GROUNDWATER
ROXBORO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
SEMORA, NORTH CAROLINA

. 1 a
- l i GPMW-2D
430 ♦ �
♦ ♦ T GPMW-3D
GPMW-IS ♦ - 1200
�J. 1100 r•' - LEGEND
OTOTAL SULFATE CONCENTRATION (mg/L)
I {j ="~ • ., GPMW-1D •- _
1100 ' - I- ND NOT DETECTED ABOVE REPORTING LIMIT
{t �
• NS NOT SAMPLED
GMW-6
MW-22D
sso � HIGHEST CONCENTRATION AREA CONTOUR
• ccR-101D ,�g� - NORTH CAROLINA 2L CONTOUR
5.3
Mw-sD aemw-sD INTERMEDIATE CONTOUR
37 MW-5D
aoo 2.4 '-APPROX. BACKGROUND CONTOUR
CCR-100D INDUSTRIAL LANDFILL
cw-z 25 ® EXTENSION � BACKGROUND MONITORING WELL
80 ,CW5 �_
` - DOWNGRADIENT MONITORING WELL
250
CCR-203D LCID LANDFILL i
270
Zyp t SIDEGRADIENT MONITORING WELL
CCR-202D +, - , rI. I UPGRADIENT MONITORING WELL
WATER SUPPLY WELL
WESTASH
'00 - �� ` LANDFILL AREA
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
DUKE ENERGY ROXBORO SITE
�••�••- BOUNDARY
_10- STREAM
.•► . - - J
. - - - NOTES:
^ L F. r • THE NORTH CAROLINA 2L FOR SULFATE IS 250 mg/L.
cw-3 - - - - - - PROVISIONAL BACKGROUND THRESHOLD VALUE IS 37 mg/L.
35 I DASHED ISOCONCENTRATION CONTOURS WHERE INFERRED.
Y&
- NS =NOT SAMPLED
J *VALUE CONSIDERED AN ANOMALY
t CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC BTV BUT WITHIN THE
CW-4 BACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGIC SETTINGS.
37 DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENT MIGRATION
PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THE ASH BASIN.
MW-15D . DATA MAY INCLUDE LAB -QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLE NOTES
+ry 28 - FOR QUALFIER DEFINITIONS.
• CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALID SAMPLE
MW-18D '�'y RESULTS FOR EACH WELL. DATAWITH HIGH TURBIDITY(>10 NTU) OR RESULTS THAT
INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEEN REMOVED FROM
- _ 32 - . - DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROM MARCH 2O15 TO
JULY 2017.
I �/►^ `♦ PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
♦J �� I _ AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27, 2017.
�♦ ri, �� - AERAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH PROJECTION OF NORTH CAROLINA STATE PLANE
FI
rI, ` COORDINATE SYSTEM PS 3200 (NAD83/2011).
0 362.5 725 GRA1,4500 SCA 2,175 2,900 FIGURE 11-21
Feet ISOCONCENTRATION MAP
I symTeaa 148 RIVER STREET, SUITE 220 SULFATE IN TRANSITION ZONE GROUNDWATER
,i GREENVILLE, SOUTH CAROLINA 29601 ROXBORO STEAM ELECTRIC PLANT
DUKE —"s r 64-421-9999 DUKE ENERGY PROGRESS LLC
www.s nterracor .com �
. ENERGY DRAWN BY:1.ROBERTS DATE:02/26/2018 SEMORA, NORTH CAROLINA
PROJECT MANAGER: C. EADY
„✓ CHECKED BY: C. EADY

I 900
CC2470
MW-9BR
CCR-204BR 21
210
r%
.40 RO-1 i�' 440 -
GPMW-2BR 51 MW-3BR
1000 - 1400 MW-14BR
MW-22BR ■ ■ ■ r • MW-28BR 13 '
410 42
CCR-105BR �i •
_ - 400 MW-29BR .:.
,.
CCR-102BR GPMW-1BR 19
360 1000 MW-27BR
?'8 . -106BR210 CCR
CCR-1101 BRCCR-103BRGMW-10 440
Iqm W30BR
HEA—CR-130
64C
-. .. MW-1
'■■ CCR-201 BR 380
75 CCR-107BR
MW-6BR CCR-104BR
3700 14M1 1
1W10-0
130
WW,"44\
ABM
---
AB
MW-6R ABMW-48B17 LCID 7
58
LANDFILL
CCR--820056R h� ABMW-3BRL ABMW-3BR M 47 e1K GMW0-7
ti 500 2700
MW-8BR CCR-2003R GMW-8
25 'yr, ABMW-1 BR 45 580
zo �
MW-12BR n - -
28
CCR-207BR
CC R 06BR1. 410
4G0 I
ccrc-�uslsrc MW-23BRR ■
1300 23 ■
LANDFILL _
MW-20BRL
CCR-109BR
10 I
330
CCR-110BR.
.
• R02014-R
1300
CCR-111BR '
510
MW-24BR •
68 ■ RO-4
7
- MW-17BR L _ -
'25
180
MW-33BR CCR-208BR ABMW-2BR MW32
71 1000
110 MW-16BR -1
J" ` CCR-212BR 25 DUNNAWAYRD
MW-7BR� CCR-209BRfje 39 MW-106R
23 Y 26 CCR-213BR 40 rh
MW-326�ftCCR-21
49 -
41(CCR-214BRCCR-2106RR 62 CCR-215BR
10 54
■ w BG-1BRLR N3 JEER -216BR
ah
MWA BRL
1.4 RO-11 RO-1010
31.1 8.2
FRO-2 _/
N�� . r RO-15
*47,1
RO-3 RO-8 j71 29.2ROCW-47 .-
/ . 390 O 32 MW-26BR IV '�
MW-31BR 49 RO-1025
30 3.7
MW-46R
34 _ R02056-RAW
1. ♦ * 4
MW-15BR CCR-218BR ■ o RO-1024
43 31.3 YI
SFM"14 27 - ♦ `s
Rp � -
. MW-18BR
�� .. 5.8 R02031 ■ _
• RO-1000
■ 3.9
-RAW `
rFRO-71003,
♦ •_
25 •` L
DUKE
ENERGY
8.4
1
dr
GRAPHIC SCALE
0 375 750 1,500 2,250 3,000
Feet
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.s "e"... D.com
DRAWN BY: J. ROBERTS DATE: 03/15/2018
PROJECT MANAGER: C. EADY
CHECKED BY: C. EADY
ice", I I-s
LEGEND
10T0TAL SULFATE CONCENTRATION (mg/L)
ND NOT DETECTED ABOVE REPORTING LIMIT
NS NOT SAMPLED
HIGHEST CONCENTRATION AREA CONTOUR
NORTH CAR0LINA2L CONTOUR
INTERMEDIATE CONTOUR
APPROX. BACKGROUND CONTOUR
BACKGROUND MONITORING WELL
DOWNGRADIENT MONITORING WELL
SIDEGRADIENT MONITORING WELL
UPGRADIENT MONITORING WELL
WATER SUPPLY WELL
LANDFILL AREA
ASH BASIN WASTE BOUNDARY
—■■—■■ ASH BASIN COMPLIANCE BOUNDARY
DUKE ENERGY ROXBORO SITE
BOUNDARY
—4- STREAM
NOTES:
THE NORTH CAROLINA 2L FOR SULFATE IS 250 mg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 73.5 mg/L.
DASHED ISOCONCENTRATION CONTOURS WHERE INFERRED.
NS = NOT SAMPLED
VALUE CONSIDERED AN ANOMALY
t CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC BTV BUT WITHIN THE
BACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGIC SETTINGS.
DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENT MIGRATION
PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THE ASH BASIN.
DATA MAY INCLUDE LAB -QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLE NOTES
FOR QUALFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALID SAMPLE
RESULTS FOR EACH WELL. DATAWITH HIGH TURBIDITY(>10 NTU) OR RESULTS THAT
INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEEN REMOVED FROM
DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROM MARCH 2O15 TO
JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27, 2017.
AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE
COORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-22
ISOCONCENTRATION MAP
SULFATE IN BEDROCK GROUNDWATER
ROXBORO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
SEMORA, NORTH CAROLINA

J z s'f
b
WIN
� � •• a .�JGPMW-3DCOOLING WATER
- GPMW-2D 1900 --
__
I,
1800 "
I '
-! GPMW-1S
_r MW-22D
_ CCR-101D 1700 1500
1 390 -
CW-5 - 6
MW-6D GMW-
490 - MW-
250 MW-51D ABMW-5D
1200
CW-2 ` 700 -.., CCR-100D 280 INDUSTRIAL LANDFILL
440 460
CCR-203D LCID LANDFILL- ` —
760
a -
- POO'
ly . -
•♦ Cyy_340
, •
�� �- ``♦
a& �' SrArFHlyys ♦ `
t
%._ j!-.ti .._.
G
a
PONDS
R
TOR
MW-18D
• _1 750
■
,
•
'ter - •
41
1'
■
a
GRAPHIC SCALE
0 362.5 725 1,450 2,175 2,900
Feet
synTerra
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE 864421
DUKE
VENERGY
www.s nterracor o.com .com
ROBERTS
DRAWN BY J.
EADY DATE 03/15/2018
CHOC ED BYNC EADY
LEGEND
1 ]TOTAL DISSOLVED SOLIDS CONCENTRATION (mg/L)
ND NOT DETECTED ABOVE REPORTING LIMIT
NS NOT SAMPLED
HIGHEST CONCENTRATION AREA CONTOUR
NORTH CAROLINA2L CONTOUR
INTERMEDIATE CONTOUR
APPROX. BACKGROUND CONTOUR
BACKGROUND MONITORING WELL
DOWNGRADIENT MONITORING WELL
SIDEGRADIENT MONITORING WELL
UPGRADIENT MONITORING WELL
WATER SUPPLY WELL
LANDFILL AREA
ASH BASIN WASTE BOUNDARY
—■■—■• ASH BASIN COMPLIANCE BOUNDARY
DUKE ENERGY ROXBORO SITE
BOUNDARY
—4- STREAM
NOTES:
THE NORTH CAROLINA 2L FOR TOTAL DISSOLVED SOLIDS IS 500 mg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 540 mg/L.
DASHED ISOCONCENTRATION CONTOURS WHERE INFERRED.
NS = NOT SAMPLED
' VALUE CONSIDERED AN ANOMALY
t CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC BTV BUT WITHIN THE
BACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGIC SETTINGS.
DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENT MIGRATION
PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THE ASH BASIN.
DATA MAY INCLUDE LAB -QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLE NOTES
FOR QUALFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALID SAMPLE
RESULTS FOR EACH WELL. DATAWITH HIGH TURBIDITY(>10 NTU) OR RESULTS THAT
INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEEN REMOVED FROM
DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROM MARCH 2O15 TO
JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27, 2017.
AERAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE
COORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-23
ISOCONCENTRATION MAP
TOTAL DISSOLVED SOLIDS IN TRANSITION ZONE
GROUNDWATER
ROXBORO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC

■
J
n -
. `..
-.GPMW-3BR •• '
♦� i
r
780 O
• .
`.'�. GPMW-2BR L
�MW-3BR2000 • a. 2200 MW-14BR + g
MW-22BR� ■ ' - 360 f' -
1 � .. MW-28BR •
♦p. • ` CCR-105BR /±
• /� ' s ii. GPMW-1BR 580 MW-29BR LEGEND
• ' �►• ♦ • -� ♦ CCR-102BR 300
♦ l ■ '• • " • ;' 850 1700 MW-27BR ■ _ 10TOTAL DISSOLVED SOLIDS CONCENTRATION (mg/L)
■♦ `V ✓ f � �-' � , �" I l 550 CCR-106BR CCR-112BR-BG
.• (s CCR-101BR CCR-103BR GMW-10 . 770
1 430 1200 180 I 170 ND NOT DETECTED ABOVE REPORTING LIMIT
CW-1 MW-30BR
CCR-100BR ®420 480 RO-16 NS NOT SAMPLED
f ■ - 460 MW80 R CCR-107BR ND HIGHEST CONCENTRATION AREA CONTOUR
-• CCR-201BR MW'6BR CCR-104BR 470
CCR-202BR 5500 250 ABMW-7BR ,C GMW-11 ■ NORTH CAROLINA2L CONTOUR
_ 1900 RO-1012
i 440 900 CCR-108BR
2400 CW-2D MW-5BR MW-11BR ABMW-7BRL 1900 MW-23BRR I 116 INTERMEDIATE CONTOUR
CCR-2036R 440 560 340 570 L CCR-109BR 280 • FRO-1005 APPROX. BACKGROUND CONTOUR
790 qg ZWp4BR 870 MW250 RL , 129
R0-1017 � BACKGROUND MONITORING WELL
MW-9BR ABMW-6BR MUM
CCR-204BR 220 340 CCR-110BR _ 224
2000 LCID LANDFILL 1800 MW-24BR R0201a RAW / — DOWNGRADIENT MONITORING WELL
F 300 �!'' 241 + _FRO-1011
cnnwa Ro 4 G
15z SIDEGRADIENT MONITORING WELL
CCR-205BR -A CCR-111BR
2200 ABMW-3BRL BMW-3BR 820 1100 267 RO-1015
920 4200 MW-17BR- L _ Ro-13 160 UPGRADIENT MONITORING WELL
MW-8BR MW-2BR GMW-8 410 138
ABMW-1BR CCR-200BR 570 1600 ® GMW-9 •
370 ® 390 160 MW-25BR Roa o, • � ■ • WATER SUPPLY WELL
c MW-12BR 340 - 590 .♦� • . �° �� _ • • LANDFILL AREA
420 -`
RO-101
CCR-207BR 3
CCR-2o6BR / 160 ASH BASIN WASTE BOUNDARY
4500 ■ ■�•� • e° •�.
3400 ' MW-136R. RO-1016 •• ASH BASIN COMPLIANCE BOUNDARY
_ CCR-208BR ABMW-2BR 420 5 117 DUKE ENERGY ROXBORO SITE
• MW-33BR
♦, �� ■ 430 7300 480 MW-16BR RO-1018"�"' BOUNDARY
290 DUNNAWAYRD MW-19BRL
CCR-212BR 209 '
•� MW-7BR CCR-209BR 150 MW-10BR 460 RO-11 RO1010 -411-- STREAM
• 250 B40 330 326 206
CCR-213BR RO-2 ■i
✓• MW-32BR 640 383 ■ ■ RO-15 NOTES:
t` ■ ♦ 620 ^•® 456 THE NORTH CAROLINA 2L FOR TOTAL DISSOLVED SOLIDS IS 500 mg/L.
CCR-214BR RO-3
CC 481pOBR CC 4001 BR 440 CCRso 6BR 410 R366 RO-12 _ PROVISIONAL BACKGROUND THRESHOLD VALUE IS 530 mg/L.
��♦ • - 463
DASHED ISOCONCENTRATION CONTOURS WHERE INFERRED.
•• BG-1 BRLR CW-3D RO 101332 ■ NS=NOT SAMPLED
340
�', ♦ 1100 310 MW-26BR
♦ 'VALUE CONSIDERED AN ANOMALY
■ • CCR-217BR 500
` -- 1 CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC BTV BUT WITHIN THE
��•, i� � ♦ ■ BG-2BR MW31 BR 260 - RO-1025 BACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGIC SETTINGS.
• ` 390 191 DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENT MIGRATION
`■ ■ ♦ �' 320 • ��1�07.
PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THE ASH BASIN.
RO-1 4 R0DATAMAY INCLUDE LAB -QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLE NOTES
♦ BG-1BR • MW-4BR644310 • 27p - FOR QUALIFIER DEFINITIONS
qr `• • ' CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALID SAMPLE
R02040-RAW Fy CCR-218BR ■ �� • R0-1024 RESULTS FOR EACH WELL DATAWITH HIGH TURBIDITY(>10 NTU) OR RESULTS THAT
891 �1'S) MW-15BR ♦ INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEEN REMOVED FROM
3 s 350
200 171 DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROM MARCH 2O15 TO
F `
- JULY 2017.
369 q RID •
= RO-1004 ' - MW-18BR • PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS
284
RO-1000 " AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27, 2017.
■ R02031-RAW - 150 AERIAL WAS COLLECTED ON JUNE 13, 2016.
*. S' • 165.*.. - DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE
■" ;t RO-1026 COORDINATE SYSTEM FIPS 3200 (NAD83/2011).
e RO 1001 152
" '".
- ■
♦
♦
179
"� MO-1027
205
RO-1003
199
/
f'
■
�-
-,
GRAPHICSCALE
FIGURE 11-24
■
0 320 640 1,280 1,920 2,560
ISOCONCENTRATION MAP
Feet
TOTAL DISSOLVED SOLIDS IN BEDROCK
synTerra
148 RIVER STREET, SUITE 220
GROUNDWATER
GREENVILLE, SOUTH CAROLINA 29601
'I
DUKE
=r,',64-421-9999
ROXBORO STEAM ELECTRIC PLANT
YVRA nY-- J.RO ROBERTS DATE:03/15/2018
DRAWNBY--N
DUKE ENERGY PROGRESS LLC
ENERGY
GER-C_S
PROJECT MANAGER: C. EADY
SEMORA NORTH CAROLINA
�
-
PROGRESS
CHECKED BY: C. EADY
P:\Duke Enerav Pro ress.1026\00 GIS BASE DATA\Roxboro\Ma
Docs\CSA Supplement 2\ISOCON MAPS\TDS BED ccr.mxd

V �
IN ,�•
Jr1
a1.
HYCO
O
-01
0444
-
H�'
s�
�-�.,•� --ram . ..�
31 ' ♦ �1
CCR-101 D
NS
ABMW-O5D
1I ND
"IRI
CCR-100D
NS
CW-OS
0.00029 LCID LANDFILL
D.
GPMW-03D
D2D - - � 0.000132
�
ii�iHL�i
1S MW-22D
� 0.000962 -
f - 1
I
1
0.00235
INDUSTRIAL LANDFILL
,
- DUNNAWAYRD
v
n
DUKE
ENERGY
LEGEND
10T0TAL URANIUM CONCENTRATION (pg/L)
ND NOT DETECTED ABOVE REPORTING LIMIT
NS NOT SAMPLED
HIGHEST CONCENTRATION AREA CONTOUR
NORTH CAROLINA 2L CONTOUR
INTERMEDIATE CONTOUR
APPROX. BACKGROUND CONTOUR
BACKGROUND MONITORING WELL
DOWNGRADIENT MONITORING WELL
SIDEGRADIENT MONITORING WELL
UPGRADIENT MONITORING WELL
WATER SUPPLY WELL
LANDFILL AREA
—ASH BASIN WASTE BOUNDARY
—••—••- ASH BASIN COMPLIANCE BOUNDARY
DUKE ENERGY ROXBORO SITE
BOUNDARY
STREAM
NOTES:
THE NORTH CAROLINA 2L FOR TOTAL URANIUM IS 0.03 Ng/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 0.005 Ng/L
DASHED ISOCONCENTRATION CONTOURS WHERE INFERRED
NS = NOT SAMPLED
' VALUE CONSIDERED AN ANOMALY
t CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC BTV BUT WITHIN THE
BACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGIC SETTINGS.
DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENT MIGRATION
PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THE ASH BASIN.
DATA MAY INCLUDE LAB -QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLE NOTES
FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALID SAMPLE
RESULTS FOR EACH WELLDATAWITH HIGH TURBIDITY(>10 NTU) OR RESULTS THAT
INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEEN REMOVED FROM
DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROM MARCH 2O15 TO
JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27, 2017.
AERAL WAS COLLECTED ON JUNE 13, 2016.
' DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE
COORDINATE SYSTEM RIPS 3200 (NAD83/2011).
GRAPHIC SCALE
0 362.5 725 1,450 2,175 2,900
Feet
148 RIVER STREET- SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
DRAWN BY. J. ROBERTS DATE: 02/26/2018
PROJECT MANAGER: C. EADY
CHECKED BY. C. EADY
FIGURE 11-25
ISOCONCENTRATION MAP
TOTAL URANIUM IN TRANSITION ZONE
ROXBORO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
SEMORA, NORTH CAROLINA

CCR-20
NS
CCR-203BF
NS
'4.f l MW-9BR ♦ i
14BR 0.000218 �
f
N20513
8BR
)40�
CCR-206BR n
NS
NS
.. FT
NS
NS
N.
r 7 . •
GPMW-2BR GPMW-313R .+ •� - /
0.00465 RO-1 0.000998
' Ns MW-3BR
ND
MW-22BR � - -
0.00236
0.00279
�' CCR-105BR f
NS MW-29BR
GPMW-1BR '. 0.00185 �-
0.00342 MW-27BR' ' CCR-106BR
CCR-103BR .}� 0.00285 NS I CCR-112BR-BG
NS CW-1 jkfMW-30BR NS
0.000155 0.00357 Ro-1s
MW-11311 CCR-107BR Ns
• CCR-104BR 0.00541 NS
NS N - I---- '-I ♦ 0'ABAW-7BGMW-11 C` C.'R -108BR
•% �W 10.00112 NS ♦-
.MW-23BRR
0-2MW-5BR -ABW 0.0025814-WD .003ND 0.000317 CCR9BR- , MW-20BRL
� ` MW-6BR ABMW-4BR NS
I
0.00035
4 • 0.000648 0.000491 CCR-110BR -
\�? LCID LANDFILL - NS } t- - MW-24BR . �J
' v 1 MW-2,CR-111BR 0.000983
,BMW-3BRL BMW-3BR 0.000279 GMW-7 M
0526 NS 0.0002
0.00089 0.00181 002
-a
I RO-13
.GMW 0.0194 GMW-9
-8 Ns
ABMW-1BR - CCR-200BR - �♦ L ♦ RO-7 -,� '
Ns•
NS 0.0001 MW-2
0.0000712 5BIR
0.00206 ' - --� A
CCR-207BR ;��}-k.. ♦♦ ,`�'R
NS ♦ MW-13BR r. e
v _ MW-33BR CCR-208BR ABMW-2BR !� 0.0001 MW-11BRL
6. ♦ ` 0.00108 ,} NS 0.000633 0.0001 �s� �.,
7 C • �� DUNNAWAYRD ♦
+ iii • P.
- " CCR-212BR - ♦�+�
♦ f ♦ CCR-209BR NS MW-10BR l m '
NS CCR-213BR ! �, 0.0,308 ` R02 R 8 NO-11 FRO-15
♦ MW-32BR Ng ?f,'.. .1 NS NS., Ns
_ � 0.00126 i+ a
rhjCCR-214BR ♦' o-sos Ro-12
�+ r•� CCR-210BR Ng CCR-215BR'. I NS 1
NS
• CCR-211 BR �>: CCR-216BR f
• __ 1 ♦ NS
BG-1BRLR f : CW-3D NS �,� I'� MW-26BR
- ♦ • 0.0385 0.000807 ' CCR-217BR ) ; 0 ' 0.004 •
\� f` ♦ ` BG-02BR O� 0 002 3W-31R `, NS - - ♦' •
ND
- . + r`•3r BG-01 BR ` MW-04BR+
0.000871 �' 0.000952 '
}. �• H�rsi MW-15BR CCR-218BR
RO
-iNs SFMD�0.000482 ' j NSYI r a
MW-18BR
10.000231
7 A '-�•,
rsc♦'
•
•
SCALE
,tipGRAPHIC
0 362.5 725 1,450 2,175 2,900
Feet
nTerra
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PWHOWNEBe4�o1-9om9
DUKE
DRAWN BY 1 ROBERTS DATE 02/22/2015
E N E RGY
C.EADY
CPROJECT
ED BYNAGC. ER
LEGEND
10TOTAL URANIUM CONCENTRATION (pg/L)
ND NOT DETECTED ABOVE REPORTING LIMIT
NS NOT SAMPLED
HIGHEST CONCENTRATION AREA CONTOUR
NORTH CAROLINA 2L CONTOUR
INTERMEDIATE CONTOUR
APPROX. BACKGROUND CONTOUR
BACKGROUND MONITORING WELL
DOWNGRADIENT MONITORING WELL
SIDEGRADIENT MONITORING WELL
UPGRADIENT MONITORING WELL
0 WATER SUPPLY WELL
LANDFILL AREA
ASH BASIN WASTE BOUNDARY
-••- ASH BASIN COMPLIANCE BOUNDARY
DUKE ENERGY ROXBORO SITE
BOUNDARY
STREAM
NOTES:
THE NORTH CAROLINA 2L FOR TOTAL URANIUM IS 0.03 Ng/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 0.003 Ng/L.
DASHED ISOCONCENTRATION CONTOURS WHERE INFERRED.
NS = NOT SAMPLED
*VALUE CONSIDERED AN ANOMALY
t CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC BTV BUT WITHIN THE
BACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGIC SETTINGS
DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENT MIGRATION
PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THE ASH BASIN.
DATA MAY INCLUDE LAB -QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLE
NOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALID SAMPLE
RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) OR RESULTS THAT
INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEEN REMOVED FROM
DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROM MARCH 2O15 TO
JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27, 2017.
AERAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE
COORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-26
ISOCONCENTRATION MAP
TOTAL URANIUM IN BEDROCK GROUNDWATER
ROXBORO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
SEMORA, NORTH CAROLINA

V �
IN ,�•
�`+
1 •
J1.
'' ` 1 - u
■
1
PMW-3D
1.81 ■
4.39 ♦ -
101 D
JS � ABMW-sD #�
o.sss ` ■
�CCR-100D INDUSTRIAL LANDFILL I
NS -1 -
EXTENSION
IMPOUNDMENT
LCID LANDFILL _ - _ Ind
SFya,tqftl
Ar*'Aoff
� GPMW-2
� ` NNAWAYRD
MWA8D
♦ _ 0.983
1
1 .
LEGEND
10TOTAL VANADIUM CONCENTRATION (pg/L)
ND NOT DETECTED ABOVE REPORTING LIMIT
NS NOT SAMPLED
HIGHEST CONCENTRATION AREA CONTOUR
IMAC CONTOUR
INTERMEDIATE CONTOUR
APPROX. BACKGROUND CONTOUR
BACKGROUND MONITORING WELL
DOWNGRADIENT MONITORING WELL
SIDEGRADIENT MONITORING WELL
UPGRADIENT MONITORING WELL
WATER SUPPLY WELL
LANDFILL AREA
SASH BASIN WASTE BOUNDARY
—••—••- ASH BASIN COMPLIANCE BOUNDARY
DUKE ENERGY ROXBORO SITE
BOUNDARY
STREAM
NOTES:
THE INTERIM MAXIMUM ALLOWABLE CONCENTRATION (IMAC) FOR VANADIUM IS 0.3 Ng/L
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 30.2 Ng/L.
DASHED ISOCONCENTRATION CONTOURS WHERE INFERRED
NS = NOT SAMPLED
' VALUE CONSIDERED AN ANOMALY
t CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC BTV BUT WITHIN THE
BACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGIC SETTINGS
DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENT MIGRATION
PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THE ASH BASIN.
DATA MAY INCLUDE LAB -QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLE
NOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALID SAMPLE
RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) OR RESULTS THAT
INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEEN REMOVED FROM
DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROM MARCH 2O15 TO
JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27, 2017.
AERAL WAS COLLECTED ON JUNE 13, 2016.
' DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE
COORDINATE SYSTEM FIPS 3200 (NAD83/2011).
SCALE
,tipGRAPHIC
0 362.5 725 1,450 2,175 2,900
Feet
nTerra
148 RIVER STREET- SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PH/OWN E Se4 C201-9 099
DUKE
DRAWN BY 1 ROBERTSDATE 02/19/2015
ENERGY
C. EADY
CPROJECT
ED BYNAGC. ER
FIGURE 11-27
ISOCONCENTRATION MAP
VANADIUM IN TRANSITION ZONE GROUNDWATER
ROXBORO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
SEMORA, NORTH CAROLINA

i
•r-r/ •
' .1M
..1001
t� ■
�r•
'V-IDR .'
2.26
4rFy • +I�rrIII
sFyDRgRD
ERO-1004
ND
COOLING WATER
CCR-104BR
1 14.5
NS
GMW-11
5.57
ABMW-7BR
0.496
L LANDFILL
MW-16BRt
2.93 r DUNNAWAY RD
MW-10BRt
2.9
i
it
• • I MW-18E rr_` ND
■
i
♦ I �.vr♦
RO-1003
ii 1.6
■
■
■
■ I
/-3BR •
8 •i
3BR
5.3 IW-14BR
MW-28BR ND f
2.01 . r
t-105BR J
NS MW-29BR r
!7BR 1.24 I
03 CCR-112BR-BG
NS
CW-1 MW-30BR
21.4 0.3 RO-16
:5.5
=�N
RO-1012
MW-23BRR I
1.12
■ RO-1005
MW-20BRL ■ 6.1
0.318
r RO-1 R02014-RAW 5.1 5.1
� MW-24BR4- ■ 1.9 1 RO-1011
ND■
MW5-17BR A' 1 - 1.38 RO-1015
0.373 L RO-13 3.5
0.433 RO-11
10.6
RO-2 ND
■ RO-i03
RO8
ND 4.5 ,
r•
.err.
w
•.■ •
RO-1000
J5 0.6
DUKE
ENERGY
5.9 pi■�_.
RO-1013
3.8 -•_-
RO-1016
5.5
RO-1018
4�S 4.1
6
GRAPHIC SCALE
0 320 640 1,280 1, 920
Feet
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.sv "errac.rc.com
2,560
DRAWN BY. J. ROBERTS DATE: 03/15/2018
PROJECT MANAGER: C. EADY
CHECKED BY. C. EADY
LEGEND
10TOTAL VANADIUM CONCENTRATION (pg/L)
ND NOT DETECTED ABOVE REPORTING LIMIT
NS NOT SAMPLED
HIGHEST CONCENTRATION AREA CONTOUR
IMAC CONTOUR
INTERMEDIATE CONTOUR
APPROX. BACKGROUND CONTOUR
BACKGROUND MONITORING WELL
DOWNGRADIENT MONITORING WELL
SIDEGRADIENT MONITORING WELL
UPGRADIENT MONITORING WELL
O WATER SUPPLY WELL
LANDFILL AREA
ASH BASIN WASTE BOUNDARY
-••-••■ ASH BASIN COMPLIANCE BOUNDARY
DUKE ENERGY ROXBORO SITE
BOUNDARY
STREAM
NOTES:
THE INTERIM MAXIMUM ALLOWABLE CONCENTRATION (IMAC) FOR VANADIUM IS 0.3 Ng/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 2.49 Ng/L.
DASHED ISOCONCENTRATION CONTOURS WHERE INFERRED.
NS = NOT SAMPLED
VALUE CONSIDERED AN ANOMALY
t CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC BTV BUT WITHIN THE
BACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGIC SETTINGS.
DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENT MIGRATION
PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THE ASH BASIN.
DATA MAY INCLUDE LAB -QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLE NOTES
FOR QUALFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALID SAMPLE
RESULTS FOR EACH WELL. DATAWITH HIGH TURBIDITY(>10 NTU) OR RESULTS THAT
INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEEN REMOVED FROM
DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROM MARCH 2O15 TO
JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27, 2017.
AERAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE
COORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-28
ISOCONCENTRATION MAP
VANADIUM IN BEDROCK GROUNDWATER
ROXBORO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
SEMORA, NORTH CAROLINA