NC0003425_Roxboro Figures_20160801

Comprehensive Site Assessment Supplement 1 August 2016
Roxboro Steam Electric Plant
FIGURES
SynTerra
P: \Duke Energy Progress.1026\ 107. Roxboro Ash Basin GW Assessment Plan\ 19.EG_CSASUP\Final ROXBORO CSA Supplement
1 July 2016.docx

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SOURCE:
USGS TOPOGRAPHIC MAP OBTAINED FROM THE USGS MAP STORE AT cc
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ROXBORO STEAM ELECTRIC PLANT FIGURE 1-1
PERSON COUNTY SITE LOCATION MAP
DUKE ENERGY PROGRESS
GREENSBORO0 ROXBORO STEAM ELECTRIC PLANT
.RALE.GH 1700 DUNWAY RD
Terra GREENVILLE.
.GHARL� E SEMORA, NORTH CAROLINA
oyn. FAYETTEVILLE OLIVE HILL, NC QUADRANGLE
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA WILMINGTON DRAWN Br i. CHASTAIN DATE:07/12/201s GRAPHIC SCALE
PHONE [phone] PROJECT MANAGER: C. EADY CONTOUR INTERVAL: 10ft 1000 1000 2000
www.synterracorp.com LAYOUT: FIG 1-1 (USGS TOPO MAP) MAP DATE: 2013
IN FEET
07/28/2016 4:25 PM P:\Duke Energy Progress.1026\107. Roxboro Ash Basin GW Assessment Plan\19.EG_CSASUP\Figures\DE ROXBORO CSA SUP FIG 1-1 (USGS TOPO MAP).dwg

VIRGINIA VIRGINIA
..- .... —MAYO CREEK
HYCO
The information on this map was derived from digital databases at the NC Department of Transportation Website. Care was
taken in the creation of this map. SYNTERRA cannot accept any responsibility for errors, omissions, or positional accuracy.
There are no warranties, expressed or implied, including the warranty of merchantability or fitness for a particular purpose,
accomoanvino this Droduct. However. notification of anv errors will be aooreciated.
SATTERWHITE
BEREA
RIVER
GRAPHICSCALE
3 O6 FIGURE 1-2
IN MILES ROXBORO PLANT VICINITY MAP
148 RIVER STREET, SUITE 220 DUKE ENERGY PROGRESS
PHONE864-421—H99AROLINA29601
99ROXBORO STEAM ELECTRIC PLANT
www.synterracorp.com 1700 DUNNAWAY RD
.11111111loynTerra PROJECT
WCTMANA MANACHAGER:
DATE 07/13/2016 SENORA, NORTH CAROLINA
PROJECT MANAGER: C. EADY
LAYOUT: FIG 1-2 (VICINITY MAP
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ROXBORO LINED LANDFILL
' 7'1 ASH BASIN BOUNDARY
t>t H �� �� ��� COMPLIANCE BOUNDARY
a
HALF -MILE OFFSET FROM COMPLIANCE BOUNDARY
ILral DUKE ENERGY PROGRESS ROXBORO PLANT BOUNDARY
Specific Dissolved Bicarbonate Carbonate Chromium Total Dissolved Total Suspended
Analytical Parameter pH Temperature Conductance oxygen Turbidity Alkalinity Aluminum Antimony Arsenic Barium Beryllium Alkalinity Boron Cadmium Calcium Alkalinity Chloride (Hexavalent) Chromium Cobalt Copper Iran Lead Magnesium Mango nos Mercury Molybdenu Nickel Potassium Seleniu Sodium Strontiu Sulfate Thallium Solids Solids Vanadium Zinc
S.U. Deg C umhos/cm m9/1 NTUs mg/I ug/I ug/I I g/I ug/I ug/I mg/I ug/I ug/I mg/1 mg/1 mg/1 ug/l ug/I ug/I ug/I ug/I uI mg/I ug/I ug/I ug/I ug/I mg/I ug/I mg/I ug/I mg/1 ug/I mg/I mg/I ug/I ug/1
NC2L Standard 6.5-8.5 NE NE NE NE NE NE 1^ 10 700 4^ NE 700 2 NE NE 250 0.07^ 10 1^ 3000 300 15 NE 50 1 NE 100 NE 1 20 NE NE 250 0.2^ Soo NE 0.3^ 1000
Sample
Sample ID Collection Field Parameters Analytical Results
Date
RO-1 03/16/2015 6.9 16 505 4.01 <1 274 <50 <3 <10 3.62 <1 274 <100 <1 75.4 <1 39.4 <20 <10 <5 <10 <50 1.7 32.9 8.29 <0.2 <10 <10 1.62 2.39 22.9 390 51 <1 405 <5 2.84 14.7
RO-2 05/04/2015 6.6 17 640 NM <1 <5 <100 <5 <5 64.4 <2 <5 <50 <0.8 50.7 <5 24 0.11 <5 <5 39.1 <500 1.8 25.1 c5 <0.2 <5 <5 <0.5 <5 <0.5 <5 <8 <1 383 5.1 <10 87.4
RO-3 03/12/2015 6.3 15 542 5.4 <0.4 190 <50 <1 <1 65 <1 190 <500 <1 63 <5 47 <10 <1 <1 6.1 <50 <1 25 c5 <0.2 2.5 <2 5.1 <1 34 180 71 <1 410 <3.3 <5 16
RO-4 02/19/2015 6.8 13 400 4.72 <1 164 <50 <0.5 <2 66.1 <0.5 NA <50 <0.15 47.8 NA 17 <5 2.69 <1 2.27 228 <0.5 10.8 144 <0.2 <2 1.35 2.75 <2 16.4 260 7 <0.5 267 <2.5 1.38 19.6
RO-7 08/17/2015 6.2 22 261 4.12 <1 111 <10 <0.5 <0.5 67.8 <0.2 111 <5 <0.08 30 <5 19.4 0.57 6.2 <0.5 10.1 53.8 0.3 10.7 29.4 <0.2 <0.5 1.9 1.96 <0.5 16.3 268 7.1 <0.1 200 <2.5 9.9 40.7
RO-8 04/27/2015 6.7 13 594 2.2 <1 178 <10 <0.5 <0.5 51 <0.2 178 <5 <0.08 59.7 <5 44.2 0.19 <0.5 <0.5 25.4 <50 40 22.4 1.9 <0.2 0.74 <0.5 4.31 <0.5 18.4 255 29.2 <0.1 366 <2.5 4.5 40.9
RO-10-1 05/04/2015 6.5 22 184 3.8 1.5 <5 <100 <5 <5 300 <2 <5 <50 <0.8 <0.4 <5 335 0.062 <5 <5 <10 <500 <1 61.2 <5 <0.2 <5 <5 6.46 <5 59.8 936 <2 <1 999 <2.5 <10 <50
RO-10-2 05/04/2015 6.7 19 631 0.61 6.2 <5 155 <5 <5 <3 <2 <5 <50 <0.8 66.6 <5 30.3 <0.03 <5 <5 <10 <500 1.7 21.9 <5 <0.2 <5 <5 <0.5 <5 <0.5 <5 27 <1 369 7.8 <10 <50
RO-11 08/17/2015 6.4 23 470 3.42 <1 196 <10 <0.5 <0.5 125 <0.2 196 <5 <0.08 43.8 <5 31.2 1.2 1.7 <0.5 19.5 <50 2.3 25.7 1.5 <0.2 2 0.56 3.54 <0.5 25.3 236 31.1 <0.1 326 <2.5 10.6 36.3
RO-12 08/17/2015 6.8 21 662 0.89 8.9 286 <10 <0.5 <0.5 67.1 <0.2 286 6.1 <0.08 84.2 <5 26.7 <0.03 <0.5 <0.5 1 1.3 1100 0.2 28.2 494 <0.2 5.9 <0.5 5.9 <0.5 36.5 326 71.8 <0.1 463 <2.5
RO-13 08/17/2015 6.0 23 145 5.07 <3 63.3 <10 <0.5 <0.5 30.9 <0.2 63.3 <5 <0.08 14.7 <5 8.4 0.92 1.3 <0.5 1 93.2 <50 1.3 5.25 3.7 <0.2 <0.5 <0.5 1.24 <0.5 9.99 166 2.6 <0.1 138 <2.5 3.1 51.1
RO-14 08/18/2015 7.1 24 647 0.95 7.4 241 <10 <0.5 <0.5 48.6 <0.2 241 <5 <0.08 74 <5 31 <0.03 <0.5 <0.5 7.6 827 0.8 27 5.9 <0.2 0.52 <0.5 6.64 1.1 16.5 244 52.3 <0.1 382 <2.6 5.6 29.9
RO-15 10/22/2011 7.0 18 799 2.14 <1 <5 12.7 <0.5 <0.5 59 <0.2 <5 <5 <0.08 50.7 <5 44.5 0.83 1.3 <0.5 13.4 <50 0.6 <0.05 0.62 <0.2 4.2 0.61 <0.05 <0.5 64.7 190 47.1 <0.1 456 <2.5 16.1 <5
RO-16 10/22/2015 6.1 17.2 18S.4 2.4 <1 S2.2 <10 <0.5 <0.5 18.7 <0.2 52.2 <5 <0.08 <0.04 <5 7.8 1.2 1.4 <0.5 7.8 150 0.6 4.24 0.98 <0.2 <0.5 1.4 <0.05 <0.5 <0.05 121 <2 <0.1 <25 <2.5 5.5 <5
Noes: 1,100 550 GOAPHICSC141L0% 2,200 FIGURE 1-4
O - 811d 1,191,119 d concentration mdlrates exceetlance pf the 15A NCAC 02L ii-dam, App-dix 2, April 1, 2013, SU = Rp -d IN FEET
.1- N C D E Q WATER SUPPLY SAMPLE
-1 oe Maximum Ailvwama mNceNvanone (I-) pr the 1sA Nuc 02L-dam, Appe N 1, April, 1, 2013, amh0s/cm = mm,p mhp: per centimeter
<=wncentrat Mat detd-t-b. the reporting limit NN=Nephel.-cTurbidity Unit 148 RIVER STREET SUITE 220 LOCATIONS AND DATA SUMMARY
^ = NC DHHS Health Screening Level. 19/L = 1111191.1 per liter
PHONE[phone]AROLINA29601 ROXBORO STEAM ELECTRIC PLANT
NE =Nat establishetl ug/I = microgrsms per liter
Deg C =Degrees Celxlus `\w`\ / .M. P �.r/.(.��,
FRO USDA
RCSGE SPATIAAPHVOBTAINED
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FROM USDA NRCS GEOSPATIAL DATA GATEWAY(https://gdg.scegov.usda.gov/GDGOrdecaspx), s DRAWN BY: A. ROBINSON DATE: 07/26/2016 , NORTH CAROLINA
DRAWING HAS BEEN SET WITH A PROJECTION PROJECT MANAGER: C. EADY
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NOTES:
FIGURE 1-5
ISOCONCENTRATION MAP
ARSENIC IN ASH PORE WATER
ROXBORO STEAM ELECTRIC PLANT
SEMORA, NORTH CAROLINA

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PHONE [phone] ROXBORO STEAM ELECTRIC PLANT
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NOTES:
1,500 FIGURE 1-7
ISOCONCENTRATION MAP
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ROXBORO STEAM ELECTRIC PLANT
SEMORA, NORTH CAROLINA
ym C�� DRAWN BY: B. YOUNG DATE: 07/27/2016
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PHONE [phone]
W W W.SVnterraCOrp.Com
DRAWN BY: I YOUNG DATE: 01/27/2016
PROJECT MANAGER: C. EADY
CHECKED BY: C. EADY
NOTES:
FIGURE 1-8
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ROXBORO STEAM ELECTRIC PLANT
SEMORA, NORTH CAROLINA

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NOTES:
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GRAPHIC SCALE
1,500 FIGURE 1-9
IN FEET ISOCONCENTRATION MAP
GRE RIVER STRSOUEET,
CAR220
29601 BORON IN TRANSITION ZONE GROUNDWATER
PHONE [phone] ROXBORO STEAM ELECTRIC PLANT
WWWs n erra�or .�om SEMORA, NORTH CAROLINA
DRAWN BY: B. YOUNG DATE: 07/27/2016
PROJECT MANAGER: C. EADY
CHECKED BY: C. EADY

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♦� / 1390 1 1 w o
IL
• ABMW-4BR °J Q�
'
•. CW-21D MW-5BR 1 ✓ MW-23BR ` MW 20BRL:.I J
1 ABMW-7BRL %�. C-)ABMW 6BR 245 .\ rF� ND:
�� 1966 EAST �.
+4 x I
MW 9BR�• ABMW-3BR GMW-7 ASH BASIN . MW-24BR a ay;
M
1`
RO-4
/ / MW 2BR , ROD13
GMW=9 " MW-17BR /
MW-8BR ABMW-3BRL GMW=8_
/ Apo`47
ABMW-1 BR v� -� • MW-25BR / RO-7 / �®
1973 WEST 255 ko 700 . �' •:�,°_ .
1 ASH BASIN a� . MW-13BR
A
1 ABMW-2BR 1' MW-16BR-
Vr ♦ MW-19BR
MW-7BR �� DUNNAWAYRD
• 4 ri•��. �e1�'rl r r . {♦♦ RO-15
�4` r t ¢ MW=10BR RO-11
.: RO-2
y�
CW 3D 'Fe:" \ RR-3,. RO-12.
r NU 6:1
MW 26BR
LEGEND
1
NO
NS
NOTES:
a .N
Je-
BG-1BR `♦1 MW-4BRL
RO-10-1 �♦ \ MW-4BR
'STATE HWy* 41 ` "
,ND MW-15BR... - —''
GRAPHIC SCALE
750 375 0 750 1.500 FIGURE 1-10
' r { \RO-10-2 MW=18BR=-T IN FEET ISOCONCENTRATION MAP
148 RIVER STREET, SUITE 220 BORON IN BEDROCK GROUNDWATER
GREENVILLE,SOUTH CARouNA29601 ROXBORO STEAM ELECTRIC PLANT
PHONE 99
tsynterracalom SEMORA, NORTH CAROLINA
rl c'�
DATE. / / 016
� ^ www s n erracor .com
_m C DRAWN BY. B. YOUNG 07 27 2
+, ,�'®r . . PROJECT MANAGER: C. EADY
CHECKED BY: C. EADY

Mr
4 -
LAKE � ti • • � ,
. .Y
STATE RD 1316 H -
ORE'RD
fig`' � ; ,• S- � i% - i
s
,
Ti.. ,$r,:.k.. GYPSUM • -.r
PAD � # ' • � , ,....-. s
' .,
HEATED WATER ... o
DISCHARGE POND
11
t'f -NPDES ♦� •�, n •�
d AB Q� MW 5 T 1 A .:.F; �+
OUTFALLA.,
- • NU° 1 •�� _ - LEGEND
*w 1966 EAST ----: ABMW-4 • 1 CHROMIUM (VI) CONCENTRATION (Ng/L)
" . .� `'! . �' —• ASH BASIN _ 'i ; ; NO NOT DETECTED ABOVE REPORTING LIMIT
e NOT SAMPLED
NS
�,
'� — CHROMIUM (VI) CONTOUR
a .. \
ABMW 1 MONITORING WELL
..
/ ---' • �, ,v _ _ L _ _ _ . ROXBORO LINED LANDFILL
9� ♦' �� ` ® : ROXBORO UNLINED LANDFILL
1973 WEST
ASH BASIN
�o �. �'
,# ,'. ' � � ®®"� � . ASH BASIN BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
F 1 ABMW-2 • 1 ��. <--rJ"4�x.-----
! DUKE ENERGY PROGRESS ROXBORO PLANT
%� �' — -" BOUNDARY
fir`' 1 DUNNAWAYRD
xy�; ' ♦ NOTES:
ooCONCENTRATIONS SHOWN REFLECT MOST RECENT ANALYTICAL
DATA COLLECTED FROM DECEMBER 2015, JANUARY 2016, APRIL
s• s ' 1 l 1 201 AND JUNE 201 6 A 6S APPLICABLE A
h- E
. + .
• ,•� �.. THE NORTH CAROLINA DEPARTMENT OF HEALTH AND HUMAN
SERVICES HEALTH SCREENING LEVEL FOR CHROMIUM (VI) IS 0.07
*" ♦ • Ng/L. NC DHHS MEMORANDUM, NOVEMBER 4, 2015.
'. s 1� F a' • �, 2014 AERIAL ORTHOPHOTOGRAPHY OBTAINED FROM USDA NRCS
` ,/
<jA� -' � GEOSPATIAL DATA GATEWAY
Y
STA EHIN7 SENORA RDy
4
(https://gdg.sc.egov.usda.gov/GDGOrder.aspx).
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA
_ STATE PLANE COORDINATE SYSTEM FIPS 3200 (NAD83/2011).
GRAPHIC SCALE
750 375 0 750 1,500
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
ww w. sv nt e rra C 0 r Q. C 0 m
DRAWN BY: B. YOUNG DATE: 07/27/2016
PROJECT MANAGER: C. EADY
CHECKED BY: C. EADY
FIGURE 1-11
ISOCONCENTRATION MAP
CHROMIUM (VI) IN ASH PORE WATER
ROXBORO STEAM ELECTRIC PLANT
SEMORA, NORTH CAROLINA

4
0
P
F
STATE RD 1316 —.-t
,7 r -.*" I - . i� " —
f *'4 -*
7
,� . NS
1
• GYPSUM
4 O -
HEATED WATER "
�MW-22D.
DISCHARGE POND�•
NPDES
a OUTFACE \ ABMW-51D •1 1 ' w
0:07-4 1 1966 EAST • �. _
' P ASH BASIN /
I 4f iMW-5D t ,
1 1973 WEST
ASH BASIN0
w1 .
I
3� STATE RD 1377
{31
00
q;.
F
DUNNAWAY RD
. . Will
a , 1 • 10w ' BG-1 1 CW-4
-. •'
r�
MW-1 8D 10
ynTerra
LEGEND
1 CHROMIUM (VI) CONCENTRATION (Ng/L)
NO NOT DETECTED ABOVE REPORTING LIMIT
NS NOT SAMPLED
CHROMIUM (VI) CONTOUR
MONITORING WELL
L _ _ _ _' ROXBORO LINED LANDFILL
ROXBORO UNLINED LANDFILL
ASH BASIN BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
DUKE ENERGY PROGRESS ROXBORO PLANT
— -"BOUNDARY
NOTES:
CONCENTRATIONS SHOWN REFLECT MOST RECENT ANALYTICAL
DATA COLLECTED FROM DECEMBER 2015, JANUARY 2016, APRIL
2016, AND JUNE 2016, AS APPLICABLE.
THE NORTH CAROLINA DEPARTMENT OF HEALTH AND HUMAN
SERVICES HEALTH SCREENING LEVEL FOR CHROMIUM (VI) IS 0.07
Ng/L. NC DHHS MEMORANDUM, NOVEMBER 4, 2015.
2014 AERIAL ORTHOPHOTOGRAPHY OBTAINED FROM USDA NRCS
GEOSPATIAL DATA GATEWAY
(htt Ps'// d sce ovusda ov/GDGOrderas x)
�
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA
r
STATE PLANE COORDINATE SYSTEM FIPS 3200 (NAD83/2011).
RAPHICSCE
FIGURE 1-12
750 375 050 1,500
ISOCONCENTRATION MAP
IN FEET
CHROMIUM (VI) IN TRANSITION ZONE
1R8RIVERSTREETHUITE2 A2s6o1
GROUNDWATER
PHONE [phone]
www. n erracor . om
ROXBORO STEAM ELECTRIC PLANT
SEMORA NORTH CAROLINA
DATE:07/27/2016
PRAWNBM MANAGER:
PROJECT MANAGER: C. EADY
CHECKED BY: C. EADY
PADuke Enerqv Progress.1026\00 GIB BASE DATA\Roxboro\Map
Docs\CSA Supplement\Roxboro - Isoconcentration Maps Ash Transition.mxd

4
u}a
STATE RD 1316 -.-+
�6f dv + l is
r. •.fir ROM1��.
o: ♦'
GYPSUM \ MW 36R"'
PAD
HEATED WATER a �♦ MW BR-22a
DISCHARGE POND- `�- ♦ ABMW-7BR 0:088'' -
NPDES d ,♦� . - - - - - - CW_1 ^ RO-16 /
r a"' V)
OUTFALL • 1 Lu i .
ti MW-5BR
MW-20BRL
1966 EAST
Stu \ i ASH BASIN .-ABMW 46R MW-23BR. /
r
. tiv ABMW-6BR t 1
I` MW-2BR-- --- ; MW 24BR RO 13
ABMW-1BR [
w
1973 WEST v� -♦I MW-25BR I R0-7d
ASH BASIN o r -
MW-13BR - -
�'• I l-
1 ABMW-2BR 1 MW-16BR• RO-8
i .
' �♦ / MW-19BR d
DUNNAWAYRD / RO-11 ;
RO-15
A
r; RO-10-1
TE
#HWY57
STAMW-15BR� _ . —�
� • ` GRAPHIC SCALE
750 375 0 750
-`
10
-ymTerra
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
LEGEND
1 CHROMIUM (VI) CONCENTRATION (Ng/L)
ND NOT DETECTED ABOVE REPORTING LIMIT
NS NOT SAMPLED
— CHROMIUM (VI) CONTOUR
'a MONITORING WELL
WATER SUPPLY WELL
ROXBORO LINED LANDFILL
ROXBORO UNLINED LANDFILL
ASH BASIN BOUNDARY
L : !ASH BASIN COMPLIANCE BOUNDARY
DUKE ENERGY PROGRESS ROXBORO PLANT
— -'BOUNDARY
NOTES:
CONCENTRATIONS SHOWN REFLECT MOST RECENT ANALYTICAL
DATA COLLECTED FROM DECEMBER 2015, JANUARY 2016, APRIL
2016, AND JUNE 2016, AS APPLICABLE.
THE NORTH CAROLINA DEPARTMENT OF HEALTH AND HUMAN
SERVICES HEALTH SCREENING LEVEL FOR CHROMIUM (VI) IS 0.07
Ng/L. NC DHHS MEMORANDUM, NOVEMBER 4, 2015.
2014 AERIAL ORTHOPHOTOGRAPHY OBTAINED FROM USDA NRCS
GEOSPATIAL DATA GATEWAY
(https://gdg.sc.egov.usda.gov/GDGOrder.aspx).
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA
STATE PLANE COORDINATE SYSTEM FIPS 3200 (NAD83/2011).
WATER SUPPLY WELL SAMPLED BY NCDEO BETWEEN MAY 2015 AND
SEPTEMBER 2015.
1,500 FIGURE 1-13
� ISOCONCENTRATION MAP
CHROMIUM (VI) IN BEDROCK GROUNDWATER
ROXBORO STEAM ELECTRIC PLANT
SEMORA, NORTH CAROLINA
DRAWN BY: B. YOUNG DATE: 07/27/2016
PROJECT MANAGER: C. EADY
CHECKED BY: C. EADY

W,
4
N.4i ► •+
aq �
e. �
.a_.z • c `, y.'k+ • STATERD1316 - . H ORE,RD
s v '
GYPSUM
PAD � �
HEATED WATER ABMW-5 - �♦ ; o
DISCHARGE POND y. = i_' `ND
ABMW-7 ,
�. . • ''� ND 1 kw
1966 EAST
ASH BASIN ='ABMW 4
- k
1
\ ABMW 6 _
ABMW-3
Air
49
ABMW-1
i , # v .� 4. •, 1973 WEST
ASH BASIN �o r -
r 1 ABMW-2-
tz4 ♦%
DUNNAWAYRD
t + �
g
1 1�"
t 'j ♦
c ♦
STATE HW 57 SEMORA RD
LEGEND
`
1
NO
5
NS
..........
GRAPHIC SCALE
750 375 0 750 1,500
IN FEET
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PITON E 864-421-9999
s n erracor com
�nTerra
DRAWN
DRAWN BY. B YOUNG DATE: 07/27/2016
PROJECT MANAGER: C. EADY
CHECKED BY: C. EADY
NOTES:
FIGURE 1-14
ISOCONCENTRATION MAP
CHROMIUM IN ASH PORE WATER
ROXBORO STEAM ELECTRIC PLANT
SEMORA, NORTH CAROLINA

4 -
{ ''U'�, HYCO •
STATE RD "'a -
�1
w .
r
aPL `a MW-14D
• ., Ns
t� � iy,y�'
GYPSUM
PAD
� � f
HEATED WATER i GMW-6 \ MW-22D e
DISCHARGE POND ND-
t\ MW-6D \ ABMW-5DLu
. 1 1 e
MW 5D 1 1966 EASTI ' �. _
- ASH BASIN /
-mom m
1973 WEST J'� R r
ASH BASIN 'A
1 "j�j I •t
,F { ry•, �DUNNAWAYRD
I --
CW 310
t
� BG-1 1 CW-4
`► ® . >. -A A
'STATE t
a i
HWY57 SEMORARD
•• -t.. _ MW-18D
."
-ynTerra
19 u
LEGEND
o-.
ND
#�5
NS
of
i
6`
1�
NOTES:
GRAPHIC SCALE
750 375 0 750 1,500
1148 RIVER STREET, SUITE 220 I
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
DRAWN BY: B. YOUNG DATE: 07/27/2016
PROJECT MANAGER: C. EADY
CHECKED BY: C. EADY
FIGURE 1-15
ISOCONCENTRATION MAP
CHROMIUM IN TRANSITION ZONE
GROUNDWATER
ROXBORO STEAM ELECTRIC PLANT
SEMORA, NORTH CAROLINA

A
r -
� .. k � � 1 4•a {�. � it .i�•� ��J Yr 4 e ry r
a'
a i •, c 4 �' k . • :_ 0 STATE RD 1316
,
4
i
`RO-1
oo
GYPSUM \ MW 36R'- �, :•
s a♦ a= v,1� ,ray'8 ;' -� 1;: _MW-22BR PAD �♦
� - � •` .MW=1BR aQ
,. -GMW-1'0• ♦. — y F
HEATED WATER �. �.� W-11.MW-6BR� ABMW-7BR GM'D- 6W-1
R6-16/ :' LEGEND
iABMW 7BRL �� 1 En i
Lu
Lu
CW 2D MW 5BR JD ! .`♦ _ rj
ABMW 6BR MW-20BRL ND
.ABMW-4BR MW 23BR�
4z
1966 EAST °, NS
a 1 MW 9BR ASH BASIN ; W'
GMW-7 1
ABMW-3BRL ■ M24BR_ ,
►�'=
•.. MW-2BR ---- iVL)
ABMW-3BR
/
GMW 8 GMW--9 _1 - 1. ►��'
,
MW-8BR ABMW-1 BR _ /°; -� ��
--------
W,:
'A 0 r \" R
1973 WEST
ai .,t" 4 N .� �4,', •� ASH BASIN o r..*
MW-13BR
MW-17BR
ABMW-2BR 1♦ MW-16BR- /
_ <z¢ , �} xt . ♦ — MW-19BR a
♦ .
MW 7BR �DUNNAWAYRD
� RO-2
4 If*
O 3
r e:
` MW-26BR RO-12
t BG-1BR `� MW-4BRL �` k RO-11
j♦ 1
RO-10-1 �MW-4BR
'STATE#� ,,ND
HWy '� .�
57 , MW-15BR...• —.. •.
RO-15
BRA
' r \ RO-10-2 SF �, ♦ t
•
--ynTerra
, � L
I�
GRAPHIC SCALE
750 375 0 750 1,500
1148 RIVER STREET, SUITE 220 I
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
DRAWN BY: B. YOUNG DATE: 07/27/2016
PROJECT MANAGER: C. EADY
CHECKED BY: C. EADY
NOTES:
FIGURE 1-16
ISOCONCENTRATION MAP
CHROMIUM IN BEDROCK GROUNDWATER
ROXBORO STEAM ELECTRIC PLANT
SEMORA, NORTH CAROLINA

• _ +''Y'4 -: :� ry�4y4a 9rra.FZr11Ta�,,,,y4 tr," ��,� - � a,�..
-
+ l , fit` � �•� 1 •,
-
Y
� a
p77,
-
r =
�Y
r1 •
STATE RD 1316
^+yyam� ',}���t`r,,,,,,..,, ; •' � ;
kL'� 64 4
+
4
s
.' � GYPSUM
4� , PAD
;ice �� . ♦►...
HEATED WATER ,ABMW-S-.
DISCHARGE POND , 1.08
3 ABMW-3 • ABMW-7 y
ND • _ w
' 1966 EAST
♦ 1
ASH BASIN
a Ur
ABMW-6 ABMW 4
op
.� ABMW-1 I i
ND
. r
• 1-...
'Pk ;
47i1r.��4l.
., a 1973 WESTo
ASH BASIN
�% -
`' # • f 6 , DUNNAINAY RD
00
c.. •- ` "
'STAT
EH w
57 SEMOR pRD
p
GRAPHIC SCALE
750 375 0 750 1,500
LEGEND
`
1
NO
5
NS
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.svnte rra c o rp. c o m
DRAWN BY: B. YOUNG DATE: 07/27/2016
PROJECT MANAGER: C. EADY
CHECKED BY: C. EADY
NOTES:
FIGURE 1-17
ISOCONCENTRATION MAP
COBALT IN ASH PORE WATER
ROXBORO STEAM ELECTRIC PLANT
SEMORA, NORTH CAROLINA

Wr
4 -
{ 'U'�, HYCO ♦
STATE RD "'a -
1OR RD
w '
s
•MWf2*2D �
,aw�`i . I . NS
T
;d.� �°�� '•,,. r`�i+� t �,•...r.: ` GYPSUM
id
PAD !
`y�Y�iF-• ._rF i.h.:...:L ,:.... a '1� .. ♦ ♦ I • /o E
rl
HEATED WATER a �! fA �♦ , o
DISCHARGE POND
t� MW-6D \ ABMW-5D 1 1
..
N
MW-5D 1 1966 EAST �� � ' �. _°: LEGEND
- 1 ASH BASIN e v 1
iA a
�' .• I 1 �` ND
1
CW_2 \ CW-5 r 'r A , e �`#° NS
Ado
-mom m
,
1 1973 WEST —
a. • ASH BASIN v'A .
.
k 1 ♦ 1 rI'
DUNNAWAYRD > �
NOTES:
tt ._
11 loll
41
• f 1
.. ... �y
J BG-1
WWY•• y !
i
'STATE !
5a7 SEMORARDA�l
-.• MW-15D .. -
.7
MW-18D
All
a /
Terra
1.
/9 u
GRAPHIC SCALE
750 375 0 750 1,500
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
W W W.SVnterraCOrp.Com
DRAWN BY: I YOUNG DATE: 07/27/2016
PROJECT MANAGER: C. EADY
CHECKED BY: C. EADY
FIGURE 1-18
ISOCONCENTRATION MAP
COBALT IN TRANSITION ZONE GROUNDWATER
ROXBORO STEAM ELECTRIC PLANT
SEMORA, NORTH CAROLINA

%fir 1 i
r -
A
� .. k � � 1 4•a � it .i�•� ��J Yr 4 e ry r
!G• r x' I KE L e� ♦t +
STATE RD 1316
.c F} irr � � S r �,. �-• of i ' ` _
zl
w
h� r•- r ram `RO-�•' MW 3BR
10
s
- sr i n x "'. of _ _ _
•n1 ' 4 Ml 14BR
4r ?r1? s#55i °,z?,� ♦� GYPSUM 1
a
PAD I ..
y
HEATED WATER ♦I "' " 6.1�! s• ,
DISCHARGE POND .I ABMW-7BR
r W-0
k� MW-6BR i♦I Lu
� M1BR n1 U°1 RO 16 /Q ,
a 3.37 1 M +u Q
CW-2D
MW-9BR MW-20BRL.�
1966 EAST ABMW-7BRL
MW-5BR /
ASH BASIN ND i MW-23B ° j
�_ ABMW-4BR
AB 6BR
MW ND 1 . MW-24BR 1
\
*�lh r. r ♦ �'' 1 ND IN RO 4
„ �.--------J RO-13 a g
I'A� ABMW-3BR BMW-2BR -_ �.� MW-17BR7
Y
1 10 '
:.�. ,G2y MW 13BR; _ RO.7
�rf,fir'., Y♦�• MW-25BR/ .,
9
-3BRL r
1 ABMW-1BRABMW ���
1973 WEST �• I g '� z
ASH BASIN . 1 MW-16BR' r
MW-19BR RO 11
1 ` + c s �, . -/I RO 8
MW-7BR �STATERD /
ri ABMW-2BR / e r` 1377
� � RO-15
e r a
a
9
fS
RO-2 / 3
MW-26BR
. /. MW-10BR
100
1 ♦ /
,.,
] '1 MW-4BRL
V- . 1
LEGEND
1
NO
NS
/
L----
NOTES:
RO-10-1 % MW-4BR
'STATE
HW ,.;ram ND
T- MW15BR...•_.•
` � •� � •
0 RAPHIC SCALE
750 375 750 1,500 FIGURE 1-19
' M8BR
F. { RO-10-2 sFM �.` t IN FEET ISOCONCENTRATION MAP
W°1
148RIVERSTREET,SUITE22o COBALT IN BEDROCK GROUNDWATER
ate°' '$'' �RARO ` GREENVILLE,SOUTH CARouNA29601 ROXBORO STEAM ELECTRIC PLANT
PHONE [phone]
L- ^ M WW: 07/27/201W.S n erra�or .�om SEMORA, NORTH CAROLINA
//��/��C�� DRAWN BY: B. YOUNG DATE6
-- ' r ■ ■ PROJECT MANAGER: C. EADY
® CHECKED BY: C. EADY
.sr . i :: o` i �•fi•. 3�dRL'°{r'.:V'f �.. ,: •.�4`:,�n�`t._�]^o':d.FY'�b i'�[:+'ri - ..

I KE L e� ♦t +
•
a'
a i ♦, c 4 �' k. STATE RD 1316
b 4
s
GYPSUM
PAD
HEATED WATER a ABMW-5
— �..
DISCHARGE POND , 1620
ABMW-7
ABMW-6 1966 EAST/
*w T 00
ASH BASIN
'15900 ,
,. " �.� • •ABMW-3
�... ABMW-4
4t
.� I&Nlw-le�Qp
�I 39
'ODo1973 WEST ~,.� �� I . i • i -I
ASH BASIN
lo
try
♦ i OF \
£ AY
DUNNAW RD
,I 1
+ .4 ABMW-2
IL
mo
c .
'STAT
REHWf57 SEMOARD
. -
"
LEGEND
`
1
ND
5
NS
GRAPHIC SCALE
750 375 0 750 1,500
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.svnte rra c o rp. c o m
DRAWN BY: B. YOUNG DATE: 07/27/2016
PROJECT MANAGER: C. EADY
CHECKED BY: C. EADY
s
NOTES:
FIGURE 1-20
ISOCONCENTRATION MAP
IRON IN ASH PORE WATER
ROXBORO STEAM ELECTRIC PLANT
SEMORA, NORTH CAROLINA

Wr
4 -
STATE RD "'a -
1�`r}� '+ SWORERD
w -
e • •
MW-221D ; MW-14D
lo320 • NS
T
t�a�--�.� a.� ,�� 'ti`,- i+� t � „•..r.. ,' GYPSUM
sa'• a =. _ w,� , , ^ay8,,' 4� ; PAD J
I♦
� fV�GIVIW96-
HEATED WATER a ♦ \ V ,
DISCHARGE POND "�' ♦I �� �"
�- J
fl= c MW-6D ABMW-51D r� 1 e w:
' Mw 5D 30000� �'. L G E N D E
1966 EAST
dk _ ' _ • ASH BASIN
• \ I . 4 , e ND
r \ 1
.: W 5
\ ;NS
300, r —_
�vo
1973 WEST
ASH BASIN 'A +� _♦'
DUNNAWAYRD
NOTES:
tt ._
- f 1
r
t _
c ..
i ` ♦ ` _ J
7 I d0
� �. •',* �- ` �§ �,. 0 � ,. sue►
t •�.9 �•
'STATE
HWf57 SEMOR
r. # ra{a�Acsr; a 1760 MW-15D
4
.7
•J}tY�lf Bey i _I - -
MW-18D
-ymTerra
GRAPHIC SCALE
750 375 0 750 1,500
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
W W W.synte rra Corp. com
DRAWN BY: B. YOUNG DATE: 07/27/2016
PROJECT MANAGER: C. EADY
CHECKED BY: C. EADY
FIGURE 1-21
ISOCONCENTRATION MAP
IRON IN TRANSITION ZONE GROUNDWATER
ROXBORO STEAM ELECTRIC PLANT
SEMORA, NORTH CAROLINA

4
,
LAKE
k STATE RD 1316 -
1SHORE'RD
Alf
GYP UM \ MW 36R:°
. r$; 1: ; PADS l
MW-6BR GMW-10�� _MW-22BR MW-1BIR Q
5 9 l
• -+—wan.. , _ — L • V
HEATED WATER ♦� • � ,
-- ♦ ABMW 7BR
DISCHARGE POND , p /
- 86-6• - l•EW-1 p
MW-5BR RO-16
594 °/ _ �I 2� e w �
CW-2D ABMW-7BRL
`{ NO 1 ABMW-6BR —253. �j/ ' 429 MW-20BRL
MW-9BR i�; 4 167 ' 1
10000� 1966 EAST
�' •' • •ABMW-3BRL ASH BASIN ; MW=17BR MW-24BR
ABMW-4BR GMW 7 694 e
ABMW-3BR 18600
142--------- ��. RO-13 �
GMW-8
s I
MW-8BR r� 69.7 GMW-9 `
O 10p00 I .. 22 P ®
r ..
� M ABMW-113R MW-2BR R4/ � --�'�.�� O-
1740
e 1973 WEST v� t. MW-25BR o
ASH BASIN ; `_ • MW-13BR . ®,
1 • �'�� i MW-16BR♦
ABMW-2BR �% / MW-19BRR0 8
MW-7BR g �� DUNNAWAYRD / RO-15
{ a +;.y' R{.j., ♦ -
¢ MVV=10BR o RO-11
•1 `� �= RO-2 /
t RO-3
CW 3D ' ;• �
LEGEND
1
NO
NS
fr
t
..
BG-1BR
♦..
,1 MW-4BRL
�•
. 1
;�
SEMO �►s
RO-10-1
��
%
RARD STATE�' S�.,j3 r •E�1Np
HW
•y Y57 N
��`
�♦
100 `� MW 4BR
+
,
ram.,=:..._��•
750 375 o50 RAPHICSCE 1.500
MW715BR MW-18BR
i {'
IN FEET
..
.,
..+.
ai r
�-?':..
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
$e�aco19co9m
_•
k
,
L��, k - a
wwwsE
S.
¢� sN-nTerra
'y�f�;c^-�-
07272
DRAWN BY: B YOUNG DATE. / / 016
PROJECT MANAGER: C. EADY
CHECKED BY: C. EADY
On, 7x
I NOTES:
FIGURE 1-22
ISOCONCENTRATION MAP
IRON IN BEDROCK GROUNDWATER
ROXBORO STEAM ELECTRIC PLANT
SEMORA, NORTH CAROLINA

lGa r x' IAKEL
.r v
. a_ .z • c `, y . k+ 1 -0 STATE RD 1316
a � �
HEATED WATER
DISCHARGE PON.
�I
GYPSUM
PAD
ki^
11 .►. � �� �Q
- ABMW-5 ,
�- ABMW-7• `
ABMW-6
w
ASH BASIN
•.�
IE&MDw-1 ` ABMW-3
1973 WEST l
ASH BASIN
3 " ,
ABMW-2 f
t J ,
V' .-� ♦�
'srarE
HW 57 SEMORARD ' Ad-
# '. • 3 i ,
ABMW-4 e 1
q,
DUNNAWAY RD
"k,
•
.1
n
GRAPHIC SCALE
750 375 0 750 1,500
LEGEND
`
1
�.;
ND
5
NS
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
WWw synte rrac orp. com
DRAWN BY: B. YOUNG DATE: 07/27/2016
PROJECT MANAGER: C. EADY
CHECKED BY: C. EADY
NOTES:
FIGURE 1-23
ISOCONCENTRATION MAP
MANGANESE IN ASH PORE WATER
ROXBORO STEAM ELECTRIC PLANT
SEMORA, NORTH CAROLINA

40
+l
w
'� a,Pr �> ia� 4�'r�?;" "+-.' GIs'' • • ` ♦ _ rMW-14D..
GYPSUM
PAD
Or
HEATED
GMW-6
WATER
DISCHARGE POND
•� - MW-22D'
�ABMW 5D 1
3'
s, MW-6D
10 1
��
r ♦
Wr
I wr
Xil
�
#
�k • • _ ♦
\ CW-5
\
1966 EAST r
, ASH BASIN I
1
�'
CW2
,
1973 WEST iP�A'
a'i s • ASH BASIN vA • e
pt I I Now
DUNNAWAYRD
t � �
x 4 ;
t'{ CW-3 I + E.
V •� ( BG 1 CW-4 1
��
�► ` /
'STATEHWy57 SEMORARD
r + MW-15D
p
4
its -�
w f� A. Terra
.. ,{-,fir y �1 yp ,
Jr • ` x-3, ky �"4 •'. c'P&nP. �- . �.'dY I �"r h.. y 0.?, 4..
LEGEND
1
ND
#5
NS
NOTES:
GRAPHIC SCALE
750 375 0 750 1,500
1148 RIVER STREET, SUITE 220 I
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
DRAWN BY. B. YOUNG DATE: 07/27/2016
PROJECT MANAGER: C. EADY
CHECKED BY. C. EADY
FIGURE 1-24
ISOCONCENTRATION MAP
MANGANESE IN TRANSITION ZONE
GROUNDWATER
ROXBORO STEAM ELECTRIC PLANT
SEMORA, NORTH CAROLINA

STATE RD 1316
a
1��z a• t $r:, .1420
GYPSUM
PAD
A'Y r. �,• :1 r3 GMW-10x
1 8 ��♦� GMW-11 MW' I B h RO-16
MW 6BR
HEATED WATER
� .
ABMW 4BR ABMW-79R- �'i-CW 1^ l -: �'.,°
DISCHARGE POND
-� 432 _ I w o
• 3010 I
CW-2D MW-5BR 1 w
\ �. MW 20BRL _
}a}ABMW-6BR ABMW-7BRL Yam. 5:
1966 EAST RO
MIA'
W 96R ' • 1000 _. ASH BASIN M BR 1/ MW-24BR 1,
ABMW-3BRL
MW-2BR * ( �, I y
• RO13,.,,
a,... = GMW-7 - - - -
u'Lk•:.. j ABMW-3BR �" GMW-8 MW-17BR\\,=
G1. MW=9" /
30000 /•I
MW-8BR
W 25 BR
F
ABMW-1 BR � • � - M -
RO-7
'�' iriJ r'" �'� • MW-13BR , ��+•^.t
a� 1973 WEST '• j MW-16BR•� / i� ` ..,.� -`
lwia
ASH BASIN ABMW-2BR �. �♦
�♦
/
MW 19BR RO-8
•
� c ,�.DUNNAWAMW 7BR YRD RO-15
¢
MVV=1♦OBR� RO-11
l r f
\RO-3 RO 12
♦ , s , MW-26BR
41
c BG 1 BR � MW-4BRL
MW-4BR
STATE �a1 `'•":'" ..` �•�
,
HWY57 1+st>. MW-15BR... - -'' •
GRAPHIC SCALE
, ♦ 750 375 0 750
!, MW=18BR"
RO 10 1 / \ RO 10 2 SFMOR
♦ _ t IN FEET
148 RIVER STREET, SUITE 220
� ND • ARC ... Y: GREENVILE, SOUTH CAROLI A29601
PHONE [phone]
4.01
www.svnterracoro.com
T
LEGEND
1
NO
NS
NOTES:
1,500 FIGURE 1-25
ISOCONCENTRATION MAP
MANGANESE IN BEDROCK GROUNDWATER
ROXBORO STEAM ELECTRIC PLANT
SEMORA, NORTH CAROLINA
m C1' ^ DRAWN BY: B. YOUNG DATE: 07/27/2016
. . M PROJECT MANAGER: C. EADY
' � y 1,• �..4•�s .1, � • �, F��sR �.{ � 11,, � CHECKED BY: C. EADY
,j, iLrt `� •S r.

4'
STATE RD 1316
L
_5
fo'
GYPSUM ................ . . . . . . . . . . . . . . . . . . . . . .
PAD
....... .......
ABMW-7 I.I
#
*4.18 C
HEATED WATER ABMW-5
DISCHARGE POND
NPD�S'
oo�
OUTFALL,. ujLLI
LEGEND
%
ABMW-4
STRONTIUM CONCENTRATION (pg/L)
9300 1966 EAST
NO NOT DETECTED ABOVE REPOR♦ TING LIMIT
.A MW- ASH BASIN
A000---
5,
NS NOT SAMPLED
— - — - — - — - - o STRONTIUM CONTOUR
ABMW-6 r MONITORING WELL
♦ ABMW-1 - — - — - -
L ROXBORO LINED LANDFILL
Jo ROXBORO UNLINED LANDFILL
----------
1973 WEST
ASH BASIN ASH BASIN BOUNDARY
ABMW-2 ASH BASIN COMPLIANCE BOUNDARY
DUKE ENERGY PROGRESS ROXBORO PLANT
%
BOUNDARY
W.
14 DUNNAWAYRD
♦ NOTES:
7000 CONCENTRATIONS SHOWN REFLECT MOST RECENT ANALYTICAL
DATA COLLECTED FROM DECEMBER 2015, JANUARY 2016, APRIL
A
2016, AND JUNE 2016, AS APPLICABLE.
NO NORTH CAROLINA 2L OR INTERIM MAXIMUM ALLOWABLE
CONCENTRATION ESTABLISHED FOR STRONTIUM.
2014 AERIAL ORTHOPHOTOGRAPHY OBTAINED FROM USDA NRCS
'oo'. 41 GEOSPATIAL DATA GATEWAY
(https://gdg.sc.egov.usda.gov/GDGOrder.aspx).
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA
STATE PLANE COORDINATE SYSTEM FIPS 3200 (NAD83/2011).
y
Ll
F
GRAPHIC lo,
SCALE
750 375 0 750 1'500 FIGURE 1-26
ISOCONCENTRATION MAP
IN FEET
148 RIVER STREET, SUITE 220 STRONTIUM IN ASH PORE WATER
GREENVILLE, SOUTH CAROLINA 29601 ROXBORO STEAM ELECTRIC PLANT
PHONE [phone]
SEMORA, NORTH CAROLINA
w ea DRAWN BY: D77779
PROJECT MANAGER: C. EADY ynTerra t
CHECKED BY: C. EADY

4 -
HYCO .�;. �" •
LAKE a � ti e ;
+ STATE RD 1316
GYPSUM
PAD
.� O
HEATED WATER a A MW-22D ••, p o
DISCHARGE POND 1'600
t'f NPDES
OUTFALL � �� `� MW-6D \ ABMW-5D y1 1
A 1 • •� Lu:a MW-5D 1966 EAST • _
1 ASH BASIN ♦ v
:
\CWl0w2 CW5
- at. �h., I �ryy
- t _s
1 1973 WEST
ASH BASIN 'A
yam. I ....
•r?x.
,F 1 { ry•, �DUNNAWAYRD
CW-3
. /, ►� 4f
100
/ CW-4 1 s
STQrE" Wy
71`SEMDRAR��e'""
MW-15D GRAPHIC SCALE
750 375 0 750 1,500
` is
MW-18D
-ynTerra
1148 RIVER STREET, SUITE 220 I
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
DRAWN BY: B. YOUNG DATE: 07/27/2016
PROJECT MANAGER: C. EADY
CHECKED BY: C. EADY
LEGEND
1 STRONTIUM CONCENTRATION (Ng/L)
ND NOT DETECTED ABOVE REPORTING LIMIT
NS NOT SAMPLED
STRONTIUM CONTOUR
MONITORING WELL
L _ _ _ _' ROXBORO LINED LANDFILL
ROXBORO UNLINED LANDFILL
ASH BASIN BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
DUKE ENERGY PROGRESS ROXBORO PLANT
— -"BOUNDARY
NOTES:
CONCENTRATIONS SHOWN REFLECT MOST RECENT ANALYTICAL
DATA COLLECTED FROM DECEMBER 2015, JANUARY 2016, APRIL
2016, AND JUNE 2016, AS APPLICABLE.
NO NORTH CAROLINA 2L OR INTERIM MAXIMUM ALLOWABLE
CONCENTRATION ESTABLISHED FOR STRONTIUM.
2014 AERIAL ORTHOPHOTOGRAPHY OBTAINED FROM USDA NRCS
GEOSPATIAL DATA GATEWAY
(https://gdg.sc.egov.usda.gov/GDGOrder.aspx).
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA
STATE PLANE COORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 1-27
ISOCONCENTRATION MAP
STRONTIUM IN TRANSITION ZONE
GROUNDWATER
ROXBORO STEAM ELECTRIC PLANT
SEMORA, NORTH CAROLINA

r'
} 3
fo
1Rdl,10-2+f N D O� RD
-`
,, ♦ ♦ 4�
STATE RD 1316 -.-1
,
4 f
RO-1..
GYPSUM \ MW 36R':-
T
PAD
,� �� .�• MW-1BIR
HEATED WATER MW-22BR
DISCHARGE POND ABMW-7BRL
NPDES I124-1111&,�� . - — - — -—.;..CW_1 ^ RO-16 /
" ABMW-7BR
OUTFALL
MW-6BRt y y 1 w .
CW 2D 1 i 246 �. MW 20BRL Q
1966 EAST MW-23BR�
'� MW-SBR ASH BASIN � ABMW-4BR z
', �' 182
118,
C— MW-961R \ ABMW-66R 1 MW-246R
t OOO e RO-13
�! ABMW-3BR ,,_\ MW 2BR I MW 25BR \ `N
2190
ABMW-1BR / ABMW-3BRL 9<0 -�•' 1000 \ RO-7
��� MW-13BR
� 1973 WEST
1 ASH BASIN ABMW-2BR 1' MW-16BR• / MW-17BR
�. ♦ I ' • MW-19BR 1,
RO-8
MW-7BR �� DUNNAWAYRD / F { wl % RO-15
MW=1013R
RO-2
, � a
1*: \ CW-3RO-3
D � , . ,
MW-26BR RO-12
P.
./ma's
RO 11
17%► \ BG-1BR MW-4BRL 1 7 4_,
w /A
RO-10-1 �� MW-413R
MW-15BR. • —.
`I' . • `I GRAPHIC SCALE
750 375 0 750
10
ynTerra
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
LEGEND
1 STRONTIUM CONCENTRATION (Ng/L)
ND NOT DETECTED ABOVE REPORTING LIMIT
NS NOT SAMPLED
STRONTIUM CONTOUR
MONITORING WELL
WATER SUPPLY WELL
_ _ ROXBORO LINED LANDFILL
ROXBORO UNLINED LANDFILL
�o ASH BASIN BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
�— .. DUKE ENERGY PROGRESS ROXBORO PLANT
—''BOUNDARY
NOTES:
CONCENTRATIONS SHOWN REFLECT MOST RECENT ANALYTICAL
DATA COLLECTED FROM DECEMBER 2015, JANUARY 2016, APRIL
2016, AND JUNE 2016, AS APPLICABLE.
NO NORTH CAROLINA 2L OR INTERIM MAXIMUM ALLOWABLE
CONCENTRATION ESTABLISHED FOR STRONTIUM.
2014 AERIAL ORTHOPHOTOGRAPHY OBTAINED FROM USDA NRCS
GEOSPATIAL DATA GATEWAY
(https://gdg.sc.egov.usda.gov/GDGOrder.aspx).
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA
STATE PLANE COORDINATE SYSTEM FIPS 3200 (NAD83/2011).
WATER SUPPLY WELL SAMPLED BY NCDEQ BETWEEN MAY 2015 AND
SEPTEMBER 2015.
1,500 FIGURE 1-28
ISOCONCENTRATION MAP
STRONTIUM IN BEDROCK GROUNDWATER
ROXBORO STEAM ELECTRIC PLANT
SEMORA, NORTH CAROLINA
DRAWN BY: B. YOUNG DATE: 07/27/2016
PROJECT MANAGER: C. EADY
CHECKED BY: C. EADY

W
4 -
4 ,^• �, '
-
.: y STATE RD 1316 '
Y
,
.� GYPSUM „ .:.
r : _ PAD
ABMW-7
I560Aff
.�
ABMW'5 ♦. i y
'.AB.MW-4
0 o
'" " .- .3300------ '. --• � � - �. p�: 'ems. --.,
.•
_ ,-
_L , W LEGEND
'u
1 i
1 TOTAL DISSOLVED SOLIDS CONCENTRATION (mg/L)
1966 EAST
NO NOT DETECTED ABOVE REPORTING LIMIT
A T♦' u'r you ASH BASIN
ABMW-6 NS NOT SAMPLED
1 , ,. / ®. ... .
ik a TOTAL DISSOLVED SOLIDS CONTOUR
ABMW-1-
,1 MONITORING WELL
420 0
L _ _ _ _' ROXBORO LINED LANDFILL
9� _♦' ��' " ® : ROXBORO UNLINED LANDFILL
1973WEST ��_ ��� �o �.�♦� o� ®'-�®® , 1 ASH BASIN BOUNDARY
ASH BASIN
ABMW 2 0 1 � � ♦ < _ - . !ASH BASIN COMPLIANCE BOUNDARY
5, <z ;r`� , �, - - ♦ 3 , 1 - - DUKE ENERGY PROGRESS ROXBORO PLANT
,; kt : / �` . ` _ ♦ _ — -" BOUNDARY
DUNNAWAY ` RD NOTES:
oo - — . ;.' . CONCENTRATIONS SHOWN REFLECT MOST RECENT ANALYTICAL
F; !`a• 1 ^ ` �. '" = DATA COLLECTED FROM DECEMBER 2015, JANUARY 2016, APRIL
2016, AND JUNE 2016, AS APPLICABLE.
• /` .. THE NORTH CAROLINA 2L FOR TOTAL DISSOLVED SOLIDS IS 500
mg/L.
h` s - • / 2014 AERIAL ORTHOPHOTOGRAPHY OBTAINED FROM USDA NRCS
s 1� t ► GEOSPATIAL DATA GATEWAY
ex ,,. ♦ ♦ (https'//gdg sc egov usda gov/GDGOrder aspx)
rJ+ 1{
57
srAr } rryy RD E ' - —
4
� s s
HEATED WATER
DISCHARGE PONI
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA
r STATE PLANE COORDINATE SYSTEM FIPS 3200 (NAD83/2011).
" 'kT
GRAPHIC SCALE
750 375 0 750 1,500
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
ww w. sv nt e rra c 0 r Q, c 0 m
DRAWN BY: B. YOUNG DATE: 07/27/2016
PROJECT MANAGER: C. EADY
CHECKED BY: C. EADY
FIGURE 1-29
ISOCONCENTRATION MAP
TOTAL DISSOLVED SOLIDS IN ASH PORE WATER
ROXBORO STEAM ELECTRIC PLANT
SEMORA, NORTH CAROLINA

4 -
u
Ilk
STATE RD 1316
SHORE a ,
Ml
T € , NS
M22D
W_ GYPSUM o s
e as 1
V 2�- , PAD
kl
tee'
HEATED WATER a ♦ 114U \ '... p o
DISCHARGE POND
. , . �♦ Cif -_ � - - _ _'_' � J:. 'S-
NPDES -
o n
OUTFACE MW-6D � � -,- S_ .- .. .v:.a;
CW-2 f ABMW-5D/ 1966EAST �. LEGEND
¢+ a' ASH BASIN S C) 1 TOTAL DISSOLVED SOLIDS CONCENTRATION (mg/L)
ND NOT DETECTED ABOVE REPORTING LIMIT
CW-5 - - NS NOT SAMPLED
TOTAL DISSOLVED SOLIDS CONTOUR
♦ ',!
I MONITORING WELL
500 MW-5D _ _ �
m� q _' ROXBORO LINED LANDFILL
is 1973 WEST v� ��' ®ate ® ROXBORO UNLINED LANDFILL
ASH BASIN �o f . �' �' �d
' � , - � ®®"� � . ASH BASIN BOUNDARY
- - - - ! ASH BASIN COMPLIANCE BOUNDARY
DUKE ENERGY PROGRESS ROXBORO PLANT
,
. �� — -" BOUNDARY
,F 1 s•, gg �DUNNAWAYRD
fy ♦ Nti,, % . o.
00
CW-3 ♦ ' e
� a
100
BG-1 1AWk
e a CW-4 1
� UG�
E HWY57 SEMDRA'
�.
# a: MW-15D
e
y - -ynTerra
al �
4
- NOTES:
CONCENTRATIONS SHOWN REFLECT MOST RECENT ANALYTICAL
« DATA COLLECTED FROM DECEMBER 2015, JANUARY 2016, APRIL
2016, AND JUNE 2016, AS APPLICABLE.
THE NORTH CAROLINA 2L FOR TOTAL DISSOLVED SOLIDS IS 500
mg/L.
2014 AERIAL ORTHOPHOTOGRAPHY OBTAINED FROM USDA NRCS
GEOSPATIAL DATA GATEWAY
(https://gdg.sc.egov.usda.gov/GDGOrder.aspx).
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA
wig STATE PLANE COORDINATE SYSTEM FIPS 3200 (NAD83/2011).
..
GRAPHIC SCALE
750 375 0 750 1,500 FIGURE 1-30
IN FEET ISOCONCENTRATION MAP
1 8RIVER
IV RSTREETH296o1 SUITE
2 TOTAL DISSOLVED SOLIDS IN TRANSITION ZONE
GROUNDWATER
PHONE [phone]
www. n e,,—a.t . om ROXBORO STEAM ELECTRIC PLANT
PRAWNBM MANAGER:
DATE:07/27/2016 SEMORA NORTH CAROLINA
PROJECT MANAGER: C. EADY �
CHECKED BY: C. EADY

t�
�: ♦ , 4.
STATE RD 1316 -.-i
,
RO 1 BMW EIR
1'• .�f ;
MW-14BR
MW-22BR 1 .
GYPSUM • .;
PAD a
f �. A MW-1 BIR
Oft
GMW 10 l . ♦
'r1'94 l . I co
HEATED WATER
DISCHARGE POND �" ♦ ABMW-7BR J -
NPDES ROO
� 220 V." ABMW- RL
OUTFACE aL MW-6BR i 490 w im
1
y 1
MW-20BRL J
x 400' u' 1966 EAST ABMW-4BR GMW-11 M - 3BR rA�. MW,=5BR
ASH BASIN a30 611 I 290 �.
MW 9BR ABMW-3BRL ABMW-6BR 400 tFa MW-24BR RO=4
RO-13
MW-2BR
.� ♦
ABMW1BR�4. GMW=9MW,17BR41
�ABMW-3BR s \ GMW=7
RO-7
MW 8BR GMW-8 / � -♦ MW 25BR /
1973WEST � r.`. ��1�� �•.,.,,�..��
ASH BASIN 400 ` . MW-13BR G -_
1 ABMW-2BR • MW-16BR / -
�. p�rgTF ` MW-19BR
MW 7BR ,a� �� DUNNAWAYRD
/ 060, { P y a^ / RO-15
147t '�.♦ MW1,0BR ®+ RO-11
_ RO-2
:ems 38' w
`, CW-3D - : ; ,' . w �RO-3- RO-12- � -
` MW-26BR t
�► BG-1BR 1 MW-4BRL .`
RO-10-1 MW-4BR ♦�._..._
, 990 a MW-15B R. - — - • - - • 5 G RAFHICSC ALE 1
I `
I
'..
4 z
�R@A:10-2 SFM
a
.`
10
-ymTerra
750 375 0 750 1,500
1148 RIVER STREET, SUITE 220 I
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
DRAWN BY: B. YOUNG DATE: 07/27/2016
PROJECT MANAGER: C. EADY
CHECKED BY: C. EADY
t...-..-.. `.�. .. �,..- ....�:.. .. i.. •-yam. ..,a ':.d .4...A. _ .-. s...
LEGEND
1 TOTAL DISSOLVED SOLIDS CONCENTRATION (mg/L)
ND NOT DETECTED ABOVE REPORTING LIMIT
NS NOT SAMPLED
TOTAL DISSOLVED SOLIDS CONTOUR
a MONITORING WELL
WATER SUPPLY WELL
ROXBORO LINED LANDFILL
ROXBORO UNLINED LANDFILL
�o ASH BASIN BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
. DUKE ENERGY PROGRESS ROXBORO PLANT
1— .
— -'BOUNDARY
NOTES:
CONCENTRATIONS SHOWN REFLECT MOST RECENT ANALYTICAL
DATA COLLECTED FROM DECEMBER 2015, JANUARY 2016, APRIL
2016, AND JUNE 2016, AS APPLICABLE.
THE NORTH CAROLINA 2L FOR TOTAL DISSOLVED SOLIDS IS 500
mg/L.
2014 AERIAL ORTHOPHOTOGRAPHY OBTAINED FROM USDA NRCS
GEOSPATIAL DATA GATEWAY
(https://gdg.sc.egov.usda.gov/GDGOrder.aspx).
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA
STATE PLANE COORDINATE SYSTEM FIPS 3200 (NAD83/2011).
WATER SUPPLY WELL SAMPLED BY NCDEQ BETWEEN MAY 2015 AND
SEPTEMBER 2015.
FIGURE 1-31
ISOCONCENTRATION MAP
TOTAL DISSOLVED SOLIDS IN BEDROCK
GROUNDWATER
ROXBORO STEAM ELECTRIC PLANT
SEMORA, NORTH CAROLINA

a+
!Ga r u♦ LAFNE �y 'e
}a .
STATE RD 1316 -
pp,SHORE'RD
ryry
1` 4
.o.s.a�� ♦ � �
C R
GYPSUM PAD
.�♦ .... .4 E.
Vw—
HEATED WATER ABMW-5 ABMW-7
DISCHARGE POND 1"0.371 '91—
uj
VVcn
ti
•. . dk _..:�; � ,' � 1966 EAST.-
�.� ASH BASIN 1 I
AB 42 3..- _ t ABMW-4
ABMW=6'
---
.. 1 32 r op
� ABMW-1
1973 WEST
F i { ,.� �4F? ♦ ASH BASIN
DUNNAINAYRD
4�.��j�y :Fey" , \ t'✓'`i � , } � �
4 _
ABMW-2
1
x x
.�.►��•
' ` ♦ �100.
s
c.. ♦ 1
'STATEt • • =,.
HWy57 SEMORARD
10
°
-2yerra
LEGEND
`
1
ND
5
NS
..........
s
4:FF.
GRAPHIC SCALE
750 375 0 750 1,500
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PITON E 864-421-9999
WWw syn""II OIp.C.n
DRAWN BY: B. YOUNG DATE: 07/27/2016
PROJECT MANAGER: C. EADY
CHECKED BY: C. EADY
NOTES:
FIGURE 1-32
ISOCONCENTRATION MAP
VANADIUM IN ASH PORE WATER
ROXBORO STEAM ELECTRIC PLANT
SEMORA, NORTH CAROLINA

.7LvAh, !
♦k 'i•:1{. ..� L ,V - k � n Fir.
�q
a .z ♦' c `, 9P'` k+ 1 STATE RD 1316 -
1SWORE'RD
:.� -. w � A tom',, 'k a� �i-. '. *�� � -• i. ♦•
.0000.
},}:„ � �� a . t 7���,,�rr3°5c ��� • ..r.. � . GYPSUM
MW-22D' PAD
3.79
MW-6D ♦�
HEATED WATER 6.01 ♦ / �, _- �" ftb� ,
DISCHARGE POND
' ABMW-5D
MW-5D / O'556
s 9.23 w 1966 EAST
o CW 2 _ ASH BASIN /
1973 WEST
a. • ASH BASIN �'A
DUNNAWAYRD
. 4�r rx j,�4..�T y''� , + r �i7 9' ... `♦ � . — � ;''ilk}
-
A -
�s r/
jr
'STAY t a
EHWy57 SEMORARO
MW-15D
MW-18D
ax
erra
GRAPHIC SCALE
750 375 0 750 1,500
1148 RIVER STREET, SUITE 220 I
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
DRAWN BY: B. YOUNG DATE: 07/27/2016
PROJECT MANAGER: C. EADY
CHECKED BY: C. EADY
LEGEND
1
NO
NS
NOTES:
FIGURE 1-33
ISOCONCENTRATION MAP
VANADIUM IN TRANSITION ZONE
GROUNDWATER
ROXBORO STEAM ELECTRIC PLANT
SEMORA, NORTH CAROLINA

e
" STATE RD 1316 i k . Sf
�r 4 0
k;.�` . i' ram,. ♦.� o,MW-14BR
r
.I
3
�u # •. r.. GYPSUM \ MW R j� ;
.. '� e.
sa a t e PAD
4 ,rfF.i'
e
MV11
l22BR_ E
HEATED WATER
DISCHARGE POND%
ABMW-7BR ABMW-7BRL- — - — CW-1 RO-16 /.
MW-6BR �0.443 �. 4 " rn
0.544 • 06 i w ce '
CW-2D 1 MW-20BRL
1966 EAST 4BMW-4BR
' . 7 M ND R ASH BASIN '� e
MW-9BR A3MW-3BR \ABMW 6BR 1 MW-24BR �+t,
573 0.308 �_ _ _— �' 1 RO-13r
MW-17BR /
MW-2BR '
ABMW-3BR I /
MW-8BR ABMW-1BIR '
/ 0.346
1973 WEST �� ° i W-25BR
ASH BASIN MW 13BR r - -
K
ABMW 2BR i '• MW-16BR•� }� r'-- •'1., a
i
'.(.. MW-7BR � DU t
?'• g NNAWAY RD
'S9.# sry. ALA., ♦' RO-15
MW=10BR RO RO11
b
}. ..: CW-313 • ?, �RO'3 RO 12
MW-26BR
Je-
BG-1BR � MW-4BRL .`
®' RO-16-1 ` MW-4BR
'STATE HWy5* "ND
GRAPHIC SCALE
750 375 0 750 1,500
/ F
MW=18BR=-'°.
r \ RO-10-2 SFMQ �. ® t IN FEET
_ 148 RIVER STREET, SUITE 220
l- $ Rq GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
° • ' - L�$ wwws n erracor .com
¢- nTermDRAWN BY:
Y c apx t �'Sr t^' .LY PRO ECT MANAGER: C. EADY DATE: 07/27/2016
�
4.s -1, Y FesR I rb° -,� CHECKED BY: C. EADY
A.j < .� ,.
LEGEND
1
ND
NS
NOTES:
FIGURE 1-34
ISOCONCENTRATION MAP
VANADIUM IN BEDROCK GROUNDWATER
ROXBORO STEAM ELECTRIC PLANT
SEMORA, NORTH CAROLINA

LEGEND
9 MW-12BR CSA MONITORING WELL
-1 COMPLIANCE MONITORING WELL CW
❑ BG-1D BACKGROUND COMPLIANCE MONITORING WELL
"9 GMW-8 LANDFILL MONITORING WELL
MW-2 MONITORING WELL _♦'+ x i
CI PZ-12 PIEZOMETER I _-
i + WATER INTAKE BASIN 1 3P
1
• R016 NC DEQ SUPPLY WELL SAMPLE ID (APPROXIMATE) `r
DUKE ENERGY PROGRESS PARCEL LINE •
—__— PERSON COUNTY PARCEL LINE .• r '�
COMPLIANCE BOUNDARY ____ - ! !� t, ♦ MW-22DCOOLINr
• _ s►•" TERMW 22BRG_ ♦ i
11
ASH BASIN WASTE BOUNDARY OW
'
POND �e MW-22BRL -
LINED LANDFILL LIMIT (APPROXIMATE) '= :t!
GMW-2
AERIAL IMAGES: ' -
APRIL 17, 2014 AERIAL PHOTOGRAPH OBTAINED FROM WSP. - '' _ GMW-2A _ OP
GMW-1O MW-01BR
FEBRUARY 20, 2013 AERIAL PHOTOGRAPHS OUTSIDE OF THE WSP AERIAL COVERAGE J / GMW-6 ti G M W-11
WERE OBTAINED FROM THE INC GEOSPATIAL PORTAL AT TowENG
http://data.nconemap.gov/geoportaI/catalog/main/home.page
inrAKe Polvo I N ELECTRICAL SUBSTATIONAL
•'♦ - ,
MW 6D GMW-1A • !! PZ-14,. R016
MW-613R S / w ABMW-7 I # flN�7`'sr f n�pwsi a
ABMW-5 ABMW-7BR r t"
ABMW-5D ABMW 7BRL
MW 11BR " EAST ASH BASIN
Hrc!ERV IR MW-5D ABMW 4
-- MW-5BR ABMW 4BR LINED ASH
CW 2 f" -/ ABMW-6 LANDFILL I MW 20BRL
CW 2D CW 5 ABMW-6BR PZ-12 �'
-.. R
Fm—w -,I I
/ EASTERN EXTENSION ''1?�;.t+ to!"'
fIMPOUNDMENT
MW-2 ABMW-3BR MW 2BR y MW 24BR s R04
/ ABMW-3BRL R07 R013
MW-21BRL GMW 8i GMW 9 MW 25BR S 7BR w • a.,�� j
MW 8BR 1 1 ABMW-1BR
- FGD 0s,�r
�, MW-12BR 0d, POND 'EAST V1 . .�fm "�'t�:�'+1k,.�,�
-
- � � POND �`�• a . / .. `vv�- _.
7P�102
1 FGD
1
POND • R09
G' _` .- ♦ I' ..�+
"j'rS'MW 16BR �y
v2 WEST ASH BASIN DG 2 BOREHOLE
ABANDONED
�,
,., ■ ♦ LT Syr ,:
R03 R02 o�NNq qYR i R015 �.
1 R06 • R08 • R011 i
.. 0.
a x
o ,
CW 3
CW-3D
\ o' MW 26BR IV
1( 51
BG 16RL 1-SECTION
BG 1D MW 4BR / c SITE CROSS SECTION LOCATION MAP
BG-1BR BG 1 IMW-4BRLI odv
- ♦ v CW-4
SOUTHERN. EXTENSION IMPOUNDMENT
R010 MW-15D
I
SFMO MW-15BR
O (N
Mks WOODLAND cHGHw1 s 5.
ELEMENTARY SCHIL
OOL
ROXBORO STEAM ELECTRIC PLANT
1700 DUNAWAY RD
SEMORA, NORTH CAROLINA
_ GRAPHIC SCALE
500 0 500 1000
IN FEET
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
MW-18D "' ,1' wwwsynterracorp.com
MW 18BR CRAI�
DRAWN BY: N IN DATE: 07/13/2016
SynTerPROJECTMANAGER: CRAIG EADY
b
LAYOUT: FIG (CROSS-SECTION LOG MAP)

A -
(SOUTH)
J
O
O
S
U
o�
z Q
QJ Z
w
od 0w
J
o e �w
0
d' C 0
- A'
(NORTH)
KE ENERGY ROXBORO STEAM ELECTRIC PLANT PROPERTY
ASH BASIN COMPLIANCE BOUNDARY
WEST ASH BASIN
WASTE BOUNDARY
a
m
m
0
C9
m
C9
m
>
Q
0
O
z
J
c�
Q
w
�
J
oC
a.
U
Q
EAST >
m
M
m
m
a
SLUICE PIPE TRENCH
U
UJI
BIO-REACTOR
BUILDING
FGD
POND
r
3
,
�'
a
REGOLITH
(D
WEST FGD POND
ASH PORE WATER
22
¢
Ln
w
W
_
Q
V
m
QQ
m
m
QQQ
m
m
�,
o
¢
J
w
_----
_►�
ASH/SOIL
V
ELECTRIC
p
it
a SUBSTATION
w
ASH
`
J
Q
\
ASH
—REGOLITH
Z
u�
GENERALIZED
TD 398'
msl.
TO 435' msl.
Q
U
GROUNDWATER
TD 453' msl.FLOW
DIRECTION
��.
i _TD 391' msl.
Tr,
WOODLAND
SCHOOL
220'
SOURCE INFORMATION:
EXISTING GROUND SURFACE BASED ON A DRAWING PROVIDED BY THE WSP GROUP, TITLED "ROXBORO FINAL', DATED JUNE 8, 2015.
HISTORIC GROUND SURFACE BASED ON THE 7-1/2' USGS TOPOGRAPHIC MAP FOR OLIVE HILL, NC DATED 1968, REVISED 1994.
MONITORING WELL DATA WAS OBTAINED FROM THE COMPREHENSIVE SITE ASSESSMENT REPORT PREPAREED BY SYNTERRA, DATED SEPTEMBER 2, 2015.
PRIVATE WATER SUPPLY WELL INFORMATION WAS OBTAINED FROM A LIST PROVIDED BY DUKE ENERGY PROGRESS
MONITORING WELL WATER LEVELS WERE COLLECTED BY SYNTERRA ON JUNE 14, 2016.
GROUNDWATER
166'
LEGEND
GROUND SURFACE
�WELLCASING MONITORING
WELL SCHEMATIC
SCREENED INTERVAL
GENERALIZED WATER TABLE
INFERRED WATER TABLE
HORIZONTAL GRAPHIC SCALE
250 O 250 500 11010 NCDEQ SUPPLY WELL SAMPLE ID
IN FEET DW-46 RECEPTOR SURVEY WELL ID
VERTICAL GRAPHIC SCALE MW-56R MONITORING WELL
50 O 50 100 TOTAL DEPTH ELEVATION OF BOREHOLE
N FEET TO 260' msl. IN FEET MEAN SEA LEVEL (msl)
VERTICAL EXAGGERATION 5X FIGURE 1-36
SITE CROSS-SECTION A -A'
148 RIVER STREET, SUITE 220 DUKE ENERGY PROGRESS
GREENPHONE 64-421-9999LLE, SOUTH ROLINA29601 ROXBORO STEAM ELECTRIC PLANT
PHONE [phone]
www.synterr,c,,p.com 1700 DUNNAWAY RD
Terra PRAWCTMANA ER:CRAAIN DATE 07/O6/2016 SEMORA, NORTH CAROLINA
S� PROJECT MANAGER:CTIO FAD Y
LAYOUT: FIG 1-36 (SECTION A -A')
07/29/201611:25 A- v:\Duke Energy Pro ress.1026 107. Roxboro Ash Basin GW Assessment Plan 19.EG CSASUP Fi ures DE ROXBORO CSA SUP SITE SECTIONS.dw

B
B'
(SOUTH)
(NORTH)
DUKE ENERGY ROXBORO
STEAM ELECTRIC PLANT PROPERTY
ASH BASINCOMPLIANCE BOUNDARY
EAST ASH BASIN
J
WASTE BOUNDARY
w O
z =
w
0
w > z O GO z W
of m m
LINED
ASH LANDFILL
Q N w
MM
w
a N
� APPROXIMATE LANDFILL
a v
J
REGOLITH 3
LINER ELEVATION
�O
ASH
mm�
REGOLITH
m In
N N a o
z
TD 493' msl.
\ ASH \
m m m
as
w
COOLING TOWER
TD 484' msl.
` / \�
Q Q Q
m in p
Q Q CL ¢� f
o a
TO 465' msl.
TD 46O msl.
ASH � �
w Q OF
N N
0 w o w
GENERALIZED
\
� � ASH
\�
> >
GROUNp�yATER
TD 433' msl.
— TD 444' msl.
417' msl. U' o
`�'
FLO W DIRECTION
PROFILE BASED ON HISTORIC
ASH PORE WATER
U
TO
WATER INTAKE BASIN HYCO LAKE
BEDROCK
TOPOGRAPHIC MAP
425' msl.
z 7—USGS
TO 398' msl.
TD 399'
TD 396' msl. TD 391' msl.
_
TD 386' msl.
— y
BEDROCK
BEDROCK
TD 339' msl. GENERALIZED GROUNDWATER FLOW DIRECTION \
PROFILE BASED ON HISTORIC
USGS TOPOGRAPHIC MAP
FORMER SARGENTS
CREEK CHANNEL
TO 253' msl.
TO 229' msl.
TD 171'
msl.
BEDROCK
LEGEND
GROUND SURFACE
MONITORING
WELLCASING WELL SCHEMATIC
ISCREENED
INTERVAL
BEDROCK
GENERALIZED WATER TABLE
HORIZONTAL
250 0
GRAPHIC SCALE
250 Soo
— — — INFERRED WATER TABLE
R03 NCDEQ SUPPLY WELL SAMPLE ID
DW-34 RECEPTOR SURVEY WELL ID
MW-13BR MONITORING WELL
TOTAL DEPTH ELEVATION OF BOREHOLE
TD 253' msl. IN FEET MEAN SEA LEVEL (msl)
IN FEET
VERTICAL GRAPHIC SCALE
50 0 50 100
IN FEET
III
VERTICAL EXAGGERATION 5X
FIGURE 1-37
SITE CROSS-SECTION B-B'
DUKE ENERGY PROGRESS
SOURCE INFORMATION:
148 RIVER STREET, SUITE 220
EXISTING GROUND SURFACE BASED ON A DRAWING PROVIDED BY THE WSP GROUP, TITLED "ROXBORO FINAL", DATED DUNE 8, 2015.
PHONE [phone]LLE, SOUTH ROLINA29601
PHONE [phone]
ROXBORO STEAM ELECTRIC PLANT
HISTORIC GROUND SURFACE BASED ON THE 7-1/2' USGS TOPOGRAPHIC MAP FOR OLIVE HILL, NC DATED 1968, REVISED 1994.
www.synterracorp.com
1700 D U N NAWAY RD
DRAWN BY: JOHN CHASTAIN DATE: 07/06/2016
PROJECT MANAGER: EADY
MONITORING WELL DATA WAS OBTAINED FROM THE COMPREHENSIVE SITE ASSESSMENT REPORT PREPAREED BY SYNTERRA, DATED SEPTEMBER 2, 2015.
syn����
S E MORA NORTH CAROLINA
PRIVATE WATER SUPPLY WELL INFORMATION WAS OBTAINED FROM A LIST PROVIDED BY DUKE ENERGY PROGRESS
LAYOUT: FIG 1-37 (SECTION B-B'�
,
MONITORING WELL WATER LEVELS WERE COLLECTED BY SYNTERRA ON JUNE 14, 2016.
07/28/2016 5:48 PM P:\Duke Energy Pro ress.1026 107. Roxboro
Ash Basin GW Assessment Plan 19.EG CSASUP Fi ures DE ROXBORO CSA SUP SITE SECTIONS.dw

C
C'
(SOUTH)
(NORTH)
DUKE ENERGY ROXBORO STEAM ELECTRIC PLANT PROPERTY
ASH BASIN COMPLIANCE BOUNDARY
EAST ASH BASIN
WASTE BOUNDARY
LINED ASH LANDFILL —
0
W W
J U U
J Z W
w w U
Z
ui
w w o m
W
5
ASH
O3
r - G
N N
�N APPROXIMATE LANDFILL o
r LINER ELEVATION �
EASTERN EXTENSION IMPOUNDMENT d ------------------------
REGOLITH
--
ASH PORE ASH PORE WATER
_
Qo
J
-
WE=465' msl
� -
TD 456' msl. \ ASH / i \ / \
- i
�� , ,
TD ��_ _ _
457' msl. \ —
— ASH \.✓ \���// /� \
/ `\PROFILE `REGOLITH
TD450'msl. ��
_
GEN ERALIZEp
_ _ \ \ / BASED ON HISTORIC
REGOLITH
C9 C9 COOLING
GROUNp
USGS TOPOGRAPHIC MAP
TOWER POND
ATER FLOW pIRECTION
— — — — '
--- TD 399' msl. WE=409' m-'
�
TD 391' msl.
GENERALIZED GROUNDWATER FLOW DIRECTION
TD 369' msl.
BEDROCK
TD 276' msl.
BEDROCK
BEDROCK
LEGEND
GROUND SURFACE
WELLCASING MONITORING
WELL SCHEMATIC
ISCREENED
INTERVAL
GENERALIZED WATER TABLE
— — — INFERRED WATER TABLE
HORIZONTAL GRAPHIC SCALE
250 0 250 500 NCDEQ SUPPLY WELL SAMPLE ID
IN FEET RECEPTOR SURVEY WELL ID
®
VERTICAL GRAPHIC SCALE MW-176R MONITORING WELL
50 0
50 100 TOTAL DEPTH ELEVATION OF BOREHOLE
TD 233' msl.
IN FEET IN FEET MEAN SEA LEVEL (msl)
VERTICAL EXAGGERATION 5X
FIGURE1-38
SOURCE INFORMATION:
SITE CROSS-SECTION C-Cis
EXISTING GROUND SURFACE BASED ON A DRAWING PROVIDED BY THE WSP GROUP, TITLED "ROXBORO FINAL", DATED JUNE 8, 2015.
148 RIVER STREET, SUITE 220
DUKE ENERGY PROGRESS
HISTORIC GROUND SURFACE BASED ON THE 7-1/2' USGS TOPOGRAPHIC MAP FOR OLIVE HILL, NC DATED 1968, REVISED 1994.
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
ROXBORO STEAM ELECTRIC PLANT
THE SURFACE BOTTOM IN THE EASTERN EXTENSION IMPOUNDMENT WAS BASED ON INFORMATION OBTAINED FROM THE AMEC FOSTER WHEELER
DOCUMENT TITLED "SUMMARY REPORT FOR INVESTATION RESULTS EAST ASH POND SEDIMENT SAMPLING (ISSUE ROX-115)", DATED SEPTEMBER 16, 2015.
www.synterracorp.com
1700 D U N NAWAY RD
MONITORING WELL DATA WAS OBTAINED FROM THE COMPREHENSIVE SITE ASSESSMENT REPORT PREPAREED BY SYNTERRA, DATED SEPTEMBER 2, 2015.
DRAWN BY: JOHN CHASTAIN DATE: 07/06/2016
PROJECT MANAGER: CRAIG EADY
Term
S E MORA
NORTH CAROLINALAYOUT:
PRIVATE WATER SUPPLY WELL INFORMATION WAS OBTAINED FROM A LIST PROVIDED BY DUKE ENERGY PROGRESS
FIG 1-38 (SECTION GC')
,
MONITORING WELL WATER LEVELS WERE COLLECTED BY SYNTERRA ON JUNE 14, 2016.
07/28/2016 5:49 PM P:\Duke Enem Pro ress.1026 107. Roxboro
Ash Basin GW Assessment Plan 19.EG CSASUP Fi ures DE ROXBORO CSA SUP SITE SECTIONS.dw

A AN
(SOUTH)
J
0
0
x
U
N
az
Jz
w
02
O
J
3w
�
m
m
T
r
m
m z
W
Q
tU
W
REGOLITH w
cn
ISOPLETH NOTE:
ARSENIC ISOPLETH CONTOURS BASED ON INTERPOLATION OF SITE WIDE DATA.
SAMPLE DATES:
CONCENTRATIONS SHOWN REFLECT MOST RECENT ANALYTICAL DATA COLLECTED FROM DECEMBER 2015, JANUARY 2015, APRIL 2016, AND JUNE 2016.
SOURCE INFORMATION:
EXISTING GROUND SURFACE BASED ON A DRAWING PROVIDED BY THE WSP GROUP TITLED "ROXBORO FINAL" DATED JUNE 8 2015.
HISTORIC GROUND SURFACE BASED ON THE 7-1/2' USGS TOPOGRAPHIC MAP FOR OLIVE HILL, INC DATED 1968, REVISED 1994.
MONITORING WELL DATA WAS OBTAINED FROM THE COMPREHENSIVE SITE ASSESSMENT REPORT PREPAREED BY SYNTERRA, DATED SEPTEMBER 2, 2015.
WATER SUPPLY WELL INFORMATION WAS OBTAINED FROM A LIST PROVIDED BY DUKE ENERGY PROGRESS
MONITORING WELL WATER LEVELS WERE COLLECTED BY SYNTERRA ON JUNE 14, 2016.
KE ENERGY ROXBORO STEAM ELECTRIC PLANT PROPERTY
ASH BASIN COMPLIANCE BOUNDARY
WEST ASH BASIN
WASTE BOUNDARY
EAST
BIO-REACTOR FGD
BUILDING I /-,. WEST FGD POND POND
ASH/SOIL
SASH 17.4
658 ASH
00 /
7_
L7
W-nTerra
(NORTH) I
I—
z
J
IL
SLUICE PIPE TRENCH
U
H
m 0
W
tf1 1n M
J
W
V 2
ELECTRC
m
SUBSTATION
J W
Q �
�REGOLITH
Q
HORIZONTAL GRAPHIC SCALE
250 0 250 500
IN FEET
VERTICAL GRAPHIC SCALE
50 0 50 100
VERTICAL EXAGGERATION 5X
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: JOHN CHASTAIN DATE: 07/13/2016
PROJECT MANAGER: CRAIG EADY
LAYOUT: FIG 1-39 (SECTION A -AS)
IN FEET
ARSENIC 2L VALUE = 10 Ng/L
LEGEND
ARSENIC ISOPLETH IN Ng/L
658 ARSENIC CONCENTRATION IN pg/L
NS NOT SAMPLED
NA NOT ANALYZED
ISCREENED
GROUND SURFACE
WELLCASING MONITORING
WELLSCHEMATIC
INTERVAL
GENERALIZED WATER TABLE
— — — INFERRED WATER TABLE
R010 NCDEQ SUPPLY WELL SAMPLE ID
DW-46 RECEPTOR SURVEY WELL ID
MW-5BR MONITORING WELL
FIGURE 1-39
SITE CROSS-SECTION A -A' WITH ARSENIC
DUKE ENERGY PROGRESS
ROXBORO STEAM ELECTRIC PLANT
SEMORA, NORTH CAROLINA

B
B'
(SOUTH)
(NORTH)
DUKE ENERGY ROXBORO STEAM ELECTRIC PLANT PROPERTY
ASH BASIN COMPLIANCE BOUNDARY
EAST ASH BASIN
J
WASTE BOUNDARY
U O
Z =
U W
w } ILL!
K
co coLINED
M
ASH LANDFILL
N
0 T
j
C, d'
G o a
IL N
APPROXIMATE LANDFILL
m
J
REGOLITH
LINER ELEVATION
m m
I ASH
REGOLITH--------
--------------
Q Q
?� ?�
zo
c�
ASH ���
COOLING TOWER
1.39
a a a
a a IN
—
--
o
11 NS
<1
— —
��
_
--
c'
~
0
Q o
ASH
r
33
I0
z
0
0.217
_
_
111b.' ASH
Nz NS 0 0
o
OD
214
U
WATER INTAKE BASIN HYCO LAKE
<1
378
2.69 •^ NS
<1
NS
BEDROCK
BEDROCK
�
WNSI
BEDROCK
ARSENIC 2L VALUE = 10 Ng/L
LEGEND
PLETH IN �Jg/L
.66
37$ ARSENIC CONCENTRATION IN IJg/L
NS NOT SAMPLED
® NOT ANALYZED
GROUND SURFACE
MONITORING
�WELLCASING WELL SCHEMATIC
SCREENEDINTERVAL
250
HORIZONTAL
0
GRAPHIC SCALE
250 500
GENERALIZED WATER TABLE
— — — INFERRED WATER TABLE
3 NCDEQ SUPPLY WELL SAMPLE ID
W-34 RECEPTOR SURVEY WELL ID
MW-13BR MONITORING WELL
IN FEET
VERTICAL GRAPH IC SCALE
50 0 IC 100
IN FEET
VERTICAL EXAGGERATION 5X
FIGURE 1-40
ISOPLETH NOTE:
ARSENIC ISOPLETH CONTOURS BASED ON INTERPOLATION OF SITE WIDE DATA.
A7SITE
CROSS-SECTION B-B' WITH ARSENIC
SAMPLE DATES:
148 RIVER STREET, SUITE 220
CONCENTRATIONS SHOWN REFLECT MOST RECENT ANALYTICAL DATA COLLECTED FROM DECEMBER 2015, JANUARY 2015, APRIL 2016, AND JUNE 2016.
GREENVILLE, SOUTH CAROLINA 29601
SOURCE INFORMATION:
PHONE[phone]
DUKE ENERGY PROGRESS
EXISTING GROUND SURFACE BASED ON A DRAWING PROVIDED BY THE WSP GROUP, TITLED "ROXBORO FINAL", DATED JUNE 8, 2015.
www.synterracorp.com
ROXBORO O STEAM ELECTRIC PLANT
DRAWN BY: JOHN CHASTAIN DATE: 07/13/2016
HISTORIC GROUND SURFACE BASED ON THE 7-1/2' USGS TOPOGRAPHIC MAP FOR OLIVE HILL, NC DATED 1968, REVISED 1994.
MONITORING WELL DATA WAS OBTAINED FROM THE COMPREHENSIVE SITE ASSESSMENT REPORT PREPAREED BY SYNTERRA, DATED SEPTEMBER 2, 2015.
IM
erra
PROJECT MANAGER: CRAIG EADV
S EM O RA, NORTH CARD LI NA
WATER SUPPLY WELL INFORMATION WAS OBTAINED FROM A LIST PROVIDED BY DUKE ENERGY PROGRESS
LAYOUT: FIG 1-40 (SECTION B-AS)
MONITORING WELL WATER LEVELS WERE COLLECTED BY SYNTERRA ON DUNE 14, 2016.
."PM P:\Duke Energy Pro ress.1026
107. Roxboro
Ash Basin GW Assessment PIan\19.EG_CSASUP\Figures\DE ROXBORO CSA SUP SECTION ARSENIC.dwg

-
-
C
C'
(SOUTH)
(NORTH)
DUKE ENERGY ROXBORO STEAM ELECTRIC PLANT PROPERTY
ASH BASIN COMPLIANCE BOUNDARY
EAST ASH BASIN
WASTE BOUNDARY
LINED ASH LANDFILL
o
W W
U U
J Z Z W
� w w U
Z
� p
U ul N mFail
U � n v
O
ASH
ccG FYG �cs g N
o
?�
OG all
APPROXIMATE LANDFILL a
N ¢
LINERELEVATION
ZI
3
a
<
REGOLITH
--------------------
o
EASTERN EXTENSION IMPOUNDMENT
<O.$
i��
ASH
/-�
ASH
\ REGOLITH REGOLITH
O O COOLING
TOWER POND
— —
— — — — — — — — — — — — — — — T — — — — —
NS
NA
BEDROCK
BEDROCK
BEDROCK
ARSENIC 2L VALUE = 10 Ng/L
LEGEND
ARSENIC ISOPLETH IN Ng/L
378 ARSENIC CONCENTRATION IN pg/L
NS NOT SAMPLED
NOT ANALYZED
GROUND SURFACE
IWELLCASING MONITORING
WELL SCHEMATIC
SCREENED INTERVAL
HORIZONTAL GRAPHIC SCALE GENERALIZED WATER TABLE
250 0 250
500
— — — INFERRED WATER TABLE
IN FEET
R04 NCDEQ SUPPLY WELL SAMPLE ID
VERTICAL GRAPHIC SCALE
DW-26 RECEPTOR SURVEY WELL ID
50 0 50
100
wFEET
MW-176R MONITORING WELL
ISOPLETH NOTE:
VERTICAL EXAGGERATION 5X
FIGURE 1-41
ARSENIC ISOPLETH CONTOURS BASED ON INTERPOLATION OF SITE WIDE DATA.
CROSS-SECTION C-C' WITH ARSENIC
SAMPLE DATES:
SITE
148 RIVER STREET, SUITE 220
I VIP
CONCENTRATIONS SHOWN REFLECT MOST RECENT ANALYTICAL DATA COLLECTED FROM DECEMBER 2015, JANUARY 2015, APRIL 2016, AND JUNE 2016.
GREENVILLE, SOUTH CAROLINA 29601
SOURCE INFORMATION:
PHONE[phone]
DUKE ENERGY PROGRESS
EXISTING GROUND SURFACE BASED ON A DRAWING PROVIDED BY THE WSP GROUP, TITLED "ROXBORO FINAL", DATED JUNE 8, 2015.
www.synterracorp.com
ROXBORO STEAM ELECTRIC PLANT
HISTORIC GROUND SURFACE BASED ON THE 7-1/2' USGS TOPOGRAPHIC MAP FOR OLIVE HILL, NC DATED 1968, REVISED 1994.
C ���� DRAWN BY:IoRN CrIASTAIN DATE: o7/13/2016
MONITORING WELL DATA WAS OBTAINED FROM THE COMPREHENSIVE SITE ASSESSMENT REPORT PREPAREED BY SYNTERRA, DATED SEPTEMBER 2, 2015.
S� PROJECT MANAGER: CRAIG LADY
SEMORA, NORTH CAROLI NA
WATER SUPPLY WELL INFORMATION WAS OBTAINED FROM A LIST PROVIDED BY DUKE ENERGY PROGRESS
LAYOUT: FIG 1-41(SECTION C-AS)
MONITORING WELL WATER LEVELS WERE COLLECTED BY SYNTERRA ON JUNE 14, 2016.
07/28/20164:15 PM P:\Duke energy Progress.1026\107. Roxboro Ash Basin GW Assessment PIan\19.EG_CSASUP\Figures\DE ROXBORO CSA SUP SECTION ARSENIGdwg

A AN
(SOUTH)
J
0
0
x
U
N
az
Jz
w
02
O
J
3w
�
m
m
T
r
m
m z
W
Q
tU
W
? —
REGOLITH Q
0
ISOPLETH NOTE:
BORON ISOPLETH CONTOURS BASED ON INTERPOLATION OF SITE WIDE DATA.
SAMPLE DATES:
CONCENTRATIONS SHOWN REFLECT MOST RECENT ANALYTICAL DATA COLLECTED FROM DECEMBER 2015, JANUARY 2015, APRIL 2016, AND JUNE 2016.
SOURCE INFORMATION:
EXISTING GROUND SURFACE BASED ON A DRAWING PROVIDED BY THE WSP GROUP TITLED "ROXBORO FINAL" DATED JUNE 8 2015.
HISTORIC GROUND SURFACE BASED ON THE 7-1/2' USGS TOPOGRAPHIC MAP FOR OLIVE HILL, NC DATED 1968, REVISED 1994.
MONITORING WELL DATA WAS OBTAINED FROM THE COMPREHENSIVE SITE ASSESSMENT REPORT PREPAREED BY SYNTERRA, DATED SEPTEMBER 2, 2015.
WATER SUPPLY WELL INFORMATION WAS OBTAINED FROM A LIST PROVIDED BY DUKE ENERGY PROGRESS
MONITORING WELL WATER LEVELS WERE COLLECTED BY SYNTERRA ON JUNE 14, 2016.
KE ENERGY ROXBORO STEAM ELECTRIC PLANT PROPERTY
ASH BASIN COMPLIANCE BOUNDARY
WEST ASH BASIN
WASTE BOUNDARY
EAST
B I O-REACTOR FG D
BUILDING WEST FGD POND POND
ASH/SOIL
ASH 11,130
— lo000 , 11,40_ ASH O�0
3,85U
L7
W-nTerra
1
HORIZONTAL GRAPHIC SCALE
250 0 250 500
IN FEET
VERTICAL GRAPHIC SCALE
50 0 50 100
VERTICAL EXAGGERATION 5X
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: JOHN CHASTAIN DATE: 07/13/2016
PROJECT MANAGER: CRAIG EADY
LAYOUT: FIG 1-42 (SECTION A -BORON)
IN FEET
(NORTH) I
I—
z
J
IL
PIPE TRENCH
U
H
U
W
J
W
ELECTRIC
SUBSTATION
W
J
Q H
_
�REGOLITH
z
_�
Ur
�iz��
BORON 2L VALUE = 700 Ng/L
LEGEND
BORON ISOPLETH IN pVL
658 BORON CONCENTRATION IN ug/L
NS NOT SAMPLED
NA NOT ANALYZED
GROUND SURFACE
ELL CASING MONITORING
WELL SCHEMATIC
JWCREENED INTERVAL
GENERALIZED WATER TABLE
— — — INFERRED WATER TABLE
R010 NCDEQ SUPPLY WELL SAMPLE ID
DW-46 RECEPTOR SURVEY WELL ID
MW-5BR MONITORING WELL
FIGURE 1-42
SITE CROSS-SECTION A -A' WITH BORON
DUKE ENERGY PROGRESS
ROXBORO STEAM ELECTRIC PLANT
SEMORA, NORTH CAROLINA

B
B'
(SOUTH)
(NORTH)
DUKE ENERGY ROXBORO STEAM ELECTRIC PLANT PROPERTY
ASH BASIN COMPLIANCE BOUNDARY
EAST ASH BASIN
J
WASTE BOUNDARY
U O
Z =
U W
w } z O m z
M m _1 m
LINED ASH LANDFILL
N
�L 0 T N
d'
o 0 G
d
N
APPROXIMATE LANDFILL
m
J
REGOLITH
LINER ELEVATION
m
I ASH
m
REGOLITH--------
--------------
Q Q
?� ?�
zo
<50
\\
D_
COOLING TOWER
<50
ASH/�\
aaa
aao
— —
Y —
<50_ NS
��
�� ASH ,�
�_
38,600
Q
N N
0
z
0 0
p o
�
'0 5 35
��_ _
`
I
19,9001
c� c7
�
0
�
Q Q
O
7
0
WATER INTAKE BASIN HYCO LAKE
OOO
<50:
NS
0o
NA
NS
_
BEDROCK
BEDROCK
i
NNSI
BEDROCK
BORON 2L VALUE = 700 fag/L
LEGEND
BORON ISOPLETH IN
� � ug/L
37$ BORON CONCENTRATION IN Ng/L
NS NOT SAMPLED
NOT ANALYZED
GROUND SURFACE
MONITORING
IWELLCASING WELL SCHEMATIC
SCREENEDINTERVAL
250
HORIZONTAL
0
GRAPHIC SCALE
250 500
GENERALIZED WATER TABLE
— — — INFERRED WATER TABLE
3 NCDEQ SUPPLY WELL SAMPLE ID
W'34 RECEPTOR SURVEY WELL ID
MW-13BR MONITORING WELL
IN FEET
VERTICAL GRAPHIC SCALE
50 0 50 100
IN FEET
VERTICAL EXAGGERATION 5X
FIGUREl-43
ISOPLETH NOTE:
BORON ISOPLETH CONTOURS BASED ON INTERPOLATION OF SITE WIDE DATA.
A7SITE
CROSS—SECTION B-B' WITH BORON
SAMPLE DATES:
148 RIVER STREET, SUITE 220
CONCENTRATIONS SHOWN REFLECT MOST RECENT ANALYTICAL DATA COLLECTED FROM DECEMBER 2015, JANUARY 2015, APRIL 2016, AND JUNE 2016.
GREENVILLE, SOUTH CAROLINA 29601
SOURCE INFORMATION:
PHONE[phone]
DUKE ENERGY PROGRESS
EXISTING GROUND SURFACE BASED ON A DRAWING PROVIDED BY THE WSP GROUP, TITLED "ROXBORO FINAL", DATED JUNE 8, 2015.
www.synterracorp.com
ROXBORO O STEAM ELECTRIC PLANT
DRAWN BY: JOHN CHASTAIN DATE: 07/13/2016
HISTORIC GROUND SURFACE BASED ON THE 7-1/2' USGS TOPOGRAPHIC MAP FOR OLIVE HILL, NC DATED 1968, REVISED 1994.
MONITORING WELL DATA WAS OBTAINED FROM THE COMPREHENSIVE SITE ASSESSMENT REPORT PREPAREED BY SYNTERRA, DATED SEPTEMBER
2, 2015.
IM
erra
PROJECT MANAGER: CRAIG EAOY
S EM O RA, NORTH CARD LI NA
WATER SUPPLY WELL INFORMATION WAS OBTAINED FROM A LIST PROVIDED BY DUKE ENERGY PROGRESS
LAYOUT: FIG 1-43 (SECTION B-BORON
MONITORING WELL WATER LEVELS WERE COLLECTED BY SYNTERRA ON DUNE 14, 2016.
07/28/20164:20 PM P:\Duke Energy Pro ress.1026
107. Roxboro
Ash Basin GW Assessment PIan\19.EG_CSASUP\Figures\OE ROXBORO CSA SUP SECTION BORON.dwg

-
-
C
C'
(SOUTH)
(NORTH)
DUKE ENERGY ROXBORO STEAM ELECTRIC PLANT PROPERTY
ASH BASIN COMPLIANCE BOUNDARY
EAST ASH BASIN
WASTE BOUNDARY
LINED ASH LANDFILL
o
W W
U U
J Z Z W
� w w U
Z
� UJ
jU mO� -,vASH
�� 03: s rmmml
Q
?�
0G all
APPROXIMATE LANDFILL a
LINER ELEVATION
N w
Z
�
3
d v?
------------------------ a
1
REGOLITH
o
- - - - - - - - - - - - - -
J
EASTERN EXTENSION IMPOUNDMENT
��\
N
,�
ASH
NS \�� �����\�`i,� 736
N
ASH
—�
C9 (9 COOLING
— — — —
— — — — —
TOWER POND
— — — — — — — — — — — — —
NS
NA
BEDROCK
BEDROCK
BEDROCK
ARSENIC 2L VALUE = 10 Ng/L
LEGEND
BORON ISOPLETH IN pVL
736 BORON CONCENTRATION IN ug/L
NS NOT SAMPLED
NOT ANALYZED
GROUND SURFACE
WELLCASING MONITORING
WELLSCHEMATIC
ISCREENED
INTERVAL
HORIZONTAL GRAPHIC SCALE GENERALIZED WATER TABLE
250 0 250
500
— — — INFERRED WATER TABLE
IN FEET
R04 NCDEQ SUPPLY WELL SAMPLE ID
VERTICAL GRAPHIC SCALE
DW-26 RECEPTOR SURVEY WELL ID
50 0 50
100
INFEET
IMW-176R MONITORING WELL
ISOPLETH NOTE:
VERTICAL EXAGGERATION 5X
FIGURE 1-44
BORON ISOPLETH CONTOURS BASED ON INTERPOLATION OF SITE WIDE DATA.
CROSS-SECTION C-C' WITH BORON
SAMPLE DATES:
SITE
148 RIVER STREET, SUITE 220
CONCENTRATIONS SHOWN REFLECT MOST RECENT ANALYTICAL DATA COLLECTED FROM DECEMBER 2015, JANUARY 2015, APRIL 2016, AND JUNE 2016.
GREENVILLE, SOUTH CAROLINA 29601
SOURCE INFORMATION:
PHONE[phone]
DUKE ENERGY PROGRESS
EXISTING GROUND SURFACE BASED ON A DRAWING PROVIDED BY THE WSP GROUP, TITLED "ROXBORO FINAL", DATED JUNE 8, 2015.
www.synterracorp.com
ROXBORO STEAM ELECTRIC PLANT
HISTORIC GROUND SURFACE BASED ON THE 7-1/2' USGS TOPOGRAPHIC MAP FOR OLIVE HILL, NC DATED 1968, REVISED 1994.
���� DRAWN BY: JOHN CHASTAIN DATe o7/13/201s
MONITORING WELL DATA WAS OBTAINED FROM THE COMPREHENSIVE SITE ASSESSMENT REPORT PREPAREEDBYSYNTERRA,DATED SEPTEMBER2,2O15.
S PROJECT MANAGER* CRAIG LADY
SEMORA, NORTH CAROLINA
WATER SUPPLY WELL INFORMATION WAS OBTAINED FROM A LIST PROVIDED BY DUKE ENERGY PROGRESS
LAYOUT: FIG 1-44 (SECTION C-BORON)
MONITORING WELL WATER LEVELS WERE COLLECTED BY SYNTERRA ON JUNE 14, 2016.
07/28/20164:21 PM P:\Duke Energy Progress.1026\107. Roxboro Ash Basin GW Assessment PIan\19.EG_CSASUP\Figures\DE ROXBORO CSA SUP SECTION BORON.dwg

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F.Al
(SOUTH)
KE ENERGY ROXBORO STEAM ELECTRIC PLANT PROPERTY
]► Eel a1i1]
J
O
O
2
U
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ASH BASIN COMPLIANCE BOUNDARY
z
WEST ASH BASIN
�z
Ow
w
WASTE BOUNDARY
3w
m
m
K
z
m
m
Q
J
U
EAST
m
C1
m m
SLUICE PIPE TRENCH
U
w
O
BIO-REACTOR
BUILDING
FGD
POND
V
REGOLITH
WEST FGD POND
g g
co
—
Q
ASHISOIL
m
Q
m
Q
m
Q
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Q Q
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V M
ELECTRIC
C
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J W
0.03
i SH
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\��_ ���
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f
nz
ISOPLETH NOTE:
CHROMIUM (VI) ISOPLETH CONTOURS BASED ON INTERPOLATION OF SITE WIDE DATA.
SAMPLE DATES:
CONCENTRATIONS SHOWN REFLECT MOST RECENT ANALYTICAL DATA COLLECTED FROM DECEMBER 2015, JANUARY 2015, APRIL 2016, AND JUNE 2016.
SOURCE INFORMATION:
EXISTING GROUND SURFACE BASED ON A DRAWING PROVIDED BY THE WSP GROUP TITLED "ROXBORO FINAL" DATED JUNE 8 2015.
HISTORIC GROUND SURFACE BASED ON THE 7-1/2' USGS TOPOGRAPHIC MAP FOR OLIVE HILL, NC DATED 1968, REVISED 1994.
MONITORING WELL DATA WAS OBTAINED FROM THE COMPREHENSIVE SITE ASSESSMENT REPORT PREPAREED BY SYNTERRA, DATED SEPTEMBER 2, 2015.
WATER SUPPLY WELL INFORMATION WAS OBTAINED FROM A LIST PROVIDED BY DUKE ENERGY PROGRESS
MONITORING WELL WATER LEVELS WERE COLLECTED BY SYNTERRA ON JUNE 14, 2016.
L1P
synTerra
CHROMIUM (VI) 2L VALUE = 0.07 fag/L
LEGEND
CHROMIUM (VI) ISOPLETH IN ug/L
0.019 CHROMIUM (VI) CONCENTRATION IN ug/L
NS NOTSAMPLED
NA NOT ANALYZED
GROUND SURFACE
WELL CASING MONITORING
WELL SCHEMATIC
SCREENED INTERVAL
HORIZONTAL GRAPHIC SCALE
250 0 250 500
GENERALIZED WATER TABLE
— — — INFERRED WATER TABLE
a— i.
VERTICAL
50 0
IN FEET
GRAPHIC SCALE
50 100
R010 NCDEQ SUPPLY WELL SAMPLE ID
DW-46 RECEPTOR SURVEY WELL ID
MW-5BR MONITORING WELL
IN FEET
VERTICAL EXAGGERATION 5X
FIGURE 1-45
SITE CROSS-SECTION A -A' WITH
CHROMIUM (VI)
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE[phone]
www.synterracorp.com
DUKE ENERGY PROGRESS
ROXBORO STEAM ELECTRIC PLANT
SEMORA, NORTH CAROLINA
DRAWN BY: JOHN CHASTAIN DATE: 07/13/2016
PROJECT MANAGER[ CRAIG EADY
LAYOUT: FIG 1-45 (SECTION A -CHROMIUM VI)

00
B -we�
B1
(SOUTH)
(NORTH)
DUKE ENERGY ROXBORO STEAM ELECTRIC PLANT PROPERTY
ASH BASIN COMPLIANCE BOUNDARY
EAST ASH BASIN
J
WASTE BOUNDARY
U O
Z
W J
o
> Z O pip z
M N m
LINED ASH LANDFILL
J
G o a G a O m
d N
APPROXIMATE LANDFILL m
REGOLITH
LINER ELEVATION
g
�
ASH M M
— — R
REGOLITH v---------
------- ------ a s 3
o
COOLING TOWER
<O•03
�
ASH / 00 00 00
0_
<0.03
�/ ♦ aaa
as N
w
NS
—
\\
N N
¢o
ASH i
r
as
A
i
---
r2 g
a
0 03 ASH <0.03 NS 0
0
0
WATER INTAKE BASIN HYCO LAKE
NA
N
BEDROCK
■0.03
-- _
<0.03
-
BEDROCK
BEDROCK'
NS
CHROMIUM (VI) 2L VALUE = 0.07 fag/L
�
LEGEND
<0.0$
CHROMIUM (VI) ISOPLETH IN ug/L
0.019 CHROMIUM (VI) CONCENTRATION IN ug/L
NS NOTSAMPLED
NA, NOT ANALYZED
SURFACE
GROUND MONI TO RING
i
ING WELLSCHEMATIC
SCLLCA6
REENEDINTERVAL
250
HORIZONTAL
0
GRAPHIC SCALE
250 500
GENERALIZED WATER TABLE
— — — INFERRED WATER TABLE
R03 NCDEQ SUPPLY WELL SAMPLE ID
DW-34 RECEPTOR SURVEY W ELL ID
MW-13BR MONITORING WELL
z
IN FEET
GRAPHIC ALE
VERTICAL HIC SC
50 0 50 100
IN FEET
VERTICAL EXAGGERATION 5X
FIGURE 1-46
SITE CROSS-SECTION B-B' WITH
ISOPLETH NOTE:
CHROMIUM (VI) ISOPLETH CONTOURS BASED ON INTERPOLATION OF SITE WIDE DATA.
CHROMIUM
148RIVER STREET, SUITE 22O
SAMPLE DATES:
(VI)
CONCENTRATIONS SHOWN REFLECT MOST RECENT ANALYTICAL DATA COLLECTED FROM DECEMBER 2015, JANUARY 2015, APRIL 2016, AND JUNE 2016.
GREENVILLE, SOUTH CAROLINA 29601
SOURCE INFORMATION:
PHONE[phone]
DUKE ENERGY PROGRESS
EXISTING GROUND SURFACE BASED ON A DRAWING PROVIDED BY THE WSP GROUP, TITLED "ROXBORO FINAL", DATED JUNE 8, 2015.
www.synterracorp.com
ROXBORO STEAM ELECTRIC PLANT
DRAWN BY: 1OHN CHASTAIN DATE:07/13/2016MONITORING
HISTORIC GROUND SURFACE BASED ON THE 7-1/2' USGS TOPOGRAPHIC MAP FOR OLIVE HILL, NC DATED 1968, REVISED 1994.
WELL DATA WAS OBTAINED FROM THE COMPREHENSIVE SITE ASSESSMENT REPORT PREPAREED BY SYNTERRA, DATED SEPTEMBER 2, 2015.
VnT( ��
PROJECT MANAGER:CRAIG EADY
SEMORA, NORTH CAROLI NA
WATER SUPPLY WELL INFORMATION WAS OBTAINED FROM A LIST PROVIDED BY DUKE ENERGY PROGRESS
EAYOUT: FIG 1-46 (SECTION B-CHROMIUM Vp
MONITORING WELL WATER LEVELS WERE COLLECTED BY SYNTERRA ON JUNE 14, 2016.
07/76/2016 4:43 PM P:\Duke energy Progress.lozs\iw.
Roxboro
Ash Basin Gw Assessment Plan\19.EG_CSASUP\Figures\DE ROXBORO CSA SUP SECTION CHROMIUM VILftg

C
C'
(SOUTH)
(NORTH)
DUKE ENERGY ROXBORO STEAM ELECTRIC PLANT PROPERTY
ASH BASIN COMPLIANCE BOUNDARY
EAST ASH BASIN
WASTE BOUNDARY
LINED ASH MONOFILL
0
w w
J U U
Z Z W
2 Lu uj U
9 Z
U W m
0 m
N w h m
ASH
0�
---- 3
APZ11PROXIMATE LANDFILL
N
0
G
C4
LINER ELEVATION
r J
N w
3
a.< co
REGOLITH
o
—
EASTERN EXTENSION IMPOUNDMENT
i—
> Q
IN
_ _ -
��_ — — —_—
jam`~�
N$ \ ASH
\��,_�� ��`�� �, F
0,01 _—_ — —
ASH ��/^
��
0.07
_---
�� REGOLITH REGOLITH
C7 a COOLING
TOWER POND
--
-- — ®'--- — ——-- ---
0-07
NA
0.07
BEDROCK
03
BEDROCK
0,03
BEDROCK
0.03
CHROMIUM (VI) 2L VALUE = 0.07
fag/L
LEGEND
CHROMIUM (VI) ISOPLETH IN ug/L
0.019 CHROMIUM (VI) CONCENTRATION IN PVL
N$ NOTSAMPLED
NA NOT ANALYZED
GROUND SURFACE
WELL CASING MONITORINGWELL SCHEMATIC
SCREENED INTERVAL
HORIZONTAL GRAPHIC SCALE
GENERALIZED WATER TABLE
250 0 250
500
— — — INFERRED WATER TABLE
IN FEET
R04 NCDEQ SUPPLY WELL SAMPLE ID
VERTICAL GRAPHIC SCALE
DW-26 RECEPTOR SURVEY WELL ID
50 0 50
100
IN FEET
MW-17BR MONITORING WELL
FIGURE 1-47
ISOPLETH NOTE:
VERTICAL EXAGGERATION 5X
SITE CROSS-SECTION C-C' WITH
CHROMIUM (VI) ISOPLETH CONTOURS BASED ON INTERPOLATION OF SITE WIDE DATA.
CHROMIUM
SAMPLE DATES:
VIP 148RIVERSTREET,SUITE22O
(VI)
CONCENTRATIONS SHOWN REFLECT MOST RECENT ANALYTICAL DATA COLLECTED FROM DECEMBER 2015, JANUARY 2015, APRIL 2016, AND JUNE 2016.
GREENVILLE, SOUTH CAROLINA 29601
SOURCE INFORMATION:
PHONE[phone]
DUKE ENERGY PROGRESS
EXISTING GROUND SURFACE BASED ON A DRAWING PROVIDED BYTHE WSP GROUP, TITLED "ROXBORO FINAL",
DATED JUNE 8, 2015.
www.synterracorp.com ROXBORO STEAM ELECTRIC PLANT
HISTORIC GROUND SURFACE BASED ON THE 7-1/2' USGS TOPOGRAPHIC MAP FOR OLIVE HILL, NC DATED 1968, REVISED 1994.
���� DRAWN.Y:lGHN CIASTaw DATE: D7/13/2016
MONITORING WELL DATA WAS OBTAINED FROM THE COMPREHENSIVE SITE ASSESSMENT REPORT PREPAREED BY SYNTERRA, DATED SEPTEMBER 2, 2015.
PROJECT MANAGER: CRAIG EADY
SEMORA, NORTH CAROLI NA
WATER SUPPLY WELL INFORMATION WAS OBTAINED FROM A LIST PROVIDED BY DUKE ENERGY PROGRESS
LAYOUT: FIG 1-47 (SECTION C-CHROMIUM VI)
MONITORING WELL WATER LEVELS WERE COLLECTED BY SYNTERRA ON DUNE 14, 2016.
07/28/2016 4:44 PM P:\Duke Energy Progress.1026\107. Roxboro Ash Basin Gw Assessment Plan\19.EG_CSASUP\Figures\DE ROXBORO OSA SUP SECTION CHROMIUM VI.dwg

A AN
(SOUTH)
J
0
0
x
U
N
az
Jz
w
02
O
J
3w
�
m
m
T
r
m
m z
a
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REGOLITH w
cn
ISOPLETH NOTE:
TOTAL CHROMIUM ISOPLETH CONTOURS BASED ON INTERPOLATION OF SITE WIDE DATA.
SAMPLE DATES:
CONCENTRATIONS SHOWN REFLECT MOST RECENT ANALYTICAL DATA COLLECTED FROM DECEMBER 2015, JANUARY 2015, APRIL 2016, AND JUNE 2016.
SOURCE INFORMATION:
EXISTING GROUND SURFACE BASED ON A DRAWING PROVIDED BY THE WSP GROUP TITLED "ROXBORO FINAL" DATED JUNE 8 2015.
HISTORIC GROUND SURFACE BASED ON THE 7-1/2' USGS TOPOGRAPHIC MAP FOR OLIVE HILL, NC DATED 1968, REVISED 1994.
MONITORING WELL DATA WAS OBTAINED FROM THE COMPREHENSIVE SITE ASSESSMENT REPORT PREPAREED BY SYNTERRA, DATED SEPTEMBER 2, 2015.
WATER SUPPLY WELL INFORMATION WAS OBTAINED FROM A LIST PROVIDED BY DUKE ENERGY PROGRESS
MONITORING WELL WATER LEVELS WERE COLLECTED BY SYNTERRA ON JUNE 14, 2016.
KE ENERGY ROXBORO STEAM ELECTRIC PLANT PROPERTY
ASH BASIN COMPLIANCE BOUNDARY
WEST ASH BASIN
WASTE BOUNDARY
EAST
BIO-REACTOR FGD
BUILDING WEST FGD POND POND
ASH/SOIL
ASH
<1 ASH
1.21
L7
WnTerra
J
(NORTH) I
I—
z
J
IL
SLUICE PIPE TRENCH
U
H
Ill0
W
tf1 1n M
J
W
V 2
ELECTRC
m
SUBSTATION
J W
a I-
_ _�REGOLITH
Q
1
TOTAL CHROMIUM 2L VALUE = 10 Ng/L
LEGEND
CHROMIUM ISOPLETH IN IJg/L
4.42 CHROMIUM CONCENTRATION IN pg/L
NS NOT SAMPLED
NA NOT ANALYZED
GROUND SURFACE
WELL CASING MONITORING
WELL SCHEMATIC
SCREENED INTERVAL
HORIZONTAL GRAPHIC SCALE GENERALIZED WATER TABLE
250 0 250 500
— — — INFERRED WATER TABLE
IN FEET
VERTICAL GRAPHIC SCALE R010 NCDEQ SUPPLY WELL SAMPLE ID
50 0 50 100 DW-46 RECEPTOR SURVEY WELL ID
VERTICAL EXAGGERATION 5X
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: JOHN CHASTAIN DATE: 07/13/2016
PROJECT MANAGER: CRAIG LADY
LAYOUT: FIG 1-48 (SECTION A -TOT CHROMIUM)
IN FE
ET MW-5BR MONITORING WELL
FIGURE 1-48
SITE CROSS-SECTION A -A' WITH TOTAL
CHROMIUM
DUKE ENERGY PROGRESS
ROXBORO STEAM ELECTRIC PLANT
SEMORA, NORTH CAROLINA

B
B'
(SOUTH)
(NORTH)
DUKE
ENERGY ROXBORO STEAM ELECTRIC PLANT PROPERTY
ASH BASIN COMPLIANCE BOUNDARY
EAST ASH BASIN
J
WASTE BOUNDARY
U O
Z =
U
w } z �
Km
M
LINED ASH LANDFILL
< T
jo-
Im d'
G o 0
tREGOLIT
d C4L'j
H
mm
ASH
77<1
REGOLITH --- -----
-------- --- — -- Q Q
3 3 3
?� ?�
zo
\
o_
COOLING TOWER
<1
--
\\ AASH////\\
—
aaa
aaa
�
-Y
—
0
<1 NS
��
��
0 0
< <
<1
z
0
<1
WATER INTAKE BASIN HYCO LAKE
<1
u
<1
A.
NS00
BEDROCK
�1
BEDROCK
BEDROCK
f
�
NS
TOTAL CHROMIUM 2L VALUE = 10 pg/L
LEGEND
CHROMIUM ISOPLETH IN
t Ng/L
2,23 CHROMIUM CONCENTRATION IN pg/L
NS NOTSAMPLED
NA NOT ANALYZED
GROUND SURFACE
MONITORING
WELLCASING
WELL SCHEMATIC
I
250
HORIZONOTAL GRAPHIC SCALE 500
SCREENED INTERVAL
GENERALIZED WATER TABLE
— — — INFERRED WATER TABLE
115-3--1 NCDEQ SUPPLY WELL SAMPLE ID
W'34 RECEPTOR SURVEY WELL ID
MW-13BR MONITORING WELL
IN FEET
VERTICAL GRAPHIC SCALE
50 0 50 100
IN FEET
VERTICAL EXAGGERATION 5X
FIGURE 1 -
SITE CROSS-SECTION BB' WITH TOTAL
ISOPLETH NOTE:
TOTAL CHROMIUM ISOPLETH CONTOURS BASED ON INTERPOLATION OF SITE WIDE DATA.
SAMPLE DATES:
CHROMIUM
148 RIVER STREET, SUITE 220
CONCENTRATIONS SHOWN REFLECT MOST RECENT ANALYTICAL DATA COLLECTED FROM DECEMBER 2015, JANUARY 2015, APRIL 2016, AND JUNE 2016.
GREENVILLE, SOUTH CAROLINA 29601
SOURCE INFORMATION:
PHONE[phone]
DUKE ENERGY PROGRESS
EXISTING GROUND SURFACE BASED ON A DRAWING PROVIDED BY THE WSP GROUP, TITLED "ROXBORO FINAL", DATED JUNE 8, 2015.
www.synterracorp.com
ROXBORO STEAM ELECTRIC PLANT
DRAWN BY: JOHN CHASTAIN DATE: 07/13/2016
HISTORIC GROUND SURFACE BASED ON THE 7-1/2' USGS TOPOGRAPHIC MAP FOR OLIVE HILL, NC DATED 1968, REVISED 1994.
����
MONITORING WELL DATA WAS OBTAINED FROM THE COMPREHENSIVE SITE ASSESSMENT REPORT PREPAREED BY SYNTERRA, DATED SEPTEMBER 2, 2015.
PROJECT MANAGER: CRAIG EADV
S EM 0 RA, NORTH CARO LI NA
WATER SUPPLY WELL INFORMATION WAS OBTAINED FROM A LIST PROVIDED BY DUKE ENERGY PROGRESS
LAYOUT: FIG 1-49 (SECTION B-TOT CHROMIUM)
MONITORING WELL WATER LEVELS WERE COLLECTED BY SYNTERRA ON JUNE 14, 2016.
07/28/20164:23 PM P:\Duke Energy Pro ress.1026
107. Roxboro
Ash Basin GW Assessment Plan\19.EG_CSASUP\Figures\DE ROXBORO CSA SUP SECTION CHROMIUM TorAL.dwg

-
- III
C
(SOUTH) (SOUTH)
(NORTH)
DUKE ENERGY ROXBORO STEAM ELECTRIC PLANT PROPERTY
ASH BASIN COMPLIANCE BOUNDARY
EAST ASH BASIN
WASTE BOUNDARY
LINED ASH MONOFILL
o
W W
U U
J Z Z W
� w w U
9 Z
U 00 V) p Y
UJ
jU mO� -,vASH
��
?
0
APPROXIMATE LANDFILL a
LINER ELEVATION ¢
C
N
r J
N w
3
a a
-
1
0
REGOLITH
o
� - - - - - - - - - - - -
J
EASTERN EXTENSION IMPOUNDMENT
N N
\ ASH
NS
2.6 ^\����
ASH
1O�
REGOLITH REGOLITH
00 COOLING
% �—
-- -- ---
TOWER POND
—
NA
1
BEDROCK
BEDROCK
BEDROCK
TOTAL CHROMIUM 2L VALUE = 10
Ng/L
LEGEND
CHROMIUM ISOPLETH IN Ng/L
<1 CHROMIUM CONCENTRATION IN pg/L
N$ NOT SAMPLED
'
NA NOT ANALYZED
MONITORING
WELLCASING WELLSCHEMATIC
ISCREENED
INTERVAL
HORIZONTAL GRAPHIC SCALE GENERALIZED WATER TABLE
250 0 250
500
— — — INFERRED WATER TABLE
IN FEET
FEET
R04 NCDEQ SUPPLY WELL SAMPLE ID
VERTICAL G
DW-26 RECEPTOR SURVEY WELL ID
50 OOSCALE
100
IN FEET
IMW l7BR MONITORING WELL
FIGURE 1-50
ISOPLETH NOTE:
VERTICAL EXAGGERATION 5X
SITE
CROSS—SECTION C—C' WITH TOTAL
TOTAL CHROMIUM ISOPLETH CONTOURS BASED ON INTERPOLATION OF SITE WIDE DATA.
SAMPLE DATES:
148 RIVER STREET, SUITE 220
CHROMIUM
CONCENTRATIONS SHOWN REFLECT MOST RECENT ANALYTICAL DATA COLLECTED FROM DECEMBER 2015, JANUARY 2015, APRIL 2016, AND JUNE 2016.
GREENVILLE, SOUTH CAROLINA 29601
SOURCE INFORMATION:
PHONE[phone]
DUKE ENERGY PROGRESS
EXISTING GROUND SURFACE BASED ON A DRAWING PROVIDED BY THE WSP GROUP, TITLED "ROXBORO FINAL", DATED JUNE 8, 2015.
www.synterracorp.com
ROXBORO STEAM ELECTRIC PLANT
HISTORIC GROUND SURFACE BASED ON THE 7-1/2' USGS TOPOGRAPHIC MAP FOR OLIVE HILL, NC DATED 1968, REVISED 1994.
C ���� DRAWN BY: JOHN CHASTAIN DATE:o7/13/201s
MONITORING WELL DATA WAS OBTAINED FROM THE COMPREHENSIVE SITE ASSESSMENT REPORT PREPAREED BY SYNTERRA, DATED SEPTEMBER 2, 2015.
S� PROJECT MANAGER: CRAIG LADY
SEMORA, NORTH CAROLI NA
WATER SUPPLY WELL INFORMATION WAS OBTAINED FROM A LIST PROVIDED BY DUKE ENERGY PROGRESS
LAYOUT: FIG 1-50 (SECTION C-TOT CHROMIUM)
MONITORING WELL WATER LEVELS WERE COLLECTED BY SYNTERRA ON JUNE 14, 2016.
07/28/20164:24 PM P:\Duke Energy Progress.1026\107. Roxboro Ash Basin GW Assessment Plan\19.EG_CSASUP\Figures\DE ROXBORD CSA SUP SECTION CHROMIUM TOTAL.dwg

A�
(SOUTH)
KE ENERGY ROXBORO STEAM ELECTRIC PLANT PROPERTY
J
0
O
2
U
CIO
ASH BASIN COMPLIANCE BOUNDARY
z
WEST ASH BASIN
Jz
Ow
w
WASTE BOUNDARY
3w
m
m
o
m
m
z
m
w
U
EAST m
w
BIO-REACTOR FGD
REGOLITH
BUILDING POND
WEST FGD POND
Q
—
m m
ASH/SOIL Q Q
N
�N.,
i -
i ASH
F,�7s,
�\
ISOPLETH NOTE:
COBALT ISOPLETH CONTOURS BASED ON INTERPOLATION OF SITE WIDE DATA.
SAMPLE DATES:
CONCENTRATIONS SHOWN REFLECT MOST RECENT ANALYTICAL DATA COLLECTED FROM DECEMBER 2015, JANUARY 2015, APRIL 2016, AND JUNE 2016.
SOURCE INFORMATION:
EXISTING GROUND SURFACE BASED ON A DRAWING PROVIDED BY THE WSP GROUP TITLED "ROXBORO FINAL" DATED JUNE 8 2015.
HISTORIC GROUND SURFACE BASED ON THE 7-1/2' USGS TOPOGRAPHIC MAP FOR OLIVE HILL, NC DATED 1968, REVISED 1994.
MONITORING WELL DATA WAS OBTAINED FROM THE COMPREHENSIVE SITE ASSESSMENT REPORT PREPAREED BY SYNTERRA, DATED SEPTEMBER 2, 2015.
WATER SUPPLY WELL INFORMATION WAS OBTAINED FROM A LIST PROVIDED BY DUKE ENERGY PROGRESS
MONITORING WELL WATER LEVELS WERE COLLECTED BY SYNTERRA ON JUNE 14, 2016.
L1P
synTerra
ASH
- A'
(NORTH)
I—
z
J
J
fl
SLUICE PIPE TRENCH
U
M
M M
F
m
p
U
w
QQQ
m co
�'o
Lo
W
V
2
ELECTRSUBSTATION
32.9
J W
Q
�REGOLITH
Q
COBALT 2L VALUE = 1 pg/L
LEGEND
COBALT ISOPLETH IN ug/L
4.42 COBALT CONCENTRATION IN pg/L
NS NOT SAMPLED
NA NOT ANALYZED
GROUND SURFACE
WELL CASING MONITORING
WELL SCHEMATIC
SCREENED INTERVAL
HORIZONTAL GRAPHIC SCALE GENERALIZED WATER TABLE
250 0 250 500
INFERRED WATER TABLE
IN FEET
VERTICAL GRAPHIC SCALE R010 NCDEQ SUPPLY WELL SAMPLE ID
50 0 50 100 DW-46 RECEPTOR SURVEY WELL ID
IN FEET MW-5BR MONITORING WELL
VERTICAL EXAGGERATION 5X
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
DRAWN BY: JOHN CHASTAIN DATE:07/13/2016
PROJECT MANAGER: CRAIG EADY
LAYOUT: FIG 1-51(SECTION A -COBALT)
FIGURE 1-51
SITE CROSS-SECTION A -A' WITH COBALT
DUKE ENERGY PROGRESS
ROXBORO STEAM ELECTRIC PLANT
SEMORA, NORTH CAROLINA

00
B -we�
B1
(SOUTH)
(NORTH)
DUKE ENERGY ROXBORO STEAM ELECTRIC PLANT PROPERTY
ASH BASIN COMPLIANCE BOUNDARY
EAST ASH BASIN
mil
WASTE BOUNDARY
U O
Z
W J
o
> Z O pmp z
M N m
LINED ASH LANDFILL
J
G o a G a O m
d N
APPROXIMATE LANDFILL m
REGOLITH
LINER ELEVATION
gm
ASH
mm�
— — —,
REGOLITH v---------
------- ------ a s
3
0
COOLING TOWER
5.8
-�
2 m
o
2.03
— �\�
ASH
mmm
aaa
as N
a
---�----
a
1
-- \\\ASH ��—��
0
0
< o
2.23
J
J
22
o
ASH
NS C9 C9
0
1
O$
WATER INTAKE BASIN HYCO LAKE
'
BEDROCK
JL
BEDROCK
BEDROCK
NS
'
COBALT 2L VALUE = 1 Ng/L
LEGEND
COBALT ISOPLETH IN ug/L
<1
2.23 COBALT CONCENTRATION IN pg/L
NS NOT SAMPLED
NOT ANALYZED
SURFACE
MONITORING
IGROUND
W S
ELLCA ING WELLSCHEMATIC
SCREENEDINTERVAL
250
HORIZONTALG
0
APHIC SC E
R AL
250 500
GENERALIZED WATER TABLE
— — — INFERRED WATER TABLE
R03 NCDEQ SUPPLY WELL SAMPLE
WELL ID ID
DW-34 RECEPTOR SURVEY W
MW-13BR MONITORING WELL
VERTICALIN FEET
GRAPHIC ALE
HIC SC
50 0 50 100
IN FEET
VERTICAL EXAGGERATION 5X
FIGURE 1-52
ISOPLETH NOTE:
7
COBALT ISOPLETH CONTOURS BASED ON INTERPOLATION OF SITE WIDE DATA.
SITE CROSS-SECTION B-B' WITH COBALT
SAMPLE DATES:
148 RIVER STREET, SUITE 220
CONCENTRATIONS SHOWN REFLECT MOST RECENT ANALYTICAL DATA COLLECTED FROM DECEMBER 2015, JANUARY 2015, APRIL 2016, AND JUNE 2016.
GREENVILLE, SOUTH CAROLINA 29601
SOURCE INFORMATION:
PHONE[phone]
DUKE ENERGY PROGRESS
EXISTING GROUND SURFACE BASED ON A DRAWING PROVIDED BY THE WSP GROUP, TITLED "ROXBORO FINAL", DATED JUNE 8, 2015.
www.synterracorp.com
ROXBORO STEAM ELECTRIC PLANT
DRAWN BY: JOHN CHASTAIN DATE: 07/13/2016
HISTORIC GROUND SURFACE BASED ON THE 7-1/2' USGS TOPOGRAPHIC MAP FOR OLIVE HILL, NC DATED 1968, REVISED 1994.
T
MONITORING WELL DATA WAS OBTAINED FROM THE COMPREHENSIVE SITE ASSESSMENT REPORT PREPAREED BY SYNTERRA, DATED SEPTEMBER 2, 2015.
S)M ���
PROJECT MANAGER:CRAIG EADV
SENORA, NORTH CAROLI NA
il
WATER SUPPLY WELL INFORMATION WAS OBTAINED FROM A LIST PROVIDED BY DUKE ENERGY PROGRESS
LAYOUT: FIG 1-52 (SECTION B-COBALT)
MONITORING WELL WATER LEVELS WERE COLLECTED BY SYNTERRA ON JUNE 14, 2016.
o7/2S/2016 4:46 PM P:\Duke Energy Progress.1026\107.
Roxboro
Ash Basin GW Assessment Plan\19.EG_CSASUP\Figures\DE ROXBORO CSA SUP SECTION COBALT.tlwg

C
C'
(SOUTH)
(NORTH)
DUKE ENERGY ROXBORO STEAM ELECTRIC PLANT PROPERTY
EAST ASH BASIN
WASTE BOUNDARY
LINED ASH MONOFILL
0
w w
J U U
Z Z UU
2 Lu LLI U
9 Z
U W
UJ 0 m
N U) h m
ASH
� �t7 03
---- 3
APPROXIMATE LANDFILL
N
0
G
C4
LINER ELEVATION
' J
3
a > m
REGOLITH
o
— —
(D
—
EASTERN EXTENSION IMPOUNDMENT
<O.S
ASH ��\ // ��\
N N
ASH ���_�� \�`�� � NA
g
—�-�i REGOLITH
C9 000OLING
REGOLITH
TOWER POND
- - - - -� - - - - - - - - - T - - - - -
PIS
NA
BEDROCK
BEDROCK
BEDROCK
COBALT 2L VALUE = 1 Ng/L
LEGEND
COBALT ISOPLETH IN ug/L
<1 COBALT CONCENTRATION IN pg/L
N$ NOT SAMPLED
NOT ANALYZED
GROUND SURFACE
MONITORING
WELLCASING WELL SCHEMATIC
ISCREENEDINTERVAL
HORIZONTAL GRAPHIC SCALE GENERALIZED WATER TABLE
250 0 250
500
— — — INFERRED WATER TABLE
IN FEET
RO4 NCDEQ SUPPLY WELL SAMPLE ID
VERTICAL GRAPHIC SCALE
DW-26 RECEPTOR SURVEY WELL ID
50 0 50
100
IN FEET
MW-17BR MONITORING WELL
ISOPLETH NOTE:
VERTICAL EXAGGERATION 5X
FIGURE 1-53
COBALT ISOPLETH CONTOURS BASED ON INTERPOLATION OF SITE WIDE DATA.
SITE CROSS-SECTION C-C' WITH COBALT
SAMPLE DATES:
148 RIVER STREET, SUITE 220
VIP
CONCENTRATIONS SHOWN REFLECT MOST RECENT ANALYTICAL DATA COLLECTED FROM DECEMBER 2015, JANUARY 2015, APRIL 2016, AND JUNE 2016. GREENVILLE, SOUTH CAROLINA 29601
SOURCE INFORMATION:
PHONE[phone]
DUKE ENERGY PROGRESS
EXISTING GROUND SURFACE BASED ON A DRAWING PROVIDED BY THE WSP GROUP, TITLED "ROXBORO FINAL",
DATED JUNE 8, 2015.
www.synterracorp.com
ROXBORO STEAM ELECTRIC PLANT
HISTORIC GROUND SURFACE BASED ON THE 7-1/2' USGS TOPOGRAPHIC MAP FOR OLIVE HILL, NC DATED 1968, REVISED 1994.
C ���ra DRAWN Bv:1..N CRASTAIN DATE: 07/13/2016
MONITORING WELL DATA WAS OBTAINED FROM THE COMPREHENSIVE SITE ASSESSMENT REPORT PREPAREED BY SYNTERRA, DATED SEPTEMBER 2, 2015. S� PROJECT MANAGER: CRAIG EADY
SEMORA, NORTH CAROLI NA
WATER SUPPLY WELL INFORMATION WAS OBTAINED FROM A LIST PROVIDED BY DUKE ENERGY PROGRESS
z LAYOUT: FIG 1-53 (SECTION C-COBALT
MONITORING WELL WATER LEVELS WERE COLLECTED BY SYNTERRA ON DUNE 14, 2016.
z
z z 07/28/2016 4:46 PM P:\Duke Energy Progress.1026\107. Roxboro Ash Basin GW Assessment Plan\19.EG_CSASUP\Figures\DE ROXBORO OSA SUP SECTION COBALT.dwg

F,k
F.l
(SOUTH)
KE ENERGY ROXBORO STEAM ELECTRIC PLANT PROPERTY
J
0
O
2
U
C
ASH BASIN COMPLIANCE BOUNDARY
z
WEST ASH BASIN
�z
Ow
w
WASTE BOUNDARY-
3w
m
m
m
U
EAST m
w
BIO-REACTOR FGD
REGOLITH
BUILDING POND
WEST FGD POND
Q
V
m
ASH/SOIL ¢
N
Big
p
i
3�0
ASH
�7O
O
7pn 'Opp
ISOPLETH NOTE:
IRON ISOPLETH CONTOURS BASED ON INTERPOLATION OF SITE WIDE DATA.
SAMPLE DATES:
CONCENTRATIONS SHOWN REFLECT MOST RECENT ANALYTICAL DATA COLLECTED FROM DECEMBER 2015, JANUARY 2015, APRIL 2016, AND JUNE 2016.
SOURCE INFORMATION:
EXISTING GROUND SURFACE BASED ON A DRAWING PROVIDED BY THE WSP GROUP TITLED "ROXBORO FINAL" DATED JUNE 8 2015.
HISTORIC GROUND SURFACE BASED ON THE 7-1/2' USGS TOPOGRAPHIC MAP FOR OLIVE HILL, NC DATED 1968, REVISED 1994.
MONITORING WELL DATA WAS OBTAINED FROM THE COMPREHENSIVE SITE ASSESSMENT REPORT PREPAREED BY SYNTERRA, DATED SEPTEMBER 2, 2015.
WATER SUPPLY WELL INFORMATION WAS OBTAINED FROM A LIST PROVIDED BY DUKE ENERGY PROGRESS
MONITORING WELL WATER LEVELS WERE COLLECTED BY SYNTERRA ON JUNE 14, 2016.
]► Eel a1i1]
Lw M CM M
SLUICE PIPE TRENCH
m QQQ 42'nco
Q
�
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V 2
ELECTRIC
310,000 ♦
SUBSTATION J
NA ASH
<10
'REGOLI�
Q
_
U
15;
i �n Ann -7-- N
594
L1P
synTerra
IRON 2L VALUE = 300 pg/L
LEGEND
IRON ISOPLETH IN ug/L
658 IRON CONCENTRATION IN pg/L
NS NOT SAMPLED
NA NOT ANALYZED
GROUND SURFACE
WELL CASING MONITORING
WELL SCHEMATIC
SCREENED INTERVAL
HORIZONTAL GRAPHIC SCALE GENERALIZED WATER TABLE
250 0 250 500
INFERRED WATER TABLE
IN FEET
VERTICAL GRAPHIC SCALE R010 NCDEQ SUPPLY WELL SAMPLE ID
50 0 50 100 DW-46 RECEPTOR SURVEY WELL ID
IN FEET MW-5BR MONITORING WELL
VERTICAL EXAGGERATION 5X
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
DRAWN BY: JOHN CHASTAIN DATE:07/13/2016
PROJECT MANAGER: CRAIG EADY
LAYOUT: FIG 1-54 (SECTION A -IRON)
FIGURE 1-54
SITE CROSS-SECTION A -A' WITH IRON
DUKE ENERGY PROGRESS
ROXBORO STEAM ELECTRIC PLANT
SEMORA, NORTH CAROLINA
I—
z
J
a
U
F
U
w
J
w
Q
w
rn

00
B -we�
B1
(SOUTH)
(NORTH)
DUKE ENERGY ROXBORO STEAM ELECTRIC PLANT PROPERTY
ASH BASIN COMPLIANCE BOUNDARY
EAST ASH BASIN
J
WASTE BOUNDARY
U O
Z
W J
o
> Z O pip z
M N m
LINED ASH LANDFILL
Jo-
G o a G a Q
M
CL
N
APPROXIMATE LANDFILL m
�
J
REGOLITH
�'
'� "
LINER ELEVATION
0
ASH � �
m
'
REGOLITH---------
----'-- —"—" Q Q
0
CooLING TOWER
5 030
\\�
2
2 890
ASH///��
Q Q Q
Q Q N
w
—
00
0
50
��
N
H
z
o
¢As�� &
I
300
ASH
1,620 NS C�7
0
WATER INTAKE BASIN HYCO LAKE
0
O
, 18,600
23
NS
d0
O
30,000 NS
-
BEDROCK
300
BEDROCK
BEDROCK
IRON 2L VALUE = 300 pg/L
LEGEND
IRON ISOPLETH IN ug/L
IRON CONCENTRATION IN lag/L
NS NOT SAMPLED
® NOT ANALYZED
GROUND SURFACE
MONITORING
W S
ELLCA ING WELLSCHEMATIC
SCREENEDINTERVAL
250
HORIZONTAL
0
GRAPHIC SCALE
250 500
GENERALIZED WATER TABLE
— — — INFERRED WATER TABLE
R03 NCDEQ SUPPLY WELL SAMPLE ID
DW-34 RECEPTOR SURVEY W ELL ID
MW-13BR MONITORING WELL
IN FEET
GRAPHIC ALE
VERTICAL HIC SC
50 0 50 100
IN FEET
VERTICAL EXAGGERATION 5X
FIGURE 1-55
ISOPLETH NOTE:
7
IRON ISOPLETH CONTOURS BASED ON INTERPOLATION OF SITE WIDE DATA.
SITE CROSS-SECTION B-B' WITH IRON
SAMPLE DATES:
148 RIVER STREET, SUITE 220
CONCENTRATIONS SHOWN REFLECT MOST RECENT ANALYTICAL DATA COLLECTED FROM DECEMBER 2015, JANUARY 2015, APRIL 2016,
AND JUNE 2016.
GREENVILLE, SOUTH CAROLINA 29601
SOURCE INFORMATION:
PHONE[phone]
DUKE KE
DU ENERGY PROGRESS
EXISTING GROUND SURFACE BASED ON A DRAWING PROVIDED BYTHE WSP GROUP, TITLED "ROXBORO FINAL", DATED JUNE 8, 2015.
www.synterracorp.com
ROXBOROSTEAM ELECTRIC PLANT
DRAWN BY: JOHN CHASTAIN DATE° 07/13/2016
HISTORIC GROUND SURFACE BASED ON THE 7-1/2' USGS TOPOGRAPHIC MAP FOR OLIVE HILL, NC DATED 1968, REVISED 1994.
Mer
MONITORING WELL DATA WAS OBTAINED FROM THE COMPREHENSIVE SITE ASSESSMENT REPORT PREPAREED BY SYNTERRA, DATED SEPTEMBER
2, 2015.
�
PROJECT MANAGER:CRAIG EADY
SEMORA, NORTH CAROLI NA
WATER SUPPLY WELL INFORMATION WAS OBTAINED FROM A LIST PROVIDED BY DUKE ENERGY PROGRESS
LAYOUT: FIG 1-55 (SECTION B-IRON)
MONITORING WELL WATER LEVELS WERE COLLECTED BY SYNTERRA ON JUNE 14, 2016.
07/28/2016 4:50 PM P:\Duke Energy Progress.1026\107.
Roxboro
Ash Basin GW Assessment Plan\19.EG_CSASUP\Figures\DE ROXBORO OSA SUP SECTION IRON.tlwg

C
C'
(SOUTH)
(NORTH)
DUKE ENERGY ROXBORO STEAM ELECTRIC PLANT PROPERTY
ASH BASIN COMPLIANCE BOUNDARY
EAST ASH BASIN
WASTE BOUNDARY
LINED ASH MONOFILL
0
w w
J U U
Z Z W
2 Lu uj U
Z
UJ UJ W
UJ 0 CO
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ASH
---- 3
APLANDFILL 0
N
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LINER ELEVATION
' J
3
Z11PROXIMATE
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o
EASTERN EXTENSION IMPOUNDMENT
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-
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��
O N N
300
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TOWER POND
— —
— — — — — — — — — — — — — — — T
NA
BEDROCK
BEDROCK
BEDROCK
88
IRON 2L VALUE = 300 �g/L
LEGEND
® IRON ISOPLETH IN ug/L
$�$ IRON CONCENTRATION IN lag/L
NS NOT SAMPLED
® NOT ANALYZED
GROUND SURFACE
MONITORING
WELL CASING WELL SCHEMATIC
SCREENEDINTERVAL
HORIZONTAL GRAPHIC SCALE GENERALIZED WATER TABLE
250 0 250
500
— — — INFERRED WATER TABLE
IN FEET
R04 NCDEQ SUPPLY WELL SAMPLE ID
VERTICAL GRAPHIC SCALE
DW-26 RECEPTOR SURVEY WELL ID
50 0 50
100
IN FEET
MW-17BR MONITORING WELL
ISOPLETH NOTE:
VERTICAL EXAGGERATION 5X
FIGURE 1-56
IRON ISOPLETH CONTOURS BASED ON INTERPOLATION OF SITE WIDE DATA.
SITE
CROSS-SECTION C-C' WITH IRON
SAMPLE DATES:
148 RIVER STREET, SUITE 220
VIPPHONE864-421-9999
CONCENTRATIONS SHOWN REFLECT MOST RECENT ANALYTICAL DATA COLLECTED FROM DECEMBER 2015, JANUARY 2015, APRIL 2016, AND JUNE 2016.
z zGREENVILLE, SOUTH CAROLINA 29601
SOURCE INFORMATION:
DUKE ENERGY PROGRESS
EXISTING GROUND SURFACE BASED ON A DRAWING PROVIDED BY THE WSP GROUP, TITLED "ROXBORO FINAL",
DATED JUNE 8, 2015.
www.synterracorp.com
ROXBORO STEAM ELECTRIC PLANT
HISTORIC GROUND SURFACE BASED ON THE 7-1/2' USGS TOPOGRAPHIC MAP FOR OLIVE HILL, NC DATED 1968, REVISED 1994.
DRAWN BY: JOHN CHASTAIN DATE: 07/13/2016
Te
MONITORING WELL DATA WAS OBTAINED FROM THE COMPREHENSIVE SITE ASSESSMENT REPORT PREPAREED BY SYNTERRA, DATED SEPTEMBER 2, 2015.
PROJECT MANAGER:CRAIG EADV
��
by
SENORA, NORTH CAROLI NA
WATER SUPPLY WELL INFORMATION WAS OBTAINED FROM A LIST PROVIDED BY DUKE ENERGY PROGRESS
LAYOUT: FIG 1-56 (SECTION C-IRON)
MONITORING WELL WATER LEVELS WERE COLLECTED BY SYNTERRA ON DUNE 14, 2016.
z
07/28/2016 4A9 PM P:\Duke Energy Progress.1026\107. Roxboro Ash Basin GW Assessment Plan\19.EG_CSASUP\Figures\DE ROXBORO OSA SUP SECTION IRON.dwg

F,k
FIN
(SOUTH)
KE ENERGY ROXBORO STEAM ELECTRIC PLANT PROPERTY
J
0
O
2
U
C
ASH BASIN COMPLIANCE BOUNDARY
z
WEST ASH BASIN
Jz
Ow
w
WASTE BOUNDARY
3w
m
m
o
m
m
z
m
w
U
EAST m
w
BIO-REACTOR FGD
REGOLITH
BUILDING POND
WEST FGD POND
Q
—
m m
ASH/SOIL Q Q
N
i
470 ��\ ASH
oo Fm
_ ,
ISOPLETH NOTE:
MANGANESE ISOPLETH CONTOURS BASED ON INTERPOLATION OF SITE WIDE DATA.
SAMPLE DATES:
CONCENTRATIONS SHOWN REFLECT MOST RECENT ANALYTICAL DATA COLLECTED FROM DECEMBER 2015, JANUARY 2015, APRIL 2016, AND JUNE 2016.
SOURCE INFORMATION:
EXISTING GROUND SURFACE BASED ON A DRAWING PROVIDED BY THE WSP GROUP TITLED "ROXBORO FINAL" DATED JUNE 8 2015.
HISTORIC GROUND SURFACE BASED ON THE 7-1/2' USGS TOPOGRAPHIC MAP FOR OLIVE HILL, NC DATED 1968, REVISED 1994.
MONITORING WELL DATA WAS OBTAINED FROM THE COMPREHENSIVE SITE ASSESSMENT REPORT PREPAREED BY SYNTERRA, DATED SEPTEMBER 2, 2015.
WATER SUPPLY WELL INFORMATION WAS OBTAINED FROM A LIST PROVIDED BY DUKE ENERGY PROGRESS
MONITORING WELL WATER LEVELS WERE COLLECTED BY SYNTERRA ON JUNE 14, 2016.
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z
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MANGANESE 2L VALUE = 50 Ng/L
LEGEND
MANGANESE ISOPLETH INNg/L
1.42 MANGANESE CONCENTRATION IN ug/L
NS NOT SAMPLED
NA NOT ANALYZED
GROUND SURFACE
WELL CASING MONITORING
WELL SCHEMATIC
SCREENED INTERVAL
HORIZONTAL GRAPHIC SCALE GENERALIZED WATER TABLE
250 0 250 500
INFERRED WATER TABLE
IN FEET
VERTICAL GRAPHIC SCALE R010 NCDEQ SUPPLY WELL SAMPLE ID
50 0 50 100 DW-46 RECEPTOR SURVEY WELL ID
IN FEET MW-5BR MONITORING WELL
VERTICAL EXAGGERATION 5X I FIGURE 1-57
SITE CROSS-SECTION A -A' WITH MANGANESE
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
DRAWN BY: JOHN CHASTAIN DATE:07/13/2016
PROJECT MANAGER: CRAIG EADY
LAYOUT: FIG 1-57 (SECTION A -MN
DUKE ENERGY PROGRESS
ROXBORO STEAM ELECTRIC PLANT
SEMORA, NORTH CAROLINA

00
B -we�
B1
(SOUTH)
(NORTH)
DUKE ENERGY ROXBORO STEAM ELECTRIC PLANT PROPERTY
ASH BASIN COMPLIANCE BOUNDARY
EAST ASH BASIN
J
WASTE BOUNDARY
U O
Z
W J
o
> Z O pip z
M N m
LINED ASH LANDFILL
Jo-
G o a G a Q
M
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LINER ELEVATION
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0
— — �.---------
REGOLITH
------- ------ Q Q
?� ?�
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COOLING TO
1180
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WATER INTAKE BASIN HYCO LAKE
7111*1
'OOO
3 0
6 NS
5,690 NA
01000
BEDROCK
BEDROCK
BEDROCK
NS
MANGANESE 2L VALUE = 50 Ng/L
50
LEGEND
MANGANESE ISOPLETH INNg/L
432 MANGANESE CONCENTRATION IN ug/L
'
NS NOT SAMPLED
NA NOT ANALYZED
GROUND SURFACE
MONITORING
W S
ELLCA ING WELLSCHEMATIC
SCREENEDINTERVAL
250
HORIZONTAL
0
GRAPHIC SCALE
250 500
GENERALIZED WATER TABLE
— — — INFERRED WATER TABLE
03 NCDEQ SUPPLY WELL SAMPLE ID
W-34 RECEPTOR SURVEY W
D WELL ID
MW-13BR MONITORING WELL
IN FEET
VERTICAL GRAPHIC
CRAP ALE
50 ICOOSC 100
IN FEET
VERTICAL EXAGGERATION 5X
FIGURE 1-58
ISOPLETH NOTE:
MANGANESE ISOPLETH CONTOURS BASED ON INTERPOLATION OF SITE WIDE DATA.
SITE CROSS-SECTION B-B' WITH MANGANESE
SAMPLE DATES:
VIP
148 RIVER STREET, SUITE 220
CONCENTRATIONS SHOWN REFLECT MOST RECENT ANALYTICAL DATA COLLECTED FROM DECEMBER 2015, JANUARY 2015, APRIL 2016,
AND JUNE 2016.
GREENVILLE, SOUTH CAROLINA 29601
SOURCE INFORMATION:
PHONE[phone]
DUKE ENERGY PROGRESS
EXISTING GROUND SURFACE BASED ON A DRAWING PROVIDED BY THE WSP GROUP, TITLED "ROXBORO FINAL", DATED JUNE 8, 2015.
www.synterracorp.com
ROXBORO STEAM ELECTRIC PLANT
DRAWN BY: JOHN CHASTAIN DATE: 07/13/2016
HISTORIC GROUND SURFACE BASED ON THE 7-1/2' USGS TOPOGRAPHIC MAP FOR OLIVE HILL, NC DATED 1968, REVISED 1994.
����
MONITORING WELL DATA WAS OBTAINED FROM THE COMPREHENSIVE SITE ASSESSMENT REPORT PREPAREED BY SYNTERRA, DATED SEPTEMBER
2, 2015.
PROJECT MANAGER: EADV
SENORA, NORTH CAROLI NA
WATER SUPPLY WELL INFORMATION WAS OBTAINED FROM A LIST PROVIDED BY DUKE ENERGY PROGRESS
LAYOUT: FIG 1-58 (SECTION B-MN)
MONITORING WELL WATER LEVELS WERE COLLECTED BY SYNTERRA ON JUNE 14, 2016.
07/28/2016 5:33 PM P:\Duke Energy Progress.1026\107.
Roxboro
Assn Basin GW Assessment Plan\19.EG_CSAsuP\Figures\DE ROXBORO CSA SUP SECTION MANGANESE.dwg

C
C'
(SOUTH)
(NORTH)
DUKE ENERGY ROXBORO STEAM ELECTRIC PLANT PROPERTY
ASH BASIN COMPLIANCE BOUNDARY
EAST ASH BASIN
WASTE BOUNDARY
LINED ASH MONOFILL
0
w w
J U U
Z Z W
2 Lu uj U
9 Z
U W w
UJ 0 m
N U) h m
ASH
---- 3
N APPROXIMATE LANDFILL
0
G
C4
LINER ELEVATION
r J
N w
3
a.< co
REGOLITH
o
(D
�` ��
> Q
3.7
EASTERN EXTENSION IMPOUNDMENT
-
i i
ASH ��\
N N
\
_ INS i� ��� ��
ASH �Z��i
------�—
��� _
1000
000OLING
TOWER POND
—
— — _J
- - - - - - - - - - -
NS
NA
BEDROCK
0
i
BEDROCK
IL
BEDROCK
i
50
MANGANESE 2L VALUE = 50 Ng/L
50
LEGEND
MANGANESE ISOPLETH INNg/L
144 MANGANESE CONCENTRATION IN ug/L
NS NOT SAMPLED
NA NOT ANALYZED
SURFACE
MONITORING
IGROUND
WELLCASING WELL SCHEMATIC
SCREENED INTERVAL
HORIZONTAL GRAPHIC SCALE GENERALIZED WATER TABLE
250 0 250
500
— — — INFERRED WATER TABLE
IN FEET
R04 NCDEQ SUPPLY WELL SAMPLE ID
VERTICAL GRAPHIC SCALE
DW-26 RECEPTOR SURVEY WELL ID
50 0 50
100
IN FEET
MW-17BR MONITORING WELL
ISOPLETH NOTE:
VERTICAL EXAGGERATION 5X
FIGURE 1-59
MANGANESE ISOPLETH CONTOURS BASED ON INTERPOLATION OF SITE WIDE DATA.
SITE CROSS-SECTION C-C' WITH MANGANESE
SAMPLE DATES:
148 RIVER STREET, SUITE 220
VIP
CONCENTRATIONS SHOWN REFLECT MOST RECENT ANALYTICAL DATA COLLECTED FROM DECEMBER 2015, JANUARY 2015, APRIL 2016, AND JUNE 2016.
GREENVILLE, SOUTH CAROLINA 29601
SOURCE INFORMATION:
PHONE[phone]
DUKE ENERGY PROGRESS
EXISTING GROUND SURFACE BASED ON A DRAWING PROVIDED BY THE WSP GROUP, TITLED "ROXBORO FINAL",
DATED JUNE 8, 2015.
www.synterracorp.com
ROXBORO STEAM ELECTRIC PLANT
HISTORIC GROUND SURFACE BASED ON THE 7-1/2' USGS TOPOGRAPHIC MAP FOR OLIVE HILL, NC DATED 1968, REVISED 1994.
Tertz DRAWN BY: JOHN CHASTAIN DATE: 07/13/2016
MONITORING WELL DATA WAS OBTAINED FROM THE COMPREHENSIVE SITE ASSESSMENT REPORT PREPAREED BY SYNTERRA, DATED SEPTEMBER 2, 2015.
PROJECT MANAGER:CRAIG EADY
syn
SEMORA, NORTH CAROLI NA
WATER SUPPLY WELL INFORMATION WAS OBTAINED FROM A LIST PROVIDED BY DUKE ENERGY PROGRESS
LAYOUT: FIG 1-59 (SECTION C-MN)
MONITORING WELL WATER LEVELS WERE COLLECTED BY SYNTERRA ON JUNE 14, 2016.
07/28/2016 5:34 PM P:\Duke Energy Progress.1026\107. Roxboro Assn Basin GW Assessment Plan\19.EG_CSAsuP\Figures\DE ROXBORO OSA SUP SECTION MANGANESE.dwg

F,k
F.Al
(SOUTH)
KE ENERGY ROXBORO STEAM ELECTRIC PLANT PROPERTY
]► Eel a1i1]
J
0
O
2
U
c
ASH BASIN COMPLIANCE BOUNDARY
z
WEST ASH BASIN
�z
Ow
w
WASTE BOUNDARY
3w
m
m
K
z
m
m
Q
J
U
EAST
m
M
m m
SLUICE PIPE TRENCH
U
w
O
BIO-REACTOR
BUILDING
FGD
POND
REGOLITH
Q
WEST FGD POND
2
m
m m
m
0
W
— --
ASHISOIL
Q
Q
Q
Q Q
to
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V
ELECTRIC
C
i — — — —
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2,520
/
SUBSTATION
Q
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ASH
440
_
_ �REGOLITH
z rn
a
°°o
i
U
216
f
----
2,190
.0�0
ISOPLETH NOTE:
STRONTIUM ISOPLETH CONTOURS BASED ON INTERPOLATION OF SITE WIDE DATA.
SAMPLE DATES:
CONCENTRATIONS SHOWN REFLECT MOST RECENT ANALYTICAL DATA COLLECTED FROM DECEMBER 2015, JANUARY 2015, APRIL 2016, AND JUNE 2016.
SOURCE INFORMATION:
EXISTING GROUND SURFACE BASED ON A DRAWING PROVIDED BY THE WSP GROUP TITLED "ROXBORO FINAL" DATED JUNE 8 2015.
HISTORIC GROUND SURFACE BASED ON THE 7-1/2' USGS TOPOGRAPHIC MAP FOR OLIVE HILL, NC DATED 1968, REVISED 1994.
MONITORING WELL DATA WAS OBTAINED FROM THE COMPREHENSIVE SITE ASSESSMENT REPORT PREPAREED BY SYNTERRA, DATED SEPTEMBER 2, 2015.
WATER SUPPLY WELL INFORMATION WAS OBTAINED FROM A LIST PROVIDED BY DUKE ENERGY PROGRESS
MONITORING WELL WATER LEVELS WERE COLLECTED BY SYNTERRA ON JUNE 14, 2016.
L1P
synTerra
STRONTIUM 2L VALUE = NOT ESTABLISHED
LEGEND
STRONTIUM ISOPLETH IN ug/L
440 STRONTIUM CONCENTRATION IN Ng/L
NS NOTSAMPLED
NA NOT ANALYZED
GROUND SURFACE
WELL CASING MONITORING
WELL SCHEMATIC
SCREENED INTERVAL
HORIZONTAL GRAPHIC SCALE GENERALIZED WATER TABLE
250 0 250 500
INFERRED WATER TABLE
IN FEET
VERTICAL GRAPHIC SCALE R010 NCDEQ SUPPLY WELL SAMPLE ID
50 0 50 100 DW-46 RECEPTOR SURVEY WELL ID
INFEET MW-5BR MONITORING WELL
VERTICAL EXAGGERATION 5X I FIGURE 1-60 I
SITE CROSS-SECTION A -A' WITH STRONTIUM
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
DRAWN BY: JOHN CHASTAIN DATE: 07/13/2016
PROJECT MANAGER: CRAIG EADY
LAYOUT: FIG 1-60 (SECTION A -STRONTIUM)
DUKE ENERGY PROGRESS
ROXBORO STEAM ELECTRIC PLANT
SEMORA, NORTH CAROLINA

00
B -we�
B1
(SOUTH)
(NORTH)
DUKE ENERGY ROXBORO STEAM ELECTRIC PLANT PROPERTY
ASH BASIN COMPLIANCE BOUNDARY
EAST ASH BASIN
J
WASTE BOUNDARY
U O
Z
W J
o
> Z O pip z
Nm
LINED ASH LANDFILL
j
fY o a G a Q
M
CL
N
APPROXIMATE LANDFILL m
�
J
REGOLITH
LINER ELEVATION
tY
0
ASH � �
m
REGOLITH
COOLING TOWER
/
22 v
a
1$
__ _
ASH
00 00 00
a a
O
180 NS
ASH ���—�
9,300
N N
r r
Z
O p
o 0
1,390
=�� �1000
c CC
G L
-
- -
Q J
ASH
4,360 NS
ov
of
WATER INTAKE BASIN HYCO LAKE
�0(
4,180 NA
464 NA —
BEDROCK
BEDROCK
BEDROCK'
NS
100
STRONTIUM 2L VALUE =NOT ESTABLISHED
LEGEND
STRONTIUM ISOPLETH IN ug/L
10Q
246 STRONTIUM CONCENTRATION IN Ng/L
NS NOT SAMPLED
100
NA NOT ANALYZED
�
�
GROUND SURFACE
WELLCASING WELLSCHEMATIC
tSCREENEDINTERVAL
250
HORIZONTAL
0
GRAPHIC SCALE
250 500
GENERALIZED WATER TABLE
— — — INFERRED WATER TABLE
R03 NCDEQ SUPPLY WELL SAMPLE
WELL ID ID
DW-34 RECEPTOR SURVEY W
MW-13BR MONITORING WELL
VERTICAL CRAP ALE
GRAPHIC SC
50 0 50 100
wFEEr
VERTICAL EXAGGERATION 5X
FIGURE 1-61
ISOPLETH NOTE:
STRONTIUM ISOPLETH CONTOURS BASED ON INTERPOLATION OF SITE WIDE DATA.
CROSS-SECTION B-B' WITH STRONTIUM
SAMPLE DATES:
SITE
148 RIVER STREET, SUITE 220
CONCENTRATIONS SHOWN REFLECT MOST RECENT ANALYTICAL DATA COLLECTED FROM DECEMBER 2015, JANUARY 2015, APRIL 2016,
AND JUNE 2016.
GREENVILLE, SOUTH CAROLINA 29601
SOURCE INFORMATION:
PHONE[phone]
DUKE ENERGY PROGRESS
EXISTING GROUND SURFACE BASED ON A DRAWING PROVIDED BY THE WSP GROUP, TITLED "ROXBORO FINAL", DATED JUNE 8, 2015.
www.synterracorp.com
ROXBORO STEAM ELECTRIC PLANT
DRAWN BY: 1OHN CHASTAIN DATE:07/13/2016MONITORING
HISTORIC GROUND SURFACE BASED ON THE 7-1/2' USGS TOPOGRAPHIC MAP FOR OLIVE HILL, NC DATED 1968, REVISED 1994.
WELL DATA WAS OBTAINED FROM THE COMPREHENSIVE SITE ASSESSMENT REPORT PREPAREED BY SYNTERRA, DATED SEPTEMBER
2, 2015.
VnT(��
PROJECT MANAGER: CRAIG EADY
SEMORA, NORTH CAROLI NA
WATER SUPPLY WELL INFORMATION WAS OBTAINED FROM A LIST PROVIDED BY DUKE ENERGY PROGRESS
LAYOUT: FIG 1-61(SECTION B-STRONTIUM)
MONITORING WELL WATER LEVELS WERE COLLECTED BY SYNTERRA ON JUNE 14, 2016.
07/28/2016 5:36 PM P:\Duke Energy Progress.1026\107.
Roxboro
Ash Basin GW Assessment Plan\19.EG_CSAsuP\Figures\DE ROXBORO OSA SUP SECTION STRONTIUM.deg

C-
(SOUTH)
0
w
J U
w
U
Z
2 Lu
Z
Lucn
w
U
�
�
�
Z
uj
Lu
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N
Lu
Lu00a'p
REGOLITH
DUKE ENERGY ROXBORO STEAM ELECTRIC PLANT PROPERTY
ASH BASIN COMPLIANCE BOUNDARY
EAST ASH BASIN
WASTE BOUNDARY
LINED ASH MONOFILL
ASH
'ROXIMATE LANDFILL
=R ELEVATION
ASH
\`1—// REGOLITH �� / 1,10I
�i7 _ REGOLITH s7,000� E ..
EASTERN EXTENSION IMPOUNDMENT —��
ASH
1000
ISOPLETH NOTE:
STRONTIUM ISOPLETH CONTOURS BASED ON INTERPOLATION OF SITE WIDE DATA.
SAMPLE DATES:
CONCENTRATIONS SHOWN REFLECT MOST RECENT ANALYTICAL DATA COLLECTED FROM DECEMBER 2015, JANUARY 2015, APRIL 2016, AND JUNE 2016.
SOURCE INFORMATION:
EXISTING GROUND SURFACE BASED ON A DRAWING PROVIDED BY THE WSP GROUP TITLED "ROXBORO FINAL" DATED JUNE 8 2015.
HISTORIC GROUND SURFACE BASED ON THE 7-1/2' USGS TOPOGRAPHIC MAP FOR OLIVE HILL, NC DATED 1968, REVISED 1994.
MONITORING WELL DATA WAS OBTAINED FROM THE COMPREHENSIVE SITE ASSESSMENT REPORT PREPAREED BY SYNTERRA, DATED SEPTEMBER 2, 2015.
WATER SUPPLY WELL INFORMATION WAS OBTAINED FROM A LIST PROVIDED BY DUKE ENERGY PROGRESS
MONITORING WELL WATER LEVELS WERE COLLECTED BY SYNTERRA ON JUNE 14, 2016.
L�
synTerra
C9
HORIZONTAL GRAPHIC SCALE
250 0 250 500
IN FEET
VERTICAL GRAPHIC SCALE
50 0 50 100
IN FEET
C'
(NORTH)
COOLING
TOWER POND
BEDROCK
STRONTIUM 2L VALUE = NOT ESTABLISHED
LEGEND
STRONTIUM ISOPLETH IN ug/L
440 STRONTIUM CONCENTRATION IN Ng/L
NS NOTSAMPLED
NA NOT ANALYZED
1 GROUND SURFACE
WELLCASING MONITORING
WELL SCHEMATIC
SCREENED INTERVAL
GENERALIZED WATER TABLE
INFERRED WATER TABLE
R04 NCDEQ SUPPLY WELL SAMPLE ID
DW-26 RECEPTOR SURVEY WELL ID
MW-17BR MONITORING WELL
VERTICAL EXAGGERATION 5X I FIGURE 1-62 I
SITE CROSS-SECTION C-C' WITH STRONTIUM
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
DRAWN BY: JOHN CHASTAIN DATE:07/13/2016
PROJECT MANAGER: CRAIG EADY
LAYOUT: FIG 1-62 (SECTION C-STRONTIUM)
DUKE ENERGY PROGRESS
ROXBORO STEAM ELECTRIC PLANT
SEMORA, NORTH CAROLINA

F,k
FIN
(SOUTH)
DUKE ENERGY ROXBORO STEAM ELECTRIC PLANT PROPERTY
J
O
O
2
U
C ASH BASIN COMPLIANCE BOUNDARY
z WEST ASH BASIN
Jz
Ow
w WASTE BOUNDARY
� W m m
o m m Z
m U w L
EAST m ry c
w BIO-REACTOR FGD
REGOLITH Q BUILDING WEST FGD POND POND m L
ASH/SOIL Q Q Q
ASH 3,000
F ASH
\�_�4,100
500 ;
ISOPLETH NOTE:
TOTAL DISSOLVED SOLIDS (TDS) ISOPLETH CONTOURS BASED ON INTERPOLATION OF SITE WIDE DATA.
SAMPLE DATES:
CONCENTRATIONS SHOWN REFLECT MOST RECENT ANALYTICAL DATA COLLECTED FROM DECEMBER 2015, JANUARY 2015, APRIL 2016, AND JUNE 2016.
SOURCE INFORMATION:
EXISTING GROUND SURFACE BASED ON A DRAWING PROVIDED BY THE WSP GROUP TITLED "ROXBORO FINAL" DATED JUNE 8 2015.
HISTORIC GROUND SURFACE BASED ON THE 7-1/2' USGS TOPOGRAPHIC MAP FOR OLIVE HILL, NC DATED 1968, REVISED 1994.
MONITORING WELL DATA WAS OBTAINED FROM THE COMPREHENSIVE SITE ASSESSMENT REPORT PREPAREED BY SYNTERRA, DATED SEPTEMBER 2, 2015.
WATER SUPPLY WELL INFORMATION WAS OBTAINED FROM A LIST PROVIDED BY DUKE ENERGY PROGRESS
MONITORING WELL WATER LEVELS WERE COLLECTED BY SYNTERRA ON JUNE 14, 2016.
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SLUICE PIPE TRENCH
co T
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SUBSTATION J
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TOTAL DISSOLVED SOLIDS (TDS
2L VALUE = 500 mg/L
LEGEND
® TDS ISOPLETH IN ug/L
736 TDS CONCENTRATION IN ug/L
NS NOT SAMPLED
NA NOT ANALYZED
;MONIGROUND SURFACE
TORING
ELL MONITORING
WELL SCHEMATIC
SCREENEDINTERVAL
I—
z
J
a
U
F
U
w
J
w
Q
w
F
HORIZONTAL GRAPHIC SCALE
GENERALIZED WATER TABLE
250 0
250 500
- - - INFERRED WATER TABLE
am
IN FEET
R010
NCDEQ SUPPLY WELL SAMPLE ID
VERTICAL
GRAPHIC SCALE
DW-46
RECEPTOR SURVEY WELL ID
50 0
50 100
IN FEET
MW-5BR MONITORING WELL
FIGURE 1-63
VERTICAL EXAGGERATION 5X
SITE CROSS-SECTION A -A' WITH TOTAL
DISSOLVED SOLIDS (TDS)
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE[phone]
DUKE ENERGY PROGRESS
www.synterracorp.com
ROXBORO STEAM ELECTRIC PLANT
DRAWN BY: JOHN CHASTAIN DATE: 07/13/2016
PROJECT MANAGER[ CRAIG EADY
SEMORA, NORTH CAROLINA
LAYOUT: FIG 1-63 (SECTION A-TDS)

B -we�
B1
(SOUTH)
(NORTH)
DUKE ENERGY ROXBORO STEAM ELECTRIC PLANT PROPERTY
ASH BASIN COMPLIANCE BOUNDARY
EAST ASH BASIN
J
WASTE BOUNDARY
U O
Z
W J
o
> Z O pip z
M N m
LINED ASH LANDFILL
Jo-
G o a G a Q
m
CL
N
APPROXIMATE LANDFILL m
�
J
REGOLITH
2
LINER ELEVATION
ASH � �
m
REGOLITH
z
COOLING TOWER
400
2
380
-- —\�
ASH
m m m
aaa
m m
as d
F-
410 NS
— \\\ASH ��-��
a
0 0
3,300
z
&
ASH
C9
2,000 NS'1��
p
5Q0
WATER INTAKE BASIN HYCO LAKE
22000•
NS
5 ��
77
BEDROCK
480
z
7
BEDROCK
BEDROCK'
NS
TOTAL DISSOLVED SOLIDS (TDS)
2L VALUE = 500 mg/L
LEGEND
TDS ISOPLETH IN pWL
736 TDS CONCENTRATION IN ug/L
NS NOT SAMPLED
KA NOT ANALYZED
GROUND SURFACE
MONITORING
W EAS ING WELLSCHEMATIC
SCREENEDINTERVAL
R
HORIZONTALG APHIC
250 0
SC E
AL
250 500
GENERALIZED WATER TABLE
— — INFERRED WATER TABLE
R03 NCDEQ SUPPLY WELL SAMPLE
WELL ID ID
DW-34 RECEPTOR SURVEY W
MW-13BR MONITORING WELL
IN FEET I—
VERTICALGRAPHIC ALE
HIC SC
50 0 50 100
IN FEET
VERTICAL EXAGGERATION 5X
FIGURE 1-64
SITE CROSS-SECTION B-B' WITH TOTAL
ISOPLETH NOTE:
TOTAL DISSOLVED SOLIDS (TDS) ISOPLETH CONTOURS BASED ON INTERPOLATION OF SITE WIDE DATA.
SAMPLE DATES:
DISSOLVED SOLIDS (TDS)
148RIVER STREET, SUITE 22O
CONCENTRATIONS SHOWN REFLECT MOST RECENT ANALYTICAL DATA COLLECTED FROM DECEMBER 2015, JANUARY 2015, APRIL 2016, AND JUNE 2016.
GREENVILLE, SOUTH CAROLINA 29601
SOURCE INFORMATION:
PHONE[phone]
DUKE ENERGY PROGRESS
EXISTING GROUND SURFACE BASED ON A DRAWING PROVIDED BY THE WSP GROUP, TITLED "ROXBORO FINAL", DATED JUNE 8, 2015.
www.synterracorp.com
ROXBORO STEAM ELECTRIC PLANT
DRAWN BY: JOHN CHASTAIN
DATE° 07/13/2016
HISTORIC GROUND SURFACE BASED ON THE 7-1/2' USGS TOPOGRAPHIC MAP FOR OLIVE HILL, NC DATED 1968, REVISED 1994.
����
MONITORING WELL DATA WAS OBTAINED FROM THE COMPREHENSIVE SITE ASSESSMENT REPORT PREPAREED BY SYNTERRA, DATED SEPTEMBER
2, 2015.
synPROJECT
MANAGER: EADV
SENORA, NORTH CAROLI NA
WATER SUPPLY WELL INFORMATION WAS OBTAINED FROM A LIST PROVIDED BY DUKE ENERGY PROGRESS
LAYOUT: FIG 1-64 (SECTION B-TDS
MONITORING WELL WATER LEVELS WERE COLLECTED BY SYNTERRA ON JUNE 14, 2016.
07/28/2016 5:40 PM P:\Duke Energy Progress.1026\107. Roxboro
Ash Basin GW Assessment Plan\19.EG_CSASUP\Figures\DE ROXBORO OSA SUP SECTION TDS.bwg

C
C'
(SOUTH)
(NORTH)
DUKE ENERGY ROXBORO STEAM ELECTRIC PLANT PROPERTY
ASH BASIN COMPLIANCE BOUNDARY
EAST ASH BASIN
WASTE BOUNDARY
LINED ASH MONOFILL
0
I11 w
J U U
Z Z W
2 Lu uj U
9 Z
U W w
UJ 0 m
N U) h m
ASH
---- 3
N APPROXIMATE LANDFILL
0
G
C4
LINER ELEVATION
r J
N w
3
a.<
<o
REGOLITH
o
--
0
EASTERN EXTENSION IMPOUNDMENT
__
—~-- i
> Q
200 390
-
NS ASH ��� �� ��� OfN N
�. ASH
_---_
---� �`i
(9 0 COOLING
TOWER POND
INS
500
NA
pp --- -
BEDROCK
500
BEDROCK
BEDROCK
BEDROCK
TOTAL DISSOLVED SOLIDS (TDS)
2L VALUE = 500
mg/L
LEGEND
€ TDS ISOPLETH IN ug/L
736 TDS CONCENTRATION IN ug/L
NS NOT SAMPLED
KA
NOT ANALYZED
GROUND SURFACE
MONITORING
�WELLCASING WELL SCHEMATIC
SCREENED INTERVAL
HORIZONTAL GRAPHIC
SCALE GENERALIZED WATER TABLE
250 0
250 500
— — — INFERRED WATER TABLE
IN FEET
R04 NCDEQ SUPPLY WELL SAMPLE ID
VERTICAL GRAPHIC
SCALE DW-26 RECEPTOR SURVEY WELL ID
50 0
50 100
IN
MW-176R MONITORING WELL
FIGURE 1-65
ISOPLETH NOTE:
VERTICAL EXAGGERATION 5X
SITE CROSS-SECTION C-C' WITH TOTAL
TOTAL DISSOLVED SOLIDS (TDS) ISOPLETH CONTOURS BASED ON INTERPOLATION OF SITE WIDE DATA.
DISSOLVED SOLIDS
SAMPLE DATES:
148RIVER STREET,SUITE22O
VIP
(TDS)
CONCENTRATIONS SHOWN REFLECT MOST RECENT ANALYTICAL DATA COLLECTED FROM DECEMBER 2015, JANUARY 2015, APRIL 2016, AND DUNE 2016.
GREENVILLE, SOUTH CAROLINA 29601
SOURCE INFORMATION:
PHONE[phone]
DUKE ENERGY PROGRESS
EXISTING GROUND SURFACE BASED ON A DRAWING PROVIDED BY THE WSP GROUP, TITLED "ROXBORO FINAL",
DATED JUNE 8, 2015.
www.synterracorp.com
ROXBORO STEAM ELECTRIC PLANT
HISTORIC GROUND SURFACE BASED ON THE 7-1/2' USGS TOPOGRAPHIC MAP FOR OLIVE HILL, NC DATED 1968, REVISED 1994.
1 ���� DRAWN BY: JOHN CHASTAIN DATE° 07/13/2016
MONITORING WELL DATA WAS OBTAINED FROM THE COMPREHENSIVE SITE ASSESSMENT REPORT PREPAREED BY SYNTERRA, DATED SEPTEMBER 2, 2015.
lz
PROJECT MANAGER:CRAIG EADY
SEMORA, NORTH CAROLI NA
WATER SUPPLY WELL INFORMATION WAS OBTAINED FROM A LIST PROVIDED BY DUKE ENERGY PROGRESS
LAYOUT: FIG 1-65 (SECTION C-TDS)
MONITORING WELL WATER LEVELS WERE COLLECTED BY SYNTERRA ON DUNE 14, 2016.
z
z z
07/28/2016 5:42 PM P:\Duke Energy Progress.1026\107. Roxboro Ash Basin GW Assessment Plan\19.EG_CSASUP\Figures\DE ROXBORO OSA SUP SECTION TDS.bwg

00
B -we�
B1
(SOUTH)
(NORTH)
DUKE ENERGY ROXBORO STEAM ELECTRIC PLANT PROPERTY
ASH BASIN COMPLIANCE BOUNDARY
EAST ASH BASIN
J
WASTE BOUNDARY
U O
Z
W J
o
> Z O pip z
M N m
LINED ASH LANDFILL
Jo-
G o a 02 a Q
M
CL
N
APPROXIMATE LANDFILL m
�
J
REGOLITH
2
LINER ELEVATION
ASH � �
m
REGOLITH
z
COOLING TOWER
0.347
0.602
�\
ASH �i�\
¢ ¢ a
coM44 0.
w
<5
��—��
\ASH 1.07
-
3
� <
J
7- SH
0.371 NS
ov
WATER INTAKE BASIN HYCO LAKE
<0.3
19.1
NS
0.556 NA
BEDROCK
_
BEDROCK
<0.3
6.3
BEDROCK'
NS
a3s
VANADIUM IMAC VALUE = 0.3 Ng/L
LEGEND
10."31
VANADIUM ISOPLETH IN ug/L
VANADIUM CONCENTRATION IN Ng/L
•0.3
NS NOT SAMPLED
NA NOT ANALYZED
GROUND SURFACE
WELLCASING MONITORING
BEDROCK
WELLSCHEMATIC
ISCREENEDINTERVAL
250
HORIZONTAL GRAPHIC SCALE
0 250 500
GENERALIZED WATER TABLE
— — — INFERRED WATER TABLE
� �
� � � �
IN
50
FEET
SC
VERTICAL GRAPHIC ALE
0 50 100
R03 NCDEQ SUPPLY WELL SAMPLE
WELL ID ID
DW-34 RECEPTOR SURVEY W
MW-13BR MONITORING WELL
IN FEET
VERTICAL EXAGGERATION 5X
FIGURE 1-67
ISOPLETH NOTE:
7
VANADIUM ISOPLETH CONTOURS BASED ON INTERPOLATION OF SITE WIDE DATA.
CROSS-SECTION B-B' WITH VANADIUM
SAMPLE DATES:
SITE
148 RIVER STREET, SUITE 220
CONCENTRATIONS SHOWN REFLECT MOST RECENT ANALYTICAL DATA COLLECTED FROM DECEMBER 2015, JANUARY 2015, APRIL 2016,
AND JUNE 2016.
GREENVILLE, SOUTH CAROLINA 29601
SOURCE INFORMATION:
PHONE[phone]
DUKE ENERGY PROGRESS
EXISTING GROUND SURFACE BASED ON A DRAWING PROVIDED BY THE WSP GROUP, TITLED "ROXBORO FINAL", DATED JUNE 8, 2015.
www.synterracorp.com
ROXBORO STEAM ELECTRIC PLANT
DRAWN BY: JOHN CHASTAIN DATE^ 07/13/2016
HISTORIC GROUND SURFACE BASED ON THE 7-1/2' USGS TOPOGRAPHIC MAP FOR OLIVE HILL, NC DATED 1968, REVISED 1994.
����
MONITORING WELL DATA WAS OBTAINED FROM THE COMPREHENSIVE SITE ASSESSMENT REPORT PREPAREED BY SYNTERRA, DATED SEPTEMBER
2, 2015.
synPROJECT
MANAGER: EADV
SENORA, NORTH CAROLI NA
WATER SUPPLY WELL INFORMATION WAS OBTAINED FROM A LIST PROVIDED BY DUKE ENERGY PROGRESS
LAYOUT: FIG 1-67 (SECTION B-VAN)
MONITORING WELL WATER LEVELS WERE COLLECTED BY SYNTERRA ON DUNE 14, 2016.
07/28/2016 5:44 PM P:\Duke Energy Progress.1026\107.
Roxboro
Ash Basin Gw Assessment Plan\19.EG_CSASUP\Figures\DE ROXBORO OSA SUP SECTION VANADIUM.owg

C
C'
(SOUTH)
(NORTH)
DUKE ENERGY ROXBORO STEAM ELECTRIC PLANT PROPERTY
ASH BASIN COMPLIANCE BOUNDARY
EAST ASH BASIN
WASTE BOUNDARY
LINED ASH MONOFILL
0
w w
J U U
Z Z w
2 w wl U
Z
UJw
UJ d'
UJ 0 CO
N U) h m
ASH
� �t7 ��
---- 3
APPROXIMATE LANDFILL
N
0
G
C4
LINZ11ER ELEVATION
r J
N w
3
d < co
REGOLITH
o
—
EASTERN EXTENSION IMPOUNDMENT
�`~- i
> Q
5.9
NS /, \ ASH
�/ ���_�� ��`�� ��// NA
ASH �/
\ / REGOLITH REGOLITH
0 COOLING
TOWER POND
NA
■1
BEDROCK
1.0
3
BEDROCK
BEDROCK
NNW—
■0.3■
0.3
VANADIUM IMAC VALUE = 0.3
Ng/L
LEGEND
VANADIUM ISOPLETH IN ug/L
1.38 VANADIUM CONCENTRATION IN ug/L
NS NOT SAMPLED
NA NOT ANALYZED
GROUND SURFACE
WELL CASING MONITORING
WELL SCHEMATIC
SCREENED INTERVAL
HORIZONTAL GRAPHIC SCALE GENERALIZED WATER TABLE
250 0 250
500
— — — INFERRED WATER TABLE
IN FEET
R04 NCDEQ SUPPLY WELL SAMPLE ID
VERTICAL GRAPHIC SCALE
DW-26 RECEPTOR SURVEY WELL ID
50 0 50
100
IN FEET
MW-17BR MONITORING WELL
ISOPLETH NOTE:
VERTICAL EXAGGERATION 5X
FIGURE 1-68
VANADIUM ISOPLETH CONTOURS BASED ON INTERPOLATION OF SITE WIDE DATA.
CROSS-SECTION C-C' WITH VANADIUM
SAMPLE DATES:
SITE
z 148 RIVER STREET, SUITE 220
VIP
CONCENTRATIONS SHOWN REFLECT MOST RECENT ANALYTICAL DATA COLLECTED FROM DECEMBER 2015, JANUARY 2015, APRIL 2016, AND JUNE 2016.
zGREENVILLE, SOUTH CAROLINA 29601
SOURCE INFORMATION:
z PHONE[phone]
DUKE ENERGY PROGRESS
EXISTING GROUND SURFACE BASED ON A DRAWING PROVIDED BY THE WSP GROUP, TITLED "ROXBORO FINAL",
DATED JUNE 8, 2015.
www.synterracorp.com
ROXBORO STEAM ELECTRIC PLANT
HISTORIC GROUND SURFACE BASED ON THE 7-1/2' USGS TOPOGRAPHIC MAP FOR OLIVE HILL, NC DATED 1968, REVISED 1994. z z
���� DRAWN BY: JOHN CHASTAIN DATE 07/13/2016
MONITORING WELL DATA WAS OBTAINED FROM THE COMPREHENSIVE SITE ASSESSMENT REPORT PREPAREED BY SYNTERRA, DATED SEPTEMBER 2, 2015.
PROJECT MANAGER: CRAIG EADY
SEMORA, NORTH CAROLI NA
WATER SUPPLY WELL INFORMATION WAS OBTAINED FROM A LIST PROVIDED BY DUKE ENERGY PROGRESS
LAYOUT: FIG 1-68 (SECTION C-VAN)
MONITORING WELL WATER LEVELS WERE COLLECTED BY SYNTERRA ON JUNE 14, 2016.
07/28/2016 5:45 PM P:\Duke Energy Progress.1026\107. Roxboro Ash Basin GW Assessment Plan\19.EG_CSASUP\Figures\DE ROXBORO OSA SUP SECTION VANADIUM.owg

*� 5
80%
p�
' 60%
4096
2096
o a o
Lip
synTerra
Legend
■ ABMVV-05D
0 B -01
L VV-02
■ VV-03
VV-04
p VV-05
p MVV-05D
❑ MVV-15D
MVV-18D
MVV-22D
NOTES: sz ; symbol indicates
difference in ion charge balance
>20%
80%
60% p
40%
—C
l ---Jp
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www. synterracorp.com
DRAWN BY: J. GILMER DATE: JULY 2016
PROJECT MANAGER: C. EADY
LAYOUT:
FILEPATH:
P:\Duke Energy Progmss.1026\10�. Roxboro Ash Basin GW Assessment Plan\
19.EG_CSASUP\Figures\Piper Diagrams
20%
FIGURE 1-69
PIPER DIAGRAM —TRANSITION ZONE
(JANUARY, APRIL, & JUNE 2016)
ROXBORO STEAM ELECTRIC PLANT
1700 DUNNAWAY ROAD
SEMORA, NORTH CAROLINA 27343

C,11-el
Al;��Z-20%
k
f° �a —R
I 7P
Off O�
a o-
.e--Ca—
410
synTerra
�' S0
0° ��°
— CI i
NOTES: Red symbol indicates
difference in ion charge balance
>20%
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: J. GILMER DATE: JULY 2016
PROJECT MANAGER: C. EADY
LAYOUT:
FILEPATH:
P:\Duke Energy Progmss.1026\10�. Roxboro Ash Basin GW Assessment Plan\
19.EG—CSASUP\Figures\Piper Diagrams
Legend
❑ ABMW-01 BR
p ABMW-02BR
L ABMW-03BR
* ABMW-03BRL
V ABMW-04BR
p ABMW-06BR
Z ABMW-07BR
L ABMW-07BRL
❑ BG-01 BR
OW-01
CW-02D
CW-03D
❑ MW-01 BR
MW-02BR
L MW-03BR
P MW-04BR
C) MW-04BRL
Z MW-05BR
❑ MW-09BR
MW-10BR
❑ MW-13BR
p MW-14BR
Z� MW-15BR
* MW-16BR
V MW-17BR
S MW-1 SBR
0 MW-19BRL
❑ MW-20BRL
MW-22BR
!s MW-23BR
MW-24BR
MW-25BR
MW-26BR
FIGURE 1-70
PIPER DIAGRAM — BEDROCK
(JANUARY, APRIL, & JUNE 2016)
ROXBORO STEAM ELECTRIC PLANT
1700 DUNNAWAY ROAD
SEMORA, NORTH CAROLINA 27343

75
a

I` � •
i \
•
\
1
� 1
1
1
1
1
1
1
CL-02 �
EAST ASH 1
BASIN EXTENSO
IMPOUNUMENI
1
1
1
4f
1
1
1
1
1
II
of
N NL-04
* ol 1, At
h
nTerra
r
.q
I, w: -"r "w. %wrp r- N". 'C -
im"o
GRAPHIC SCALE
100 50 0 100 200
IN FEET
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.svnterracoro.com
DRAWN BY: B. YOUNG DATE: 07/27/2016
PROJECT MANAGER: C. EADY
CHECKED BY: C. EADY
LEGEND
® SAMPLE LOCATION
ROXBORO LINED LANDFILL
ROXBORO UNLINED LANDFILL
ASH BASIN BOUNDARY
L _ _ _ _ !ASH BASIN COMPLIANCE BOUNDARY
NOTES:
MEDIA SAMPLES COLLECTED JUNE 2016 BY SYNTERRA.
2014 AERIAL ORTHOPHOTOGRAPHY OBTAINED FROM USDA NRCS
GEOSPATIAL DATA GATEWAY
(https://gdg.sc.egov.usda.gov/GDGOrder.aspx).
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA
STATE PLANE COORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 3-1
SAMPLE LOCATION MAP
EAST ASH BASIN EXTENSION IMPOUNDMENT
ROXBORO STEAM ELECTRIC PLANT
SEMORA, NORTH CAROLINA