NC0005363_CAP 2 FIGURES_20160201

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FIGURE ES -1
SITE CONCEPTUAL MODEL - PLAN VIEW

NORTHWEST
WETLAND
RECHARGE
ZONE RAIL SPUR DRAINAGE DITCH
SURFICIAL & YORKTOWN UNITS
ASH BASIN (SOURCE)
I_M
ASH
r
COMPOSITE FINAL COVER SYSTEM
DRAINAGE DITCH
COOLING POND AND
JACOB CREEK WETLANDS
========___ ========_ AREA OF CONCENTRATIONS IN =
--CONFINING LAYER = GROUNDWATER ABOVENC2LSTANDARD
=== PEE DEE UNIT ------------
====--c--========
-------------------------_ _----_----__-_
SOUTHEAST
LEGEND
Q ASH
Q ASH PORE WATER
GROUNDWATER ABOVE NC 2L STANDARD
FOR BORON
GROUNDWATER BELOW NC 2L STANDARD
FOR BORON
INFERRED OR MEASURED
APPROXIMATE WATER TABLE
INFERRED OR MEASURED APPROXIMATE
V ASH PORE WATER TABLE
— — LITHOLOGIC CONTACT
NOTE:
DASHED GROUNDWATER FLOW DIRECTION ARROWS
INDICATE INFERRED FROM TOPOGRAPHY
BLACK CREEK REGIONAL WATER SUPPLY AQUIFER
NOT TO SCALE FIGURE ES -2
148 RIVER STREET, SUITE 220 CAP IN PLACE
GREENVILLE, SOUTH CAROLINA 29601 CROSS-SECTION SITE CONCEPTUAL MODEL
PHONE terrac 1-9999 W.H. WEATHERSPOON PLANT
www. syn t e rra co rp. co m
Terra DRAWN BY JOHNCHASTAIN DATE,2,2„20,5 LUMBERTON, NORTH CAROLINA
PROJECT MANAGER: MARK TAYLOR
LAYOUT: FIG ES -2 (SOURCE LEFT)

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FIGURE 1-1
SITE LOCATION MAP
REENSBOR0 WEATHERSPOON POWER PLANT
*RALEIGH
REENVILLE 491 POWER PLANT RD
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Terra WEATHELANT LUMBERTON, NORTH CAROLINA
POWER PLANT
ROBESON SOUTH EAST LUMBERTON, NC QUADRANGLE
COUNTY
148 RIVER STREET, SUITE 220 ILMINGTON
DRAWN BY: C. NEWELL DATE: G13G12G15
- GREENVILLE,SOU1-9999TH LINA PROJECTMANAGERKATHYWEBB CONTOUR INTERVAL:10FEET 1000 GORAPHIC 1000 2000
PHONE 864CALE
-421-9999 "'.'ECT
1-1 MAP DATE 1993
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148 RIVER STREET, SUITE 220, WEATHERSPOON POWER PLANT w
GREENVILLE, SC 29601 491 POWER PLANT ROAD
864-421-9999
LUMBERTON, NORTH CAROLINA
wwwsynterracorp.com o
FIGURE 2-3
POTENTIAL GRADIENT BETWEEN
SHALLOW AND DEEP ZONES
IN THE SURFICIAL GROUNDWATER
c�

OPTION 1- Source control (Close in place) and monitored natural attenuation (MNA).
COAL ASH REMAINS IN PLACE
ESTABLISH GRASS AS COVER
$1 v /
FORMER WASTE BOUNDARY
\ _. ..
GROUNDWATER
\ - , FLOW DIRECTION
/
V00.
>
N
\ \ /
\ \ / /
INTERCEPTION TRENCH
/ ,� ' COOLING POND
.r
OPTION 3 - Source control (Closed in place) and interception trench.
SEE PLAN VIEW OF CORRESPONDING OPTIONS ON FIGURE 6-3 CONCEPTUAL
CORRECTIVE ACTION OPTIONS - SECTION VIEW.
OPTION 2 - Source control (Ash removal), phytoremediation, and monitored natural
attenuation MNA.
�, y(
9
I-'/ COAL ASH REMAINS IN PLACE
ESTABLISH GRASS AS COVER
FORMER WASTE BOUNDARY
\ FOUR EXTRACTION
WELLS
IDE
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�e
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FLOW DIRECTIONS \ / >
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OPTION 4 - Source control (Closed in place) and four groundwater extraction wells.

ASH BASIN (SOURCE) /COMPOSITE FINAL COVER SYSTEM
RAIL SPURS DRAINAGE DITCH
ASH DRAINAGE DITCH
ASH
COOLING POND AND
JACOB CREEK WETLANDS
SURFICIAL & YORKTOWN UNITS
-- _==� = ==� = = = ===-CONFINING LAYER = GROUNDWATER ABOVENC2LSTANDARD ==
E DEE UNIT
BLACK CREEK REGIONAL WATER SUPPLY AQUIFER
OPTION 1- Source control (Closed in place) and monitored natural attenuation (MNA).
NORTHWEST
SOUTHEAST
ASH BASIN (SOURCE) COMPOSITE FINAL COVER SYSTEM
RAIL SPUR DRAINAGE DITCH
EXTRACTION TRENCH
s
1,
ASH ASH DRAINAGE DITCH
COOLING POND
ANDJACOB
CREEK WETLANDS
SURFICIAL & YORKTOWN UNITS
---------
- ____ -- = AREA OF CONCENTRATIONS IN ==_
______ ___ _--CONFINING LAYER � GROUNDWATER ABOVE NC2L STANDARD
=PEE DEE UNIT
BLACK CREEK REGIONAL WATER SUPPLY AQUIFER
OPTION 3 - Source control (Closed in place) and extraction trench.
SEE PLAN VIEW OF CORRESPONDING OPTIONS ON FIGURE 6-2 CONCEPTUAL
CORRECTIVE ACTION OPTIONS - PLAN VIEW.
NORTHWEST
SOUTHEAST
YY,a
S
a0 FORMER ASH BASIN _ Y
COOLING POND
AND JACOB CREEK
WETLANDS
SURFICIAL & YORKTOWN UNITS
i
AREA OF CONCENTRATIONS IN ==
--CONFINING LAYER = GROUNDWATER ABOVE NC2L STANDARD _—_=_
_=z—=====��=_===-================== --
:PEE DEE UNIT === —ti--== — ===_ _�_ — =-
--------- -----------------------------
�� BLACK CREEK REGIONAL WATER SUPPLY AQUIFER
nommoso.
OPTION 2 - Source control (Ash removal), phytoremediation, and monitored natural attenuation MNA.
NORTHWEST
SOUTHEAST
ASH BASIN (SOURCE) COMPOSITE FINAL COVER SYSTEM
RAIL SPUR DRAINAGE DITCH
EXTRACTION WELL
ASH ASH DRAINAGE DITCH
I;
COOLING POND
ANDJACOB
CREEK WETLANDS
SURFICIAL & YORKTOWN UNITS
-----
---CONFINING
AREA OF CONCENTRATIONS IN ==_
CQNFINING LAYER = GROUNDWATER ABOVE NC2L STANDARD
=PEE DEE UNIT
M11111-00- BLACK CREEK REGIONAL WATER SUPPLY AQUIFER
OPTION 4 - Source control (Closed in place) and four groundwater extraction wells.
z ---- --.. _I F

n=6
2500
n=4
�
n=4
n=7
n=1 �
2000
1500
J
01
Z
c
1000
M
L
500
c
0
V
0
Ash Pore Beneath
Basin 0-250'
250-500' 500-750'
Distance from Waste Boundary
(ft)
—Boron (pg/L)
=Comparative Value *
= 700 pg/L
Note:
* = 2L Standard
148 RIVER STREET, SUITE 220
t)P
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
FIGURE 6-4
www.synterracorp.com
DRAWN BY: KBERNIER DATE: JANUARY 2016
GEOMETRIC MEANS OF BORON
PROJECT MANAGER: MTAYLOR
LAYOUT:
FROM DOWNGRADIENT WELLS
synTerra
FILE PATH: P:\Duke Energy 0.EG C P\GA109. WeaMerspoon Ash
Basin GW Assessment PIan120.EG_CAP\CAP Part 2\Figures\Final
n=6
n=4
�
n=4
n=7
n=1 �

7000
6000
J
Cn
�- 5000
0
+� 4000
c�
L
w 3000
U
c
0
U 2000
1000
0
Ash Pore Beneath Basin 0-250' 250-500' 500-750'
Distance from Waste Boundary (ft)
—Iron (pg/L) Comparative Value** = 5110 pg/L
Note:
** = Provisional Background
,tip 148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601 FIGURE 6-5
PHONE [phone]
www.synterracorp.com GEOMETRIC MEANS OF IRON
syn
DRAWN BY: K. BERNIER DATE: JANUARY 2016
s �/' , er PROJECT MANAGER: MTAYLOR FROM DOWNGRADIENT WELLS
I1 LAYOUT:
FILE PATH: P:\Duke Energy Progress.102"09. Weathers,own Ash
Basin GW Assessment PlenQ0.EG_CAPZAP Part 2\Figures\Final
n=6
n=4
n=4
n=7
n=1

300
250
n=6
n=4
n=7 n=1
n=4
Ash Pore Beneath Basin 0-250' 250-500' 500-750'
Distance from Waste Boundary (ft)
----Manganese(pg/L) Comparative Value* = 50 pg/L
1610
synTerra
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
DRAWN BY: K. BERNIER DATE: JANUARY 2016
PROJECT MANAGER: M TAYLOR
LAYOUT:
FILE PATH: P:\Duke Energy Progress.1028\109. Weatherspoon Ash
Basin GW Assessment Plam20.EG_CAP\CAP Part 2\Figures\Final
Note:
* = 2L Standard
FIGURE 6-6
GEOMETRIC MEANS OF MANGANESE
FROM DOWNGRADIENT WELLS

300
250
J
G1
E 200
C
O
150
L
c
n=4
U
C 100
U
50
0
Ash Pore Beneath Basin 0-250' 250-500' 500-750'
Distance from Waste Boundary (ft)
—+—Sulfate(mg/L) Comparative Value* = 250 mg/L
Note:
* = 2L Standard
148 RIVER STREET, SUITE 220 FIGURE 6-7
GREENVILLE, SOUTH CAROLINA 29601
\\//�, PHONE [phone] GEOMETRIC MEANS OF SULFATE
■ ■���� www synterracorp.com
DRAWN BY: KBERNIER DATE: JANUARY 2016 FROM DOWNGRADIENT WELLS
PROJE
\ CT MANAGER: M TAYLOR
LAYOUT:
FILE PATH'. P'.\Duke Energy Progress. 1026\109. Weatherspoon Ash
Basin GW Assessment Plan\20.EG CAP\CAP Part 2\Figures\Final
n=5
n=4
I
n=7
n=1

600
500
J
� 400
m
E
0 300
M
L
C 200
a�
U
C
O
v 100
0
Ash Pore Beneath Basin 0-250' 250-500' 500-750'
Distance from Waste Boundary (ft)
tTDS (mg/L) Comparative Value** = 520 mg/L
Note:
** = Provisional Background
148 RIVER STREET, SUITE 220 FIGURE 6-8
GREENVILLE, SOUTH CAROLINA 29601
\\\//�, PHONE [phone] GEOMETRIC MEANS OF TDS
✓y ■ ■Term
www.synterracorp.com
M
DRAWN BY: 11 ERMER DATE: JANUARY 2016 FROM DOWNGRADIENT WELLS
PROJECT MANAGER: M TAYLOR
LAYOUT:
FILE PATH'. P'.\Duke Energy Progress. 1026\109. Weathers Pon Ash
Basin GW Assessment Plan\20.EG aMCAP Part 2\Figures\Final
n=5
n=4
\n�
=4
n=7
n=1
I

100
10
1
0.1 1
Ash Pore Beneath Basin 0-250' 250-500' 500-750'
Distance from the Waste Boundary (ft)
— —Vanadium (pg/L) Comparative Value** = 60.4 pg/L
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
synTerra � OUTT MANAGER:M TAYLOR
EDATE JANUARY 2016
FILE PATH: PADuke Energy Progmss.10261109. W. he Pon Ash
Basin GW Assessment Plan120.EG_CAP\CAP Pmt 2TiguresTinal
Note:
** = Provisional Background
FIGURE 6-9
GEOMETRIC MEANS OF VANADIUM
FROM DOWNGRADIENT WELLS
n=5
n=4
n=4
n=7
n=1
Ash Pore Beneath Basin 0-250' 250-500' 500-750'
Distance from the Waste Boundary (ft)
— —Vanadium (pg/L) Comparative Value** = 60.4 pg/L
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
synTerra � OUTT MANAGER:M TAYLOR
EDATE JANUARY 2016
FILE PATH: PADuke Energy Progmss.10261109. W. he Pon Ash
Basin GW Assessment Plan120.EG_CAP\CAP Pmt 2TiguresTinal
Note:
** = Provisional Background
FIGURE 6-9
GEOMETRIC MEANS OF VANADIUM
FROM DOWNGRADIENT WELLS

160
140
120
100
..
0 80
L
C 60
a�
U
C
U 40
�0 20
0
0 200 400 600 800 1000 1200 1400 1600 1800
Aqueous Concentration Ng/L)
Soil and Aqueous Concentrations Detected > Soil or Aqueous Concentration is Not Detected Linear (Soil and Aqueous Concentrations Detected)
,(VIP 148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601 FIGURE 6-10
PHONE [phone]
�MTer ra D'W''WNBY:ynterKBERNIER SORPTION TRENDS -ARSENIC
DRAWN BY: K BERNIER DATE: JANUARY 2016
PROJECT MANAGER: M TAYLOR
LAYOUT:
FILE PATH'. P'.\Duke Energy P.gre11.1026\109. Weatherspoon Ash
Basin GW Assessment Plan\20.EG CAP\CAP Part 2\Figures\Final

30
25 ■
Cm
m 20
E
C
0 15
m
L
i
v 10
C
O
u
V 5
0
cn ■
0 -
0 1000 2000 3000 4000 5000 6000 7000
Aqueous Concentration (Ng/L)
w Soil and Aqueous Concentrations Detected Soil or Aqueous Concentration is Not Detected Linear (Soil and Aqueous Concentrations Detected)
148 RIVER STREET, SUITE 220 FIGURE 6'11
GREENVILLE, SOUTH CAROLINA 29601
\\\//��r�� ,(VIP PHONE [phone] SORPTION TRENDS - BORON
✓y ■ ■Terra
www.synterracorp.com M
DRAWN BY: 11 BERMER DATE: JANUARY 21116
PROJECT MANAGER: M TAYLOR
LAYOUT:
FILE PATH'. P'.\Duke E—gy P.gress.1026\109. W-h—p— Ash
Basin GW Assessment Plan\20.EG CAP\CAP Part 2\Figures\Fina1

18000
16000
14000
12000
v�
E
10000
■
.,
C
8000
�a
L
C
6000
a�
0
4000
U
■ ■
=
'0
■
2000
■ �■
0
0
2000 4000 6000 8000 10000 12000
14000 16000 18000
Aqueous Concentration (Ng/L)
■
Soil and Aqueous Concentrations Detected Soil or Aqueous Concentration is Not Detected Linear
(Soil and Aqueous Concentrations Detected)
148 RIVESREET, SUITE 220
FIGURE 6-12
GREENVIR ET SOUTH CAROLINA 29601
PHONE [phone]
WWW synMANAoER:
SORPTION TRENDS - IRON
DRAWN BY: 11 BERNIER DATE: JANUARY 2016
\\\//��r��
M
PROJECT MANAGER: M TAYLOR
✓y ■ ■Terra
LAYOUT:
FILE PATH'. P'.\Duke Energy P.gre11.1026\109. Weathersp— Ash
Basin GW Assessment Plan\20.EG CAP\CAP Part 2\Figures\Final

60
■
50
p1 E 40
c ■
0
0 30
L
U
V 20 ■ ■
'a
10 ■
0
0 200 400 600 800 1000 1200
Aqueous Concentration (Ng/L)
9 Soil and Aqueous Concentrations Detected Soil or Aqueous Concentration is Not Detected Linear (Soil and Aqueous Concentrations Detected)
,(VIP 148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601 FIGURE 6-13
PHONE [phone]
s m�-erra "DT ynte
SORPTION TRENDS - MANGANESE
DRAWN BY: K BERNIER DATE: JANUARY 2016
PROJECT MANAGER: M TAYLOR
LAYOUT:
FILE PATH'. P'.\Duke Energy Progress. 1026\109. Weatherspoon Ash
Basin GW Assessment Plan\20.EG CAP\CAP Part 2\Figures\Final

160
140
a�
120
cm
E
..
C 100
0
m
-w 80
C
a�
0 60
U
.0 40
L
20 -
0
0 10 20 30 40 50
Aqueous Concentration (Ng/L)
m Soil and Aqueous Concentrations Detected > Soil or Aqueous Concentration is Not Detected
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
\\//�,(VIP PHONE [phone]
■ ■���� www synterracorp.com
DRAWN BY: K BERNIER DATE: JANUARY 2016
PROJE
\ CT MANAGER: M TAYLOR
LAYOUT:
FILE PATH'. P'\Duke Energy P,N— 1026\109WW-h—poon Ash Basin
GW Assessment Plan\20. EG CAP\CAP Part 2\Flgeres\Final
Linear (Soil and Aqueous Concentrations Detected)
FIGURE 6-14
SORPTION TRENDS - VANADIUM

ac 2
c ac
Governing Equation R ac = D axz — v ax
c(x, 0) = Ci
c(0 t) —
foCo 0<t<—to
t > to
ac
ax (00' t) = 0
Ci+(Co —Ci)A(x,t) 0<t <— to
c(x't) _ {Ci + (Co — Ci) A(x, t) — (Co — Ci) A(x, t — to) t > to }
Where:
1 Rx — vt 1vx Rx + vt
A(x, t) _ — er f c 1 + —exp (—) er f c 1
2 2 (DR t) -z_ 2 D 2 (DRt)'
where:
c(x,t) = concentration at a distance x from the source area and a time t
c; = background concentration
co = source concentration
v = groundwater velocity (v=ki/n)
t = time
to = time when source is terminated
x = distance from source
D = dispersion
R = retardation factor
erfc = complementary error function
exp = exponent
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
\\//�,trip PHONE [phone]
■ ■���� www synterracorp.com
DRAWN BY: D. NICHOLS DATE: JANUARY 2016
PROJE
\ CT MANAGER: M TAYLOR
LAYOUT:
FILE PATH'. PP'.\Duke Energy PrN ....1026\109. W-h—p— Ash
Basin GW Assessment Plan\20.EG CAP\CAP Part 2\Figures\Fina1
FIGURE 6-15
ONE DIMENSIONAL CONVECTIVE -
DISPERSIVE SOLUTE TRANSPORT WITH
SOURCE TERM AND
SORPTION PROPERTIES

1,400
1,200
1,000
J
O1
Z
0 800
f0
L
N
C
U
0 600
U
O
L
O
M
Nowdolij
200
J1
0 200 400 600 800 1,000 1,200 1,400
Time Since Plant Start Up (yrs)
--m—Comparative Value 700 ug/L—rt—Kd=1 mL/g Kd=2 mL/g —*--Kd=4 mL/g
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
\\//�,(VIP PHONE [phone]
■ ■���� www synterracorp.com
DRAWN BY: K BERNIER DATE: JANUARY 2016
PROJE
\ CT MANAGER: M TAYLOR
LAYOUT:
FILE PATH'. PP'.\Duke Energy PIN... .1026\109. W-h—p— Ash
Basin GW Assessment Plan\20.EG CAP\CAP Part 2\Figures\Final
1,600
FIGURE 6-16
CONCENTRATION OF BORON
AT THE EDGE OF COOLING POND,
COMPARING Kd

1,000
J
100
7.
C
O
a+
f0
C
Gl
v
C
O
U
O
m
V
�+ 10
O
J
1
0 2000 4000 6000 8000 10000 12000 14000 16000 18000
Time Since Plant Start Up (yrs)
Boron Comparative Value 700 ug/L —x—Arsenic Comparative Value 10 ug/L --*--Arsenic, Kd = 45 mL/g --m--Boron, Kd = 4 mL/g
,(VIP 148 RIVER STREET, SUITE 220 FIGURE 6-17
GRESOUTH CAROLINA 29601 CONCENTRATION OF BORON
PHONENE 864 864-44 21-9999
s mTerra PROJE rracorp com AND ARSENIC AT T H E
DRAWN BY: K BERNIER DATE: JANUARY 2016
PROJECT MANAGER: MTAYLOR
LAYOUT: EDGE OF COOLING POND
FILE PAT HE\Duke Energy Progress. 1026\109. W-h—pon Ash Basin
GW Assessment Plan\20.EG CARCAP Part 2\Fig,—Tin l

1,200
1,000
:11
.11
i 1 1
200
0 1 1 1 1 1 1 1 1
0 200 400 600 800 1000 1200 1400 1600
Time Since Plant Start Up (yrs)
—x—Comparative Value = 700 ug/L tVs=12 ft/year tVs=24 ft/yr
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
\\//�,(VIP PHONE [phone]
■ ■���� www synterracorp.com
DRAWN BY: K BERNIER DATE: JANUARY 2016
PROJE
\ CT MANAGER: M TAYLOR
LAYOUT:
FILE PATH'. P'.\Duke E—gy P.g— 1026\109. W --t p -n Ash
Basin GW Assessment Plan\20.EG CAP\CAP Part 2\Figures\Final
Vs=36 ft/yr
FIGURE 6-18
CONCENTRATION OF
BORON AT THE EDGE OF
COOLING POND, COMPARING Vs

120
100
Q 20
0
0 50 100 150 200 250 300 350 400 450
Distance from Ash Basin to Cooling Pond (ft)
—x—Comparative Value 10 ug/L —w—Edge of Cooling Pond 1200 years 13000 years 7000 years
,trip
synTerra
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
DRAWN BY: K BERNIER DATE: JANUARY 2016
PROJECT MANAGER: M TAYLOR
LAYOUT:
FILE PATH'. P'.\Duke Energy Progress. 1026\109. W-hersp— Ash
Basin GW Assessment Plan\20.EG CAP\CAP Part 2\Figures\Final
FIGURE 6-19
CONCENTRATION OF ARSENIC FROM
ASH BASIN TO COOLING POND AT
200, 3000, 7000 YEARS

2,500
r m
J
z
1,500
to 500
0
0 50 100 150 200 250 300 350 400 450
Distance from Ash Basin to Cooling Pond (ft)
—►t—Comparative Value 700 ug/L I IEdge of Cooling Pond —o-68 years (2016 conditions) 1500 years 1000 years
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
\\//�,trip PHONE [phone]
■ ■���� www synterracorp.com
DRAWN BY: K BERNIER DATE: JANUARY 2016
PROJE
\ CT MANAGER: M TAYLOR
LAYOUT:
FILE PATH'. P'.\Duke Energy P.gre11.1026\109. Weathersp— Ash
Basin GW Assessment Plan\20.EG CAP\CAP Part 2\Figures\Final
FIGURE 6-20
CONCENTRATION OF BORON AT COOLING
POND OVER TIME, Kd = 4 mL/g

3,000
2,500
2,000
1,500
1,000
500
ril
0 50 100 150 200 250 300 350
Distance from Ash Basin to Cooling Pond (ft)
—x—Comparative Value 700 ug/L Edge of Cooling Pond t68 years (2016 conditions) 1120 years
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
\\//�,(VIP PHONE [phone]
■ ■���� www synterracorp.com
DRAWN BY: K BERNIER DATE: JANUARY 2016
PROJE
\ CT MANAGER: M TAYLOR
LAYOUT:
FILE PATH'. P'.\Duke Energy P.gress.1026\109. Weathersp— Ash
Basin GW Assessment Plan\20.EG CAP\CAP Part 2\Figures\Final
400 450
300 years
FIGURE 6-21
CONCENTRATION OF BORON AT COOLING
POND OVER TIME, Kd = 1 mL/g

Boron : 61112015 12:00:00 AM
— 5000.0
— 2000.0
— 700.0
gm
a.) Boron
2015 1
Arsenic: 61112015 12:00:00 AM
— 1000.0
10.0
c.) Arsenic
2015 1

70
.%
50
M
q) 40
4
20
10
Ell
-400 -300 -200 -100 0
Note: *Base graph from Appendix B, Figure 2.4
100 200 300
EH (mV)
,trip
synTerra
400 500 600 700 800
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
DRAWN BY: K BERNIER DATE: JANUARY 2016
PROJECT MANAGER: M TAYLOR
LAYOUT:
FILE PATHP'0— Energy Pr gr— 1026\109. W-h—p— Ash Basin
GW Assessment Plan\20. EG CARCAP Part 2\Fig—Ti-1
♦ Histogram*
Eh + 1 Std. Dev.*
EH mean value*
Eh - 1 Std. Dev.*
• Mean Eh Surficial Unit
o Mean Eh Lower Yorktown
FIGURE 6-23
FREQUENCY OF Eh OCCURRENCE
IN GROUNDWATER WITH
WEATHERSPOON VALUES

50
45
.m
35
a�
30
LmL
25
U
O
0 20
4t
15
10
5
0
2
3 4 5 6
Note: *Base graph from Appendix B, Figure 2.5
7 8
pH
,(VIP
synTerra
9 10 11 12
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: K BERNIER DATE: JANUARY 2016
PROJECT MANAGER: M TAYLOR
LAYOUT:
FILE PATH'. P'.\Duke Energy P.gress.1026\109. W-hersp— Ash
Basin GW Assessment Plan\20.EG CAP\CAP Part 2\Figures\Final
♦ Histogram*
—pH +1SD*
pH mean value*
pH - 1 SD*
® Mean pH Surficial Unit
o Mean pH Lower Yorktown
FIGURE 6-24
FREQUENCY OF pH OCCURRENCE
IN GROUNDWATER WITH
WEATHERSPOON VALUES
♦
N♦
N
Ak
3 4 5 6
Note: *Base graph from Appendix B, Figure 2.5
7 8
pH
,(VIP
synTerra
9 10 11 12
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: K BERNIER DATE: JANUARY 2016
PROJECT MANAGER: M TAYLOR
LAYOUT:
FILE PATH'. P'.\Duke Energy P.gress.1026\109. W-hersp— Ash
Basin GW Assessment Plan\20.EG CAP\CAP Part 2\Figures\Final
♦ Histogram*
—pH +1SD*
pH mean value*
pH - 1 SD*
® Mean pH Surficial Unit
o Mean pH Lower Yorktown
FIGURE 6-24
FREQUENCY OF pH OCCURRENCE
IN GROUNDWATER WITH
WEATHERSPOON VALUES

C"I
�ia�t �Y srfrlL rtlAllC�.
SOURCE:
MAY 19, 2014 AERIAL PHOTOGRAPH OBTAINED FROM NRCS GEOSPTIAL DATA
GATEWAY AT http.,//datagateway.nres.usda.gov/
COAL ASH REMAINS IN PLACE
/ ESTABLISH GRASS AS COVER
WASTE BOUNDARY
GROUNDWATER
FLOW DIRECTION
v1
IL �•''
Ilk-
H.r 4
►`� ` / / <
161,
synTerra
GRAPHIC SCALE
300 0 300 600
IN FEET
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: JOHN CHASTAIN DATE: 01/15/2016
PROJECT MANAGER: MARK TAYLOR
LAYOUT: FIG 7-1 (PIAN VIEW)
.L
A
' Typj- u.
FIGURE 7-1
BASELINE & MNA CORRECTIVE ACTION DESIGN
PLAN VIEW
DUKE ENERGY PROGRESS
WEATHERSPOON POWER PLANT
491 POWER PLANT ROAD
LUMBERTON, NORTH CAROLINA

NORTHWEST SOUTHEAST
ASH BASIN (SOURCE) /COMPOSITE FINAL COVER SYSTEM
RAIL SPURS iDRAINAGE DITCH ,
ASH
DRAINAGE DITCH
..' ASH
COOLING POND AND
-- JACOB CREEK WETLANDS
SURFICIAL & YORKTOWN UNITS
_ ``_--- —
______-__ AREA OF CONCENTRATIONS IN
=-CONFINING LAYER = GROUNDWATER ABOVE NC2L STANDARD -_______-
----------:PEE DEE UNIT ---- = = = = = ===------------_
--------------------------------- --_-------- -
BLACK CREEK REGIONAL WATER SUPPLY AQUIFER
L1,
synTerra
NOT TO SCALE
148 RIVER STREET, SUITE 220
GREENVILLE'SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: JOHN CHASTAIN DATE: 01/15/2016
PROJECT MANAGER: MARK TAYLOR
LAYOUT: FIG 7-2 (SECTION VIEW)
FIGURE 7-2
BASELINE & MNA CORRECTIVE ACTION DESIGN
SECTION VIEW
DUKE ENERGY PROGRESS
WEATHERSPOON POWER PLANT
491 POWER PLANT ROAD
LUMBERTON, NORTH CAROLINA

Lw
OAA,100
h� 4.s< '
P i
o
Or
7 4 # .. T
� r
vt
o
3W-0 S PREDICTED EXTENT OF BORON IN EXCESS
BW -0 I OF 21 IN GROUNDWATER 2045
�P n LEGEND
GROUNDWATER MONITORING LOCATION
NPDES COMPLIANCE MONITORING WELL
DUKE ENERGY PROGRESS WEATHERSPOON PLANT
500 li COMPLIANCE BOUNDARY
W -02S WASTE BOUNDARY
W-021 .k SOURCES:
`- 2014 AERIAL PHOTOGRAPH WAS OBTAINED FROM WSP FLOWN ON APRIL 1 , 2014.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE COORDINATE
SYSTEM FIPS 200 (NAD 81 �.
2015 GROUNDWATER ASSESSMENT WELL AND BORING LOCATIONS WERE BASED ON SURVEY DATA
r ° 4 DATED MARCH 2 , 2015 PROVIDED BY McKIM & CREED OF WILMINGTON, NORTH CAROLINA.
Or
�y F
-01 MW -01i rr
BW -0 D utp, Ti-. - y
40
.4 :
h Y sem'
{
s f; 4 irk
_`#��"F •- "� iiiy v s� r!, rA,� r"�* $r�,. �.S k,. :.. �,'.
a;x s
i.
MW -08R
MW -081R
ASH BASIN
MW-44SAR
MW -441R
•'� 'rim kk'��,,, �'�� �'� �`.i.�+'4� ,���� t�, 'T' F ,ity*�iP
-411 � ..'. � b
�`
,� �
,��a-� •-`�`�e�� ?2"'�w�'�
r. 7r •` OCG'}t '2 , °�' ~��.
MW-05�/
MW -04
} MW -06
-
f
MW -0
GRAPHIC SCALE
250 0 250 500
IN FEET
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
Terra DRAWN BY ANAGEN ROBINSON DATE 01/1512016
PROJECT MANAGER: MARK TAYLOR
LAYOUT: FIG - (BORON EXTENT)
01/28/2016 9:56 AM P:\Duke Energy Progress. 1 026\1 09. 2
W /1 1 E►
Ullytyallm
FIGURE 7-3
EFFECTIVENESS MONITORING SYSTEM
DUKE ENERGY PROGRESS
WEATHERSPOON POWER PLANT
491 POWER PLANT ROAD
LUMBERTON, NORTH CAROLINA

2" DIAMETER PVC
MONITORING WELLS (2)
COVER WITH LOCK
SEAL ANNULAR SPACE 8" DIAMETER PVC
WITH BENTONITE GROUT PROTECTIVE CASING
41,
16" DIAMETER
1 I 1 I DR1 — HDPE PIPE
IIII
60-MIL HDPE MEMBRANE LINER (TYPICAL) I I I I I
EXTRUSION WELD HDPE MEMBRANE LINER
+I I I I I I I TO HDPE COLLAR (TYPICAL ALL AROUND)
N I I I I SEE DETAIL BELOW
GROUND SURFACE I I I I I
1IF_:�i
12"
OVER
60-MIL HDPE MEMBRANE COLLAR
- FACTORY WELDED TO PIPE
II I I II 24"
M II II COLLAR
IIII
II I I I�
IIII
II I I I�
IIII
II I I I�
IIII
II I I I�
IIII
IIII
II
IIII
IIII
I I I I
I I 1
MONITORING WELL DETAIL
NOT TO SCALE
12" OVERLAP
EXTRUSION WELD
'A
FLEXIBLE TEXTURED
GEOMEMBRANE
GEOMEMBRANE FILLET EXTRUSION WELD DETAIL
NOT TO SCALE
NOT TO SCALE FIGURE 7-4
148 RIVER STREET, SUITE 220 TYPICAL DETAIL
GREENPHONE 64-421-9999LLE, SOUTH CAROLINA 29601 MONITORING WELL INSTALLATION
PHONE [phone]
RAW BY:ynterracor
THROUGH FINAL COVER
Terra DRAWN BY J COLEMAN DATE 01/14/2016
PROJECT MANAGER: WELLM. INET
LOR
LAYOUT: FIGURE 7-4 WELL INSTALLATION
01/26/2016 3:48 PM P:\Duke Energy Progress.1026\109. Weatherspoon Ash Basin GW Assessment Plan\20.EG_CAP\CAP Part 2\Figures\FIGURE 7-4 WELL INSTALLATION.dwg

�.LEGEND
fe �-S MW -01 GROUNDWATER MONITORING LOCATION
NPDES COMPLIANCE MONITORING WELL
DUKE ENERGY PROGRESS WEATHERSPOON PLANT
s ~�
500 t COMPLIANCE BOUNDARY
WASTE BOUNDARY
C�wyr �s 4
r
' �` '•s*•s ..., � -� �'' '�" F✓ � _ " �""� `''" SOURCES:
ON APRIL 1 2014.
uo
'*+A PROJECTION OF NORTH CAROLINA STATE PLANE COORDINATE
2014 AERIAL PHOTOGRAPH
$3 sf, . : Y . ♦SYS EIM FPS 1200 (NAD 8WI 2015 GROUNDWATER ASSESMENT WELL AND BORING LOCATIIOS WERE BASED ON SURVEY DATA
v a .� , � - • - �'" DATED MARCH 2 2015 PROVIDED BY McKIM & CREED OF WILMINGTON, NORTH CAROLINA.
jury, .airw fr j$
'�kkl4
R R.
sc` !
�.. r' ♦ �,
All
r# /
7 rk
r ��.,,, '� b..,� '' � � .r ' � �G� / �- . � t �.�.�' �. - - �, ,'�• ,.: vK°" of .f�iv
•
r .
,3
021
O
M W E �
rK zI' ✓� MW
-081R AW -0 I F ,:,.-.
All
&° Rk,.y ASH BASIN,.. , 1 w
MW -441R
R
CW 02 '
/ // t Y.,, • ' : ,fit `
� ., f {`, - ... --•. ern
BW -0 S
a BW -0 I'a
BW -0 D T M . '.; MW -05 MW 551
~a
MW -04 � MW -55D �
Ar
f
��
�• � �
h' MW -511
1
CW 01 y f
„,,�,+a�*i�7w COOLING POND
i"1k-'.Tiay'9'��.
4
tr ,
NOVI
°am X41
4iA '
GRAPHIC SCALE
zeo o zso 500 FIGURE 9-1
IN FEET
AA EFFE TIVENE M NITORIN WELL L CATI N MAP
4.1
t
48 STREET, SUITE 220
C SS O G O O
DUKE ENERGY PROGRESS
GR EIVER
NVLLE, SOUTH CAROLINA 29601
PHONE [phone]
WEATHERSPOON POWER PLANT
'
•.r�+
A
t.wti
� �.5 FW
r1 Terra
..
wwwsynterracorp.com
DRAWN BY:ANTWANROBINSON DATE:01/id2016
PROJECT MANAGER: MARK
491 POWER PLANT ROAD
LUMBERTON NORTH CAROLINA
irs' w
.,•� "'� ^�
f.
;} -
LAYOUT: FIG 9-1 (EFFECTIVENESS GW SAMPLING)
x. , .
.�•= '”
- � s,.
01/28/2016 10:05 AM P:\Duke Energy Pro mss.1026\109. Weathers
oon Ash Basin GW Assessment Plan\20.EG CAP\CAP Part 2\Fi ures\FIGURE 9-1 PROP GW MONTH