Belews Creek Pilot Extraction Well Permit App 07.10.20 - final

DUKE
ENERGY®
July 10, 2020
State of North Carolina Department of Environmental Quality
Division of Water Resources, Aquifer Protection Section
Attn: Mr. Jim Gonsiewski
450 Hanes Mill Road, Suite 300
Winston-Salem, North Carolina 27105
Subject: Application for Permit to Construct Recovery (Extraction) Wells
Dear Mr. Gonsiewski:
Environmental, Health & Safety
526 S. Church Street
Mail Code: EC13K
Charlotte, NC 28202
Duke Energy Carolinas, LLC (Duke Energy), is submitting the enclosed application package to
obtain a permit to install 23 recovery (extraction) wells as part of the pilot test phase of a
proposed groundwater remediation system at the Belews Creek Steam Station (Site), located in
Belews Creek, North Carolina.
As detailed in the Corrective Action Plan (CAP) Update Report (SynTerra 2019) and the
Demonstration of 02L Compliance for the Belews Creek Ash Basin technical memorandum
(Tech Memo) (SynTerra, 2020), Duke Energy is implementing a multi -component CAP,
including source control through excavation of the Ash Basin and capping of existing on -site
landfills, groundwater corrective action, and an effectiveness monitoring plan to track progress
during and after groundwater corrective action. The groundwater CAP includes provisions for a
robust groundwater remediation program that consists of using groundwater extraction wells
combined with clean water infiltration wells and associated treatment to address constituents of
interest (COI) concentrations in groundwater greater than applicable standards at or beyond the
Geographic Limitation of the Ash Basin.
As discussed in the CAP Update (SynTerra 2019), groundwater in the area of the Site occurs in
three interconnected hydrostratigraphic zones:
• The shallow flow zone in soils and saprolite (saprolite zone),
• The transition flow zone (referred to as "deep" in some previous reports); and
• The bedrock flow zone.
Groundwater flow and transport modeling suggest site -related COI extend from the saprolite
into the bedrock flow zone. Based on the distribution of COI and the vertical hydraulic
connection through the saprolite, transition, and bedrock zones, Duke Energy is proposing to
install 23 extraction wells with well screen and/or sand pack across all three zones (Table
1). Given the interconnectivity of the hydrostratigraphic zones, Duke Energy is requesting a
variance from 15A NCAC 02C .0108 North Carolina Well Construction Standards in accordance
with 15A NCAC 02C .0105 based on the following:
• Construction of extraction wells with screens across the three water -bearing units will
allow for more effective remediation of groundwater.
• Site -related COI are present in groundwater in all three zones.

July 10, 2020
Page 2
• Corrective action to address these COI in groundwater is also proposed in all three
zones.
• Extraction of groundwater provides the necessary hydraulic connection between the
COI- affected groundwater zones and the proposed clean water infiltration, which targets
the saprolite and transition zones.
• The proposed well construction is not expected to generate a potential risk to human
health or groundwater.
• Due to expected low well yield (less than two gallons per minute), constructing recovery
wells to extract water from a specific water -bearing unit would not provide sufficient well
yield to effectively remediate groundwater at the site.
• Water supply wells are not located within 500 feet of the proposed extraction wells.
The Application for Permit to Construct a Recovery Well System is attached, as well as
additional supporting information provided for your review and approval. We appreciate the
NCDEQ's timely review of this submittal package as we proactively implement the groundwater
remediation strategy for this Site. Please contact Mr. Andrew Shull (919.546.2104) or Mr. Scott
Davies (980.373.6563) with any questions or concerns regarding this application.
Respectfully Submitted,
Andrew W. Shull, P.E.
Environmental Services
Cc: Steve Lanter, NCDEQ Central Office
Eric Smith, NCDEQ Central Office
Scott Davies, Duke Energy
Melonie Martin, Duke Energy
John Toepfer, Duke Energy
Bob Wyrick, AECOM
Matt Allen, AECOM
Enclosures:
1 Permit to Construct a Recovery Well System
2 Figure 1 - Source Area Overview Map
3 Figure 2 - Extraction Well Construction Layout
4 Figure 3 - Groundwater Extraction Well Schematic
5 Table 1 - Extraction Well Construction Summary

NORTH CAROLINA DEPARTMENT OF ENVIRONMENTAL QUALITY - DIVISION OF WATER RESOURCES
APPLICATION FOR PERMIT TO CONSTRUCT A MONITORING OR RECOVERY WELL SYSTEM
PLEASE TYPE OR PRINT CLEARLY
In accordance with the provisions of Article 7, Chapter 87, General Statutes of North Carolina and regulations pursuant thereto,
application is hereby made for a permit to construct monitoring or recovery wells.
1. Date: July 9, 2
2. County: Stokes
FOR OFFICE USE ONLY
PERMIT NO. ISSUED DATE
3. What type of well are you applying for? (monitoring or recovery): Recovery
4. Applicant: Duke Energy Carolinas, LLC Telephone:
Applicant's Mailing Address: 410 South Wilmington Street, Raleigh, NC 27601
Applicant's Email Address (if available): N/A
5. Contact Person (if different than Applicant): Andrew Shull Telephone: [phone]
Contact Person's Mailing Address: 410 South Wilmington Street, NCRH 15, Raleigh, NC 27601
Contact Person's Email Address (if available): andrew.shull(a-)duke-energy.com
6. Property Owner (if different than Applicant): Same as Applicant Telephone: Same as Applicant
Property Owner's Mailing Address: Same as Applicant
Property Owner's Email Address (if available): Same as Contact Person
7. Property Physical Address (Including PIN Number) Belews Creek Steam Station, 3195 Pine Hall Road
City Belews Creek County Stokes Zip Code 27009
8. Reason for Well(s): Remediation
(ex: non -discharge permit requirements, suspected contamination, assessment, groundwater contamination, remediation, etc.)
9. Type of facility or site for which the well(s) is(are) needed: Belews Creek Steam Station Coal Ash Basin (ex: non -discharge
facility, waste disposal site, landfill, UST, etc.)
10. Are there any current water quality permits or incidents associated with this facility or site? If so, list permit and/or incident no(s).
n/a
11. Type of contaminants being monitored or recovered: inorganics and/or heavy metals
(ex: organics, nutrients, heavy metals, etc.)
12. Are there any existing wells associated with the proposed well(s)? If yes, how many? Yes, 21 monitoring and 10 extraction
Existing Monitoring or Recovery Well Construction Permit No(s).: N/A
13. Distance from proposed well(s) to nearest known waste or pollution source (in feet): Approximately 400 feet
14. Are there any water supply wells located less than 500 feet from the proposed well(s)? No
If yes, give distance(s): N/A
15. Well Contractor: To Be Determined Certification No.: To Be Determined
Well Contractor Address: To Be Determined
PROPOSED WELL CONSTRUCTION INFORMATION
1. As required by 15A NCAC 02C .0105(f)(7), attach a well construction diagram of each well showing the following:
a. Borehole and well diameter e. Type of casing material and thickness
b. Estimated well depth f. Grout horizons
C. Screen intervals g. Well head completion details
d. Sand/gravel pack intervals
Continued on Reverse

PROPOSED WELL CONSTRUCTION INFORMATION (Continued)
2. Number of wells to be constructed in unconsolidated
material: 0
3. Number of wells to be constructed in bedrock: 23
5. How will the well(s) be secured? Wells will be secured
with locking well cap and manhole/stainless steel well casing.
6. Estimated beginning construction date: TBD
4. Total Number of wells to be constructed: 23 7. Estimated construction completion date: TBD_
(add answers from 2 and 3)
ADDITIONAL INFORMATION
1. As required by 15A NCAC 02C .0105(f)(5), attach a scaled map of the site showing the locations of the following:
a. All property boundaries, at least one of which is referenced to a minimum of two landmarks such as identified roads,
intersections, streams, or lakes within 500 feet of the proposed well or well system.
b. All existing wells, identified by type of use, within 500 feet of the proposed well or well system.
C. The proposed well or well system.
d. Any test borings within 500 feet of proposed well or well system.
e. All sources of known or potential groundwater contamination (such as septic tank systems, pesticide, chemical or fuel
storage areas, animal feedlots as defined in G.S. 143-215.10B(5), landfills, or other waste disposal areas) within 500 feet
of the proposed well or well system.
SIGNATURES
The Applicant hereby agrees that the proposed well(s) will be constructed in accordance with approved specifications and conditions of
this Well Construction Permit as regulated under the Well Construction Standards (Title 15A of the North Carolina Administrative Code,
Subchapter 2C) and accepts full responsibility for compliance with these rules
Andrew Shull Digitally signed by Andrew Shull
Date: 2020.07.10 15:53:03-04'00'
Signature of Applicant or *Agent
Andrew Shull
Printed name of Applicant or *Agent
Sr. Environmental Specialist
Title of Applicant or *Agent
* If signing as Agent, attach authorization agreement stating
that you have the authority to act as the Agent.
If the property is owned by someone other than the applicant, the property owner hereby consents to allow the applicant to construct
wells as outlined in this Well Construction Permit application and that it shall be the responsibility of the applicant to ensure that the
well(s) conform to the Well Construction Standards (Title 15A of the North Carolina Administrative Code, Subchapter 2C).
N/A
N/A
Signature of Property Owner (if different than Applicant) Printed name of Property Owner (if different than Applicant)
DIRECTIONS
Please send the completed application to the appropriate Division of Water Resources' Regional Office
Asheville Regional Office
Phone: [phone]
Winston-Salem Regional Office
2090 U.S. Highway 70
Fax: [phone]
450 W. Hanes Mill Road
Swannanoa, NC 28778
Suite 300
Phone: [phone]
Washington Regional Office
Winston-Salem, NC 27105
Fax: [phone]
943 Washington Square Mall
Phone: [phone]
Washington, NC 27889
Fax: [phone]
Fayetteville Regional Office
Phone: [phone]
225 Green Street, Suite 714
Fax: [phone]
Fayetteville, NC 28301-5094
Phone: [phone]
Fax: [phone]
Mooresville Regional Office
610 East Center Avenue
Mooresville, NC 28115
Phone: [phone]
Fax: [phone]
Raleigh Regional Office
3800 Barrett Drive
Raleigh, NC 27609
Wilmington Regional Office
127 Cardinal Drive Extension
Wilmington, NC 28405
Phone: [phone]
Fax: [phone]
° GW-22MR Rev. 3-1-2016
GW-22MR (6/11)

Z2• � •� �
-DANRIVER�.
-YF.•:.� �f• �f r '� - !l' -�;, I.I. �, o- •4l'.�..� ,- ,`
•
/- �f�+'j �. ;. `i `'.�. ♦.ram° ' � �.L_ ` •��{1 � �� �t� 'li --. l
ASH BASIN GEOGRAPHIC LIMITATION o° LINED RETENTION
BASIN
ASH BASIN —
tj
�^ PARCEL LINE
COAL PILE
80 / _
BELEWS CREEK STEAM STATION
C 'riff' •..:
PINE HALL
ROAD LANDFILL _
(CLOSED) { STRUCTURAL FILL
-- U NE�� r C i.'. I �. (CLOSED)
At
fn�DYIN_{. �_... ... r:.. ��^... .► 1 FGD LANDFILL
Coo
CRAIG ROAD '���: _LANDFILL
'4�Tti.7+4.MHpR� --+
77
NOTES:
1. 2016 USGS TOPOGRAPHIC MAP, BELEWS LAKE QUADRANGLE,
OBTAINED FROM THE USGS STORE AT https://store.usgs.gov/map-locator. —
l
�' �'� �:•' - o
2.THE LOCATIONS OFALL BOUNDARIES, REMEDIATIONAND MONITORING WELLS,AND
�� 7 (
WETLANDS WERE PROVIDED BY SYNTERRA CORPORATION AND ORIGINALLY DOCUMENTED
IN THE CORRECTIVE ACTION PLANUPDATE (DECEMBER 2019) AND THE DEMONSTRATION
OF 02L COMPLIANCE FOR THE BELEWS CREEK ASH BASIN BY DECEMBER 31, 2019 TECHNICAL
MEMORANDUM (MARCH 2020)AND SHOULD BE CONSIDERED APPROXIMATE. ��
` ! ! ]
DUKE
STOKES
COUNTY
3
SITE LOCATION MAP
w ENERGY
BELEWS CREEK STEAM STATION
W/NSiON-SRLEM
ASHEVILLE
PILOT TEST WORK PLAN
BELEWS CREEK, NORTH CAROLINA
��,r� +.
cnartLorrE
DRAWN BY: T. EISCHEN DATE: 05/05/2020
REVISED BY: DATE:0
GRAPHIC SCALE
1,000 2,000
CHECKED BY:
DATE:
[000
(IN FEET)
APPROVED BY:
DATE:
PROJECT MANAGER:

�o GWA-21 D 1GW
% ,..�.
GWA-21 S GWA-11 S
I'
i
EX-37 EX-47
EX-46
:i
EX-35
EX-40
j
EX-43 j'
EX-41
"EX-44
%
EX-36
EX-32 EX-39 j
EX-28 EX-34 ^ %
EX-26
EX-30
EX-45
EX-25 EX-38
EX-22
EX-23 .�
EX-21 •I�
r,�
GWA-19D
GWA-19SA
GWA-19S
GWA-19BR
I•
I
GWA-27S
GWA-27B R
GWA-27D
EXOB-2
%' ❑ EX-06
/ i' ❑ EX-07
�❑ EX-08
%' ❑ EX-09
/ ❑ EIg
CCR-2S I CCR-2D
/ CCR-4S
/� CCR-4D
EX-01
❑ E04
NOTES:
THE WATERS OF THE US HAVE NOT BEEN APPROVED BY THE US ARMY CORPS OF
ENGINEERS AT THE TIME OF THE MAP CREATION. THIS MAP IS NOT TO BE USED
FOR JURISDICTIONAL DETERMINATION PURPOSES. THE WETLANDS AND STREAMS
BOUNDARIES WERE OBTAINED FROM AIMED FOSTER WHEELER ENVIRONMENTAL
& INFRASTRUCTURE. INC. NATURAL RESOURCE TECHNICAL REPORT FOR BELEWS
CREEK STEAM STATION DATED J ULY 2. 20-
ALL BOUNDARIES ARE APPROXIMATE.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY CAROLINAS.
AERIAL PHOTOGRAPHY OBTAINED FROM NO One Map.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE COORDINATE
SYSTEM PIPS 3200(NAD33).
rf� DUKE
ENERGY..
�L=com
GRAPHIC SCALE
0 50
100
Feet
BY: T. EISCHEN
DATE: 05/05/2020
) BY:
DATE:
:ED BY:
DATE:
QED BY:
DATE:
T MANAGER
DATE:
LEGEND
760
• MONITORING WELL
O PILOT TEST EXTRACTION WELL
❑ EXISTING EXTRACTION WELL
ASH BASIN WASTE BOUNDARY
_.._.._ ASH BASIN GEOGRAPHIC
LIMITATION
BASE CONTOUR 2 FEET
BASE CONTOUR 20 FEET
DUKE ENERGY CAROLINAS
PROPERTY BOUNDARY
UNPAVED ROADS
PILOT TEST WELL LOCATIONS
BELEWS CREEK STEAM STATION
BELEWS CREEK, NORTH CAROLINA

Table 1
Extraction Well Construction Details
Belews Creek Steam Station
Belews Creek, NC
Well ID
EX-18
Wei
.-.
(ft BGS
189
Sump
(ft BGS)
189
Sump
(ft)
10
Screen
(ft BGS)
179
..
159
Screen
(ft)
20
Extraction Wells
Filter Pack
..
(ft BGS)
39
Filter Pack
Length
(ft)
150
Bentonite
Seal Top
(ft BGS)
36
Bentonite
Seal
Length
(ft)
3
Riser
Length
(ft)
159
F TIrg eted Zones
Sa rolite/Transition Zone/Bedrock
EX-21
176
176
10
166
146
20
26
150
23
3
146
Sa rolite/Transition Zone/Bedrock
EX-22
171
171
10
161
141
20
21
150
18
3
141
Sa rolite/Transition Zone/Bedrock
EX-23
173
173
10
163
143
20
23
150
20
3
143
Sa rolite/Transition Zone/Bedrock
EX-25
176
176
10
166
146
20
26
150
23
3
146
Sa rolite/Transition Zone/Bedrock
EX-26
176
176
10
166
146
20
26
150
23
3
146
Sa rolite/Transition Zone/Bedrock
EX-28
181
181
10
171
151
20
31
150
28
3
151
Sa rolite/Transition Zone/Bedrock
EX-29
1 170
170
10
1 160
140
20
25
1 145
22
3
140
1 Sa rolite/Transition Zone/Bedrock
EX-30
177
177
10
167
147
20
32
145
29
3
147
1 Sa rolite/Transition Zone/Bedrock
EX-32
180
180
10
170
150
20
30
150
27
3
150
1 Sa rolite/Transition Zone/Bedrock
EX-34
186
186
10
176
156
20
36
150
33
3
156
1 Sa rolite/Transition Zone/Bedrock
EX-35
179
179
10
169
149
20
29
150
26
3
149
1 Sa rolite/Transition Zone/Bedrock
EX-36
182
182
10
172
152
20
32
150
29
3
152
1 Sa rolite/Transition Zone/Bedrock
EX-37
179
179
10
169
149
20
24
155
21
3
149
Sa rolite/Transition Zone/Bedrock
EX-38
185
185
10
1 175
155
20
1 40
145
37
1 3
155
Sa rolite/Transition Zone/Bedrock
EX-39
188
188
10
178
158
20
38
150
35
3
158
Sa rolite/Transition Zone/Bedrock
EX-40
179
179
10
169
149
20
29
150
26
3
149
Sa rolite/Transition Zone/Bedrock
EX-41
183
183
10
173
153
20
33
150
30
3
153
Sa rolite/Transition Zone/Bedrock
EX-43
184
184
10
174
154
20
29
155
26
3
154
Sa rolite/Transition Zone/Bedrock
EX-44
186
186
10
176
156
20
36
150
33
3
156
Sa rolite/Transition Zone/Bedrock
EX-45
187
187
10
177
157
20
42
1 145
39
3
157
Sa rolite/Transition Zone/Bedrock
EX-46
181
181
10
171
151
20
26
155
23
3
151
Sa rolite/Transition Zone/Bedrock
EX-47
1 176
176
1 10
1 166
146
20
21
155
18
3
146
1 Sa rolite/Transition Zone/Bedrock
Notes:
1. All depths are approximated and may change depending on site conditions
2. Wells will be constructed with 6-inch well casinq and screen materials
ft - feel
ft BGS - feet below qround surface

Client: Duke Energy WELL ID: See Table
/%=CQM Project Number 60629990
Site Location: Belews Creek, NC Date Installed: Proposed
Well Location: Proposed Coords: Proposed Inspector:
Method: Roto-SonidAir Rotary Contractor: TBD
Measuring Point
for Surveying &
Water Levels
Cement, Bentonite,
Bentonite Slurry
Grout, or Native
Materials
95 % Ceme
5 % Bento
o % NatIVE
Materia
PROPOSED RECOVERY WELL CONSTRUCTION DETAIL
of Riser Pipe
ind Surface (GS)
of Cement
w Pipe:
Length See Table
Inside Diameter (ID) 6-in
Type of Material PVC
om of Steel Guard Pipe
of Bentonite
tonite Seal Thickness
of Sand
of Screen
Stabilized Water Level
3ft
)en:
Length 15 ft
Inside Diameter (ID) 6-in
Slot Size 0.01 in
Type of Material Stainless -Steel / PVC
/Size of Sand #2
d Pack Thickness 18 ft
om of Screen
om of Tail Pipe: PVC Threaded Plug
om of Borehole
Borehole Diameter: 10-in Approved: