Cliffside Rec Well Permit App 7-1-20

DUKE
ENERGY®
CAROLINAS
July 1, 2020
Mr. Landon Davidson
Regional Supervisor
North Carolina Department of Environmental Quality
Division of Water Resources, Water Quality Regional Operations
2090 U.S. Highway 70
Swannanoa, North Carolina 28778
Sent via email to [e-mail]
Subject: Application for Permit to Construct Recovery (Extraction) Wells
Duke Energy Carolinas, LLC
Cliffside Steam Station
Mooresboro, NC 28114-7754
Dear Mr. Davidson:
526 South Church St
Mail Code EC13K
Charlotte, NC 28202
M: 980.373.6563
Duke Energy Carolinas, LLC (Duke Energy), is submitting the enclosed application package to obtain a permit to
install 22 recovery (extraction) wells as part of the pilot test phase of a proposed groundwater remediation system
at the Cliffside Steam Station (Site), located in Mooresboro, North Carolina.
As detailed in the Corrective Action Plan (CAP) Update Report (SynTerra 2019)1, Duke Energy is implementing a
multi -component CAP, including source control through excavation of the ash basins 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 a combination of groundwater extraction and clean water infiltration
wells to address constituents of interest (COI) concentrations in groundwater greater than applicable standards at
or beyond the Geographic Limitation of the Active Ash Basin, groundwater extraction at the Unit 5 Inactive Ash
Basin, and phytoremediation and tree wells at the Former Units 1-4 Ash Basin.
This Application for Permit to Construct a Recovery Well System is for the installation of 22 individual extraction
wells (EX-U5-01 through EX-U5-22) as part of the pilot test phase of groundwater remediation system installation
in the Unit 5 Ash Basin.
The Application for Permit to Construct a Recovery Well System is attached, along with additional supporting
information in Attachment 1 for your review and approval. We would appreciate the NCDEQ's timely review of
this submittal package as we proactively implement the groundwater remediation strategy for this Site.
SynTerra. 2019. Correction Action Plan Update — Cliffside Steam Station.

Mr. Landon Davidson
July 1, 2020
Page 2 of 2
Please contact me at 980.373.6563 with any questions or concerns regarding this application.
Sincerely,
Scott E. Davies, P.G.
Project Director
Copies:
Ted Campbell, NCDEQ Division of Water Resources, Asheville Regional Office
Steve Lanter, NCDEQ Division of Water Resources, Central Office
Eric Smith, NCDEQ Division of Water Resources, Central Office
Elizabeth Werner, NCDEQ Division of Waste Management
Ryan Czop, Duke Energy
Brian Wilson, ERM
Enclosures:
1 Permit Application to Construct a Recovery Well System
2 Attachment 1 which includes:
a. Figure 1 - Ash Basin Layout Map
b. Figure 2 - Extraction Well Construction Layout
c. Figure 3 - Groundwater Extraction Well Schematic
d. 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 1. 2020
2. County: Rutherford & Cleveland
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: 526 South Church Street, Charlotte, NC 28202-1803
Applicant's Email Address (if available): N/A
5. Contact Person (if different than Applicant): Scott E. Davies, PG Telephone: [phone]
Contact Person's Mailing Address: 526 South Church Street, Mail Code EC13K, Charlotte, NC 28202
Contact Person's Email Address (if available): Scott. Davies(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) Cliffside Steam Station, 573 Duke Power Road (Cleveland Co. PIN
15748404450) City Mooresboro County Rutherford & Cleveland Zip Code 28114-7754
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: Electric Generating Station (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).
NPDES Permit No. NC0005088, Industrial Stormwater Permit No. NCS000571
11. Type of contaminants being monitored or recovered: Inorganic constituents and total dissolved solids
(ex: organics, nutrients, heavy metals, etc.)
12. Are there any existing wells associated with the proposed well(s)? If yes, how many? 49 monitoring wells in the Unit 5 Ash Basin
area
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 50 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: South Atlantic Environmental Drilling and Construction Co., Inc. (SAEDACCO)
Certification No.: 4439
Well Contractor Address: 9088 Northfield Drive. Fort Mill. SC 29707
PROPOSED WELL CONSTRUCTION INFORMATION
As required by 15A NCAC 02C .0105(f)(7), attach a well construction diagram of each well showing the following: See Attachment 1
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: 22
3. Number of wells to be constructed in bedrock: 0
5. How will the well(s) be secured? Site has controlled
access and wells will be fitted with lockable steel vaults.
6. Estimated beginning construction date: July 27, 2020
4. Total Number of wells to be constructed: 22 7. Estimated construction completion date: March 31,
(add answers from 2 and 3) 2021
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: See Att. 1
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
Digitally signed by Scott
Scott Davies DDa.tet.
: 2020.07.01
13:11:23-04'00'
Signature of Applicant or *Agent
Project Director
Title of Applicant or *Agent
Scott Davies * If signing as Agent, attach authorization agreement
stating Printed name of Applicant or *Agent 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
2090 U.S. Highway 70 Washington Regional Office
Swannanoa, NC 28778 943 Washington Square Mall Winston-Salem Regional Office
Phone: [phone] Washington, NC 27889 450 W. Hanes Mill Road
Fax: [phone] Phone: [phone] Suite 300
Fax: [phone] Winston-Salem, NC 27105
Fayetteville Regional Office Phone: [phone]
225 Green Street, Suite 714 Wilmington Regional Office Fax: [phone]
Fayetteville, NC 28301-5094 127 Cardinal Drive Extension
Phone: [phone] Wilmington, NC 28405 GW-22MR Rev. 3-1-2016
Fax: [phone] 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
Phone: [phone]
Fax: [phone]

Attachment 1
a. Figure 1 - Ash Basin Layout Map
b. Figure 2 - Extraction Well Construction Layout
c. Figure 3 - Groundwater Extraction Well Schematic
d. Table 1 - Extraction Well Construction Summary

UNITS 1-4 ASH BASIN
(U1-4 AB)
SOURCE AREA
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TITLE
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Cliffside Steam Station
Mooresboro, North Carolina
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LEVEL SWITCHES
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1.25-INCH TO 1.5 INCH
STILLING WELL
HIGH LEVEL SWITCH
i
BENTONITE CHIPS
MIN. 2 FEET
CASING CENTRALIZER
6" WELL SCREEN
(WIRE WRAPPED SS)
LOW LEVEL SWITCH
NOT TO SCALE
GROUND SURFACE
EXTRACTION PUMP
POWER LEAD
1-INCH DROP PIPE CS
BENTONITE CEMENT GROUT
IN CASING ANNULUS
10-INCH TO 12-INCH BOREHOLE
6-INCH WELL CASING
THREADED JOINTS
BENTONITE CHIP SEAL
SAND PACK
CHECK VALVE
ELECTRIC SUBMERSIBLE
WELL PUMP
Figure 3
Groundwater Extraction Well Schematic
ClAside Steam Station
Mooresboro, North Carolina
Environmental Resources Management
www.erm.com
ERM

Cliff (side Steam Station
Mooresborc, North Carolina
I aDle 7 - r-mraction Well F.:onstruction uemis
Well Screen
Grout
Fasting
Northing
Screen
Riser
Borehole
and Riser
Well Screen
Sand Pack
Bentonite
Slurry
Cement and
Total
Additional
Well I.D.
Well Purpose
Type of Well
Location
Diameter
Interval
Interval
Seal
Flushmount
Depth
(NAD 83)
(NAD 83)
Material
Material
(inches)
Diameter
(ft bgs)
(ft bgs)
(ft bgs)
Interval
(ft bgs)
(ft bgs)
Notes
(inches)
(ft bgs)
Vertical
North of Cooling
Wire Wrapped
EX-1.15-1
Saprolite/Transition Zone
1174126.90
545805.10
Sch 80 PVC
10 - 12
6
25 - 118
23 - 118
20 - 23
2 - 20
0-2
118
Unit 5 Area
Extraction
Tower A
304L SS
Vertical
North of Cooling
Wire Wrapped
EX-1_15-2
Saprolite/Transition Zone
1174180.80
545752.90
Sch 80 PVC
10 - 12
6
25 - 118
23 - 118
20 - 23
2 - 20
0-2
118
Unit 5 Area
Extraction
Tower A
304L SS
Vertical
North of Cooling
Wire Wrapped
EX-1.15-3
Extraction
Saprolite/Transition Zone
Tower A
1174241.40
545707.50
304L SS
Sch 80 PVC
10 - 12
6
25 - 126
23 - 126
20 - 23
2 - 20
0-2
126
Unit 5 Area
Vertical
North of Cooling
Wire Wrapped
EX-1_15-4
Saprolite/Transition Zone
1174000.70
545764.70
Sch 80 PVC
10 - 12
6
25 - 118
23 - 118
20 - 23
2 - 20
0-2
118
Unit 5 Area
Extraction
Tower A
304L SS
Vertical
North of Cooling
Wire Wrapped
EX-1.15-5
Extraction
Saprolite/Transition Zone
Tower A
1173854.20
545720.90
304L SS
Sch 80 PVC
10 - 12
6
25 - 126
23 - 126
20 - 23
2 - 20
0-2
126
Unit 5 Area
Vertical
South of Cooling
Wire Wrapped
EX-1_15-6
Saprolite/Transition Zone
1173945.10
545512.20
Sch 80 PVC
10 - 12
6
25 - 110
23 - 110
20 - 23
2 - 20
0-2
110
Unit 5 Area
Extraction
Tower A
304L SS
Vertical
South of Cooling
Wire Wrapped
EX-US-7
Saprolite/Transition Zone
1174014.10
545517.20
Sch 80 PVC
10 - 12
6
25 - 118
23 - 118
20 - 23
2 - 20
0-2
118
Unit 5 Area
Extraction
Tower A
304L SS
Vertical
South of Cooling
Wire Wrapped
EX-1_15-8
Saprolite/Transition Zone
1174093.30
545524.00
Sch 80 PVC
10 - 12
6
25 - 134
23 - 134
20 - 23
2 - 20
0-2
134
Unit 5 Area
Extraction
Tower A
304L SS
Vertical
South of Cooling
Wire Wrapped
EX-1.15-9
Saprolite/Transition Zone
1174201.00
545547.50
Sch 80 PVC
10 - 12
6
25 - 134
23 - 134
20 - 23
2 - 20
0-2
134
Unit 5 Area
Extraction
Tower A
304L SS
Vertical
South of Cooling
Wire Wrapped
EX-1-15-10
Saprolite/Transition Zone
1174148.80
545466.70
Sch 80 PVC
10 - 12
6
25 - 142
23 - 142
20 - 23
2 - 20
0-2
142
Unit 5 Area
Extraction
Tower A
304L SS
Vertical
South of Cooling
Wire Wrapped
EX-1.15-11
Saprolite/Transition Zone
1174249.80
545401.00
Sch 80 PVC
10 - 12
6
25 - 142
23 - 142
20 - 23
2 - 20
0-2
142
Unit 5 Area
Extraction
Tower A
304L SS
Vertical
South of Cooling
Wire Wrapped
EX-1-15-12
Saprolite/Transition Zone
1174259.90
545337.10
Sch 80 PVC
10 - 12
6
25 - 142
23 - 142
20 - 23
2 - 20
0-2
142
Unit 5 Area
Extraction
Tower A
304L SS
Vertical
West of Cooling
Wire Wrapped
EX-1.15-13
Saprolite/Transition Zone
g174353.06
544907.98
Sch 80 PVC
10
6
20 - 35
17 - 35
14 - 17
2 - 14
0-2
35
Unit 5Area
Extraction
Tower B
304L SS
Vertical
West of Cooling
Wire Wrapped
EX-U5-14
Saprolite/Transition Zone
1174319.49
544919.74
Sch 80 PVC
10
6
20 - 35
17 - 35
14 - 17
2 -14
0-2
35
Unit 5 Area
Extraction
Tower B
304L SS
Vertical
West of Cooling
Wire Wrapped
EX-US-15
Saprolite/Transition Zone
1174297.95
544947.48
Sch 80 PVC
10
6
20- 35
17 - 35
14 - 17
2 - 14
0-2
35
Unit 5Area
Extraction
Tower B
304L SS
Vertical
West of Cooling
Wire Wrapped
EX-U5-16
Saprolite/Transition Zone
1174289.43
544982.27
Sch 80 PVC
10
6
20-35
17-35
14-17
2-14
0-2
35
Unit Area
Extraction
Tower B
304L SS
Vertical
West of Cooling
Wire Wrapped
EX-1.15-17
Saprolite/Transition Zone
1174285.46
545018.05
Sch 80 PVC
10
6
20 - 35
17 - 35
14 - 17
2 - 14
0-2
35
Unit 5 Area
Extraction
Tower B
304L SS
Vertical
West of Cooling
Wire Wrapped
EX-U5-18
Saprolite/Transition Zone
1174281.48
545053.83
Sch 80 PVC
10
6
20-35
17-35
14-17
2-14
0-2
35
Unit 5Area
Extraction
Tower B
304L SS
Vertical
West of Cooling
Wire Wrapped
EX-1.15-19
Saprolite/Transition Zone
1174277.50
545089.61
Sch 80 PVC
10
6
20-35
17-35
14-17
2-14
0-2
35
Unit 5Area
Extraction
Tower B
304L SS
Vertical
West of Cooling
Wire Wrapped
EX-U5-20
Saprolite/Transition Zone
1174273.53
545125.39
Sch 80 PVC
10
6
20 - 35
17 - 35
14 - 17
2 -14
0-2
35
Unit 5 Area
Extraction
Tower B
304L SS
Vertical
West of Cooling
Wire Wrapped
EX-US-21
Saprolite/Transition Zone
1174269.36
545161.15
Sch 80 PVC
10
6
20-35
17-35
14-17
2-14
0-2
35
UnitSArea
Extraction
Tower B
304L SS
Vertical
West of Cooling
Wire Wrapped
EX-U5-22
Extraction
Saprolite/Transition Zone
Tower B
1174264.97
545196.88
304L SS
Sch 80 PVC
10
6
20-35
17-35
14-17
2-14
0-2
35
Unit 5Area
Notes:
Ft bgs: Feet below ground surface
NAD: North American Datum
1. Total number of groundwater extraction wells proposed for installation as part of groundwater remediation system pilot test: 22 wells.
2. Total number of pre-existing groundwater monitoring wells present in the Unit 5 Ash Basin area: 49 wells.
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