1812_DukeMarshall_Ph5_PiezometerCompReport_ CLF24-501_CLF24-502_20251029

(' DUKE
ENERGY-.
October 29, 2025
North Carolina Department of Environmental Quality
Division of Waste Management
Solid Waste Section
2090 U.S. Highway 70
Swannanoa, NC 28778
Attn: Ms. Sarah Moutos (submitted electronically)
Re: Piezometer Abandonment Completion Report CLF24-501 and CLF24-502
Industrial Landfill No.1 - Phase 5
Permit No.: 1812-INDUS-2008
Marshall Steam Station
Terrell, North Carolina 28682
Dear Ms. Moutos:
525 South Tryon St.
Charlotte, NC 28202
Mail Code DEP-36A
Charlotte, NC 28201-1006
The Solid Waste Section approved Duke Energy's request for abandoning piezometer CLF24-501 in a letter
dated September 22, 2025, as well as a piezometer CLF24-502 in a separate letter dated September 15,
2025, both associated with Industrial Landfill No. 1 (1812-INDUS-2008) Phase 5.
Duke Energy is providing the well abandonment records for the piezometer CLF24-501 and CLF24-502 in
this submittal. The abandonments were conducted by S&ME on September 23, 2025, and September 18,
2025, respectively. Pre -abandonment groundwater levels are included in Table 1 of the attached report.
The associated GW-30 forms were submitted separately to NCDEQ by S&ME.
If you need additional information regarding this request do not hesitate to email or call me at
Anne.Davin(o)Duke-Energy.com or [phone].
Respectfully submitted,
Anne Davin, E.I.
Environmental Services
Attachments: Completion Report for Monitoring Well Abandonments (S&ME, October 2025)
cc (via e-mail): Deana Yitbarek, NCDEQ
Sherri Stanley, NCDEQ
Eliabeth Werner, NCDEQ
Dan Zakary, Duke Energy
Jake Muessen, Duke Energy
Scott La Sala, Duke Energy
John Metcalf, Duke Energy
Tyler Hardin, Duke Energy
Ashley Healy, Duke Energy
www.duke-energy.com Page 1 of 1

=0
October 13, 2025
Duke Energy
525 S. Tryon Street
Charlotte, North Carolina 28202
Attention: Ms. Anne Davin via electronic mail to [e-mail]
EHS Waste and Groundwater Programs
Reference: Completion Report for Monitoring Well Abandonments
CFL-24-501, CFL-24-502
Duke Energy Marshall Steam Station
Catawba County, North Carolina
S&ME Project No. 21410007, Ph. 02
Dear Ms. Davin:
In support of continued grading operations for the Marshall Steam Station Industrial Landfill, Permit No. 1812-
INDUS-2008, and at Duke Energy's request, S&ME abandoned groundwater monitoring wells CFL-24-501 and CFL-
24-502. The report and the attached information serve to document these well abandonments.
The wells were abandoned by North Carolina Certified Well Driller Jay Little (2717A) and an S&ME geologist in
accordance with the 15A NCAC 02C Section .0113 Standards for the Abandonment of Wells (02C Standards). Each
abandonment comprised the following steps:
If present, dedicated tubing, pumps, or transducers were removed from the well and left on site with Duke
Energy personnel.
Depth to water from ground surface was measured using an electronic water level meter.
Each well was abandoned using bentonite pellets (versus mixing Quik-Grout as access to the wells was
limited at the time of abandonment).
The following documentation supporting the abandonments is attached:
♦ Figure 1, Monitoring Well Abandonments (September 2025)
♦ Table 1, Summary of Monitoring Well Abandonments
♦ Well Abandonment Records (GW-30 Forms)
As required by the 02C Standards, S&ME submitted the Well Abandonment Records (GW-30 Forms) to the North
Carolina Department of Environmental Quality (NCDEQ), Division of Water Resources (DWR) Information Processing
Unit under separate cover.
S&ME, Inc. 1 301 Zima Park Road I Spartanburg, SC 29301 1 p 864-574-2360 1 www.smeinc.com

Completion Report for Monitoring Well Abandonments
CLF-24-501, CLF-24-502
Duke Energy Marshall Steam Station
October 13, 2025
Page 2
S&ME appreciates each and every opportunity to be of service to Duke Energy. Please contact us if you have any
questions regarding this report.
Sincerely,
S&ME, Inc.
Sergey Goretoy, P.G.
Project Manager
[e-mail]
Attachments:
41 �
Skyler J. Ray, P.G.
Project Geologist
[e-mail]
♦ Figure 1, Monitoring Well Abandonments (September 2025)
♦ Table 1, Summary of Monitoring Well Abandonments
1.1 Well Abandonment Records (GW-30 Forms)
cc: John Metcalf, [e-mail]
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Attachments

Attachment I — Figures

N
. ,
CFL-24-501
CFL-24-502
few }.J• P� 'a ... ...i .,._.. �� _.-. _..._ - '�' ��'�
5.+�'j�t_`1PA_\\`,\\��_ .ems �-. '►
THIS MAP IS FOR INFORMATIONAL PURPOSES ONLY. ALL FEATURE
LOCATIONS DISPLAYED ARE APPROXIMATED. THEY ARE NOT BASED
ON CIVIL SURVEY INFORMATION, UNLESS STATED OTHERWISE.
® Approximate Monitoring Well Location
Basemap Source: September 23, 2025 Propeller Aerial Marshall
Monitoring Well Abandonments (September 2025)
IIIE Duke Energy - Marshall Steam Station
Catawba County, North Carolina
0 100
200
GRAPHIC SCALE
(IN FEET)
SCALE:
FIGURE NO.
1 " = 100'
DATE:
10/13/2025
PROJECT NUMBER

Attachment II — Tables

Table 1: Summary of Monitoring Well Abandonments
Monitoring Wells CFL-24-501 and CFL-24-502
Duke Energy - Marshall Steam Station
S&ME Project No. 21410007, Ph. 02
Total Well
Casing Stick -Up
Depth to Water
i
2,3
Total Well Depth
4
Screened Interval
s
Northing
s
Easting
Date
Prior to
Well ID
Depth
Height
(ft-bgs)
(ft-bgs)
(ft-NAD83)
(ft-NAD83)
Abandoned
Abandonment
(ft-toc)
(ft-o9s)
(ft-toc)
CFL-24-501
32.7
2.7
30.0
20.0 to 30.0
685107.6
1412762.4
9/23/2025
23.5
CFL-24-502
28.9
3.9
25.0
15.0 to 25.0
685102.1
1412573.5
9/18/2025
12.4
Notes:
1 Each monitoring well consisted of 2-inch inner diameter inner polyvinyl chloride (PVC) casing
2Total Well Depth - recorded from well togs
3 Screened intervals were obtained from well togs
4 Northing and Easting coordinates: Approximated from Propeller.
ft: feet
toc: top of casing
ags: above ground surface
bgs: below ground surface
NAD83: North American Datum 1983

Attachment III - Well Abandonment Records (GW-30 Forms)

WELL ABANDONMENT RECORD
1. Well Contractor Information:
Jay Little
Well Contractor Name (or well owner personally abandoning well on his/her property)
2717A
NC Well Contractor Certification Number
SWE Inc.
Company Name
2. Well Construction Permit #: Not Applicable
List all applicable well construction permits (i.e. UIC County, State, Variance, etc) ifknown
3. Well use (check well use):
Water Supply Well:
❑Agricultural ❑Municipal/Public
❑Geothermal (Heating/Cooling Supply) ❑Residential Water Supply (single)
❑Industrial/Commercial El Residential Water Supply (shared)
❑Irrigation
Non -Water Supply Well:
OMonitorine ❑Recovery
El Aquifer Recharge
❑Aquifer Storage and Recovery
El Aquifer Test
❑Experimental Technology
❑Geothermal (Closed Loop)
❑Geothermal (Heating/Cooling
4. Date well(s) abandoned:
El Groundwater Remediation
❑ Salinity Barrier
❑ Stormwater Drainage
❑ Subsidence Control
❑Tracer
El Other (explain under 7g)
9-23-2025
5a. Well location:
Duke Energy Carolinas Not Applicable
Facility/Owner Name Facility iD# (if applicable)
8320 NC Hwy 150, Terrell, NC 28673
Physical Address, City, and Zip
Catawba 461803426350
County
Parcel Identification No. (PIN)
5b. Latitude and longitude in degrees/minutes/seconds or decimal degrees:
(if well field, one lat/long is sufficient)
N W
CONSTRUCTION DETAILS OF WELL(S) BEING ABANDONED
Attach well construction record(s) ifavailable. For multiple injection or non -water supply wells
ONLY with the same constructionlabandonment, you can submit one form.
6a. Well ID#: CFL-24-501
6b. Total well depth: 30.0 (ft.)
6c. Borehole diameter: 6.0 (in.)
6d. Water level below ground surface: 20.8 (ft.)
6e. Outer casing length (if known): not applicable (ft.)
6f. Inner casing/tubing length (if known): 20.0 (ft.)
6g. Screen length (if known): 1 0.0 (ft.)
For Internal Use ONLY:
WELL ABANDONMENT DETAILS
7a. For Geoprobe/DPT or Closed -Loop Geothermal Wells having the same
well construction/depth, only 1 GW-30 is needed. Indicate TOTAL NUMBER of
wells abandoned: 7b. Approximate volume of water remaining in well(s): 1 .5 (gal.)
FOR WATER SUPPLY WELLS ONLY:
7c. Type of disinfectant used:
7d. Amount of disinfectant used:
7e. Sealing materials used (check all that apply):
❑ Neat Cement Grout S Bentonite Chips or Pellets
❑ Sand Cement Grout ❑ Dry Clay
❑ Concrete Grout ❑ Drill Cuttings
❑ Specialty Grout ❑ Gravel
❑ Bentonite Slurry ❑ Other (explain under 7g)
7f. For each material selected above, provide amount of materials used:
50 pounds of bentonite pellets
7g. Provide a brief description of the abandonment procedure:
Bentonite pellets were slowly poured into the well, and water
was added to hydrate the pellets, until it reached the top of the
PVC Casing.
8. Certification:
10/3/2025
Signature of Certified Well Contractor or Well Owner Date
By signing this form, I hereby certify that the well(s) was (were) abandoned in
accordance with 1 SA NCAC 02C .0100 or 2C .0200 Well Construction Standards
and that a copy of this record has been provided to the well owner.
9. Site diagram or additional well details:
You may use the back of this page to provide additional well site details or well
abandonment details. You may also attach additional pages if necessary.
SUBMITTAL INSTRUCTIONS
10a. For All Wells: Submit this form within 30 days of completion of well
abandonment to the following:
Division of Water Resources, Information Processing Unit,
1617 Mail Service Center, Raleigh, NC 27699-1617
10b. For Iniection Wells: In addition to sending the form to the address in 10a
above, also submit one copy of this form within 30 days of completion of well
abandonment to the following:
Division of Water Resources, Underground Injection Control Program,
1636 Mail Service Center, Raleigh, NC 27699-1636
loc. For Water Supply & Iniection Wells: In addition to sending the form to the
address(es) above, also submit one copy of this form within 30 days of completion
of well abandonment to the county health department of the county where
abandoned.
Form GW-30 North Carolina Department of Environmental Quality - Division of Water Resources Revised 2-22-2016

WELL ABANDONMENT RECORD
1. Well Contractor Information:
Jay Little
Well Contractor Name (or well owner personally abandoning well on his/her property)
2717A
NC Well Contractor Certification Number
SWE Inc.
Company Name
2. Well Construction Permit #: Not Applicable
List all applicable well construction permits (i.e. UIC County, State, Variance, etc) ifknown
3. Well use (check well use):
Water Supply Well:
❑Agricultural ❑Municipal/Public
❑Geothermal (Heating/Cooling Supply) ❑Residential Water Supply (single)
❑Industrial/Commercial El Residential Water Supply (shared)
❑Irrigation
Non -Water Supply Well:
OMonitorine ❑Recovery
El Aquifer Recharge
❑Aquifer Storage and Recovery
El Aquifer Test
❑Experimental Technology
❑Geothermal (Closed Loop)
❑Geothermal (Heating/Cooling
4. Date well(s) abandoned:
El Groundwater Remediation
❑ Salinity Barrier
❑ Stormwater Drainage
❑ Subsidence Control
❑Tracer
El Other (explain under 7g)
9-18-2025
5a. Well location:
Duke Energy Carolinas Not Applicable
Facility/Owner Name Facility iD# (if applicable)
8320 NC Hwy 150, Terrell, NC 28673
Physical Address, City, and Zip
Catawba 461803426350
County
Parcel Identification No. (PIN)
5b. Latitude and longitude in degrees/minutes/seconds or decimal degrees:
(if well field, one lat/long is sufficient)
N W
CONSTRUCTION DETAILS OF WELL(S) BEING ABANDONED
Attach well construction record(s) ifavailable. For multiple injection or non -water supply wells
ONLY with the same constructionlabandonment, you can submit one form.
6a. Well ID#: CFL-24-502
6b. Total well depth: 25.0 (ft.)
6c. Borehole diameter: 6.0 (in.)
6d. Water level below ground surface: 8.5 (ft.)
6e. Outer casing length (if known): not applicable (ft.)
6f. Inner casing/tubing length (if known): 1 5. 0 (ft.)
6g. Screen length (if known): 1 0.0 (ft.)
For Internal Use ONLY:
WELL ABANDONMENT DETAILS
7a. For Geoprobe/DPT or Closed -Loop Geothermal Wells having the same
well construction/depth, only 1 GW-30 is needed. Indicate TOTAL NUMBER of
wells abandoned:
7b. Approximate volume of water remaining in well(s): 2.7 (gal.)
FOR WATER SUPPLY WELLS ONLY:
7c. Type of disinfectant used:
7d. Amount of disinfectant used:
7e. Sealing materials used (check all that apply):
❑ Neat Cement Grout S Bentonite Chips or Pellets
❑ Sand Cement Grout ❑ Dry Clay
❑ Concrete Grout ❑ Drill Cuttings
❑ Specialty Grout ❑ Gravel
❑ Bentonite Slurry ❑ Other (explain under 7g)
7f. For each material selected above, provide amount of materials used:
45 pounds of bentonite pellets
7g. Provide a brief description of the abandonment procedure:
Bentonite pellets were slowly poured into the well, and water
was added to hydrate the pellets, until it reached the top of the
PVC Casing.
8. Certification:
10/3/2025
Signature of Certified Well Contractor or Well Owner Date
By signing this form, I hereby certify that the well(s) was (were) abandoned in
accordance with 1 SA NCAC 02C .0100 or 2C .0200 Well Construction Standards
and that a copy of this record has been provided to the well owner.
9. Site diagram or additional well details:
You may use the back of this page to provide additional well site details or well
abandonment details. You may also attach additional pages if necessary.
SUBMITTAL INSTRUCTIONS
10a. For All Wells: Submit this form within 30 days of completion of well
abandonment to the following:
Division of Water Resources, Information Processing Unit,
1617 Mail Service Center, Raleigh, NC 27699-1617
10b. For Iniection Wells: In addition to sending the form to the address in 10a
above, also submit one copy of this form within 30 days of completion of well
abandonment to the following:
Division of Water Resources, Underground Injection Control Program,
1636 Mail Service Center, Raleigh, NC 27699-1636
loc. For Water Supply & Iniection Wells: In addition to sending the form to the
address(es) above, also submit one copy of this form within 30 days of completion
of well abandonment to the county health department of the county where
abandoned.
Form GW-30 North Carolina Department of Environmental Quality - Division of Water Resources Revised 2-22-2016