WI0300459_Permit (Issuance)_20211005

NC Department of Environmental Quality — Division of Water Resources (DWR)
NOTIFICATION OF INTENT (NOI) TO CONSTRUCT OR OPERATE INJECTION WELLS
The following are "permitted by rule" and do not require an individual permit when constructed in accordance
with the rules of 15A NCAC 02C.0200 (NOTE: This form must be received at least 14 DAYS prior to injection)
AQUIFER TEST WELLS (15A NCAC 02C .0220)
These wells are used to inject uncontaminated fluid into an aquifer to determine aquifer hydraulic characteristics.
IN SITU REMEDIATION (I5A NCAC 02C .0225) or TRACER WELLS 0_5A NCAC 02C .0229):
—I) Passive Injection Systems - In -well delivery systems to diffuse injectants into the subsurface. Examples include
ORC socks, iSOC systems, and other gas infusion methods (Note: Injection Event Records (IER) do not need to be
submitted for replacement of each sock used in ORC systems).
2) Small -Scale Injection Operations — Injection wells located within a land surface area not to exceed 10,000
square feet for the purpose of soil or groundwater remediation or tracer tests. An individual permit shall be required
for test or treatment areas exceeding 10,000 square feet.
3) Pilot Tests - Preliminary studies conducted for the purpose of evaluating the technical feasibility of a
remediation strategy in order to develop a full scale remediation plan for future implementation, and where the
surface area of the injection zone wells is located within an area that does not exceed five percent of the land surface
above the known extent of groundwater contamination. An individual permit shall be required to conduct more
than one pilot test on any separate groundwater contaminant plume.
4) Air Injection Wells - Used to inject ambient air to enhance in -situ treatment of soil or groundwater.
5) In -Situ Thermal Wells (1ST) — Used to `heat' contaminated groundwater to enhance remediation.
Print Clearly or Type Information. Illegible Submit, ' Will Be Returned as Incomplete.
DATE: September 15 , 202I
PERMIT NO. (to be filled in by DWR)
NOTE- If this NOI is being submitted as notification of a modification of a previously issued NOI for this site (e.g.,
different injection wells, plume, additives, etc.) and still meets the deemed permitted by rule criteria, provide the
previously assigned permit tracking number and any needed relevant information to assess and approve injection:
Permit No. WI
Issued Date:
A. WELL TYPE TO BE CONSTRUCTED OR OPERATED
(1) X Air Injection Well Complete sections B through F, J, M
(2) Aquifer Test Well Complete sections B through F, J, M
(3) Passive Injection System Complete sections B through F, H-M
(4) Small -Scale Injection Operation Complete sections B through M
(5) Pilot Test Complete sections B through M
(6) Tracer Injection Well Complete sections B through M
(7) In -Situ Thermal (1ST) Well Complete sections B through M
B. STATUS OF WELL OWNER: Business/Organization
Deemed Permitted GW Remediation NOI Rev. 2-17-2020 Page 1

C. WELL OWNER(S) — State name of Business/Agency, and Name and Title of person delegated authority to
sign on behalf of the business or agency:
Name(s): Duke Energy, Christopher Gilbert, PE, EHS Remediation Unit
Mailing Address: 526 South Church Street
City: Charlotte State: NC Zip Code: 28202 County: Mecklenburg
Day Tele No.:
Cell No.: 828-713-0097
EMAIL Address: [e-mail] Fax No.: N/A
D. PROPERTY OWNER(S) (if different than well owner/applicant)
Name and Title:
Company Name
Mailing Address:
City: State: Zip Code:
County:
Day Tele No.: Cell No.:
EMAIL Address: Fax No.:
E. PROJECT CONTACT (Typically Environmental Consulting/Engineering Firm)
Name and Title: Mike Hays, Principal Consultant/Geologist
Company Name ERM NC Inc.
Mailing Address: 300 Summit Avenue, Suite 330
City: Charlotte State: _NC_ Zip Code: 28203 County: Mecklenburg
Day Tele No.: 704-737-6625 Cell No.: 704-737-6625
EMAIL Address: [e-mail] Fax No.: N/A
F. PHYSICAL LOCATION OF WELL SITE
(1) Facility Name & Address: Duke Energy — Marshall Steam Station
8320 NC-150
City: Sherrills Ford
County: Catawba County Zip Code: 28673
(2) Geographic Coordinates: Latitude**: 35__° 35' 56.23_" or °.
Longitude**: 80__° 57_' 51.89_" or °.
Reference Datum: Accuracy:
Method of Collection: Gooele Earth
**FOR AIR INJECTION AND AQUIFER TEST WELLS ONLY: A FACILITY SITE MAP WITH PROPERTY
BOUNDARIES MAY BE SUBMITTED IN LIEU OF GEOGRAPHIC COORDINATES.
G. TREATMENT AREA
Land surface area of contaminant plume: square feet
Land surface area of inj. well network: square feet (< 10,000 f12 for small-scale injections)
Percent of contaminant plume area to be treated: (must he < 5% of plume for pilot test injections)
Deemed Permitted GW Remediation NOI Rev. 2-17-2020 Page 2

H. INJECTION ZONE MAPS — Attach the following to the notification.
(I) Contaminant plume map(s) with isoconcentration lines that show the horizontal extent of the
contaminant plume in soil and groundwater, existing and proposed monitoring wells, and existing and
proposed injection wells; and
(2) Cross-section(s) to the known or projected depth of contamination that show the horizontal and vertical
extent of the contaminant plume in soil and groundwater, changes in lithology, existing and proposed
monitoring wells, and existing and proposed injection wells.
(3) Potentiometric surface map(s) indicating the rate and direction of groundwater movement, plus existing
and proposed wells.
I. DESCRIPTION OF PROPOSED INJECTION ACTIVITIES AT THE SITE — Provide a brief narrative
regarding the cause of the contamination, and purpose, scope, goals of the proposed injection activity:
J. WELL CONSTRUCTION DATA
( I )
(2)
(3)
No. of injection wells: MW- I D (Existing) Proposed _Existing (provide NC Well
Construction Record (GW- 1) for each well)
Appx. injection depths (BLS): 35'- 40' BLS
For Proposed wells or Existing wells not having GW-1 s, provide well construction details for each
injection well in a diagram or table format. A single diagram or line in a table can be used for
multiple wells with the same construction details. Well construction details shall include the
following (indicate if construction is proposed or as -built):
(a) Well type as permanent, Geoprobe/DPT, or subsurface distribution infiltration gallery
(b) Depth below land surface of casing, each grout type and depth, screen, and sand pack
(c) Well contractor name and certification number
K. INJECTION SUMMARY
NOTE: Only injectants approved by the epidemiology section of the NC Division of Public Health, Department
of Health and Human Services can be injected. Approved injectants can be found online at
http://dey.nc.cov/about/dig isions/water-resource~/water-resources-Hermits/wastewater-branch/eround-water-
protection/e.round-w ater-approved-injectants. All other substances must be reviewed by the DHHS prior to use.
Contact the UIC Program for more info if you wish to .get approval for a different additive. However, please
note it may take 3 months or longer. If no injectants are to be used use N/A.
Injectant: Total Amt. to be injected (gal)/event:
Injectant: Total Amt. to be injected (gal)/event:
Injectant: Total Amt. to be injected (gal)/event:
Injectant: Total Amt. to be injected (gal)/event:
Deemed Permitted GW Remediation NOI Rev. 2-17-2020 Page 1

"Owner" means any person who holds the fee or other property rights in the well being constructed. A well
is real property and its construction on land shall be deemed to vest ownership in the land owner, in the
fls AC,GNT c
J(-�-1( kaiictImh 641 /VLatshA1(
Signature* of Prue tot ner (if diffefrom applicant) Printni Type Full Name and Title
*An access agreement between the applicant and propert) owner mal be submitted in lieu Oa signature on this form.
Inlectant. Total Amt. to be injected (gal)/event:
Total Amt. to be injected (gal/event):
No. of separate injection events: Total Amt. to be injected (gal):
Source of Water (it applicable):
L. MONITORING PLAN — Describe below or in separate attachment a monitoring plan to be used to determine
if violations of groundwater quality standards specified in Subchapter 02L result from the injection activity.
M. SIGNATURE OF APPLICANT AND PROPERTY OWNER
Well Owner/Applicant: 1 hereby certify. under penalty of law, that 1 am familiar with the information
submitted in this document and all attachments thereto and that, based on nav inquiry of those indii ideal.+
immediately responsible for obtaining said information, 1 believe that the information is true, accurate and
complete. 1 am aware that there are significant penalties, including the possibility of fines anc! imprisonment,
for submitting false information. 1 agree to construct, operate, maintain, repair, and if applicable, abandon the
injection well and all related appurtenances in accordance with the 15A NC-1 C 02C 0200 Rules."
Christopher Gilbert, PE — Duke Energy EHS Remediation Unit
Signature of Applicant Print or Type Full Name and Title
Property Owner cif the property is not owned by the Well Owner/Applicantl:
"As owner of the property on which the injection well(s) are to be constructed and operated, 1 hereby consent to
allow the applicant to construct each injection tt ell as outlined in this application and agree that it shall be the
responsibility of the applicant to ensure that the injection well(s) conform to the Well Construction Standards
(1 ?A NCAC 02C .0200)."
absence of contrar agreement jn writing.
Please send 1 (one) hard color copy of this NOI along with a copy on an attached CD or Flash Drive at least
two (2) weeks prior to injection to:
DWR — UIC Program
1636 Mail Service Center
Raleigh, NC 27699-1636
Telephone: [phone]
Deemed Permitted GW Remediation NO1 Rev 2-17 2020
Page 4

N
3\
0 2,000
Feet
* Site Location
Overall Site Parcel Boundary
Environmental Resources Management
ERM www.erm.com
Source: Copyright:© 2013 National Geographic Society, i-cubed
A
0 2,000
Feet
1:24,000 1 inch = 2,000 feet
Figure 1
Site Location Map
Marshall Steam Station
Sherrills Ford
Catawba County, North Carolina
Coordinate System: GCS WGS 1984

A1A/AI OSA A
0)
E
0)
-63
W
0)
U
0
0
00
m
0
a
MW 1 r//]
758.39
MW-1 Dak
757.75 MW-7,
a 758.34
MW-4
756.86
EPthil
Lake Norman
///,
s
Approximate Extent of Soil Abatement Area
Approximate Location of the Former UST
Surface Water Sample Location
Saprolite Monitoring Well
Residuum Monitoring Well
Approximate Drive Point Location
Groundwater Elevation Contour
Notes:
Groundwater measurements collected on 29 July 2021.
Measurements shown in feet above mean sea level.
Figure 2
Groundwater Elevation Map - July 2021
Marshall Steam Station
Sherrils Ford
Catawba County, North Carolina
Environmental Resources Management
www.erm.com ERM
Source: NCOneMap Orthoimagery
Sources: Esri, HERE, Garmin, Intermap, increment P Corp., GEBCO, USGS, FAO, NPS, NRCAN, GeoBase, IGN, Kadaster NL, Ordnance Survey, Esri Japan, METI, Esri China (Hong Kong), (c) OpenStreetMap contributors, and the GIS User Community
Coordinate System: NAD 1983 StatePlane North Carolina FIPS 3200 Feet

IlrIA1A/A1 OSA A
0)
E
n
W
0)
U
0
0
0
0
0
m
0
a
NC2L GW
Standards
Benzene (ug/L) 1.0
Ethylbenzene (ug/L) 600
Isopropyl ether (ug/L) 70
Methyl tert-butyl ether (ug/L) 20
Naphthalene (ug/L) 6.0
Toluene (ug/L)
Vinyl chloride (ug/L)
o-Xylene (ug/L)
m,p-Xylenes (ug/L)
Xylene, Total (ug/L)
MW-06
600
0.03
500
500
500
Vinyl chloride 13.4
1:240 1 inch = 20 feet
•
10 x SW
Quality
Standards
11.9
680
200,000
190
120
110
0.25
6,000
Not Established
Not Established
Gross
Contaminate
Level
5,000
80,000
70,000
20,000
6,000
260,000
30
50,000
50,000
50,000
A
sitp
14.
•/ ir
MW-01
Benzene
Ethylbenzene
Isopropyl ether
Methyl tert-butyl ether
Naphthalene
Toluene
o-Xylene
m,p-Xylenes
Xylene, Total
16,700
795
4,250
1,680
251
4,940
803
1,680
2,480
i
t
MW-05
Methyl tert-butyl ethe
38.4
MW-03
Benzene 1.4
Isopropyl ether 72.5
MW-02
Isopropyl ether 503
Methyl tert-butyl ether 639
s
0 Erbil
LJ
N
A
///,
s
Approximate Extent of Soil Abatement Area
Approximate Location of the Former UST
Surface Water Sample Location
Saprolite Monitoring Well
Residuum Monitoring Well
Approximate Drive Point Location
Notes:
Groundwater samples collected on 29 July 2021.
Only concentrations that exceed standards are shown.
Figure 3
Groundwater Results Map - July 2021
Marshall Steam Station
Sherrils Ford
Catawba County, North Carolina
Environmental Resources Management
www.erm.com ERM
Source: NCOneMap Orthoimagery
Sources: Esri, HERE, Garmin, Intermap, increment P Corp., GEBCO, USGS, FAO, NPS, NRCAN, GeoBase, IGN, Kadaster NL, Ordnance Survey, Esri Japan, METI, Esri China (Hong Kong), (c) OpenStreetMap contributors, and the GIS User Community
Coordinate System: NAD 1983 StatePlane North Carolina FIPS 3200 Feet

Table 1
Groundwater Well Construction Data
Groundwater
Monitoring Well &
Surface Water
Location
Water Bearing Unit
Monitored
Top of Casing
Elevation,
or Datum Elevation
(feet NAVD 88)
Ground Surface
Elevation
(feet NAVD 88)
Construction Date
(mm/dd/yy)
Casing/
Screen
Diameter
(inches)
Total Well
Depth
(feet bgs)
Screen
Length
(feet)
Screened
Interval
(feet bgs)
MW-01 D*
Saprolite
771.27
771.57
03/29/18
2
40
5
35 - 40
Notes:
: data not available or applicable
1) Groundwater monitoring well elevation survey used site survey marker CCM-2 (771.01 feet NAVD 88).
NAVD 88: North American Vertical Datum of 1988
bgs - below ground surface
* Well construction details are as -built
Marshall Steam Station, Sherrills Ford, North Carolina Page 1 of 1

ANCHOR WELL NUMBER MW-1 D
,\ZQEA "` PAGE 1 OF 2
Anchor QEA of North Carolina, PLLC
CLIENT Duke Energy PROJECT NAME (NUMBER) Marshall Steam Station (C61290-47.03)
NORTHING, EASTING , PROJECT LOCATION 8320 NC-150, Sherrills Ford, NC
DATE STARTED 3/27/18 COMPLETED 3/29/18 GROUND ELEVATION HOLE SIZE 8"
DRILLING CONTRACTOR SAEDACCO GROUND WATER LEVELS:
DRILLING METHOD HSA AT TIME OF DRILLING ---
LOGGED BY Brett Engard CHECKED BY 1 AT END OF DRILLING 34.0 ft
NOTES Hand Auger (HA), Direct Push AFTER DRILLING ---
o DEPTH
(ft)
SAMPLE TYPE
RECOVERY %
ui
cii
GRAPHIC
LOG
MATERIAL DESCRIPTION
a
a
0
d
WELL DIAGRAM
- -
- -
5
HA
100
ML
0
)o
o C
)o
oC
o
o C
)o
?..�
o
D
0
U
�
o�
0
Brown SILT with gravel and cobbles, dry. Odors. No staining or sheen observed.
8.0
23.8
138
0.0
60
0.0
'
\
�c
Yl
Casing.
Grout.
Bentonite seal.
- -
10
100
ML
:.
: •'..��
Moderately soft, orangish red SILT with fine sand, dry. Odors, no staining.
20.0
- -
15
DP
80
90
_
-
20
100
ML
Mottled brown and gray SILT.
25.0
_ _
25
100
SP
:'•'27.0
Gray SAND, saturated.
-
_
30
ML
Red and brown SILT, saturated.
30.0
100
SP
::•.
Coarse, light yellowish tan SAND, wet. No odors or staining.
32.0
- -
- -
- -
- -
35
ML
•
..
Moderate to firm, grayish brown to light brown SILT with little sand, wet. No
odors or staining.
1
35.0
(Continued Next Page)

GEN BH/TP/WELL 021510 BORING LOG AND WELL CONSTRUCTION.GPJ GINT US.GDT 11/12/18
CLIENT
NORTHING,
ANCHOR
QEA
Anchor QEA of North
Duke Energy
WELL
`'�
NUMBER MW-1 D
PAGE 2 OF 2
Station (C61290-47.03)
Carolina, PLLC
PROJECT NAME (NUMBER) Marshall Steam
EASTING ,
PROJECT LOCATION 8320 NC-150, Sherrills Ford, NC
=
a w
w—
o
35
SAMPLE TYPE
RECOVERY
of
V
ui
GRAPHIC
LOG
MATERIAL DESCRIPTION
a
°
o
d
WELL DIAGRAM
-
- -
100
SM
•.:":,
.•:�
•.'
: •`:•'
40.0
Dense, fine to coarse, orangish tan to orangish brown SAND with little silt, wet.
No odor or staining.
0.0
•
•
•..
—_
—
` �:•.'
•. •i
Filter sand.
—•.•.
Screen.
DP
40
Boring terminated at 40.0 feet.