WI0400345_More Information (Received)_20220715

ERM
8 July 2022
ERM NC, Inc.
300 West Summit Avenue
Suite 330
Charlotte, NC 28203
Michael Rogers
NCDEQ - Division of Water Resources
Underground Injection Control Program
1636 Mail Service Center
Raleigh, North Carolina 27699-1636
Telephone: [phone]
[e-mail]
Telephone: [phone]
Fax: [phone]
www.erm.com
via email and overnight delivery
ERM
Subject: Revisions to Application for Permit to Construct and/or Use a Well(s) for Injection
Modification to UIC Permit WI0400345
Energizer Manufacturing, Inc.
419 Art Bryan Drive
Asheboro, Randolph County, NC
NCD000822957
Dear Michael:
On behalf of Energizer Manufacturing, Inc. (Energizer), ERM NC, Inc. (ERM) is providing additional
information in response to your email request dated 30 June 2022 and our follow-up telephone
conversation on 7 July 2022 regarding the subject Application for Permit to Construct and/or Use a
Well(s) for Injection (Groundwater Remediation) package submitted in May 2022.
Enclosed is a revised version of Figure 10 - Proposed ISCO Injection Location Map depicting the
anticipated radius of influence for each sodium permanganate injection location. The estimated radius of
influence for each injection point is 15 feet based on the results of previous in situ chemical oxidation
(ISCO) pilot testing and aquifer slug testing.
The ISCO injection is proposed within the source area of volatile organic compounds (VOCs) in soil and
groundwater at the Site. Migration of the injected sodium permanganate will be limited to within the VOC
source area and the property boundary. Installation of six additional observation wells (OB-05 through
OB-10) is proposed to enhance the existing well network to monitor the movement of the sodium
permanganate within the nearby aquifer. This includes two additional observation wells than proposed
observation wells noted in the original application. An updated version of Figure 11 depicting proposed
groundwater observation well locations is also enclosed.
Installation of one new proposed observation well, identified as OB-10 on Figure 11, is subject to
limitations presented by active manufacturing operations. The proposed OB-10 well location is within a
climate -controlled area densely occupied by battery manufacturing equipment and associated
infrastructure. Well drilling activities and subsequent sampling activities may create safety hazards and
operational difficulties for Energizer and ERM staff. The proposed OB-10 well location will be reviewed by
ERM, Energizer and drilling contractor representatives at the time of planned drilling activities.
Accessibility issues may prevent installation of the OB-10 well in a location suitable to monitor effects of
the nearby sodium permanganate injection. The monitoring well network consisting of the existing and
proposed wells will be adequate to evaluate the general effects of the injection.
Updated versions of Attachment 6 - Well Construction Details and Attachment 7 - Monitoring Plan of the
Application are also enclosed. One paper copy and a digital copy of this submittal will be provided via
Page 1 of 2

8 July 2022
Page 2 of 2
overnight delivery service. Please contact me at 704-409-3444 or [e-mail] to discuss this
further.
Regards,
Ian Martin, P.G.
Project Manager
Enclosures
cc: Dave Brown — NCDEQ DWM IHSB
Scott Boyle — Energizer
Catherine Regan - ERM

-I- - -- • I r•1 RA V MI nnn .1 n4 inr.,.. n-
•--1,- - .--1 ll RA 1.1%/1r,
0 15 30
Feet
Legend
p Saprolite Monitor Well
o Bedrock Monitor Well
® Abandoned Monitoring Well
® Observation Well
• Air Sparge Well
O Vapor Extraction Well
O Abandoned Air Sparge Well
ISCO Pilot Test Area (15 ft x 20
— Underground Fire Supression Line
Undergrdound Electrical Line
E—
(active)
Underground Sanitary Sewer Line
(active)
Unknown
Undergrdound Electrical Line
I` (inactive)
Remediation System Piping
Overhead
— — Underground
Hose
ISCO Wells
• Existing Well to be Converted (10)
0 Proposed Injection Well (16)
Anticipated Radius of ISCO
Influence (est. 15 feet)
Figure 10
Proposed ISCO Injection
Location Map
Energizer Battery - Plant II
419 Art Bryan Drive
Asheboro, Randolph County
North Carolina
Environmental Resources Management
www.erm.com ERM
Coordinate System: NAD 1983 StatePlane North Carolina FIPS 3200 Feet
Source: NCCGIA

ORAWN RV'Amand
a
OB-01 (.OB-02
OB-03 C'mw_25 MW-23
OB-04B
OB-07 OB-04A
MW-26D
MW-02
MW-18D
Performance Monitoring Locations
E
SVE-09
l j * SVE-13
O
��►_ ^
W-01 IW
AS-0209I 11
0
air
MW-251�°VE-07 A AS-10
IA i®®®
®
OB-0a4A @ M W-23
kgOB-04B
_rii i
P ® IW-10 SVE-14
OB-07 AS-04/ ��� (
0 SVE-15
I b.
Mil
AS-11
AS-12 y IW-1II
1
O ® SVE-16
OB-09
SVE-12
OB-03 OB-02
.l
hlanitar4Vell ID
Analyses to be conducted prior to injection (basellin&
and 3-months, 6-months, and 12-months post injection
("Proposed
Groundwater
Field
VOCs
1,4-Dioxane
Manganese
news wells)
Elevation
Parameters'
(EPA8260)
(EPA B260 SIM)
(EPA200.7)
MbV-02
X
X
X
X
X
MW-18D
X
X
X
X
X
MW-22
X
X
X
X
X
MW-23
X
X
X
X
X
MW-24
X
X
X
X
X
MW-25
X
X
X
X
X
MW-2&D
X
X
X
X
X
OB41
X
X
X
X
X
O B-02
X
X
X
X
X
O 8-83
X
X
X
X
X
O B-04A
X
X
X
X
X
OB-04B
X
X
X
X
:;
005'
X
X
X
X
X
OB-06*
X
X
X
X
:;
0E-07*
X
X
X
X
X
0 -08*
X
X
X
X
X
OB-09*
X
X
X
X
X
08-10`
X
X
X
X
X
- Ftetd parameters include electrical' conductivity. temperature, pH.. conductivity. temperature
dissolved oxygen.. and redox potential'.
MW=01—VC04-
VE 03 ® X ®
IP
SVE-01
L!Ol D 1 V102
O
MW-22
u
OB-10
(pending
access)
■
{ 0
L 15 30
Feet
Legend
O Saprolite Monitor Well
Q Bedrock Monitor Well
X Abandoned Monitoring Well
Observation Well
Air Sparge Well
Vapor Extraction Well
Abandoned Air Sparge Well
— Underground Fire Supression Line
_ Undergrdound Electrical Line
(active)
Underground Sanitary Sewer Line
(active)
Unknown
_ Undergrdound Electrical Line
(inactive)
Proposed Wells
® Injection Well
Monitoring Well
Anticipated Radius of ISCO
Influence (est. 15 feet)
Figure 11
Proposed Monitoring Well
Location Map
Energizer Battery - Plant II
419 Art Bryan Drive
Asheboro, Randolph County
North Carolina
Environmental Resources Management
www.erm.com ERM
Coordinate System: NAD 1983 StatePlane North Carolina FIPS 3200 Feet
Source: NCCGIA

Attachment 6 — Well Construction Details
Per 15A NCAC 02C . 0225(f)(10), submit the following information in tabular or schematic form as appropriate
for each item:
(A) number and depth of injection wells;
(B) number and depth of borings if using multi -level or "nested" well systems;
(C) indication whether the injection wells are existing or proposed;
(D) depth and type of casing;
(E) depth and type of screen material;
(F) depth and type of grout;
(G) indication whether the injection wells are permanent or temporary "direct push" points; and
(H)
plans and specifications of the surface and subsurface construction details.
Proposed injection wells and their corresponding depths and screened intervals
Figure 11 depicts the locations of the proposed injection wells and observation
are provided below.
wells.
Well ID
Pneumatic
Fracturing
Interval
(feet)
Screened
Interval
(feet)
Casing
Interval
(feet)
Filter
Sand
Interval
(feet)
Bentonite
Interval
(feet)
Grout
Interval
(feet)
Surface
Completion
IW-01
IW-02
IW-03
IW-04
IW-05
IW-06
IW-07
IW-08
IW-09
IW-10
IW-11
IW-12
IW-13
IW-14
IW-15
IW-16
Proposed Permanent Injection Wells
8-40 20-40 0-20
8-40 20-40 0-20
8-40 20-40 0-20
8-40 20-40 0-20
8-40 20-40 0-20
8-40 24-44 0-24
8-40 24-44 0-24
8-40 24-44 0-24
8-40 24-44 0-24
8-40 24-44 0-24
8-40 24-44 0-24
8-40 24-44 0-24
8-40 24-44 0-24
8-40 20-40 0-20
8-40 20-40 0-20
8-40 20-40 0-20
18-40
18-40
18-40
18-40
18-40
22-44
22-44
22-44
22-44
22-44
22-44
22-44
22-44
18-40
18-40
18-40
16-18
16-18
16-18
16-18
16-18
20-22
20-22
20-22
20-22
20-22
20-22
20-22
20-22
16-18
16-18
16-18
0-16
0-16
0-16
0-16
0-16
0-20
0-20
0-20
0-20
0-20
0-20
0-20
0-20
0-16
0-16
0-16
Flush -mount,
traffic -rated
manholes set in
concrete for all
AS-O 1 D
AS-04
AS-05
AS-09
AS-10
SVE-01
SVE-07
SVE-08
SVE-14
SVE-15
Existing Permanent Injection Points
N/A 35-37.5 0-35
N/A 36-41 0-36
N/A 51-56 0-51
N/A 31-36 0-31
N/A 28-33 0-28
N/A 3-22 0-3
N/A 3-22 0-3
N/A 5-20 0-5
N/A 7-22 0-7
N/A 5-15 0-5
31.5-40
34-41
49-56
29-36
26-33
2.5-22
5-22
4-20
5-22
4-22
26.5-31.5
32-34
47-49
27-29
24-26
1-2.5
3-5
2-4
3-5
2-4
0-26.5
0-32
0-47
0-27
0-24
0-1
0-3
0-2
0-3
0-2
Flush -mount,
traffic -rated
manholes set in
concrete for all
OB-05
OB-06
OB-07
OB-08
OB-09
OB-10
Proposed Permanent Observation Wells (no injection)
N/A
N/A
N/A
N/A
N/A
N/A
20-40
20-40
20-40
20-40
20-40
20-40
0-20
0-20
0-20
0-20
0-20
0-20
18-40 16-18
18-40 16-18
18-40 16-18
18-40 16-18
18-40 16-18
18-40 16-18
0-16
0-16
0-16
0-16
0-16
0-16
Flush -mount,
traffic -rated
manholes set in
concrete for all
Notes: Lower screened depth coincides with well total depth
Groundwater Remediation Application Rev. 2-17-2020 Page 19 of 28

Pneumatic fracturing activities will be conducted within 4.5 inch diameter boreholes prior to
construction of the injection wells to be used for delivery of the sodium permanganate. Pneumatic
fracturing will not be conducted in the observation well boreholes. All proposed wells will be permanent
points. A private and public utility locate will be completed prior to intrusive field activities.
The injection well boreholes will be advanced using hollow stem auger methods with pneumatic
fracturing as described in Attachment 5. Upon completion of the pneumatic fracturing, the boreholes
will be enlarged using a hollow stem auger and converted to permanent injection wells. The observation
wells will be installed via a hollow stem auger.
All proposed wells will consist of 2-inch diameter Type II PVC wells with 0.010" slot polyvinyl
chloride (PVC) screens installed. A filter sand pack will be used to fill the annular space between the
borehole and the well to a level of two feet above the screened interval. The remainder of the annulus
will be filled with a 5% bentonite powder/ 95% cement grout mixture to the surface. A protective
manhole covers and locking well caps will be installed at each well location to complete the installation.
See Figures 10 and 11 in Appendix A for the locations of each proposed and existing injection well and
proposed observation wells.
Groundwater Remediation Application Rev. 2-17-2020 Page 20 of 28

Attachment 7 — Monitoring Plan
Per 15A NCAC 02C .0225(f)(11), submit a monitoring plan that includes the following:
(A) target contaminants plus secondary or intermediate contaminants that may result from the injection;
(B) other parameters that may serve to indicate the progress of the intended reactions;
(C) a list of existing and proposed monitoring wells to be used; and
(D) a sampling schedule to monitor the proposed injection.
Monitoring wells shall be of sufficient quantity and location to detect any movement of injection fluids, injection
process byproducts, or formation fluids outside the injection zone. The monitoring schedule shall be
consistent with the proposed injection schedule, pace of the anticipated reactions, and rate of transport of
the injectants and contaminants.
Pneumatic Fracturing Using Nitrogen Gas
Not Applicable — No monitoring required for the nitrogen injection.
Sodium Permanganate Injection
Remedial performance groundwater monitoring will be conducted to evaluate the efficacy of the remedy, to
track radius of influence of the sodium permanganate inj ectant and to track changes in the overall
contaminant mass distribution within the plume. Four additional observation wells are proposed to be
installed in the vicinity of the treatment area to supplement the monitoring well network. A total of 18
wells are proposed to be utilized for performance monitoring at a frequency of 3, 6, and 12-month
following the injection event. Baseline samples prior to the injection will be also collected. The following
table summarizes the proposed monitoring plan. Figure 11 in Appendix A presents remedial performance
monitoring well locations.
Monitor Well
ID
("Proposed
new wells)
ANALYSES
PERFORMANCE MONITORING SCHEDULE
Groundwater
Elevation
Field
Parameters'
VOCs
(EPA
8260)
1 4_
Dioxane
(EPA 8260
SIM)
Manganese
(EPA 200.7)
BASELINE 3-
MONTH
6-
MONTH
12-
MONTH
MW-02
MW-18D
MW-22
MW-23
MW-24
MW-25
MW-26D
OB-01
OB-02
OB-03
OB-04A
OB-04B
OB-05`
OB-06`
OB-07`
OB-08*
OB-09`
OB-10`
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
TOTAL
18 18
18
18
NOTES:
1 - Field parameters include electrical conductivity, temperature, pH, conductivity, temperature, dissolved oxygen, and redox potential.
2 - QA/QC - one duplicate sample per event for VOCs plus VOC trip blanks will be included for each cooler containing VOC samples.
Groundwater Remediation Application Rev. 2-17-2020
Page 21 of 28

VOCs, including chlorinated ethenes and ethanes, and 1,4-dioxane will be analyzed at each performance
sampling event and compared to baseline conditions prior to the injection event. Field parameters
(conductivity, temperature, pH, dissolved oxygen, and oxidation reduction potential) will be collected to
evaluate the dispersion of sodium permanganate. As manganese dioxide is the final byproduct of the
reaction between VOCs and sodium permanganate, manganese will be analyzed to confirm attenuation.
Groundwater Remediation Application Rev. 2-17-2020 Page 22 of 28