WS-5641_19846_CA_MRP_20230517

20231597.001A | CLT23R153742 May 17, 2023
© 2023 Kleinfelder www.kleinfelder.com
KLEINFELDER 9009 Perimeter Woods Drive | Suite E, Charlotte, NC 28216 p| 704.598.1049
May 17, 2023
Ms. April Haley
Procter and Gamble Manufacturing Company
Post Office Box 18647
Greensboro, North Carolina 27419
SUBJECT: 2023 Annual Groundwater Monitoring Report
Procter and Gamble Manufacturing Company
6200 Bryan Park Road
Browns Summit, North Carolina
Dear Ms. Haley:
Please find enclosed a copy of the Annual Groundwater Monitoring Report conducted at
monitoring well MW-2R at the Browns Summit facility. A copy of this report has been submitted
to the Guilford County Department of Environmental Health.
Kleinfelder appreciates this opportunity to provide groundwater monitoring services to Procter and
Gamble. Should questions arise or additional information be required, please contact the
undersigned or Ms. Christine Brenk at 704.378.9175.
Very truly yours,
KLEINFELDER, INC.
Thomas Sipe, PE
Senior Professional
Michael J. Burns, PG
Program Manager
TS/MJB:wma
Enclosure
WS-5641, #19846

20231597.001A | CLT23R153742 May 17, 2023
© 2023 Kleinfelder www.kleinfelder.com

© 2023 Kleinfelder All Rights Reserved

ONLY THE CLIENT OR ITS DESIGNATED REPRESENTATIVES MAY USE THIS DOCUMENT AND ONLY FOR THE SPECIFIC
PROJECT FOR WHICH THIS REPORT WAS PREPARED.

2023 ANNUAL GROUNDWATER MONITORING REPORT
PROCTER AND GAMBLE MANUFACTURING COMPANY
BROWNS SUMMIT, NORTH CAROLINA

KLEINFELDER PROJECT NO.: 20231597.001A
May 17, 2023

20231597.001A | CLT23R153742 Page iii of iii May 17, 2023
© 2023 Kleinfelder www.kleinfelder.com
TABLE OF CONTENTS
1.0 INTRODUCTION ............................................................................................................ 2
1.1 BACKGROUND .................................................................................................. 2
1.2 INCIDENT HISTORY .......................................................................................... 2
1.3 RECEPTOR INFORMATION .............................................................................. 4

2.0 FIELD ACTIVITIES ........................................................................................................ 5
2.1 SITE HYDROLOGY ............................................................................................ 5
2.2 GROUNDWATER SAMPLING AND ANALYSIS ................................................. 5

3.0 RESULTS ...................................................................................................................... 6

4.0 CONCLUSIONS ............................................................................................................. 7

5.0 LIMITATIONS ................................................................................................................ 8

TABLES
1 Monitoring Well and Groundwater Elevation Data
2 Historical Groundwater Elevation Data
3 Summary of Groundwater Sample Results

FIGURES
1 Site Location Map
2 Site Plan
3 Monitoring Well Locations
4 Potentiometric Surface Map
5 Decamethylcyclopentasiloxane Concentration Compared with Groundwater Elevation

APPENDIX
Laboratory Report

20231597.001A | CLT23R153742 Page 2 of 8 May 17, 2023
© 2023 Kleinfelder www.kleinfelder.com
2023 ANNUAL GROUNDWATER MONITORING REPORT
PROCTER AND GAMBLE MANUFACTURING COMPANY
6200 BRYAN PARK ROAD, BROWNS SUMMIT, NORTH CAROLINA
1 INTRODUCTION

1.1 BACKGROUND
Kleinfelder has completed the Annual Groundwater Monitoring Event for the Procter and Gamble
Manufacturing Company (P&G) facility located at 6200 Bryan Park Road in Browns Summit,
Guilford County, North Carolina (Figure 1 and Figure 2). The purpose of the groundwater
monitoring was to evaluate siloxane concentrations at monitoring wells surrounding a former
leaking UST.

1.2 INCIDENT HISTORY
The property is owned and operated by P&G and is used for the manufacture of personal care
products. A silicone product used in manufacturing antiperspirants was historically stored in a
portion of a segmented UST located on the west side of the facility (Figure 2). The 20,000-gallon
UST contained 10,000 gallons of capacity for the silicone fluid and 10,000 gallons of capacity for
perfume. The silicone fluid is an odorless, clear liquid containing decamethylcyclopentasiloxane
(CAS registration number 541-02-6) and mixed cyclosiloxanes (CAS registration number 69430-
24-6). The UST was filled with sand and closed in-place in August 1998.

Subsequent to the UST closure, monitoring well MW-1 was installed approximately 40 feet to the
east of the closed in-place tank. In April of 2001, Kleinfelder installed one monitoring well (MW-2)
adjacent to the UST formerly containing the silicone fluid. The base of the UST was within one
foot of the water table; therefore, soil samples were not collected. The monitoring well was
developed and groundwater samples were collected and analyzed for volatile organic compounds
(VOCs) by EPA Method 8260 and semi-volatile organic compounds (SVOCs) by EPA Method
8270 including a 10 peak library search. The laboratory identified decamethylcyclopentasiloxane,
dodecamethylcyclohexasiloxane, and octamethylcyclotetrasiloxane by the SVOC library search.
Since a North Carolina Groundwater Quality Standard (NCGQS) has not been established for
siloxanes, detectable concentrations over the laboratory detection limits [10 micrograms per liter
(µg/L)] serve as the practical groundwater standard. In January 2002, Kleinfelder installed three
additional Type II monitoring wells, MW-3, MW-4, and MW-6, and one Type III monitoring well,
MW-5D, to determine the horizontal and vertical extent of the contamination. The monitoring well

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locations are shown on Figure 3. All of the monitoring wells were sampled during the
comprehensive site assessment (CSA). The laboratory analytical results indicated that only two
of the 6 groundwater samples contained decamethylcyclopentasiloxane.
Decamethylcyclopentasiloxane was detected in monitoring well MW-1 at a concentration of 490
micrograms per liter (g/L) and in MW-2 at a concentration of 320,000 g/L.

A Corrective Action Plan (CAP) was written to address the siloxane compounds in the vicinity of
the UST. The CAP recommended Aggressive Fluid Vapor Recovery (AFVR) followed by natural
attenuation. On July 12, 2002, Kleinfelder initiated the first AFVR event at monitoring wells MW-
1 and MW-2. The radius of influence from each extraction well during the extraction event was
approximately 70 feet. The event lasted approximately eight hours and removed approximately
623 gallons of groundwater and silicone fluid. From July 12, 2002 to April 20, 2004, a total of 10
AFVR events were conducted at the site. Decamethylcyclopentasiloxane levels in MW-1
decreased from 490 μg/L to below the laboratory detection limits after the initial AFVR event.
During the same time period, decamethylcyclopentasiloxane levels in MW-2 fluctuated between
320,000 μg/L to 2,200 μg/L. The fluctuation in contaminant levels in the vicinity of the UST
indicated that contaminants in the soil were acting as a continuous source.

In June of 2004, Kleinfelder was contracted to remove the UST and surrounding soil backfill in an
attempt to remove the secondary source of decamethylcyclopentasiloxane to groundwater in the
vicinity of the UST. Monitoring well MW-2 was abandoned prior to the UST removal. Soil backfill
was excavated from the south and east sides of the UST and stockpiled for disposal. The UST
was buried approximately three feet below ground surface and was 12 feet in diameter and 24
feet in length. No holes or areas of extensive corrosion were observed. The tank was cleaned,
cut into scrap pieces, and taken to a metal recycling facility. Groundwater was observed seeping
through the concrete ballast pad at an approximate depth of 16 feet below ground surface. Soil
samples were not collected at the bottom of the excavation or sidewalls due to unstable conditions
and presence of groundwater at the bottom of the excavation. A total of 6,369 gallons of water
from the UST and 286 tons of stockpiled soil and sand were transported to a disposal facility.

Following the removal of the UST, monitoring well MW-2R was installed to a depth of 33 feet with
the screened interval from 13 to 33 feet. Monitoring well MW-1 had three sampling events with
siloxane concentrations below the laboratory detection limits. Therefore, only monitoring well

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MW-2R is typically sampled on an annual schedule. This report includes groundwater sample
analytical results for the sample collected from MW-2R on April 18, 2023.

1.3 RECEPTOR INFORMATION
Property within 1,500 feet of the source area is owned by P&G with the exception of the area to
the southwest of Bryan Park Road (Figure 1). One water supply well is located approximately 600
feet north of the source area on the P&G property; however, the well has never been used. Based
on the Division of Environmental Health Public Water Supply Section’s list of wellhead protection
areas, there are no wellhead protection areas within Guilford County.

The City of Greensboro receives its water supply from 3 surface water bodies: Lake Townsend,
Lake Brandt, and Lake Higgins. The lakes and their intakes are at least 3,000 feet from the source
area. Municipal water is available to the surrounding area.

The closest surface water feature to the source area is a manmade retention pond located
approximately 300 feet to the southwest (Figure 2). An unnamed tributary to Reedy Fork Creek
is located approximately 1,500 feet northwest of the source area. The tributary flows northeast
into Reedy Fork Creek that is dammed to form Hardy’s Mill Pond approximately 1,500 feet
northeast of the source area. Another unnamed tributary to Reedy Fork Creek is located
approximately 1,500 feet south of the source area.

The concrete paved area in the vicinity of the former UST has a trench drain that empties into the
retention pond located approximately 300 feet to the southwest (Figure 2). No other underground
utilities or structures have been identified in the source area.

Land use within 1,500 feet of the source area is primarily industrial and commercial; however, the
majority of the property is open or wooded, undeveloped land. The site and surrounding area are
zoned for industrial usage.

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2 FIELD ACTIVITIES

2.1 SITE HYDROLOGY
The depth to groundwater of the six monitoring wells at the site (MW-1, MW-2R, MW-3, MW-4,
MW-5D and MW-6) was measured on April 18, 2023. The depth to groundwater ranged from
approximately 15.05 to 20.50 feet below top of casing. Groundwater and well construction details
are summarized in Table 1. Information regarding historical groundwater elevations is
summarized in Table 2. A potentiometric surface map was prepared and is presented in Figure
4. The potentiometric surface map shows groundwater flow predominately to the southeast in the
shallow unconfined aquifer. The groundwater is flowing under an average gradient of 0.0098 feet
per foot, as measured between MW-3 to MW-2R and 0.0454 as measured between MW-4 and
MW-6.

Based on an average groundwater gradient of 0.0276 feet per foot, a calculated hydraulic
conductivity of 1.0 foot per day from the bail down tests conducted at MW-4 during the CSA, and
an assumed porosity of 40-percent, the rate of groundwater flow was estimated to be about 0.069
feet per day (25.2 feet per year).

2.2 GROUNDWATER SAMPLING AND ANALYSIS
Groundwater samples were collected from monitoring wells on April 18, 2023. The groundwater
samples were sent to Waypoint Analytical, LLC (Waypoint) and analyzed for siloxanes by EPA
Method 8270E. Prior to collecting the groundwater samples, the static water level in the
monitoring wells were recorded and the monitoring wells were purged of approximately three well
volumes of water using a new disposable bailer. After allowing the water level to recover, the
groundwater samples were collected and placed in laboratory prepared containers. The
groundwater samples were maintained on ice until delivery to Waypoint. A chain-of-custody
document was utilized throughout the collection and transportation process and is included with
the laboratory report in the Appendix.

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3 RESULTS

Decamethylcyclopentasiloxane was detected in the groundwater sample collected from MW-2R
at an estimated concentration of 30.7 g/L. Octamethylcyclotetrasiloxane was not detected in the
groundwater sample collected from MW-2R. Groundwater laboratory analytical results are
summarized in Table 3. Historical groundwater elevations were averaged and graphed to
determine the range in groundwater fluctuation and frequency across the site. In order to make a
comparison of the relative fluctuation of groundwater and contaminant concentration, contaminant
levels from monitoring well MW-2R were also graphed. Figure 5 shows the correlation between
groundwater elevation and contaminant concentration in MW-2R.

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4 CONCLUSIONS

Laboratory analytical results of groundwater samples collected from monitoring well MW-2R
indicated the presence of decamethylcyclopentasiloxane. The concentration of this constituent
detected during the April 2023 monitoring event (30.7 g/L) was higher than the estimated
concentration of 5.49 g/L during the April 2022 event and the estimated concentration of 10.8
g/L during the August 2022 event. Groundwater flow is to the southeast at an approximate rate
of about 25.20 feet per year. No sensitive receptors or groundwater users have been identified
within 1,500 feet of the release. The adjacent property in the direction of groundwater flow is more
than 1,500 feet southeast of the former UST location.

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5 LIMITATIONS

Kleinfelder offers various levels of investigative and engineering services to suit the varying needs
of different clients. It should be recognized that definition and evaluation of geologic and
environmental conditions are a difficult and inexact science. Judgments leading to conclusions
and recommendations are generally made with incomplete knowledge of the subsurface
conditions present due to the limitations of data from field studies. Although risk can never be
eliminated, more-detailed and extensive studies yield more information, which may help
understand and manage the level of risk. Since detailed study and analysis involves greater
expense, our clients participate in determining levels of service that provide adequate information
for their purposes at acceptable levels of risk.

During the course of the performance of Kleinfelder’s services, hazardous materials may have
been discovered. Kleinfelder assumes no responsibility or liability whatsoever for any claim, loss
of property value, damage, or injury that results from pre-existing hazardous materials being
encountered or present on the project site, or from the discovery of such hazardous materials.
Nothing contained in this report should be construed or interpreted as requiring Kleinfelder to
assume the status of an owner, operator, or generator, or person who arranges for disposal,
transport, storage or treatment of hazardous materials within the meaning of any governmental
statute, regulation or order. P&G is solely responsible for directing notification of all governmental
agencies, and the public at large, of the existence, release, treatment or disposal of any
hazardous materials observed at the project site, either before or during performance of
Kleinfelder’s services. P&G is responsible for directing all arrangements to lawfully store, treat,
recycle, dispose, or otherwise handle hazardous materials, including cuttings and samples
resulting from Kleinfelder’s services.

The information included on graphic representations in the Groundwater Monitoring Report has
been compiled from a variety of sources and is subject to change without notice. Kleinfelder
makes no representations or warranties, express or implied, as to accuracy, completeness,
timeliness, or rights to the use of such information. These documents are not intended for use as
a land survey product, nor are they designed or intended as a construction design document. The
use or misuse of the information contained on these graphic representations is at the sole risk of
the party using or misusing the information.

20231597.001A | CLT23R153742 May 17, 2023
© 2023 Kleinfelder www.kleinfelder.com
TABLES

WELL ID DATE
INSTALLED
SCREENED
INTERVAL
BOTTOM OF
WELL
(ft TOC)
TOP OF
CASING
ELEVATION
(ft TBM)
DEPTH TO
WATER
(ft TOC)
GROUNDWATER
ELEVATION
(ft TBM)
MW-1 12/08/98 14 - 29 30.00 100.00 20.50 79.50
MW-2R 06/25/04 13 - 33 33.00 96.41 17.35 79.06
MW-3 12/18/01 15 - 25 24.69 95.95 16.40 79.55
MW-4 12/18/01 15 - 25 24.00 96.28 15.05 81.23
MW-5D 12/19/01 53 - 58 57.35 96.68 17.20 79.48
MW-6 12/20/01 15 - 25 23.31 94.98 16.93 78.05
NOTES:
Groundwater Levels Measured on April 18, 2023
Temporary benchmark for elevation measurements is MW-1 at an assumed elevation of 100.00 feet
ft bgs = feet below ground surface
ft TOC = feet below top of well casing
ft TBM = feet below temporary benchmark
TABLE 1: MONITORING WELL AND GROUNDWATER ELEVATION DATA
20231597.001A
Copyright 2023 Kleinfelder 5/16/2023
MW-1 MW-2R MW-3 MW-4 MW-5D MW-6
04/29/02 79.08 78.89 79.35 78.97 79.22 79.24
07/12/02 78.74 78.90 78.97 80.19 78.87 77.38
08/26/02 79.26 79.40 79.39 79.24 79.03 77.63
10/07/02 79.44 79.57 79.62 81.11 79.52 78.12
11/08/02 80.45 80.67 80.68 82.11 80.57 79.09
01/20/03 80.51 80.70 79.93 81.87 80.69 79.00
03/27/03 81.25 81.46 81.44 82.59 81.33 79.77
06/05/03 81.24 81.45 81.44 82.58 81.28 78.70
07/24/03 81.23 81.50 81.46 82.49 81.27 80.50
09/26/03 80.94 81.24 80.86 80.90 81.02 79.42
04/20/04 79.84 80.04 79.97 81.26 80.06 78.35
11/16/04 79.46 79.54 79.76 81.01 79.70 78.13
11/15/05 78.61 78.58 78.86 79.97 78.64 77.14
01/26/06 79.92 80.03 80.19 79.73 80.08 80.07
04/17/06 79.57 79.63 79.33 79.36 79.65 79.66
04/17/07 79.99 80.02 80.15 81.60 80.16 78.70
04/01/08 79.06 79.07 79.34 80.65 79.74 77.72
04/09/09 79.71 79.78 79.95 81.15 79.74 78.23
06/08/10 79.42 79.64 79.74 80.85 79.6 77.93
04/18/11 79.05 79.19 79.32 80.97 79.57 77.74
04/04/12 79.27 79.09 79.75 81.30 79.64 78.19
04/15/13 79.25 78.84 79.54 81.07 79.75 77.84
04/08/14 79.78 79.36 80.00 81.63 79.80 78.39
04/22/15 81.08 81.66 82.05 82.84 81.13 80.44
04/29/16 79.15 78.71 79.30 80.88 79.38 77.68
04/25/17 78.93 78.38 78.98 80.90 79.19 77.74
04/19/18 79.57 79.16 79.62 81.27 79.64 78.17
04/26/19 79.96 79.45 79.48 81.27 79.76 79.42
04/22/20 79.60 79.20 79.84 81.32 79.93 78.15
04/23/21 79.87 79.41 80.10 81.56 80.27 78.38
04/11/22 79.57 79.16 80.10 81.29 79.98 78.08
08/02/22 78.83 78.33 80.04 80.53 79.10 77.48
04/18/23 79.50 79.06 79.55 81.23 79.48 78.05
NOTE:
ft TBM = feet below temporary benchmark
GROUNDWATER ELEVATION
(ft TBM)DATE
Temporary benchmark for elevation measurements is MW-1 at an assumed elevation of 100.00 feet
MW-2 was removed during the UST removal process. MW-2R was installed in the vicinity of the removed UST
on June 25, 2004
TABLE 2: HISTORICAL GROUNDWATER ELEVATION DATA
20231597.001A
Copyright 2023 Kleinfelder 5/16/2023
ANALYTICAL METHOD 8270 (Siloxanes only)
Contaminant of Concern
WELL ID DATE COLLECTED
11/14/01 490 < 40
06/11/02 < 10 < 10
07/25/02 < 10 < 10
11/16/04 < 10 < 10
04/22/20 < 10 < 50
08/02/22 < 5.20 < 25.9
MW-2 11/14/01 320,000 < 20,000
06/11/02 150,000 < 10,000
07/25/02 140,000 < 5,000
09/03/02 62,000 < 4,000
10/14/02 4,300 < 1,000
11/18/02 7,800 < 1,000
02/05/03 59,000 < 1,000
04/08/03 36,000 < 2,000
06/05/03 2,200 < 2000
08/01/03 8,000 < 2,000
10/06/03 49,000 < 4000
04/26/04 101,000 1,340
06/25/04 1,210 < 50
11/16/04 2,310 < 200
11/15/05 < 10 < 10
01/26/06 64 35.9
04/17/06 448 < 40
04/17/07 159 < 20
04/01/08 40.7 <5.1
04/09/09 160 15.3
06/08/10 184 13.5
04/18/11 176 < 27.4
04/04/12 1,170 < 52.6
04/15/13 160 3.3
04/08/14 540 11 A
04/22/15 650 16
04/29/16 44 < 10
04/25/17 250 E < 10
04/19/18 220 5.3 J
04/26/19 190 < 51
04/22/20 65 < 50
04/23/21 40.8 <25.3
04/11/22 5.49 J <25.5
08/02/22 10.8 <25.0
04/18/23 30.7 N.D.
12/28/01 < 10 < 10
04/22/20 < 10 < 50
08/02/22 < 5.00 < 25.0
12/28/01 < 10 < 10
04/22/20 < 10 < 50
08/02/22 < 5.00 < 25.0
01/02/02 < 10 < 10
04/22/20 < 10 < 50
08/02/22 < 5.20 < 26.1
12/28/01 < 10 < 10
04/22/20 < 10 < 50
08/02/22 < 5.00 < 25.0
NOTES:
E = Estimated concentration above calibration range
J = Estimated concentration below the Reporting Limit
2L Groundwater Standards have not been established for the compounds detected
μg/L = micrograms per liter
A = Analyte reported with possible low bias. Laboratory control sample recovery below the quality control limit.
N.D. = Non-Detect
MW-6
Decamethylcyclopentasiloxane
(μg/L)
Octamethylcyclotetrasiloxane
(μg/L)
TABLE 3: SUMMARY OF GROUNDWATER SAMPLE RESULTS
MW-5D
MW-1
MW-3
MW-4
MW-2R
20231597.001A
Copyright 2023 Kleinfelder 5/16/2023

20231597.001A | CLT23R153742 May 17, 2023
© 2023 Kleinfelder www.kleinfelder.com
FIGURES

DATE: 05-16-2023
PROJECT NO: 20231597.001A
SCALE: 1" = 2,000'
APPROVED BY:
SOURCE: USGS 7.5' TOPOGRAPHIC MAP,
BROWNS SUMMIT QUADRANGLE
Procter & Gamble Manufacturing Co.
6200 Bryan Park Road
Browns Summit, North Carolina
FIGURE 1
SITE LOCATION MAP
x
3500 Gateway Centre Blvd., Suite 200
Morrisville, NC 27560
Phone: [phone]
www.kleinfelder.com
SITE
CA
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SUMMIT AVENUEThe information included on this graphic representation has been compiled from a variety of
sources and is subject to change without notice. Kleinfelder makes no representations orwarranties, express or implied, as to accuracy, completeness, timeliness, or rights to the use ofsuch information. This document is not intended for use of a land survey product nor is itdesigned or intended as a construction design document. The use or misuse of the information
contained on this graphic representation is at the sole risk of the party using or misusing the
information.
DATE: 05-16-2023
PROJECT NO: 20231597.001A
SCALE: 1" = 400'
APPROVED BY:
DRAWN BY: TS/NL
Procter & Gamble Manufacturing Co.
6200 Bryan Park Road
Browns Summit, North Carolina
FIGURE 2
SITE PLAN
3500 Gateway Centre Blvd., Suite 200
Morrisville, NC 27560
Phone: [phone]
www.kleinfelder.com
CAD FILE: \\kleinfelder.com\shares\CHARLOTTE-DATA\WORKING\ENVIRO\Client Proposal and Project Files\Procter & Gamble - Browns Summit\Projects\2023 Support\Groundwater Sampling\Figures\Individual Figures and CAD\ LAYOUT: FIGURE 2
MONITORING WELL LOCATION
LEGEND
MW-1
The information included on this graphic representation has been compiled from a variety of
sources and is subject to change without notice. Kleinfelder makes no representations or
warranties, express or implied, as to accuracy, completeness, timeliness, or rights to the use of
such information. This document is not intended for use of a land survey product nor is itdesigned or intended as a construction design document. The use or misuse of the informationcontained on this graphic representation is at the sole risk of the party using or misusing theinformation.
0 20 40 80
GRAPHIC SCALE
x
TR
A
C
K

C
TR
A
C
K

A
MW-4
MW-1
MW-5D
MW-6
MW-3
TR
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H

D
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TANK FARM
MW-2R
CATCH
BASIN
FORMER
PERFUME UST
FORMER SILICONE/
PERFUME UST
SHED
SILO
SILO
DATE: 05-16-2023
PROJECT NO: 20231597.001A
SCALE: 1" = 40'
APPROVED BY:
Procter & Gamble Manufacturing Co.
6200 Bryan Park Road
Browns Summit, North Carolina
FIGURE 3
MONITORING WELL LOCATIONS
DRAWN BY: TS/NL
3500 Gateway Centre Blvd., Suite 200
Morrisville, NC 27560
Phone: [phone]
www.kleinfelder.com
CA
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MONITORING WELL LOCATION WITH
GROUNDWATER ELEVATION
GROUNDWATER CONTOUR LINE
LEGEND
MW-1
(79.50)
80.0
GROUNDWATER ELEVATIONS WERE MEASURED AUGUST 2, 2022.
MONITORING WELL MW-5D IS SCREENED BELOW THE WATER
TABLE AND WAS NOT USED TO GENERATE GROUNDWATER
CONTOUR LINES.
The information included on this graphic representation has been compiled from a variety ofsources and is subject to change without notice. Kleinfelder makes no representations orwarranties, express or implied, as to accuracy, completeness, timeliness, or rights to the use ofsuch information. This document is not intended for use of a land survey product nor is it
designed or intended as a construction design document. The use or misuse of the information
contained on this graphic representation is at the sole risk of the party using or misusing the
information.
0 20 40 80
GRAPHIC SCALE
x
TR
A
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K

C
TR
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K

A
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D
R
A
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TANK FARMCATCH
BASIN
FORMER
PERFUME UST
FORMER SILICONE/
PERFUME UST
DIRECTION OF GROUNDWATER FLOW79.5
SHED
SILO
SILO
MW-1
(79.50)
MW-6
(78.05)
MW-4
MW-2R
(79.06)
MW-3
(79.55)
MW-5D
(79.48)
(81.23)
79.5
80.0
79.
0
78.5
80.5
81.0
DATE: 05-16-2023
PROJECT NO: 20231597.001A
SCALE: 1" = 40'
APPROVED BY:
Procter & Gamble Manufacturing Co.
6200 Bryan Park Road
Browns Summit, North Carolina
FIGURE 4
POTENTIOMETRIC SURFACE MAP
DRAWN BY: TS/NL
3500 Gateway Centre Blvd., Suite 200
Morrisville, NC 27560
Phone: [phone]
www.kleinfelder.com
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77
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1
10
100
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Nov-01 May-03 Nov-04 May-06 Nov-07 May-09 Nov-10 May-12 Nov-13 May-15 Nov-16 May-18 Nov-19 May-21 Nov-22
Gr
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Date
Figure 5: Decamethylcyclopentasiloxane Concentration
Compared with Groundwater Elevation
MW-2 DMCPS Concentration Average Groundwater Elevation
Note:
DMCPS = Decamethylcyclopentasiloxane

20231597.001A | CLT23R153742 May 17, 2023
© 2023 Kleinfelder www.kleinfelder.com
APPENDIX A
LABORATORY REPORT

Laboratory's liability in any claim relating to analyses performed shall be limited to, at laboratory's option, repeating the
analysis in question at laboratory's expense, or the refund of the charges paid for performance of said analysis.

5/12/2023
Kleinfelder SE, Inc. (Charlotte) Thomas Sipe
9009 Perimeter Woods Drive Suite E Charlotte, NC, 28216
Ref: Analytical Testing
Revised Lab Report Number: 23-109-9008 (Original Report 23-109-0008) Client Project Description: P&G (Siloxanes)
Dear Thomas Sipe:
Waypoint Analytical, LLC (Charlotte) received sample(s) on 4/19/2023 for the analyses presented in the
following report.
The above referenced project has been analyzed per your instructions. The analyses were performed in accordance with the applicable analytical method.
The analytical data has been validated using standard quality control measures performed as required by the
analytical method. Quality Assurance, method validations, instrumentation maintenance and calibration for all parameters were performed in accordance with guidelines established by the USEPA (including 40 CFR 136
Method Update Rule May 2021) unless otherwise indicated. Certain parameters (chlorine, pH, dissolved oxygen, sulfite...) are required to be analyzed within 15 minutes of sampling. Usually, but not always, any field parameter analyzed at the laboratory is outside of this holding time.
Refer to sample analysis time for confirmation of holding time compliance.
The results are shown on the attached Report of Analysis(s). Results for solid matrices are reported on an as-received basis unless otherwise indicated. This report shall not be reproduced except in full and relates only to
the samples included in this report. Please do not hesitate to contact me or client services if you have any questions or need additional information. Sincerely,
Terri W Cole Laboratory Project Manager
Page 1 of 7
Certification Summary
Laboratory ID: WP CNC: Waypoint Analytical Carolina, Inc. (C), Charlotte, NC
State Program Lab ID Expiration Date
07/31/202337735State ProgramNorth Carolina
12/31/2023402State ProgramNorth Carolina
07/31/202399012State ProgramSouth Carolina
12/31/202299012State ProgramSouth Carolina
Page 1 of 1 00016/23-109-9008
Page 2 of 7
Report Number:
Sample Summary Table
Client Project Description:
23-109-9008
P&G (Siloxanes)
Lab No Client Sample ID Matrix Date Collected Date Received
04/18/2023 10:40Aqueous 94292 MW-2R 04/19/2023 13:23
Page 3 of 7

Client: Kleinfelder SE, Inc. (Charlotte) CASE NARRATIVE
Project: P&G (Siloxanes) Lab Report Number: 23-109-9008
Date: 5/12/2023
This is a revised report and supersedes the original laboratory report dated 5/11/23. The reporting units have
been corrected.
Page 4 of 7
Sample ID Report Lab NoLRB-V32379 23-109-0008 LRB
Paramater Result Units
Dilution
Factor Method Analysis Date/Time Analyst Batch ID
Hexadecanoic Acid 21.9 ug/L 1 8270 4/26/2023 10:34 APANN V32490
Sample ID Report Lab No
MW-2R 23-109-0008 94292
Paramater Result Units
Dilution
Factor Method Analysis Date/Time Analyst Batch ID
Decamethylcyclopentasilox
ane 30.7 ug/L 1 8270 4/26/2023 15:35 APANN V32490Octamethylcyclotetrasiloxa
ne N.D. ug/L 1 8270 4/26/2023 15:35 APANN V32490
Page 5 of 7
Fed Ex
UPS
US Postal
Client
Lab
Courier
Other :
Shipment Receipt Form
Customer Number:
Customer Name:
Report Number:23-109-0008
Kleinfelder SE, Inc. (Charlotte)
01122
Shipping Method
Shipping container/cooler uncompromised?
Thermometer ID:IRT15 3.7C
Chain of Custody (COC) present?Yes No
Yes No Not Present
Yes No Not Present
Yes No
COC agrees with sample label(s)? Yes No
COC properly completed
Samples in proper containers?
Sample containers intact?
Sufficient sample volume for indicated test(s)?
All samples received within holding time?
Cooler temperature in compliance?
Yes No
Yes No
Yes No
Yes No
Yes No
Yes NoCooler/Samples arrived at the laboratory on ice.
Samples were considered acceptable as cooling
process had begun.
Yes No
Yes No N/A
Yes No N/A
Yes No N/ASoil VOA method 5035 – compliance criteria met
Water - Sample containers properly preserved
Water - VOA vials free of headspace Yes No N/A
Trip Blanks received with VOAs
Low concentration EnCore samplers (48 hr)
High concentration pre-weighed (methanol -14 d) Low conc pre-weighed vials (Sod Bis -14 d)
High concentration container (48 hr)
Custody seals intact on shipping container/cooler?
Custody seals intact on sample bottles?
Number of coolers/boxes received
Yes No
1
Signature:Angelo Norvell Date & Time:04/19/2023 15:18:32
Special precautions or instructions included?
Comments:
Page 6 of 7
Page 7 of 7