WI-1557_18374_CA_MRP_20200323

MONITORING REPORT
Former Potter Oil Company (Incident #18374)
309 East Cavenaugh Street
Wallace, Duplin County, North Carolina
March 23, 2020
Terracon Project No. 72159665A

Prepared for:
North Carolina Department of Environmental Quality
Division of Waste Management
Raleigh, North Carolina

Prepared by:
Terracon Consultants, Inc.
Winterville, North Carolina

Terracon Consultants, Inc. 314 Beacon Drive Winterville, NC 28590
P 252-353-1600 F 252-353-0002 terracon.com
March 23, 2020

Mr. Scott Ryals
North Carolina Department of Environmental Quality
Division of Waste Management
1646 Mail Service Center
Raleigh, North Carolina 27699-1646
Email: [e-mail]

Subject: Monitoring Report
Former Potter Oil Company
309 East Cavenaugh Street
Wallace, Duplin County, North Carolina
UST Incident Number: 18374
Terracon Project No. 72159665A

Dear Mr. Ryals:

Terracon Consultants, Inc. (Terracon) is pleased to submit this Monitoring Report for the above referenced
property. This report has been prepared in general accordance with North Carolina Department of
Environmental Quality (NCDEQ), UST Section Guidelines for Assessment and Corrective Action for UST
Releases and Task Authorization No. 04, approved on February 7, 2020.

If you have any questions regarding this report or the assessment activities, please contact us at 252-353-
1600.

Sincerely,
Terracon Consultants, Inc.

Allen McColl Carl F. Bonner, PE
Project Scientist Office Manager / Principal
Environmental Services

George K. Flores, PE
Senior Engineer

Enclosures

Table of Contents
A. SITE INFORMATION ............................................................................................................................ 1
B. EXECUTIVE SUMMARY ...................................................................................................................... 2
C. SITE HISTORY AND CHARACTERIZATION ...................................................................................... 4
C.1 Site Setting ..................................................................................................................................... 4
C.2 Release Summary .......................................................................................................................... 4
C.3 Previous Investigations ................................................................................................................. 5
C.4 Water Supply Wells ........................................................................................................................ 6
C.5 Surface Water ................................................................................................................................. 6
C.6 Land Use Information .................................................................................................................... 6
D. ASSESSMENT INFORMATION ....................................................................................................... 6
D.1 Site Geology and Hydrogeology ..................................................................................................... 6
D.2 Sampling Activities ........................................................................................................................ 7
D.2.1 Free Product Evaluation ................................................................................................................ 8
D.2.2 Groundwater Sampling Activities .................................................................................................. 8
D.2.3 Analytical Results .......................................................................................................................... 8
E. CONCLUSIONS AND RECOMMENDATIONS .............................................................................. 10
FIGURES
Exhibit 1: Topographic Vicinity Map
Exhibit 2: Site Diagram
Exhibit 3: Monitoring Well Location Map
Exhibit 4: Groundwater Elevation Map
Exhibit 5: Groundwater Analytical Results
Exhibit 6: Benzene Concentration Map

TABLES
Table 1: Summary of Groundwater Analytical Results
Table 2: Monitoring Well Construction Details and Groundwater Elevations

APPENDIX
Appendix A: Laboratory Analytical Results and Chain of Custody Forms
Appendix B: Field Notes
Former Potter Oil Company
Wallace, North Carolina
Terracon Project No. 72159665A
Incident No. 18374
March 23, 2020

Responsive ■ Resourceful ■ Reliable 1

MONITORING REPORT
A. SITE INFORMATION
Date of Report: March 23, 2020
NCDEQ Incident No: 18374
Facility ID: 0-015366 & 0-015368
Site Name: Former Potter Oil Company
Site Location: 309 East Cavenaugh Street
Wallace, North Carolina 28466
Latitude: N 34.739596
Longitude: W -77.994178
UST Owner/Operator: Potter Oil Company of Wallace, Inc.
PO Box 188
Wallace, NC 28466

Current Property Owner: Unknown, information not currently provided on Duplin County GIS
website.

Current Property
Occupant: Two unoccupied commercial buildings.

Consultant: Terracon Consultants, Inc. (Contact: Allen McColl)
314 Beacon Drive
Winterville, North Carolina 28590
[phone]

Laboratory: Pace Analytical (NCDEQ No. 5342)
9800 Kincey Avenue
Huntersville, North Carolina 28028
704-875-9092

Release Information: Release Date: February 1998
Estimated Quantity: Unknown
Cause of Release: Underground Storage Tank System
Currently Active Tanks: None

Former Potter Oil Company
Wallace, North Carolina
Terracon Project No. 72159665A
Incident No. 18374
March 23, 2020

Responsive ■ Resourceful ■ Reliable 2
I, Carl F. Bonner, a Professional Engineer for Terracon Consultants, Inc., do certify that the information
contained in this report is correct and accurate to the best of my knowledge.

Carl F. Bonner, PE
NC Registration No. 16252

Terracon Consultants, Inc. is licensed to practice geology/engineering in North Carolina. The certification
numbers of the corporation are C-367 and F-0869, respectively.
B. EXECUTIVE SUMMARY
The purpose of this report is to present the current status of groundwater quality at the Former Potter Oil
Company site (Incident No. 18374) that is located at 309 East Cavenaugh Street (Intersection of East
Cavenaugh Street and North Norwood Street) in Wallace, Duplin County, North Carolina (Exhibit 1).
Terracon completed this report to summarize the findings of assessment activities performed at the site on
February 10, 2020.

A release was discovered at the site in February 1998 during a subsurface investigation which was
performed prior to the closure of the UST systems. Twelve underground storage tanks (USTs) were
removed from the site in June 1998. Several rounds of assessment and remediation have been performed
at the site which has included the limited removal of contaminated soil and the installation of a groundwater
monitoring well network. Prior assessment results revealed concentrations of petroleum compounds in soil
above their respective soil-to-groundwater Maximum Soil Contaminant Concentrations (MSCCs) and in
groundwater above the applicable 15A NCAC 2L Standard (2L Standard). Free product was reportedly
observed infiltrating one of the tank pits during the tank closure and has historically been infrequently
documented in site monitoring wells. Free product has not been noted in the monitoring wells associated
with this incident since 2008. Several monitoring wells have historically had exceedances of benzene
above NCDEQ’s 5,000 micrograms per liter (µg/L) Gross Contamination Level (GCL) for this compound.
However, only one monitoring well (referred to as MW-9 or its replacement well MW-9R) has exceeded
GCLs since 2013.

A mobile multi-phase extraction (MMPE) was performed on wells MW-9R and MW-10 in December 2019.

Terracon mobilized to the site on February 10, 2020 to collect groundwater samples from groundwater
monitoring well MW-9R and the nine closest shallow aquifer monitoring wells to MW-9R (MW-2R, MW-4,
MW-5, MW-6, MW-8, MW-10, MW-19, MW-23 and MW-24).

During the February 2020 site visit, it was noted that a portion of the site is currently operating as a topsoil
and gravel sales lot. No one was at the site at the time of the February 2020 site visit. Monitoring well MW-
8 could not be located during this site visit and appears to have been covered by staged topsoil.

Former Potter Oil Company
Wallace, North Carolina
Terracon Project No. 72159665A
Incident No. 18374
March 23, 2020

Responsive ■ Resourceful ■ Reliable 3
With the exception of monitoring well MW-8, Terracon located the other nine groundwater monitoring wells
scheduled for sampling.

The wells were gauged, purged and a groundwater sample was collected from each well in general
accordance with NCDEQ’s guidelines. The groundwater samples were submitted for laboratory analysis
of volatile organic compounds (VOCs) by EPA Standard Method 6200B with methyl-tert-butyl ether (MTBE),
ethylene dibromide (EDB), and isopropyl ether (IPE). Free product was not observed in the monitoring
wells.

Based on information obtained during the completion of the Monitoring Report activities performed in
February 2020, Terracon provides the following conclusions and findings:

Free product was not observed in monitoring wells sampled.
GCL exceedances were not analyzed in groundwater samples collected from the subject monitoring
wells.
When compared to the May 2019 dataset, dissolved hydrocarbon concentrations generally decreased
or stayed somewhat similar in the wells with documented historical impacts.
The groundwater samples collected from monitoring wells MW-5, MW-6, MW-23 and MW-24 were
analyzed to be below the 2L Standards for the target constituents.
Monitoring well MW-10 has historically been located in the locked gated backyard of an offsite residential
adjoining property. Access to MW-10 was granted by the property owner during this sampling event and
MW-10 was sampled for the first time since 2015. The contamination in the groundwater in the area of
MW-10 has decreased significantly since 2015.
The extent of groundwater impact is reasonably defined by the existing monitoring well network.
The general groundwater flow direction appears to be towards the south.
Previous receptor surveys have noted a municipal water supply well (Well # 1) at an elevated water
tower located approximately 800 feet southeast of the center of the site. This municipal well was
reportedly abandoned recently as of 2019. Private water supply wells were not identified during previous
receptor surveys to be within 1,000 feet of the site. Municipal water is available and used at developed
properties within 1,000 feet of the site.
Based on the Interstate Technology and Regulatory Council (ITRC) Petroleum Vapor Intrusion (PVI)
guidance, additional evaluation of the PVI pathway for the residence on the southeastern adjacent
property is warranted. ITRC has established a vertical screening distance of 5 feet below land surface
(bls) for sites with dissolved concentrations indicating the presence of residual light non-aqueous phase
liquid (LNAPL). The observed groundwater concentration data in MW-2R, MW-9R and MW-10 is
indicative of residual LNAPL per the ITRC guidance. Groundwater was observed in the closest adjacent
well to this structure (MW-2R) at a depth of approximately 1 foot bls and has historically been measured
in this well at a depth between approximately 1 foot bls and 4 feet bls.

Former Potter Oil Company
Wallace, North Carolina
Terracon Project No. 72159665A
Incident No. 18374
March 23, 2020

Responsive ■ Resourceful ■ Reliable 4
C. SITE HISTORY AND CHARACTERIZATION
The purpose of this report is to present the current status of the groundwater quality and summarize the
findings of assessment activities performed on February 10, 2020 at the Former Potter Oil Company located
at 309 East Cavenaugh Street (Intersection of East Cavenaugh Street and North Norwood Street) in
Wallace, Duplin County, North Carolina (Figure 1). This Monitoring Report was prepared for the site in
response to a request by the Incident Manager, Mr. Scott Ryals with the NCDEQ Division of Waste
Management, State Lead Program.

The Monitoring Report was prepared in general accordance with the 15A NCAC 2L .0115 regulations and
the NCDEQ Underground Storage Tank (UST) Section Guidelines for Assessment and Corrective Action
for UST Releases, under the supervision of Mr. Carl F. Bonner, a North Carolina registered Professional
Engineer (NC Registration No. 16252).

C.1 Site Setting
The site is comprised of 0.69 acres of commercial property. The property contains an approximate 1,750
square foot commercial building that is currently occupied by Trilok Enterprise LLC Used Car Auto Sales
and an approximately 1,450 square foot commercial building that is currently occupied by Chic Boutique.
In addition, a portion of the northeastern side of the site is currently being utilized as a gravel/topsoil sales
lot. The site had previously been unoccupied for the past few years. Although the site appears to be
operating as the above-mentioned commercial businesses, no one appeared to be on the site during our
site visit on February 10, 2020. The site is further improved with asphalt drives/parking areas and is
depicted in Exhibit 2.

The adjacent property to the north consists of a church and a parsonage; to the east is a residence; to the
south is East Cavenaugh Street with a residence and currently undeveloped field with a small shed across
the road; to the southwest is the intersection of East Cavenaugh Street and North Norwood Street with a
Farm Bureau across the intersection; to the west is North Norwood Street with a church, Liberty Tax and
BB&T Bank across the road.

Based on our review of previous environmental reports, the grassed field and shed on the southern
adjoining property across East Cavenaugh Street was formerly the site of a gas station operated by
Southern Distributing Company. Several groundwater monitoring wells were observed on this southern
adjoining property that do not appear to be associated with the subject site’s monitoring well network.

C.2 Release Summary
A release (Incident Number 18374) was discovered at the site in February 1998 during a subsurface
investigation which was performed at the site prior to the closure of the UST system. Twelve USTs were
reportedly removed from the site in June 1998.

Additional discussions of the UST removal and subsequent assessment activities at the site are presented
in the following section of the report. A more thorough summary of the prior investigations that have
occurred on the site are presented in Terracon’s Monitoring Report, dated May 2, 2016, that is on file at the
NCDEQ State Lead Program in Raleigh, NC.
Former Potter Oil Company
Wallace, North Carolina
Terracon Project No. 72159665A
Incident No. 18374
March 23, 2020

Responsive ■ Resourceful ■ Reliable 5
C.3 Previous Investigations
Based on review of past reports, Terracon understands that soil and groundwater contamination was
discovered at the site in February 1998. We further understand that twelve USTs have historically been
associated with the subject facility under two separate Facility ID Numbers (0-015366 & 0-015368). The
twelve USTs were reportedly removed from the site in June 1998.

To date, contaminated soil removal; groundwater monitoring well installations; soil sampling; groundwater
sampling events; free product evaluations and a MMPE has been performed.

Multiple groundwater sampling events have occurred since at least 1999. Historical groundwater analysis
has indicated that groundwater is impacted by petroleum hydrocarbons at concentrations above the
applicable 2L Standards in multiple monitoring wells located on the site and in monitoring wells that have
been installed offsite. Monitoring wells MW-7, MW-13, MW-14, MW-15, MW-17, MW-20, MW-21 and DW-
1 did not contain target analytes above the 2L Standards for four consecutive sampling events (performed
from 2008 to 2015) so the decision was made to discontinue sampling these wells are part of the ongoing
monitoring program.

Monitoring wells MW-2/MW-2R, MW-5, MW-9/MW-9R, MW-10 and MW-19 have historically contained the
highest levels of groundwater contamination with historic levels of benzene above the GCL. Though
dissolved concentrations have fluctuated, there does not appear to be an overall trend.

Free product has historically been identified in MW-2, MW-6, MW-10 although it has not been observed in
wells MW-2R, MW-6 or MW-10 during the four monitoring events performed from 2008 through 2016.
Approximately 3.56 feet of free product was also reportedly measured in MW-18 during the 2013 monitoring
event; however, it appears as if this measurement (listed in the April 2013 report table) was in error. MW-
18 was sampled during the 2013 event and the results were recorded as “Not Detected” for all target
analytes. No mention of free product was observed in the text of the 2013 report.

Terracon became involved with this incident in 2015 through our contract with NCDEQ’s State Lead
program. To date, Terracon has conducted multiple groundwater sampling events; installed replacement
and new groundwater monitoring wells; and installed oxygen releasing well booms in MW-9R.

Since our involvement with the site in 2015, free product has not been noted in the monitoring well network.
Except for MW-9R, benzene has not been analyzed to be above GCL; monitoring well MW-9R was
analyzed to contain benzene above GCL in May 2015 and again during the May 2019 event. Several other
site monitoring wells have had exceedances of target contaminants above the 2L Standard.

A mobile multi-phase extraction (MMPE) was performed on wells MW-9R and MW-10 in December 2019.

Additional activities are not known to have occurred at the site after the issuance of the February 4, 2020
MMPE report until the current groundwater assessment activities discussed in this report.

Former Potter Oil Company
Wallace, North Carolina
Terracon Project No. 72159665A
Incident No. 18374
March 23, 2020

Responsive ■ Resourceful ■ Reliable 6
C.4 Water Supply Wells
Terracon was not requested to perform a receptor survey as part of this scope of work. Previous receptor
surveys performed by others have noted a municipal water supply well (Well # 1) at an elevated water tower
located approximately 800 feet southeast of the source area (i.e., the former UST basin). This municipal
well was reportedly abandoned recently as of 2019. Private water supply wells were not identified during
previous receptor surveys within 1,000 feet of the source area. Municipal water is reportedly available and
used at developed properties within 1,000 feet of the source area.

C.5 Surface Water
Surface water bodies were not observed on the site. According to the Wallace, NC Quadrangle USGS
topographic map, the closest surface water is Little Rockfish Creek and Boney Mill Pond located
approximately 3,200 feet east of the source area. Surface waters in the site area are depicted on Exhibit
1.

C.6 Land Use Information
The adjacent property to the north consists of a church and a parsonage; property to the east is occupied
by a residence; to the south is East Cavenaugh Street with a residence and currently undeveloped field
with a small shed across the road; to the southwest is the intersection of East Cavenaugh Street and North
Norwood Street with Farm Bureau across the intersection; to the west is North Norwood Street with a
church, Liberty Tax and BB&T Bank across the road.

Based on our review of previous environmental reports, the grassed field and shed on the southern
adjoining property that is across East Cavenaugh Street was formerly the site of a gas station operated by
Southern Distributing Company. Several groundwater monitoring wells were observed on this southern
adjoining property that do not appear to be associated with the subject site’s monitoring well network.
D. ASSESSMENT INFORMATION
D.1 Site Geology and Hydrogeology
The following resources were reviewed to evaluate site-specific geological and hydrogeological
characteristics:

Wallace Quadrangle, North Carolina, USGS 7.5-minute series topographic map, dated 1987 (Exhibit
1).
Geologic Map of North Carolina, dated 1985.
The Geology of the Carolinas, Carolina Geological Society Fiftieth Anniversary Volume, edited by J.
Wright Horton, Jr., and Victor A. Zullo, The University of Tennessee Press, dated 1991.
Soil Survey of Duplin County, North Carolina, US Department of Agriculture, Natural Resources
Conservation Service, Series 1954, No.2, Issued March 1959.

Former Potter Oil Company
Wallace, North Carolina
Terracon Project No. 72159665A
Incident No. 18374
March 23, 2020

Responsive ■ Resourceful ■ Reliable 7
The site is located in the Coastal Plain Region (Inner Coastal Plain). The Inner Coastal Plain is generally
a higher, denser area of rich, sandy soil. The Coastal Plain Region was developed on loose, unconsolidated
and flat layers of sediment, caused by sea level changes and erosion of the mountains. Most parts of the
Coastal Plain Region consist of well to moderately well-drained loamy soils.

The site is underlain by a sequence of marine sediments of the Tertiary age known as the Yorktown/Duplin
Formation, Undivided (Tpy). The Yorktown Formation consists of fossiliferous clay with fine grained sand;
shell material mainly found in the lenses. The Duplin Formation is shelly, medium to fine grained sand,
sandy marl and limestone.

Information obtained from the Soil Survey for Duplin County, depicts soils on the site as Norfolk loamy fine
sand, nearly level thick surface phase (Nf). Nf soil types are an extensive well-drained soil that occur on
flat uplands; runoff is slow to very slow due to the nearly level slopes and thickness of surface soil; the
moisture capacity is moderately low and the soil is slightly droughty.

In the site area, groundwater generally is obtained from the Black Creek Aquifer. The Black Creek Aquifer
is lagoonal to marine consisting of thinly laminated clay interlayered with sand. Sediments in the subsurface
are highly organic and sediments are typically from the Black Creek and Middendorf formations. On
average, the Black Creek aquifer consists of nearly 60 percent sand. The hydraulic conductivity ranges
from 15 to 50 feet/day and averages 28 feet/day. Recharge occurs mainly by the downward percolation
from the overlying aquifers. Discharge is typically into streams where there are channels cut into it or its
overlying confining unit.

The depth to the water table is not consistent and is dependent upon several factors that include the amount
of rainfall, permeability of the soil, and the influences of groundwater pumping. Groundwater typically flows
in directions parallel to the ground surface and under the influence of gravity, migrates to discharge points
such as surface water features, the toes of slopes or natural springs.

Fluctuations in the depth of the water table can be expected depending on variations in precipitation,
surface water run-off and other factors. Normally, the highest levels of the water table occur in late winter
and spring and the lowest levels occur in the late summer and fall. Based on depth to water measurements
obtained in February 2020, the general groundwater flow direction is interpreted to be toward the south
from the site. Depth to groundwater in the gauged monitoring wells ranged from approximately 0.3 to 1.9
feet bls during the February 10, 2020 site visit.

D.2 Sampling Activities
Terracon mobilized to the site on February 10, 2020 to collect groundwater samples from monitoring well
MW-9R and the nine closest shallow aquifer monitoring wells to MW-9R (MW-2R, MW-4, MW-5, MW-6,
MW-8, MW-10, MW-19, MW-23 and MW-24).

During the February 2020 site visit, it was noted that a portion of the site is currently operating as a topsoil
and gravel sales lot. No one was at the site at the time of the February 2020 site visit. Monitoring well MW-
8 could not be located during this site visit and appears to have been covered by staged topsoil.

Former Potter Oil Company
Wallace, North Carolina
Terracon Project No. 72159665A
Incident No. 18374
March 23, 2020

Responsive ■ Resourceful ■ Reliable 8
With the exception of monitoring well MW-8, Terracon located the other nine groundwater monitoring wells
scheduled for sampling.

Sections D.2.1, D.2.3 and D.2.3 of this report contain discussions of free product evaluation, groundwater
sampling activities and analytical results of the sampling that occurred during this event.

D.2.1 Free Product Evaluation
Free product was not observed in the monitoring wells sampled on February 10, 2020.

D.2.2 Groundwater Sampling Activities

Groundwater samples were collected from MW-2R, MW-4, MW-5, MW-6, MW-9R, MW-10, MW-19, MW-
23 and MW-24 during this sampling event.

Prior to sampling, Terracon gauged the groundwater levels in the above-mentioned monitoring wells. After
each well was gauged, the wells were then purged using a dedicated disposable bailer until at least 3 well
volumes of water were purged from each well.

On February 10, 2020 at the request of DEQ, Terracon also prepared a field blank using distilled water.
The field blank sample was indicated as sample “MW-PO” on the chain-of-custody.

The approximate locations of the wells are shown on the Monitoring Well Location Map (Exhibit 3). Current
and historical groundwater elevation measurements are provided in Table 2.

The samples were collected into laboratory-supplied glassware which was then labeled and stored in an
ice-packed cooler. The samples, along with chain-of-custody documentation, were delivered to Pace
Analytical Services, Inc., in Huntersville, North Carolina for analysis of VOCs, including xylenes, MTBE,
EDB and IPE, by EPA Method 6200. The analytical results are discussed in Section D.2.3 of this report.

D.2.3 Analytical Results

GCL exceedances were not analyzed in groundwater samples collected from the subject monitoring wells.

The groundwater samples collected from monitoring wells MW-2R, MW-4, MW-9R, MW-10 and MW-19
contained at least one target petroleum constituent that exceeded the applicable 2L Standards.

Benzene detected at concentrations above the 2L Standard (1 µg/L) in wells MW-2R at 1,860 µg/L, MW-4
at 34.1 µg/L, MW-9R at 3,170 µg/L, MW-10 at 418 µg/L and MW-19 at 284 µg/L.

Ethylbenzene was detected at a concentration above the 2L Standard (600 µg/L) in well MW-2R at 819
µg/L.

MTBE was detected at concentrations above the 2L Standard (20 µg/L) in wells MW-2R at 167 µg/L and
MW-9R at 698 µg/L.

Former Potter Oil Company
Wallace, North Carolina
Terracon Project No. 72159665A
Incident No. 18374
March 23, 2020

Responsive ■ Resourceful ■ Reliable 9
Naphthalene was detected at concentrations above the 2L Standard (6 µg/L) in wells MW-2R at 1,260 µg/L,
MW-4 at 10.2 µg/L, MW-9R at 332 µg/L, MW-10 at 275 µg/L and MW-19 at 56.7 µg/L.

N-propylbenzene was detected at a concentration above the 2L Standard (70 µg/L) in well MW-2R at 83
µg/L.

1,2,4-Trimethylbenzene was detected at concentrations above the 2L Standard (400 µg/L) in wells MW-2R
at 789 µg/L and MW-10 at 938 µg/L.

Total xylenes were detected at a concentration above the 2L Standard (500 µg/L) in MW-2R at 1,747 µg/L
and MW-10 at 2,310 µg/L.

The groundwater samples collected from monitoring wells MW-5, MW-6, MW-23 and MW-24 were analyzed
to be below the 2L Standards for the target constituents.

When compared to the May 2019 dataset, dissolved hydrocarbon concentrations generally decreased or
stayed somewhat similar in the wells with documented historical impacts.

Monitoring well MW-10 has historically been located in the locked gated backyard of an offsite residential
adjoining property. Access to MW-10 was granted by the property owner during this sampling event and MW-
10 was sampled for the first time since 2015. The contamination in the groundwater in the area of MW-10 has
decreased significantly since 2015.

Based on the ITRC PVI guidance, additional evaluation of the PVI pathway for the residence on the
southeastern adjacent property is warranted. ITRC has established a vertical screening distance of 5 feet bls
for sites with dissolved concentrations indicating the presence of residual LNAPL. The observed groundwater
concentration data in MW-2R, MW-9R and MW-10 is indicative of residual LNAPL per the ITRC guidance.
Groundwater was observed in the closest adjacent well to this structure (MW-2R) at a depth of approximately
1 foot bls and has historically been measured in this well at a depth between approximately 1 foot bls and 4
feet bls.

A Groundwater Analytical Results Map is provided as Exhibit 5 that indicates contaminants detected and
their levels for each well. A concentration map for benzene is provided in Exhibit 6. As indicated on the
above figures, the estimated extent of dissolved phase impact appears reasonably defined by the existing
monitoring well network.

No target analytes were detected in the field blank (MW-PO).

The groundwater analytical results from the monitoring wells are summarized in Table 1. A copy of the
laboratory analytical report is provided in Appendix A.

Former Potter Oil Company
Wallace, North Carolina
Terracon Project No. 72159665A
Incident No. 18374
March 23, 2020

Responsive ■ Resourceful ■ Reliable 10
E. CONCLUSIONS AND RECOMMENDATIONS
Based on information obtained during the completion of the Monitoring Report activities performed in
February 2020, Terracon provides the following findings and conclusions:
Free product was not observed in monitoring wells sampled.
GCL exceedances were not analyzed in groundwater samples collected from the subject monitoring
wells.
When compared to the May 2019 dataset, dissolved hydrocarbon concentrations generally decreased
or stayed somewhat similar in the wells with documented historical impacts.
The groundwater samples collected from monitoring wells MW-5, MW-6, MW-23 and MW-24 were
analyzed to be below the 2L Standards for the target constituents.
Monitoring well MW-10 has historically been located in the locked gated backyard of an offsite residential
adjoining property. Access to MW-10 was granted by the property owner during this sampling event and
MW-10 was sampled for the first time since 2015. The contamination in the groundwater in the area of
MW-10 has decreased significantly since 2015.
The extent of groundwater impact appears reasonably defined by the existing monitoring well network.
The general groundwater flow direction appears to be towards the south.
Previous receptor surveys have noted a municipal water supply well (Well # 1) at an elevated water
tower located approximately 800 feet southeast of the center of the site. This municipal well was
reportedly abandoned recently as of 2019. Private water supply wells were not identified during previous
receptor surveys to be within 1,000 feet of the site. Municipal water is available and used at developed
properties within 1,000 feet of the site.
Based on the ITRC PVI guidance, additional evaluation of the PVI pathway for the residence on the
southeastern adjacent property is warranted. ITRC has established a vertical screening distance of 5
feet bls for sites with dissolved concentrations indicating the presence of residual LNAPL. The observed
groundwater concentration data in MW-2R, MW-9R and MW-10 is indicative of residual LNAPL per the
ITRC guidance. Groundwater was observed in the closest adjacent well to this structure (MW-2R) at a
depth of approximately 1 foot bls and has historically been measured in this well at a depth between
approximately 1 foot bls and 4 feet bls.
Based on the data presented in this Monitoring Report, Terracon recommends the following activities be
completed at the site:
Assess for potential indoor air impacts in the eastern adjoining residence.
Perform a receptor survey update.
Perform another sampling event in three months on monitoring wells MW-2R, MW-4, MW-5, MW-6, MW-
8, MW-9R, MW-10, MW-19, MW-23 and MW-24.

EXHIBITS
SITE
7.5 MINUTE SERIES (TOPOGRAPHIC)
Drawn By:
Checked By:
Approved By:
Project Mngr:
File No.
Date:
Scale:
Project No.
Consulting Engineers and Scientists
EXHIBITTOPOGRAPHIC VICINITY MAP
1
MONITORING REPORT
FORMER POTTER OIL COMPANY
309 CAVENAUGH STREET
WALLACE, NC
KAM
RLW
KAM/MRF
KAM
72159665A
AS SHOWN
MW72159665A-1
MARCH 2020 314 Beacon Drive Winterville, NC 28590
[phone] [phone]
*INDICATES WHICH MAP SITE IS LOCATED ON
1,000 FEET
500 FEET
1,500 FEET
THIS DIAGRAM IS FOR GENERAL LOCATION ONLY, AND IS NOT INTENDED FOR CONSTRUCTION PURPOSES
LEGEND
Drawn By:
Checked By:
Approved By:
Project Mngr:
File No.
Date:
Scale:
Project No.
Consulting Engineers and Scientists
EXHIBITSITE DIAGRAM
2
MONITORING REPORT
FORMER POTTER OIL COMPANY
309 CAVENAUGH STREET
WALLACE, NC
KAM
RLW
KAM/MRF
KAM
72159665A
AS SHOWN
MR72159665A-2
MARCH 2020 314 Beacon Drive Winterville, NC 28590
[phone] [phone]
Approximate Scale
0
(Feet)
120
SITE
RESIDENCER
X X X X
XXXXXEAST MU
R
P
H
Y

S
T
R
E
E
T
CAVENA
U
G
H

S
T
R
E
E
T
NORWOOD STREET
/
U
.S.
H
IGHWAY NORTH GRAHAM
STREET
BB&T
BANK
LIBERTY
TAX
CHURCH
R
SHED
A FORMER 10,000 GALLON GAS USTBFORMER 7,500 GALLON GAS USTCFORMER 1,000 GALLON KEROSENE USTDFORMER 10,000 GALLON DIESEL UST
A B
C D
E
F
G
E FORMER 1,000 GALLON GAS USTFFORMER 1,000 GALLON DIESEL USTGFORMER 1,000 GALLON GAS UST
HIJK
L
OIL CHANGE PITOC
OC
H FORMER 1,000 GALLON GAS USTIFORMER 2,000 GALLON GAS USTJFORMER 2,000 GALLON GAS USTKFORMER 2,000 GALLON GAS USTLFORMER 2,000 GALLON KEROSENE UST
N M
M FORMER TRUCK FUELING STATIONNFORMER 5,000 GALLON GAS AST
FEATURE ID TABLE
R
R
R
R
RESIDENTIAL
SHEDS
CHIC
BOUTIQUE
GRASS
FIELDFARM
BUREAU
R
LIGHTHOUSE DELIVERANCE
CHURCH OF CHRIST
BARBER SHOP,
STEALS & DEALS PARSONAGE
DITCH
CANOPY
TRILOK
ENTERPRISE USED
CAR AUTO SALES
FENCEXXX
ASPHALT
GRASS
GRAVEL
/DIRT
THIS DIAGRAM IS FOR GENERAL LOCATION ONLY, AND IS NOT INTENDED FOR CONSTRUCTION PURPOSES
LEGEND
Drawn By:
Checked By:
Approved By:
Project Mngr:
File No.
Date:
Scale:
Project No.
Consulting Engineers and Scientists
EXHIBITMONITORING WELL LOCATION MAP
3
MONITORING REPORT
FORMER POTTER OIL COMPANY
309 CAVENAUGH STREET
WALLACE, NC
KAM
RLW
KAM/MRF
KAM
72159665A
AS SHOWN
MW72159665A-3
MARCH 2020 314 Beacon Drive Winterville, NC 28590
[phone] [phone]
APPROXIMATE MONITORING WELL LOCATION
Approximate Scale
0
(Feet)
80
SITE
RESIDENCER
APPROXIMATE DEEP MONITORING WELL LOCATION
X X X X X X
XXXXXXXXCAVENA
U
G
H

S
T
R
E
E
T
NORWOOD STREET

/ U
.S
. H
IGHWAY NORTH GRAHAM
STREET
R
MW-8
MW-9R
MW-10
MW-11
MW-13
MW-14
MW-15
MW-18
MW-19
MW-20
MW-17
MW-12
MW-7
MW-2R
MW-3
MW-4
MW-5
MW-1
MW-6DW-1
R
R
R
R
RESIDENTIAL
GRASS
FIELD
R
CHURCH
DITCH
MW-16
(ABANDONED)
MW-21
MW-22
(NOT FOUND)
FENCEXXX
SHEDS
COMMERCIAL BUILDINGC
S
SS
C
S
R
(ABANDONED)
C
C
FORMER UST / AST AREAS
ASPHALT
GRASS
GRAVEL
/DIRT
/
MW-23
MW-24
STAGED
GRAVEL AREA
STAGED
TOPSOIL AREA
THIS DIAGRAM IS FOR GENERAL LOCATION ONLY, AND IS NOT INTENDED FOR CONSTRUCTION PURPOSES
LEGEND
Drawn By:
Checked By:
Approved By:
Project Mngr:
File No.
Date:
Scale:
Project No.
Consulting Engineers and Scientists
EXHIBITGROUNDWATER ELEVATION MAP
4
MONITORING REPORT
FORMER POTTER OIL COMPANY
309 CAVENAUGH STREET
WALLACE, NC
KAM
RLW
KAM/MRF
KAM
72159665A
AS SHOWN
MW72159665A-4
MARCH 2020 314 Beacon Drive Winterville, NC 28590
[phone] [phone]
APPROXIMATE MONITORING WELL LOCATION
Approximate Scale
0
(Feet)
80
SITE
RESIDENCER
APPROXIMATE DEEP MONITORING WELL LOCATION
X X X X X X
XXXXXXXXCAVENAU
G
H

S
T
R
E
E
T
NORWOOD STREET

/ U.S
. HIGHWAYNORTH GRAHAM
STREET
R
MW-8 MW-9R
MW-10
MW-11
MW-13
MW-14
MW-15
MW-18
MW-19
MW-20
MW-17
MW-12
MW-7
MW-2R
MW-3
MW-4
MW-5
MW-1
MW-6DW-1
R
R
R
R
RESIDENTIAL
GRASS
FIELD
R
CHURCH
DITCH
MW-16
(ABANDONED)
MW-21
MW-22
(NOT FOUND)
FENCEXXX
SHEDS
COMMERCIAL BUILDINGC
S
SS
C
S
R
(ABANDONED)
C
C
FORMER UST / AST AREAS
ASPHALT
GRASS
GRAVEL
/DIRT
/
MW-23
MW-24
NOT GAUGEDNG
NG
NG
NG
NG
NG
NG
NG
NG
NG
NG
NG
(98.51)
(99.30)
(98.10)
(NOT FOUND)
(98.33)
(96.96)
(98.25)
(98.07)
(96.57)
SURFICIAL WATER FLOW DIRECTION
GROUNDWATER ELEVATION, IN FEET
GROUNDWATER CONTOUR, IN FEET
(95.55)
95.3
(98.99)
THIS DIAGRAM IS FOR GENERAL LOCATION ONLY, AND IS NOT INTENDED FOR CONSTRUCTION PURPOSES
LEGEND
Drawn By:
Checked By:
Approved By:
Project Mngr:
File No.
Date:
Scale:
Project No.
Consulting Engineers and Scientists
EXHIBITGROUNDWATER ANALYTICAL RESULTS
5
MONITORING REPORT
FORMER POTTER OIL COMPANY
309 CAVENAUGH STREET
WALLACE, NC
KAM
RLW
KAM/MRF
KAM
72159665A
AS SHOWN
MR72159665A-5
MARCH 2020 314 Beacon Drive Winterville, NC 28590
[phone] [phone]
APPROXIMATE MONITORING WELL LOCATION
Approximate Scale
0
(Feet)
80
SITE
RESIDENCER
APPROXIMATE DEEP MONITORING WELL LOCATION
X X X X X X
XXXXXXXXCAVENAU
G
H

S
T
R
E
E
T
NORWOOD STREET

/ U.S
. HIGHWAYNORTH GRAHAM STREET
R
MW-8
MW-9R
MW-10
MW-11
MW-13
MW-14
MW-15
MW-18
MW-19
MW-20
MW-17
MW-12
MW-7
MW-2R
MW-3
MW-4
MW-5
MW-1
MW-6DW-1
R
R
R
R
RESIDENTIAL
GRASS
FIELD
R
CHURCH
DITCH
MW-16
(ABANDONED)
MW-21
MW-22
(NOT FOUND)
FENCEXXX
SHEDS
COMMERCIAL BUILDINGC
S
SS
C
S
R
(ABANDONED)
C
C
FORMER UST / AST AREAS
ASPHALT
GRASS
GRAVEL
/DIRT
/
MW-23
MW-24
MW-9R
BENZENE 3,170
220
29.5
332
91.5
158
69.1
ETHYLBENZENE
ISOPROPYLBENZENE (CUMENE)
NAPHTHALENE
1,2,4-TRIMETHYLBENZENE
N-PROPYLBENZENE
394.2XYLENES (TOTAL)
TOLUENE
698MTBE
MW-23
2.8MTBE
1.2DIISOPROPYL ETHER (IPE)
NOT SAMPLEDNS
NS
NS
NS
NSNS
NS
NS
NS
NS
NS
NS
MW-2R
BENZENE 1,860
819
33.7
1,260
1,140
789
83
ETHYLBENZENE
ISOPROPYLBENZENE (CUMENE)
NAPHTHALENE
1,2,4-TRIMETHYLBENZENE
1,3,5-TRIMETHYLBENZENE
N-PROPYLBENZENE
1,747XYLENES (TOTAL)
173
TOLUENE
167MTBE
MW-4
BENZENE 34.1
20.6
3.9
10.2
0.58
16.9
7
ETHYLBENZENE
ISOPROPYLBENZENE (CUMENE)
NAPHTHALENE
1,2,4-TRIMETHYLBENZENE
1,3,5-TRIMETHYLBENZENE
N-PROPYLBENZENE
14.01XYLENES (TOTAL)
5.5
TOLUENE
15.7MTBE
0.53DIISOPROPYL ETHER (IPE)
MW-6
1.5
3.9
ETHYLBENZENE
1,2,4-TRIMETHYLBENZENE
MW-19
BENZENE 284
46.1
8.4
56.7
52.3
5.5
ETHYLBENZENE
ISOPROPYLBENZENE (CUMENE)
NAPHTHALENE
N-PROPYLBENZENE
71.3XYLENES (TOTAL)
TOLUENE
11.1MTBE
NOTE: CONSTITUENTS RED ARE ABOVE
NCDEQ'S 2L GROUNDWATER
STANDARDS
CONSTITUENTS BLUE ARE ABOVE GCLS
MW-24
2.3ISOPROPYLBENZENE (CUMENE)
3.5MTBE
NS
N-BUTYLBENZENE 0.89
1,3,5-TRIMETHYLBENZENE 51.5
(NOT FOUND)
ND
NON DETECTEDND
MW-10
BENZENE 418
N-BUTYLBENZENE 47.8
307ETHYLBENZENE
21ISOPROPYLBENZENE (CUMENE)
275NAPHTHALENE
66.9N-PROPYLBENZENE
908TOLUENE
9381,2,4-TRIMETHYLBENZENE
1,3,5-TRIMETHYLBENZENE
2,310XYLENES (TOTAL)
297
SEC-BUTYBENZENE 4.5
SEC-BUTYBENZENE 0.79
1.5DIISOPROPYL ETHER (IPE)
1.7N-PROPYLBENZENE
THIS DIAGRAM IS FOR GENERAL LOCATION ONLY, AND IS NOT INTENDED FOR CONSTRUCTION PURPOSES
LEGEND
Drawn By:
Checked By:
Approved By:
Project Mngr:
File No.
Date:
Scale:
Project No.
Consulting Engineers and Scientists
EXHIBITBENZENE CONCENTRATION MAP
6
MONITORING REPORT
FORMER POTTER OIL COMPANY
309 CAVENAUGH STREET
WALLACE, NC
KAM
RLW
KAM/MRF
KAM
72159665A
AS SHOWN
MR72159665A-6
MARCH 2020 314 Beacon Drive Winterville, NC 28590
[phone] [phone]
APPROXIMATE MONITORING WELL LOCATION
Approximate Scale
0
(Feet)
80
SITE
RESIDENCER
APPROXIMATE DEEP MONITORING WELL LOCATION
X X X X X X
XXXXXXCAVENA
U
G
H

S
T
R
E
E
T
NORWOOD STREET

/
U.S
.
HIGHWAYNORTH GRAHAM STREET
R
MW-8 MW-9R
MW-10
MW-11
MW-13
MW-14
MW-15
MW-18
MW-19
MW-20
MW-17
MW-12
MW-7
MW-2R
MW-3
MW-4
MW-5
MW-1
MW-6DW-1
R
R
R
R
RESIDENTIAL
GRASS
FIELD
R
CHURCH
DITCH
MW-16
(ABANDONED)
MW-21
MW-22
(NOT FOUND)
FENCEXXX
SHEDS
COMMERCIAL BUILDINGC
S
SS
C
S
R
(ABANDONED)
C
C
MW-2R
BENZENE 1860 µg / L
MW-4
BENZENE 34.1 µg / L
MW-19
BENZENE 284 µg / L
BENZENE CONCENTRATION CONTOUR
FORMER UST / AST AREAS
<0.5
NOT SAMPLEDNS
NS
NS
NS
NS
NS
NS
NS
MW-23
MW-24
NS
NS
NS
MW-9R
BENZENE 3170 µg / L
NS
NS
<0.5
NS
<0.5
MW-10
BENZENE 418 µg / L
<0.5
(NOT FOUND)100300
0
1
0
0
0 400
1

TABLES

Table 1
Summary of Groundwater Analytical Results
Former Potter Oil Company
Wallace, Duplin County, NC
Terracon Project No. 72159665A
NCDEQ Incident No. 18374
Page 1 of 4

Analytical Method 6200B (or other volatile methods for historical analysis)
Contaminant of Concern -> Benzene n-Butylbenzene sec-Butylbenzene 1,2-Dibromoethane (EDB) Diisopropyl ether (IPE) Ethylbenzene Isopropylbenzene (cumene) Methylene Chloride Methyl Tert-Butyl Ethyl (MTBE) Naphthalene n-Propylbenzene Styrene Toluene 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Xylene (Total) Well
Sample ID
Date
Collected
MW-1 1/22/15 MW-1 has reportedly been abandoned since the last several groundwater sampling events.
MW-2R
5/14/09 7,560 n/a n/a n/a <83.5 1,840 n/a n/a 3,830 2,010 n/a n/a 5,910 1,460 382 5,480
2/25/13 3.2 <0.16 <0.19 <0.15 <0.15 2.2 <0.12 <0.39 0.39 <0.22 0.43 <0.15 0.93 1.2 0.25 0.88
1/22/15 1,670 <2.5 <2.5 <2.5 <2.5 718 45.5 <10 725 624 103 <2.5 839 885 260 1389.1
3/3/16 4,930 <6.2 <6.2 <6.2 9.5 1,040 44.1 <25 1,260 641 119 <6.2 710 839 203 1,956.4 1/15/18 1,630 <5 <5 <5 <5 871 49.1 <20 294 631 138 <5 299 901 145 1,428.4
5/30/19 1,920 <5 <5 <5 <5 692 31.7 <20 358 625 83.8 <5 464 565 99.9 1,092.3
2/10/20 1,860 <5 <5 <5 <5 819 33.7 <20 167 1,260 83 <5 1,140 789 173 1,747
MW-3 1/22/15 MW-3 has reportedly been abandoned since the last several groundwater sampling events.
MW-4
5/14/09 309 n/a n/a n/a <6.68 67.6 n/a n/a 214 12.9 n/a n/a 13.0 6.24 ND 16.9
2/25/13 0.36 <0.16 <0.19 <0.15 0.82 0.34 <0.12 <0.39 28 <0.22 <0.15 <0.15 <0.07 <0.14 <0.14 <0.32
1/22/15 254 <0.62 <0.62 <0.62 3.0 86.2 7.5 18.7 109 36.4 16.4 <0.62 4.8 51.6 16.1 57
3/3/16 495 <1 2 <1 4.2 173 13.7 <4 148 71.3 30.7 <1 18.4 121 37.8 175.5 1/15/18 91.3 <0.5 <0.5 <0.5 1.9 65.3 12.1 <2 46 42.6 24.6 <0.5 1.1 44.1 19.4 31.78
5/30/19 382 1.8 <1.2 <1.2 4.2 88.2 9.2 <5 163 54.3 17.2 <1.2 7.5 68.6 21.6 134.8
2/10/20 34.1 0.89 <0.5 <0.5 0.53 20.6 3.9 <2 15.7 10.2 7 <0.5 0.58 16.9 5.5 14.01
MW-5
5/14/09 3.44 n/a n/a n/a <1.67 4.45 n/a n/a <0.33 5.57 n/a n/a <0.33 6.91 1.2 2.84 2/25/13 0.64 <0.16 <0.19 <0.15 <0.15 <0.15 <0.12 <0.39 0.46 <0.22 <0.15 <0.15 <0.07 0.14 <0.14 0.17
1/22/15 155 <0.25 <0.25 <0.25 <0.25 34.5 1.8 <1.0 8.4 14.5 4.6 <0.25 30.6 26.7 5.5 42.6
3/3/16 1.3 <0.5 <0.5 <0.5 <0.5 0.28 J <0.5 <2 <0.5 <2 <0.5 <0.5 <0.5 0.38 J <0.5 0.28 J
1/15/18 97.7 <0.5 <0.5 <0.5 <0.5 8 <0.5 <2 7.8 2.4 <0.5 <0.5 11.2 3.1 0.79 13.6 5/30/19 2,660 <6.2 <6.2 <6.2 <6.2 276 8.4 <25 61 76.7 20.2 <6.2 284 127 26.6 499.5
2/10/20 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <2 <0.5 <2 <0.5 <0.5 <0.5 <0.5 <0.5 <1
MW-6
11/1/07 295 n/a n/a n/a <50 123 n/a n/a 240 n/a n/a n/a 67.6 n/a n/a 427
8/7/08 Free product was reported in this well on this date and a sample was not reportedly collected. 5/14/09 52.9 n/a n/a n/a <1.67 117 n/a n/a 11.4 33.8 n/a n/a 7.74 182 27 162
2/25/13 4.1 0.21 0.31 <0.15 <0.15 19 1.4 <0.39 0.45 6.0 2.8 <0.15 1.1 36 <0.14 18.2
1/22/15 5.0 <0.25 <0.25 <0.25 <0.25 29.5 2.1 <1.0 0.47 J 10.5 4.3 <0.25 0.79 65.6 16.7 51.3
3/3/16 4.8 <0.5 0.88 <0.5 <0.5 41.9 3.4 <2 <0.5 13.6 8.2 <0.5 0.84 75.5 <0.5 10.6 1/15/18 0.96 <0.5 <0.5 <0.5 <0.5 4.7 0.32J <2 <0.5 1.0J <0.5 <0.5 <0.5 9.7 4.7 13.8
5/30/19 338 <2 <2 <2 <2 419 17.5 <8 36.5 120 40.1 <2 46.3 288 <2 393.8
2/10/20 <0.5 <0.5 <0.5 <0.5 <0.5 1.5 <0.5 <2 <0.5 <2 <0.5 <0.5 <0.5 3.9 <0.5 <1
MW-7
11/1/07 <1.0 n/a n/a n/a <5.0 <1.0 n/a n/a <1.0 n/a n/a n/a <1.0 n/a n/a <3.0 8/7/08 0.310 n/a n/a n/a <0.15 <0.31 n/a n/a <0.12 <0.41 n/a n/a <0.28 n/a n/a <1.2
5/14/09 <0.2 n/a n/a n/a <1.97 0.96 n/a n/a <0.33 1.33 n/a n/a <0.33 1.82 ND <1.33
2/25/13 <0.09 <0.16 <0.19 <0.15 <0.15 <0.15 <0.12 <0.39 <0.14 <0.22 <0.15 <0.15 <0.07 <0.14 <0.14 <0.32
1/22/15 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <1.0 <0.25 <1.0 <0.25 <0.25 <0.25 <0.25 <0.25 <0.5
MW-8
5/14/09 2,810 n/a n/a n/a <33.4 1,410 n/a n/a 176 446 n/a n/a 138 210 79.7 1,400
2/25/13 470 7.6 4.8 <0.15 <0.15 200 37 <0.39 33 170 110 <0.15 62 12 9.4 212
1/22/15 559 <0.25 4.0 <0.25 <0.25 205 30.8 <1.0 27.1 160 78.5 <0.25 64.7 34.7 13.7 256.6
3/3/16 547 <2 4.0 <2 1.7 J 182 28.1 <8 32.1 181 79.3 <2 39.9 28 9.4 205.6 1/15/18 61.1 <0.5 <0.5 <0.5 <0.5 14.7 4 <2 6.4 15.4 10.9 <0.5 3.5 <0.5 <0.5 10.2
5/30/19 897 <5 <5 <5 <5 155 35.6 <20 25.4 155 101 <5 36.3 27.2 <5 181.7
2/10/20 A portion of the site is currently being used for topsoil and gravel staging and sales. MW-8 could not be located on this date and this well could potentially be located underneath a pile of topsoil.
NC 2L Groundwater Quality Standards (µg/l) 1 70 70 0.02 70 600 70 5 20 6 70 70 600 400 400 500
Gross Contamination Levels for Groundwater
(µg/l)
5,000 6,900 8,500 50 70,000 84,500 25,000 5,000 20,000 6,000 30,000 70,000 260,000 28,500 25,000 85,500

Table 1
Summary of Groundwater Analytical Results
Former Potter Oil Company
Wallace, Duplin County, NC
Terracon Project No. 72159665A
NCDEQ Incident No. 18374
Page 2 of 4

Analytical Method 6200B (or other volatile methods for historical analysis)
Contaminant of Concern -> Benzene n-Butylbenzene sec-Butylbenzene 1,2-Dibromoethane (EDB) Diisopropyl ether (IPE) Ethylbenzene Isopropylbenzene (cumene) Methylene Chloride Methyl Tert-Butyl Ethyl (MTBE) Naphthalene n-Propylbenzene Styrene Toluene 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Xylene (Total) Well Sample ID Date Collected
MW-9
11/1/07 7,010 n/a n/a n/a <50 85.1 n/a n/a 14,100 n/a n/a n/a 356 n/a n/a 1,410
8/7/08 MW-9 was reportedly not sampled on this date. 5/14/09 MW-9 was reportedly not sampled on this date. 2/25/13 MW-9 was reportedly not sampled on this date.
1/22/15 MW-9 could not be located on this date and has been replaced by MW-9R
MW-9R
5/21/15 6,250 17.6 10.2 <10 23.8 473 65.9 <40 1,940 579 194 <10 194 279 71.3 1288.40
3/3/16 2,830 7.9 J <10 <10 20.5 98.4 27.8 <40 1,220 259 75 <10 43.2 26 15.9 170.3 1/15/18 3,160 <10 <10 <10 13.7 298 37.5 <40 382 289 98.6 <10 61.1 170 <10 357.9
5/30/19 5,590 <20 <20 <20 24.8 665 49.7 <80 1,450 375 133 <20 57.8 73.2 24.9 386.7
2/10/2020 3,170 <12.5 <12.5 <12.5 <12.5 220 29.5 <50 698 332 69.1 <12.5 91.5 158 51.5 394.2
MW-10
11/1/07 Free product was reported in this well on this date and a sample was not reportedly collected. 8/7/08 Free product was reported in this well on this date and a sample was not reportedly collected.
5/14/09 9,660 n/a n/a n/a <167 1,450 n/a n/a 1,600 750 n/a n/a 10,100 1,960 572 7,540
2/25/13 3,000 110 <38 <30 <30 1,000 66 <78 180 850 230 <30 6,200 2,100 630 6,600
1/22/15 4,650 <2.5 <2.5 <2.5 <2.5 250 18.6 <10.0 289 141 57.4 3.3 J 2,710 516 169 1,572 3/3/16, 1/15/18, 5/30/19 MW-10 is located in the fenced back yard of a residential property adjoining the site, the gate to this fence was locked on 3/3/16 and the current resident was not home to let us into the yard.
2/10/20 418 47.8 <5 <5 <5 307 21 <20 <5 275 66.9 <5 908 938 297 2,310
MW-11
11/1/07 <1.0 n/a n/a n/a <5.0 6.21 n/a n/a 1.90 n/a n/a n/a <1.0 n/a n/a <3.0
8/7/08 <0.31 n/a n/a n/a <0.15 8.38 n/a n/a 3.39 6.06 n/a n/a <0.28 n/a n/a <1.2
5/14/09 0.730 n/a n/a n/a <1.67 18.5 n/a n/a 2.40 12.5 n/a n/a <0.33 4.08 ND <1.33 2/25/13 <0.09 0.83 1.8 <0.15 <0.15 2.8 2.2 <0.39 0.59 <0.22 4.7 <0.15 <0.07 <0.14 <0.14 <0.32 1/22/15 <0.25 0.57 1.9 <0.25 <0.25 2.0 2.2 <1.0 <0.25 <1.0 3.7 <0.25 <0.25 <0.25 <0.25 <0.5
MW-12
11/1/07 <1.0 n/a n/a n/a <5.0 <1.0 n/a n/a <1.0 n/a n/a n/a <1.0 n/a n/a <3.0
8/7/08 155 n/a n/a n/a 0.54 6.50 n/a n/a 2.38 8.39 n/a n/a 2.58 n/a n/a <1.2
5/14/09 <0.2 n/a n/a n/a <1.67 <0.67 n/a n/a <0.33 <1.0 n/a n/a <0.33 ND ND <1.33
2/25/13 <0.09 <0.16 <0.19 <0.15 <0.15 <0.15 <0.12 <0.39 <0.14 <0.22 <0.15 <0.15 <0.07 <0.14 <0.14 <0.32
1/22/15 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <1.0 <0.25 <1.0 <0.25 <0.25 <0.25 <0.25 <0.25 <0.5
MW-13
11/1/07 <1.0 n/a n/a n/a <5.0 <1.0 n/a n/a <1.0 n/a n/a n/a <1.0 n/a n/a <3.0
8/7/08 <0.31 n/a n/a n/a <0.15 <0.31 n/a n/a <0.12 <0.41 n/a n/a <0.28 n/a n/a <1.2 5/14/09 <0.20 n/a n/a n/a <1.67 <0.67 n/a n/a <0.33 <1.0 n/a n/a <0.33 ND ND <1.33
2/25/13 <0.09 <0.16 <0.19 <0.15 <0.15 <0.15 <0.12 <0.39 <0.14 <0.22 <0.15 <0.15 <0.07 <0.14 <0.14 <0.32
1/22/15 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <1.0 <0.25 <1.0 <0.25 <0.25 <0.25 <0.25 <0.25 <0.5
MW-14
11/1/07 <1.0 n/a n/a n/a <5.0 <1.0 n/a n/a <1.0 n/a n/a n/a <1.0 n/a n/a <3.0
8/7/08 <0.31 n/a n/a n/a <0.15 <0.31 n/a n/a <0.12 <0.41 n/a n/a <0.28 n/a n/a <1.2
5/14/09 <0.20 n/a n/a n/a <1.67 <0.67 n/a n/a <0.33 <1.0 n/a n/a <0.33 ND ND <1.33
2/25/13 <0.09 <0.16 <0.19 <0.15 <0.15 <0.15 <0.12 <0.39 <0.14 <0.22 <0.15 <0.15 <0.07 <0.14 <0.14 <0.32
1/22/15 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <1.0 <0.25 <1.0 <0.25 <0.25 <0.25 <0.25 <0.25 <0.5
NC 2L Groundwater Quality Standards (µg/l) 1 70 70 0.02 70 600 70 5 20 6 70 70 600 400 400 500
Gross Contamination Levels for Groundwater (µg/l) 5,000 6,900 8,500 50 70,000 84,500 25,000 5,000 20,000 6,000 30,000 70,000 260,000 28,500 25,000 85,500

Table 1
Summary of Groundwater Analytical Results
Former Potter Oil Company
Wallace, Duplin County, NC
Terracon Project No. 72159665A
NCDEQ Incident No. 18374
Page 3 of 4

Analytical Method 6200B (or other volatile methods for historical analysis)
Contaminant of Concern -> Benzene n-Butylbenzene sec-Butylbenzene 1,2-Dibromoethane (EDB) Diisopropyl ether (IPE) Ethylbenzene Isopropylbenzene (cumene) Methylene Chloride Methyl Tert-Butyl Ethyl (MTBE) Naphthalene n-Propylbenzene Styrene Toluene 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Xylene (Total) Well
Sample ID
Date
Collected
MW-15
11/1/07 <1.0 n/a n/a n/a <5.0 <1.0 n/a n/a <1.0 n/a n/a n/a <1.0 n/a n/a <3.0 8/7/08 <0.31 n/a n/a n/a <0.15 <0.31 n/a n/a <0.12 <0.41 n/a n/a <0.28 n/a n/a <1.2
5/14/09 <0.20 n/a n/a n/a <1.67 <0.67 n/a n/a <0.33 <1.0 n/a n/a <0.33 ND ND <1.33
2/25/13 <0.09 <0.16 <0.19 <0.15 <0.15 <0.15 <0.12 <0.39 <0.14 <0.22 <0.15 <0.15 <0.07 <0.14 <0.14 <0.32
1/22/15 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <1.0 <0.25 <1.0 <0.25 <0.25 <0.25 <0.25 <0.25 <0.5
MW-16
11/1/07 5.83 n/a n/a n/a <5.0 56.7 n/a n/a 5.62 n/a n/a n/a 1.29 n/a n/a 2.71
8/7/08 3.58 n/a n/a n/a <0.15 68.4 n/a n/a 5.41 23.5 n/a n/a 0.93 n/a n/a 1.55
5/14/09 0.83 n/a n/a n/a <1.67 22.7 n/a n/a <0.33 10.4 n/a n/a 0.44 14.6 0.61 5.11
2/25/13 0.45 0.57 0.42 <0.15 <0.15 16 1.9 <0.39 0.41 7.4 4.3 <0.15 0.21 6.2 0.84 1.0
1/22/15 <0.25 <0.25 <0.25 <0.25 <0.25 7.0 0.74 <1.0 <0.25 2.8 1.8 <0.25 <0.25 4.5 1.2 0.42 J
MW-17
11/1/07 <1.0 n/a n/a n/a <5.0 <1.0 n/a n/a <1.0 n/a n/a n/a <1.0 n/a n/a <3.0
8/7/08 <0.31 n/a n/a n/a <0.15 <0.31 n/a n/a 1.50 <0.41 n/a n/a <0.28 n/a n/a <1.2
5/14/09 <0.20 n/a n/a n/a <1.67 <0.67 n/a n/a <0.33 <1.0 n/a n/a <0.33 ND ND <1.33 2/25/13 <0.09 <0.16 <0.19 <0.15 <0.15 <0.15 <0.12 <0.39 <0.14 <0.22 <0.15 <0.15 <0.07 <0.14 <0.14 <0.32
1/22/15 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <1.0 <0.25 <1.0 <0.25 <0.25 <0.25 <0.25 <0.25 <0.5
MW-18
11/1/07 1.35 n/a n/a n/a <5.0 <1.0 n/a n/a 2.37 n/a n/a n/a <1.0 n/a n/a <3.0
8/7/08 0.490 n/a n/a n/a <0.15 <0.31 n/a n/a 6.06 <0.41 n/a n/a <0.28 n/a n/a <1.2 5/14/09 <0.2 n/a n/a n/a <1.67 <0.67 n/a n/a <0.33 <1.0 n/a n/a <0.33 ND ND <1.33
2/25/13 <0.09 <0.16 <0.19 <0.15 <0.15 <0.15 <0.12 <0.39 <0.14 <0.22 <0.15 <0.15 <0.07 <0.14 <0.14 <0.32
1/22/15 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <1.0 0.55 <1.0 <0.25 <0.25 <0.25 <0.25 <0.25 <0.5
MW-19
5/14/09 3,500 n/a n/a n/a <41.8 566 n/a n/a 3,640 231 n/a n/a 151 98.1 67.8 426 2/25/13 540 <3.2 <3.8 <3.0 <3.0 61 5.4 <7.8 110 <4.4 5.6 <3.0 56 8.2 15 111
1/22/15 749 <2.5 <2.5 <2.5 <2.5 55.2 8.8 <10.0 173 46.7 5.0 J <10.0 58.0 73.0 8.1 205.3
3/3/16 592 <2.5 2.7 <2.5 3.5 63.6 6.2 <10 69.2 55.4 6.3 <2.5 53.1 24.5 4.1 122.6
1/15/18 509 <2.5 <2.5 <2.5 <2.5 110 7.1 6.0J 78.1 81.2 8.8 <2.5 82.6 6.5 <2.5 196.2 5/30/19 727 <2.5 <2.5 <2.5 <2.5 232 18.4 <10 31.4 146 23.3 <2.5 221 <2.5 <2.5 232
2/10/20 284 <1 4.5 <1 <1 46.1 8.4 <4 11.1 56.7 5.5 <1 52.3 <1 <1 71.3
MW-20
11/1/07 <1.0 n/a n/a n/a <5.0 <1.0 n/a n/a <1.0 n/a n/a n/a <1.0 n/a n/a <3.0
8/7/08 <0.31 n/a n/a n/a <0.15 <0.31 n/a n/a <0.12 <0.41 n/a n/a <0.28 n/a n/a <1.2
5/14/09 <0.20 n/a n/a n/a <1.67 <0.67 n/a n/a <0.33 <1.0 n/a n/a <0.33 ND ND <1.33
2/25/13 <0.09 <0.16 <0.19 <0.15 <0.15 <0.15 <0.12 <0.39 <0.14 <0.22 <0.15 <0.15 <0.07 <0.14 <0.14 <0.32
1/22/15 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 1.1 J <0.25 <1.0 <0.25 <0.25 <0.25 <0.25 <0.25 <0.5
NC 2L Groundwater Quality Standards (µg/l) 1 70 70 0.02 70 600 70 5 20 6 70 70 600 400 400 500
Gross Contamination Levels for Groundwater
(µg/l)
5,000 6,900 8,500 50 70,000 84,500 25,000 5,000 20,000 6,000 30,000 70,000 260,000 28,500 25,000 85,500

Table 1
Summary of Groundwater Analytical Results
Former Potter Oil Company
Wallace, Duplin County, NC
Terracon Project No. 72159665A
NCDEQ Incident No. 18374
Page 4 of 4

Analytical Method 6200B (or other volatile methods for historical analysis)
Contaminant of Concern -> Benzene n-Butylbenzene sec-Butylbenzene 1,2-Dibromoethane (EDB) Diisopropyl ether (IPE) Ethylbenzene Isopropylbenzene (cumene) Methylene Chloride Methyl Tert-Butyl Ethyl (MTBE) Naphthalene n-Propylbenzene Styrene Toluene 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Xylene (Total) Well
Sample ID
Date
Collected
MW-21
8/7/08 <0.31 n/a n/a n/a <0.15 <0.31 n/a n/a 0.96 <0.41 n/a n/a <0.28 n/a n/a <1.2
5/14/09 <0.20 n/a n/a n/a <1.67 <0.67 n/a n/a 3.48 <1.0 n/a n/a <0.33 ND n/a <1.33
2/25/13 <0.09 <0.16 <0.19 <0.15 <0.15 <0.15 <0.12 <0.39 11 <0.22 <0.15 <0.15 0.22 <0.14 <0.14 <0.32
1/22/15 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <1.0 3.4 <1.0 <0.25 <0.25 <0.25 <0.25 <0.25 <0.5
MW-22
8/7/08 <0.31 n/a n/a n/a <0.15 <0.31 n/a n/a <0.12 <0.41 n/a n/a <0.28 n/a n/a <1.2 5/14/09 <0.20 n/a n/a n/a <1.67 <0.67 n/a n/a <0.33 <1.0 n/a n/a <0.33 ND n/a <1.33
2/25/13 Not sampled, reported as destroyed.
1/22/15 Not sampled, well not located and reported as being destroyed in the 2013 report.
MW-23
7/21/15 <0.50 <0.50 <0.50 <0.50 1.2 <0.50 <0.50 <2.0 3.0 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 3/3/16 <0.5 <0.5 <0.5 <0.5 1.6 <0.5 <0.5 <2 2.9 <2 <0.5 <0.5 <0.5 <0.5 <0.5 <1
1/15/18 <0.5 <0.5 <0.5 <0.5 1.5 <0.5 <0.5 <2 2.6 <2 <0.5 <0.5 <0.5 <0.5 <0.5 <1
5/30/19 <0.5 <0.5 <0.5 <0.5 2.1 <0.5 <0.5 <2 4.9 <2 <0.5 <0.5 <0.5 <0.5 <0.5 <1
2/10/20 <0.5 <0.5 <0.5 <0.5 1.2 <0.5 <0.5 <2 2.8 <2 <0.5 <0.5 <0.5 <0.5 <0.5 <1
MW-24
7/21/15 84.8 <0.50 <0.50 <0.50 4.9 7.1 11.6 <2.0 23.2 15.7 16.4 <0.50 2.8 2.9 2.1 16.7
3/3/16 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <2 <0.5 <2 <0.5 <0.5 <0.5 <0.5 <0.5 <1
1/15/18 <0.5 <0.5 0.39J <0.5 2.4 <0.5 0.78 <2 15 <2 <0.5 <0.5 <05 <0.5 <0.5 <1
5/30/19 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 0.94 <2 10 <2 <0.5 <0.5 <0.5 <0.5 <0.5 <1 2/10/20 <0.5 <0.5 0.79 <0.5 1.5 <0.5 2.3 <2 3.5 <2 1.7 <0.5 <0.5 <0.5 <0.5 <1
MW-PO (field
blank)
1/15/18 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <2 <0.5 <2 <0.5 <0.5 <0.5 <0.5 <0.5 <1
5/30/19 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <2 <0.5 <2 <0.5 <0.5 <0.5 <0.5 <0.5 <1
2/10/20 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <2 <0.5 <2 <0.5 <0.5 <0.5 <0.5 <0.5 <1
DW-1
11/1/07 <1.0 n/a n/a n/a <5.0 <1.0 n/a n/a <1.0 n/a n/a n/a <1.0 n/a n/a <3.0
8/7/08 <0.31 n/a n/a n/a <0.15 <0.31 n/a n/a <0.12 <0.41 n/a n/a <0.28 n/a n/a <1.2
5/14/09 <0.20 n/a n/a n/a <1.67 <0.67 n/a n/a <0.33 <1.0 n/a n/a <0.33 ND ND <1.33
2/25/13 DW-1 was reportedly not sampled on this date.
1/22/15 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <1.0 <0.25 <1.0 <0.25 <0.25 <0.25 <0.25 <0.25 <0.5
NC 2L Groundwater Quality Standards (µg/l) 1 70 70 0.02 70 600 70 5 20 6 70 70 600 400 400 500
Gross Contamination Levels for Groundwater (µg/l) 5,000 6,900 8,500 50 70,000 84,500 25,000 5,000 20,000 6,000 30,000 70,000 260,000 28,500 25,000 85,500
Table 1 includes the seven most recent groundwater sampling events for each monitoring well (if applicable). MW-1 and MW-3 were reportedly abandoned several years ago, have not been sampled during the seven most recent sampling events and their historical analytical results are not
listed in Table 1.
Monitoring wells DW-1, MW-7, MW-11 through MW-18, MW-20 and MW-21 were not requested to be sampled during the March 2016, January 2018, May 2019 and February 2020 sampling events. MW-22 has reportedly been destroyed and is no longer considered a part of the site’s groundwater
network.
Shaded constituents are above NCDEQs Groundwater Quality Standards; Concentrations are reported in µg/l (parts per billion); Constituents in the table in red are above Gross Contamination Levels for Groundwater; ND = Non Detect (results reportedly below the laboratory’s method detection
limits); Analytical results indicating method detection limits were not available in one or more of the historical reports and “ND” is used instead of “< the reported method detection limit”; Multiple constituents analyzed below the laboratory’s method detection limits in the groundwater sample are
not listed in the above table. NE = Not Established, an applicable 2L Standard or GCL has not be established by NCDEQ. Constituents analyzed to be below the 2L Standard in historical data may not be listed in this table. According to the analytical laboratory that analyzed these samples, the
“J” qualifier associated with some of the constituents is an estimated concentration above the adjusted method detection limit and below the adjusted reporting limit. n/a = sample Not Analyzed for the indicated parameter.
Table 2
Monitoring Well Construction Details and Groundwater Elevations
Former Potter Oil Company
Wallace, NC
Terracon Project Number 72159665A
NCDEQ Incident Number 18374
Page 1 of 3

Well ID Date
Installed
Well
Diameter
(inches)
Total Well Depth From
Top of Casing
(measured on
1/22/15)
Groundwater
Elevation
Measurement
Date
Top of
Casing
Elevation*
Depth to
Water
(Ft. – TOC.)A
Groundwater
Elevation
(Ft. – TOC.)B
Free
Product
Thickness
(ft.)
MW-2R 5/14/09 2 12.10
2/25/13
99.17
2.13 97.04 N/O
1/22/15 2.20 96.97 N/O
3/3/16 1.64 97.53 N/O
1/15/18 1.35 97.82 N/O
5/30/19 4.20 94.97 N/O
2/10/20 0.92 98.25 N/O
MW-4 Between
1999 and
2001
1 11.95
2/25/13
98.81
0.10 98.71 N/O
1/22/15 0.78 98.03 N/O
3/3/16 1.00 97.81 N/O
1/15/18 0.49 98.32 N/O
5/3/019 3.32 95.49 N/O
2/10/20 0.30 98.51 N/O
MW-5 Between
1999 and
2001
1 10.40
2/25/13
100.35
2.90 97.45 N/O
1/22/15 2.59 97.76 N/O
3/3/16 2.18 98.17 N/O
1/15/18 1.99 98.36 N/O
5/30/19 5.89 94.46 N/O
2/10/20 1.05 99.30 N/O
MW-6 Between
1999 and
2001 1 9.54
2/25/13
98.85
2.12 96.73 N/O
1/22/15 2.04 96.81 N/O
3/3/16 1.97 96.88 N/O
1/15/18 1.44 97.41 N/O
5/30/19 4.49 94.36 N/O
2/10/20 0.75 98.10 N/O
MW-7 Between
1999 and
2001 1 11.89
11/1/07
98.08
2.32 95.76 N/O
8/7/08 4.50 93.58 N/O
5/14/09 2.71 95.37 N/O
2/25/13 2.31 95.77 N/O
1/22/15 2.34 95.74 N/O
3/3/16 N/G N/G N/G
MW-8 Between
1999 and
2001 2 11.57
2/25/13
98.65
1.04 97.61 N/O
1/22/15 1.00 97.65 N/O
3/3/16 1.21 97.44 N/O
1/15/18 0.92 97.73 N/O
5/30/19 2.73 95.92 N/O
2/10/20 Not located, potentially under a soil pile staged
onsite
MW-9
Between
1999 and
2001 2 Reported as 12 in
historical reports
11/1/07
Unknown, well not located during the past
several sampling events
Unknown
8/7/08 Unknown
5/14/09 Unknown
2/25/13 Unknown
1/22/15 Unknown
MW-9R 5/20/16 2 11.52
5/21/15
99.46
1.72 97.74 N/O
3/3/16 2.19 97.27 N/O
1/15/18 1.79 97.67 N/O
5/30/19 3.98 95.48 N/O
2/10/20 1.13 98.33 N/O
MW-10 Between
1999 and
2001 2 11.62
11/1/07
100.00
5.71 97.62 4.56
8/7/08 6.54 98.65 6.31
5/14/09 3.30 96.70 N/O
2/25/13 2.45 97.55 N/O
1/22/15 2.28 97.72 N/O
3/3/16 N/G N/G N/G
2/10/20 1.01 98.99 N/O

Table 2
Monitoring Well Construction Details and Groundwater Elevations
Former Potter Oil Company
Wallace, NC
Terracon Project Number 72159665A
NCDEQ Incident Number 18374

Page 2 of 3

Well ID Date
Installed
Well
Diameter
(inches)
Total Well Depth From
Top of Casing
(measured on
7/23/14)
Groundwater
Elevation
Measurement
Date
Top of
Casing
Elevation*
Depth to
Water
(Ft. – TOC.)A
Groundwater
Elevation
(Ft. – TOC.)B
Free
Product
Thickness (ft.)
MW-11 Between 1999 and
2001 2 11.06
11/1/07
97.82
3.05 94.77 N/O
8/7/08 3.26 94.56 N/O
5/14/09 3.26 94.56 N/O
2/25/13 3.75 94.07 N/O
1/22/15 3.50 94.32 N/O
3/3/16 N/G N/G N/G
MW-12 Between 1999 and
2001 2 11.65
11/1/07
99.92
5.36 94.56 N/O
8/7/08 7.18 92.74 N/O
5/14/09 3.50 96.42 N/O
2/25/13 2.69 97.23 N/O
1/22/15 2.37 97.55 N/O
3/3/16 N/G N/G N/G
MW-13 4/18/06 2 12.25
11/1/07
98.90
2.93 95.67 N/O
8/7/08 3.71 95.19 N/O
5/14/09 3.37 95.53 N/O
2/25/13 3.28 95.62 N/O
1/22/15 3.10 95.80 N/O
3/3/16 N/G N/G N/G
MW-14 4/18/06 2 11.15
11/1/07
100.23
1.68 98.55 N/O
8/7/08 2.10 98.13 N/O
5/14/09 1.89 98.34 N/O
2/25/13 1.70 98.53 N/O
1/22/15 1.39 98.84 N/O
3/3/16 N/G N/G N/G
MW-15 4/18/06 2 10.84
11/1/07
99.57
2.91 96.66 N/O
8/7/08 4.09 95.48 N/O
5/14/09 2.40 97.17 N/O
2/25/13 1.74 97.83 N/O
1/22/15 1.49 98.08 N/O
3/3/16 N/G N/G N/G
MW-16 4/18/06 2 11.89
11/1/07
100.17
4.72 95.45 N/O
8/7/08 3.68 96.49 N/O
5/14/09 3.47 96.70 N/O
2/25/13 2.81 97.36 N/O
1/22/15 2.34 97.83 N/O
3/3/16 N/G N/G N/G
MW-17 4/18/06 2 11.60
11/1/07
99.93
4.96 94.97 N/O
8/7/08 6.87 93.06 N/O
5/14/09 3.36 96.57 N/O
2/25/13 2.64 97.29 N/O
1/22/15 2.25 97.68 N/O
3/3/16 N/G N/G N/G
MW-18 4/18/06 2 11.92
11/1/07
99.47
5.37 94.10 N/O
8/7/08 7.09 92.38 N/O
5/14/09 4.27 95.20 N/O
2/25/13 3.57 98.50 3.56
1/22/15 3.85 95.62 N/O
3/3/16 N/G N/G N/G
MW-19 4/18/06 2 11.19
2/25/13
98.90
2.81 96.09 N/O
1/22/15 2.71 96.19 N/O
3/3/16 2.88 96.02 N/O
1/15/18 2.51 96.39 N/O
5/30/19 5.12 93.78 N/O
2/10/20 1.94 96.96 N/O

Table 2
Monitoring Well Construction Details and Groundwater Elevations
Former Potter Oil Company
Wallace, NC
Terracon Project Number 72159665A
NCDEQ Incident Number 18374

Page 3 of 3

Well ID Date
Installed
Well
Diameter
(inches)
Total Well Depth From
Top of Casing
(measured on
7/23/14)
Groundwater
Elevation
Measurement
Date
Top of
Casing
Elevation*
Depth to
Water
(Ft. – TOC.)A
Groundwater
Elevation
(Ft. – TOC.)B
Free
Product
Thickness (ft.)
MW-20 4/18/06 2 9.47
8/7/08
98.03
4.71 93.32 N/O
5/14/09 2.38 95.65 N/O
2/25/13 1.82 95.21 N/O
1/22/15 1.66 96.37 N/O
3/3/16 N/G N/G N/G
1/15/18 N/G N/G N/G
MW-21 8/6/08 2 12.42
8/7/08
99.39
7.04 92.35 N/O
5/14/09 4.57 94.82 N/O
2/25/13 1.94 97.45 N/O
1/22/15 1.73 97.66 N/O
3/3/16 N/G N/G N/G
MW-22 8/6/08 2 Reported as 12 in
historical reports
8/7/08
97.70
7.86 89.84 N/O
5/14/09 2.79 94.91 N/O
2/25/13 reported as destroyed N/O
1/22/15 not located; reportedly
destroyed N/O
MW-23 7/16/15 2 12.20
7/21/15
98.34
2.68 95.66 N/O
3/3/16 2.27 96.07 N/O
1/15/18 2.44 95.90 N/O
5/30/19 2.79 95.55 N/O
2/10/20 1.77 96.57 N/O
MW-24 7/16/15 2 12.25
7/21/15
99.25
3.84 95.41 N/O
3/3/16 1.92 97.33 N/O
1/15/18 1.70 97.55 N/O
5/30/19 3.38 95.87 N/O
2/10/20 1.18 98.07 N/O

Table 2 indicates the six latest groundwater elevation data obtained at the site, including the most current gauging event, if applicable.
Monitoring wells MW-7, MW-11 through MW-18, MW-20 and MW-21 were not requested to be sampled during the February 2020
sampling event and were not gauged on this date. MW-1, MW-2, MW-3 and MW-22 have reportedly been abandoned or destroyed
and are no longer considered a part of the site’s groundwater network and historic groundwater elevations for these three wells is not
included in Table 2. MW-8 could not be located during the February 2020 site visit and is potentially located underneath a staged soil pile from a portion of the site’s current usage as a topsoil and gravel sales lot.

*Please note that the top of casing measurements in Table 2 were obtained through our review of historical reports and were
established by other consultants. The top of casing measurement for MW-9R. MW-23 and MW-24 were established on 3/3/16 and
the top of casing previously established for MW-8 (98.65) in historical reports was used as the benchmark for surveying these three
wells.

N/M = Not Measured; N/G = Not Gauged, well was not gauged for depth to water; N/O = Not Observed (Free Product Not Observed);
A = Ft.-TOC. – Water level measured from the top of the well casing; B = Ft.-Elev. – Elevation in feet.

APPENDIX A
LABORATORY ANALYTICAL RESULTS AND
CHAIN-OF-CUSTODY FORMS

#=CL#
February 18, 2020
LIMS USE: FR - ALLEN MCCOLL
LIMS OBJECT ID: 92464598
92464598
Project:
Pace Project No.:
RE:
Mr. Allen McColl
Terracon
314 Beacon Drive
Winterville, NC 28590
Former Potter Oil
Dear Mr. McColl:
Enclosed are the analytical results for sample(s) received by the laboratory on February 11, 2020.
The results relate only to the samples included in this report. Results reported herein conform to the
most current, applicable TNI/NELAC standards and the laboratory's Quality Assurance Manual,
where applicable, unless otherwise noted in the body of the report.
If you have any questions concerning this report, please feel free to contact me.
Sincerely,
Taylor Ezell
[e-mail]
Project Manager
[phone]
Enclosures
cc:Nick Saieed, Terracon
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.
Pace Analytical Services, LLC
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[phone]
Page 1 of 48
#=CP#
CERTIFICATIONS
Pace Project No.:
Project:
92464598
Former Potter Oil
Pace Analytical Services Charlotte
9800 Kincey Ave. Ste 100, Huntersville, NC 28078
Louisiana/NELAP Certification # LA170028
North Carolina Drinking Water Certification #: 37706
North Carolina Field Services Certification #: 5342
North Carolina Wastewater Certification #: 12
South Carolina Certification #: 99006001
Florida/NELAP Certification #: E87627
Kentucky UST Certification #: 84
Virginia/VELAP Certification #: 460221
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.
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Page 2 of 48
#=SA#
SAMPLE ANALYTE COUNT
Pace Project No.:
Project:
92464598
Former Potter Oil
Lab ID Sample ID Method
Analytes
Reported LaboratoryAnalysts
92464598001 MW-2R SM 6200B 63 PASI-CCL
92464598002 MW-4 SM 6200B 63 PASI-CCL
92464598003 MW-PO SM 6200B 63 PASI-CCL
92464598004 MW-5 SM 6200B 63 PASI-CCL
92464598005 MW-6 SM 6200B 63 PASI-CCL
92464598006 MW-9R SM 6200B 63 PASI-CCL
92464598007 MW-10 SM 6200B 63 PASI-CCL
92464598008 MW-19 SM 6200B 63 PASI-CCL
92464598009 MW-23 SM 6200B 63 PASI-CCL
92464598010 MW-24 SM 6200B 63 PASI-CCL
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.
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#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92464598
Former Potter Oil
Sample:MW-2R Lab ID:92464598001 Collected:02/10/20 12:44 Received:02/11/20 09:35 Matrix:Water
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: SM 6200B6200B MSV
Benzene 1860 ug/L 02/17/20 20:48 71-43-25.0 10
Bromobenzene ND ug/L 02/17/20 20:48 108-86-15.0 10
Bromochloromethane ND ug/L 02/17/20 20:48 74-97-55.0 10
Bromodichloromethane ND ug/L 02/17/20 20:48 75-27-45.0 10
Bromoform ND ug/L 02/17/20 20:48 75-25-25.0 10
Bromomethane ND ug/L 02/17/20 20:48 74-83-950.0 10
n-Butylbenzene ND ug/L 02/17/20 20:48 104-51-85.0 10
sec-Butylbenzene ND ug/L 02/17/20 20:48 135-98-85.0 10
tert-Butylbenzene ND ug/L 02/17/20 20:48 98-06-65.0 10
Carbon tetrachloride ND ug/L 02/17/20 20:48 56-23-55.0 10
Chlorobenzene ND ug/L 02/17/20 20:48 108-90-75.0 10
Chloroethane ND ug/L 02/17/20 20:48 75-00-310.0 10
Chloroform ND ug/L 02/17/20 20:48 67-66-35.0 10
Chloromethane ND ug/L 02/17/20 20:48 74-87-310.0 10
2-Chlorotoluene ND ug/L 02/17/20 20:48 95-49-85.0 10
4-Chlorotoluene ND ug/L 02/17/20 20:48 106-43-45.0 10
1,2-Dibromo-3-chloropropane ND ug/L 02/17/20 20:48 96-12-810.0 10
Dibromochloromethane ND ug/L 02/17/20 20:48 124-48-15.0 10
1,2-Dibromoethane (EDB)ND ug/L 02/17/20 20:48 106-93-45.0 10
Dibromomethane ND ug/L 02/17/20 20:48 74-95-35.0 10
1,2-Dichlorobenzene ND ug/L 02/17/20 20:48 95-50-15.0 10
1,3-Dichlorobenzene ND ug/L 02/17/20 20:48 541-73-15.0 10
1,4-Dichlorobenzene ND ug/L 02/17/20 20:48 106-46-75.0 10
Dichlorodifluoromethane ND ug/L 02/17/20 20:48 75-71-85.0 10
1,1-Dichloroethane ND ug/L 02/17/20 20:48 75-34-35.0 10
1,2-Dichloroethane ND ug/L 02/17/20 20:48 107-06-25.0 10
1,1-Dichloroethene ND ug/L 02/17/20 20:48 75-35-45.0 10
cis-1,2-Dichloroethene ND ug/L 02/17/20 20:48 156-59-25.0 10
trans-1,2-Dichloroethene ND ug/L 02/17/20 20:48 156-60-55.0 10
1,2-Dichloropropane ND ug/L 02/17/20 20:48 78-87-55.0 10
1,3-Dichloropropane ND ug/L 02/17/20 20:48 142-28-95.0 10
2,2-Dichloropropane ND ug/L 02/17/20 20:48 594-20-75.0 10
1,1-Dichloropropene ND ug/L 02/17/20 20:48 563-58-65.0 10
cis-1,3-Dichloropropene ND ug/L 02/17/20 20:48 10061-01-55.0 10
trans-1,3-Dichloropropene ND ug/L 02/17/20 20:48 10061-02-65.0 10
Diisopropyl ether ND ug/L 02/17/20 20:48 108-20-35.0 10
Ethylbenzene 819 ug/L 02/17/20 20:48 100-41-45.0 10
Hexachloro-1,3-butadiene ND ug/L 02/17/20 20:48 87-68-320.0 10
Isopropylbenzene (Cumene)33.7 ug/L 02/17/20 20:48 98-82-85.0 10
Methylene Chloride ND ug/L 02/17/20 20:48 75-09-220.0 10
Methyl-tert-butyl ether 167 ug/L 02/17/20 20:48 1634-04-45.0 10
Naphthalene 1260 ug/L 02/17/20 20:48 91-20-320.0 10
n-Propylbenzene 83.0 ug/L 02/17/20 20:48 103-65-15.0 10
Styrene ND ug/L 02/17/20 20:48 100-42-55.0 10
1,1,1,2-Tetrachloroethane ND ug/L 02/17/20 20:48 630-20-65.0 10
1,1,2,2-Tetrachloroethane ND ug/L 02/17/20 20:48 79-34-55.0 10
Tetrachloroethene ND ug/L 02/17/20 20:48 127-18-45.0 10
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 02/18/2020 03:35 PM
Pace Analytical Services, LLC
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Page 4 of 48
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92464598
Former Potter Oil
Sample:MW-2R Lab ID:92464598001 Collected:02/10/20 12:44 Received:02/11/20 09:35 Matrix:Water
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: SM 6200B6200B MSV
Toluene 1140 ug/L 02/17/20 20:48 108-88-35.0 10
1,2,3-Trichlorobenzene ND ug/L 02/17/20 20:48 87-61-620.0 10
1,2,4-Trichlorobenzene ND ug/L 02/17/20 20:48 120-82-120.0 10
1,1,1-Trichloroethane ND ug/L 02/17/20 20:48 71-55-65.0 10
1,1,2-Trichloroethane ND ug/L 02/17/20 20:48 79-00-55.0 10
Trichloroethene ND ug/L 02/17/20 20:48 79-01-65.0 10
Trichlorofluoromethane ND ug/L 02/17/20 20:48 75-69-410.0 10
1,2,3-Trichloropropane ND ug/L 02/17/20 20:48 96-18-45.0 10
1,2,4-Trimethylbenzene 789 ug/L 02/17/20 20:48 95-63-65.0 10
1,3,5-Trimethylbenzene 173 ug/L 02/17/20 20:48 108-67-85.0 10
Vinyl chloride ND ug/L 02/17/20 20:48 75-01-410.0 10
m&p-Xylene 1550 ug/L 02/17/20 20:48 179601-23-110.0 10
o-Xylene 197 ug/L 02/17/20 20:48 95-47-65.0 10
Surrogates
1,2-Dichloroethane-d4 (S)105 %02/17/20 20:48 17060-07-070-130 10
4-Bromofluorobenzene (S)100 %02/17/20 20:48 460-00-470-130 10
Toluene-d8 (S)101 %02/17/20 20:48 2037-26-570-130 10
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 02/18/2020 03:35 PM
Pace Analytical Services, LLC
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Page 5 of 48
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92464598
Former Potter Oil
Sample:MW-4 Lab ID:92464598002 Collected:02/10/20 12:53 Received:02/11/20 09:35 Matrix:Water
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: SM 6200B6200B MSV
Benzene 34.1 ug/L 02/18/20 11:27 71-43-20.50 1
Bromobenzene ND ug/L 02/18/20 11:27 108-86-10.50 1
Bromochloromethane ND ug/L 02/18/20 11:27 74-97-50.50 1
Bromodichloromethane ND ug/L 02/18/20 11:27 75-27-40.50 1
Bromoform ND ug/L 02/18/20 11:27 75-25-20.50 1
Bromomethane ND ug/L 02/18/20 11:27 74-83-95.0 1
n-Butylbenzene 0.89 ug/L 02/18/20 11:27 104-51-80.50 1
sec-Butylbenzene ND ug/L 02/18/20 11:27 135-98-80.50 1
tert-Butylbenzene ND ug/L 02/18/20 11:27 98-06-60.50 1
Carbon tetrachloride ND ug/L 02/18/20 11:27 56-23-50.50 1
Chlorobenzene ND ug/L 02/18/20 11:27 108-90-70.50 1
Chloroethane ND ug/L 02/18/20 11:27 75-00-31.0 1
Chloroform ND ug/L 02/18/20 11:27 67-66-30.50 1
Chloromethane ND ug/L 02/18/20 11:27 74-87-31.0 1
2-Chlorotoluene ND ug/L 02/18/20 11:27 95-49-80.50 1
4-Chlorotoluene ND ug/L 02/18/20 11:27 106-43-40.50 1
1,2-Dibromo-3-chloropropane ND ug/L 02/18/20 11:27 96-12-81.0 1
Dibromochloromethane ND ug/L 02/18/20 11:27 124-48-10.50 1
1,2-Dibromoethane (EDB)ND ug/L 02/18/20 11:27 106-93-40.50 1
Dibromomethane ND ug/L 02/18/20 11:27 74-95-30.50 1
1,2-Dichlorobenzene ND ug/L 02/18/20 11:27 95-50-10.50 1
1,3-Dichlorobenzene ND ug/L 02/18/20 11:27 541-73-10.50 1
1,4-Dichlorobenzene ND ug/L 02/18/20 11:27 106-46-70.50 1
Dichlorodifluoromethane ND ug/L 02/18/20 11:27 75-71-80.50 1
1,1-Dichloroethane ND ug/L 02/18/20 11:27 75-34-30.50 1
1,2-Dichloroethane ND ug/L 02/18/20 11:27 107-06-20.50 1
1,1-Dichloroethene ND ug/L 02/18/20 11:27 75-35-40.50 1
cis-1,2-Dichloroethene ND ug/L 02/18/20 11:27 156-59-20.50 1
trans-1,2-Dichloroethene ND ug/L 02/18/20 11:27 156-60-50.50 1
1,2-Dichloropropane ND ug/L 02/18/20 11:27 78-87-50.50 1
1,3-Dichloropropane ND ug/L 02/18/20 11:27 142-28-90.50 1
2,2-Dichloropropane ND ug/L 02/18/20 11:27 594-20-70.50 1
1,1-Dichloropropene ND ug/L 02/18/20 11:27 563-58-60.50 1
cis-1,3-Dichloropropene ND ug/L 02/18/20 11:27 10061-01-50.50 1
trans-1,3-Dichloropropene ND ug/L 02/18/20 11:27 10061-02-60.50 1
Diisopropyl ether 0.53 ug/L 02/18/20 11:27 108-20-30.50 1
Ethylbenzene 20.6 ug/L 02/18/20 11:27 100-41-40.50 1
Hexachloro-1,3-butadiene ND ug/L 02/18/20 11:27 87-68-32.0 1
Isopropylbenzene (Cumene)3.9 ug/L 02/18/20 11:27 98-82-80.50 1
Methylene Chloride ND ug/L 02/18/20 11:27 75-09-22.0 1
Methyl-tert-butyl ether 15.7 ug/L 02/18/20 11:27 1634-04-40.50 1
Naphthalene 10.2 ug/L 02/18/20 11:27 91-20-32.0 1
n-Propylbenzene 7.0 ug/L 02/18/20 11:27 103-65-10.50 1
Styrene ND ug/L 02/18/20 11:27 100-42-50.50 1
1,1,1,2-Tetrachloroethane ND ug/L 02/18/20 11:27 630-20-60.50 1
1,1,2,2-Tetrachloroethane ND ug/L 02/18/20 11:27 79-34-50.50 1
Tetrachloroethene ND ug/L 02/18/20 11:27 127-18-40.50 1
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 02/18/2020 03:35 PM
Pace Analytical Services, LLC
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Page 6 of 48
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92464598
Former Potter Oil
Sample:MW-4 Lab ID:92464598002 Collected:02/10/20 12:53 Received:02/11/20 09:35 Matrix:Water
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: SM 6200B6200B MSV
Toluene 0.58 ug/L 02/18/20 11:27 108-88-30.50 1
1,2,3-Trichlorobenzene ND ug/L 02/18/20 11:27 87-61-62.0 1
1,2,4-Trichlorobenzene ND ug/L 02/18/20 11:27 120-82-12.0 1
1,1,1-Trichloroethane ND ug/L 02/18/20 11:27 71-55-60.50 1
1,1,2-Trichloroethane ND ug/L 02/18/20 11:27 79-00-50.50 1
Trichloroethene ND ug/L 02/18/20 11:27 79-01-60.50 1
Trichlorofluoromethane ND ug/L 02/18/20 11:27 75-69-41.0 1
1,2,3-Trichloropropane ND ug/L 02/18/20 11:27 96-18-40.50 1
1,2,4-Trimethylbenzene 16.9 ug/L 02/18/20 11:27 95-63-60.50 1
1,3,5-Trimethylbenzene 5.5 ug/L 02/18/20 11:27 108-67-80.50 1
Vinyl chloride ND ug/L 02/18/20 11:27 75-01-41.0 1
m&p-Xylene 13.3 ug/L 02/18/20 11:27 179601-23-11.0 1
o-Xylene 0.71 ug/L 02/18/20 11:27 95-47-60.50 1
Surrogates
1,2-Dichloroethane-d4 (S)100 %02/18/20 11:27 17060-07-070-130 1
4-Bromofluorobenzene (S)99 %02/18/20 11:27 460-00-470-130 1
Toluene-d8 (S)104 %02/18/20 11:27 2037-26-570-130 1
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 02/18/2020 03:35 PM
Pace Analytical Services, LLC
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Page 7 of 48
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92464598
Former Potter Oil
Sample:MW-PO Lab ID:92464598003 Collected:02/10/20 11:31 Received:02/11/20 09:35 Matrix:Water
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: SM 6200B6200B MSV
Benzene ND ug/L 02/17/20 18:26 71-43-20.50 1
Bromobenzene ND ug/L 02/17/20 18:26 108-86-10.50 1
Bromochloromethane ND ug/L 02/17/20 18:26 74-97-50.50 1
Bromodichloromethane ND ug/L 02/17/20 18:26 75-27-40.50 1
Bromoform ND ug/L 02/17/20 18:26 75-25-20.50 1
Bromomethane ND ug/L 02/17/20 18:26 74-83-9 M15.0 1
n-Butylbenzene ND ug/L 02/17/20 18:26 104-51-80.50 1
sec-Butylbenzene ND ug/L 02/17/20 18:26 135-98-80.50 1
tert-Butylbenzene ND ug/L 02/17/20 18:26 98-06-60.50 1
Carbon tetrachloride ND ug/L 02/17/20 18:26 56-23-50.50 1
Chlorobenzene ND ug/L 02/17/20 18:26 108-90-70.50 1
Chloroethane ND ug/L 02/17/20 18:26 75-00-31.0 1
Chloroform ND ug/L 02/17/20 18:26 67-66-30.50 1
Chloromethane ND ug/L 02/17/20 18:26 74-87-31.0 1
2-Chlorotoluene ND ug/L 02/17/20 18:26 95-49-80.50 1
4-Chlorotoluene ND ug/L 02/17/20 18:26 106-43-40.50 1
1,2-Dibromo-3-chloropropane ND ug/L 02/17/20 18:26 96-12-81.0 1
Dibromochloromethane ND ug/L 02/17/20 18:26 124-48-10.50 1
1,2-Dibromoethane (EDB)ND ug/L 02/17/20 18:26 106-93-40.50 1
Dibromomethane ND ug/L 02/17/20 18:26 74-95-30.50 1
1,2-Dichlorobenzene ND ug/L 02/17/20 18:26 95-50-10.50 1
1,3-Dichlorobenzene ND ug/L 02/17/20 18:26 541-73-10.50 1
1,4-Dichlorobenzene ND ug/L 02/17/20 18:26 106-46-70.50 1
Dichlorodifluoromethane ND ug/L 02/17/20 18:26 75-71-80.50 1
1,1-Dichloroethane ND ug/L 02/17/20 18:26 75-34-30.50 1
1,2-Dichloroethane ND ug/L 02/17/20 18:26 107-06-20.50 1
1,1-Dichloroethene ND ug/L 02/17/20 18:26 75-35-40.50 1
cis-1,2-Dichloroethene ND ug/L 02/17/20 18:26 156-59-20.50 1
trans-1,2-Dichloroethene ND ug/L 02/17/20 18:26 156-60-50.50 1
1,2-Dichloropropane ND ug/L 02/17/20 18:26 78-87-50.50 1
1,3-Dichloropropane ND ug/L 02/17/20 18:26 142-28-90.50 1
2,2-Dichloropropane ND ug/L 02/17/20 18:26 594-20-70.50 1
1,1-Dichloropropene ND ug/L 02/17/20 18:26 563-58-60.50 1
cis-1,3-Dichloropropene ND ug/L 02/17/20 18:26 10061-01-50.50 1
trans-1,3-Dichloropropene ND ug/L 02/17/20 18:26 10061-02-60.50 1
Diisopropyl ether ND ug/L 02/17/20 18:26 108-20-30.50 1
Ethylbenzene ND ug/L 02/17/20 18:26 100-41-40.50 1
Hexachloro-1,3-butadiene ND ug/L 02/17/20 18:26 87-68-32.0 1
Isopropylbenzene (Cumene)ND ug/L 02/17/20 18:26 98-82-80.50 1
Methylene Chloride ND ug/L 02/17/20 18:26 75-09-22.0 1
Methyl-tert-butyl ether ND ug/L 02/17/20 18:26 1634-04-40.50 1
Naphthalene ND ug/L 02/17/20 18:26 91-20-32.0 1
n-Propylbenzene ND ug/L 02/17/20 18:26 103-65-10.50 1
Styrene ND ug/L 02/17/20 18:26 100-42-50.50 1
1,1,1,2-Tetrachloroethane ND ug/L 02/17/20 18:26 630-20-60.50 1
1,1,2,2-Tetrachloroethane ND ug/L 02/17/20 18:26 79-34-50.50 1
Tetrachloroethene ND ug/L 02/17/20 18:26 127-18-40.50 1
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 02/18/2020 03:35 PM
Pace Analytical Services, LLC
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Huntersville, NC 28078
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Page 8 of 48
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92464598
Former Potter Oil
Sample:MW-PO Lab ID:92464598003 Collected:02/10/20 11:31 Received:02/11/20 09:35 Matrix:Water
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: SM 6200B6200B MSV
Toluene ND ug/L 02/17/20 18:26 108-88-30.50 1
1,2,3-Trichlorobenzene ND ug/L 02/17/20 18:26 87-61-62.0 1
1,2,4-Trichlorobenzene ND ug/L 02/17/20 18:26 120-82-12.0 1
1,1,1-Trichloroethane ND ug/L 02/17/20 18:26 71-55-60.50 1
1,1,2-Trichloroethane ND ug/L 02/17/20 18:26 79-00-50.50 1
Trichloroethene ND ug/L 02/17/20 18:26 79-01-60.50 1
Trichlorofluoromethane ND ug/L 02/17/20 18:26 75-69-41.0 1
1,2,3-Trichloropropane ND ug/L 02/17/20 18:26 96-18-40.50 1
1,2,4-Trimethylbenzene ND ug/L 02/17/20 18:26 95-63-60.50 1
1,3,5-Trimethylbenzene ND ug/L 02/17/20 18:26 108-67-80.50 1
Vinyl chloride ND ug/L 02/17/20 18:26 75-01-41.0 1
m&p-Xylene ND ug/L 02/17/20 18:26 179601-23-11.0 1
o-Xylene ND ug/L 02/17/20 18:26 95-47-60.50 1
Surrogates
1,2-Dichloroethane-d4 (S)102 %02/17/20 18:26 17060-07-070-130 1
4-Bromofluorobenzene (S)99 %02/17/20 18:26 460-00-470-130 1
Toluene-d8 (S)100 %02/17/20 18:26 2037-26-570-130 1
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 02/18/2020 03:35 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 9 of 48
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92464598
Former Potter Oil
Sample:MW-5 Lab ID:92464598004 Collected:02/10/20 14:03 Received:02/11/20 09:35 Matrix:Water
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: SM 6200B6200B MSV
Benzene ND ug/L 02/18/20 10:16 71-43-20.50 1
Bromobenzene ND ug/L 02/18/20 10:16 108-86-10.50 1
Bromochloromethane ND ug/L 02/18/20 10:16 74-97-50.50 1
Bromodichloromethane ND ug/L 02/18/20 10:16 75-27-40.50 1
Bromoform ND ug/L 02/18/20 10:16 75-25-20.50 1
Bromomethane ND ug/L 02/18/20 10:16 74-83-95.0 1
n-Butylbenzene ND ug/L 02/18/20 10:16 104-51-80.50 1
sec-Butylbenzene ND ug/L 02/18/20 10:16 135-98-80.50 1
tert-Butylbenzene ND ug/L 02/18/20 10:16 98-06-60.50 1
Carbon tetrachloride ND ug/L 02/18/20 10:16 56-23-50.50 1
Chlorobenzene ND ug/L 02/18/20 10:16 108-90-70.50 1
Chloroethane ND ug/L 02/18/20 10:16 75-00-31.0 1
Chloroform ND ug/L 02/18/20 10:16 67-66-30.50 1
Chloromethane ND ug/L 02/18/20 10:16 74-87-31.0 1
2-Chlorotoluene ND ug/L 02/18/20 10:16 95-49-80.50 1
4-Chlorotoluene ND ug/L 02/18/20 10:16 106-43-40.50 1
1,2-Dibromo-3-chloropropane ND ug/L 02/18/20 10:16 96-12-81.0 1
Dibromochloromethane ND ug/L 02/18/20 10:16 124-48-10.50 1
1,2-Dibromoethane (EDB)ND ug/L 02/18/20 10:16 106-93-40.50 1
Dibromomethane ND ug/L 02/18/20 10:16 74-95-30.50 1
1,2-Dichlorobenzene ND ug/L 02/18/20 10:16 95-50-10.50 1
1,3-Dichlorobenzene ND ug/L 02/18/20 10:16 541-73-10.50 1
1,4-Dichlorobenzene ND ug/L 02/18/20 10:16 106-46-70.50 1
Dichlorodifluoromethane ND ug/L 02/18/20 10:16 75-71-80.50 1
1,1-Dichloroethane ND ug/L 02/18/20 10:16 75-34-30.50 1
1,2-Dichloroethane ND ug/L 02/18/20 10:16 107-06-20.50 1
1,1-Dichloroethene ND ug/L 02/18/20 10:16 75-35-40.50 1
cis-1,2-Dichloroethene ND ug/L 02/18/20 10:16 156-59-20.50 1
trans-1,2-Dichloroethene ND ug/L 02/18/20 10:16 156-60-50.50 1
1,2-Dichloropropane ND ug/L 02/18/20 10:16 78-87-50.50 1
1,3-Dichloropropane ND ug/L 02/18/20 10:16 142-28-90.50 1
2,2-Dichloropropane ND ug/L 02/18/20 10:16 594-20-70.50 1
1,1-Dichloropropene ND ug/L 02/18/20 10:16 563-58-60.50 1
cis-1,3-Dichloropropene ND ug/L 02/18/20 10:16 10061-01-50.50 1
trans-1,3-Dichloropropene ND ug/L 02/18/20 10:16 10061-02-60.50 1
Diisopropyl ether ND ug/L 02/18/20 10:16 108-20-30.50 1
Ethylbenzene ND ug/L 02/18/20 10:16 100-41-40.50 1
Hexachloro-1,3-butadiene ND ug/L 02/18/20 10:16 87-68-32.0 1
Isopropylbenzene (Cumene)ND ug/L 02/18/20 10:16 98-82-80.50 1
Methylene Chloride ND ug/L 02/18/20 10:16 75-09-22.0 1
Methyl-tert-butyl ether ND ug/L 02/18/20 10:16 1634-04-40.50 1
Naphthalene ND ug/L 02/18/20 10:16 91-20-32.0 1
n-Propylbenzene ND ug/L 02/18/20 10:16 103-65-10.50 1
Styrene ND ug/L 02/18/20 10:16 100-42-50.50 1
1,1,1,2-Tetrachloroethane ND ug/L 02/18/20 10:16 630-20-60.50 1
1,1,2,2-Tetrachloroethane ND ug/L 02/18/20 10:16 79-34-50.50 1
Tetrachloroethene ND ug/L 02/18/20 10:16 127-18-40.50 1
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 02/18/2020 03:35 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 10 of 48
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92464598
Former Potter Oil
Sample:MW-5 Lab ID:92464598004 Collected:02/10/20 14:03 Received:02/11/20 09:35 Matrix:Water
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: SM 6200B6200B MSV
Toluene ND ug/L 02/18/20 10:16 108-88-30.50 1
1,2,3-Trichlorobenzene ND ug/L 02/18/20 10:16 87-61-62.0 1
1,2,4-Trichlorobenzene ND ug/L 02/18/20 10:16 120-82-12.0 1
1,1,1-Trichloroethane ND ug/L 02/18/20 10:16 71-55-60.50 1
1,1,2-Trichloroethane ND ug/L 02/18/20 10:16 79-00-50.50 1
Trichloroethene ND ug/L 02/18/20 10:16 79-01-60.50 1
Trichlorofluoromethane ND ug/L 02/18/20 10:16 75-69-41.0 1
1,2,3-Trichloropropane ND ug/L 02/18/20 10:16 96-18-40.50 1
1,2,4-Trimethylbenzene ND ug/L 02/18/20 10:16 95-63-60.50 1
1,3,5-Trimethylbenzene ND ug/L 02/18/20 10:16 108-67-80.50 1
Vinyl chloride ND ug/L 02/18/20 10:16 75-01-41.0 1
m&p-Xylene ND ug/L 02/18/20 10:16 179601-23-11.0 1
o-Xylene ND ug/L 02/18/20 10:16 95-47-60.50 1
Surrogates
1,2-Dichloroethane-d4 (S)101 %02/18/20 10:16 17060-07-070-130 1
4-Bromofluorobenzene (S)99 %02/18/20 10:16 460-00-470-130 1
Toluene-d8 (S)101 %02/18/20 10:16 2037-26-570-130 1
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 02/18/2020 03:35 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 11 of 48
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92464598
Former Potter Oil
Sample:MW-6 Lab ID:92464598005 Collected:02/10/20 13:47 Received:02/11/20 09:35 Matrix:Water
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: SM 6200B6200B MSV
Benzene ND ug/L 02/18/20 10:34 71-43-20.50 1
Bromobenzene ND ug/L 02/18/20 10:34 108-86-10.50 1
Bromochloromethane ND ug/L 02/18/20 10:34 74-97-50.50 1
Bromodichloromethane ND ug/L 02/18/20 10:34 75-27-40.50 1
Bromoform ND ug/L 02/18/20 10:34 75-25-20.50 1
Bromomethane ND ug/L 02/18/20 10:34 74-83-95.0 1
n-Butylbenzene ND ug/L 02/18/20 10:34 104-51-80.50 1
sec-Butylbenzene ND ug/L 02/18/20 10:34 135-98-80.50 1
tert-Butylbenzene ND ug/L 02/18/20 10:34 98-06-60.50 1
Carbon tetrachloride ND ug/L 02/18/20 10:34 56-23-50.50 1
Chlorobenzene ND ug/L 02/18/20 10:34 108-90-70.50 1
Chloroethane ND ug/L 02/18/20 10:34 75-00-31.0 1
Chloroform ND ug/L 02/18/20 10:34 67-66-30.50 1
Chloromethane ND ug/L 02/18/20 10:34 74-87-31.0 1
2-Chlorotoluene ND ug/L 02/18/20 10:34 95-49-80.50 1
4-Chlorotoluene ND ug/L 02/18/20 10:34 106-43-40.50 1
1,2-Dibromo-3-chloropropane ND ug/L 02/18/20 10:34 96-12-81.0 1
Dibromochloromethane ND ug/L 02/18/20 10:34 124-48-10.50 1
1,2-Dibromoethane (EDB)ND ug/L 02/18/20 10:34 106-93-40.50 1
Dibromomethane ND ug/L 02/18/20 10:34 74-95-30.50 1
1,2-Dichlorobenzene ND ug/L 02/18/20 10:34 95-50-10.50 1
1,3-Dichlorobenzene ND ug/L 02/18/20 10:34 541-73-10.50 1
1,4-Dichlorobenzene ND ug/L 02/18/20 10:34 106-46-70.50 1
Dichlorodifluoromethane ND ug/L 02/18/20 10:34 75-71-80.50 1
1,1-Dichloroethane ND ug/L 02/18/20 10:34 75-34-30.50 1
1,2-Dichloroethane ND ug/L 02/18/20 10:34 107-06-20.50 1
1,1-Dichloroethene ND ug/L 02/18/20 10:34 75-35-40.50 1
cis-1,2-Dichloroethene ND ug/L 02/18/20 10:34 156-59-20.50 1
trans-1,2-Dichloroethene ND ug/L 02/18/20 10:34 156-60-50.50 1
1,2-Dichloropropane ND ug/L 02/18/20 10:34 78-87-50.50 1
1,3-Dichloropropane ND ug/L 02/18/20 10:34 142-28-90.50 1
2,2-Dichloropropane ND ug/L 02/18/20 10:34 594-20-70.50 1
1,1-Dichloropropene ND ug/L 02/18/20 10:34 563-58-60.50 1
cis-1,3-Dichloropropene ND ug/L 02/18/20 10:34 10061-01-50.50 1
trans-1,3-Dichloropropene ND ug/L 02/18/20 10:34 10061-02-60.50 1
Diisopropyl ether ND ug/L 02/18/20 10:34 108-20-30.50 1
Ethylbenzene 1.5 ug/L 02/18/20 10:34 100-41-40.50 1
Hexachloro-1,3-butadiene ND ug/L 02/18/20 10:34 87-68-32.0 1
Isopropylbenzene (Cumene)ND ug/L 02/18/20 10:34 98-82-80.50 1
Methylene Chloride ND ug/L 02/18/20 10:34 75-09-22.0 1
Methyl-tert-butyl ether ND ug/L 02/18/20 10:34 1634-04-40.50 1
Naphthalene ND ug/L 02/18/20 10:34 91-20-32.0 1
n-Propylbenzene ND ug/L 02/18/20 10:34 103-65-10.50 1
Styrene ND ug/L 02/18/20 10:34 100-42-50.50 1
1,1,1,2-Tetrachloroethane ND ug/L 02/18/20 10:34 630-20-60.50 1
1,1,2,2-Tetrachloroethane ND ug/L 02/18/20 10:34 79-34-50.50 1
Tetrachloroethene ND ug/L 02/18/20 10:34 127-18-40.50 1
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 02/18/2020 03:35 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 12 of 48
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92464598
Former Potter Oil
Sample:MW-6 Lab ID:92464598005 Collected:02/10/20 13:47 Received:02/11/20 09:35 Matrix:Water
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: SM 6200B6200B MSV
Toluene ND ug/L 02/18/20 10:34 108-88-30.50 1
1,2,3-Trichlorobenzene ND ug/L 02/18/20 10:34 87-61-62.0 1
1,2,4-Trichlorobenzene ND ug/L 02/18/20 10:34 120-82-12.0 1
1,1,1-Trichloroethane ND ug/L 02/18/20 10:34 71-55-60.50 1
1,1,2-Trichloroethane ND ug/L 02/18/20 10:34 79-00-50.50 1
Trichloroethene ND ug/L 02/18/20 10:34 79-01-60.50 1
Trichlorofluoromethane ND ug/L 02/18/20 10:34 75-69-41.0 1
1,2,3-Trichloropropane ND ug/L 02/18/20 10:34 96-18-40.50 1
1,2,4-Trimethylbenzene 3.9 ug/L 02/18/20 10:34 95-63-60.50 1
1,3,5-Trimethylbenzene ND ug/L 02/18/20 10:34 108-67-80.50 1
Vinyl chloride ND ug/L 02/18/20 10:34 75-01-41.0 1
m&p-Xylene ND ug/L 02/18/20 10:34 179601-23-11.0 1
o-Xylene ND ug/L 02/18/20 10:34 95-47-60.50 1
Surrogates
1,2-Dichloroethane-d4 (S)99 %02/18/20 10:34 17060-07-070-130 1
4-Bromofluorobenzene (S)99 %02/18/20 10:34 460-00-470-130 1
Toluene-d8 (S)103 %02/18/20 10:34 2037-26-570-130 1
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 02/18/2020 03:35 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 13 of 48
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92464598
Former Potter Oil
Sample:MW-9R Lab ID:92464598006 Collected:02/10/20 12:35 Received:02/11/20 09:35 Matrix:Water
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: SM 6200B6200B MSV
Benzene 3170 ug/L 02/18/20 10:31 71-43-212.5 25
Bromobenzene ND ug/L 02/18/20 10:31 108-86-112.5 25
Bromochloromethane ND ug/L 02/18/20 10:31 74-97-512.5 25
Bromodichloromethane ND ug/L 02/18/20 10:31 75-27-412.5 25
Bromoform ND ug/L 02/18/20 10:31 75-25-212.5 25
Bromomethane ND ug/L 02/18/20 10:31 74-83-912525
n-Butylbenzene ND ug/L 02/18/20 10:31 104-51-812.5 25
sec-Butylbenzene ND ug/L 02/18/20 10:31 135-98-812.5 25
tert-Butylbenzene ND ug/L 02/18/20 10:31 98-06-612.5 25
Carbon tetrachloride ND ug/L 02/18/20 10:31 56-23-512.5 25
Chlorobenzene ND ug/L 02/18/20 10:31 108-90-712.5 25
Chloroethane ND ug/L 02/18/20 10:31 75-00-325.0 25
Chloroform ND ug/L 02/18/20 10:31 67-66-312.5 25
Chloromethane ND ug/L 02/18/20 10:31 74-87-325.0 25
2-Chlorotoluene ND ug/L 02/18/20 10:31 95-49-812.5 25
4-Chlorotoluene ND ug/L 02/18/20 10:31 106-43-412.5 25
1,2-Dibromo-3-chloropropane ND ug/L 02/18/20 10:31 96-12-825.0 25
Dibromochloromethane ND ug/L 02/18/20 10:31 124-48-112.5 25
1,2-Dibromoethane (EDB)ND ug/L 02/18/20 10:31 106-93-412.5 25
Dibromomethane ND ug/L 02/18/20 10:31 74-95-312.5 25
1,2-Dichlorobenzene ND ug/L 02/18/20 10:31 95-50-112.5 25
1,3-Dichlorobenzene ND ug/L 02/18/20 10:31 541-73-112.5 25
1,4-Dichlorobenzene ND ug/L 02/18/20 10:31 106-46-712.5 25
Dichlorodifluoromethane ND ug/L 02/18/20 10:31 75-71-812.5 25
1,1-Dichloroethane ND ug/L 02/18/20 10:31 75-34-312.5 25
1,2-Dichloroethane ND ug/L 02/18/20 10:31 107-06-212.5 25
1,1-Dichloroethene ND ug/L 02/18/20 10:31 75-35-412.5 25
cis-1,2-Dichloroethene ND ug/L 02/18/20 10:31 156-59-212.5 25
trans-1,2-Dichloroethene ND ug/L 02/18/20 10:31 156-60-512.5 25
1,2-Dichloropropane ND ug/L 02/18/20 10:31 78-87-512.5 25
1,3-Dichloropropane ND ug/L 02/18/20 10:31 142-28-912.5 25
2,2-Dichloropropane ND ug/L 02/18/20 10:31 594-20-712.5 25
1,1-Dichloropropene ND ug/L 02/18/20 10:31 563-58-612.5 25
cis-1,3-Dichloropropene ND ug/L 02/18/20 10:31 10061-01-512.5 25
trans-1,3-Dichloropropene ND ug/L 02/18/20 10:31 10061-02-612.5 25
Diisopropyl ether ND ug/L 02/18/20 10:31 108-20-312.5 25
Ethylbenzene 220 ug/L 02/18/20 10:31 100-41-412.5 25
Hexachloro-1,3-butadiene ND ug/L 02/18/20 10:31 87-68-350.0 25
Isopropylbenzene (Cumene)29.5 ug/L 02/18/20 10:31 98-82-812.5 25
Methylene Chloride ND ug/L 02/18/20 10:31 75-09-250.0 25
Methyl-tert-butyl ether 698 ug/L 02/18/20 10:31 1634-04-412.5 25
Naphthalene 332 ug/L 02/18/20 10:31 91-20-350.0 25
n-Propylbenzene 69.1 ug/L 02/18/20 10:31 103-65-112.5 25
Styrene ND ug/L 02/18/20 10:31 100-42-512.5 25
1,1,1,2-Tetrachloroethane ND ug/L 02/18/20 10:31 630-20-612.5 25
1,1,2,2-Tetrachloroethane ND ug/L 02/18/20 10:31 79-34-512.5 25
Tetrachloroethene ND ug/L 02/18/20 10:31 127-18-412.5 25
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 02/18/2020 03:35 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 14 of 48
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92464598
Former Potter Oil
Sample:MW-9R Lab ID:92464598006 Collected:02/10/20 12:35 Received:02/11/20 09:35 Matrix:Water
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: SM 6200B6200B MSV
Toluene 91.5 ug/L 02/18/20 10:31 108-88-312.5 25
1,2,3-Trichlorobenzene ND ug/L 02/18/20 10:31 87-61-650.0 25
1,2,4-Trichlorobenzene ND ug/L 02/18/20 10:31 120-82-150.0 25
1,1,1-Trichloroethane ND ug/L 02/18/20 10:31 71-55-612.5 25
1,1,2-Trichloroethane ND ug/L 02/18/20 10:31 79-00-512.5 25
Trichloroethene ND ug/L 02/18/20 10:31 79-01-612.5 25
Trichlorofluoromethane ND ug/L 02/18/20 10:31 75-69-425.0 25
1,2,3-Trichloropropane ND ug/L 02/18/20 10:31 96-18-412.5 25
1,2,4-Trimethylbenzene 158 ug/L 02/18/20 10:31 95-63-612.5 25
1,3,5-Trimethylbenzene 51.5 ug/L 02/18/20 10:31 108-67-812.5 25
Vinyl chloride ND ug/L 02/18/20 10:31 75-01-425.0 25
m&p-Xylene 361 ug/L 02/18/20 10:31 179601-23-125.0 25
o-Xylene 33.2 ug/L 02/18/20 10:31 95-47-612.5 25
Surrogates
1,2-Dichloroethane-d4 (S)103 %02/18/20 10:31 17060-07-070-130 25
4-Bromofluorobenzene (S)102 %02/18/20 10:31 460-00-470-130 25
Toluene-d8 (S)106 %02/18/20 10:31 2037-26-570-130 25
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 02/18/2020 03:35 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 15 of 48
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92464598
Former Potter Oil
Sample:MW-10 Lab ID:92464598007 Collected:02/10/20 13:15 Received:02/11/20 09:35 Matrix:Water
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: SM 6200B6200B MSV
Benzene 418 ug/L 02/18/20 13:33 71-43-25.0 10
Bromobenzene ND ug/L 02/18/20 13:33 108-86-15.0 10
Bromochloromethane ND ug/L 02/18/20 13:33 74-97-55.0 10
Bromodichloromethane ND ug/L 02/18/20 13:33 75-27-45.0 10
Bromoform ND ug/L 02/18/20 13:33 75-25-25.0 10
Bromomethane ND ug/L 02/18/20 13:33 74-83-9 M150.0 10
n-Butylbenzene 47.8 ug/L 02/18/20 13:33 104-51-85.0 10
sec-Butylbenzene ND ug/L 02/18/20 13:33 135-98-85.0 10
tert-Butylbenzene ND ug/L 02/18/20 13:33 98-06-65.0 10
Carbon tetrachloride ND ug/L 02/18/20 13:33 56-23-55.0 10
Chlorobenzene ND ug/L 02/18/20 13:33 108-90-75.0 10
Chloroethane ND ug/L 02/18/20 13:33 75-00-310.0 10
Chloroform ND ug/L 02/18/20 13:33 67-66-35.0 10
Chloromethane ND ug/L 02/18/20 13:33 74-87-310.0 10
2-Chlorotoluene ND ug/L 02/18/20 13:33 95-49-85.0 10
4-Chlorotoluene ND ug/L 02/18/20 13:33 106-43-45.0 10
1,2-Dibromo-3-chloropropane ND ug/L 02/18/20 13:33 96-12-810.0 10
Dibromochloromethane ND ug/L 02/18/20 13:33 124-48-15.0 10
1,2-Dibromoethane (EDB)ND ug/L 02/18/20 13:33 106-93-45.0 10
Dibromomethane ND ug/L 02/18/20 13:33 74-95-35.0 10
1,2-Dichlorobenzene ND ug/L 02/18/20 13:33 95-50-15.0 10
1,3-Dichlorobenzene ND ug/L 02/18/20 13:33 541-73-15.0 10
1,4-Dichlorobenzene ND ug/L 02/18/20 13:33 106-46-75.0 10
Dichlorodifluoromethane ND ug/L 02/18/20 13:33 75-71-85.0 10
1,1-Dichloroethane ND ug/L 02/18/20 13:33 75-34-35.0 10
1,2-Dichloroethane ND ug/L 02/18/20 13:33 107-06-25.0 10
1,1-Dichloroethene ND ug/L 02/18/20 13:33 75-35-45.0 10
cis-1,2-Dichloroethene ND ug/L 02/18/20 13:33 156-59-25.0 10
trans-1,2-Dichloroethene ND ug/L 02/18/20 13:33 156-60-55.0 10
1,2-Dichloropropane ND ug/L 02/18/20 13:33 78-87-55.0 10
1,3-Dichloropropane ND ug/L 02/18/20 13:33 142-28-95.0 10
2,2-Dichloropropane ND ug/L 02/18/20 13:33 594-20-75.0 10
1,1-Dichloropropene ND ug/L 02/18/20 13:33 563-58-65.0 10
cis-1,3-Dichloropropene ND ug/L 02/18/20 13:33 10061-01-55.0 10
trans-1,3-Dichloropropene ND ug/L 02/18/20 13:33 10061-02-65.0 10
Diisopropyl ether ND ug/L 02/18/20 13:33 108-20-35.0 10
Ethylbenzene 307 ug/L 02/18/20 13:33 100-41-45.0 10
Hexachloro-1,3-butadiene ND ug/L 02/18/20 13:33 87-68-320.0 10
Isopropylbenzene (Cumene)21.0 ug/L 02/18/20 13:33 98-82-85.0 10
Methylene Chloride ND ug/L 02/18/20 13:33 75-09-220.0 10
Methyl-tert-butyl ether ND ug/L 02/18/20 13:33 1634-04-45.0 10
Naphthalene 275 ug/L 02/18/20 13:33 91-20-320.0 10
n-Propylbenzene 66.9 ug/L 02/18/20 13:33 103-65-15.0 10
Styrene ND ug/L 02/18/20 13:33 100-42-55.0 10
1,1,1,2-Tetrachloroethane ND ug/L 02/18/20 13:33 630-20-65.0 10
1,1,2,2-Tetrachloroethane ND ug/L 02/18/20 13:33 79-34-55.0 10
Tetrachloroethene ND ug/L 02/18/20 13:33 127-18-45.0 10
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 02/18/2020 03:35 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
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Page 16 of 48
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92464598
Former Potter Oil
Sample:MW-10 Lab ID:92464598007 Collected:02/10/20 13:15 Received:02/11/20 09:35 Matrix:Water
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: SM 6200B6200B MSV
Toluene 908 ug/L 02/18/20 13:33 108-88-35.0 10
1,2,3-Trichlorobenzene ND ug/L 02/18/20 13:33 87-61-620.0 10
1,2,4-Trichlorobenzene ND ug/L 02/18/20 13:33 120-82-120.0 10
1,1,1-Trichloroethane ND ug/L 02/18/20 13:33 71-55-65.0 10
1,1,2-Trichloroethane ND ug/L 02/18/20 13:33 79-00-55.0 10
Trichloroethene ND ug/L 02/18/20 13:33 79-01-65.0 10
Trichlorofluoromethane ND ug/L 02/18/20 13:33 75-69-410.0 10
1,2,3-Trichloropropane ND ug/L 02/18/20 13:33 96-18-45.0 10
1,2,4-Trimethylbenzene 938 ug/L 02/18/20 13:33 95-63-6 M15.0 10
1,3,5-Trimethylbenzene 297 ug/L 02/18/20 13:33 108-67-85.0 10
Vinyl chloride ND ug/L 02/18/20 13:33 75-01-410.0 10
m&p-Xylene 1590 ug/L 02/18/20 13:33 179601-23-110.0 10
o-Xylene 720 ug/L 02/18/20 13:33 95-47-65.0 10
Surrogates
1,2-Dichloroethane-d4 (S)96 %02/18/20 13:33 17060-07-070-130 10
4-Bromofluorobenzene (S)99 %02/18/20 13:33 460-00-470-130 10
Toluene-d8 (S)100 %02/18/20 13:33 2037-26-570-130 10
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 02/18/2020 03:35 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 17 of 48
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92464598
Former Potter Oil
Sample:MW-19 Lab ID:92464598008 Collected:02/10/20 14:10 Received:02/11/20 09:35 Matrix:Water
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: SM 6200B6200B MSV
Benzene 284 ug/L 02/18/20 12:20 71-43-21.0 2
Bromobenzene ND ug/L 02/18/20 12:20 108-86-11.0 2
Bromochloromethane ND ug/L 02/18/20 12:20 74-97-51.0 2
Bromodichloromethane ND ug/L 02/18/20 12:20 75-27-41.0 2
Bromoform ND ug/L 02/18/20 12:20 75-25-21.0 2
Bromomethane ND ug/L 02/18/20 12:20 74-83-910.0 2
n-Butylbenzene ND ug/L 02/18/20 12:20 104-51-81.0 2
sec-Butylbenzene 4.5 ug/L 02/18/20 12:20 135-98-81.0 2
tert-Butylbenzene ND ug/L 02/18/20 12:20 98-06-61.0 2
Carbon tetrachloride ND ug/L 02/18/20 12:20 56-23-51.0 2
Chlorobenzene ND ug/L 02/18/20 12:20 108-90-71.0 2
Chloroethane ND ug/L 02/18/20 12:20 75-00-32.0 2
Chloroform ND ug/L 02/18/20 12:20 67-66-31.0 2
Chloromethane ND ug/L 02/18/20 12:20 74-87-32.0 2
2-Chlorotoluene ND ug/L 02/18/20 12:20 95-49-81.0 2
4-Chlorotoluene ND ug/L 02/18/20 12:20 106-43-41.0 2
1,2-Dibromo-3-chloropropane ND ug/L 02/18/20 12:20 96-12-82.0 2
Dibromochloromethane ND ug/L 02/18/20 12:20 124-48-11.0 2
1,2-Dibromoethane (EDB)ND ug/L 02/18/20 12:20 106-93-41.0 2
Dibromomethane ND ug/L 02/18/20 12:20 74-95-31.0 2
1,2-Dichlorobenzene ND ug/L 02/18/20 12:20 95-50-11.0 2
1,3-Dichlorobenzene ND ug/L 02/18/20 12:20 541-73-11.0 2
1,4-Dichlorobenzene ND ug/L 02/18/20 12:20 106-46-71.0 2
Dichlorodifluoromethane ND ug/L 02/18/20 12:20 75-71-81.0 2
1,1-Dichloroethane ND ug/L 02/18/20 12:20 75-34-31.0 2
1,2-Dichloroethane ND ug/L 02/18/20 12:20 107-06-21.0 2
1,1-Dichloroethene ND ug/L 02/18/20 12:20 75-35-41.0 2
cis-1,2-Dichloroethene ND ug/L 02/18/20 12:20 156-59-21.0 2
trans-1,2-Dichloroethene ND ug/L 02/18/20 12:20 156-60-51.0 2
1,2-Dichloropropane ND ug/L 02/18/20 12:20 78-87-51.0 2
1,3-Dichloropropane ND ug/L 02/18/20 12:20 142-28-91.0 2
2,2-Dichloropropane ND ug/L 02/18/20 12:20 594-20-71.0 2
1,1-Dichloropropene ND ug/L 02/18/20 12:20 563-58-61.0 2
cis-1,3-Dichloropropene ND ug/L 02/18/20 12:20 10061-01-51.0 2
trans-1,3-Dichloropropene ND ug/L 02/18/20 12:20 10061-02-61.0 2
Diisopropyl ether ND ug/L 02/18/20 12:20 108-20-31.0 2
Ethylbenzene 46.1 ug/L 02/18/20 12:20 100-41-41.0 2
Hexachloro-1,3-butadiene ND ug/L 02/18/20 12:20 87-68-34.0 2
Isopropylbenzene (Cumene)8.4 ug/L 02/18/20 12:20 98-82-81.0 2
Methylene Chloride ND ug/L 02/18/20 12:20 75-09-24.0 2
Methyl-tert-butyl ether 11.1 ug/L 02/18/20 12:20 1634-04-41.0 2
Naphthalene 56.7 ug/L 02/18/20 12:20 91-20-34.0 2
n-Propylbenzene 5.5 ug/L 02/18/20 12:20 103-65-11.0 2
Styrene ND ug/L 02/18/20 12:20 100-42-51.0 2
1,1,1,2-Tetrachloroethane ND ug/L 02/18/20 12:20 630-20-61.0 2
1,1,2,2-Tetrachloroethane ND ug/L 02/18/20 12:20 79-34-51.0 2
Tetrachloroethene ND ug/L 02/18/20 12:20 127-18-41.0 2
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 02/18/2020 03:35 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 18 of 48
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92464598
Former Potter Oil
Sample:MW-19 Lab ID:92464598008 Collected:02/10/20 14:10 Received:02/11/20 09:35 Matrix:Water
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: SM 6200B6200B MSV
Toluene 52.3 ug/L 02/18/20 12:20 108-88-31.0 2
1,2,3-Trichlorobenzene ND ug/L 02/18/20 12:20 87-61-64.0 2
1,2,4-Trichlorobenzene ND ug/L 02/18/20 12:20 120-82-14.0 2
1,1,1-Trichloroethane ND ug/L 02/18/20 12:20 71-55-61.0 2
1,1,2-Trichloroethane ND ug/L 02/18/20 12:20 79-00-51.0 2
Trichloroethene ND ug/L 02/18/20 12:20 79-01-61.0 2
Trichlorofluoromethane ND ug/L 02/18/20 12:20 75-69-42.0 2
1,2,3-Trichloropropane ND ug/L 02/18/20 12:20 96-18-41.0 2
1,2,4-Trimethylbenzene ND ug/L 02/18/20 12:20 95-63-61.0 2
1,3,5-Trimethylbenzene ND ug/L 02/18/20 12:20 108-67-81.0 2
Vinyl chloride ND ug/L 02/18/20 12:20 75-01-42.0 2
m&p-Xylene 58.6 ug/L 02/18/20 12:20 179601-23-12.0 2
o-Xylene 12.7 ug/L 02/18/20 12:20 95-47-61.0 2
Surrogates
1,2-Dichloroethane-d4 (S)102 %02/18/20 12:20 17060-07-070-130 2
4-Bromofluorobenzene (S)100 %02/18/20 12:20 460-00-470-130 2
Toluene-d8 (S)101 %02/18/20 12:20 2037-26-570-130 2
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 02/18/2020 03:35 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 19 of 48
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92464598
Former Potter Oil
Sample:MW-23 Lab ID:92464598009 Collected:02/10/20 12:20 Received:02/11/20 09:35 Matrix:Water
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: SM 6200B6200B MSV
Benzene ND ug/L 02/17/20 18:44 71-43-20.50 1
Bromobenzene ND ug/L 02/17/20 18:44 108-86-10.50 1
Bromochloromethane ND ug/L 02/17/20 18:44 74-97-50.50 1
Bromodichloromethane ND ug/L 02/17/20 18:44 75-27-40.50 1
Bromoform ND ug/L 02/17/20 18:44 75-25-20.50 1
Bromomethane ND ug/L 02/17/20 18:44 74-83-95.0 1
n-Butylbenzene ND ug/L 02/17/20 18:44 104-51-80.50 1
sec-Butylbenzene ND ug/L 02/17/20 18:44 135-98-80.50 1
tert-Butylbenzene ND ug/L 02/17/20 18:44 98-06-60.50 1
Carbon tetrachloride ND ug/L 02/17/20 18:44 56-23-50.50 1
Chlorobenzene ND ug/L 02/17/20 18:44 108-90-70.50 1
Chloroethane ND ug/L 02/17/20 18:44 75-00-31.0 1
Chloroform ND ug/L 02/17/20 18:44 67-66-30.50 1
Chloromethane ND ug/L 02/17/20 18:44 74-87-31.0 1
2-Chlorotoluene ND ug/L 02/17/20 18:44 95-49-80.50 1
4-Chlorotoluene ND ug/L 02/17/20 18:44 106-43-40.50 1
1,2-Dibromo-3-chloropropane ND ug/L 02/17/20 18:44 96-12-81.0 1
Dibromochloromethane ND ug/L 02/17/20 18:44 124-48-10.50 1
1,2-Dibromoethane (EDB)ND ug/L 02/17/20 18:44 106-93-40.50 1
Dibromomethane ND ug/L 02/17/20 18:44 74-95-30.50 1
1,2-Dichlorobenzene ND ug/L 02/17/20 18:44 95-50-10.50 1
1,3-Dichlorobenzene ND ug/L 02/17/20 18:44 541-73-10.50 1
1,4-Dichlorobenzene ND ug/L 02/17/20 18:44 106-46-70.50 1
Dichlorodifluoromethane ND ug/L 02/17/20 18:44 75-71-80.50 1
1,1-Dichloroethane ND ug/L 02/17/20 18:44 75-34-30.50 1
1,2-Dichloroethane ND ug/L 02/17/20 18:44 107-06-20.50 1
1,1-Dichloroethene ND ug/L 02/17/20 18:44 75-35-40.50 1
cis-1,2-Dichloroethene ND ug/L 02/17/20 18:44 156-59-20.50 1
trans-1,2-Dichloroethene ND ug/L 02/17/20 18:44 156-60-50.50 1
1,2-Dichloropropane ND ug/L 02/17/20 18:44 78-87-50.50 1
1,3-Dichloropropane ND ug/L 02/17/20 18:44 142-28-90.50 1
2,2-Dichloropropane ND ug/L 02/17/20 18:44 594-20-70.50 1
1,1-Dichloropropene ND ug/L 02/17/20 18:44 563-58-60.50 1
cis-1,3-Dichloropropene ND ug/L 02/17/20 18:44 10061-01-50.50 1
trans-1,3-Dichloropropene ND ug/L 02/17/20 18:44 10061-02-60.50 1
Diisopropyl ether 1.2 ug/L 02/17/20 18:44 108-20-30.50 1
Ethylbenzene ND ug/L 02/17/20 18:44 100-41-40.50 1
Hexachloro-1,3-butadiene ND ug/L 02/17/20 18:44 87-68-32.0 1
Isopropylbenzene (Cumene)ND ug/L 02/17/20 18:44 98-82-80.50 1
Methylene Chloride ND ug/L 02/17/20 18:44 75-09-22.0 1
Methyl-tert-butyl ether 2.8 ug/L 02/17/20 18:44 1634-04-40.50 1
Naphthalene ND ug/L 02/17/20 18:44 91-20-32.0 1
n-Propylbenzene ND ug/L 02/17/20 18:44 103-65-10.50 1
Styrene ND ug/L 02/17/20 18:44 100-42-50.50 1
1,1,1,2-Tetrachloroethane ND ug/L 02/17/20 18:44 630-20-60.50 1
1,1,2,2-Tetrachloroethane ND ug/L 02/17/20 18:44 79-34-50.50 1
Tetrachloroethene ND ug/L 02/17/20 18:44 127-18-40.50 1
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 02/18/2020 03:35 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 20 of 48
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92464598
Former Potter Oil
Sample:MW-23 Lab ID:92464598009 Collected:02/10/20 12:20 Received:02/11/20 09:35 Matrix:Water
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: SM 6200B6200B MSV
Toluene ND ug/L 02/17/20 18:44 108-88-30.50 1
1,2,3-Trichlorobenzene ND ug/L 02/17/20 18:44 87-61-62.0 1
1,2,4-Trichlorobenzene ND ug/L 02/17/20 18:44 120-82-12.0 1
1,1,1-Trichloroethane ND ug/L 02/17/20 18:44 71-55-60.50 1
1,1,2-Trichloroethane ND ug/L 02/17/20 18:44 79-00-50.50 1
Trichloroethene ND ug/L 02/17/20 18:44 79-01-60.50 1
Trichlorofluoromethane ND ug/L 02/17/20 18:44 75-69-41.0 1
1,2,3-Trichloropropane ND ug/L 02/17/20 18:44 96-18-40.50 1
1,2,4-Trimethylbenzene ND ug/L 02/17/20 18:44 95-63-60.50 1
1,3,5-Trimethylbenzene ND ug/L 02/17/20 18:44 108-67-80.50 1
Vinyl chloride ND ug/L 02/17/20 18:44 75-01-41.0 1
m&p-Xylene ND ug/L 02/17/20 18:44 179601-23-11.0 1
o-Xylene ND ug/L 02/17/20 18:44 95-47-60.50 1
Surrogates
1,2-Dichloroethane-d4 (S)106 %02/17/20 18:44 17060-07-070-130 1
4-Bromofluorobenzene (S)98 %02/17/20 18:44 460-00-470-130 1
Toluene-d8 (S)103 %02/17/20 18:44 2037-26-570-130 1
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 02/18/2020 03:35 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 21 of 48
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92464598
Former Potter Oil
Sample:MW-24 Lab ID:92464598010 Collected:02/10/20 12:29 Received:02/11/20 09:35 Matrix:Water
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: SM 6200B6200B MSV
Benzene ND ug/L 02/17/20 19:02 71-43-20.50 1
Bromobenzene ND ug/L 02/17/20 19:02 108-86-10.50 1
Bromochloromethane ND ug/L 02/17/20 19:02 74-97-50.50 1
Bromodichloromethane ND ug/L 02/17/20 19:02 75-27-40.50 1
Bromoform ND ug/L 02/17/20 19:02 75-25-20.50 1
Bromomethane ND ug/L 02/17/20 19:02 74-83-95.0 1
n-Butylbenzene ND ug/L 02/17/20 19:02 104-51-80.50 1
sec-Butylbenzene 0.79 ug/L 02/17/20 19:02 135-98-80.50 1
tert-Butylbenzene ND ug/L 02/17/20 19:02 98-06-60.50 1
Carbon tetrachloride ND ug/L 02/17/20 19:02 56-23-50.50 1
Chlorobenzene ND ug/L 02/17/20 19:02 108-90-70.50 1
Chloroethane ND ug/L 02/17/20 19:02 75-00-31.0 1
Chloroform ND ug/L 02/17/20 19:02 67-66-30.50 1
Chloromethane ND ug/L 02/17/20 19:02 74-87-31.0 1
2-Chlorotoluene ND ug/L 02/17/20 19:02 95-49-80.50 1
4-Chlorotoluene ND ug/L 02/17/20 19:02 106-43-40.50 1
1,2-Dibromo-3-chloropropane ND ug/L 02/17/20 19:02 96-12-81.0 1
Dibromochloromethane ND ug/L 02/17/20 19:02 124-48-10.50 1
1,2-Dibromoethane (EDB)ND ug/L 02/17/20 19:02 106-93-40.50 1
Dibromomethane ND ug/L 02/17/20 19:02 74-95-30.50 1
1,2-Dichlorobenzene ND ug/L 02/17/20 19:02 95-50-10.50 1
1,3-Dichlorobenzene ND ug/L 02/17/20 19:02 541-73-10.50 1
1,4-Dichlorobenzene ND ug/L 02/17/20 19:02 106-46-70.50 1
Dichlorodifluoromethane ND ug/L 02/17/20 19:02 75-71-80.50 1
1,1-Dichloroethane ND ug/L 02/17/20 19:02 75-34-30.50 1
1,2-Dichloroethane ND ug/L 02/17/20 19:02 107-06-20.50 1
1,1-Dichloroethene ND ug/L 02/17/20 19:02 75-35-40.50 1
cis-1,2-Dichloroethene ND ug/L 02/17/20 19:02 156-59-20.50 1
trans-1,2-Dichloroethene ND ug/L 02/17/20 19:02 156-60-50.50 1
1,2-Dichloropropane ND ug/L 02/17/20 19:02 78-87-50.50 1
1,3-Dichloropropane ND ug/L 02/17/20 19:02 142-28-90.50 1
2,2-Dichloropropane ND ug/L 02/17/20 19:02 594-20-70.50 1
1,1-Dichloropropene ND ug/L 02/17/20 19:02 563-58-60.50 1
cis-1,3-Dichloropropene ND ug/L 02/17/20 19:02 10061-01-50.50 1
trans-1,3-Dichloropropene ND ug/L 02/17/20 19:02 10061-02-60.50 1
Diisopropyl ether 1.5 ug/L 02/17/20 19:02 108-20-30.50 1
Ethylbenzene ND ug/L 02/17/20 19:02 100-41-40.50 1
Hexachloro-1,3-butadiene ND ug/L 02/17/20 19:02 87-68-32.0 1
Isopropylbenzene (Cumene)2.3 ug/L 02/17/20 19:02 98-82-80.50 1
Methylene Chloride ND ug/L 02/17/20 19:02 75-09-22.0 1
Methyl-tert-butyl ether 3.5 ug/L 02/17/20 19:02 1634-04-40.50 1
Naphthalene ND ug/L 02/17/20 19:02 91-20-32.0 1
n-Propylbenzene 1.7 ug/L 02/17/20 19:02 103-65-10.50 1
Styrene ND ug/L 02/17/20 19:02 100-42-50.50 1
1,1,1,2-Tetrachloroethane ND ug/L 02/17/20 19:02 630-20-60.50 1
1,1,2,2-Tetrachloroethane ND ug/L 02/17/20 19:02 79-34-50.50 1
Tetrachloroethene ND ug/L 02/17/20 19:02 127-18-40.50 1
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 02/18/2020 03:35 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 22 of 48
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92464598
Former Potter Oil
Sample:MW-24 Lab ID:92464598010 Collected:02/10/20 12:29 Received:02/11/20 09:35 Matrix:Water
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: SM 6200B6200B MSV
Toluene ND ug/L 02/17/20 19:02 108-88-30.50 1
1,2,3-Trichlorobenzene ND ug/L 02/17/20 19:02 87-61-62.0 1
1,2,4-Trichlorobenzene ND ug/L 02/17/20 19:02 120-82-12.0 1
1,1,1-Trichloroethane ND ug/L 02/17/20 19:02 71-55-60.50 1
1,1,2-Trichloroethane ND ug/L 02/17/20 19:02 79-00-50.50 1
Trichloroethene ND ug/L 02/17/20 19:02 79-01-60.50 1
Trichlorofluoromethane ND ug/L 02/17/20 19:02 75-69-41.0 1
1,2,3-Trichloropropane ND ug/L 02/17/20 19:02 96-18-40.50 1
1,2,4-Trimethylbenzene ND ug/L 02/17/20 19:02 95-63-60.50 1
1,3,5-Trimethylbenzene ND ug/L 02/17/20 19:02 108-67-80.50 1
Vinyl chloride ND ug/L 02/17/20 19:02 75-01-41.0 1
m&p-Xylene ND ug/L 02/17/20 19:02 179601-23-11.0 1
o-Xylene ND ug/L 02/17/20 19:02 95-47-60.50 1
Surrogates
1,2-Dichloroethane-d4 (S)107 %02/17/20 19:02 17060-07-070-130 1
4-Bromofluorobenzene (S)99 %02/17/20 19:02 460-00-470-130 1
Toluene-d8 (S)100 %02/17/20 19:02 2037-26-570-130 1
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 02/18/2020 03:35 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 23 of 48
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92464598
Former Potter Oil
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
QC Batch:
QC Batch Method:
Analysis Method:
Analysis Description:
525496
SM 6200B
SM 6200B
6200B MSV
Associated Lab Samples:92464598003, 92464598009, 92464598010
Parameter Units
Blank
Result
Reporting
Limit Qualifiers
METHOD BLANK:2808745
Associated Lab Samples:92464598003, 92464598009, 92464598010
Matrix:Water
Analyzed
1,1,1,2-Tetrachloroethane ug/L ND 0.50 02/17/20 18:08
1,1,1-Trichloroethane ug/L ND 0.50 02/17/20 18:08
1,1,2,2-Tetrachloroethane ug/L ND 0.50 02/17/20 18:08
1,1,2-Trichloroethane ug/L ND 0.50 02/17/20 18:08
1,1-Dichloroethane ug/L ND 0.50 02/17/20 18:08
1,1-Dichloroethene ug/L ND 0.50 02/17/20 18:08
1,1-Dichloropropene ug/L ND 0.50 02/17/20 18:08
1,2,3-Trichlorobenzene ug/L ND 2.0 02/17/20 18:08
1,2,3-Trichloropropane ug/L ND 0.50 02/17/20 18:08
1,2,4-Trichlorobenzene ug/L ND 2.0 02/17/20 18:08
1,2,4-Trimethylbenzene ug/L ND 0.50 02/17/20 18:08
1,2-Dibromo-3-chloropropane ug/L ND 1.0 02/17/20 18:08
1,2-Dibromoethane (EDB)ug/L ND 0.50 02/17/20 18:08
1,2-Dichlorobenzene ug/L ND 0.50 02/17/20 18:08
1,2-Dichloroethane ug/L ND 0.50 02/17/20 18:08
1,2-Dichloropropane ug/L ND 0.50 02/17/20 18:08
1,3,5-Trimethylbenzene ug/L ND 0.50 02/17/20 18:08
1,3-Dichlorobenzene ug/L ND 0.50 02/17/20 18:08
1,3-Dichloropropane ug/L ND 0.50 02/17/20 18:08
1,4-Dichlorobenzene ug/L ND 0.50 02/17/20 18:08
2,2-Dichloropropane ug/L ND 0.50 02/17/20 18:08
2-Chlorotoluene ug/L ND 0.50 02/17/20 18:08
4-Chlorotoluene ug/L ND 0.50 02/17/20 18:08
Benzene ug/L ND 0.50 02/17/20 18:08
Bromobenzene ug/L ND 0.50 02/17/20 18:08
Bromochloromethane ug/L ND 0.50 02/17/20 18:08
Bromodichloromethane ug/L ND 0.50 02/17/20 18:08
Bromoform ug/L ND 0.50 02/17/20 18:08
Bromomethane ug/L ND 5.0 02/17/20 18:08
Carbon tetrachloride ug/L ND 0.50 02/17/20 18:08
Chlorobenzene ug/L ND 0.50 02/17/20 18:08
Chloroethane ug/L ND 1.0 02/17/20 18:08
Chloroform ug/L ND 0.50 02/17/20 18:08
Chloromethane ug/L ND 1.0 02/17/20 18:08
cis-1,2-Dichloroethene ug/L ND 0.50 02/17/20 18:08
cis-1,3-Dichloropropene ug/L ND 0.50 02/17/20 18:08
Dibromochloromethane ug/L ND 0.50 02/17/20 18:08
Dibromomethane ug/L ND 0.50 02/17/20 18:08
Dichlorodifluoromethane ug/L ND 0.50 02/17/20 18:08
Diisopropyl ether ug/L ND 0.50 02/17/20 18:08
Ethylbenzene ug/L ND 0.50 02/17/20 18:08
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 02/18/2020 03:35 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 24 of 48
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92464598
Former Potter Oil
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
Parameter Units
Blank
Result
Reporting
Limit Qualifiers
METHOD BLANK:2808745
Associated Lab Samples:92464598003, 92464598009, 92464598010
Matrix:Water
Analyzed
Hexachloro-1,3-butadiene ug/L ND 2.0 02/17/20 18:08
Isopropylbenzene (Cumene)ug/L ND 0.50 02/17/20 18:08
m&p-Xylene ug/L ND 1.0 02/17/20 18:08
Methyl-tert-butyl ether ug/L ND 0.50 02/17/20 18:08
Methylene Chloride ug/L ND 2.0 02/17/20 18:08
n-Butylbenzene ug/L ND 0.50 02/17/20 18:08
n-Propylbenzene ug/L ND 0.50 02/17/20 18:08
Naphthalene ug/L ND 2.0 02/17/20 18:08
o-Xylene ug/L ND 0.50 02/17/20 18:08
sec-Butylbenzene ug/L ND 0.50 02/17/20 18:08
Styrene ug/L ND 0.50 02/17/20 18:08
tert-Butylbenzene ug/L ND 0.50 02/17/20 18:08
Tetrachloroethene ug/L ND 0.50 02/17/20 18:08
Toluene ug/L ND 0.50 02/17/20 18:08
trans-1,2-Dichloroethene ug/L ND 0.50 02/17/20 18:08
trans-1,3-Dichloropropene ug/L ND 0.50 02/17/20 18:08
Trichloroethene ug/L ND 0.50 02/17/20 18:08
Trichlorofluoromethane ug/L ND 1.0 02/17/20 18:08
Vinyl chloride ug/L ND 1.0 02/17/20 18:08
1,2-Dichloroethane-d4 (S)%100 70-130 02/17/20 18:08
4-Bromofluorobenzene (S)%100 70-130 02/17/20 18:08
Toluene-d8 (S)%102 70-130 02/17/20 18:08
Parameter Units
LCS
Result
% Rec
Limits Qualifiers% RecConc.
2808746LABORATORY CONTROL SAMPLE:
LCSSpike
1,1,1,2-Tetrachloroethane ug/L 50.550 101 60-140
1,1,1-Trichloroethane ug/L 50.750 101 60-140
1,1,2,2-Tetrachloroethane ug/L 50.350 101 60-140
1,1,2-Trichloroethane ug/L 50.650 101 60-140
1,1-Dichloroethane ug/L 50.150 100 60-140
1,1-Dichloroethene ug/L 52.150 104 60-140
1,1-Dichloropropene ug/L 47.850 96 60-140
1,2,3-Trichlorobenzene ug/L 61.250 122 60-140
1,2,3-Trichloropropane ug/L 48.250 96 60-140
1,2,4-Trichlorobenzene ug/L 55.350 111 60-140
1,2,4-Trimethylbenzene ug/L 49.750 99 60-140
1,2-Dibromo-3-chloropropane ug/L 55.950 112 60-140
1,2-Dibromoethane (EDB)ug/L 52.250 104 60-140
1,2-Dichlorobenzene ug/L 48.850 98 60-140
1,2-Dichloroethane ug/L 51.050 102 60-140
1,2-Dichloropropane ug/L 51.850 104 60-140
1,3,5-Trimethylbenzene ug/L 50.750 101 60-140
1,3-Dichlorobenzene ug/L 50.750 101 60-140
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 02/18/2020 03:35 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 25 of 48
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92464598
Former Potter Oil
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
Parameter Units
LCS
Result
% Rec
Limits Qualifiers% RecConc.
2808746LABORATORY CONTROL SAMPLE:
LCSSpike
1,3-Dichloropropane ug/L 50.450 101 60-140
1,4-Dichlorobenzene ug/L 47.350 95 60-140
2,2-Dichloropropane ug/L 48.750 97 60-140
2-Chlorotoluene ug/L 50.250 100 60-140
4-Chlorotoluene ug/L 50.850 102 60-140
Benzene ug/L 51.050 102 60-140
Bromobenzene ug/L 48.050 96 60-140
Bromochloromethane ug/L 50.450 101 60-140
Bromodichloromethane ug/L 49.150 98 60-140
Bromoform ug/L 56.650 113 60-140
Bromomethane ug/L 60.050 120 60-140
Carbon tetrachloride ug/L 47.850 96 60-140
Chlorobenzene ug/L 47.850 96 60-140
Chloroethane ug/L 41.950 84 60-140
Chloroform ug/L 50.550 101 60-140
Chloromethane ug/L 50.750 101 60-140
cis-1,2-Dichloroethene ug/L 51.050 102 60-140
cis-1,3-Dichloropropene ug/L 49.650 99 60-140
Dibromochloromethane ug/L 55.050 110 60-140
Dibromomethane ug/L 48.250 96 60-140
Dichlorodifluoromethane ug/L 49.150 98 60-140
Diisopropyl ether ug/L 50.550 101 60-140
Ethylbenzene ug/L 50.550 101 60-140
Hexachloro-1,3-butadiene ug/L 50.650 101 60-140
Isopropylbenzene (Cumene)ug/L 51.950 104 60-140
m&p-Xylene ug/L 104100 104 60-140
Methyl-tert-butyl ether ug/L 51.650 103 60-140
Methylene Chloride ug/L 46.250 92 60-140
n-Butylbenzene ug/L 48.950 98 60-140
n-Propylbenzene ug/L 49.650 99 60-140
Naphthalene ug/L 56.250 112 60-140
o-Xylene ug/L 50.350 101 60-140
sec-Butylbenzene ug/L 49.650 99 60-140
Styrene ug/L 49.350 99 60-140
tert-Butylbenzene ug/L 42.550 85 60-140
Tetrachloroethene ug/L 48.950 98 60-140
Toluene ug/L 51.150 102 60-140
trans-1,2-Dichloroethene ug/L 52.050 104 60-140
trans-1,3-Dichloropropene ug/L 51.350 103 60-140
Trichloroethene ug/L 50.250 100 60-140
Trichlorofluoromethane ug/L 44.150 88 60-140
Vinyl chloride ug/L 56.250 112 60-140
1,2-Dichloroethane-d4 (S)%99 70-130
4-Bromofluorobenzene (S)%102 70-130
Toluene-d8 (S)%98 70-130
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 02/18/2020 03:35 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 26 of 48
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92464598
Former Potter Oil
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
Parameter Units
MS
Result
% Rec
Limits Qual% RecConc.
2808747MATRIX SPIKE & MATRIX SPIKE DUPLICATE:
MSSpike
Result
92464598003
2808748
MSD
Result
MSD
% Rec RPD
MSDMS
Spike
Conc.
1,1,1,2-Tetrachloroethane ug/L 20 110 60-140106 420ND22.0 21.2
1,1,1-Trichloroethane ug/L 20 112 60-140111 120ND22.4 22.2
1,1,2,2-Tetrachloroethane ug/L 20 96 60-14093 420ND19.2 18.5
1,1,2-Trichloroethane ug/L 20 108 60-140109 020ND21.7 21.7
1,1-Dichloroethane ug/L 20 107 60-140105 220ND21.4 20.9
1,1-Dichloroethene ug/L 20 112 60-140108 320ND22.3 21.7
1,1-Dichloropropene ug/L 20 109 60-140106 220ND21.8 21.3
1,2,3-Trichlorobenzene ug/L 20 110 60-140108 220ND22.1 21.6
1,2,3-Trichloropropane ug/L 20 99 60-14098 120ND19.8 19.6
1,2,4-Trichlorobenzene ug/L 20 110 60-140114 320ND22.0 22.7
1,2,4-Trimethylbenzene ug/L 20 104 60-140102 220ND20.9 20.5
1,2-Dibromo-3-chloropropane ug/L 20 90 60-14088 320ND18.1 17.5
1,2-Dibromoethane (EDB)ug/L 20 103 60-140102 020ND20.5 20.4
1,2-Dichlorobenzene ug/L 20 103 60-140102 220ND20.7 20.3
1,2-Dichloroethane ug/L 20 101 60-140100 120ND20.2 20.0
1,2-Dichloropropane ug/L 20 108 60-140110 320ND21.5 22.1
1,3,5-Trimethylbenzene ug/L 20 106 60-140105 120ND21.2 21.0
1,3-Dichlorobenzene ug/L 20 106 60-140102 320ND21.1 20.5
1,3-Dichloropropane ug/L 20 101 60-14099 220ND20.2 19.8
1,4-Dichlorobenzene ug/L 20 107 60-140105 220ND21.4 20.9
2,2-Dichloropropane ug/L 20 111 60-140105 520ND22.2 21.0
2-Chlorotoluene ug/L 20 105 60-140102 320ND21.0 20.4
4-Chlorotoluene ug/L 20 104 60-140102 220ND20.9 20.5
Benzene ug/L 20 107 60-140109 220ND21.4 21.7
Bromobenzene ug/L 20 104 60-140103 120ND20.8 20.6
Bromochloromethane ug/L 20 111 60-140109 220ND22.2 21.8
Bromodichloromethane ug/L 20 101 60-140102 020ND20.3 20.4
Bromoform ug/L 20 81 60-14077 620ND16.2 15.3
Bromomethane ug/L M12015860-140159 020ND31.7 31.8
Carbon tetrachloride ug/L 20 116 60-140115 120ND23.2 23.1
Chlorobenzene ug/L 20 109 60-140109 020ND21.7 21.7
Chloroethane ug/L 20 123 60-140120 220ND24.6 24.1
Chloroform ug/L 20 108 60-140108 020ND21.6 21.7
Chloromethane ug/L 20 88 60-14084 420ND17.6 16.9
cis-1,2-Dichloroethene ug/L 20 109 60-140109 120ND21.9 21.8
cis-1,3-Dichloropropene ug/L 20 101 60-140102 120ND20.2 20.4
Dibromochloromethane ug/L 20 99 60-14096 420ND19.9 19.1
Dibromomethane ug/L 20 109 60-140110 120ND21.9 22.0
Dichlorodifluoromethane ug/L 20 106 60-140104 220ND21.3 20.9
Diisopropyl ether ug/L 20 103 60-140103 020ND20.6 20.5
Ethylbenzene ug/L 20 107 60-140104 320ND21.4 20.9
Hexachloro-1,3-butadiene ug/L 20 113 60-140115 220ND22.6 23.0
Isopropylbenzene (Cumene)ug/L 20 111 60-140111 020ND22.2 22.2
m&p-Xylene ug/L 40 108 60-140106 140ND43.1 42.6
Methyl-tert-butyl ether ug/L 20 99 60-14098 120ND19.8 19.7
Methylene Chloride ug/L 20 106 60-140104 320ND21.2 20.7
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 02/18/2020 03:35 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 27 of 48
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92464598
Former Potter Oil
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
Parameter Units
MS
Result
% Rec
Limits Qual% RecConc.
2808747MATRIX SPIKE & MATRIX SPIKE DUPLICATE:
MSSpike
Result
92464598003
2808748
MSD
Result
MSD
% Rec RPD
MSDMS
Spike
Conc.
n-Butylbenzene ug/L 20 104 60-140103 120ND20.8 20.6
n-Propylbenzene ug/L 20 104 60-140103 120ND20.7 20.6
Naphthalene ug/L 20 97 60-14095 220ND19.4 19.0
o-Xylene ug/L 20 108 60-140104 320ND21.5 20.8
sec-Butylbenzene ug/L 20 104 60-140104 020ND20.8 20.8
Styrene ug/L 20 104 60-140103 120ND20.9 20.6
tert-Butylbenzene ug/L 20 90 60-14089 020ND17.9 17.8
Tetrachloroethene ug/L 20 108 60-140107 120ND21.6 21.4
Toluene ug/L 20 107 60-140109 120ND21.5 21.7
trans-1,2-Dichloroethene ug/L 20 111 60-140107 420ND22.1 21.3
trans-1,3-Dichloropropene ug/L 20 99 60-14098 120ND19.8 19.6
Trichloroethene ug/L 20 114 60-140114 020ND22.8 22.8
Trichlorofluoromethane ug/L 20 109 60-140106 220ND21.8 21.3
Vinyl chloride ug/L 20 122 60-140119 220ND24.3 23.8
1,2-Dichloroethane-d4 (S)%95 70-13094
4-Bromofluorobenzene (S)%99 70-13099
Toluene-d8 (S)%96 70-13099
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 02/18/2020 03:35 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 28 of 48
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92464598
Former Potter Oil
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
QC Batch:
QC Batch Method:
Analysis Method:
Analysis Description:
525498
SM 6200B
SM 6200B
6200B MSV
Associated Lab Samples:92464598001
Parameter Units
Blank
Result
Reporting
Limit Qualifiers
METHOD BLANK:2808761
Associated Lab Samples:92464598001
Matrix:Water
Analyzed
1,1,1,2-Tetrachloroethane ug/L ND 0.50 02/17/20 18:04
1,1,1-Trichloroethane ug/L ND 0.50 02/17/20 18:04
1,1,2,2-Tetrachloroethane ug/L ND 0.50 02/17/20 18:04
1,1,2-Trichloroethane ug/L ND 0.50 02/17/20 18:04
1,1-Dichloroethane ug/L ND 0.50 02/17/20 18:04
1,1-Dichloroethene ug/L ND 0.50 02/17/20 18:04
1,1-Dichloropropene ug/L ND 0.50 02/17/20 18:04
1,2,3-Trichlorobenzene ug/L ND 2.0 02/17/20 18:04
1,2,3-Trichloropropane ug/L ND 0.50 02/17/20 18:04
1,2,4-Trichlorobenzene ug/L ND 2.0 02/17/20 18:04
1,2,4-Trimethylbenzene ug/L ND 0.50 02/17/20 18:04
1,2-Dibromo-3-chloropropane ug/L ND 1.0 02/17/20 18:04
1,2-Dibromoethane (EDB)ug/L ND 0.50 02/17/20 18:04
1,2-Dichlorobenzene ug/L ND 0.50 02/17/20 18:04
1,2-Dichloroethane ug/L ND 0.50 02/17/20 18:04
1,2-Dichloropropane ug/L ND 0.50 02/17/20 18:04
1,3,5-Trimethylbenzene ug/L ND 0.50 02/17/20 18:04
1,3-Dichlorobenzene ug/L ND 0.50 02/17/20 18:04
1,3-Dichloropropane ug/L ND 0.50 02/17/20 18:04
1,4-Dichlorobenzene ug/L ND 0.50 02/17/20 18:04
2,2-Dichloropropane ug/L ND 0.50 02/17/20 18:04
2-Chlorotoluene ug/L ND 0.50 02/17/20 18:04
4-Chlorotoluene ug/L ND 0.50 02/17/20 18:04
Benzene ug/L ND 0.50 02/17/20 18:04
Bromobenzene ug/L ND 0.50 02/17/20 18:04
Bromochloromethane ug/L ND 0.50 02/17/20 18:04
Bromodichloromethane ug/L ND 0.50 02/17/20 18:04
Bromoform ug/L ND 0.50 02/17/20 18:04
Bromomethane ug/L ND 5.0 02/17/20 18:04
Carbon tetrachloride ug/L ND 0.50 02/17/20 18:04
Chlorobenzene ug/L ND 0.50 02/17/20 18:04
Chloroethane ug/L ND 1.0 02/17/20 18:04
Chloroform ug/L ND 0.50 02/17/20 18:04
Chloromethane ug/L ND 1.0 02/17/20 18:04
cis-1,2-Dichloroethene ug/L ND 0.50 02/17/20 18:04
cis-1,3-Dichloropropene ug/L ND 0.50 02/17/20 18:04
Dibromochloromethane ug/L ND 0.50 02/17/20 18:04
Dibromomethane ug/L ND 0.50 02/17/20 18:04
Dichlorodifluoromethane ug/L ND 0.50 02/17/20 18:04
Diisopropyl ether ug/L ND 0.50 02/17/20 18:04
Ethylbenzene ug/L ND 0.50 02/17/20 18:04
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 02/18/2020 03:35 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 29 of 48
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92464598
Former Potter Oil
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
Parameter Units
Blank
Result
Reporting
Limit Qualifiers
METHOD BLANK:2808761
Associated Lab Samples:92464598001
Matrix:Water
Analyzed
Hexachloro-1,3-butadiene ug/L ND 2.0 02/17/20 18:04
Isopropylbenzene (Cumene)ug/L ND 0.50 02/17/20 18:04
m&p-Xylene ug/L ND 1.0 02/17/20 18:04
Methyl-tert-butyl ether ug/L ND 0.50 02/17/20 18:04
Methylene Chloride ug/L ND 2.0 02/17/20 18:04
n-Butylbenzene ug/L ND 0.50 02/17/20 18:04
n-Propylbenzene ug/L ND 0.50 02/17/20 18:04
Naphthalene ug/L ND 2.0 02/17/20 18:04
o-Xylene ug/L ND 0.50 02/17/20 18:04
sec-Butylbenzene ug/L ND 0.50 02/17/20 18:04
Styrene ug/L ND 0.50 02/17/20 18:04
tert-Butylbenzene ug/L ND 0.50 02/17/20 18:04
Tetrachloroethene ug/L ND 0.50 02/17/20 18:04
Toluene ug/L ND 0.50 02/17/20 18:04
trans-1,2-Dichloroethene ug/L ND 0.50 02/17/20 18:04
trans-1,3-Dichloropropene ug/L ND 0.50 02/17/20 18:04
Trichloroethene ug/L ND 0.50 02/17/20 18:04
Trichlorofluoromethane ug/L ND 1.0 02/17/20 18:04
Vinyl chloride ug/L ND 1.0 02/17/20 18:04
1,2-Dichloroethane-d4 (S)%103 70-130 02/17/20 18:04
4-Bromofluorobenzene (S)%101 70-130 02/17/20 18:04
Toluene-d8 (S)%103 70-130 02/17/20 18:04
Parameter Units
LCS
Result
% Rec
Limits Qualifiers% RecConc.
2808762LABORATORY CONTROL SAMPLE:
LCSSpike
1,1,1,2-Tetrachloroethane ug/L 52.750 105 60-140
1,1,1-Trichloroethane ug/L 51.050 102 60-140
1,1,2,2-Tetrachloroethane ug/L 53.250 106 60-140
1,1,2-Trichloroethane ug/L 52.450 105 60-140
1,1-Dichloroethane ug/L 52.250 104 60-140
1,1-Dichloroethene ug/L 51.450 103 60-140
1,1-Dichloropropene ug/L 53.150 106 60-140
1,2,3-Trichlorobenzene ug/L 49.650 99 60-140
1,2,3-Trichloropropane ug/L 59.950 120 60-140
1,2,4-Trichlorobenzene ug/L 49.050 98 60-140
1,2,4-Trimethylbenzene ug/L 47.750 95 60-140
1,2-Dibromo-3-chloropropane ug/L 56.850 114 60-140
1,2-Dibromoethane (EDB)ug/L 52.250 104 60-140
1,2-Dichlorobenzene ug/L 49.950 100 60-140
1,2-Dichloroethane ug/L 48.350 97 60-140
1,2-Dichloropropane ug/L 52.550 105 60-140
1,3,5-Trimethylbenzene ug/L 47.850 96 60-140
1,3-Dichlorobenzene ug/L 50.650 101 60-140
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 02/18/2020 03:35 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 30 of 48
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92464598
Former Potter Oil
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
Parameter Units
LCS
Result
% Rec
Limits Qualifiers% RecConc.
2808762LABORATORY CONTROL SAMPLE:
LCSSpike
1,3-Dichloropropane ug/L 51.550 103 60-140
1,4-Dichlorobenzene ug/L 47.750 95 60-140
2,2-Dichloropropane ug/L 51.150 102 60-140
2-Chlorotoluene ug/L 49.050 98 60-140
4-Chlorotoluene ug/L 49.450 99 60-140
Benzene ug/L 50.250 100 60-140
Bromobenzene ug/L 48.850 98 60-140
Bromochloromethane ug/L 55.050 110 60-140
Bromodichloromethane ug/L 51.550 103 60-140
Bromoform ug/L 49.050 98 60-140
Bromomethane ug/L 36.850 74 60-140
Carbon tetrachloride ug/L 51.150 102 60-140
Chlorobenzene ug/L 48.250 96 60-140
Chloroethane ug/L 47.250 94 60-140
Chloroform ug/L 51.550 103 60-140
Chloromethane ug/L 43.050 86 60-140
cis-1,2-Dichloroethene ug/L 51.650 103 60-140
cis-1,3-Dichloropropene ug/L 54.150 108 60-140
Dibromochloromethane ug/L 55.350 111 60-140
Dibromomethane ug/L 50.950 102 60-140
Dichlorodifluoromethane ug/L 47.550 95 60-140
Diisopropyl ether ug/L 54.550 109 60-140
Ethylbenzene ug/L 46.750 93 60-140
Hexachloro-1,3-butadiene ug/L 47.750 95 60-140
Isopropylbenzene (Cumene)ug/L 49.550 99 60-140
m&p-Xylene ug/L 95.7100 96 60-140
Methyl-tert-butyl ether ug/L 51.750 103 60-140
Methylene Chloride ug/L 49.850 100 60-140
n-Butylbenzene ug/L 49.550 99 60-140
n-Propylbenzene ug/L 49.350 99 60-140
Naphthalene ug/L 50.850 102 60-140
o-Xylene ug/L 48.850 98 60-140
sec-Butylbenzene ug/L 48.950 98 60-140
Styrene ug/L 51.350 103 60-140
tert-Butylbenzene ug/L 43.850 88 60-140
Tetrachloroethene ug/L 46.350 93 60-140
Toluene ug/L 46.950 94 60-140
trans-1,2-Dichloroethene ug/L 51.850 104 60-140
trans-1,3-Dichloropropene ug/L 47.950 96 60-140
Trichloroethene ug/L 47.350 95 60-140
Trichlorofluoromethane ug/L 46.150 92 60-140
Vinyl chloride ug/L 57.850 116 60-140
1,2-Dichloroethane-d4 (S)%114 70-130
4-Bromofluorobenzene (S)%100 70-130
Toluene-d8 (S)%101 70-130
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 02/18/2020 03:35 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 31 of 48
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92464598
Former Potter Oil
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
Parameter Units
MS
Result
% Rec
Limits Qual% RecConc.
2808763MATRIX SPIKE & MATRIX SPIKE DUPLICATE:
MSSpike
Result
92464736001
2808764
MSD
Result
MSD
% Rec RPD
MSDMS
Spike
Conc.
1,1,1,2-Tetrachloroethane ug/L 20 112 60-140116 420ND22.3 23.1
1,1,1-Trichloroethane ug/L 20 116 60-140122 520ND23.3 24.4
1,1,2,2-Tetrachloroethane ug/L 20 99 60-140102 320ND19.9 20.4
1,1,2-Trichloroethane ug/L 20 111 60-140116 420ND22.3 23.2
1,1-Dichloroethane ug/L 20 109 60-140118 820ND21.8 23.5
1,1-Dichloroethene ug/L 20 116 60-140120 320ND23.1 23.9
1,1-Dichloropropene ug/L 20 115 60-140121 520ND23.0 24.2
1,2,3-Trichlorobenzene ug/L 20 109 60-140113 320ND21.9 22.7
1,2,3-Trichloropropane ug/L 20 104 60-140106 220ND20.9 21.2
1,2,4-Trichlorobenzene ug/L 20 112 60-140115 320ND22.4 23.1
1,2,4-Trimethylbenzene ug/L 20 119 60-140107 8207.9 31.7 29.3
1,2-Dibromo-3-chloropropane ug/L 20 97 60-14094 320ND19.3 18.8
1,2-Dibromoethane (EDB)ug/L 20 110 60-140112 220ND22.0 22.5
1,2-Dichlorobenzene ug/L 20 106 60-140110 320ND21.2 22.0
1,2-Dichloroethane ug/L 20 107 60-140112 520ND21.3 22.4
1,2-Dichloropropane ug/L 20 112 60-140119 620ND22.5 23.8
1,3,5-Trimethylbenzene ug/L 20 119 60-140118 020ND23.8 23.7
1,3-Dichlorobenzene ug/L 20 108 60-140113 420ND21.7 22.7
1,3-Dichloropropane ug/L 20 105 60-140113 720ND21.0 22.6
1,4-Dichlorobenzene ug/L 20 108 60-140112 320ND21.7 22.4
2,2-Dichloropropane ug/L 20 111 60-140117 620ND22.1 23.4
2-Chlorotoluene ug/L 20 108 60-140111 220ND21.7 22.1
4-Chlorotoluene ug/L 20 110 60-140110 120ND21.9 22.0
Benzene ug/L 20 112 60-140117 420ND22.5 23.4
Bromobenzene ug/L 20 108 60-140111 320ND21.5 22.2
Bromochloromethane ug/L 20 114 60-140120 520ND22.7 23.9
Bromodichloromethane ug/L 20 105 60-140108 320ND21.0 21.6
Bromoform ug/L 20 87 60-14087 020ND17.5 17.5
Bromomethane ug/L M12016160-140168 420ND32.3 33.6
Carbon tetrachloride ug/L 20 118 60-140124 520ND23.6 24.8
Chlorobenzene ug/L 20 112 60-140116 420ND22.3 23.2
Chloroethane ug/L 20 122 60-140132 820ND24.5 26.4
Chloroform ug/L 20 110 60-140117 620ND22.1 23.4
Chloromethane ug/L 20 98 60-14095 420ND19.7 19.0
cis-1,2-Dichloroethene ug/L 20 112 60-140117 420ND22.4 23.4
cis-1,3-Dichloropropene ug/L 20 105 60-140109 420ND21.0 21.9
Dibromochloromethane ug/L 20 103 60-140105 220ND20.7 21.0
Dibromomethane ug/L 20 115 60-140119 320ND23.0 23.8
Dichlorodifluoromethane ug/L 20 111 60-140114 320ND22.1 22.8
Diisopropyl ether ug/L 20 108 60-140113 520ND21.6 22.6
Ethylbenzene ug/L 20 115 60-140109 4207.2 30.2 29.0
Hexachloro-1,3-butadiene ug/L 20 113 60-140114 120ND22.7 22.8
Isopropylbenzene (Cumene)ug/L 20 116 60-140118 1200.59 23.9 24.2
m&p-Xylene ug/L 40 119 60-140110 64013.9 61.7 57.9
Methyl-tert-butyl ether ug/L 20 102 60-140107 520ND20.4 21.4
Methylene Chloride ug/L 20 110 60-140116 520ND22.0 23.2
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 02/18/2020 03:35 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 32 of 48
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92464598
Former Potter Oil
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
Parameter Units
MS
Result
% Rec
Limits Qual% RecConc.
2808763MATRIX SPIKE & MATRIX SPIKE DUPLICATE:
MSSpike
Result
92464736001
2808764
MSD
Result
MSD
% Rec RPD
MSDMS
Spike
Conc.
n-Butylbenzene ug/L 20 107 60-140110 220ND21.5 22.0
n-Propylbenzene ug/L 20 107 60-140108 1201.0 22.5 22.6
Naphthalene ug/L 20 109 60-140103 6202.9 24.8 23.4
o-Xylene ug/L 20 121 60-140107 9207.8 32.0 29.3
sec-Butylbenzene ug/L 20 110 60-140113 320ND22.0 22.5
Styrene ug/L 20 108 60-140111 220ND21.7 22.2
tert-Butylbenzene ug/L 20 94 60-14096 220ND18.7 19.1
Tetrachloroethene ug/L 20 115 60-140117 220ND23.0 23.5
Toluene ug/L 20 114 60-140117 3200.55 23.3 24.0
trans-1,2-Dichloroethene ug/L 20 116 60-140118 220ND23.2 23.6
trans-1,3-Dichloropropene ug/L 20 102 60-140108 520ND20.4 21.5
Trichloroethene ug/L 20 118 60-140125 620ND23.5 25.0
Trichlorofluoromethane ug/L 20 114 60-140117 220ND22.8 23.3
Vinyl chloride ug/L 20 128 60-140132 320ND25.6 26.4
1,2-Dichloroethane-d4 (S)%97 70-13095
4-Bromofluorobenzene (S)%100 70-130100
Toluene-d8 (S)%99 70-13098
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 02/18/2020 03:35 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 33 of 48
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92464598
Former Potter Oil
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
QC Batch:
QC Batch Method:
Analysis Method:
Analysis Description:
525636
SM 6200B
SM 6200B
6200B MSV
Associated Lab Samples:92464598002, 92464598004, 92464598005, 92464598007
Parameter Units
Blank
Result
Reporting
Limit Qualifiers
METHOD BLANK:2809533
Associated Lab Samples:92464598002, 92464598004, 92464598005, 92464598007
Matrix:Water
Analyzed
1,1,1,2-Tetrachloroethane ug/L ND 0.50 02/18/20 03:59
1,1,1-Trichloroethane ug/L ND 0.50 02/18/20 03:59
1,1,2,2-Tetrachloroethane ug/L ND 0.50 02/18/20 03:59
1,1,2-Trichloroethane ug/L ND 0.50 02/18/20 03:59
1,1-Dichloroethane ug/L ND 0.50 02/18/20 03:59
1,1-Dichloroethene ug/L ND 0.50 02/18/20 03:59
1,1-Dichloropropene ug/L ND 0.50 02/18/20 03:59
1,2,3-Trichlorobenzene ug/L ND 2.0 02/18/20 03:59
1,2,3-Trichloropropane ug/L ND 0.50 02/18/20 03:59
1,2,4-Trichlorobenzene ug/L ND 2.0 02/18/20 03:59
1,2,4-Trimethylbenzene ug/L ND 0.50 02/18/20 03:59
1,2-Dibromo-3-chloropropane ug/L ND 1.0 02/18/20 03:59
1,2-Dibromoethane (EDB)ug/L ND 0.50 02/18/20 03:59
1,2-Dichlorobenzene ug/L ND 0.50 02/18/20 03:59
1,2-Dichloroethane ug/L ND 0.50 02/18/20 03:59
1,2-Dichloropropane ug/L ND 0.50 02/18/20 03:59
1,3,5-Trimethylbenzene ug/L ND 0.50 02/18/20 03:59
1,3-Dichlorobenzene ug/L ND 0.50 02/18/20 03:59
1,3-Dichloropropane ug/L ND 0.50 02/18/20 03:59
1,4-Dichlorobenzene ug/L ND 0.50 02/18/20 03:59
2,2-Dichloropropane ug/L ND 0.50 02/18/20 03:59
2-Chlorotoluene ug/L ND 0.50 02/18/20 03:59
4-Chlorotoluene ug/L ND 0.50 02/18/20 03:59
Benzene ug/L ND 0.50 02/18/20 03:59
Bromobenzene ug/L ND 0.50 02/18/20 03:59
Bromochloromethane ug/L ND 0.50 02/18/20 03:59
Bromodichloromethane ug/L ND 0.50 02/18/20 03:59
Bromoform ug/L ND 0.50 02/18/20 03:59
Bromomethane ug/L ND 5.0 02/18/20 03:59
Carbon tetrachloride ug/L ND 0.50 02/18/20 03:59
Chlorobenzene ug/L ND 0.50 02/18/20 03:59
Chloroethane ug/L ND 1.0 02/18/20 03:59
Chloroform ug/L ND 0.50 02/18/20 03:59
Chloromethane ug/L ND 1.0 02/18/20 03:59
cis-1,2-Dichloroethene ug/L ND 0.50 02/18/20 03:59
cis-1,3-Dichloropropene ug/L ND 0.50 02/18/20 03:59
Dibromochloromethane ug/L ND 0.50 02/18/20 03:59
Dibromomethane ug/L ND 0.50 02/18/20 03:59
Dichlorodifluoromethane ug/L ND 0.50 02/18/20 03:59
Diisopropyl ether ug/L ND 0.50 02/18/20 03:59
Ethylbenzene ug/L ND 0.50 02/18/20 03:59
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 02/18/2020 03:35 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 34 of 48
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92464598
Former Potter Oil
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
Parameter Units
Blank
Result
Reporting
Limit Qualifiers
METHOD BLANK:2809533
Associated Lab Samples:92464598002, 92464598004, 92464598005, 92464598007
Matrix:Water
Analyzed
Hexachloro-1,3-butadiene ug/L ND 2.0 02/18/20 03:59
Isopropylbenzene (Cumene)ug/L ND 0.50 02/18/20 03:59
m&p-Xylene ug/L ND 1.0 02/18/20 03:59
Methyl-tert-butyl ether ug/L ND 0.50 02/18/20 03:59
Methylene Chloride ug/L ND 2.0 02/18/20 03:59
n-Butylbenzene ug/L ND 0.50 02/18/20 03:59
n-Propylbenzene ug/L ND 0.50 02/18/20 03:59
Naphthalene ug/L ND 2.0 02/18/20 03:59
o-Xylene ug/L ND 0.50 02/18/20 03:59
sec-Butylbenzene ug/L ND 0.50 02/18/20 03:59
Styrene ug/L ND 0.50 02/18/20 03:59
tert-Butylbenzene ug/L ND 0.50 02/18/20 03:59
Tetrachloroethene ug/L ND 0.50 02/18/20 03:59
Toluene ug/L ND 0.50 02/18/20 03:59
trans-1,2-Dichloroethene ug/L ND 0.50 02/18/20 03:59
trans-1,3-Dichloropropene ug/L ND 0.50 02/18/20 03:59
Trichloroethene ug/L ND 0.50 02/18/20 03:59
Trichlorofluoromethane ug/L ND 1.0 02/18/20 03:59
Vinyl chloride ug/L ND 1.0 02/18/20 03:59
1,2-Dichloroethane-d4 (S)%96 70-130 02/18/20 03:59
4-Bromofluorobenzene (S)%98 70-130 02/18/20 03:59
Toluene-d8 (S)%102 70-130 02/18/20 03:59
Parameter Units
LCS
Result
% Rec
Limits Qualifiers% RecConc.
2809534LABORATORY CONTROL SAMPLE:
LCSSpike
1,1,1,2-Tetrachloroethane ug/L 53.850 108 60-140
1,1,1-Trichloroethane ug/L 52.950 106 60-140
1,1,2,2-Tetrachloroethane ug/L 54.450 109 60-140
1,1,2-Trichloroethane ug/L 54.650 109 60-140
1,1-Dichloroethane ug/L 53.350 107 60-140
1,1-Dichloroethene ug/L 55.750 111 60-140
1,1-Dichloropropene ug/L 51.450 103 60-140
1,2,3-Trichlorobenzene ug/L 59.150 118 60-140
1,2,3-Trichloropropane ug/L 53.950 108 60-140
1,2,4-Trichlorobenzene ug/L 57.050 114 60-140
1,2,4-Trimethylbenzene ug/L 55.850 112 60-140
1,2-Dibromo-3-chloropropane ug/L 56.750 113 60-140
1,2-Dibromoethane (EDB)ug/L 55.750 111 60-140
1,2-Dichlorobenzene ug/L 52.950 106 60-140
1,2-Dichloroethane ug/L 53.650 107 60-140
1,2-Dichloropropane ug/L 55.450 111 60-140
1,3,5-Trimethylbenzene ug/L 55.550 111 60-140
1,3-Dichlorobenzene ug/L 54.850 110 60-140
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 02/18/2020 03:35 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 35 of 48
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92464598
Former Potter Oil
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
Parameter Units
LCS
Result
% Rec
Limits Qualifiers% RecConc.
2809534LABORATORY CONTROL SAMPLE:
LCSSpike
1,3-Dichloropropane ug/L 55.050 110 60-140
1,4-Dichlorobenzene ug/L 51.350 103 60-140
2,2-Dichloropropane ug/L 51.750 103 60-140
2-Chlorotoluene ug/L 55.750 111 60-140
4-Chlorotoluene ug/L 55.850 112 60-140
Benzene ug/L 56.050 112 60-140
Bromobenzene ug/L 53.050 106 60-140
Bromochloromethane ug/L 51.250 102 60-140
Bromodichloromethane ug/L 52.550 105 60-140
Bromoform ug/L 57.250 114 60-140
Bromomethane ug/L 58.650 117 60-140
Carbon tetrachloride ug/L 51.550 103 60-140
Chlorobenzene ug/L 52.450 105 60-140
Chloroethane ug/L 45.450 91 60-140
Chloroform ug/L 52.950 106 60-140
Chloromethane ug/L 49.450 99 60-140
cis-1,2-Dichloroethene ug/L 53.550 107 60-140
cis-1,3-Dichloropropene ug/L 54.050 108 60-140
Dibromochloromethane ug/L 58.650 117 60-140
Dibromomethane ug/L 52.150 104 60-140
Dichlorodifluoromethane ug/L 50.350 101 60-140
Diisopropyl ether ug/L 51.350 103 60-140
Ethylbenzene ug/L 54.850 110 60-140
Hexachloro-1,3-butadiene ug/L 54.150 108 60-140
Isopropylbenzene (Cumene)ug/L 55.950 112 60-140
m&p-Xylene ug/L 112100 112 60-140
Methyl-tert-butyl ether ug/L 53.450 107 60-140
Methylene Chloride ug/L 48.350 97 60-140
n-Butylbenzene ug/L 54.850 110 60-140
n-Propylbenzene ug/L 55.650 111 60-140
Naphthalene ug/L 57.450 115 60-140
o-Xylene ug/L 53.650 107 60-140
sec-Butylbenzene ug/L 55.350 111 60-140
Styrene ug/L 53.650 107 60-140
tert-Butylbenzene ug/L 46.350 93 60-140
Tetrachloroethene ug/L 53.450 107 60-140
Toluene ug/L 54.650 109 60-140
trans-1,2-Dichloroethene ug/L 54.950 110 60-140
trans-1,3-Dichloropropene ug/L 55.950 112 60-140
Trichloroethene ug/L 54.150 108 60-140
Trichlorofluoromethane ug/L 47.050 94 60-140
Vinyl chloride ug/L 58.350 117 60-140
1,2-Dichloroethane-d4 (S)%94 70-130
4-Bromofluorobenzene (S)%102 70-130
Toluene-d8 (S)%100 70-130
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 02/18/2020 03:35 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 36 of 48
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92464598
Former Potter Oil
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
Parameter Units
MS
Result
% Rec
Limits Qual% RecConc.
2809535MATRIX SPIKE & MATRIX SPIKE DUPLICATE:
MSSpike
Result
92464598007
2809536
MSD
Result
MSD
% Rec RPD
MSDMS
Spike
Conc.
1,1,1,2-Tetrachloroethane ug/L 200 107 60-140109 2200ND214217
1,1,1-Trichloroethane ug/L 200 111 60-140114 2200ND223228
1,1,2,2-Tetrachloroethane ug/L 200 98 60-14099 1200ND196198
1,1,2-Trichloroethane ug/L 200 109 60-140111 2200ND217222
1,1-Dichloroethane ug/L 200 107 60-140109 2200ND214218
1,1-Dichloroethene ug/L 200 110 60-140111 0200ND221222
1,1-Dichloropropene ug/L 200 114 60-140109 5200ND228217
1,2,3-Trichlorobenzene ug/L 200 112 60-140114 2200ND225228
1,2,3-Trichloropropane ug/L 200 114 60-140111 2200ND227222
1,2,4-Trichlorobenzene ug/L 200 116 60-140114 1200ND231229
1,2,4-Trimethylbenzene ug/L M12005860-14065 120093810501070
1,2-Dibromo-3-chloropropane ug/L 200 99 60-14094 6200ND198187
1,2-Dibromoethane (EDB)ug/L 200 104 60-140104 0200ND208209
1,2-Dichlorobenzene ug/L 200 103 60-140105 1200ND207209
1,2-Dichloroethane ug/L 200 102 60-140105 3200ND204210
1,2-Dichloropropane ug/L 200 107 60-140113 6200ND214226
1,3,5-Trimethylbenzene ug/L 200 84 60-14086 1200297465468
1,3-Dichlorobenzene ug/L 200 105 60-140105 0200ND210210
1,3-Dichloropropane ug/L 200 102 60-140104 2200ND204208
1,4-Dichlorobenzene ug/L 200 106 60-140107 0200ND213213
2,2-Dichloropropane ug/L 200 110 60-140109 1200ND219218
2-Chlorotoluene ug/L 200 113 60-140114 1200ND225227
4-Chlorotoluene ug/L 200 103 60-140104 1200ND207208
Benzene ug/L 200 92 60-14099 2200418603616
Bromobenzene ug/L 200 103 60-140104 1200ND205207
Bromochloromethane ug/L 200 111 60-140116 4200ND221231
Bromodichloromethane ug/L 200 104 60-140104 1200ND208209
Bromoform ug/L 200 88 60-14088 0200ND176176
Bromomethane ug/L M120014760-140151 3200ND293303
Carbon tetrachloride ug/L 200 113 60-140114 1200ND226227
Chlorobenzene ug/L 200 109 60-140110 1200ND218220
Chloroethane ug/L 200 125 60-140124 0200ND250249
Chloroform ug/L 200 110 60-140107 2200ND219214
Chloromethane ug/L 200 92 60-14092 1200ND184183
cis-1,2-Dichloroethene ug/L 200 109 60-140110 1200ND217219
cis-1,3-Dichloropropene ug/L 200 103 60-140106 3200ND205211
Dibromochloromethane ug/L 200 99 60-140100 0200ND199199
Dibromomethane ug/L 200 111 60-140112 1200ND222224
Dichlorodifluoromethane ug/L 200 109 60-140107 2200ND217214
Diisopropyl ether ug/L 200 103 60-140106 3200ND207212
Ethylbenzene ug/L 200 93 60-14096 1200307492498
Hexachloro-1,3-butadiene ug/L 200 110 60-140111 1200ND220221
Isopropylbenzene (Cumene)ug/L 200 112 60-140112 020021.0 245 245
m&p-Xylene ug/L 400 62 60-14067 1400159018401860
Methyl-tert-butyl ether ug/L 200 101 60-140101 0200ND205205
Methylene Chloride ug/L 200 113 60-140116 3200ND225232
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.Date: 02/18/2020 03:35 PM
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9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 37 of 48
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92464598
Former Potter Oil
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
Parameter Units
MS
Result
% Rec
Limits Qual% RecConc.
2809535MATRIX SPIKE & MATRIX SPIKE DUPLICATE:
MSSpike
Result
92464598007
2809536
MSD
Result
MSD
% Rec RPD
MSDMS
Spike
Conc.
n-Butylbenzene ug/L 200 105 60-140102 220047.8 257 251
n-Propylbenzene ug/L 200 99 60-14098 120066.9 265 263
Naphthalene ug/L 200 97 60-140102 2200275468478
o-Xylene ug/L 200 75 60-14086 2200720871892
sec-Butylbenzene ug/L 200 109 60-140108 0200ND218217
Styrene ug/L 200 106 60-140107 1200ND213215
tert-Butylbenzene ug/L 200 90 60-14090 0200ND179180
Tetrachloroethene ug/L 200 106 60-140108 1200ND213216
Toluene ug/L 200 60 60-14074 320090810301060
trans-1,2-Dichloroethene ug/L 200 109 60-140110 0200ND219219
trans-1,3-Dichloropropene ug/L 200 100 60-140104 4200ND199208
Trichloroethene ug/L 200 117 60-140120 3200ND233239
Trichlorofluoromethane ug/L 200 111 60-140109 2200ND221218
Vinyl chloride ug/L 200 122 60-140121 1200ND245242
1,2-Dichloroethane-d4 (S)%95 70-13095
4-Bromofluorobenzene (S)%99 70-13099
Toluene-d8 (S)%100 70-130100
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.Date: 02/18/2020 03:35 PM
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[phone]
Page 38 of 48
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92464598
Former Potter Oil
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
QC Batch:
QC Batch Method:
Analysis Method:
Analysis Description:
525638
SM 6200B
SM 6200B
6200B MSV
Associated Lab Samples:92464598006, 92464598008
Parameter Units
Blank
Result
Reporting
Limit Qualifiers
METHOD BLANK:2809541
Associated Lab Samples:92464598006, 92464598008
Matrix:Water
Analyzed
1,1,1,2-Tetrachloroethane ug/L ND 0.50 02/18/20 03:30
1,1,1-Trichloroethane ug/L ND 0.50 02/18/20 03:30
1,1,2,2-Tetrachloroethane ug/L ND 0.50 02/18/20 03:30
1,1,2-Trichloroethane ug/L ND 0.50 02/18/20 03:30
1,1-Dichloroethane ug/L ND 0.50 02/18/20 03:30
1,1-Dichloroethene ug/L ND 0.50 02/18/20 03:30
1,1-Dichloropropene ug/L ND 0.50 02/18/20 03:30
1,2,3-Trichlorobenzene ug/L ND 2.0 02/18/20 03:30
1,2,3-Trichloropropane ug/L ND 0.50 02/18/20 03:30
1,2,4-Trichlorobenzene ug/L ND 2.0 02/18/20 03:30
1,2,4-Trimethylbenzene ug/L ND 0.50 02/18/20 03:30
1,2-Dibromo-3-chloropropane ug/L ND 1.0 02/18/20 03:30
1,2-Dibromoethane (EDB)ug/L ND 0.50 02/18/20 03:30
1,2-Dichlorobenzene ug/L ND 0.50 02/18/20 03:30
1,2-Dichloroethane ug/L ND 0.50 02/18/20 03:30
1,2-Dichloropropane ug/L ND 0.50 02/18/20 03:30
1,3,5-Trimethylbenzene ug/L ND 0.50 02/18/20 03:30
1,3-Dichlorobenzene ug/L ND 0.50 02/18/20 03:30
1,3-Dichloropropane ug/L ND 0.50 02/18/20 03:30
1,4-Dichlorobenzene ug/L ND 0.50 02/18/20 03:30
2,2-Dichloropropane ug/L ND 0.50 02/18/20 03:30
2-Chlorotoluene ug/L ND 0.50 02/18/20 03:30
4-Chlorotoluene ug/L ND 0.50 02/18/20 03:30
Benzene ug/L ND 0.50 02/18/20 03:30
Bromobenzene ug/L ND 0.50 02/18/20 03:30
Bromochloromethane ug/L ND 0.50 02/18/20 03:30
Bromodichloromethane ug/L ND 0.50 02/18/20 03:30
Bromoform ug/L ND 0.50 02/18/20 03:30
Bromomethane ug/L ND 5.0 02/18/20 03:30
Carbon tetrachloride ug/L ND 0.50 02/18/20 03:30
Chlorobenzene ug/L ND 0.50 02/18/20 03:30
Chloroethane ug/L ND 1.0 02/18/20 03:30
Chloroform ug/L ND 0.50 02/18/20 03:30
Chloromethane ug/L ND 1.0 02/18/20 03:30
cis-1,2-Dichloroethene ug/L ND 0.50 02/18/20 03:30
cis-1,3-Dichloropropene ug/L ND 0.50 02/18/20 03:30
Dibromochloromethane ug/L ND 0.50 02/18/20 03:30
Dibromomethane ug/L ND 0.50 02/18/20 03:30
Dichlorodifluoromethane ug/L ND 0.50 02/18/20 03:30
Diisopropyl ether ug/L ND 0.50 02/18/20 03:30
Ethylbenzene ug/L ND 0.50 02/18/20 03:30
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.Date: 02/18/2020 03:35 PM
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Page 39 of 48
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92464598
Former Potter Oil
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
Parameter Units
Blank
Result
Reporting
Limit Qualifiers
METHOD BLANK:2809541
Associated Lab Samples:92464598006, 92464598008
Matrix:Water
Analyzed
Hexachloro-1,3-butadiene ug/L ND 2.0 02/18/20 03:30
Isopropylbenzene (Cumene)ug/L ND 0.50 02/18/20 03:30
m&p-Xylene ug/L ND 1.0 02/18/20 03:30
Methyl-tert-butyl ether ug/L ND 0.50 02/18/20 03:30
Methylene Chloride ug/L ND 2.0 02/18/20 03:30
n-Butylbenzene ug/L ND 0.50 02/18/20 03:30
n-Propylbenzene ug/L ND 0.50 02/18/20 03:30
Naphthalene ug/L ND 2.0 02/18/20 03:30
o-Xylene ug/L ND 0.50 02/18/20 03:30
sec-Butylbenzene ug/L ND 0.50 02/18/20 03:30
Styrene ug/L ND 0.50 02/18/20 03:30
tert-Butylbenzene ug/L ND 0.50 02/18/20 03:30
Tetrachloroethene ug/L ND 0.50 02/18/20 03:30
Toluene ug/L ND 0.50 02/18/20 03:30
trans-1,2-Dichloroethene ug/L ND 0.50 02/18/20 03:30
trans-1,3-Dichloropropene ug/L ND 0.50 02/18/20 03:30
Trichloroethene ug/L ND 0.50 02/18/20 03:30
Trichlorofluoromethane ug/L ND 1.0 02/18/20 03:30
Vinyl chloride ug/L ND 1.0 02/18/20 03:30
1,2-Dichloroethane-d4 (S)%99 70-130 02/18/20 03:30
4-Bromofluorobenzene (S)%101 70-130 02/18/20 03:30
Toluene-d8 (S)%107 70-130 02/18/20 03:30
Parameter Units
LCS
Result
% Rec
Limits Qualifiers% RecConc.
2809542LABORATORY CONTROL SAMPLE:
LCSSpike
1,1,1,2-Tetrachloroethane ug/L 56.150 112 60-140
1,1,1-Trichloroethane ug/L 51.950 104 60-140
1,1,2,2-Tetrachloroethane ug/L 57.350 115 60-140
1,1,2-Trichloroethane ug/L 55.950 112 60-140
1,1-Dichloroethane ug/L 52.550 105 60-140
1,1-Dichloroethene ug/L 52.150 104 60-140
1,1-Dichloropropene ug/L 54.950 110 60-140
1,2,3-Trichlorobenzene ug/L 55.350 111 60-140
1,2,3-Trichloropropane ug/L 66.050 132 60-140
1,2,4-Trichlorobenzene ug/L 55.050 110 60-140
1,2,4-Trimethylbenzene ug/L 53.150 106 60-140
1,2-Dibromo-3-chloropropane ug/L 61.250 122 60-140
1,2-Dibromoethane (EDB)ug/L 55.550 111 60-140
1,2-Dichlorobenzene ug/L 54.050 108 60-140
1,2-Dichloroethane ug/L 49.950 100 60-140
1,2-Dichloropropane ug/L 55.250 110 60-140
1,3,5-Trimethylbenzene ug/L 52.950 106 60-140
1,3-Dichlorobenzene ug/L 55.050 110 60-140
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.Date: 02/18/2020 03:35 PM
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Huntersville, NC 28078
[phone]
Page 40 of 48
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92464598
Former Potter Oil
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
Parameter Units
LCS
Result
% Rec
Limits Qualifiers% RecConc.
2809542LABORATORY CONTROL SAMPLE:
LCSSpike
1,3-Dichloropropane ug/L 54.550 109 60-140
1,4-Dichlorobenzene ug/L 52.150 104 60-140
2,2-Dichloropropane ug/L 52.450 105 60-140
2-Chlorotoluene ug/L 53.250 106 60-140
4-Chlorotoluene ug/L 54.150 108 60-140
Benzene ug/L 52.450 105 60-140
Bromobenzene ug/L 54.550 109 60-140
Bromochloromethane ug/L 54.250 108 60-140
Bromodichloromethane ug/L 53.350 107 60-140
Bromoform ug/L 49.950 100 60-140
Bromomethane ug/L 40.950 82 60-140
Carbon tetrachloride ug/L 53.350 107 60-140
Chlorobenzene ug/L 52.550 105 60-140
Chloroethane ug/L 42.050 84 60-140
Chloroform ug/L 52.550 105 60-140
Chloromethane ug/L 45.850 92 60-140
cis-1,2-Dichloroethene ug/L 52.450 105 60-140
cis-1,3-Dichloropropene ug/L 56.750 113 60-140
Dibromochloromethane ug/L 57.150 114 60-140
Dibromomethane ug/L 54.550 109 60-140
Dichlorodifluoromethane ug/L 45.450 91 60-140
Diisopropyl ether ug/L 56.750 113 60-140
Ethylbenzene ug/L 50.750 101 60-140
Hexachloro-1,3-butadiene ug/L 53.350 107 60-140
Isopropylbenzene (Cumene)ug/L 52.750 105 60-140
m&p-Xylene ug/L 102100 102 60-140
Methyl-tert-butyl ether ug/L 54.150 108 60-140
Methylene Chloride ug/L 49.650 99 60-140
n-Butylbenzene ug/L 54.250 108 60-140
n-Propylbenzene ug/L 53.550 107 60-140
Naphthalene ug/L 56.350 113 60-140
o-Xylene ug/L 51.650 103 60-140
sec-Butylbenzene ug/L 53.450 107 60-140
Styrene ug/L 54.350 109 60-140
tert-Butylbenzene ug/L 42.950 86 60-140
Tetrachloroethene ug/L 50.650 101 60-140
Toluene ug/L 51.050 102 60-140
trans-1,2-Dichloroethene ug/L 52.350 105 60-140
trans-1,3-Dichloropropene ug/L 50.150 100 60-140
Trichloroethene ug/L 49.950 100 60-140
Trichlorofluoromethane ug/L 47.850 96 60-140
Vinyl chloride ug/L 57.150 114 60-140
1,2-Dichloroethane-d4 (S)%108 70-130
4-Bromofluorobenzene (S)%98 70-130
Toluene-d8 (S)%101 70-130
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.Date: 02/18/2020 03:35 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 41 of 48
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92464598
Former Potter Oil
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
Parameter Units
MS
Result
% Rec
Limits Qual% RecConc.
2809543MATRIX SPIKE & MATRIX SPIKE DUPLICATE:
MSSpike
Result
92464623003
2809544
MSD
Result
MSD
% Rec RPD
MSDMS
Spike
Conc.
1,1,1,2-Tetrachloroethane ug/L 2000 113 60-140112 12000<42.2 2260 2240
1,1,1-Trichloroethane ug/L 2000 113 60-140114 12000<27.8 2270 2280
1,1,2,2-Tetrachloroethane ug/L 2000 114 60-140114 02000<19.3 2270 2280
1,1,2-Trichloroethane ug/L 2000 111 60-140113 22000<23.2 2220 2260
1,1-Dichloroethane ug/L 2000 113 60-140113 02000<24.4 2260 2270
1,1-Dichloroethene ug/L 2000 115 60-140116 12000<21.8 2310 2320
1,1-Dichloropropene ug/L 2000 122 60-140122 02000<34.8 2450 2440
1,2,3-Trichlorobenzene ug/L 2000 101 60-140106 52000<78.1 2030 2130
1,2,3-Trichloropropane ug/L 2000 129 60-140128 02000<27.1 2570 2570
1,2,4-Trichlorobenzene ug/L 2000 103 60-140105 22000<43.6 2070 2110
1,2,4-Trimethylbenzene ug/L 2000 92 60-14092 02000104028802890
1,2-Dibromo-3-chloropropane ug/L 2000 113 60-140117 32000<38.5 2260 2330
1,2-Dibromoethane (EDB)ug/L 2000 109 60-140108 1200013123102290
1,2-Dichlorobenzene ug/L 2000 109 60-140110 12000<24.0 2180 2210
1,2-Dichloroethane ug/L 2000 78 60-14079 02000133029002910
1,2-Dichloropropane ug/L 2000 115 60-140117 12000<18.3 2310 2330
1,3,5-Trimethylbenzene ug/L 2000 106 60-140106 0200028324002400
1,3-Dichlorobenzene ug/L 2000 112 60-140112 02000<25.0 2230 2240
1,3-Dichloropropane ug/L 2000 110 60-140110 02000<34.1 2200 2200
1,4-Dichlorobenzene ug/L 2000 108 60-140107 12000<24.9 2160 2140
2,2-Dichloropropane ug/L 2000 117 60-140116 12000<28.1 2350 2330
2-Chlorotoluene ug/L 2000 111 60-140111 02000<20.7 2220 2220
4-Chlorotoluene ug/L 2000 112 60-140111 12000<20.6 2250 2220
Benzene ug/L M12000-209 60-140-216 12000183001410013900
Bromobenzene ug/L 2000 110 60-140109 12000<21.5 2200 2180
Bromochloromethane ug/L 2000 115 60-140117 12000<25.8 2310 2330
Bromodichloromethane ug/L 2000 108 60-140108 02000<18.5 2160 2150
Bromoform ug/L 2000 95 60-14096 12000<40.5 1910 1930
Bromomethane ug/L 2000 98 60-140125 242000<172 1960 2490
Carbon tetrachloride ug/L 2000 115 60-140117 22000<23.2 2310 2350
Chlorobenzene ug/L 2000 111 60-140109 12000<22.5 2210 2190
Chloroethane ug/L 2000 129 60-140124 32000<58.5 2570 2490
Chloroform ug/L 2000 112 60-140113 02000<35.3 2250 2250
Chloromethane ug/L 2000 105 60-140105 12000<41.5 2090 2110
cis-1,2-Dichloroethene ug/L 2000 112 60-140112 02000<20.7 2240 2240
cis-1,3-Dichloropropene ug/L 2000 113 60-140115 22000<35.7 2250 2300
Dibromochloromethane ug/L 2000 110 60-140113 32000<40.2 2200 2260
Dibromomethane ug/L 2000 109 60-140110 12000<31.0 2180 2190
Dichlorodifluoromethane ug/L 2000 103 60-140102 12000<28.4 2050 2030
Diisopropyl ether ug/L 2000 109 60-140111 1200011023002320
Ethylbenzene ug/L 2000 83 60-14081 22000141030803030
Hexachloro-1,3-butadiene ug/L 2000 105 60-140109 32000<120 2100 2170
Isopropylbenzene (Cumene)ug/L 2000 114 60-140114 0200070.6 2350 2350
m&p-Xylene ug/L M140006260-14059 24000518076707550
Methyl-tert-butyl ether ug/L 2000 104 60-140106 22000<44.4 2080 2120
Methylene Chloride ug/L 2000 110 60-140110 02000164J23602360
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.Date: 02/18/2020 03:35 PM
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Page 42 of 48
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92464598
Former Potter Oil
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
Parameter Units
MS
Result
% Rec
Limits Qual% RecConc.
2809543MATRIX SPIKE & MATRIX SPIKE DUPLICATE:
MSSpike
Result
92464623003
2809544
MSD
Result
MSD
% Rec RPD
MSDMS
Spike
Conc.
n-Butylbenzene ug/L 2000 113 60-140115 22000<35.3 2250 2290
n-Propylbenzene ug/L 2000 110 60-140111 0200015323602370
Naphthalene ug/L 2000 96 60-14097 1200053524502470
o-Xylene ug/L 2000 64 60-14060 22000255038303750
sec-Butylbenzene ug/L 2000 112 60-140114 12000<24.6 2240 2270
Styrene ug/L 2000 117 60-140116 02000<25.6 2330 2320
tert-Butylbenzene ug/L 2000 91 60-14091 12000<25.0 1830 1810
Tetrachloroethene ug/L 2000 110 60-140109 12000<23.2 2200 2180
Toluene ug/L M12000-73 60-140-76 120001070092409170
trans-1,2-Dichloroethene ug/L 2000 113 60-140114 12000<25.7 2260 2280
trans-1,3-Dichloropropene ug/L 2000 100 60-140100 02000<39.4 1990 2000
Trichloroethene ug/L 2000 109 60-140109 02000<23.2 2180 2170
Trichlorofluoromethane ug/L 2000 108 60-140109 12000<33.6 2150 2170
Vinyl chloride ug/L 2000 130 60-140131 12000<40.7 2600 2620
1,2-Dichloroethane-d4 (S)%104 70-130106
4-Bromofluorobenzene (S)%100 70-13099
Toluene-d8 (S)%102 70-130101
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.Date: 02/18/2020 03:35 PM
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Page 43 of 48
#=QL#
QUALIFIERS
Pace Project No.:
Project:
92464598
Former Potter Oil
DEFINITIONS
DF - Dilution Factor, if reported, represents the factor applied to the reported data due to dilution of the sample aliquot.
ND - Not Detected at or above adjusted reporting limit.
TNTC - Too Numerous To Count
J - Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit.
MDL - Adjusted Method Detection Limit.
PQL - Practical Quantitation Limit.
RL - Reporting Limit - The lowest concentration value that meets project requirements for quantitative data with known precision and
bias for a specific analyte in a specific matrix.
S - Surrogate
1,2-Diphenylhydrazine decomposes to and cannot be separated from Azobenzene using Method 8270. The result for each analyte is
a combined concentration.
Consistent with EPA guidelines, unrounded data are displayed and have been used to calculate % recovery and RPD values.
LCS(D) - Laboratory Control Sample (Duplicate)
MS(D) - Matrix Spike (Duplicate)
DUP - Sample Duplicate
RPD - Relative Percent Difference
NC - Not Calculable.
SG - Silica Gel - Clean-Up
U - Indicates the compound was analyzed for, but not detected.
Acid preservation may not be appropriate for 2 Chloroethylvinyl ether.
A separate vial preserved to a pH of 4-5 is recommended in SW846 Chapter 4 for the analysis of Acrolein and Acrylonitrile by EPA
Method 8260.
N-Nitrosodiphenylamine decomposes and cannot be separated from Diphenylamine using Method 8270. The result reported for
each analyte is a combined concentration.
Pace Analytical is TNI accredited. Contact your Pace PM for the current list of accredited analytes.
TNI - The NELAC Institute.
LABORATORIES
Pace Analytical Services - CharlottePASI-C
ANALYTE QUALIFIERS
Matrix spike recovery exceeded QC limits. Batch accepted based on laboratory control sample (LCS) recovery.M1
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.Date: 02/18/2020 03:35 PM
Pace Analytical Services, LLC
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[phone]
Page 44 of 48
#=CR#
QUALITY CONTROL DATA CROSS REFERENCE TABLE
Pace Project No.:
Project:
92464598
Former Potter Oil
Lab ID Sample ID QC Batch Method QC Batch Analytical Method
Analytical
Batch
92464598001 525498MW-2R SM 6200B
92464598002 525636MW-4 SM 6200B
92464598003 525496MW-PO SM 6200B
92464598004 525636MW-5 SM 6200B
92464598005 525636MW-6 SM 6200B
92464598006 525638MW-9R SM 6200B
92464598007 525636MW-10 SM 6200B
92464598008 525638MW-19 SM 6200B
92464598009 525496MW-23 SM 6200B
92464598010 525496MW-24 SM 6200B
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.Date: 02/18/2020 03:35 PM
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[phone]
Page 45 of 48
Page 46 of 48
Page 47 of 48
Page 48 of 48

APPENDIX B
FIELD NOTES