WI-27807_47115_CA_MRP_20221201

GROUNDWATER MONITORING REPORT
GOGAS NO. 14
415 US HIGHWAY 117
BURGAW, PENDER COUNTY, NORTH CAROLINA
INCIDENT NO. 47115
FACILITY ID No. 00-0-0000032629
Prepared For:
Quality Oil Company, LLC
1540 Silas Creek Parkway
Winston-Salem, North Carolina 27127
Prepared By:
Progress Environmental Group, Inc.
P.O. Box 5884
Winston-Salem, North Carolina 27113
Progress Project No. QUA403N.GW
December 1, 2022
P.O. Box 5884 • Winston-Salem, North Carolina 27113-5884
Office 336.722.9999 • Fax [phone]
December 1, 2022
Ms. Liz Price
North Carolina Department of Environmental Quality
Division of Waste Management, UST Section
Wilmington Regional Office
127 Cardinal Drive Extension
Wilmington, North Carolina 28405
Subject: Groundwater Monitoring Report GoGas No. 14 415 US Highway 117 Burgaw, Pender County, North Carolina Progress Project No. QUA403N.GW
Incident No. 47115
Dear Ms. Price:
On behalf of Quality Oil Company, LLC, Progress Environmental Group, Inc. (Progress) is
submitting this Groundwater Monitoring Report for the above-referenced site. Included in
this report is a description of the field activities, the results obtained, and the conclusions
and recommendations.
This Groundwater Monitoring Report has been prepared in general accordance with the
Underground Storage Tank Section guidelines presented in the NCDEQ Guidelines for
Assessment and Corrective Action for UST Releases dated January 19, 2021.
We appreciate your consideration and cooperation in the submission of this report. If you
have any questions concerning this report please feel free to contact us at [phone].
Sincerely,
PROGRESS ENVIRONMENTAL GROUP, INC.
Joseph S. Lawson, III Jeffrey A. Ballsieper, L.G.
Director of Ecological Services Director of Environmental Services
NC Licensed 1653
Attachment: Groundwater Monitoring Report and Appendices
cc: Mr. Don McIver, Quality Oil Company, LLC
P.O. Box 5884 • Winston-Salem, North Carolina 27113-5884
Office 336.722.9999 • Fax [phone]
December 1, 2022
Mr. Don McIver
Quality Oil Company, LLC
1540 Silas Creek Parkway
Winston-Salem, North Carolina 27127
Subject: Groundwater Monitoring Report GoGas No. 14 415 US Highway 117 Burgaw, Pender County, North Carolina Progress Project No. QUA403N.GW
Incident No. 47115
Dear Mr. McIver:
Progress Environmental Group, Inc. (Progress) is pleased to submit this Groundwater
Monitoring Report for the GoGas No. 14 in Burgaw, North Carolina. The objective of the
assessment was to sample monitoring wells, assess potential risks to human health and the
environment, and recommend whether groundwater monitoring and/or corrective action
may be necessary at the site.
This Groundwater Monitoring Report is intended for the use of Quality Oil Company, LLC,
only. The contents should not be relied upon by other parties without the express written
consent of Progress. The findings are relevant to the dates of our site work and should not
be relied upon to represent site conditions on other dates.
Progress appreciates the opportunity to provide our environmental services. If you have
any questions or if we may be of further service, please contact the undersigned at (336)
722-9999.
Sincerely,
PROGRESS ENVIRONMENTAL GROUP, INC.
Joseph S. Lawson, III Jeffrey A. Ballsieper, L.G.
Director of Ecological Services Director of Environmental Services
NC Licensed 1653
Attachment: Groundwater Monitoring Report and Appendices
i
A EXECUTIVE SUMMARY
The site is located at 415 US Highway 117 in Burgaw, Pender County, North
Carolina. The site consists of a convenience store which stores petroleum
products in underground storage tanks (USTs) for retail sale. Seven USTs are
located at the site. Recently, a release was identified during equipment upgrade
activities. An excerpt from the Site Check Report prepared by Paragon
Environmental Consultants, Inc. and dated June 18, 2020 is below:
Please find enclosed a report summarizing the site check activities for the fill ports of all seven of the USTs at the above referenced facility. A site inspection conducted by the DEQ – UST Section of the tank system at the Go Gas 14 noted that the fill ports were not in compliance on the four gasoline USTs and the three diesel USTs at this facility. On May 27, 2020 Paragon Environmental Consultants, Inc. mobilized to the site to perform assessment sampling at each of the spill buckets on the four 12,000 gallon gasoline USTs, the one 12,000 gallon diesel UST, and the two 10,000 gallon diesel USTs. The results of our findings are summarized herein.
Soil samples (two from each tank) were obtained from the [sic] directly above the top of the USTs immediately adjacent to the containment sumps that contained the fill ports at this subject facility. Paragon collected samples from both the south and north sides of each of these containment sumps at depths of approximately three feet below surface grade. The gasoline tank samples were labeled as spill bucket #1 through #4 (with samples A and B obtained from each spill bucket) respectively from the north gasoline tank (tank nearest to US Highway 117 N.) to the south gasoline tank (tank nearest to the building). Soil samples were also collected from the three diesel USTs. The samples from spill bucket #5 were labeled with the north and south sides identified the same as with the gasoline tank samples. The samples from spill bucket #6 and spill bucket #7 were collected from both the east and west sides of each of these containment sumps. Figure 1 illustrates the site layout and the soil sample locations.
All of the soil samples obtained adjacent to the fill port containment sumps were submitted to Meritech, Inc. for laboratory analysis by EPA Method 5030. This method tests for total petroleum hydrocarbons (TPH) from low boiling-point fuels such as gasoline, aviation fuel, and gasohol. The current action level for Method 5030 constituents is 50 milligrams per kilogram (mg/kg). The soil samples obtained from the diesel portions of the tank system were also analyzed by Meritech, Inc. according to EPA Method 3550. This method tests for TPH from high boiling-point fuels such as diesel, kerosene, and fuel oil. The current action level for Method 3550 constituents is 100 mg/kg. Sample SB1-A was also analyzed by VPH methods for BTEX as required by the current UST Section guidelines if a TPH concentration exceeding 50 mg/kg is detected by Method 5030.
The soil sample from the north side of the spill bucket containment sump on tank #1 (SB1-A) indicated a TPH concentration of 738 mg/kg according to EPA Method 5030. This concentration exceeds the DEQ action limit for this
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TPH method. The sample from the south side of this same spill bucket was below the action limit for Method 5030 TPH. All of the other soil samples from the gasoline USTs at the Go Gas 14 were below the laboratory detection limit according to EPA Method 5030. The analytical results for the diesel UST soil samples at 415 US Highway 117 N. were below the detection limits by EPA Methods 5030 and 3550. Table 1 summarizes the TPH analytical results for this project. Sample SB1-A showed Benzene at a concentration of 1.53 mg/kg which is above the lowest Maximum Soil Contaminant Concentration (MSCC) of 0.0056 mg/kg. Toluene was detected at a concentration of 35.5 mg/kg, exceeding the lowest MSCC of 4.3 mg/kg. Ethylbenzene was detected at a level of 25 mg/kg, above its lowest MSCC of 4.9 mg/kg. Xylenes were reported at a concentration of 133.5 mg/kg, which exceeds the lowest MSCC of 4.6 mg/kg. Table 2 summarizes the soil analytical results for the BTEX site check sample. Attachment A contains a copy of the laboratory analytical report and the chain-of-custody record for the samples obtained by Paragon on May 27, 2020.
On November 21, 2022, Progress collected groundwater samples from the existing
monitoring wells. The groundwater samples were collected using a disposable bailer and
new length of cord and transferred to laboratory containers. The groundwater samples
collected from monitoring wells MW-2 through MW-5 were analyzed for volatile organic
compounds (VOCs) using Standard Method 6200B. Note that monitoring well MW-1
contained approximately 0.4 feet of free product and, therefore, was not sampled.
Laboratory analysis of the groundwater samples collected from monitoring wells MW-2
through MW-5 did not detect VOCs at concentrations exceeding the laboratory detection
limits and/or the NC2LGWQS.
Based on the results of the groundwater sampling event, Progress makes the following
conclusions:
NCDEQ has classified the site as “high risk” based on the presence of an
identified water-supply well used for drinking water within 1,000 feet of the
site. Municipal water is available to all properties in the vicinity of the site.
Based on review of the laboratory data from the previous assessment
activities, soil impacted above the Soil-to-Groundwater MSCCs and Residential
Soil Cleanup Levels persists in the vicinity of monitoring well MW-1. Soil
contamination in excess of the Industrial/Commercial Soil Cleanup Levels was
not identified at the site.
Laboratory analysis of the groundwater samples collected from monitoring
wells MW-2 through MW-5 did not detect targeted compounds above the
laboratory detection limits and/or their respective NC2LGWQS.
Free product has historically been measured in monitoring well MW-1 (April
2021). During the November 21, 2022 sampling event, Progress measured
approximately 0.4 feet of free product in monitoring well MW-1.
iii
Based on the findings of this Groundwater Monitoring Report, Progress makes the
following recommendations:
Groundwater flow appears to be flowing radially beneath the site, but generally is
expected to flow to the west-southwest in the vicinity of the site towards Osgood
Branch;
Soil impacted above the Soil-to-Groundwater MSCCs and the Residential Soil
Cleanup Levels appears to be located proximal to the tank pit;
During the November 21, 2022 sampling event, Progress measured approximately
0.4 feet of free product in monitoring well MW-1;
The site meets the criteria for a High Risk site based on the presence of one active
water-supply well being identified within 1,000 feet of the source area;
Prior to a real estate transaction occurring, a Notice of Residual Petroleum (NORP)
must be filed with the Pender County Register of Deeds. Progress recommends
that a copy of this report be submitted to the NCDEQ; and,
Based on the presence of free product, Progress recommends implementing an
Aggressive Fluid Vapor Recovery (AFVR) event at the site.
Progress will not complete additional activities at the site unless pre-approved by the
NCDEQ.
Groundwater Monitoring Report December 1, 2022 GoGas No. 14 Progress Project No. QUA403N.GW
415 US Highway 117
Burgaw, Pender County, North Carolina
1
Groundwater Monitoring Report
B SITE IDENTIFICATION
Date of Report: December 1, 2022
Facility I.D.: 00-0-0000032629
UST Incident Number (if known): 47115
Site Name: GoGas No. 14
Site Location: 415 US Highway 117, Burgaw, North Carolina 28425
Nearest City/Town: Burgaw, North Carolina County: Pender
UST Owner: Quality Oil Company, LLC
Address: 1540 Silas Creek Parkway, Winston-Salem, North Carolina 27127 Phone: [phone]
UST Operator: Quality Oil Company, LLC
Address: 1540 Silas Creek Parkway, Winston-Salem, North Carolina 27127 Phone: [phone]
Property Owner: Quality Oil Company, LLC
Address: 1540 Silas Creek Parkway, Winston-Salem, North Carolina 27127 Phone: [phone]
Property Occupant: GoGas No. 14
Address: 415 US Highway 117, Burgaw, North Carolina 28425 Phone: [phone]
Consultant/Contractor: Progress Environmental Group, Inc.
Address: P.O. Box 5884, Winston-Salem, North Carolina 27113 Phone: [phone]
Attention: Mr. Jeffrey A. Ballsieper, L.G.
Analytical Laboratory: Pace Analytical Services, LLC Address: 9800 Kincey Avenue, Huntersville, North Carolina 28078 Phone: [phone]
Release Information
Date Discovered: June 18, 2020
Latitude: N 34.558353 Longitude: W 77.919450
Estimated Quantity of Release: Unknown
Cause of Release: Unknown
Source of Release (e.g., Piping/UST): Gasoline UST Spill Bucket
Sizes and contents of UST system(s) from which the release occurred): One 12,000-gallon gasoline fuel
UST (Table B-1).
Risk Classification: High
Land Use Category: Industrial/Commercial
I, Jeffrey A. Ballsieper, a Licensed Geologist for Progress Environmental Group, Inc., do certify that the
information contained in this report is correct and accurate to the best of my knowledge.
_____________________________________
Jeffrey A. Ballsieper, L.G.
Director of Environmental Services
Progress Environmental Group, Inc. is licensed to practice geology in North Carolina. The certification
number of the corporation is C-552
Groundwater Monitoring Report December 1, 2022 GoGas No. 14 Progress Project No. QUA403N.GW
415 US Highway 117
Burgaw, Pender County, North Carolina
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C TABLE OF CONTENTS
A EXECUTIVE SUMMARY .................................................................................................. I
B SITE IDENTIFICATION ................................................................................................ 1
C TABLE OF CONTENTS ................................................................................................... 2
D SITE HISTORY AND CHARACTERIZATION ................................................................. 4
E PREVIOUS INVESTIGATIONS .................................................................................... 6
1.PHASE I LIMITED SITE ASSESSMENT REPORT ......................................................................... 6
2.LETTER REPORT ..................................................................................................................... 7
3.ADDITIONAL RISK ASSESSMENT REPORT................................................................................ 7
4.GROUNDWATER MONITORING REPORT ................................................................................... 9
5.OTHER SITE ACTIVITIES .......................................................................................................10
F PRESENTATION OF CURRENT SITE ASSESSMENT INFORMATION/COMPARISON TO
HISTORICAL ASSESSMENT INFORMATION ................................................................... 10
SITE GEOLOGY AND HYDROGEOLOGY ......................................................................... 11
G FREE PRODUCT REMOVAL ........................................................................................ 12
H MONITORED NATURAL ATTENUATION/NATURAL SOURCE ZONE DEPLETION
STATUS ............................................................................................................................... 12
I CONCLUSIONS ............................................................................................................ 13
K FIGURES
L TABLES
M APPENDICES
N REFERENCES
FIGURES
Figure 1 – Topographic Site Map
Figure 2 – Site Map
Figure 3 – Surrounding Property Owners Map
Figure 4 – Receptor Map
Figure 5 – Zoning Map
Figure 6 – Wellhead Protection Map
Figure 7 – Groundwater Analytical Results Map
Figure 8 – Groundwater Flow Direction Map
Groundwater Monitoring Report December 1, 2022 GoGas No. 14 Progress Project No. QUA403N.GW
415 US Highway 117
Burgaw, Pender County, North Carolina
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TABLES Table B-1 – Site History, UST/AST System Information Table B-2 – Site History, UST Owner/Operator Information
Table B-4 – Summary of Detected Groundwater Analytical Results
Table B-6 – Surrounding Property Owners Information
Table B-7 – Well Construction Information
APPENDICES
Appendix A – Sampling Sheets
Appendix B – Laboratory Test Reports and Chains-of-Custody
Groundwater Monitoring Report December 1, 2022 GoGas No. 14 Progress Project No. QUA403N.GW
415 US Highway 117
Burgaw, Pender County, North Carolina
4
D SITE HISTORY AND CHARACTERIZATION
The site is located at 415 US Highway 117 in Burgaw, Pender County, North Carolina.
The site consists of a convenience store which stores petroleum products in
underground storage tanks (USTs) for retail sale. Seven USTs are located at the site.
Recently, a release was identified during equipment upgrade activities. An excerpt
from the Site Check Report prepared by Paragon Environmental Consultants, Inc. and
dated June 18, 2020 is below:
Please find enclosed a report summarizing the site check activities for the fill ports of all seven of the USTs at the above referenced facility. A site inspection conducted by the DEQ – UST Section of the tank system at the Go Gas 14 noted that the fill ports were not in compliance on the four gasoline USTs and the three diesel USTs at this facility. On May 27, 2020 Paragon Environmental Consultants, Inc. mobilized to the site to perform assessment sampling at each of the spill buckets on the four 12,000 gallon gasoline USTs, the one 12,000 gallon diesel UST, and the two 10,000 gallon diesel USTs. The results of our findings are summarized herein.
Soil samples (two from each tank) were obtained from the [sic] directly above the top of the USTs immediately adjacent to the containment sumps that contained the fill ports at this subject facility. Paragon collected samples from both the south and north sides of each of these containment sumps at depths of approximately three feet below surface grade. The gasoline tank samples were labeled as spill bucket #1 through #4 (with samples A and B obtained from each spill bucket) respectively from the north gasoline tank (tank nearest to US Highway 117 N.) to the south gasoline tank (tank nearest to the building). Soil samples were also collected from the three diesel USTs. The samples from spill bucket #5 were labeled with the north and south sides identified the same as with the gasoline tank samples. The samples from spill bucket #6 and spill bucket #7 were collected from both the east and west sides of each of these containment sumps. Figure 1 illustrates the site layout and the soil sample locations.
All of the soil samples obtained adjacent to the fill port containment sumps were submitted to Meritech, Inc. for laboratory analysis by EPA Method 5030. This method tests for total petroleum hydrocarbons (TPH) from low boiling-point fuels such as gasoline, aviation fuel, and gasohol. The current action level for Method 5030 constituents is 50 milligrams per kilogram (mg/kg). The soil samples obtained from the diesel portions of the tank system were also analyzed by Meritech, Inc. according to EPA Method 3550. This method tests for TPH from high boiling-point fuels such as diesel, kerosene, and fuel oil. The current action level for Method 3550 constituents is 100 mg/kg. Sample SB1-A was also analyzed by VPH methods for BTEX as required by the current UST Section guidelines if a TPH concentration exceeding 50 mg/kg is detected by Method 5030.
The soil sample from the north side of the spill bucket containment sump on tank #1 (SB1-A) indicated a TPH concentration of 738 mg/kg according to EPA Method 5030. This concentration exceeds the DEQ action limit for this TPH method. The sample from the south side of this same spill bucket was below the action limit for Method 5030 TPH. All of the other soil samples from the gasoline USTs at
Groundwater Monitoring Report December 1, 2022 GoGas No. 14 Progress Project No. QUA403N.GW
415 US Highway 117
Burgaw, Pender County, North Carolina
5
the Go Gas 14 were below the laboratory detection limit according to EPA Method 5030. The analytical results for the diesel UST soil samples at 415 US Highway 117 N. were below the detection limits by EPA Methods 5030 and 3550. Table 1 summarizes the TPH analytical results for this project. Sample SB1-A showed Benzene at a concentration of 1.53 mg/kg which is above the lowest Maximum Soil Contaminant Concentration (MSCC) of 0.0056 mg/kg. Toluene was detected at a concentration of 35.5 mg/kg, exceeding the lowest MSCC of 4.3 mg/kg. Ethylbenzene was detected at a level of 25 mg/kg, above its lowest MSCC of 4.9 mg/kg. Xylenes were reported at a concentration of 133.5 mg/kg, which exceeds the lowest MSCC of 4.6 mg/kg. Table 2 summarizes the soil analytical results for the BTEX site check sample. Attachment A contains a copy of the laboratory analytical report and the chain-of-custody record for the samples obtained by Paragon on May 27, 2020.
Table B-1 Site History, UST/AST System Information
Tank No. InstallationDate Capacity(gallons)
Construction Materials Tanks and Piping
Dimensions Contents Previous Contents
T1 1994 12,000 Single Wall Steel 8’ x 32’ Gasoline NA
T2 1994 12,000 Single Wall Steel 8’ x 32’ Gasoline NA
T3 1994 12,000 Single Wall Steel 8’ x 32’ Gasoline NA
T4 1994 12,000 Single Wall Steel 8’ x 32’ Gasoline NA
T5 1994 10,0000 Single Wall Steel 8’ x 29’6” Diesel NA
T6 1994 10,000 Single Wall Steel 8’ x 29’6” Diesel NA
T7 2006 12,000 Single Wall Steel 8’ x 32” Diesel NA
Table B-2 Site History, UST Owner/Operator Information
Owner’s Name Address Phone Number Dates of Ownership
Quality Oil Company, LLC P.O. Box 2736Winston-Salem, NC 27102
[phone] 2015 - Present
Groundwater Monitoring Report December 1, 2022 GoGas No. 14 Progress Project No. QUA403N.GW
415 US Highway 117
Burgaw, Pender County, North Carolina
6
E PREVIOUS INVESTIGATIONS
1.Phase I Limited Site Assessment Report
Progress mailed 40 water-supply well questionnaires to the property owners within a 500-foot
radius of the site. Fifteen of the questionnaires have been completed and returned at the time of
this report. Progress also completed a visual reconnaissance within 1,500 feet of the site.
Progress identified evidence of two water-supply wells during the vehicular reconnaissance of
accessible properties within 1,000 feet of the site or based on the returned questionnaires. Only
one well located at 807 Ridgewood Avenue appears to be utilized for drinking within 1,000 feet of
the subject site.
Based on the relative shallow depth to groundwater (approximately two feet below land
surface), Progress did not collect a soil sample for laboratory analysis as part of this
assessment.
On October 15, 2020, Progress was on-site to install and sample one, two-inch monitoring well
(MW-1) to an approximate depth of 15 feet bls with 10 feet of 0.01 slotted Schedule 40 PVC
screen using the hollow stem auger drilling method. However, it was discovered that a
monitoring well was identified proximal to the anticipated installation location. Following
consultation with North Carolina Department of Environmental Quality (NCDEQ) personnel, it
was determined that it would be prudent to collect and test a groundwater sample from the
existing monitoring well. Progress collected a groundwater sample from the monitoring well
using a disposable bailer and new length of cord and transferred the sample to the laboratory
containers into a cooler packed with ice. The groundwater sample collected from monitoring
well MW-1 was analyzed for volatile organic compounds (VOCs) using Standard Method 6200B,
for ethylene dibromide (EDB) using EPA Method 504.1, for lead using the Standard Method, and
for volatile petroleum hydrocarbons (VPH) using the Massachusetts Department of
Environmental Protection (MADEP) Method.
Laboratory analysis of the groundwater sample collected from monitoring well MW-1 detected
benzene (245 µg/L), naphthalene (35.2 µg/L), C5-C8 Aliphatics (2,180 µg/L), C9-C12 Aliphatics
(2,070 µg/L), and C9-C10 Aromatics (799 µg/L) at concentrations exceeding their respective
North Carolina 2L Groundwater Quality Standards (NC2LGWQS). Please note, none of the
detected concentrations exceed the applicable Gross Contamination Levels (GCLs).
Based on the results of the receptor survey and groundwater sampling activities, Progress made
the following conclusions:
1.The site meets the criteria for a High Risk site based on the presence of one active
water-supply well being identified within 1,000 feet of the source area.
2.Public water is readily available to properties located along Jacksonville Highway and
North Carolina Highway 117.
3.Based on the shallow depth to groundwater (approximately two feet below land surface)
soil samples were not collected as part of this assessment.
Groundwater Monitoring Report December 1, 2022 GoGas No. 14 Progress Project No. QUA403N.GW
415 US Highway 117
Burgaw, Pender County, North Carolina
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4.Laboratory analysis of the groundwater sample collected from monitoring well MW-1
detected benzene (245 µg/L), naphthalene (35.2 µg/L), C5-C8 Aliphatics (2,180 µg/L),
C9-C12 Aliphatics (2,070 µg/L), and C9-C10 Aromatics (799 µg/L) at concentrations
exceeding their respective NC2LGWQS. Please note, none of the detected
concentrations exceed the applicable GCLs.
Progress recommends providing a copy of this report to the Wilmington Regional Office of
the NCDEQ, Division of Waste Management, UST Section.
2.Letter Report
Progress was on-site on April 8, 2021, to sample monitoring well MW-1, installed proximal to the
UST basin at the site by others. Progress measured the depth to water in the well at 2.22 feet
from the top of casing. A strong odor was noted on the water level probe once it was removed
from the monitoring well. Progress slowly inserted a disposable, dedicated bailer into the well,
with care taken not to fully submerse the bailer into the water column. Following removal of the
bailer it was determined that approximately eight inches of free product was present within the
monitoring well. Based on the presence of measurable free product, a groundwater sample was
not collected from the monitoring well.
3.Additional Risk Assessment Report
On June 24, 2021, 3D Environmental Investigations, LLC, mobilized a track-mounted drill rig to
install three soil borings and construct three monitoring wells (MW-2 through MW-4, Figure 2).
The purpose of the assessment was to also install and sample a deep monitoring well. Because
the site is located within the Coastal Plain, it is imperative that any subsurface assessment does
not promote the cross contamination of subsurface aquifers that are separated by a continuous
and competent confining layer (i.e. clay). Progress noted the presence of a clay layer in the
subsurface at the site that extends from approximately four feet to the terminus of the shallow
Type II monitoring wells (fifteen feet bls). Following discussions with NCDEQ personnel it was
determined that the installation of a Type III deep monitoring well was not necessary at this time.
Please note, Progress did collect and screen soil samples from the location of the proposed deep
monitoring well (DW-1). Progress collected soil samples at 2.5 foot intervals beginning at the
ground surface to 15 feet below land surface (bls). The soil borings were advanced using the
direct push drilling method.
Laboratory analysis of the soil samples collected from MW-2 and MW-4 did not exhibit detectable
concentrations of TPH-G or TPH-D. Laboratory analysis of the soil sample collected from MW-3
detected TPH-D (9.5 mg/Kg) at a concentration that does not exceed its North Carolina Action
Level of 100 mg/Kg. Laboratory analysis of the soil sample collected from DW-1 detected TPH-G
(10,500 mg/Kg) and TPH-D (542 mg/Kg) at concentrations that exceed the respective North
Carolina Action Levels of 50 mg/Kg of 100 mg/Kg. Laboratory analysis of the soil sample
collected from DW-1 (proximal to monitoring well MW-1) also indicated targeted compounds at
concentrations above their respective Soil-to-Groundwater Maximum Soil Contaminant
Concentrations (MSCCs), with the concentrations of C5-C8 Aliphatics and C9-C10 Aromatics
Groundwater Monitoring Report December 1, 2022 GoGas No. 14 Progress Project No. QUA403N.GW
415 US Highway 117
Burgaw, Pender County, North Carolina
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exceeding their respective Residential Cleanup Levels. Please note, none of the petroleum
hydrocarbons or VPH ranges exceed their respective Industrial/Commercial Cleanup Levels.
On June 24, 2021, 3D Environmental Investigations, LLC, installed three, two-inch monitoring
wells (MW-2 through MW-4) to approximate depths of 15 feet bls. The wells were installed
using the direct push drilling method. Progress returned to the site on July 1, 2021 to collect
groundwater samples from the monitoring wells. The groundwater sample collected from
monitoring well MW-1 was analyzed for VOCs using Standard Method 6200B, for VPH using the
MADEP Method, for ethylene di-bromide (EDB) using EPA Method 504.1, and for lead.
Laboratory analysis of the groundwater samples collected from monitoring wells MW-2, MW-3,
and MW-4 did not detect targeted compounds above their respective NC2LGWQS, with the
exception of lead in the groundwater sample collected from monitoring well MW-2. Laboratory
analysis of the groundwater samples collected from monitoring well MW-1 detected several
targeted compounds above their respective NC2LGWQS. Please note, none of the compounds
were detected at concentrations exceeding the applicable GCL.
Based on the findings of this Additional Risk Assessment Report, Progress made the following
conclusions and recommendations:
Groundwater flow beneath the site appears to be flowing radially beneath the site, but
generally is expected to flow to the west-southwest in the vicinity of the site towards
Osgood Branch;
Soil impacted above the Soil-to-Groundwater MSCCs and the Residential Soil Cleanup
Levels appears to be located proximal to the former fuel dispensers;
Groundwater contamination in excess of the NC2LGWQS persists in on-site monitoring
well MW-1. Compounds were not detected in the groundwater sample collected from
monitoring well MW-1 in excess of their applicable GCLs. Only lead was detected at a
concentration exceeding it NC2LGWQS in the groundwater sample collected from
monitoring well MW-2;
The site meets the criteria for a High Risk site based on the presence of one active
water-supply well being identified within 1,000 feet of the source area;
Prior to a real estate transaction occurring, a Notice of Residual Petroleum (NORP) must
be filed with the Pender County Register of Deeds. Progress recommends that a copy of
this report be submitted to the NCDEQ;
Discuss with NCDEQ personnel appropriate corrective actions to achieve expeditious
regulatory closure of the site; and,
Provide a copy of this report to the property owner.
Groundwater Monitoring Report December 1, 2022 GoGas No. 14 Progress Project No. QUA403N.GW
415 US Highway 117
Burgaw, Pender County, North Carolina
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4.Groundwater Monitoring Report
On September 7, 2021, Bridger Drilling, LLC, installed one additional, two-inch monitoring well
(MW-5) to approximate depths of 15 feet bls. The well was installed using the direct push
drilling method. The monitoring well was constructed with 10 feet of 0.01 slotted Schedule 40
PVC screen. Progress collected groundwater samples from the existing monitoring wells and
the newly installed monitoring well. The groundwater samples were collected using a disposable
bailer and new length of cord and transferred to laboratory containers. The groundwater
sample collected from monitoring well MW-5 was analyzed for VOCs using Standard Method
6200B, for VPH using the MADEP Method, for ethylene di-bromide (EDB) using EPA Method
504.1, and for lead. The groundwater samples collected from monitoring wells MW-1 through
MW-4 were analyzed for VOCs using Standard Method 6200B and EDB by EPA Method 504.1.
Laboratory analysis of the groundwater sample collected from monitoring well MW-1 detected benzene (4,110 µg/L), ethylbenzene (840 µg/L), naphthalene (316 µg/L), methyl tert-butyl ether (42.7 µg/L), toluene (3,640 µg/L), 1,2,4-trimethylbenzene (1,380 µg/L), total xylenes (4,397 µg/L) at concentrations exceeding their respective North Carolina 2L Groundwater Quality Standards (NC2LGWQS). Please note, the concentrations of detected compounds did not exceed the applicable GCLs.
Laboratory analysis of the groundwater sample collected from monitoring wells MW-2 through
MW-5 did not detect VOCs (including EDB) at concentrations exceeding the laboratory detection
limits and/or the NC2LGWQS. Additionally, the groundwater sample collected from monitoring
well MW-5 did not exhibit concentrations of lead or VPH ranges that exceed their respective
NC2LGWQS.
Based on the results of the groundwater sampling event, Progress made the following
conclusions:
NCDEQ has classified the site as “high risk” based on the presence of an identified
water-supply well used for drinking water within 1,000 feet of the site. Municipal
water is available to all properties in the vicinity of the site.
Based on review of the laboratory data from the previous assessment activities, soil
impacted above the Soil-to-Groundwater MSCCs and Residential Soil Cleanup Levels
persists in the vicinity of monitoring well MW-1. Soil contamination in excess of the
Industrial/Commercial Soil Cleanup Levels was not identified at the site.
Laboratory analysis of the groundwater samples collected from monitoring wells
MW-2 through MW-5 did not detect targeted compounds above their respective
NC2LGWQS. Laboratory analysis of the groundwater sample collected from
monitoring well MW-1 detected several targeted compounds above their respective
NC2LGWQS. Please note, none of the compounds were detected at concentrations
exceeding the applicable GCL.
Free product has historically been measured in monitoring well MW-1; however,
during the most recent sampling event free product was not measured in monitoring
well MW-1.
Groundwater Monitoring Report December 1, 2022 GoGas No. 14 Progress Project No. QUA403N.GW
415 US Highway 117
Burgaw, Pender County, North Carolina
10
Based on the findings of this Groundwater Monitoring Report, Progress made the following
recommendations:
Groundwater flow beneath the site appears to be flowing radially beneath the site, but
generally is expected to flow to the west-southwest in the vicinity of the site towards
Osgood Branch;
Soil impacted above the Soil-to-Groundwater MSCCs and the Residential Soil Cleanup
Levels appears to be located proximal to the former fuel dispensers;
Groundwater contamination in excess of the NC2LGWQS persists in on-site monitoring
well MW-1. Compounds were not detected in the groundwater sample collected from
monitoring well MW-1 in excess of their applicable GCLs;
The site meets the criteria for a High Risk site based on the presence of one active
water-supply well being identified within 1,000 feet of the source area;
Prior to a real estate transaction occurring, a Notice of Residual Petroleum (NORP) must
be filed with the Pender County Register of Deeds. Progress recommends that a copy of
this report be submitted to the NCDEQ; and,
Discuss with NCDEQ personnel appropriate corrective actions to achieve expeditious
regulatory closure of the site.
5.Other Site Activities
Progress has not conducted additional activities at the subject site.
F PRESENTATION OF CURRENT SITE ASSESSMENT INFORMATION/COMPARISON
TO HISTORICAL ASSESSMENT INFORMATION
According to the Geologic Map of North Carolina (1985), the subject property is situated in the
Coastal Plain Physiographic Province of North Carolina. The Coastal Plain is composed of seven
terraces, each representing a former level of the Atlantic Ocean. Soils in this area generally consist
of sedimentary materials transported from other areas by the ocean or rivers. These deposits vary
in thickness from a thin veneer along the western edge of the region to more than 10,000 feet
near the coast. The sedimentary deposits of the Coastal Plain rest upon consolidated rocks similar
to those underlying the Piedmont and Mountain Physiographic Provinces.
Recharge to the water table is primarily by precipitation infiltrating the upper soils and percolating
downward, under the influence of gravity, to the groundwater table. Typically, the water table is
not a level surface, but a subdued reflection of the land surface. However, the depth to the water
table is not constant, and depends on many factors, which include the amount of rainfall, the
permeability of the soil, and the amount of groundwater being pumped in the area.
Groundwater Monitoring Report December 1, 2022 GoGas No. 14 Progress Project No. QUA403N.GW
415 US Highway 117
Burgaw, Pender County, North Carolina
11
Based on our review of the topographic map and on-site observation, the site is located on a
ridge. Groundwater generally flows in directions sub-parallel to the ground surface slopes and
under the influence of gravity toward points of discharge such as creeks, swamps, drainage
swales, or pumped groundwater wells. Based on topographic inference, groundwater beneath
the site most likely flows to the west-southwest. Osgood Branch is located approximately 1,580
feet to the west-southwest of the source area (Figure 1).
Site Geology and Hydrogeology
Soils encountered during the site investigative work have included fine sand near the surface,
with tight clay from approximately two to four feet bls to the terminus of the newly installed
monitoring wells (15 feet bls).
Determination of Groundwater Flow Direction
The depth to the groundwater surface in each of the monitoring wells was measured prior to well
purging using a decontaminated electric sounder. The top of casings of each of the monitoring
wells were surveyed by Progress using a relative benchmark (top of casing for monitoring well
MW-1) that was arbitrarily given an elevation of 100 feet. The elevations of the monitoring wells
and the groundwater surface are both relative to that benchmark. The relative groundwater
elevations are shown on Table B-7 and the estimated groundwater flow direction appears to be
radial beneath the site (Figure 8).
Estimating Groundwater Velocity
Groundwater elevation data were collected during the groundwater monitoring activities. Relative
groundwater elevations are depicted on Figure 8. Based on information collected during the field
activities, the groundwater flow direction beneath the site appears to be radial in the vicinity of the
source area, perhaps influenced by the more conductive material located within the tank basin.
However, the general groundwater flow direction in the vicinity of the site would be expected to
flow to the west-southwest towards Osgood Branch.
As determined during the completion of the slug tests and utilizing the Bouwer and Rice
Method, the hydraulic conductivity was calculated as 0.0016 ft/day.
The average linear groundwater flow velocity was calculated based on the measured water table
gradient (0.042 ft/ft, gradient presented from potentiometric map), an average hydraulic
conductivity of 0.0016 ft/day, and an estimated value of 0.30 for effective porosity. The average
linear groundwater flow velocity (v) was calculated according to the following equation:
v = (K dh/dl)/ne , where
K = Hydraulic Conductivity
dh/dl = Hydraulic gradient
ne = effective porosity
Based upon this calculation, the average linear velocity was calculated as 0.00084 ft/day or
0.3066 ft/year. It is important to note that the assumed value for effective porosity is an estimate
Groundwater Monitoring Report December 1, 2022 GoGas No. 14 Progress Project No. QUA403N.GW
415 US Highway 117
Burgaw, Pender County, North Carolina
12
based on predominant soil types encountered during construction of monitoring wells at the site.
It should also be noted that the calculated velocity is an approximate average for the surficial
aquifer in the vicinity of the former UST system.
Groundwater Sampling Activities
On November 21, 2022, Progress collected groundwater samples from the existing monitoring
wells. The groundwater samples were collected using a disposable bailer and new length of
cord and transferred to laboratory containers. The groundwater samples collected from
monitoring wells MW-2 through MW-5 were analyzed for VOCs using Standard Method 6200B.
Note that monitoring well MW-1 contained approximately 0.4 feet of free product and,
therefore, was not sampled.
Laboratory analysis of the groundwater sample collected from monitoring wells MW-2 through
MW-5 did not detect VOCs at concentrations exceeding the laboratory detection limits and/or
the NC2LGWQS.
A summary of the groundwater analytical results is included in Table B-4. Copies of the
laboratory data sheets and chain-of-custody record are included in the Appendix.
Well construction information is provided in Table B-7.
The laboratory analytical results are summarized on Figure 7.
G FREE PRODUCT REMOVAL
On November 21, 2022, Progress measured approximately 0.4 feet of free product in
monitoring well MW-1. Free product removal activities were not part of this groundwater
assessment.
H MONITORED NATURAL ATTENUATION/NATURAL SOURCE ZONE DEPLETION
STATUS
Progress collected groundwater samples from the on-site monitoring wells MW-2 through MW-5
on November 21, 2022. Monitoring well MW-1 was not sampled as approximately 0.4 feet of
free product was measured in the well at the time of gauging. Remedial actions have not been
completed at the site to date.
Laboratory Analytical Results
Pace analyzed the groundwater samples for VOCs by Standard Method 6200B including ethanol,
MTBE, and IPE. A summary of the groundwater analytical results is presented in Table B-4 and
on Figure 7.
Laboratory analysis of the groundwater samples collected from monitoring wells MW-2 through
MW-5 did not detect petroleum-related compounds at concentrations that exceed the laboratory
Groundwater Monitoring Report December 1, 2022 GoGas No. 14 Progress Project No. QUA403N.GW
415 US Highway 117
Burgaw, Pender County, North Carolina
13
detection limits and/or their respective NC2LGWQS. Monitoring well MW-1 contained
approximately 0.4 feet of free product and, therefore, was not sampled.
The groundwater contaminant plume appears to be migrating in a radial direction beneath the
site, but generally is expected to flow to the west-southwest in the vicinity of the site towards
Osgood Branch.
I CONCLUSIONS
Based on the results of the groundwater sampling event, Progress makes the following
conclusions:
NCDEQ has classified the site as “high risk” based on the presence of an identified
water-supply well used for drinking water within 1,000 feet of the site. Municipal
water is available to all properties in the vicinity of the site.
Based on review of the laboratory data from the previous assessment activities, soil
impacted above the Soil-to-Groundwater MSCCs and Residential Soil Cleanup Levels
persists in the vicinity of monitoring well MW-1. Soil contamination in excess of the
Industrial/Commercial Soil Cleanup Levels was not identified at the site.
Laboratory analysis of the groundwater samples collected from monitoring wells
MW-2 through MW-5 did not detect targeted compounds above the laboratory
detection limits and/or their respective NC2LGWQS.
Free product has historically been measured in monitoring well MW-1 (April 2021).
During the November 21, 2022 sampling event, Progress measured approximately
0.4 feet of free product in monitoring well MW-1.
Based on the findings of this Groundwater Monitoring Report, Progress makes the following
recommendations:
Groundwater flow appears to be flowing radially beneath the site, but generally is
expected to flow to the west-southwest in the vicinity of the site towards Osgood
Branch;
Soil impacted above the Soil-to-Groundwater MSCCs and the Residential Soil Cleanup
Levels appears to be located proximal to the UST pit;
During the November 21, 2022 sampling event, Progress measured approximately 0.4
feet of free product in monitoring well MW-1;
The site meets the criteria for a High Risk site based on the presence of one active
water-supply well being identified within 1,000 feet of the source area;
Groundwater Monitoring Report December 1, 2022 GoGas No. 14 Progress Project No. QUA403N.GW
415 US Highway 117
Burgaw, Pender County, North Carolina
14
Prior to a real estate transaction occurring, a Notice of Residual Petroleum (NORP) must
be filed with the Pender County Register of Deeds. Progress recommends that a copy of
this report be submitted to the NCDEQ; and,
Based on the presence of free product, Progress recommends implementing an
Aggressive Fluid Vapor Recovery (AFVR) event at the site.
Progress will not complete additional activities at the site unless pre-approved by the NCDEQ.
Groundwater Monitoring Report December 1, 2022 GoGas No. 14 Progress Project No. QUA403N.GW
415 US Highway 117
Burgaw, Pender County, North Carolina
15
J STATEMENTS AND CERTIFICATION
1 Enter the date the monitoring report was due N/A._ Will this report be submitted after
the established due date?
YES NO
2 Was any required information from the above template missing from this report?YES NO
3 If applicable, will any of the proposed attenuation milestones under the schedule
approved in the Corrective Action Plan not be met? (within a reasonable margin of error)
YES NO
4 Does any known or suspected source zone soil contamination or free product remain outside of the assessed area that could be inhibiting natural attenuation? YES NO
5 Has there been an unexpected increase in contaminant mass sufficient to suggest a potential new release from a separate onsite or offsite source?
YES NO
6 Certification:
I, Jeffrey A. Ballsieper, a Licensed Geologist for Progress Environmental Group, Inc., do certify that the
information contained in this report is correct and accurate to the best of my knowledge.
Progress Environmental Group, Inc. is licensed to practice geology in North Carolina. The certification
number of the corporation is C-552.
K FIGURES
Figure 1
Topographic Site Map
Go Gas No. 14
415 US Highway 117
Burgaw, North Carolina
P.O. Box 5884
Winston-Salem, NC 27113
Telephone: [phone]
Fax: [phone]
www.progressenvironmental.com
Burgaw, N.C.
United States Department of the Interior
United States Geological Survey
7.5 Minute Series Topographic Map
Contour Interval: 10 feet
Scale: 1:24,000
Date: 2019
Project: Go Gas #14
Client: Quality Oil Company,
LLC
Progress Job #: QUA403N.GW
Date: December 2022
Site
MW-1 APPROXIMATE MONITORING WELL LOCATION ProgressENVIRONMENTAL GROUP, INC.JSLJABAS SHOWNDECEMBER 2022Figure 2.SKFP.O. Box 5884WINSTON-SALEM, NORTH CAROLINA 27113PHONE [phone] FAX [phone]FIGURE 2SITE MAPGOGAS NO. 14415 US HIGHWAY 117BURGAW, NORTH CAROLINAPROJECTQUA403N.GWMW-1
MW-2
MW-4
MW-3
MW-5
DECEMBER 2022
Figure 3
Surrounding Property Owners Site Map
Go Gas No. 14
415 US Highway 117
Burgaw, North Carolina
P.O. Box 5884
Winston-Salem, NC 27113
Telephone: [phone]
Fax: [phone]
www.progressenvironmental.com
Burgaw, N.C.
Pender County Geographic Information
System
https://gis.pendercountync.gov/
maps/
Date: 2020
Project: Go Gas #14
Client: Quality Oil Company,
LLC
Progress Job #: QUA403N.GW
Date: December 2022
Site 1
2
4
5
8
6
7
3
APPROXIMATE WATER SUPPLY WELL LOCATION ProgressENVIRONMENTAL GROUP, INC.JSLJABAS SHOWNDECEMBER 2022Figure 4.SKFP.O. Box 5884WINSTON-SALEM, NORTH CAROLINA 27113PHONE [phone] FAX [phone]FIGURE 4RECEPTOR MAPGOGAS No. 14415 US HIGHWAY 117, NORTHBURGAW, NORTH CAROLINAPROJECT1
2
1
3
4
3 MT. SINAI CHURCH - APPROXIMATE AREA OF PUBLIC ASSEMBLY
4 SMART START - APPROXIMATE AREA OF PUBLIC ASSEMBLY QUA403N.GWDECEMBER 2022
Figure 5
Zoning Map
Go Gas No. 14
415 US Highway 117
Burgaw, North Carolina
P.O. Box 5884
Winston-Salem, NC 27113
Telephone: [phone]
Fax: [phone]
www.progressenvironmental.com
Burgaw, N.C.
Pender County Geographic Information
System
https://gis.pendercountync.gov/maps/
Date: 2020
Project: Go Gas #14
Client: Quality Oil Company,
LLC
Progress Job #: QUA403N.GW
Date: December 2022
Site
R-7/R-12 Residential
B-2 Business
Figure 6
Wellhead Protection Area Map
Go Gas No. 14
415 US Highway 117
Burgaw, North Carolina
P.O. Box 5884
Winston-Salem, NC 27113
Telephone: [phone]
Fax: [phone]
www.progressenvironmental.com
Burgaw, N.C.
NCDEQ Wellhead Protection Program
https://nc.maps.arcgis.com/apps/webappvie
wer/index.html?id=5fee819063f241d685d5
69ef1be357cf
Date: 2021
Project: Go Gas #14
Client: Quality Oil Company,
LLC
Progress Job #: QUA403N.GW
Date: December 2022
Site
MW-1 APPROXIMATE MONITORING WELL LOCATION ProgressENVIRONMENTAL GROUP, INC.JSLJABAS SHOWNDECEMBER 2022Figure 7.SKFP.O. Box 5884WINSTON-SALEM, NORTH CAROLINA 27113PHONE [phone] FAX [phone]FIGURE 7GROUNDWATER ANALYTICAL RESULTS MAP415 US HIGHWAY 117BURGAW, NORTH CAROLINAPROJECTQUA403N.GWMW-1Free Product
MW-2Benzene 0.53 ug/LEthylbenzene 1.6 ug/LMTBE 0.60 ug/LToluene 5.1 ug/L1,2,4-Trimethylbenzene 3.5 ug/L1,3,5-Trimethylbenzene 0.92 ug/LTotal xylenes 10.5 ug/L
MW-4No Detections
MW-3Toluene 0.90 ug/L1,2,4-Trimethylbenzene 0.89 ug/LTotal xylenes 2.14 ug/L
MW-5Benzene 0.55 ug/LMTBE 1.6 ug/L
DECEMBER 2022
MW-2
(96.13)
APPROXIMATE MONITORING WELL LOCATION WITH RELATIVE GROUNDWATER ELEVATION ProgressENVIRONMENTAL GROUP, INC.JSLJABAS SHOWNDECEMBER 2022Figure 8.SKFP.O. Box 5884WINSTON-SALEM, NORTH CAROLINA 27113PHONE [phone] FAX [phone]FIGURE 8GROUNDWATER FLOW DIRECTION MAP415 US HIGHWAY 117BURGAW, NORTH CAROLINAPROJECTQUA403N.GWMW-1(97.14)
MW-2
(96.13)
MW-4
(97.84)
MW-3
(96.99)
97.096.8
97.696.4
ESTIMATED GROUNDWATER FLOW DIRECTION
GROUNDWATER CONTOUR (0.2 feet)
MW-5(97.68)
96.2
DECEMBER 2022NM = NOT MEASURED
L TABLES
Lead
USEPA
Method
504.1
Well Number Sampling Date Depth to Water
10/15/20 2.90 245 BQL 40.2 8.85 4.88 BQL 35.2 BQL 83 86.2 37.8 233 10.0 BQL 2,180 2,070 799
04/08/21 NM
07/01/21 1.68 3,840 BQL 807 48.6 36.1 BQL 273 127 7,370 1,190 289 5,050 9.1 BQL 54,400 13,600 4,240
09/07/21 1.96 4,110 BQL 840 56.5 32.9 42.8 316 BQL 3,640 1,380 334 4,397 NA BQL NA NA NA
05/11/22 2.09 4,790 BQL 1,130 74.7 45.8 47.1 366 176 2,610 1,390 330 5,003 NA NA NA NA NA
11/21/22 2.75(P)
3.15(W)
07/01/21 2.05 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 15.6 BQL BQL BQL BQL
09/07/21 2.25 BQL BQL BQL BQL BQL 0.60 BQL BQL BQL BQL BQL BQL NA BQL NA NA NA
05/11/22 2.68 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL NA NA NA NA NA
11/21/22 3.36 0.53 BQL 1.6 BQL BQL 0.60 BQL BQL 5.1 3.5 0.92 10.5 NA NA NA NA NA
07/01/21 1.73 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL
09/07/21 1.60 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL NA BQL NA NA NA
05/11/22 2.21 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL NA NA NA NA NA
11/21/22 3.14 BQL BQL BQL BQL BQL BQL BQL BQL 0.90 0.89 BQL 2.14 NA NA NA NA NA
07/01/21 1.50 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL
09/07/21 1.18 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL NA BQL NA NA NA
05/11/22 1.41 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL NA NA NA NA NA
11/21/22 1.96 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL NA NA NA NA NA
09/07/21 1.25 BQL 6.0 BQL BQL BQL BQL BQL BQL 0.57 BQL BQL BQL BQL BQL BQL BQL BQL
05/11/22 1.96 0.82 BQL BQL BQL BQL 0.62 BQL BQL BQL BQL BQL BQL NA NA NA NA NA
11/21/22 2.39 0.55 BQL BQL BQL BQL 1.60 BQL BQL BQL BQL BQL BQL NA NA NA NA NA
1 70 600 70 70 20 6 70 600 400 400 500 15 0.02 400 700 200
5,000 70,000 84,500 25,000 70,000 20,000 6,000 70,000 260,000 28,500 25,000 85,500 15,000 50 NS NS NS
Notes:
= Exceeds North Carolina 2L Groundwater Quality Standards (NC2LGWQS)
= Exceeds Gross Contamination Levels (GCLs)
Contaminant concentrations are reported in micrograms per liter (µg/L)
NE = Not Established
BQL = Below Quantitation Limts C5-C8 AliphaticsToluene1,3,5-TrimethylbenzeneMADEP Method VPH
TABLE B-4
SUMMARY OF DETECTED GROUNDWATER ANALYTICAL RESULTS
GROUDNWATER MONITORING REPORT
415 US HIGHWAY 117
BURGAW, PENDER COUNTY, NORTH CAROLINA
GOGAS NO. 14
INCIDENT NO. 47115
Analytical Method Standard Method 6200B IsopropyletherChlorofromNC2LGWQS
GCLs IsopropylbenzeneBenzeneContaminant of Concern
EthylbenzeneFree Productn-PropylbenzeneMTBE1,2,4-TrimethylbenzeneC9-C12 AliphaticsC9-C10 AromaticsTotal XylenesNaphthaleneLeadEDBMW-5
MW-1
Free Product
MW-2
MW-3
MW-4
Map ID Name Property Address Mailing Address
415 US Highway 117 1540 Silas Creek Parkway
Burgaw, North Carolina 28425 Winston-Salem, North Carolina 27127
701 NC Highway 53 E 11995 El Camino Real
Burgaw, North Carolina 28425 San Diego, California 92130
409 US Highway 117 110 N Phoenixville Pike, Suite 400
Burgaw, North Carolina 28425 Malvern, Pennsylvania 19355
308 N. Brickett Street 308 N. Brickett Street
Burgaw, North Carolina 28425 Burgaw, North Carolina 28425
609 Jacksonville Highway 1105 Harborway Place
Burgaw, North Carolina 28425 Wilmington, North Carolina 28405
608 North Carolina Highway 53 East 608 North Carolina Highway 53 East
Burgaw, North Carolina 28425 Burgaw, North Carolina 28425
614 North Carolina Highway 53 East PO Box 1464
Burgaw, North Carolina 28425 Wilmington, North Carolina 28402
501 US Highway 117 1468 Carolina Avenue
Burgaw, North Carolina 28425 Washington, North Carolina 27889
c/o Duff and Phelps
14850 Quorum Drive, Suite 500
Addison, Texas 75001
Map ID numbers are referenced to Figure 3
6
7
Duane Hodges Bell
Rich, Rich and Phillips
500 US Highway 117 Bypass
Burgaw, North Carolina 284256Boddie Noell Enterprises Inc.
Site Quality Oil Company
INCIDENT NO. 47115
TABLE B-6
SURROUNDING PROPERTY OWNERS
GROUNDWATER MONITORING REPORT
GOGAS NO. 14
415 US HIGHWAY 117
BURGAW, PENDER COUNTY, NORTH CAROLINA
1 RILP NC2 LP
DP Properties of NC LLC2
5 Thomas E. Tutherow
4 Blue Star Investments LLC
3 Beach Plus LLC
Well Screened Total Depth to Relative Groundwater
Monitoring Well Installation Diameter Interval Depth to Water Elevation Elevation
ID Date (inches)(feet)(feet)(feet TOC) (feet TOC )**(feet)
11/21/2022 11/21/2022
MW-1 Unknown 2 2.0-12.0*12 2.75(P)
3.15 (W)100.00 97.14
MW-2 6/24/2021 2 5.0-15.0 15 3.36 98.81 95.45
MW-3 6/24/2021 2 5.0-15.0 15 3.14 99.20 96.06
MW-4 6/24/2021 2 5.0-15.0 15 1.96 99.25 97.29
MW-5 9/7/2021 2 5.0-15.0 15 2.39 99.64 97.25
* Well construction details were determined based on field observations.
NM = Not measured.
TABLE B-7
WELL CONSTRUCTION INFORMATION
GOGAS NO. 14
NCDEQ INCIDENT NO.: 47115
GROUNDWATER MONITORING REPORT
415 NORTH CAROLINA HIGHWAY 117
BURGAW, PENDER COUNTY, NORTH CAROLINA
M APPENDICES
APPENDIX A
SAMPLING SHEETS
APPENDIX B
LABORATORY REPORT FOR GROUNDWATER SAMPLES
AND CHAIN-OF-CUSTODY RECORDS
#=CL#
December 01, 2022
LIMS USE: FR - JEFF BALLSIEPER
LIMS OBJECT ID: 92638057
92638057
Project:
Pace Project No.:
RE:
Jeff Ballsieper
Progress Environmental, Inc.
120 Fayette St.
Winston Salem, NC 27101
Go Gas No. 14 Burgaw
Dear Jeff Ballsieper:
Enclosed are the analytical results for sample(s) received by the laboratory on November 22, 2022. The results relate only
to the samples included in this report. Results reported herein conform to the applicable TNI/NELAC Standards and the
laboratory's Quality Manual, where applicable, unless otherwise noted in the body of the report.
The test results provided in this final report were generated by each of the following laboratories within the Pace Network:
• Pace Analytical Services - Charlotte
If you have any questions concerning this report, please feel free to contact me.
Sincerely,
Stephanie Knott
[e-mail]
Project Manager
704-977-0981
Enclosures
cc:Jay Lawson, Progressive Environmental Group
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Pace Analytical Services, LLC
1377 South Park Drive
Kernersville, NC 27284
[phone]
Page 1 of 22
#=CP#
CERTIFICATIONS
Pace Project No.:
Project:
92638057
Go Gas No. 14 Burgaw
Pace Analytical Services Charlotte
South Carolina Laboratory ID: 99006
9800 Kincey Ave. Ste 100, Huntersville, NC 28078
North Carolina Drinking Water Certification #: 37706
North Carolina Field Services Certification #: 5342
North Carolina Wastewater Certification #: 12
South Carolina Laboratory ID: 99006
South Carolina Certification #: 99006001
South Carolina Drinking Water Cert. #: 99006003
Florida/NELAP Certification #: E87627
Kentucky UST Certification #: 84
Louisiana DoH Drinking Water #: LA029
Virginia/VELAP Certification #: 460221
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Pace Analytical Services, LLC
1377 South Park Drive
Kernersville, NC 27284
[phone]
Page 2 of 22
#=SA#
SAMPLE ANALYTE COUNT
Pace Project No.:
Project:
92638057
Go Gas No. 14 Burgaw
Lab ID Sample ID Method
Analytes
Reported LaboratoryAnalysts
92638057001 MW-2 SM 6200B 69 PASI-CCL
92638057002 MW-3 SM 6200B 69 PASI-CCL
92638057003 MW-4 SM 6200B 69 PASI-CCL
92638057004 MW-5 SM 6200B 69 PASI-CCL
PASI-C = Pace Analytical Services - Charlotte
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Pace Analytical Services, LLC
1377 South Park Drive
Kernersville, NC 27284
[phone]
Page 3 of 22
#=HO#
SUMMARY OF DETECTION
Pace Project No.:
Project:
92638057
Go Gas No. 14 Burgaw
Parameters AnalyzedResult
Lab Sample ID
Report Limit QualifiersUnitsMethod
Client Sample ID
92638057001 MW-2
Benzene 0.53 ug/L 11/28/22 21:170.50SM 6200B
Ethylbenzene 1.6 ug/L 11/28/22 21:170.50SM 6200B
Methyl-tert-butyl ether 0.60 ug/L 11/28/22 21:170.50SM 6200B
Toluene 5.1 ug/L 11/28/22 21:170.50SM 6200B
1,2,4-Trimethylbenzene 3.5 ug/L 11/28/22 21:170.50SM 6200B
1,3,5-Trimethylbenzene 0.92 ug/L 11/28/22 21:170.50SM 6200B
m&p-Xylene 6.9 ug/L 11/28/22 21:171.0SM 6200B
o-Xylene 3.6 ug/L 11/28/22 21:170.50SM 6200B
92638057002 MW-3
Toluene 0.90 ug/L 11/28/22 21:350.50SM 6200B
1,2,4-Trimethylbenzene 0.89 ug/L 11/28/22 21:350.50SM 6200B
m&p-Xylene 1.4 ug/L 11/28/22 21:351.0SM 6200B
o-Xylene 0.74 ug/L 11/28/22 21:350.50SM 6200B
92638057004 MW-5
Benzene 0.55 ug/L 11/28/22 22:120.50SM 6200B
Methyl-tert-butyl ether 1.6 ug/L 11/28/22 22:120.50SM 6200B
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Pace Analytical Services, LLC
1377 South Park Drive
Kernersville, NC 27284
[phone]
Page 4 of 22
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92638057
Go Gas No. 14 Burgaw
Sample:MW-2 Lab ID:92638057001 Collected:11/21/22 13:15 Received:11/22/22 15:05 Matrix:Water
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: SM 6200B
Pace Analytical Services - Charlotte
6200B MSV
tert-Amyl Alcohol ND ug/L 11/28/22 21:17 75-85-41001
tert-Amylmethyl ether ND ug/L 11/28/22 21:17 994-05-810.0 1
Benzene 0.53 ug/L 11/28/22 21:17 71-43-20.50 1
Bromobenzene ND ug/L 11/28/22 21:17 108-86-10.50 1
Bromochloromethane ND ug/L 11/28/22 21:17 74-97-50.50 1
Bromodichloromethane ND ug/L 11/28/22 21:17 75-27-40.50 1
Bromoform ND ug/L 11/28/22 21:17 75-25-20.50 1
Bromomethane ND ug/L 11/28/22 21:17 74-83-95.0 1
tert-Butyl Alcohol ND ug/L 11/28/22 21:17 75-65-050.0 1
n-Butylbenzene ND ug/L 11/28/22 21:17 104-51-80.50 1
sec-Butylbenzene ND ug/L 11/28/22 21:17 135-98-80.50 1
tert-Butylbenzene ND ug/L 11/28/22 21:17 98-06-60.50 1
tert-Butyl Formate ND ug/L 11/28/22 21:17 762-75-450.0 1
Carbon tetrachloride ND ug/L 11/28/22 21:17 56-23-50.50 1
Chlorobenzene ND ug/L 11/28/22 21:17 108-90-70.50 1
Chloroethane ND ug/L 11/28/22 21:17 75-00-31.0 1
Chloroform ND ug/L 11/28/22 21:17 67-66-30.50 1
Chloromethane ND ug/L 11/28/22 21:17 74-87-31.0 1
2-Chlorotoluene ND ug/L 11/28/22 21:17 95-49-80.50 1
4-Chlorotoluene ND ug/L 11/28/22 21:17 106-43-40.50 1
1,2-Dibromo-3-chloropropane ND ug/L 11/28/22 21:17 96-12-81.0 1
Dibromochloromethane ND ug/L 11/28/22 21:17 124-48-10.50 1
1,2-Dibromoethane (EDB)ND ug/L 11/28/22 21:17 106-93-40.50 1
Dibromomethane ND ug/L 11/28/22 21:17 74-95-30.50 1
1,2-Dichlorobenzene ND ug/L 11/28/22 21:17 95-50-10.50 1
1,3-Dichlorobenzene ND ug/L 11/28/22 21:17 541-73-10.50 1
1,4-Dichlorobenzene ND ug/L 11/28/22 21:17 106-46-70.50 1
Dichlorodifluoromethane ND ug/L 11/28/22 21:17 75-71-80.50 1
1,1-Dichloroethane ND ug/L 11/28/22 21:17 75-34-30.50 1
1,2-Dichloroethane ND ug/L 11/28/22 21:17 107-06-20.50 1
1,1-Dichloroethene ND ug/L 11/28/22 21:17 75-35-40.50 1
cis-1,2-Dichloroethene ND ug/L 11/28/22 21:17 156-59-20.50 1
trans-1,2-Dichloroethene ND ug/L 11/28/22 21:17 156-60-50.50 1
1,2-Dichloropropane ND ug/L 11/28/22 21:17 78-87-50.50 1
1,3-Dichloropropane ND ug/L 11/28/22 21:17 142-28-90.50 1
2,2-Dichloropropane ND ug/L 11/28/22 21:17 594-20-70.50 1
1,1-Dichloropropene ND ug/L 11/28/22 21:17 563-58-60.50 1
cis-1,3-Dichloropropene ND ug/L 11/28/22 21:17 10061-01-50.50 1
trans-1,3-Dichloropropene ND ug/L 11/28/22 21:17 10061-02-60.50 1
Diisopropyl ether ND ug/L 11/28/22 21:17 108-20-30.50 1
Ethanol ND ug/L 11/28/22 21:17 64-17-52001
Ethylbenzene 1.6 ug/L 11/28/22 21:17 100-41-40.50 1
Ethyl-tert-butyl ether ND ug/L 11/28/22 21:17 637-92-310.0 1
Hexachloro-1,3-butadiene ND ug/L 11/28/22 21:17 87-68-32.0 1
Isopropylbenzene (Cumene)ND ug/L 11/28/22 21:17 98-82-80.50 1
Methylene Chloride ND ug/L 11/28/22 21:17 75-09-22.0 1
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 12/01/2022 10:02 AM
Pace Analytical Services, LLC
1377 South Park Drive
Kernersville, NC 27284
[phone]
Page 5 of 22
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92638057
Go Gas No. 14 Burgaw
Sample:MW-2 Lab ID:92638057001 Collected:11/21/22 13:15 Received:11/22/22 15:05 Matrix:Water
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: SM 6200B
Pace Analytical Services - Charlotte
6200B MSV
Methyl-tert-butyl ether 0.60 ug/L 11/28/22 21:17 1634-04-40.50 1
Naphthalene ND ug/L 11/28/22 21:17 91-20-32.0 1
n-Propylbenzene ND ug/L 11/28/22 21:17 103-65-10.50 1
Styrene ND ug/L 11/28/22 21:17 100-42-50.50 1
1,1,1,2-Tetrachloroethane ND ug/L 11/28/22 21:17 630-20-60.50 1
1,1,2,2-Tetrachloroethane ND ug/L 11/28/22 21:17 79-34-50.50 1
Tetrachloroethene ND ug/L 11/28/22 21:17 127-18-40.50 1
Toluene 5.1 ug/L 11/28/22 21:17 108-88-30.50 1
1,2,3-Trichlorobenzene ND ug/L 11/28/22 21:17 87-61-62.0 1
1,2,4-Trichlorobenzene ND ug/L 11/28/22 21:17 120-82-12.0 1
1,1,1-Trichloroethane ND ug/L 11/28/22 21:17 71-55-60.50 1
1,1,2-Trichloroethane ND ug/L 11/28/22 21:17 79-00-50.50 1
Trichloroethene ND ug/L 11/28/22 21:17 79-01-60.50 1
Trichlorofluoromethane ND ug/L 11/28/22 21:17 75-69-41.0 1
1,2,3-Trichloropropane ND ug/L 11/28/22 21:17 96-18-40.50 1
1,2,4-Trimethylbenzene 3.5 ug/L 11/28/22 21:17 95-63-60.50 1
1,3,5-Trimethylbenzene 0.92 ug/L 11/28/22 21:17 108-67-80.50 1
Vinyl chloride ND ug/L 11/28/22 21:17 75-01-41.0 1
m&p-Xylene 6.9 ug/L 11/28/22 21:17 179601-23-11.0 1
o-Xylene 3.6 ug/L 11/28/22 21:17 95-47-60.50 1
Surrogates
1,2-Dichloroethane-d4 (S)92 %11/28/22 21:17 17060-07-070-130 1
4-Bromofluorobenzene (S)97 %11/28/22 21:17 460-00-470-130 1
Toluene-d8 (S)99 %11/28/22 21:17 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: 12/01/2022 10:02 AM
Pace Analytical Services, LLC
1377 South Park Drive
Kernersville, NC 27284
[phone]
Page 6 of 22
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92638057
Go Gas No. 14 Burgaw
Sample:MW-3 Lab ID:92638057002 Collected:11/21/22 13:25 Received:11/22/22 15:05 Matrix:Water
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: SM 6200B
Pace Analytical Services - Charlotte
6200B MSV
tert-Amyl Alcohol ND ug/L 11/28/22 21:35 75-85-41001
tert-Amylmethyl ether ND ug/L 11/28/22 21:35 994-05-810.0 1
Benzene ND ug/L 11/28/22 21:35 71-43-20.50 1
Bromobenzene ND ug/L 11/28/22 21:35 108-86-10.50 1
Bromochloromethane ND ug/L 11/28/22 21:35 74-97-50.50 1
Bromodichloromethane ND ug/L 11/28/22 21:35 75-27-40.50 1
Bromoform ND ug/L 11/28/22 21:35 75-25-20.50 1
Bromomethane ND ug/L 11/28/22 21:35 74-83-95.0 1
tert-Butyl Alcohol ND ug/L 11/28/22 21:35 75-65-050.0 1
n-Butylbenzene ND ug/L 11/28/22 21:35 104-51-80.50 1
sec-Butylbenzene ND ug/L 11/28/22 21:35 135-98-80.50 1
tert-Butylbenzene ND ug/L 11/28/22 21:35 98-06-60.50 1
tert-Butyl Formate ND ug/L 11/28/22 21:35 762-75-450.0 1
Carbon tetrachloride ND ug/L 11/28/22 21:35 56-23-50.50 1
Chlorobenzene ND ug/L 11/28/22 21:35 108-90-70.50 1
Chloroethane ND ug/L 11/28/22 21:35 75-00-31.0 1
Chloroform ND ug/L 11/28/22 21:35 67-66-30.50 1
Chloromethane ND ug/L 11/28/22 21:35 74-87-31.0 1
2-Chlorotoluene ND ug/L 11/28/22 21:35 95-49-80.50 1
4-Chlorotoluene ND ug/L 11/28/22 21:35 106-43-40.50 1
1,2-Dibromo-3-chloropropane ND ug/L 11/28/22 21:35 96-12-81.0 1
Dibromochloromethane ND ug/L 11/28/22 21:35 124-48-10.50 1
1,2-Dibromoethane (EDB)ND ug/L 11/28/22 21:35 106-93-40.50 1
Dibromomethane ND ug/L 11/28/22 21:35 74-95-30.50 1
1,2-Dichlorobenzene ND ug/L 11/28/22 21:35 95-50-10.50 1
1,3-Dichlorobenzene ND ug/L 11/28/22 21:35 541-73-10.50 1
1,4-Dichlorobenzene ND ug/L 11/28/22 21:35 106-46-70.50 1
Dichlorodifluoromethane ND ug/L 11/28/22 21:35 75-71-80.50 1
1,1-Dichloroethane ND ug/L 11/28/22 21:35 75-34-30.50 1
1,2-Dichloroethane ND ug/L 11/28/22 21:35 107-06-20.50 1
1,1-Dichloroethene ND ug/L 11/28/22 21:35 75-35-40.50 1
cis-1,2-Dichloroethene ND ug/L 11/28/22 21:35 156-59-20.50 1
trans-1,2-Dichloroethene ND ug/L 11/28/22 21:35 156-60-50.50 1
1,2-Dichloropropane ND ug/L 11/28/22 21:35 78-87-50.50 1
1,3-Dichloropropane ND ug/L 11/28/22 21:35 142-28-90.50 1
2,2-Dichloropropane ND ug/L 11/28/22 21:35 594-20-70.50 1
1,1-Dichloropropene ND ug/L 11/28/22 21:35 563-58-60.50 1
cis-1,3-Dichloropropene ND ug/L 11/28/22 21:35 10061-01-50.50 1
trans-1,3-Dichloropropene ND ug/L 11/28/22 21:35 10061-02-60.50 1
Diisopropyl ether ND ug/L 11/28/22 21:35 108-20-30.50 1
Ethanol ND ug/L 11/28/22 21:35 64-17-52001
Ethylbenzene ND ug/L 11/28/22 21:35 100-41-40.50 1
Ethyl-tert-butyl ether ND ug/L 11/28/22 21:35 637-92-310.0 1
Hexachloro-1,3-butadiene ND ug/L 11/28/22 21:35 87-68-32.0 1
Isopropylbenzene (Cumene)ND ug/L 11/28/22 21:35 98-82-80.50 1
Methylene Chloride ND ug/L 11/28/22 21:35 75-09-22.0 1
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 12/01/2022 10:02 AM
Pace Analytical Services, LLC
1377 South Park Drive
Kernersville, NC 27284
[phone]
Page 7 of 22
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92638057
Go Gas No. 14 Burgaw
Sample:MW-3 Lab ID:92638057002 Collected:11/21/22 13:25 Received:11/22/22 15:05 Matrix:Water
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: SM 6200B
Pace Analytical Services - Charlotte
6200B MSV
Methyl-tert-butyl ether ND ug/L 11/28/22 21:35 1634-04-40.50 1
Naphthalene ND ug/L 11/28/22 21:35 91-20-32.0 1
n-Propylbenzene ND ug/L 11/28/22 21:35 103-65-10.50 1
Styrene ND ug/L 11/28/22 21:35 100-42-50.50 1
1,1,1,2-Tetrachloroethane ND ug/L 11/28/22 21:35 630-20-60.50 1
1,1,2,2-Tetrachloroethane ND ug/L 11/28/22 21:35 79-34-50.50 1
Tetrachloroethene ND ug/L 11/28/22 21:35 127-18-40.50 1
Toluene 0.90 ug/L 11/28/22 21:35 108-88-30.50 1
1,2,3-Trichlorobenzene ND ug/L 11/28/22 21:35 87-61-62.0 1
1,2,4-Trichlorobenzene ND ug/L 11/28/22 21:35 120-82-12.0 1
1,1,1-Trichloroethane ND ug/L 11/28/22 21:35 71-55-60.50 1
1,1,2-Trichloroethane ND ug/L 11/28/22 21:35 79-00-50.50 1
Trichloroethene ND ug/L 11/28/22 21:35 79-01-60.50 1
Trichlorofluoromethane ND ug/L 11/28/22 21:35 75-69-41.0 1
1,2,3-Trichloropropane ND ug/L 11/28/22 21:35 96-18-40.50 1
1,2,4-Trimethylbenzene 0.89 ug/L 11/28/22 21:35 95-63-60.50 1
1,3,5-Trimethylbenzene ND ug/L 11/28/22 21:35 108-67-80.50 1
Vinyl chloride ND ug/L 11/28/22 21:35 75-01-41.0 1
m&p-Xylene 1.4 ug/L 11/28/22 21:35 179601-23-11.0 1
o-Xylene 0.74 ug/L 11/28/22 21:35 95-47-60.50 1
Surrogates
1,2-Dichloroethane-d4 (S)92 %11/28/22 21:35 17060-07-070-130 1
4-Bromofluorobenzene (S)97 %11/28/22 21:35 460-00-470-130 1
Toluene-d8 (S)99 %11/28/22 21:35 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: 12/01/2022 10:02 AM
Pace Analytical Services, LLC
1377 South Park Drive
Kernersville, NC 27284
[phone]
Page 8 of 22
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92638057
Go Gas No. 14 Burgaw
Sample:MW-4 Lab ID:92638057003 Collected:11/21/22 13:40 Received:11/22/22 15:05 Matrix:Water
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: SM 6200B
Pace Analytical Services - Charlotte
6200B MSV
tert-Amyl Alcohol ND ug/L 11/28/22 21:53 75-85-41001
tert-Amylmethyl ether ND ug/L 11/28/22 21:53 994-05-810.0 1
Benzene ND ug/L 11/28/22 21:53 71-43-20.50 1
Bromobenzene ND ug/L 11/28/22 21:53 108-86-10.50 1
Bromochloromethane ND ug/L 11/28/22 21:53 74-97-50.50 1
Bromodichloromethane ND ug/L 11/28/22 21:53 75-27-40.50 1
Bromoform ND ug/L 11/28/22 21:53 75-25-20.50 1
Bromomethane ND ug/L 11/28/22 21:53 74-83-95.0 1
tert-Butyl Alcohol ND ug/L 11/28/22 21:53 75-65-050.0 1
n-Butylbenzene ND ug/L 11/28/22 21:53 104-51-80.50 1
sec-Butylbenzene ND ug/L 11/28/22 21:53 135-98-80.50 1
tert-Butylbenzene ND ug/L 11/28/22 21:53 98-06-60.50 1
tert-Butyl Formate ND ug/L 11/28/22 21:53 762-75-450.0 1
Carbon tetrachloride ND ug/L 11/28/22 21:53 56-23-50.50 1
Chlorobenzene ND ug/L 11/28/22 21:53 108-90-70.50 1
Chloroethane ND ug/L 11/28/22 21:53 75-00-31.0 1
Chloroform ND ug/L 11/28/22 21:53 67-66-30.50 1
Chloromethane ND ug/L 11/28/22 21:53 74-87-31.0 1
2-Chlorotoluene ND ug/L 11/28/22 21:53 95-49-80.50 1
4-Chlorotoluene ND ug/L 11/28/22 21:53 106-43-40.50 1
1,2-Dibromo-3-chloropropane ND ug/L 11/28/22 21:53 96-12-81.0 1
Dibromochloromethane ND ug/L 11/28/22 21:53 124-48-10.50 1
1,2-Dibromoethane (EDB)ND ug/L 11/28/22 21:53 106-93-40.50 1
Dibromomethane ND ug/L 11/28/22 21:53 74-95-30.50 1
1,2-Dichlorobenzene ND ug/L 11/28/22 21:53 95-50-10.50 1
1,3-Dichlorobenzene ND ug/L 11/28/22 21:53 541-73-10.50 1
1,4-Dichlorobenzene ND ug/L 11/28/22 21:53 106-46-70.50 1
Dichlorodifluoromethane ND ug/L 11/28/22 21:53 75-71-80.50 1
1,1-Dichloroethane ND ug/L 11/28/22 21:53 75-34-30.50 1
1,2-Dichloroethane ND ug/L 11/28/22 21:53 107-06-20.50 1
1,1-Dichloroethene ND ug/L 11/28/22 21:53 75-35-40.50 1
cis-1,2-Dichloroethene ND ug/L 11/28/22 21:53 156-59-20.50 1
trans-1,2-Dichloroethene ND ug/L 11/28/22 21:53 156-60-50.50 1
1,2-Dichloropropane ND ug/L 11/28/22 21:53 78-87-50.50 1
1,3-Dichloropropane ND ug/L 11/28/22 21:53 142-28-90.50 1
2,2-Dichloropropane ND ug/L 11/28/22 21:53 594-20-70.50 1
1,1-Dichloropropene ND ug/L 11/28/22 21:53 563-58-60.50 1
cis-1,3-Dichloropropene ND ug/L 11/28/22 21:53 10061-01-50.50 1
trans-1,3-Dichloropropene ND ug/L 11/28/22 21:53 10061-02-60.50 1
Diisopropyl ether ND ug/L 11/28/22 21:53 108-20-30.50 1
Ethanol ND ug/L 11/28/22 21:53 64-17-52001
Ethylbenzene ND ug/L 11/28/22 21:53 100-41-40.50 1
Ethyl-tert-butyl ether ND ug/L 11/28/22 21:53 637-92-310.0 1
Hexachloro-1,3-butadiene ND ug/L 11/28/22 21:53 87-68-32.0 1
Isopropylbenzene (Cumene)ND ug/L 11/28/22 21:53 98-82-80.50 1
Methylene Chloride ND ug/L 11/28/22 21:53 75-09-22.0 1
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 12/01/2022 10:02 AM
Pace Analytical Services, LLC
1377 South Park Drive
Kernersville, NC 27284
[phone]
Page 9 of 22
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92638057
Go Gas No. 14 Burgaw
Sample:MW-4 Lab ID:92638057003 Collected:11/21/22 13:40 Received:11/22/22 15:05 Matrix:Water
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: SM 6200B
Pace Analytical Services - Charlotte
6200B MSV
Methyl-tert-butyl ether ND ug/L 11/28/22 21:53 1634-04-40.50 1
Naphthalene ND ug/L 11/28/22 21:53 91-20-32.0 1
n-Propylbenzene ND ug/L 11/28/22 21:53 103-65-10.50 1
Styrene ND ug/L 11/28/22 21:53 100-42-50.50 1
1,1,1,2-Tetrachloroethane ND ug/L 11/28/22 21:53 630-20-60.50 1
1,1,2,2-Tetrachloroethane ND ug/L 11/28/22 21:53 79-34-50.50 1
Tetrachloroethene ND ug/L 11/28/22 21:53 127-18-40.50 1
Toluene ND ug/L 11/28/22 21:53 108-88-30.50 1
1,2,3-Trichlorobenzene ND ug/L 11/28/22 21:53 87-61-62.0 1
1,2,4-Trichlorobenzene ND ug/L 11/28/22 21:53 120-82-12.0 1
1,1,1-Trichloroethane ND ug/L 11/28/22 21:53 71-55-60.50 1
1,1,2-Trichloroethane ND ug/L 11/28/22 21:53 79-00-50.50 1
Trichloroethene ND ug/L 11/28/22 21:53 79-01-60.50 1
Trichlorofluoromethane ND ug/L 11/28/22 21:53 75-69-41.0 1
1,2,3-Trichloropropane ND ug/L 11/28/22 21:53 96-18-40.50 1
1,2,4-Trimethylbenzene ND ug/L 11/28/22 21:53 95-63-60.50 1
1,3,5-Trimethylbenzene ND ug/L 11/28/22 21:53 108-67-80.50 1
Vinyl chloride ND ug/L 11/28/22 21:53 75-01-41.0 1
m&p-Xylene ND ug/L 11/28/22 21:53 179601-23-11.0 1
o-Xylene ND ug/L 11/28/22 21:53 95-47-60.50 1
Surrogates
1,2-Dichloroethane-d4 (S)93 %11/28/22 21:53 17060-07-070-130 1
4-Bromofluorobenzene (S)96 %11/28/22 21:53 460-00-470-130 1
Toluene-d8 (S)99 %11/28/22 21:53 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: 12/01/2022 10:02 AM
Pace Analytical Services, LLC
1377 South Park Drive
Kernersville, NC 27284
[phone]
Page 10 of 22
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92638057
Go Gas No. 14 Burgaw
Sample:MW-5 Lab ID:92638057004 Collected:11/21/22 13:55 Received:11/22/22 15:05 Matrix:Water
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: SM 6200B
Pace Analytical Services - Charlotte
6200B MSV
tert-Amyl Alcohol ND ug/L 11/28/22 22:12 75-85-41001
tert-Amylmethyl ether ND ug/L 11/28/22 22:12 994-05-810.0 1
Benzene 0.55 ug/L 11/28/22 22:12 71-43-20.50 1
Bromobenzene ND ug/L 11/28/22 22:12 108-86-10.50 1
Bromochloromethane ND ug/L 11/28/22 22:12 74-97-50.50 1
Bromodichloromethane ND ug/L 11/28/22 22:12 75-27-40.50 1
Bromoform ND ug/L 11/28/22 22:12 75-25-20.50 1
Bromomethane ND ug/L 11/28/22 22:12 74-83-95.0 1
tert-Butyl Alcohol ND ug/L 11/28/22 22:12 75-65-050.0 1
n-Butylbenzene ND ug/L 11/28/22 22:12 104-51-80.50 1
sec-Butylbenzene ND ug/L 11/28/22 22:12 135-98-80.50 1
tert-Butylbenzene ND ug/L 11/28/22 22:12 98-06-60.50 1
tert-Butyl Formate ND ug/L 11/28/22 22:12 762-75-450.0 1
Carbon tetrachloride ND ug/L 11/28/22 22:12 56-23-50.50 1
Chlorobenzene ND ug/L 11/28/22 22:12 108-90-70.50 1
Chloroethane ND ug/L 11/28/22 22:12 75-00-31.0 1
Chloroform ND ug/L 11/28/22 22:12 67-66-30.50 1
Chloromethane ND ug/L 11/28/22 22:12 74-87-31.0 1
2-Chlorotoluene ND ug/L 11/28/22 22:12 95-49-80.50 1
4-Chlorotoluene ND ug/L 11/28/22 22:12 106-43-40.50 1
1,2-Dibromo-3-chloropropane ND ug/L 11/28/22 22:12 96-12-81.0 1
Dibromochloromethane ND ug/L 11/28/22 22:12 124-48-10.50 1
1,2-Dibromoethane (EDB)ND ug/L 11/28/22 22:12 106-93-40.50 1
Dibromomethane ND ug/L 11/28/22 22:12 74-95-30.50 1
1,2-Dichlorobenzene ND ug/L 11/28/22 22:12 95-50-10.50 1
1,3-Dichlorobenzene ND ug/L 11/28/22 22:12 541-73-10.50 1
1,4-Dichlorobenzene ND ug/L 11/28/22 22:12 106-46-70.50 1
Dichlorodifluoromethane ND ug/L 11/28/22 22:12 75-71-80.50 1
1,1-Dichloroethane ND ug/L 11/28/22 22:12 75-34-30.50 1
1,2-Dichloroethane ND ug/L 11/28/22 22:12 107-06-20.50 1
1,1-Dichloroethene ND ug/L 11/28/22 22:12 75-35-40.50 1
cis-1,2-Dichloroethene ND ug/L 11/28/22 22:12 156-59-20.50 1
trans-1,2-Dichloroethene ND ug/L 11/28/22 22:12 156-60-50.50 1
1,2-Dichloropropane ND ug/L 11/28/22 22:12 78-87-50.50 1
1,3-Dichloropropane ND ug/L 11/28/22 22:12 142-28-90.50 1
2,2-Dichloropropane ND ug/L 11/28/22 22:12 594-20-70.50 1
1,1-Dichloropropene ND ug/L 11/28/22 22:12 563-58-60.50 1
cis-1,3-Dichloropropene ND ug/L 11/28/22 22:12 10061-01-50.50 1
trans-1,3-Dichloropropene ND ug/L 11/28/22 22:12 10061-02-60.50 1
Diisopropyl ether ND ug/L 11/28/22 22:12 108-20-30.50 1
Ethanol ND ug/L 11/28/22 22:12 64-17-52001
Ethylbenzene ND ug/L 11/28/22 22:12 100-41-40.50 1
Ethyl-tert-butyl ether ND ug/L 11/28/22 22:12 637-92-310.0 1
Hexachloro-1,3-butadiene ND ug/L 11/28/22 22:12 87-68-32.0 1
Isopropylbenzene (Cumene)ND ug/L 11/28/22 22:12 98-82-80.50 1
Methylene Chloride ND ug/L 11/28/22 22:12 75-09-22.0 1
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 12/01/2022 10:02 AM
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Page 11 of 22
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92638057
Go Gas No. 14 Burgaw
Sample:MW-5 Lab ID:92638057004 Collected:11/21/22 13:55 Received:11/22/22 15:05 Matrix:Water
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: SM 6200B
Pace Analytical Services - Charlotte
6200B MSV
Methyl-tert-butyl ether 1.6 ug/L 11/28/22 22:12 1634-04-40.50 1
Naphthalene ND ug/L 11/28/22 22:12 91-20-32.0 1
n-Propylbenzene ND ug/L 11/28/22 22:12 103-65-10.50 1
Styrene ND ug/L 11/28/22 22:12 100-42-50.50 1
1,1,1,2-Tetrachloroethane ND ug/L 11/28/22 22:12 630-20-60.50 1
1,1,2,2-Tetrachloroethane ND ug/L 11/28/22 22:12 79-34-50.50 1
Tetrachloroethene ND ug/L 11/28/22 22:12 127-18-40.50 1
Toluene ND ug/L 11/28/22 22:12 108-88-30.50 1
1,2,3-Trichlorobenzene ND ug/L 11/28/22 22:12 87-61-62.0 1
1,2,4-Trichlorobenzene ND ug/L 11/28/22 22:12 120-82-12.0 1
1,1,1-Trichloroethane ND ug/L 11/28/22 22:12 71-55-60.50 1
1,1,2-Trichloroethane ND ug/L 11/28/22 22:12 79-00-50.50 1
Trichloroethene ND ug/L 11/28/22 22:12 79-01-60.50 1
Trichlorofluoromethane ND ug/L 11/28/22 22:12 75-69-41.0 1
1,2,3-Trichloropropane ND ug/L 11/28/22 22:12 96-18-40.50 1
1,2,4-Trimethylbenzene ND ug/L 11/28/22 22:12 95-63-60.50 1
1,3,5-Trimethylbenzene ND ug/L 11/28/22 22:12 108-67-80.50 1
Vinyl chloride ND ug/L 11/28/22 22:12 75-01-41.0 1
m&p-Xylene ND ug/L 11/28/22 22:12 179601-23-11.0 1
o-Xylene ND ug/L 11/28/22 22:12 95-47-60.50 1
Surrogates
1,2-Dichloroethane-d4 (S)93 %11/28/22 22:12 17060-07-070-130 1
4-Bromofluorobenzene (S)96 %11/28/22 22:12 460-00-470-130 1
Toluene-d8 (S)98 %11/28/22 22:12 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: 12/01/2022 10:02 AM
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[phone]
Page 12 of 22
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92638057
Go Gas No. 14 Burgaw
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:
739372
SM 6200B
SM 6200B
6200B MSV
Laboratory:Pace Analytical Services - Charlotte
Associated Lab Samples:92638057001, 92638057002, 92638057003, 92638057004
Parameter Units
Blank
Result
Reporting
Limit Qualifiers
METHOD BLANK:3847386
Associated Lab Samples:92638057001, 92638057002, 92638057003, 92638057004
Matrix:Water
Analyzed
1,1,1,2-Tetrachloroethane ug/L ND 0.50 11/28/22 16:45
1,1,1-Trichloroethane ug/L ND 0.50 11/28/22 16:45
1,1,2,2-Tetrachloroethane ug/L ND 0.50 11/28/22 16:45
1,1,2-Trichloroethane ug/L ND 0.50 11/28/22 16:45
1,1-Dichloroethane ug/L ND 0.50 11/28/22 16:45
1,1-Dichloroethene ug/L ND 0.50 11/28/22 16:45
1,1-Dichloropropene ug/L ND 0.50 11/28/22 16:45
1,2,3-Trichlorobenzene ug/L ND 2.0 11/28/22 16:45
1,2,3-Trichloropropane ug/L ND 0.50 11/28/22 16:45
1,2,4-Trichlorobenzene ug/L ND 2.0 11/28/22 16:45
1,2,4-Trimethylbenzene ug/L ND 0.50 11/28/22 16:45
1,2-Dibromo-3-chloropropane ug/L ND 1.0 11/28/22 16:45
1,2-Dibromoethane (EDB)ug/L ND 0.50 11/28/22 16:45
1,2-Dichlorobenzene ug/L ND 0.50 11/28/22 16:45
1,2-Dichloroethane ug/L ND 0.50 11/28/22 16:45
1,2-Dichloropropane ug/L ND 0.50 11/28/22 16:45
1,3,5-Trimethylbenzene ug/L ND 0.50 11/28/22 16:45
1,3-Dichlorobenzene ug/L ND 0.50 11/28/22 16:45
1,3-Dichloropropane ug/L ND 0.50 11/28/22 16:45
1,4-Dichlorobenzene ug/L ND 0.50 11/28/22 16:45
2,2-Dichloropropane ug/L ND 0.50 11/28/22 16:45
2-Chlorotoluene ug/L ND 0.50 11/28/22 16:45
4-Chlorotoluene ug/L ND 0.50 11/28/22 16:45
Benzene ug/L ND 0.50 11/28/22 16:45
Bromobenzene ug/L ND 0.50 11/28/22 16:45
Bromochloromethane ug/L ND 0.50 11/28/22 16:45
Bromodichloromethane ug/L ND 0.50 11/28/22 16:45
Bromoform ug/L ND 0.50 11/28/22 16:45
Bromomethane ug/L ND 5.0 11/28/22 16:45
Carbon tetrachloride ug/L ND 0.50 11/28/22 16:45
Chlorobenzene ug/L ND 0.50 11/28/22 16:45
Chloroethane ug/L ND 1.0 11/28/22 16:45
Chloroform ug/L ND 0.50 11/28/22 16:45
Chloromethane ug/L ND 1.0 11/28/22 16:45
cis-1,2-Dichloroethene ug/L ND 0.50 11/28/22 16:45
cis-1,3-Dichloropropene ug/L ND 0.50 11/28/22 16:45
Dibromochloromethane ug/L ND 0.50 11/28/22 16:45
Dibromomethane ug/L ND 0.50 11/28/22 16:45
Dichlorodifluoromethane ug/L ND 0.50 11/28/22 16:45
Diisopropyl ether ug/L ND 0.50 11/28/22 16:45
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 12/01/2022 10:02 AM
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1377 South Park Drive
Kernersville, NC 27284
[phone]
Page 13 of 22
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92638057
Go Gas No. 14 Burgaw
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:3847386
Associated Lab Samples:92638057001, 92638057002, 92638057003, 92638057004
Matrix:Water
Analyzed
Ethanol ug/L ND 200 11/28/22 16:45
Ethyl-tert-butyl ether ug/L ND 10.0 11/28/22 16:45
Ethylbenzene ug/L ND 0.50 11/28/22 16:45
Hexachloro-1,3-butadiene ug/L ND 2.0 11/28/22 16:45
Isopropylbenzene (Cumene)ug/L ND 0.50 11/28/22 16:45
m&p-Xylene ug/L ND 1.0 11/28/22 16:45
Methyl-tert-butyl ether ug/L ND 0.50 11/28/22 16:45
Methylene Chloride ug/L ND 2.0 11/28/22 16:45
n-Butylbenzene ug/L ND 0.50 11/28/22 16:45
n-Propylbenzene ug/L ND 0.50 11/28/22 16:45
Naphthalene ug/L ND 2.0 11/28/22 16:45
o-Xylene ug/L ND 0.50 11/28/22 16:45
sec-Butylbenzene ug/L ND 0.50 11/28/22 16:45
Styrene ug/L ND 0.50 11/28/22 16:45
tert-Amyl Alcohol ug/L ND 100 11/28/22 16:45
tert-Amylmethyl ether ug/L ND 10.0 11/28/22 16:45
tert-Butyl Alcohol ug/L ND 50.0 11/28/22 16:45
tert-Butyl Formate ug/L ND 50.0 11/28/22 16:45
tert-Butylbenzene ug/L ND 0.50 11/28/22 16:45
Tetrachloroethene ug/L ND 0.50 11/28/22 16:45
Toluene ug/L ND 0.50 11/28/22 16:45
trans-1,2-Dichloroethene ug/L ND 0.50 11/28/22 16:45
trans-1,3-Dichloropropene ug/L ND 0.50 11/28/22 16:45
Trichloroethene ug/L ND 0.50 11/28/22 16:45
Trichlorofluoromethane ug/L ND 1.0 11/28/22 16:45
Vinyl chloride ug/L ND 1.0 11/28/22 16:45
1,2-Dichloroethane-d4 (S)%91 70-130 11/28/22 16:45
4-Bromofluorobenzene (S)%99 70-130 11/28/22 16:45
Toluene-d8 (S)%101 70-130 11/28/22 16:45
Parameter Units
LCS
Result
% Rec
Limits Qualifiers% RecConc.
3847387LABORATORY CONTROL SAMPLE:
LCSSpike
1,1,1,2-Tetrachloroethane ug/L 49.050 98 60-140
1,1,1-Trichloroethane ug/L 47.450 95 60-140
1,1,2,2-Tetrachloroethane ug/L 45.750 91 60-140
1,1,2-Trichloroethane ug/L 48.050 96 60-140
1,1-Dichloroethane ug/L 43.850 88 60-140
1,1-Dichloroethene ug/L 49.350 99 60-140
1,1-Dichloropropene ug/L 49.350 99 60-140
1,2,3-Trichlorobenzene ug/L 52.350 105 60-140
1,2,3-Trichloropropane ug/L 43.650 87 60-140
1,2,4-Trichlorobenzene ug/L 51.750 103 60-140
1,2,4-Trimethylbenzene ug/L 47.150 94 60-140
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.Date: 12/01/2022 10:02 AM
Pace Analytical Services, LLC
1377 South Park Drive
Kernersville, NC 27284
[phone]
Page 14 of 22
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92638057
Go Gas No. 14 Burgaw
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.
3847387LABORATORY CONTROL SAMPLE:
LCSSpike
1,2-Dibromo-3-chloropropane ug/L 48.550 97 60-140
1,2-Dibromoethane (EDB)ug/L 49.350 99 60-140
1,2-Dichlorobenzene ug/L 48.550 97 60-140
1,2-Dichloroethane ug/L 43.350 87 60-140
1,2-Dichloropropane ug/L 47.450 95 60-140
1,3,5-Trimethylbenzene ug/L 46.850 94 60-140
1,3-Dichlorobenzene ug/L 48.650 97 60-140
1,3-Dichloropropane ug/L 46.850 94 60-140
1,4-Dichlorobenzene ug/L 46.950 94 60-140
2,2-Dichloropropane ug/L 44.850 90 60-140
2-Chlorotoluene ug/L 45.550 91 60-140
4-Chlorotoluene ug/L 45.250 90 60-140
Benzene ug/L 45.650 91 60-140
Bromobenzene ug/L 49.450 99 60-140
Bromochloromethane ug/L 50.350 101 60-140
Bromodichloromethane ug/L 46.450 93 60-140
Bromoform ug/L 49.450 99 60-140
Bromomethane ug/L 46.450 93 60-140
Carbon tetrachloride ug/L 45.450 91 60-140
Chlorobenzene ug/L 47.850 96 60-140
Chloroethane ug/L 50.750 101 60-140
Chloroform ug/L 44.150 88 60-140
Chloromethane ug/L 51.650 103 60-140
cis-1,2-Dichloroethene ug/L 43.550 87 60-140
cis-1,3-Dichloropropene ug/L 46.950 94 60-140
Dibromochloromethane ug/L 48.850 98 60-140
Dibromomethane ug/L 53.750 107 60-140
Dichlorodifluoromethane ug/L 56.950 114 60-140
Diisopropyl ether ug/L 43.450 87 60-140
Ethanol ug/L 15102000 76 60-140
Ethyl-tert-butyl ether ug/L 87.7100 88 60-140
Ethylbenzene ug/L 45.950 92 60-140
Hexachloro-1,3-butadiene ug/L 51.650 103 60-140
Isopropylbenzene (Cumene)ug/L 46.350 93 60-140
m&p-Xylene ug/L 91.7100 92 60-140
Methyl-tert-butyl ether ug/L 47.850 96 60-140
Methylene Chloride ug/L 41.550 83 60-140
n-Butylbenzene ug/L 46.350 93 60-140
n-Propylbenzene ug/L 45.250 90 60-140
Naphthalene ug/L 53.550 107 60-140
o-Xylene ug/L 47.450 95 60-140
sec-Butylbenzene ug/L 45.350 91 60-140
Styrene ug/L 48.350 97 60-140
tert-Amyl Alcohol ug/L 8331000 83 60-140
tert-Amylmethyl ether ug/L 92.1100 92 60-140
tert-Butyl Alcohol ug/L 421500 84 60-140
tert-Butyl Formate ug/L 346400 86 60-140
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.Date: 12/01/2022 10:02 AM
Pace Analytical Services, LLC
1377 South Park Drive
Kernersville, NC 27284
[phone]
Page 15 of 22
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92638057
Go Gas No. 14 Burgaw
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.
3847387LABORATORY CONTROL SAMPLE:
LCSSpike
tert-Butylbenzene ug/L 40.150 80 60-140
Tetrachloroethene ug/L 50.750 101 60-140
Toluene ug/L 44.650 89 60-140
trans-1,2-Dichloroethene ug/L 46.350 93 60-140
trans-1,3-Dichloropropene ug/L 46.450 93 60-140
Trichloroethene ug/L 51.550 103 60-140
Trichlorofluoromethane ug/L 42.750 85 60-140
Vinyl chloride ug/L 50.850 102 60-140
1,2-Dichloroethane-d4 (S)%92 70-130
4-Bromofluorobenzene (S)%97 70-130
Toluene-d8 (S)%97 70-130
Parameter Units
MS
Result
% Rec
Limits Qual% RecConc.
3848920MATRIX SPIKE & MATRIX SPIKE DUPLICATE:
MSSpike
Result
92638143002
3848921
MSD
Result
MSD
% Rec RPD
MSDMS
Spike
Conc.
1,1,1,2-Tetrachloroethane ug/L 20 123 60-140126 220ND24.6 25.2
1,1,1-Trichloroethane ug/L 20 120 60-140122 120ND24.1 24.4
1,1,2,2-Tetrachloroethane ug/L 20 117 60-140119 220ND23.3 23.8
1,1,2-Trichloroethane ug/L 20 121 60-140125 320ND24.2 24.9
1,1-Dichloroethane ug/L 20 112 60-140115 220ND22.4 22.9
1,1-Dichloroethene ug/L 20 128 60-140131 220ND25.6 26.1
1,1-Dichloropropene ug/L 20 125 60-140128 220ND25.1 25.6
1,2,3-Trichlorobenzene ug/L 20 136 60-140134 220ND27.3 26.8
1,2,3-Trichloropropane ug/L 20 110 60-140112 120ND22.1 22.4
1,2,4-Trichlorobenzene ug/L 20 129 60-140126 320ND25.9 25.2
1,2,4-Trimethylbenzene ug/L 20 122 60-140120 220ND24.4 24.0
1,2-Dibromo-3-chloropropane ug/L 20 122 60-140122 020ND24.5 24.4
1,2-Dibromoethane (EDB)ug/L 20 126 60-140126 020ND25.2 25.2
1,2-Dichlorobenzene ug/L 20 125 60-140125 020ND25.0 25.0
1,2-Dichloroethane ug/L 20 111 60-140114 220ND22.2 22.7
1,2-Dichloropropane ug/L 20 122 60-140124 120ND24.4 24.7
1,3,5-Trimethylbenzene ug/L 20 120 60-140118 220ND24.1 23.7
1,3-Dichlorobenzene ug/L 20 126 60-140122 320ND25.2 24.5
1,3-Dichloropropane ug/L 20 118 60-140120 220ND23.6 24.0
1,4-Dichlorobenzene ug/L 20 121 60-140118 220ND24.2 23.7
2,2-Dichloropropane ug/L 20 114 60-140117 220ND22.9 23.3
2-Chlorotoluene ug/L 20 118 60-140116 120ND23.6 23.3
4-Chlorotoluene ug/L 20 117 60-140116 120ND23.3 23.1
Benzene ug/L 20 121 60-140121 020ND24.2 24.3
Bromobenzene ug/L 20 129 60-140128 120ND25.9 25.5
Bromochloromethane ug/L 20 129 60-140131 120ND25.8 26.2
Bromodichloromethane ug/L 20 116 60-140119 320ND23.2 23.8
Bromoform ug/L 20 119 60-140121 220ND23.7 24.3
Bromomethane ug/L 20 121 60-140123 220ND24.1 24.7
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.Date: 12/01/2022 10:02 AM
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Kernersville, NC 27284
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Page 16 of 22
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92638057
Go Gas No. 14 Burgaw
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.
3848920MATRIX SPIKE & MATRIX SPIKE DUPLICATE:
MSSpike
Result
92638143002
3848921
MSD
Result
MSD
% Rec RPD
MSDMS
Spike
Conc.
Carbon tetrachloride ug/L 20 117 60-140118 120ND23.3 23.6
Chlorobenzene ug/L 20 124 60-140126 220ND24.9 25.3
Chloroethane ug/L M12015160-140154 220ND30.2 30.7
Chloroform ug/L 20 109 60-140112 320ND21.8 22.4
Chloromethane ug/L 20 132 60-140135 220ND26.3 26.9
cis-1,2-Dichloroethene ug/L 20 110 60-140113 320ND22.0 22.6
cis-1,3-Dichloropropene ug/L 20 117 60-140119 120ND23.5 23.8
Dibromochloromethane ug/L 20 121 60-140122 120ND24.1 24.4
Dibromomethane ug/L 20 137 60-140139 120ND27.4 27.8
Dichlorodifluoromethane ug/L M12015060-140152 120ND30.0 30.4
Diisopropyl ether ug/L 20 109 60-140111 220ND21.7 22.2
Ethanol ug/L 800 100 60-140102 2800ND801820
Ethyl-tert-butyl ether ug/L 40 109 60-140111 240ND43.6 44.4
Ethylbenzene ug/L 20 119 60-140120 120ND23.8 24.1
Hexachloro-1,3-butadiene ug/L 20 131 60-140124 620ND26.1 24.7
Isopropylbenzene (Cumene)ug/L 20 120 60-140120 020ND24.0 24.0
m&p-Xylene ug/L 40 120 60-140122 240ND47.9 48.7
Methyl-tert-butyl ether ug/L 20 119 60-140121 120ND23.9 24.2
Methylene Chloride ug/L 20 93 60-14096 320ND18.7 19.2
n-Butylbenzene ug/L 20 116 60-140111 420ND23.1 22.2
n-Propylbenzene ug/L 20 117 60-140115 220ND23.4 22.9
Naphthalene ug/L 20 139 60-140137 120ND27.7 27.4
o-Xylene ug/L 20 123 60-140125 220ND24.6 25.1
sec-Butylbenzene ug/L 20 117 60-140115 220ND23.4 22.9
Styrene ug/L 20 124 60-140125 120ND24.7 25.0
tert-Amyl Alcohol ug/L 400 105 60-140106 1400ND422425
tert-Amylmethyl ether ug/L 40 118 60-140121 240ND47.4 48.4
tert-Butyl Alcohol ug/L M120014560-140151 4200ND290302
tert-Butyl Formate ug/L M11602260-14015160ND34.4J ND
tert-Butylbenzene ug/L 20 105 60-140103 120ND20.9 20.6
Tetrachloroethene ug/L 20 131 60-140131 020ND26.3 26.2
Toluene ug/L 20 119 60-140120 120ND23.8 24.0
trans-1,2-Dichloroethene ug/L 20 118 60-140121 220ND23.6 24.1
trans-1,3-Dichloropropene ug/L 20 116 60-140118 220ND23.2 23.6
Trichloroethene ug/L 20 134 60-140137 220ND26.8 27.4
Trichlorofluoromethane ug/L 20 117 60-140120 320ND23.4 24.1
Vinyl chloride ug/L 20 131 60-140135 320ND26.2 27.0
1,2-Dichloroethane-d4 (S)%87 70-13086
4-Bromofluorobenzene (S)%95 70-13097
Toluene-d8 (S)%96 70-13096
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.Date: 12/01/2022 10:02 AM
Pace Analytical Services, LLC
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Page 17 of 22
#=QL#
QUALIFIERS
Pace Project No.:
Project:
92638057
Go Gas No. 14 Burgaw
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.
Reported results are not rounded until the final step prior to reporting. Therefore, calculated parameters that are typically reported as
"Total" may vary slightly from the sum of the reported component parameters.
Pace Analytical is TNI accredited. Contact your Pace PM for the current list of accredited analytes.
TNI - The NELAC Institute.
ANALYTE QUALIFIERS
Matrix spike recovery exceeded QC limits. Batch accepted based on laboratory control sample (LCS) recovery.M1
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 12/01/2022 10:02 AM
Pace Analytical Services, LLC
1377 South Park Drive
Kernersville, NC 27284
[phone]
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#=CR#
QUALITY CONTROL DATA CROSS REFERENCE TABLE
Pace Project No.:
Project:
92638057
Go Gas No. 14 Burgaw
Lab ID Sample ID QC Batch Method QC Batch Analytical Method
Analytical
Batch
92638057001 739372MW-2 SM 6200B
92638057002 739372MW-3 SM 6200B
92638057003 739372MW-4 SM 6200B
92638057004 739372MW-5 SM 6200B
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 12/01/2022 10:02 AM
Pace Analytical Services, LLC
1377 South Park Drive
Kernersville, NC 27284
[phone]
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Groundwater Monitoring Report December 1, 2022
GoGas No. 14 Progress Project No. QUA403N.GW
415 US Highway 117
Burgaw, Pender County, North Carolina
19
N REFERENCES
North Carolina Department of Natural Resources and Community Development Geologic Map of
North Carolina published 1985.
Underground Storage Tank Section, NCDEQ Guidelines for Assessment and Corrective Action for
UST Releases dated January 19, 2021.
Burgaw, NC 7½-minute topographic maps, published by the United Stated Geologic Society, 2019
Site Check Report, prepared by Paragon Environmental Consultants, Inc. dated June 18, 2020.
Phase I Limited Site Assessment, prepared by Progress, dated December 11, 2020.
Letter Report, prepared by Progress, dated April 19, 2021.
Additional Risk Assessment Report, prepared by Progress, dated August 3, 2021.
Groundwater Monitoring Report, prepared by Progress, dated September 22, 2021.
Groundwater Monitoring Report, prepared by Progress, dated May 18, 2022.