HomeMy WebLinkAboutFA-3861_29769_CA_CSA_20231027
3502 Hayes Road • Monroe, North Carolina 28110
113 West Firetower Road, Suite G • Winterville, North Carolina 28590
Phone (704) 845-4010 • (888) 870-4133 • Fax (704) 845-4012
October 27, 2023
Mr. Mike Haseltine
NCDEQ-UST Section
Wilmington Regional Office
127 Cardinal Drive Extension
Wilmington, NC 28405
Re: Comprehensive Site Assessment Report
March - September 2023
Minute Man #3
501 North East Street
Roseboro, Sampson County
North Carolina
Facility ID Number: 0-00-0000009436
Incident Number: 29769
GRI Project Number: 3148
Dear Mr. Haseltine,
Please find enclosed the referenced report for the abovementioned site.
If you have any questions, please contact Laura Minor at 704-845-4010.
Sincerely,
Geological Resources, Inc.
Leslie Maxtone-Graham
Administrative Assistant
Enclosure
Cc: Ms. Jill Smith; Campbell Oil Company, Inc., file
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Comprehensive Site Assessment Report
March-September 2023
Minute Man #3
501 North East Street
Roseboro, Sampson County
North Carolina
Facility ID Number: 0-00-0000009436
Incident Number: 29769
GRI Project Number: 3148
Prepared for:
Ms. Jill Smith
Campbell Oil Company, Inc.
Post Office Box 637
Elizabethtown, North Carolina 28337
October 24, 2023
Laura Minor
Project Manager
Eric M. Eubanks, P.G.
Report Writer
___________________________________________________________________________________________
Prepared by: Geological Resources, Inc. Comprehensive Site Assessment Report
Prepared on: October 24, 2023 Minute Man #3
Project Manager: Laura Minor GRI Project No. 3148
i
EXECUTIVE SUMMARY
The Minute Man #3 site is an active convenience store and gasoline retail facility located at 501 North
East Street in Roseboro, Sampson County, North Carolina. The site is covered by concrete and asphalt.
The surrounding properties are commercial and residential. There are two 6,000-gallon gasoline USTs,
one 4,000-gallon gasoline UST, and one 2,000-gallon kerosene UST and associated pumps and product
piping are currently in use at the site with two associated gasoline dispenser islands. Reportedly, one
3,000-gallon diesel UST was removed in 1992.
On June 8, 2012, a monitoring well was installed down gradient of the site for an adjoining incident
(Incident No. 6601). Free product was measured in this monitoring well and therefore a site check was
completed at the subject site in June 2012. Site Check results confirmed a release at the site and an LSA
was required.
Based on the December 2012 receptor survey, three water supply wells were identified within a 1,500-
foot radius of the site. No potable water supply wells were identified within a 1,000-foot radius of the
site and no non-potable water supply wells were identified within a 250-foot radius of the site. No surface
water bodies were identified within a 500-foot radius of the site. Municipal water is available to the site
and surrounding properties.
An NRP for the site was filed on July 22, 2016. However, during well abandonment activities, free product
was observed in MW-1. Therefore, on July 5, 2017, five additional Type II monitoring wells (MW-2 through
MW-6) were installed at the site. Based on the results of ground water sampling and free product removal
activities, a CSA was required.
On March 8 and 9, 2023, five Type II monitoring wells (MW-7 through MW-11) and one Type III telescoping
well (TW-1) were installed as part of CSA activities. The contaminant concentrations of benzene, toluene,
ethylbenzene, xylenes, naphthalene, n-propylbenzene, 1,2,4-trimethylbenzene, C5-C8 aliphatics, and/or
C9-C22 aromatics reported in the ground water samples collected from MW-3, MW-6, MW-9, and MW-
11 exceeded the MACs. All contaminant concentrations were below the GCLs. Free product thicknesses
of 0.74 feet, 0.31 feet, 1.49 feet, and 0.36 feet were measured in monitoring wells MW-1, MW-2, MW-4,
and MW-5, respectively.
Due to the lack of delineation of contaminant concentrations, two (2) additional Type II monitoring wells
(MW-12 and MW-13) were installed along the NCDOT right-of-way located north and west of MW-5,
respectively, on September 12, 2023. The newly installed wells were sampled on September 21, 2023,
while the existing wells (MW-1 through MW-11 and TW-1) were only gauged. Concentrations of benzene,
xylenes, naphthalene, 1,2,4-trimethylbenzene, C5-C8 aliphtatics, C9-C18 aliphatics and/or C9-C22
aromatics that exceeded the MACs were reported in MW-12 and/or MW-13. Free product thicknesses of
1.35 feet, 0.29 feet, 0.37 feet, 2.87 feet, 0.33 feet and 0.03 feet in MW-1 through MW-6, respectively.
___________________________________________________________________________________________
Prepared by: Geological Resources, Inc. Comprehensive Site Assessment Report
Prepared on: October 24, 2023 Minute Man #3
Project Manager: Laura Minor GRI Project No. 3148
ii
During the March 2023 monitoring well installation activities, two soil samples (SB-1 (18’)) and SB-2 (20’))
were collected and submitted for laboratory analysis. The concentrations of benzene, toluene,
ethylbenzene, xylenes, naphthalene, n-propylbenzene, n-butylbenzene, sec-butylbenzene,
isopropylbenzene, 4-isopropyltoluene, methylene chloride, styrene, 1,2,4-trimethylbenzene, 1,3,5-
trimethylbenzene, 1-methylnaphthalene, 2-methylnaphthalene, C9-C18 aliphatics, C11-C22 aromatics,
C5-C8 aliphatics, C9-C12 aliphatics, and/or C9-C10 aromatics reported in soil samples SB-1 (18’) and SB-2
(20’) exceeded the MCCs. The concentrations of ethylbenzene, naphthalene, 1,2,4-trimethylbenzene, C5-
C8 aliphatics, and/or C9-C10 aromatics reported in soil samples SB-1 (18’) and SB-2 (20’) exceeded the
Residential SCLs. The concentration of naphthalene reported in soil sample SB-1 (18’) exceeded the
Industrial SCL. Due to the lack of delineation of contaminant concentrations, two (2) additional Type II
monitoring wells (MW-12 and MW-13) were installed along the NCDOT right-of-way located north and
west of MW-5, respectively.
Based on observations made during assessment activities, surficial soils observed at the site consist of
various clays, silts, and sands to 45 feet BGS. Ground water flowed radially away from MW-2. The vertical
hydraulic gradient was downward. Rising head slug tests were conducted on MW-7, MW-8, and TW-1.
The average hydraulic conductivity and seepage velocity for the Type II monitoring wells were 1.343 x 100
feet per minute (1,933 feet per day) and 6.44 x 100 feet per day (2,350 feet per year). The hydraulic
conductivity and seepage velocity in the Type III monitoring well were 2.586 x 10-3 feet per minute (3.724
feet per day) and 2.48 x 10-2 feet per day (9.06 feet per year), respectively.
The site risk classification has been deemed as intermediate risk based on the presence of free product
and/or GCL exceedances. Therefore, free product must be removed from the site and the ground water
contamination must be remediated to concentrations less than the GCLs.
GRI recommends continuing free product recovery at the site in order to lower the risk ranking. A
comprehensive ground water sampling event that includes monitoring wells RBP-42 and RBP-17 (which
are monitoring wells MW-42 and MW-17 associated with Roseboro BP (Incident No. 6601)) should be
conducted at the site. Prior to further free product removal and/or assessment and sampling activities,
GRI also recommends that a site check be completed by the current tank owner to determine if a new
release has occurred.
___________________________________________________________________________________________
Prepared by: Geological Resources, Inc. Comprehensive Site Assessment Report
Prepared on: October 24, 2023 Minute Man #3
Project Manager: Laura Minor GRI Project No. 3148
iii
SITE INFORMATION
1. Site Identification
Minute Man #3 (Facility ID 0-00-0000009436)
Incident Number 29769 – Intermediate Risk (I180D)
Location of Source Area: 501 North East Street
Roseboro, NC 28382
Sampson County
34.9557861°N, 78.5102027°W (Topographical Map)
2. Information about Contacts Associated with the Leaking UST System
Former Owner/Operator
Campbell Oil & Gas Company
Post Office Box 637
Elizabethtown, NC 28337
jillj@campbelloil.net
910-862-8423
Current UST/AST Operator
Alhobishi Convenience Stores
411 North Wilkinson Road
St. Pauls, NC 28384
Email Unknown
910-521-9030
Property Occupant
Alhobishi Convenience Stores
411 North Wilkinson Road
St. Pauls, NC 28384
Email Unknown
910-521-9030
Property Owner
Alhobishi Convenience Stores
411 North Wilkinson Road
St. Pauls, NC 28384
Email Unknown
910-521-9030
Consultant/Contractor
Geological Resources, Inc.
3502 Hayes Road
Monroe, NC 28110
ljm@geologicalresourcesinc.com
704-845-4010
Analytical Laboratory
Waypoint Analytical, LLC
449 Springbrook Road
Charlotte, NC 28217
State Cert. Nos. 37735 and 402
(704) 529-6364
3. Information about Release
On June 8, 2012, a monitoring well was installed down gradient of the site for an adjoining incident
(Incident No. 6601). Free product was observed in the well, which indicated a possible UST release
at this site.
Two 6,000-gallon gasoline USTs, one 4,000-gallon gasoline UST, and one 2,000-gallon kerosene
UST and associated pumps and product piping are active at the site. One 3,000-gallon diesel UST
was removed in 1992.
Certification:
I, Samuel L. McKay, III, a Licensed Geologist for Geological Resources, Inc., do certify that the information
contained in this report is correct and accurate to the best of my knowledge.
Geological Resources, Inc. is licensed to practice geology and engineering in North Carolina. The
certification numbers of the company are C-127 and C-2727, respectively.
___________________________________________________________________________________________
Prepared by: Geological Resources, Inc. Comprehensive Site Assessment Report
Prepared on: October 24, 2023 Minute Man #3
Project Manager: Laura Minor GRI Project No. 3148
iv
ACRONYMS
ACM: Asbestos Containing Materials
AFVR: Aggressive Fluid-Vapor Recovery
ARR: Acknowledgement of Report Receipt
AS: Air Sparging
AST: Aboveground Storage Tank
ASTM: American Society for Testing and
Materials
BGS: Below Ground Surface
CAP: Corrective Action Plan
CFR: Code of Federal Regulations
CSA: Comprehensive Site Assessment
DPE: Dual Phase Extraction
DRO: Total Petroleum Hydrocarbons Diesel
Range Organics
DWM: Division of Waste Management
DWR: Department of Water Resources
EPA: Environmental Protection Agency
EPH: Extractible Petroleum Hydrocarbons
ESA: Environmental Site Assessment
GCL: Gross Contamination Level
GRI: Geological Resources, Inc.
GRO: Total Petroleum Hydrocarbons
Gasoline Range Organics
LSA: Limited Site Assessment
MAC: Maximum Allowable Concentration as
specified in T15A NCAC 2L.0202
MADEP: Massachusetts Department of
Environmental Protection
MCC: Maximum Contaminant Concentrations
MMPE: Mobile Multi-Phase Extraction
NAPL: Non-Aqueous Phase Liquid, “Free
Product”
NCDEQ: North Carolina Department of
Environmental Quality
NCDOT: North Carolina Department of
Transportation
NFA: Notice of No Further Action
NORR: Notice of Regulatory Requirements
NOV: Notice of Violation
NPDES: National Pollutant Discharge
Elimination System
NRP: Notice of Residual Petroleum
O&M: Operation and Maintenance
PAHs: Polynuclear Aromatic Hydrocarbons
PCA: Pre-Construction Assessment
RAL: Regulatory Action Level
SCLs: Soil Cleanup Level
SPCC: Spill Prevention Control and
Countermeasures
SVE: Soil Vapor Extraction
SVOCs: Semi-Volatile Organic Compounds
SWAP: Source Water Assessment and
Protection
SWPPP: Stormwater Pollution Prevention Plan
TCLP: Toxicity Characteristic Leaching
Procedure (EPA Method SW-846 1311)
TOC: Top of Casing
TPH: Total Petroleum Hydrocarbons
USGS: United States Geological Survey
UST: Underground Storage Tank
UVF: Ultraviolet Fluorescence
VOCs: Volatile Organic Compounds
VPH: Volatile Petroleum Hydrocarbons
___________________________________________________________________________________________
Prepared by: Geological Resources, Inc. Comprehensive Site Assessment Report
Prepared on: October 24, 2023 Minute Man #3
Project Manager: Laura Minor GRI Project No. 3148
TABLE OF CONTENTS
EXECUTIVE SUMMARY ....................................................................................................................... i
SITE INFORMATION ........................................................................................................................... iii
ACRONYMS ....................................................................................................................................... iv
1.0 SITE HISTORY AND CHARACTERIZATION ...................................................................................1
2.0 RECEPTOR INFORMATION ........................................................................................................3
3.0 LAND USE ................................................................................................................................4
4.0 SOIL ASSESSMENT ...................................................................................................................4
5.0 GROUND WATER ASSESSMENT ................................................................................................5
6.0 FREE PRODUCT INVESTIGATION AND RECOVERY ......................................................................7
7.0 HYDROGEOLOGIC INVESTIGATION ...........................................................................................7
8.0 REGIONAL GEOLOGY AND HYDROGEOLOGY .............................................................................8
9.0 SITE GEOLOGY AND HYDROGEOLOGY ......................................................................................8
10.0 DISCUSSION ............................................................................................................................9
11.0 CONCLUSIONS AND RECOMMENDATIONS ...............................................................................9
12.0 PUBLIC NOTICE ........................................................................................................................9
13.0 LIMITATIONS ......................................................................................................................... 10
14.0 REFERENCES .......................................................................................................................... 10
FIGURES
Figure 1: Site Location Map
Figure 2: Site Map
Figure 3A: Site Vicinity Map
Figure 3B: Zoning Map
Figure 4: Soil Quality Map
Figure 5: Cross-Section A-A’
Figure 6: Cross-Section B-B’
Figure 7: Estimated Contaminant Map
Figure 8: Ground Water Quality Map
Figure 9: Free Product Plume Map
Figure 10: Water Table Surface Map (3/08/23)
Figure 11: Water Table Surface Map (9/21/23)
TABLES
Table 1: UST Owner and Operator Information
Table 2: UST System Information
Table 3: Water Supply Well Information
Table 4: Adjacent Property Owner Information
Table 5: Land Use Information
___________________________________________________________________________________________
Prepared by: Geological Resources, Inc. Comprehensive Site Assessment Report
Prepared on: October 24, 2023 Minute Man #3
Project Manager: Laura Minor GRI Project No. 3148
Table 6: Summary of Soil Sample Analytical Results
Table 7: Summary of Ground Water Sample Analytical Results
Table 8: Free Product Recovery Results
Table 9: Free Product Recovery Event Information
Table 10: Free Product Recovery Cost Summary
Table 11: Well Construction and Gauging Information
Table 12: Summary of Slug Test Analyses
APPENDICES
Appendix A: State Correspondence
Appendix B: NCDEQ Incident Reports
Appendix C: Site-Specific Health and Safety Plan & Field Data Sheet
Appendix D: Roseboro Zoning Map
Appendix E: Well Permits, Well Construction Records, and Subsurface Logs
Appendix F: Laboratory Analytical Reports
Appendix G: Historical Gauging and Ground Water Quality Data
Appendix H: Slug Test Data
Appendix I: Public Notification
___________________________________________________________________________________________
Prepared by: Geological Resources, Inc. Comprehensive Site Assessment Report
Prepared on: October 24, 2023 Minute Man #3
Project Manager: Laura Minor GRI Project No. 3148
1
1.0 SITE HISTORY AND CHARACTERIZATION
GRI presents the results of the March 2023 CSA activities at the Minute Man #3 site, located at 501 North
East Street in Roseboro, Sampson County, North Carolina. A topographic map showing the general site
location and the surrounding area is included as Figure 1. These activities were conducted in accordance
with GRI Proposal No. 22-642, which was submitted to the NCDEQ on November 16, 2022, and was
approved as Task Authorization No. 29769-10 on November 18, 2022. State correspondence is included
as Appendix A.
The site is currently owned by Alhobishi Convenience Stores & Rentals, Inc. and operated as a petroleum
retail facility convenience store. Currently, two 6,000-gallon gasoline USTs, one 4,000-gallon gasoline UST,
and one 2,000-gallon kerosene UST are active at the site. One 3,000-gallon diesel UST was removed in
1992. UST owner/operator information and UST system information are included as Table 1 and Table 2,
respectively. The Registered Tank Report is shown below:
A previous release (Incident No. 12362) was reported for the site on June 30, 1994, after petroleum-
contaminated ground water was encountered during UST removal activities conducted in December 1993.
A CSA and a CAP were completed for the site by a previous consultant in September 1994 and January
1996, respectively. The incident was closed with an NFA on September 14, 1998. The NCDEQ Incident
Reports for this site are included as Appendix B.
On June 8, 2012, a monitoring well was installed downgradient of the site for an adjoining incident
(Incident No. 6601). Free product was measured in this monitoring well during the Site Check that was
completed at the Minute Man #3 site on June 18, 2012. Site Check results confirmed a release, and an
LSA was required by the NCDEQ.
___________________________________________________________________________________________
Prepared by: Geological Resources, Inc. Comprehensive Site Assessment Report
Prepared on: October 24, 2023 Minute Man #3
Project Manager: Laura Minor GRI Project No. 3148
2
On December 10, 2012, GRI personnel conducted an LSA at the site. One Type II monitoring well (MW-1)
was installed and two soil samples (MW-1 (5’) and MW-1(10’)) were collected at 5-foot intervals during
the installation of monitoring well MW-1. The concentration of benzene reported in soil sample MW-1(5’)
exceeded the MCC. The concentrations of benzene, toluene, ethylbenzene, xylenes, MTBE, naphthalene,
methylene chloride, n-propylbenzene, 1,2,4-trimethybenzene, 2-methylnaphthalene, EDB, lead, C5-C8
aliphatics, C9-C18 aliphatics and C9-C22 aromatics reported in the ground water sample collected from
MW-1 exceeded the MACs. All contaminant concentrations were below the GCLs. No free product was
observed at the site.
An NRP for the site was filed on July 22, 2016. However, during well abandonment activities, free product
was observed in MW-1. Therefore, on July 5, 2017, five additional Type II monitoring wells (MW-2 through
MW-6) were installed at the site. The concentrations of benzene, toluene, ethylbenzene, xylenes,
naphthalene, isopropylbenzene, n-propylbenzene, 1,2,4-trimethylbenzene, 1,3,5-trimethylbenzene, 1-
methylnaphthalene, 2-methylnaphthalene, EDB, and/or lead reported in the ground water samples
collected from MW-3, MW-5, and MW-6 exceeded the MACs. All contaminant concentrations were below
the GCLs. Free product thicknesses of 1.10, 1.31, and 0.67 feet were measured in monitoring wells MW-
1, MW-2, and MW-4, respectively. Free product recovery activities were conducted on MW-2 on July 20,
2017. Approximately 0.50 gallons of free product was hand-bailed from MW-2.
Between February 28, 2019, and April 16, 2021, two AFVR events and one MMPE event have been
conducted at the site. To date, approximately 25,357.78 gallons of petroleum contact water and 1.09
gallons of product have been removed.
On November 17, 2021, a CSA was required by NCDEQ to delineate the horizontal and vertical extent of
petroleum contamination. On March 8 and 9, 2023, five additional Type II monitoring wells (MW-7
through MW-11) and one Type III telescoping monitoring well (TW-1) were installed, gauged, and/or
sampled as part of the CSA activities. The concentrations of benzene, toluene, ethylbenzene, xylenes,
naphthalene, n-propylbenzene, 1,2,4-trimethylbenzene, C5-C8 aliphatics, and/or C9-C22 aromatics
reported in the ground water samples collected from MW-3, MW-6, MW-9, and MW-11 exceeded the
MACs. All contaminant concentrations were below the GCLs. Free product was measured in MW-1, MW-
2, MW-4, and MW-5 with thicknesses of 0.74, 0.31, 1.49 and 0.36 feet, respectively.
Due to the lack of delineation of contaminant concentrations, two (2) additional Type II monitoring wells
(MW-12 and MW-13) were installed along the NCDOT right-of-way located north and west of MW-5, on
September 12, 2023. The newly installed wells were sampled on September 21, 2023, while the existing
wells (MW-1 through MW-11 and TW-1) were only gauged. Concentrations of benzene, xylenes,
naphthalene, 1,2,4-trimethylbenzene, C5-C8 aliphtatics, C9-C18 aliphatics and/or C9-C22 aromatics that
exceeded the MACs were reported in MW-12 and/or MW-13. Free product thicknesses of 1.35 feet, 0.29
feet, 0.37 feet, 2.87 feet, 0.33 feet and 0.03 feet in MW-1 through MW-6, respectively.
___________________________________________________________________________________________
Prepared by: Geological Resources, Inc. Comprehensive Site Assessment Report
Prepared on: October 24, 2023 Minute Man #3
Project Manager: Laura Minor GRI Project No. 3148
3
During March 2023 monitoring well installation activities, two soil borings were advanced to 20’ BGS
screened every 2’ with a PID. Soil samples SB-1 (18’) and SB-2 (20’) were collected from newly advanced
soil borings. Soil sample SB-2 (20’) was collected during the installation of telescoping well TW-1. Soil
samples SB-1 (18’) and SB-2 (20’) were submitted for laboratory analysis. The concentrations of benzene,
toluene, ethylbenzene, xylenes, naphthalene, n-propylbenzene, n-butylbenzene, sec-butylbenzene,
isopropylbenzene, 4-isopropyltoluene, methylene chloride, styrene, 1,2,4-trimethylbenzene, 1,3,5-
trimethylbenzene, 1-methylnaphthalene, 2-methylnaphthalene, C9-C18 aliphatics, C11-C22 aromatics,
C5-C8 aliphatics, C9-C12 aliphatics, and/or C9-C10 aromatics reported in soil samples SB-1 (18’) and SB-2
(20’) exceeded the MCCs. The concentrations of ethylbenzene, naphthalene, 1,2,4-trimethylbenzene, C5-
C8 aliphatics, and/or C9-C10 aromatics reported in soil samples SB-1 (18’) and SB-2 (20’) exceeded the
Residential SCLs. The concentration of naphthalene reported in soil sample SB-1 (18’) exceeded the
Industrial SCL.
Slug tests were performed for three wells at the site on March 13 and March 27, 2023. A Site Map showing
the locations of the monitoring wells and the structures on-site is included as Figure 2. A copy of the site-
specific Health and Safety Plan is included as Appendix C.
2.0 RECEPTOR INFORMATION
Water Supply Wells:
According to the information determined during receptor survey activities conducted on December 10,
2012, three non-potable water supply wells were identified within 1,500 feet of the site. No water supply
wells were identified within 250 feet of the site. A table summarizing the Water Supply Well owner
information is included as Table 3. A Site Vicinity Map showing the locations of the water supply wells is
included in Figure 3.
Public Water Supplies:
Public water is available to the site and all of the surrounding properties. Water lines run along the public
streets in the area. Public water is supplied by Sampson County Public Works.
Surface Water:
No surface water bodies were identified within 500 feet of the subject site during the December 10, 2012,
receptor survey.
Wellhead Protection Areas:
On December 20, 2012, GRI personnel accessed the NCDEQ SWAP Program’s website to identify wellhead
protection areas in the vicinity of the subject site. The site is not located within a wellhead protection
area.
Deep Aquifers in the Coastal Plain Physiographic Region:
The surficial aquifer (which is approximately 39 feet thick in the vicinity of the site) directly overlies the
Black Creek confining unit and Black Creek aquifer.
___________________________________________________________________________________________
Prepared by: Geological Resources, Inc. Comprehensive Site Assessment Report
Prepared on: October 24, 2023 Minute Man #3
Project Manager: Laura Minor GRI Project No. 3148
4
Subsurface Structures:
No structures with basements were observed in the vicinity of the source area. However, utilities in the
source area may intersect the seasonal high water table.
3.0 LAND USE
The site is currently occupied by a petroleum retail facility and convenience store. The closest primary
residence is located on an adjacent property approximately 200 feet south of the source area. The Casons
Community Daycare is located approximately 750 feet to the southwest of the source area. The adjoining
properties are commercial. According to the Sampson County Official Zoning Map, the site and
surrounding areas are zoned Extraterritorial Jurisdiction. Adjacent property owner information and land
use information are summarized in Table 4 and Table 5, respectively. Land use and zoning information is
presented in Figure 3B. A copy of the Roseboro zoning map is included as Appendix D.
4.0 SOIL ASSESSMENT
On June 8, 2012, one off-site monitoring well installed downgradient of the site contained free product,
so on June 21, 2012, GRI personnel conducted a site check at the subject site. Ten soil borings were
advanced around the UST basin and dispensers to depths varying from 3 to 11 feet BGS. Soil samples (GP-
1 through GP-10) were collected from each of the borings. The concentration of TPH-GRO in soil sample
GP-6 exceeded the existing RAL.
During the installation of monitoring well MW-1, soil samples were collected at 5-foot intervals above the
seasonally high water table (MW-1 (5’) and MW-1 (10’)) and submitted for laboratory analysis of VOCs by
EPA Method 8260B and EPH and VPH by the MADEP method. The concentration of benzene reported in
soil sample MW-1 (5’) exceeded the MCC.
On March 8, 2023, two soil samples were collected and screened using a PID. Soil sample SB-1 (18’) was
collected during the installation of monitoring well TW-1, while SB-2 (20’) was collected from a newly
installed boring. Both soil samples were submitted for laboratory analysis of VOCs by EPA Method 8260B,
SVOCs by EPA Method 8270, and EPH and VPH by the MADEP Methods. The concentrations of benzene,
toluene, ethylbenzene, xylenes, naphthalene, n-propylbenzene, n-butylbenzene, sec-butylbenzene,
isopropylbenzene, 4-isopropyltoluene, methylene chloride, styrene, 1,2,4-trimethylbenzene, 1,3,5-
trimethylbenzene, 1-methylnaphthalene, 2-methylnaphthalene, C9-C18 aliphatics, C11-C22 aromatics,
C5-C8 aliphatics, C9-C12 aliphatics, and/or C9-C10 aromatics reported in soil samples SB-1 (18’) and SB-2
(20’) exceeded the MCCs. The concentrations of ethylbenzene, naphthalene, 1,2,4-trimethylbenzene, C5-
C8 aliphatics, and/or C9-C10 aromatics reported in soil samples SB-1 (18’) and SB-2 (20’) exceeded the
Residential SCLs. The concentration of naphthalene reported in soil sample SB-1 (18’) exceeded the
Industrial SCL. The soil sampling analytical results are presented in Table 6. A Soil Quality Map with the
results of the soil sampling in 2023 is included as Figure 4. A summary of the soil sampling data from the
March 2023 CSA activities is shown below:
___________________________________________________________________________________________
Prepared by: Geological Resources, Inc. Comprehensive Site Assessment Report
Prepared on: October 24, 2023 Minute Man #3
Project Manager: Laura Minor GRI Project No. 3148
5 Sample ID Sample Depth (ft-BGS) Benzene Toluene Ethylbenzene Total Xylenes MTBE Naphthalene Soil to Water MCCs (mg/kg) 0.0072 5.4 8 6 0.085 0.2
Residential SCLs (mg/kg) 12 1,250 60.3 3,120 156 5.5
Industrial SCLs (mg/kg) 59.4 18,600 297 46,700 1,810 27
SB-1 (18’) 18 5.48 230 87.1 448 <0.193 33.9
SB-2 (20’) 20 0.576 J 35.7 25.9 121 <0.193 13.0
Clean, disposable nitrile gloves were used for the collection of the soil samples. The samples were
collected in laboratory supplied containers and shipped to the laboratory in a cooler following proper
chain-of-custody procedures.
5.0 GROUND WATER ASSESSMENT
During LSA activities, one Type II monitoring well (MW-1) was installed to a total depth of 20 feet BGS
with a 10-foot screened interval. The concentrations of benzene, toluene, ethylbenzene, xylenes, MTBE,
naphthalene, methylene chloride, n-propylbenzene, 1,2,4-trimethybenzene, 2-methylnaphthalene, EDB,
lead C5-C8 aliphatics, C9-C18 aliphatics and C9-C22 aromatics reported in the ground water sample
collected from MW-1 exceeded the MACs. All contaminant concentrations were below the GCLs. Based
on the results of the LSA, a CSA was required.
On July 5, 2017, five additional Type II monitoring wells (MW-2 through MW-6) were installed at the site.
All newly installed monitoring wells were completed to 20 feet BGS with a 15-foot screened interval. The
concentrations of benzene, toluene, ethylbenzene, xylenes, naphthalene, isopropylbenzene, n-
propylbenzene, 1,2,4-trimethylbenzene, 1,3,5-trimethylbenzene, 1-methylnaphthalene, 2-
methylnaphthalene, EDB, and/or lead reported in the ground water samples collected from MW-3, MW-
5, and MW-6 exceeded the MACs. All contaminant concentrations were below the GCLs. Free product
thicknesses of 1.10, 1.31, and 0.67 feet were measured in monitoring wells MW-1, MW-2, and MW-4,
respectively.
Between April 8, 2019, and June 1, 2021, four comprehensive ground water sampling events were
conducted at the site. The concentrations of benzene, toluene, ethylbenzene, xylenes, naphthalene, TAA,
methyl chloride, n-propylbenzene, and/or 1,2,4-trimethylbenzene reported in the ground water samples
collected from MW-2, MW-3, MW-5, and MW-6 exceeded the MACs. All contaminant concentrations
were below the GCLs. Free product with maximum thicknesses of 1.30, 1.12, and 1.31 feet were measured
in MW-1, MW-2, and MW-4, respectively.
On March 8 and 9, 2023, five additional Type II monitoring wells (MW-7 through MW-11) and one Type III
telescoping well (TW-1) were installed at the site. The newly installed Type II wells were completed to 20
feet BGS with a 15-foot screened interval, and the Type III telescoping well was completed to 45 feet BGS
with a 5-foot screened interval. On March 13, 2023, all wells were gauged, purged, and/or sampled. The
___________________________________________________________________________________________
Prepared by: Geological Resources, Inc. Comprehensive Site Assessment Report
Prepared on: October 24, 2023 Minute Man #3
Project Manager: Laura Minor GRI Project No. 3148
6
concentrations of benzene, toluene, ethylbenzene, xylenes, naphthalene, n-propylbenzene, 1,2,4-
trimethylbenzene, C5-C8 aliphatics, and/or C9-C22 aromatics reported in the ground water samples
collected from MW-3, MW-6, MW-9, and MW-11, respectively, exceeded the MACs. All contaminant
concentrations were below the GCLs. Free product thicknesses of 0.74, 0.31, 1.49, and 0.36 feet were
measured in monitoring wells MW-1, MW-2, MW-4, and MW-5, respectively.
Due to the lack of delineation of contaminant concentrations, two (2) additional Type II monitoring wells
(MW-12 and MW-13) were installed along the NCDOT right-of-way located north and west of MW-5,
respectively, on September 12, 2023. The newly installed wells were sampled on September 21, 2023,
while the existing wells (MW-1 through MW-11 and TW-1) were only gauged. Concentrations of benzene,
xylenes, naphthalene, 1,2,4-trimethylbenzene, C5-C8 aliphtatics, C9-C18 aliphatics and/or C9-C22
aromatics that exceeded the MACs were reported in MW-12 and/or MW-13. Free product thicknesses of
1.35 feet, 0.29 feet, 0.37 feet, 2.87 feet, 0.33 feet and 0.03 feet in MW-1 through MW-6, respectively. A
summary of the March 13, 2023 (MW-1 through MW-11 and TW-1) and September 21, 2023 (MW-12 and
MW-13) ground water analytical data is shown below:
Contaminant
of Concern Benzene Toluene Ethylbenzene Xylenes MTBE Naphthalene Well
ID
MACs (μg/l) 1 600 600 500 20 6
GCL (μg/l) 5,000 260,000 80,000 50,000 20,000 6,000
MW-1 FP FP FP FP FP FP
MW-2 FP FP FP FP FP FP
MW-3 1,240 10,400 1,360 6,940 <14.0 311
MW-4 FP FP FP FP FP FP
MW-5 FP FP FP FP FP FP
MW-6 50.8 2,030 190 1,320 <1.40 <4.70
MW-7 0.954 4.12 0.925 5.17 <0.140 <0.470
MW-8 0.626 5.68 2.51 8.59 <0.140 0.618 J
MW-9 9.26 124 103 298 <1.40 52.7
MW-10 <0.180 <0.220 <0.170 <0.21 <0.140 <0.470
MW-11 56.6 2.75 45.7 108 0.241 J 2.16
MW-12 1.92 34.9 110 1,140 <0.140 42.8
MW-13 0.631 8.85 46.0 301 0.231 J 53.1
TW-1 <0.180 0.441 J <0.170 <0.21 <0.140 <0.470
All samples were collected in accordance with the NCDEQ guidelines. Clean, disposable bailers and nitrile
gloves were used for the collection of the ground water samples. The samples were collected in
laboratory supplied containers and shipped to the laboratory in a cooler following proper chain-of-custody
procedures. A laboratory supplied trip blank was included in the sample cooler. No detectable
concentrations of requested method constituents were reported in the trip blank.
The baseline contaminant mass at the site was determined in GRI’s August 26, 2021, MMPE and Ground
Water Monitoring Report using total BTEX, MTBE and naphthalene concentrations from the July 2017
ground water sampling event as well as the maximum historical water column height observed in each
___________________________________________________________________________________________
Prepared by: Geological Resources, Inc. Comprehensive Site Assessment Report
Prepared on: October 24, 2023 Minute Man #3
Project Manager: Laura Minor GRI Project No. 3148
7
area. The contaminant plume was divided into three areas (Areas 1 through 3) based on the benzene
concentrations during the July 2017 ground water sampling event. For wells not sampled due to the
presence of free product, GCL values were used. The locations of the monitoring wells are shown in Figure
2. Well permits, well construction records, and boring logs for the monitoring wells installed during CSA
activities are included as Appendix E.
Cross sections A-A’ and B-B’ are included as Figures 5 and 6; the lines of cross section are included on
Figure 2. A map of the contaminant mass areas are included as Figure 7. A Ground Water Quality Map
for the March 2023 and September 2023 ground water sampling event is included as Figure 8. A summary
of laboratory analyses for the ground water samples collected during CSA activities are included as Table
7. Complete copies of the laboratory reports for the soil and ground water samples are included as
Appendix F.
6.0 FREE PRODUCT INVESTIGATION AND RECOVERY
Free product is currently present in MW-1 through MW-6. Between July 20, 2017, and April 16, 2021,
hand bailing, two AFVR events, and one MMPE event have been conducted on MW-1, MW-2, and MW-4
at the site as part of free product recovery activities. A total of 25,357.78 gallons of affected ground water
was recovered during these events. Approximately 0.50 gallons of liquid free product and 0.59 gallons of
vaporized free product has been recovered from these free product removal activities. A free product
plume map is included as Figure 9. Summaries of the free product removal results and costs are included
as Tables 9 through 11. Based on the results of the AFVR event, AFVR does not appear to be the most
cost-effective method of free product removal.
7.0 HYDROGEOLOGIC INVESTIGATION
The depths to ground water in the Type II monitoring wells (MW-1 through MW-11) measured on March
13, 2023, ranged from 13.98 to 15.13 feet below the tops of well casings. Ground water elevations at the
site, based on an assumed datum of 100.00 feet assigned to MW-1, ranged from 86.15 to 86.49 feet
relative to a temporary benchmark. Based on this information, ground water flowed radially away from
MW-2. The horizontal hydraulic gradient across the site was approximately 0.001 feet per foot. The
vertical hydraulic gradient calculated for paired wells MW-1/TW-1 was approximately 0.002 feet per foot
in the downward direction. On September 21, 2023, monitoring wells, MW-1 through MW-13 and TW-1
were gauged, purged and/or sampled. Depths to ground water in the Type II monitoring wells ranged
from 12.80 to 14.98 feet below the tops of well casings. Ground water elevations at the site, based on an
assumed datum of 100.00 feet assigned to MW-1, ranged from 87.35 to 88.18 feet relative to a temporary
benchmark. Ground water flow was in a radial pattern away from MW-2.
A summary of ground water elevation data obtained during assessment activities to date is presented in
Table 12. Water Table Surface Maps based on the March 13, 2023, and September 21, 2023, gauging
data are included as Figure 10 and Figure 11, respectively. Monitoring wells RBP-17 and RBP-42 (which
are monitoring wells MW-17 and MW-42 associated with Roseboro BP (Incident No. 6601)) were surveyed
and located with a GPS on March 13, 2023. Historical gauging and ground water quality data for RBP-17
and RBP-42 are included as Appendix G.
___________________________________________________________________________________________
Prepared by: Geological Resources, Inc. Comprehensive Site Assessment Report
Prepared on: October 24, 2023 Minute Man #3
Project Manager: Laura Minor GRI Project No. 3148
8
Rising head slug tests were conducted in MW-7, MW-8 and TW-1 on March 13 and March 27, 2023.
Hydraulic conductivities in the Type II monitoring wells, calculated using the Bouwer and Rice method,
ranged from 1.280 x 10-1 feet per minute (184.3 feet per day) to 2.557 x 100 feet per minute (3,682 feet per
day). The average hydraulic conductivity was 1.343 x 100 feet per minute (1,933 feet per day). Seepage
velocities, calculated using the equation V = K(dh/dl)/ne, ranged from 6.14 x 10-1 to 1.23 x 101 feet per day
(224 to 4,480 feet per year). The average seepage velocity was 6.44 x 100 feet per day (2,350 feet per
year). The hydraulic conductivity in the Type III monitoring well calculated using the Bouwer and Rice
method was 2.586 x 10-3 feet per minute (3.724 feet per day). The seepage velocity calculated for the
Type III monitoring well was 2.48 x 10-2 feet per day (9.06 feet per year). A summary of the results of slug
test analyses is included in Table 13. Calculations and raw data from the slug tests have been included as
Appendix H.
8.0 REGIONAL GEOLOGY AND HYDROGEOLOGY
According to the 1985 Geologic Map of North Carolina, the site is located in the Black Creek Formation.
which is described as gray to black lignitic clay, with thin beds of micaceous sand and thick lenses of cross-
bedded sand. Bedrock was not encountered during monitoring well installation activities. The surficial
aquifer directly overlies the Black Creek confining unit and the Black Creek aquifer.
9.0 SITE GEOLOGY AND HYDROGEOLOGY
Based on observations made during assessment activities, surficial soils observed at the site consist of
various clays, silts, and sands to approximately 45 feet BGS. A summary of the current ground water
gauging data from the September 21, 2023, site visit is shown below:
Well ID
Screened
Interval
(x to y ft.
BGS)
Bottom
of Well
(ft. BGS)
Top of
Casing
Elevation
(ft.)
Depth to
Water from
Top of Casing
(feet)
Free
Product
Thickness
(ft.)
Ground
Water
Elevation
(ft.)
MW-1 10 - 20 20 100.00 13.62 1.35 87.54
MW-2 5 - 20 20 100.87 13.46 0.29 88.18
MW-3 5 - 20 20 100.75 13.56 0.37 87.51
MW-4 5 - 20 20 100.20 14.98 2.87 87.68
MW-5 5 - 20 20 100.34 13.17 0.33 87.45
MW-6 5 - 20 20 100.29 12.80 0.03 87.51
MW-7 5 - 20 20 100.71 13.25 --- 87.46
MW-8 5 - 20 20 100.76 13.31 --- 87.45
MW-9 5 - 20 20 100.77 13.33 --- 87.44
MW-10 5 - 20 20 101.30 13.93 --- 87.37
MW-11 5 - 20 20 101.04 13.69 --- 87.35
MW-12 5 - 20 20 101.54 14.11 --- 87.43
MW-13 5 - 20 20 100.98 13.49 --- 87.49
TW-1 40 - 45 45 99.86 13.54 --- 86.32
On March 13, 2023, monitoring wells MW-1 through MW-11 and TW-1 were gauged, purged and/or
sampled. Depths to ground water in the Type II monitoring wells ranged from 13.98 to 15.13 feet below
the tops of well casings Ground water elevations at the site, based on an assumed datum of 100.00 feet
___________________________________________________________________________________________
Prepared by: Geological Resources, Inc. Comprehensive Site Assessment Report
Prepared on: October 24, 2023 Minute Man #3
Project Manager: Laura Minor GRI Project No. 3148
9
assigned to MW-1, ranged from 86.15 to 86.49 feet relative to a temporary benchmark. Ground water
flow was generally radial away from MW-2. On September 21, 2023, monitoring wells, MW-1 through
MW-13 and TW-1 were gauged, purged and/or sampled. Depths to ground water in the Type II monitoring
wells ranged from 12.80 to 14.98 feet below the tops of well casings. Ground water elevations at the site,
based on an assumed datum of 100.00 feet assigned to MW-1, ranged from 87.35 to 88.18 feet relative
to a temporary benchmark. Ground water flow was in a radial pattern away from MW-2. Please note
that natural attenuation parameters were collected in the field during the September 2023 gauging (and
limited sampling) event. A copy of the field data sheet is included in Appendix C.
10.0 DISCUSSION
On June 8, 2012, a monitoring well was installed downgradient of the site for an adjoining incident
(Incident No. 6601). Free product was measured in this monitoring well during the Site Check that was
completed at the Minute Man #3 site on June 18, 2012. Site Check results confirmed a release, and an
LSA was required by the NCDEQ.
To date, thirteen Type II monitoring wells and one telescoping well have been installed to determine the
horizontal and vertical extent of the release. Free product has been observed in the vicinity of the UST
basin and the former dispenser islands in monitoring wells MW-1 through MW-6. Monitoring well MW-
4 contained the highest ground water contamination levels during the CSA activities. Based on the current
risk ranking of the site, free product removal activities will be required.
The risk ranking for the site has been established as intermediate due to the presence of free product.
GRI recommends continuing free product recovery at the site in order to lower the risk ranking. A
comprehensive ground water sampling event that includes monitoring wells RBP-42 and RBP-17 (which
are monitoring wells MW-42 and MW-17 associated with Roseboro BP (Incident No. 6601)) should be
conducted at the site.
11.0 CONCLUSIONS AND RECOMMENDATIONS
• Ground water flow direction is radial away from MW-2.
• The free product plume remains undefined horizontally to the northwest.
• Based on this site assessment, the site risk classification should remain intermediate.
• Free product removal should continue until free product is no longer present.
• GRI recommends free product recovery and comprehensive ground water sampling activities to
be conducted at the site.
• Prior to further free product removal and/or assessment and sampling activities, GRI also
recommends that a site check be completed by the current tank owner to determine if a new
release has occurred.
12.0 PUBLIC NOTICE
Copies of the applicable portions of this CSA report have been forwarded to the appropriate local officials
by certified mail. Copies of the cover letters are included in Appendix I.
___________________________________________________________________________________________
Prepared by: Geological Resources, Inc. Comprehensive Site Assessment Report
Prepared on: October 24, 2023 Minute Man #3
Project Manager: Laura Minor GRI Project No. 3148
10
13.0 LIMITATIONS
This report has been prepared for the exclusive use of Campbell Oil Company for specific application to
the referenced site in Sampson County, North Carolina. The assessment was conducted based on the
scope of work and level of effort desired by the NCDEQ and with resources adequate only for that scope
of work. Our findings have been developed in accordance with generally accepted standards of
environmental practices in the State of North Carolina, available information, and our professional
judgment. No other warranty is expressed or implied.
The data that is presented in this report is indicative of conditions that existed at the precise locations
sampled and at the time the samples were collected. In addition, the data obtained from samples would
be interpreted as being meaningful with respect to parameters indicated in the laboratory report. No
additional information can logically be inferred from this data.
14.0 REFERENCES
Bouwer, H., 1989, The Bouwer and Rice slug test - an update, Ground Water, vol.27, no. 3, pp.304-309
Bouwer, H. and R.C. Rice, 1976, A slug test method for determining hydraulic conductivity of unconfined
aquifers with completely or partially penetrating wells, Water Resources Research, vol. 12, no.3,
pp. 423-428
Department of Natural Resources and Community Development, 1985, Geologic Map of North Carolina,
1 sheet
Fetter, C. W., 1988, Applied Hydrogeology, Second Edition, Macmillan Publishing Company, 592 p.
North Carolina Department of Environment and Natural Resources, 2000, Ground Water Section
Guidelines for the Investigation and Remediation of Soil and Ground Water, 79 p.
North Carolina Department of Environmental Quality, Division of Waste Management – UST Section
Assessment Guidelines: Petroleum and Hazardous Substances UST Releases; Petroleum Non-UST
Releases, January 19, 2021, Version
Initial Abatement Action Report – Site Check, Minute Man #3, Geological Resources, Inc., July 24, 2012
Phase I Limited Site Assessment Report, Minute Man #3, Geological Resources, Inc., January 22, 2023
FIGURES
SITE LOCATION
Figure 1
Site Location
Minute Man #3
Corner of Highway 24 and Highway 211
Roseboro, North Carolina
Sampson County
Incident No. 29769
GRI Project No. 3148
500 M
2000 FT
Date: 10/13/2023 Location: 34.9557861° N -78.5102027° W
D
a
d
"J
"J
D.
SITE
WSW-3
WSW-2
WSW-1
08012524505
08080584001
08089532001
0800800800108076208
5
0
1
0 8 029596002081147686010 8 0 2 9 3 1 25 0 1
08015669002
08104824301
0 81 0 61 640 01
08115016003
N EAST STBROAD STW N O R T H S T
E C L I N T O N S T
C U L B R E T H S T
NE RAILROAD ST
N WEST STE NORTH STOAK ST
W C LI N T ON ST E R O S E B O R O S T
E DR MARTIN L KING JR BLVD
E P L E A S A N T S T
P
E
A
R
L S
T
MAPLE ST
LEGI
ON STS U M N E R A V E
B
U
LL
A
R
D ST CYPRESS STNATI
ONAL STPARK DRW R O S E B O R O STMCPHERSON STVA
N
C
E ST HOBBS STW DR MARTIN L KING JR BLVD
N CHURCH STS EAST STDILLO N S TB U T L E R S TN BROAD STBOWEN STE H OW A RD STS HALL STN HALL STH E R R IN G S T
NW RAILROAD ST
S WEST STSW RAI
LROAD STE R O S E B O R O STBROAD STNW RAI
LROAD STROSEBORO HWYS CHURCH SS BROADW P L E A S A N T S T
W R O S E B O R O S T
FIGURE 3A: SITE VICINITY MAP
MINUTE MAN #3
501 N. EAST STREET
ROSEBORO, SAMPSON COUNTY
NORTH CAROLINA
INCIDENT NO. 29769
GRI NO. 3148
PREPARED BY:
GEOLOGICAL RESOURCES, INC.
JANUARY 22, 2013
³
0 300150
Feet
1 inch = 300 feet
1,500-FOOT RADIUS
1,000-FOOT RADIUS
250-FOOT RADIUS
1
2
4
3
LEGEND
"J Water Supply Well
D.Water Supply Well (Destroyed)
Centerlines
Adjacent Properties and Well Owners
Parcels (Yellow)
Land Use Code1
500-FOOT RADIUS
CORNER OF HIGHWAY 24 & HIGHWAY 211
"J
"J
D.
SITE
WSW-3
WSW-2
WSW-1
N EAST STBROAD STW N O R T H S T
E C L I N T O N S T
C U L B R E T H S T
NE RAILROAD ST
N WEST STE NORTH STOAK ST
W C LI N T ON ST E R O S E B O R O S T
E DR MARTIN L KING JR BLVD
E P L E A S A N T S T
P
E
A
R
L S
T
MAPLE ST
LEGI
ON STS U M N E R A V E
B
U
LL
A
R
D ST CYPRESS STNATI
ONAL STPARK DRW R O S E B O R O STMCPHERSON STVA
N
C
E ST HOBBS STW DR MARTIN L KING JR BLVD
N CHURCH STS EAST STDILLO N S TB U T L E R S TN BROAD STBOWEN STE H OW A RD STS HALL STN HALL STH E R R IN G S T
NW RAILROAD ST
S WEST STSW RAI
LROAD STE R O S E B O R O STBROAD STNW RAI
LROAD STROSEBORO HWYS CHURCH SS BROADW P L E A S A N T S T
W R O S E B O R O S T
FIGURE 3B: ZONING MAP
MINUTE MAN #3
501 N. EAST STREET
ROSEBORO, SAMPSON COUNTY
NORTH CAROLINA
INCIDENT NO. 29769
GRI NO. 3148
PREPARED BY:
GEOLOGICAL RESOURCES, INC.
JANUARY 22, 2013
³
0 300150
Feet
1 inch = 300 feet
1,500-FOOT RADIUS
1,000-FOOT RADIUS
250-FOOT RADIUS
1
2
4
3
500-FOOT RADIUS
LEGEND
D.Water Supply Well (Destroyed)
"J Water Supply Well
Centerlines
ZONING - ETJ
nc_sampson_parcels_poly
Land Use Code1
CORNER OF HIGHWAY 24 & HIGHWAY 211
Sample ID
Date
Collected
(mm/dd/yy)
Sample
Location
Sample
Depth
(ft-BGS)
50 100 NE NE NE NE NE NE
NE NE 0.0072 5.4 8 6 0.085 0.2
NE NE 12 1,250 60.3 3,120 156 5.5
NE NE 59.4 18,600 297 46,700 1,810 27
SB-1 (18') 03/08/23 TW-1 18 NR NR 5.48 230 87.1 448 <0.193 33.9
SB-2 (20')03/08/23 UST Basin 20 NR NR 0.576 J 35.7 25.9 121 <0.193 13.0
RALs (mg/kg)
Soil-to-Water MCCs (mg/kg)Total XylenesMTBENaphthaleneContaminant of Concern Gasoline-Range TPHDiesel-Range TPHBenzeneTolueneEthylbenzeneResidential SCLs (mg/kg)
Industrial/Commercial Soil Cleanup Levels (mg/kg)
Sample IDDate Sampled1 600 600 500 20 6
5,000 260,000 80,000 50,000 20,000 6,000
03/13/23 FP FP FP FP FP FP
03/13/23 1,240 10,400 1,360 6,940 <14.0 311
03/13/23 FP FP FP FP FP FP
03/13/23 FP FP FP FP FP FP
MW-9 03/13/23 9.26 124 103 298 <1.40 52.7
MW-13 09/21/23 0.631 8.85 46.0 301 0.231 J 53.1
TW-1 03/13/23 <0.180 0.441 J <0.170 <0.21 <0.140 <0.470
Contaminant of Concern
MW-1
MW-3
MW-4 BenzeneTolueneEthylbenzeneXylenesMTBENaphthaleneMW-5
GCL (µg/l)
MAC (µg/l)
7
8
9
10
11
TABLES
UST ID Number 1-4 Facility ID Number
Owner or Operator?
Owner/Operator
UST ID Number 1-4 Facility ID Number
Owner or Operator?
Owner/Operator
Address Telephone Number
Post Office Box 637, Elizabethtown, NC 28337 1-910-862-8423
00-0-0000009436
Name of Owner or Operator Dates of Ownership / Operation
Campbell Oil Company, Inc. Unknown-11/02/16
Alhobishi Convenience Stores & Rentals, Inc. 11/02/2016 - Current
Address Telephone Number
Post Office Box 807, Saint Pauls, NC 28384 1-910-521-9030
TABLE 1
UST OWNER/OPERATOR INFORMATION
MINUTE MAN #3 (INCIDENT NO. 29769)
00-0-0000009436
Name of Owner or Operator Dates of Ownership / Operation
Date: 10/25/19
Was
Release
Associated
with UST
System?
(Yes / No)
1 Gasoline 6,000 05/10/1968 Single Wall Steel 8'