RA-940_6821_CA_LSA_20190308

Phase I Limited Site Assessment Report
Mann Store, Incident TF-6281
7070 NC Highway 87
Pittsboro, Chatham County, North Carolina
S&ME Project No. 4305-18-110
PREPARED FOR:
NCDEQ, DWM, UST Section
1646 Mail Service Center
Raleigh, NC 27699-1646
PREPARED BY:
S&ME, Inc.
3201 Spring Forest Road
Raleigh, NC 27616
March 8, 2019

S&ME, Inc. | 3201 Spring Forest Road | Raleigh, NC 27616 | p 919.872.2660 | www.smeinc.com

March 8, 2019
NCDEQ, DWM, UST Section
1646 Mail Service Center
Raleigh, NC 27699-1646
Attention: Ms. Linda Blalock Via email: [e-mail]
Reference: Phase I Limited Site Assessment Report
Mann Store, Incident TF-6281, RA-940
7070 NC Highway 87
Pittsboro, Chatham County, North Carolina
S&ME Project No. 4305-18-110

Dear Ms. Blalock:
S&ME, Inc., (S&ME) presents this report in accordance with the North Carolina Department of Environmental
Quality/S&ME Contract No. N17002 and S&ME Proposal No. 43-18-00383 dated April 23, 2018, as authorized by
Task Authorization No. TA-01 dated April 23, 2018.
The scope of services included the preparation of a Phase I Limited Site Assessment (LSA), which includes the
installation of one well in the source area, and collection of a water sample from the adjacent property’s water
supply well.
If you have any questions or comments regarding this report, please contact us at your convenience.
Sincerely,
S&ME, Inc.
Michael W. Pfeifer Thomas P. Raymond, P.E., P.M.P.
Senior Project Manager Senior Engineer
[e-mail] [e-mail]

Attachment: Phase I Limited Site Assessment Report
Phase I Limited Site Assessment Report
Mann Store, Incident TF-6281, RA-940
7070 NC Highway 87
Pittsboro, Chatham County, North Carolina
S&ME Project No. 4305-18-110
March 8, 2019 ii

Table of Contents
1.0 Site Information ................................................................................................................ 1
1.1 Site Identification ............................................................................................................................ 1
1.2 Information about Contacts Associated with the Leaking UST System ................................. 1
1.3 Information about Release ............................................................................................................ 1
1.4 Information about the Report ....................................................................................................... 1
1.5 Certification ..................................................................................................................................... 2
2.0 Executive Summary .......................................................................................................... 3
3.0 Scope of Services ............................................................................................................... 4
3.1 Contract Information ..................................................................................................................... 4
3.2 Approved Scope of Services ......................................................................................................... 4
4.0 Site History and Characterization ................................................................................. 4
4.1 UST Owner and Operator Information ....................................................................................... 5
4.2 UST Information ............................................................................................................................. 5
4.3 Description of the UST Release .................................................................................................... 5
4.4 Owners and Occupants of Adjoining/Nearby Properties and Land Use ............................... 6
5.0 Site Reconnaissance and Receptor Information ......................................................... 6
5.1 Water Supply Wells ....................................................................................................................... 6
5.2 Public Water Supplies .................................................................................................................... 6
5.3 Surface Water .................................................................................................................................. 6
5.4 Wellhead Protection Areas ............................................................................................................ 6
5.5 Subsurface Structures .................................................................................................................... 6
5.6 Risk Classification .......................................................................................................................... 7
6.0 Soil and Groundwater Sampling ................................................................................... 7
6.1 Monitor Well Installation and Soil Sampling ............................................................................. 7
6.2 Groundwater Sampling ................................................................................................................. 8
6.3 Summary of Soil Analytical Results............................................................................................. 8
6.4 Summary of Groundwater Analytical Results ........................................................................... 8
6.5 Regional and Site Geology and Hydrogeology .......................................................................... 9
6.5.1 Soil and Bedrock ................................................................................................................................ 9
Phase I Limited Site Assessment Report
Mann Store, Incident TF-6281, RA-940
7070 NC Highway 87
Pittsboro, Chatham County, North Carolina
S&ME Project No. 4305-18-110
March 8, 2019 iii
6.5.2 Hydrogeology .................................................................................................................................... 9
6.6 Evaluation of Soil and Groundwater Information ..................................................................... 9
6.6.1 Current Extent and Severity of Contamination ............................................................................... 9
6.6.2 Cleanup Levels Achieved ................................................................................................................. 10
7.0 Conclusion and Recommendations ............................................................................. 10

List of Figures
Figure 1 – Site Vicinity Map
Figure 2 – Site Map
Figure 3 – Receptor Survey Map
Figure 4 – Constituent Map

List of Tables
Table 1 – UST Owner/Operator Information
Table 2 – UST System Information
Table 3 – Summary of Property Owners/Occupants Information
Table 4 – Public and Private Confirmed Water Supply Well Information
Table 5 – Monitor Well Construction Data and Groundwater Elevations
Table 6 – Summary of Soil Analytical Results
Table 7 – Summary of Groundwater Analytical Results
Table 8 – Summary of Water Supply Well Analytical Results

Appendices
Appendix I – Figures
Appendix II - Tables
Appendix III – Photographic Log
Appendix IV - Limited Site Assessment Risk Classification and Land Use Form
Appendix V – Field Notes and Field Sampling Forms
Appendix VI – Laboratory Analytical Reports and Chain of Custody Forms

Phase I Limited Site Assessment Report
Mann Store, Incident TF-6281, RA-940
7070 NC Highway 87
Pittsboro, Chatham County, North Carolina
S&ME Project No. 4305-18-110
March 8, 2019 1
1.0 Site Information
1.1 Site Identification
• Date of Report: 3/8/2019
• Facility I.D. None UST Incident No.: __6281__ UST No.: RA-940
• Site Risk: High . Site Rank: Unknown . Land Use Category: Light Industrial
• Site Name: __Mann Store____
• Site Address: 7070 NC Highway 87
• City/Town: Pittsboro . Zip Code: 27312 . County: Chatham
• Description of Geographical Data (e.g., diesel fill port): Former UST Area
• Location Method (GPS, Topographical map, other): Google Earth
• Latitude (decimal degrees): 35.804004° Longitude (decimal degrees): -79.250509°
1.2 Information about Contacts Associated with the Leaking UST System
• Former UST Owner: Glen Mann (deceased)
• Address: Not Applicable Telephone: Not Applicable
• UST Operator: Glen Mann (deceased)
• Address: Not Applicable Telephone: Not Applicable
• Property Owners: Glenette and Ronald Vaughn
• Consultant/Contractor: S&ME, Inc.
• Address: 3201 Spring Forest Road, Raleigh, NC Telephone: [phone]
• Analytical Laboratory: Con-Test Analytical Laboratory State Certification No.: 652
• Address: 39 Spruce Street, East Longmeadow, MA 01028 Telephone: [phone]
1.3 Information about Release
• Date Discovered: 12/19/1990
• Estimated Quantity of Release: Unknown
• Cause of Release: Unknown
• Source of Release (Dispenser/Piping/UST): UST System
• Sizes and contents of UST system(s) from which the release occurred: Two 1,000-gallon gasoline
USTs, one 2,000-gallon gasoline UST, one 550-gallon kerosene UST.
• Criteria Used to Classify Risk: In 1998, a concentration of benzene (34.5 micrograms per liter) was
detected in water supply well WSW-8.
1.4 Information about the Report
• Date of Soil and Groundwater Sampling: Violations of 2L Standards in MW-1 and off-site water
supply well WSW-8. Several active water supply wells within 1,000 feet of the site.
Phase I Limited Site Assessment Report
Mann Store, Incident TF-6281, RA-940
7070 NC Highway 87
Pittsboro, Chatham County, North Carolina
S&ME Project No. 4305-18-110
March 8, 2019 2
1.5 Certification
I, Thomas P. Raymond, a Licensed Engineer for S&ME, do certify that the information contained in this report is
correct and accurate to the best of my knowledge. S&ME is licensed to practice geology/engineering in North
Carolina. Geology License Certification #C-145 and Engineering License Certification #F-0176.

Thomas P. Raymond, P.E., P.M.P.
Phase I Limited Site Assessment Report
Mann Store, Incident TF-6281, RA-940
7070 NC Highway 87
Pittsboro, Chatham County, North Carolina
S&ME Project No. 4305-18-110
March 8, 2019 3
2.0 Executive Summary
On May 24, 2018 and May 25, 2018, S&ME conducted a Phase I Limited Site Assessment (LSA) at the Mann Store
site located at 7070 NC Highway 87, Pittsboro, North Carolina. The LSA included installing monitor well (MW-1)
on site, collecting groundwater and soil sample from MW-1, sampling of a nearby water supply well (WSW-8), and
conducting a site reconnaissance, and a sensitive receptor survey. A Site Vicinity Map is included as Figure 1.
Photos taken during the site assessment are included in Appendix III.
A composite soil sample collected from the soil boring associated with monitor well MW-1 on May 24, 2018 was
analyzed for volatile organic compounds (VOCs) by EPA Method 8260B, and volatile petroleum hydrocarbons
(VPH) by the Massachusetts Department of Environmental Protection (MADEP) method. Results indicated that
none of the targeted constituents were detected above the laboratory’s method detection limits.
The groundwater sample collected from monitor well MW-1 on May 25, 2018 was analyzed for VOCs by EPA
Method 6200B, and VPH by the MADEP method. The laboratory analytical results of the sample collected from
MW-1 indicated that benzene, naphthalene, and methyl tert-butyl ether were detected in concentrations above
the groundwater quality standards established by 15A NCAC 02L .0202 (2L Standards). In addition, carbon fraction
chains, C5-C8 Aliphatics, C9-C12 Aliphatics, and C9-C10 Aromatics, were detected above the 2L Standard by the
MADEP VPH analysis method. Several additional constituents were detected below the 2L Standards.
S&ME sampled the neighboring water supply well (WSW-8) located approximately 50 feet south of the former
UST bed. The sample was analyzed for VOCs by EPA Method 6200B, and VPH by the MADEP method. Several
constituents were detected above their reporting limit. Benzene was detected at a concentration exceeding the 2L
Standard.

Eight active water supply wells (WSW-1 through WSW-8) were identified on properties within 1,000 feet of the
subject site. Municipal water service is not available for the area and it should be assumed that properties in the
area use water supply wells. Three surface water bodies were identified during the receptor survey: Long Branch
Stream is located to the south, one intermittent stream is located to the north of the site, and one farm pond is
located northwest of the site.

• The following recommendations are presented:
1. Install additional monitor wells on other areas of the site to establish groundwater flow direction and
delineate the extent of groundwater contamination.
2. Obtain access agreements from properties within 1,000 feet of the subject property and collect samples to
determine if petroleum constituents are present in these wells.
Phase I Limited Site Assessment Report
Mann Store, Incident TF-6281, RA-940
7070 NC Highway 87
Pittsboro, Chatham County, North Carolina
S&ME Project No. 4305-18-110
March 8, 2019 4
3.0 Scope of Services
3.1 Contract Information
The scope of services for this report was performed in general accordance with S&ME’s proposal number 43-
180043, dated April 23, 2018. The scope of services was authorized by the North Carolina Department of
Environmental Quality (NCDEQ’s) Task Authorization TA-01, dated April 23, 2018, and within contract number
N17002.
3.2 Approved Scope of Services
S&ME’s approved Scope of Services for this Task Authorization included conducting a project review, and
conducting a Phase I LSA, which included identifying potential and sensitive receptors within 1,000 feet of the site,
the installing four monitor wells on the site, collecting soil samples during the monitoring well installation, and
collecting a groundwater sample from the monitoring well. In addition, S&ME was also tasked with collecting a
sample from the water supply well of the neighboring property (WSW-8).

The scope of services was completed as proposed, with the exception of the following:

• Three additional monitor wells were not installed on site due to shallow rock bed encountered during
installation of monitor well MW-1.

4.0 Site History and Characterization
The Mann Store site is located at 7070 NC Highway 87 in Pittsboro, Chatham County, North Carolina. According to
Chatham County Land Use and Planning Map accessed on June 6, 2018, the site is classified as a light industrial
district surrounded by residential-agricultural use properties. Currently, the building is vacant and the site is
unoccupied. Structures on the site include one unoccupied building with a car port, and three garages. One large
shipping and storage container and a shed are also located on the site. The property had previously been used as
a gas station, owned and operated by Mr. Glen Mann. After the closure of the gas station, in 1966, the fuel pumps
were removed and the property was used as a TV and Appliance Repair Service and Automotive Repair Shop.

Four USTs were removed from the property on December 19, 1990. A free product film was observed on top of
the groundwater that had infiltrated the excavation site. Approximately 217 cubic yards of soil from the UST
system’s bed was removed at the time of excavation and six soil samples were collected for analysis. Laboratory
results reported levels of total petroleum hydrocarbon (TPH) concentrations above regulatory limits. Water supply
well WSW-8, located at 7042 Highway 87 North in Pittsboro, North Carolina, approximately 50 feet from the
release site was first sampled on March 5, 1992. Results reported from the laboratory analytical data indicated
levels above regulatory limits. The Raleigh Regional Office recommended the Mann Store site to the Federal Trust
Fund program on March 26, 1992. Subsequently, two water supply wells were sampled by the Federal Trust Fund,
one being water supply well WSW-8, the other has since been destroyed. Benzene was reported above its 2L
Standard in water supply well WSW-8 at this time.
Phase I Limited Site Assessment Report
Mann Store, Incident TF-6281, RA-940
7070 NC Highway 87
Pittsboro, Chatham County, North Carolina
S&ME Project No. 4305-18-110
March 8, 2019 5
S&ME advanced four soil borings and collected one soil sample and one water supply sample on July 21, 1998. At
this time the soil sample reported with TPH concentrations above the regulatory limit. The water supply well
(WSW-8) results were also reported with several constituents above reporting limits and benzene above its 2L
Standard. On August 21, 1998, following the results, bottled water service was set up for the tenants of the
residence associated with WSW-8.

A site reconnaissance, sensitive receptor survey, and collection of water supply well samples were conducted on
December 15, 2004 by Groundwater Management Associates, Inc. (GMA). Six water supply wells (WSW-1, WSW-4,
WSW-5, WSW-7, WSW-8 and the since destroyed well on the property located to the north of the site) were
sampled from properties within 1,000 feet of the site. Of these wells, water supply well WSW-8 was the only one
reported with constituents above the detection limit. Benzene was reported above its 2L Standard. An additional
sampling event was conducted on January 3, 2006 by GMA. Samples from WSW-1, WSW-4, WSW-7 and WSW-8
were collected. Concentrations of contaminants were similar to the results of the sampling event conducted in
2004. Benzene was detected again above its 2L Standard indicating a consistent pattern of contamination from
1991 through 2006. The most recent sampling event was conducted in 2010 with similar results to the 2006
sampling event. Benzene was detected in a concentration exceeding the 2L Standard and several other VOCs were
detected in WSW-8 below their respective 2L Standards. There were no detections of targeted contaminant
constituents in WSW-1, WSW-4, WSW-5, or WSW-7.

The property is now owned by Glenette and Ronald Vaughn - husband and wife. Glenette Mann is the daughter
of Mr. and Mrs. Mann. She inherited upon the death of Mrs. Mann; Mr. Mann pre-deceased her. Topography of
the area is generally flat. Groundwater elevations and flow have not been calculated due to the limitation of one
monitor well. A site map is provided as Figure 2 and a photographic log of the site and surroundings is provided
as Appendix III.
4.1 UST Owner and Operator Information
The former owner/operator of the UST system was Glen Mann (deceased in 1992), who operated the UST system
from an unknown date until 1966, when the gas station closed and the fuel pumps were removed. The UST system
remained under Mr. Mann’s ownership until 1990 when the system was removed. Information pertaining to the
UST owner and operator information is presented in Table 1.
4.2 UST Information
One 2,000-gallon gasoline UST, two 1,000-gallon gasoline USTs, and one 550-gallon kerosene UST formerly
operated at the site until 1966. According to an Underground Storage Tank Closure Program report, dated January
3, 1991 prepared by ATEC Environmental Consultants, Inc. (ATEC), the four USTs were closed by removal on
December 19, 1990. Information about the UST is provided in Table 2, and the location of the former UST system
is shown in Figure 2.
4.3 Description of the UST Release
On December 19, 1990, ATEC removed the USTs from the property. At this time a release was discovered and
reported to the Raleigh Regional Office (RRO) of North Carolina Division of Environmental Management (NCDEM).
Upon removal of the UST system a film of free product was identified on top of the infiltrating groundwater.
Phase I Limited Site Assessment Report
Mann Store, Incident TF-6281, RA-940
7070 NC Highway 87
Pittsboro, Chatham County, North Carolina
S&ME Project No. 4305-18-110
March 8, 2019 6
Additionally, soil samples collected at this time were visibly discolored and emitted a strong petroleum odor.
Analysis of the soil samples confirmed that TPH concentrations were above the NCDEM action level.
4.4 Owners and Occupants of Adjoining/Nearby Properties and Land Use
There are six adjacent properties to the site. These properties are forested, residential, or farm land. Most homes
and structures in the vicinity are mobile home residences, the closest being approximately 50 feet south of the
site. Information regarding adjacent properties is presented in Table 3 and are shown in Figure 3.

5.0 Site Reconnaissance and Receptor Information
On May 25, 2018, S&ME personnel completed a receptor survey in general accordance with the NCDEQ Guidelines
for Assessment and Corrective Action, August 2012. The Limited Site Assessment Risk Classification and Land Use
Form is included in Appendix IV. Information pertaining to the identified receptors is summarized below. Figure
3 shows the locations of the adjacent property owners and identified water supply wells.
5.1 Water Supply Wells
Letters requesting water supply well information were mailed to eight addresses located within 1,000 feet of the
subject site. To date, one property owner has responded. Nine water supply wells have been visually identified. Of
those nine, one well has been identified not in use. The list of identified water supply wells in the area is included
as Table 4.
5.2 Public Water Supplies
According to the Chatham County Public Utilities Department, municipal water service is not available for the area
surrounding the site. Potable water at the site and surrounding area is supplied through private drinking water
wells.
5.3 Surface Water
According to the National Wetlands Inventory online Wetlands Mapper, one freshwater farm pond is located
approximately 525 feet to the northwest of the source area. Additionally, two streams were identified within 1,500
feet of the subject site; one located approximately 1,000 feet northeast, and the other located approximately 1,500
feet south. These surface water features and potential receptors are included on Table 4.
5.4 Wellhead Protection Areas
S&ME personnel accessed the web application viewer of wellhead protection areas on May 31, 2018. According
to the online database, the site and surrounding area is not located within a designated wellhead protection area.
5.5 Subsurface Structures
During the site reconnaissance, several underground utilities were identified on the subject property.
Underground utilities have the potential to act as subsurface pathways for contamination. No other subsurface
structures such as vaults, basements, or storm drain features were identified during the receptor survey.
Phase I Limited Site Assessment Report
Mann Store, Incident TF-6281, RA-940
7070 NC Highway 87
Pittsboro, Chatham County, North Carolina
S&ME Project No. 4305-18-110
March 8, 2019 7
5.6 Risk Classification
Based on the presence of a water supply wells located within 1,000 feet of the subject property and the detection
of constituents above their 2L Standard the site remains as a “High” risk site.
6.0 Soil and Groundwater Sampling
Field activities were performed under a site-specific health and safety plan prepared by S&ME. The project was
performed in general accordance with the procedures outlined in the approved task authorization TA-01 dated
April 23, 2018. The investigative derived waste, such as soil cuttings, decontamination water, and purge water that
were generated during the field activities were spread on the ground at the site.
6.1 Monitor Well Installation and Soil Sampling
On May 24, 2018, S&ME personnel mobilized to the site to install a groundwater monitoring well (MW-1). The
soil boring for the monitor well was advanced using a Geoprobe 7730 DT with the ability to turn 4.25 inch outside
diameter hollow-stem augers. Macro core refusal was encountered 7-feet below ground surface, at this depth
S&ME personnel switched to the air rotary method to advance the well to the final depth of 50-feet below ground
surface (ft-bgs). The monitor well (MW-1) was advanced approximately 25-feet south of the onsite building near
the front entrance. Figure 2 represents the location of the monitor well. The boring log used to document
observations in the field is included in Appendix V. The soil boring was converted into a groundwater monitoring
well (MW-1) by installing a 20-foot long section of two-inch diameter polyvinyl chloride (PVC) 0.010-inch slotted
screen, attached to a 30-foot long riser pipe to bring the well to ground surface. The well was completed by
placing #2 type filter sand in the boring annulus to approximately two feet above the screen section (sand pack).
Approximately two feet of hydrated bentonite was placed above the sand pack, and neat cement grout was then
placed from the top of the bentonite to approximately six inches below ground surface. The monitor well was
completed at the ground surface and is encased with a flush-mounted protective steel casing and a bolted
manhole cover. The monitor well construction record is included in Appendix V and the monitor well
construction details are summarized in Table 5.

During the advancement of the soil boring for MW-1 a soil sample was collected from the interval between 0 and 5.0
feet below ground surface (MW-1 (0-5’)) and another sample was collected from the interval between 5.0 feet and 7.0
feet below ground surface (MW-1 (5-7’)). The soil samples were classified on-site by S&ME personnel and screened
with a photo-ionization detector (PID) to measure relative headspace concentrations of VOCs. The maximum PID
reading during the advancement of the soil boring for MW-1 was 2.8 ppm at an approximate depth of six feet
below ground surface.
The composite soil sample (SS-1) was placed directly into a laboratory-supplied container and stored in an
insulated container with ice. The sample was shipped under standard chain-of-custody procedure to Con-Test
Analytical Laboratories (Con-Test) of East Longmeadow, Massachusetts, a North Carolina certified laboratory, for
analysis of VOCs by EPA Method 8260B and for VPH by the MADEP Method.
Phase I Limited Site Assessment Report
Mann Store, Incident TF-6281, RA-940
7070 NC Highway 87
Pittsboro, Chatham County, North Carolina
S&ME Project No. 4305-18-110
March 8, 2019 8
6.2 Groundwater Sampling
On May 25, 2018, S&ME personnel measured depth to groundwater in MW-1. The depth to groundwater was
measured using an electronic water level indicator, which emits an audible tone when in contact with water. The
depth to groundwater was measured at 34.43-feet below the top of casing in MW-1. The depth to water
measurement and monitor well construction data is provided in Table 5.

After collecting the depth to groundwater measurement, S&ME personnel purged and sampled MW-1 using a
new, disposable polyethylene bailer. The well was bailed dry after removing approximately four gallons, and was
allowed to recover before sampling. Field parameters consisting of temperature, pH, and conductivity were
recorded for each casing volume. The groundwater samples were placed in laboratory-supplied containers, placed
in a cooler on ice, and shipped under standard chain-of-custody procedure to Con-Test for analysis for VOCs by
EPA Method 6200B, and for VPH by the MADEP Method.
6.3 Water Supply Well Sampling
A sample was also collected from WSW-8, located approximately 50 feet to the south of the former UST system
bed. The sample was taken from the spigot of the home associated with WSW-8. The spigot was purged for
approximately five minutes at a rate of seven gallons per minute before parameters were taken. Field parameters
consisting of temperature, pH, and conductivity were then recorded at five minute intervals. The water supply well
samples were placed in laboratory-supplied containers, placed in a cooler on ice, and shipped under standard
chain-of-custody procedure to Con-Test for analysis for VOCs by EPA Method 6200B.
Copies of the well sampling forms are provided in Appendix V. The chain-of-custody form can be found in
Appendix VI.
6.4 Summary of Soil Analytical Results
The laboratory analytical results of the composite soil sample (SS-1) collected on May 24, 2018 indicated that no
target contaminant constituents were reported above the laboratory’s method detection limits. A summary of the
laboratory analytical results for the soil samples is presented in Table 6, and shown on Figure 4. The laboratory
analytical report for the soil samples is included in Appendix VI.
6.5 Summary of Groundwater Analytical Results
The laboratory analytical result of the groundwater sample collected from monitor well MW-1 indicated that
benzene, methyl tert-butyl ether, and naphthalene were detected above their respective 2L Standards. In addition,
carbon fractions C5-C8 Aliphatics, C9-C12 Aliphatics, and C9-C10 Aromatics were detected above the regulatory
limit. Several VOCs were reported at concentrations above their respective laboratory analytical method detection
limits, but below their respective 2L Standards.

Phase I Limited Site Assessment Report
Mann Store, Incident TF-6281, RA-940
7070 NC Highway 87
Pittsboro, Chatham County, North Carolina
S&ME Project No. 4305-18-110
March 8, 2019 9
6.6 Summary of Water Supply Well Analytical Results

The laboratory analytical results collected from WSW-8 indicated that benzene was detected above the 2L
Standard. Several additional constituents were detected below their respective 2L Standards.

No free product was measured during this sampling event. Upon receiving the laboratory analytical results, Ms.
Linda Blalock was sent the laboratory analytical report via email on June 7, 2018. A summary of the groundwater
analytical results from monitor well MW-1 is presented in Table 7 and the summary of historical and current
contaminants in water supply wells are presented in Table 8. Laboratory analytical results are shown in Figure 4,
and a copy of the laboratory analytical report is provided in Appendix VI.
6.7 Regional and Site Geology and Hydrogeology
6.7.1 Soil and Bedrock
Soils encountered at the site during the advancement of the groundwater monitor well by S&ME primarily
consisted of silty sands. Partially weathered rock was encountered at approximately 19 feet. Bedrock consisting of
siltstone was encountered at approximately 21 feet with possible fractures at 42 to 50 feet.

According to the Geologic Map of North Carolina, dated 1985, the site lies within Carolina Slate Belt, mostly
comprised of metamorphic rock. This formation is categorized as metamudstone and meta-argillite with a thin to
thick bedding, axial-planar cleavage is common.
6.7.2 Hydrogeology
The depth to groundwater measurement collected on May 25, 2018 measured 34.43 feet below top of casing (ft-
BTOC). Due to the limitation of one monitor well, the groundwater flow direction could not be determined.
However based on previous reports and land elevations in the area it is estimated groundwater flows to the
northeast.
6.8 Evaluation of Soil and Groundwater Information
6.8.1 Current Extent and Severity of Contamination
During the installation of monitor well MW-1 on May 24, 2018 a composite soil sample was collected. Laboratory
analytical results show no contaminants were detected above detection limits.

No free product was detected in the monitor well sampled. Several petroleum and gasoline constituents were
detected above their reporting limits in monitor well MW-1 and water supply well WSW-8 during the sampling
event on May 25, 2018. Benzene in monitor well MW-1 and water supply well WSW-8 was detected above the 2L
Standard. Additionally, methyl tert-butyl ether, and naphthalene were detected in MW-1 above their respective 2L
Standards.

Phase I Limited Site Assessment Report
Mann Store, Incident TF-6281, RA-940
7070 NC Highway 87
Pittsboro, Chatham County, North Carolina
S&ME Project No. 4305-18-110
March 8, 2019 10
According to previous reports, constituents found in water supply well WSW-8, do not seem to be decreasing at a
consistent rate. Benzene, methyl tert-butyl ether, and diisopropyl ether have decreased since the previous
sampling event on January 3, 2006. However, many other constituents which had not previously been detected
reported above their detection limits during the sampling event on May 25, 2018. The extent of the contaminated
groundwater has not been determined.
6.8.2 Cleanup Levels Achieved
 Soil (soil-to-groundwater maximum soil contaminant concentrations) Yes
 Groundwater (2L standard concentrations) No
 Free Product - Free product has not been measured at the site. Yes

7.0 Conclusion and Recommendations
Based on the current and historical assessment information for the site, the following conclusions are presented:

1. The laboratory analytical results of soil sample collected on May 24, 2018 indicated that no target
contaminant constituents were reported above the laboratory’s method detection limits.
2. The laboratory analytical results of the groundwater sample collected on May 25, 2018 from monitor well
MW-1 indicated that benzene, naphthalene, and methyl tert-butyl ether were detected above their
respective 2L Standards. There were no detections above the gross contamination levels (GCLs).
3. Water supply well WSW-8 also had laboratory results indicated levels of benzene above the 2L Standard
but below the Federal Drinking Water Standard of 5 µg/L.
4. During the receptor survey and from responses received from a well survey, eight water supply wells were
identified within 1,000 feet of the site. It should be assumed that each property with a residence has a
water supply well. Municipal water service is not available to the surrounding area.
5. S&ME was unable to install additional monitor wells due to shallow bed rock, and unable to gain access
permission to remaining adjacent properties.

Based on the above, the following recommendations are presented:

1. Obtain access agreements to sample the water supply wells on properties within 1,000 feet of the site.
2. Continue periodic sampling of monitor well MW-1 and install additional monitor wells to determine
groundwater flow direction and delineate the extent of contamination.

Appendices

Appendix I – Figures

SCALE:
DATE:
PROJECT NUMBER
FIGURE NO.
11 " = 2,000 '
6-5-18
4305-18-110
MANN STORE (TF - 6281)7070 NC HIGHWAY 87PITTSBORO, CHATHAM COUNTY, NORTH CAROLINADrawing Path: Q:\PROJECTS\2018\4305-18-110 Mann Store\VicinityMapFIG1.mxd plotted by mverbanic 06-05-20180 2,000 4,000(FEET)
VICINITY MAP
³
REFERENCE:GIS BASE LAYERS WERE OBTAINED FROM THE 2018 ESRI USGS NATIONAL TOPO BASEMAP.THIS MAP IS FOR INFORMATIONAL PURPOSES ONLY. ALL FEATURE LOCATIONS DISPLAYEDARE APPROXIMATED. THEY ARE NOT BASED ON CIVIL SURVEY INFORMATION, UNLESSSTATED OTHERWISE.
SITE LOCATION
!>
!<
!<WATER SUPPLY WELL
SITE LOCATION
!>MONITOR WELL
SCALE:
DATE:
PROJECT NUMBER
FIGURE NO.
21 " = 100 '
6-8-18
4305-18-110
MANN STORE (TF - 6281)7070 NC HIGHWAY 87PITTSBORO, CHATHAM COUNTY, NORTH CAROLINADrawing Path: Q:\PROJECTS\2018\4305-18-110 Mann Store\SiteMapFIG2.mxd plotted by mverbanic 06-08-20180 100 200(FEET)
SITE MAP
³
REFERENCE:GIS BASE LAYERS WERE OBTAINED FROM 2017 NCONEMAP ORTHOIMAGERY LAYER. THISMAP IS FOR INFORMATIONAL PURPOSES ONLY. ALL FEATURE LOCATIONS DISPLAYED AREAPPROXIMATED. THEY ARE NOT BASED ON CIVIL SURVEY INFORMATION, UNLESS STATEDOTHERWISE.
WSW-8
MW-1
FORMER PUMP ISLAND
FORMER UST SYSTEM PIT
!>!<
!<
!<
!<
!<
!<
!<
!<
!<
FARM POND
FARM POND
RIVERINE
PIEDMONT FARM ANIMAL REFUGE
LONG BRANCH STREAM
4
SITE
2
3
5
16
WSW-8
WSW-3
WSW-2
WSW-1B(INACTIVE)
WSW-1
WSW-6
WSW-7
WSW-4
WSW-5
!<APPROX. LOCATION OF WATER SUPPLY WELL
!>MONITOR WELL
STREAMSITE RECONNAISSANCE BOUNDARYSITE LOCATION
Parcels
SCALE:
DATE:
PROJECT NUMBER
FIGURE NO.
31 " = 375 '
6-15-18
4305-18-110
MANN STORE (TF - 6287)7070 NC HIGHWAY 87PITTSBORO, CHATHAM COUNTY, NORTH CAROLINADrawing Path: Q:\PROJECTS\2018\4305-18-110 Mann Store\ReceptorMapFIG3.mxd plotted by mverbanic 06-15-20180 500 1,000(FEET)
RECEPTOR SURVEY
³
REFERENCE:GIS BASE LAYERS WERE OBTAINED FROM 2017 NCONEMAP ORTHOIMAGERY LAYER. THISMAP IS FOR INFORMATIONAL PURPOSES ONLY. ALL FEATURE LOCATIONS DISPLAYED AREAPPROXIMATED. THEY ARE NOT BASED ON CIVIL SURVEY INFORMATION, UNLESS STATEDOTHERWISE.SITE RECONNAISSANCE CONDUCTED ON MAY 25, 20181- INDICATES ADJACENT PROPERTY: REFER TO TABLE 6 FOR PROPERY INFORMATION
1,000 FEET
!>
!<
!<
!<SITE LOCATION
!>MONITOR WELL
!<WATER SUPPLY WELL
SCALE:
DATE:
PROJECT NUMBER
FIGURE NO.
41 " = 100 '
6-15-18
4305-18-110
MANN STORE (TF - 6281)7070 NC HIGHWAY 87PITTSBORO, CHATHAM COUNTY, NORTH CAROLINADrawing Path: Q:\PROJECTS\2018\4305-18-110 Mann Store\GroundwaterConstituentMapFIG4.mxd plotted by mverbanic 06-15-20180 100 200(FEET)
GROUNDWATER AND SOIL CONSTITUENT MAP
³
REFERENCE:GIS BASE LAYERS WERE OBTAINED FROM 2017 NCONEMAP ORTHOIMAGERY LAYER. THISMAP IS FOR INFORMATIONAL PURPOSES ONLY. ALL FEATURE LOCATIONS DISPLAYED AREAPPROXIMATED. THEY ARE NOT BASED ON CIVIL SURVEY INFORMATION, UNLESS STATEDOTHERWISE.
SOIL SAMPLE COLLECTED MAY 24, 2018GROUNDWATER SAMPLES COLLECTED MAY 25, 2018µg/L: MICROGRAMS PER LITERmg/Kg: MILLIGRAM PER KILOGRAMBDL: BELOW DETECTION LIMITJ: CONCENTRATION DETECTED BELOW REPORTING LIMIT BUT ABOVE 2L STANDARD,RESULTING IN AN ESTIMATIONBOLDINDICATES CONCENTRATION EXCEEDS 2L STANDARDS
MW-1GROUNDWATER µg/L BENZENE 63N-BUTYLBENZENE 4.2SEC-BUTYLBENZENE 3.5TERT-BUTYLBENZENE 0.35 JDIISOPROPYL ETHER 52ETHYLBENZENE 52ISOPROPYLBENZENE 12P-ISOPROPYLTOLUENE 0.84METHYL TERT-BUTYL ETHER 35NAPHTHALENE 29N-PROPYLBENZENE 21TOLUENE 1.91,2,4-TRIMETHYLBENZENE 421,3,5-TRIMETHYLBENZENE 7.5TOTAL XYLENES 35.8
WSW-8GROUNDWATER µg/L BENZENE 3.9DIISOPROPYL ETHER 6.9ISOPROPYLBENZENE 0.19 JMETHYL TERT-BUTYL ETHER 3.8N-PROPYLBENZENE 0.18 JSTYRENE 0.25 J1,2,4-TRIMETHYLBENZENE 0.55TOTAL XYLENES 1.2
FORMER UST SYSTEM PIT
FORMER PUMP ISLAND
MW-1SOIL (0'-7') mg/Kg BDL

Appendix II – Tables

TABLE 1
SITE HISTORY - UST/AST OWNER INFORMATION
Mann Store (Incident No. 6281, UST No. RA-940)
7070 NC Highway 87, Pittsboro, Chatham County, North Carolina
S&ME Project # 4305-18-110
1 through 4 Glen and Muriel Mann Prior to 1966 - 2007 6281 Both
N/A - Deceased N/A - Deceased
Incident
Number
Owner or
Operator?
Address Telephone Number
UST ID
Numbers
Name of Owner and
Operator
Dates of Ownership /
Operation
TABLE 2
SITE HISTORY - UST SYSTEM INFORMATION
Mann Store (Incident No. 6281, UST No. RA-940)
7070 NC Highway 87, Pittsboro, Chatham County, North Carolina
S&ME Project # 4305-18-110
UST
ID Number
Current
Contents
Previous
Contents
Capacity
(gallons)
Construction
Details
Tank
Dimensions
D/L (ft)
Description of
Associated Piping
and Pumps
Date USTs
Installed Status of UST ***
Was Release
Associated With
UST System?
1 None Gasoline 1,000 Steel Unknown Removed 1966 Closed by Removal 1990
2 None Gasoline 2,000 Steel Unknown Removed 1966 Closed by Removal 1990
3 None Gasoline 1,000 Steel Unknown Removed 1966 Closed by Removal 1990
4 None Kerosene 550 Steel Unknown Removed 1966 Closed by Removal 1990
Incident
Number
Material
Released
Date of
Release Description of Release
6281 Gasoline Uknown
UST Details from Underground Storage Tank Closure Program , dated January 3, 1991 by ATEC Environmental Consultants.
Soil contamination discovered at time of UST closures by removal.
YesUnknown
TABLE 3
PROPERTY OWNERS/OCCUPANTS
Mann Store (Incident No. 6281, UST No. RA-940)
7070 NC Highway 87, Pittsboro, Chatham County, North Carolina
S&ME Project # 4305-18-110
Street/PO Box City State Zip
Site Glenette & Ronald Vaughn 8847 NC Highway 87 N Pittsboro NC 27312
1 Glenette & Ronald Vaughn 8847 NC Highway 87 N Pittsboro NC 27312
2 Susan Johnson 7192 NC Highway 87 N Pittsboro NC 27312
3 Christopher Campbell 635 Sheep Rock Road Snow Camp NC 27349
4 Irene Morris 713 Pittsboro-Goldston Road Pittsboro NC 27312
5 John & Tammy Flynn 633 Chapel Ridge Drive Pittsboro NC 27312
6 Lauraine Rivier 180 Castle Rock Farm Road Pittsboro NC 27312
Notes:Information on property ownership was obtained from Chatham County GIS Website June 2018.
Owner/Occupant Mailing AddressParcel # or
Map ID Owner/Occupant Name
TABLE 4
PUBLIC AND PRIVATE WATER SUPPLY WELL INFORMATION
Mann Store (Incident No. 6281, UST No. RA-940)
7070 NC Highway 87, Pittsboro, Chatham County, North Carolina
S&ME Project # 4305-18-110
Well #Well Owner / User
(indicate which)Site Address Phone
Number
Latitude
(decimal)
Longitude
(decimal)Well Use
Well
Depth
(ft-BGS)
Type
of Well
Well
Casing
Depth
(ft-BGS)
Distance (ft) /
Direction from
Source
Gradient
from
Source
(Up or Down)
WSW-1 Lauraine Rivier 180 Castle Rock Farm Road Not Provided 35.805287 -79.253116 Drinking Unknown Unknown Unknown 900'NW Lower
WSW-1B Lauraine Rivier 180 Castle Rock Farm Road Not Provided 35.804527 -79.251304 Inactive Unknown Unknown Unknown 350'NW Lower
WSW-2 Michael & Sharon Owens 7239 NC Highway 87 Not Provided 35.806471 -79.252033 Drinking Unknown Unknown Unknown 1,000'NW Lower
WSW-3 Jean and Donald Stubbs 7267 NC Highway 87 Not Provided Unknown Unknown Drinking Unknown Unknown Unknown 1,250'NNW Lower
WSW-4 Piedmont Farm Animal Refuge 7236 NC Highway 87 919-533-4013 35.806554 -79.250563 Drinking Unknown Unknown Unknown 975'N Lower
WSW-5 Susan Johnson 7192 NC Highway 87 Not Provided Unknown Unknown Drinking Unknown Unknown Unknown 1,000'NE Lower
WSW-6 Sandra Fogleman 6989 NC Highway 87 Not Provided 35.802996 -79.251504 Drinking Unknown Unknown Unknown 475'SW Higher
WSW-7 Sandra Fogleman 6941 NC Highway 87 Not Provided 35.802239 -79.251021 Drinking Unknown Unknown Unknown 650'SSW Higher
WSW-8 Irene and Clarence Morris 7042 NC Highway 87 Not Provided 35.803843 -79.250551 Drinking Unknown Unknown Unknown 50' S Higher
Other Receptors
(Other public water supplies, reservoirs, supply lines, surface water bodies, wellhead protection areas, recharge areas for deep aquifers, subsurface structures)
Receptor
ID Description Location Latitude
(decimal)
Longitude
(decimal)
Phone
Number
Distance (ft) /
Direction from
Source
Gradient
from
Source
(Up or Down)
P1 Farm Pond 180 Castle Rock Farm Road 35.805393 -79.251711 Uknown 525' NW Lower
S1 Long Brand Stream South of the Subject Propery 35.799971 -79.249842 Uknown 1,450' S Higher
S2 Intermittened Stream North of the Subject Propery 35.806944 -79.249166 Uknown 1,000' NE Lower
Notes:Latitude and Longitude coordinates of water supply wells are estimated values
Only confirmed water supply wells are shown. It should be assumed that each property with a residence has a water supply well as municipal water is not available to the surrounding area.
Water Supply well information obtained from responses of property owners as indicated on the letters received back from the well survey
Other receptors identified using the National Wetlands Inventory online Wetlands Mapper system.
Groundwater flow direction has been estimated based on previous reports and land elevations collected from Google Earth
Usage
Farm Pond
Uknown Surface Water Body
Uknown Surface Water Body
Contact
Lauaine Rivier
Well ID Date Installed
Total Well
Depth
(ft-BTOC)
Screened
Interval
(ft-bgs)
Date
Measured
Top of Casing
Elevation
(ft-rel)
Depth to Water
(ft-BTOC)
Free Product
Thickness
(ft)
Groundwater
Elevation
(ft-rel)
MW-1 5/24/2018 50 30-50 5/25/2018 NM 34.43 NM NM
NOTES:Two-inch diameter PVC well materials were installed.
ft-BGS = Feet Below Ground Surface
NM = Not Measured
BTOC = Below Top of Casing
WELL CONSTRUCTION AND LIQUID LEVEL DATA
TABLE 5
Mann Store (Incident No. 6281, UST No. RA-940)
7070 NC Highway 87, Pittsboro, Chatham County, North Carolina
S&ME Project # 4305-18-110
Page 1 of 1
VOCs by EPA Method
8260B (mg/kg)VPH by MADEP (mg/kg)
Contaminants of Concern Contaminants of Concern
SS-1 5/24/2018 0-7 BDL BDL
NOTES:
Analytes that are not shown for the method were not detected
ft-BGS: Feet below ground surface
VOCs: Volatile Organic Compounds
VPH: Volatile Petroleum Hydrocarbons
Results reported in milligrams per kilogram (mg/kg)
BDL: Below Detection Limit
MSCC: Maximum soil contamination concentration
Constituent Specific Constituent Specific
Soil-to-Groundwater MSCC
Residential MSCC
Industrial/Commerical MSCC
Sample ID
Date
Collected
Sample
Depth
(ft-BGS)
TABLE 6
SUMMARY OF SOIL SAMPLING RESULTS
Mann Store (Incident No. 6281, UST No. RA-940)
7070 NC Highway 87, Pittsboro, Chatham County, North Carolina
S&ME Project # 4305-18-110
Well
ID
Date
Collected
tert-ButylbenzeneDiisopropyl Ether (DIPE)p-IsopropyltolueneMW-1 5/25/2018 63 4.2 3.5 0.35 J 52 52 12 0.84 35 29 21 1.9 42 7.5 35.8 770 360 550
1 70 70 70 70 600 70 25 20 6 70 600 400 400 500 400 200 700
5,000 6,900 8,500 15,000 70,000 84,500 25,000 11,700 20,000 6,000 30,000 260,000 28,500 25,000 85,500 NE NE NE
Notes:
Analytes that are not shown for the method were not detected.
Concentrations are reported in micrograms per liter (µg/L).
VPH: Volitile Petrolium Hydrocarbons
MADEP: Massachusetts Department of Environmental Protection
J: Indicates detection above the method detection limit, but below the reporting limit; therefore, result is an estimated concentration
2L Standard: North Carolina Groundwater Quality Standards: 15A NCAC 2L.0202
Concentrations exceeding the 2L Standards are shown in Shaded and BOLD fields.
Concentrations exceeding the laboratory's reporting limits are shown in BOLD fields.
GCL - Gross Contaminantion Level
BDL - Not detected in concentrations exceeding laboratory detection limits
NE: Regulatory standard not established for analyte n-ButylbenzeneMADEP VPH (µg/L)C5-C8 AliphaticsC9-C10 AromaticsC9-C12 Aliphatics 2L Standard
GCL
Analytical Method →
Contaminant of Concern →
Volatile Organic Compounds (VOCs) EPA Method 6200B (µg/L)TolueneBenzeneTotal XylenesMethyl tert-butyl etherNaphthaleneIsopropylbenzene1,2,4-Trimethylbenzene1,3,5-Trimethylbenzenen-PropylbenzeneEthylbenzenesec-ButylbenzeneTABLE 7
SUMMARY OF GROUNDWATER SAMPLING RESULTS
Mann Store (Incident No. 6281, UST No. RA-940)
7070 NC Highway 87, Pittsboro, Chatham County, North Carolina
S&ME Project # 4305-18-110
Page 1 of 1
Well
ID
Date
Collected
EthylbenzeneDiisopropyl Ether (DIPE)Styrene1,2 DichloroethaneLead12/15/2004 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1.3 J
1/3/2006 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 18
5/25/2018
12/15/2004 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1.3 J
1/3/2006 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL
5/25/2018
12/15/2004 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 15
5/25/2018
12/15/2004 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 3.0 J
1/3/2006 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL
5/25/2018
7/21/1998 34.5 4.9 3.8 BDL BDL BDL BDL BDL BDL 2.0 NA
4/27/2000 4.5 BDL BDL BDL 5.6 BDL BDL 0.6 BDL BDL NA
12/15/2004 5.9 BDL 13 BDL 6.2 BDL BDL BDL BDL BDL 2.0 J
1/3/2006 4.4 BDL 13 BDL 4.6 BDL BDL BDL BDL BDL BDL
5/25/2018 3.9 BDL 6.9 0.19 J 3.8 0.18 J 0.25 J BDL 0.55 1.2 NA
12/15/2004 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 140
5/25/2018
1 600 70 70 20 70 70 0.4 400 500 15
5,000 84,500 70,000 25,000 20,000 30,000 70,000 400 28,500 85,500 15,000
Notes:
Analytes that are not shown for the method were not detected.
Concentrations are reported in micrograms per liter (µg/L).
J: Indicates detection above the method detection limit, but below the reporting limit; therefore, result is an estimated concentration
2L Standard: North Carolina Groundwater Quality Standards: 15A NCAC 2L.0202
Concentrations exceeding the 2L Standards are shown in Shaded and BOLD fields.
Concentrations exceeding the laboratory's reporting limits are shown in BOLD fields.
NA: Analysis for sample not requested.
GCL - Gross Contaminantion Level
BDL - Not detected in concentrations exceeding laboratory detection limits
2L Standard
GCL Methyl tert-butyl ethern-Propylbenzene1,2,4-TrimethylbenzeneContaminant of Concern →BenzeneIsopropylbenzeneWSW1-B Destoryed
WSW-7
Not Sampled Total XylenesWSW-8
WSW-4
WSW-5
Not Sampled
Not Sampled
Not Sampled
7070 NC Highway 87, Pittsboro, Chatham County, North Carolina
Mann Store (Incident No. 6281, UST No. RA-940)
SUMMARY OF WATER SUPPLY WELL SAMPLING RESULTS
TABLE 8
WSW-1
Analytical Method →Volatile Organic Compounds (VOCs) EPA Method 6200B (µg/L)
S&ME Project # 4305-18-110

Appendix III – Photographic Log

Phase I Limited Site Assessment Report
Mann Store, Incident TF-6281, RA-940
7070 NC Highway 87
Pittsboro, Chatham County, North Carolina
S&ME Project No. 4305-18-110

Date: 5/24/2018 Photographer: Jim Peele
Location / Orientation Front of Subject Property
Remarks Former Pump Island

Date: 5/24/2018 Photographer: Jim Peele
Location / Orientation North Side of Property Oriented SW
Remarks Large Shipping Container On Property
Phase I Limited Site Assessment Report
Mann Store, Incident TF-6281, RA-940
7070 NC Highway 87
Pittsboro, Chatham County, North Carolina
S&ME Project No. 4305-18-110

Date: 5/24/2018 Photographer: Jim Peele
Location / Orientation East Side of Subject Property, Oriented NE
Remarks Above-Ground Storage Tank

Date: 5/24/2018 Photographer: Jim Peele
Location / Orientation Back of Property oriented NW
Remarks Shed and AST on site
Phase I Limited Site Assessment Report
Mann Store, Incident TF-6281, RA-940
7070 NC Highway 87
Pittsboro, Chatham County, North Carolina
S&ME Project No. 4305-18-110

Date: 5/24/2018 Photographer: Jim Peele Location / Orientation MW-1 South
Remarks MW-1 Installation

Date: 5/24/2018 Photographer: Jim Peele Location / Orientation MW-1
Remarks Fragments from MW-1 Installation

Phase I Limited Site Assessment Report
Mann Store, Incident TF-6281, RA-940
7070 NC Highway 87
Pittsboro, Chatham County, North Carolina
S&ME Project No. 4305-18-110

Date: 5/24/2018 Photographer: Jim Peele
Location / Orientation Adjacent Property SW
Remarks Water Supply Well 8 and spigot sample was
collected from

Date: 5/24/2018 Photographer: Jim Peele
Location / Orientation Water Supply Well 8
Remarks Sample collected from spigot attached to
mobile home

Appendix IV – Limited Site Assessment Risk Classification and
Land Use Form

Phase I Limited Site Assessment Report
Mann Store, Incident TF-6281, RA-940
7070 NC Highway 87
Pittsboro, Chatham County, North Carolina
S&ME Project No. 4305-18-110

Limited Site Assessment Risk Classification and Land Use Form
Part I – Groundwater/Surface Water/Vapor Impacts
High Risk
1. Has the release contaminated any water supply well including any well used for non-drinking purposes?YES/NO
2. Is a water supply well used for drinking water located within 1,000 feet of the source area of the release?YES/NO
3. Is a water supply well not used for drinking water (e.g., irrigation, washing cars, industrial cooling water, filling
swimming pools) located within 250 feet of the source area of the release? YES/NO
4. Does groundwater within 500 feet of the source area of the release have the potential for future use (there is no other
source of water supply other than the groundwater)? YES/NO
5. Do vapors from the release pose a threat of explosion because of accumulation of the vapors in a confined space or
pose any other serious threat to public health, public safety or the environment? YES/NO
If yes, describe.
___N/A_____________________________________________________________________________________________________________________
____________________________________________________________________________________________________________________________
6. Are there any other factors that would cause the release to pose an imminent danger to public health, public safety, or
the environment? YES/NO
If yes, describe.
____N/A____________________________________________________________________________________________________________________
____________________________________________________________________________________________________________________________

Intermediate Risk
7. Is a surface water body located within 500 feet of the source area of the release?
YES/NO
If YES, does the maximum groundwater contaminant concentration exceed the surface water quality standards and
criteria found in 15A NCAC 2B .0200 by a factor of 10? YES/NO
8. Is the source area of the release located within an approved or planned wellhead protection area as defined in 42 USC
300h-7(e)? YES/NO
If yes, describe.
__________N/A______________________________________________________________________________________________________________
____________________________________________________________________________________________________________________________
9. Is the release located in the Coastal Plain physiographic region as designated on a map entitled “Geology of North
Carolina” published by the Department in 1985? YES/NO
__Eastern Piedmont _______________________________________________________________________________________________________
_____________________________________________________________________________________________________________________________
If YES, is the source area of the release located in an area in which there is recharge to an unconfined or semi-
confined deeper aquifer that is being used or may be used as a source of drinking water? YES/NO
If YES, describe.
__N/A______________________________________________________________________________________________________________________
_____________________________________________________________________________________________________________________________
10. Do the levels of groundwater contamination for any contaminant exceed the gross contamination levels (See Table 4
and Table 5.) established by the Department? YES/NO

Part II - Land Use
Property Containing Source Area of Release
The questions below pertain to the property containing the source area of the release.
1. Does the property contain one or more primary or secondary residences (permanent or temporary)? YES/NO
Describe.
___N/A__________________________________________________________________________________________________________________
_________________________________________________________________________________________________________________________
Phase I Limited Site Assessment Report
Mann Store, Incident TF-6281, RA-940
7070 NC Highway 87
Pittsboro, Chatham County, North Carolina
S&ME Project No. 4305-18-110

2. Does the property contain a school, daycare center, hospital, playground, park, recreation area, church, nursing home,
or other place of public assembly? YES/NO
Describe.
______N/A______________________________________________________________________________________________________________
________________________________________________________________________________________________________________________
3. Does the property contain a commercial (e.g., retail, warehouse, office/business space, etc.) or industrial (e.g.,
manufacturing, utilities, industrial research and development, chemical/petroleum bulk storage, etc.) enterprise, an
inactive commercial or industrial enterprise, or is the land undeveloped? YES/NO
Describe. _
_Inactive Commercial, Former car repair, television repair shop, and gas station_____________________________________
________________________________________________________________________________________________________________________
4. Do children visit the property? YES/NO
Explain.
Unknown/ not likely_____________________________________________________________________________________________________

Is access to the property reliably restricted consistent with its use (e.g., by fences, security personnel or both)?
YES/NO
Explain.
___________N/A_____________________________________________________________________________________________________________
____________________________________________________________________________________________________________________________
5. Do pavement, buildings, or other structures cap the contaminated soil? YES/NO
Describe.
________________N/A________________________________________________________________________________________________________
If yes, what mechanisms are in place or can be put into place to ensure that the contaminated soil will remain capped
in the foreseeable future?
__________N/A______________________________________________________________________________________________________________
6. What is the zoning status of the property?
The site is zoned as Light Industrial according to Chatham County GIS Tax Map, the surrounding properties are______
Residential________________________________________________________________________________________________________________
____________________________________________________________________________________________________________________________
7. Is the use of the property likely to change in the next 20 years? YES/NO
Explain.
_____________Unknown______________________________________________________________________________________________________

Property Surrounding Source Area of Release
The questions below pertain to the area within 1,500 feet of the source area of the release (excludes property containing
source area of the release):

1. What is the distance from the source area of the release to the nearest primary or secondary residence (permanent or
temporary)? _Approximately 50 feet from the subject property line______________________________________________________
____________________________________________________________________________________________________________________________
2. What is the distance from the source area of the release to the nearest school, daycare center, hospital, playground,
park, recreation area, church, nursing home or other place of public assembly? ____Approximately 2,000 feet from
subject property line____________________________________________________________________________________________________
3. What is the zoning status of properties in the surrounding area?
Residential Agricultural____________________________________________________________________________________________________
_____________________________________________________________________________________________________________________________
4. Briefly characterize the use and activities of the land in the surrounding area.
_Rural Residential and Agricultural._______________________________________________________________________________________

Appendix V – Field Notes and Field Sampling Forms

Well ID
MW-1
S&ME Staff
J. Peele
Drill Rig
GeoProbe 7730DT
Water Level at TOB (0.01 ft-BTOC)Land Surface Elev. (0.01 ft)
TBD
Depth to Water (0.01 ft-BTOC)
Stickup Height - ft
TOC Relative to Ground 0.0 ft
0.0 to 30.0
30.0 to 50.0
Top of Seal - 26.0 0.1 ft-bgs
Top of Filter Pack - 28.0 0.1 ft-bgs
0.0 to 26.0
Top of Screen - 30.0 0.1 ft-bgs
26.0 to 28.0
Screened Interval -20.0 0.1 ft-bgs
28.0 to 50.0
Bottom of Screen - 50.0 0.1 ft-bgs
Bottom of Filter Pack - 50.0 0.1 ft-bgs
Cave In - 0.1 ft-bgs
Total Boring Depth - 50.0 0.1 ft-bgs
Form Revision Date:9/1/17 2:10 PM
TBD - To Be Determined
Notes:
Seal Interval (0.1 ft-bgs)
Filter Pack
Grout Interval (0.1 ft-bgs)
Development Volume (gal)
Development
No
For lithologic information
see attached boring log
BTOC - Below Top of Casing
Air Rotary
2' x 2' Concrete
Flush Vault (8" diam)
Seal Type
2-in Sch 40 PVC (0.010)
READY Mix
2-in Sch 40 PVC
Casing Interval (0.1 ft-bgs)
Screen Type
Borehole Diameter (1 in)
4
Filter Pack Interval (0.1 ft-bgs)
Screen Interval (0.1 ft-bgs)
Grout Type
#2 Silica Sand
3/8 in. Holeplug®
Pad Type
Protective Casing
Casing Material
Depth Below Ground Surface (ft-bgs)
Project Name
Mann's Store
Project Number
4305-18-110
WELL CONSTRUCTION DETAIL
50.0
Northing (0.1 ft)
TBD
Date/Time
Total Well Depth (0.1 ft-bgs)
TBD
S&ME
Easting (0.1 ft)Date/Time
Installation Date
5/25/2018
County
Drilling Contractor
Drilling Method
Well Type / Use
City
Flush Monitor Well
Chatham Pittsboro
License Number
2709
Well Permit Number
S&ME Project No. 4305-18-110
BORING DEPTH (FT):
WATER LEVEL:
CAVE-IN DEPTH:
LOGGED BY:
NORTHING:
EASTING:WATER LEVELSAMPLEPID READING (PPM)Sample Time / 1st 6in2nd 6in3rd 6inN VALUE2.4
2.8
DATE DRILLED:Thursday, May 24, 2018 50
DRILL RIG: Geoprobe 7730 DT
PROJECT:Mann's Store
BORING LOG: MW-1Pitts pro, NC
DEPTH(feet)GRAPHICLOGMATERIAL DESCRIPTION
LABORATORY ANALYSESFill, Silt, Soft, Brown, Orange, Tan, Fine, Some Clay and sand intermixed, Moist, Macro core refusal at
SAMPLING METHOD: Macro-Core Sampler
DRILLING METHOD: Hollow Stem Augers (4 1/4-in. ID)
DRILLER: S&ME, Inc.
HAMMER TYPE: Not Applicable J. Peele
5 Yes
Residuum, Silt, Firm, Light Brown, Brown, Low Moisture, Petroleum Odors
10
15
Partially Weathered Rock, Silt, Hard, Gray, Some Rock Fragments, Dry,
20
25
Rock, Siltstone, Gray, Dry. Possible fractures ~42-50,
30
S&ME Project No. 4305-18-110
BORING DEPTH (FT):
WATER LEVEL:
CAVE-IN DEPTH:
LOGGED BY:
NORTHING:
EASTING:WATER LEVELSAMPLEPID READING (PPM)Sample Time / 1st 6in2nd 6in3rd 6inN VALUEHAMMER TYPE: Not Applicable J. Peele
SAMPLING METHOD: Macro-Core Sampler
DRILL RIG: Geoprobe 7730 DT
DRILLER: S&ME, Inc.
PROJECT:Mann's Store
BORING LOG: MW-1Pitts pro, NC
DATE DRILLED:Thursday, May 24, 2018 50
DRILLING METHOD: Hollow Stem Augers (4 1/4-in. ID)DEPTH(feet)GRAPHICLOGMATERIAL DESCRIPTION
LABORATORY ANALYSES35
40
45
50 Boring Terminated at 50 Ft-BGS
55
60
Rock, Siltstone, Gray, Dry. Possible fractures ~42-50'
° F
Date Time
µS/cm
34.43 ft-TOC inch
50.00 ft-TOC gal
15.57 feet gal
20 ft-GRD gal
0 ft-GRD
12:57 End Time:
gal
Time pH Temp Cond Turbidity
(s.u.)(°C) µS/cm (NTU)
13:00 7.0 20.4 2,190
13:08 6.8 18.3 2,490
13:12 6.7 17.1 2,630
Qty Container Pres.Qty Pres.
(1)
Notes:
Form Revision Date:
16Purge Time (Min.):
GROUNDWATER SAMPLING FORM
Project Name:
Project Location:
Project Number:
Source Well:
Mann's Store
Pittsboro NC
4305-18-110
MW-1
Purge Date:May 25, 2018
Analytical Data
Method Method
9/1/17 12:10 PM
Name Signature Date
Container
Sample Method:Sample Time:Bailer
1.0
Total Volume Purged:4.0 Well Purged Dry?:No
Field Parameters
Cumulative Volume Comments
Purged dry at 4gal
2.5
4.0
(Gal)
Stickup Height:
Well Purging Information
Purge Method:Bailer Purge Start Time:13:13
Total Well Depth:Well Volume
Height of Water Column:3 * Well Volume
Screen Length:5 * Well Volume
2.5
7.6
12.7
Water Level & Well Data
Measuring Point:Top of Casing Well Volume
Depth to Water:Well Diameter
Conductivity µS/cm
2
Equipment Calibration Information:
Equipment Calibration Solution Calibration Check
pH 4.00, 7.00, 10.00
Air Temp:
May 25, 2018
Sample Time:
Sample Date:
Weather:
Locked?:
Sampled By:
Yes
J Peele
Sunny
Jim Peele 5/25/2018
4.01 7.00 10.02
μS/cm Units
°C mS/cm
Qty Pres.Qty Pres.
3 HCl
Date
Revision:
WATER SUPPLY WELL SAMPLING FORM
Owner Name:
Owner Phone No.:
5/25/2018
WSW-1
Mann's Store
Pittsboro, NC
4305-18-110
NCDEQ
Sunny
85
No
Client Name/Contact:
Project Name:
Project Location:
Project Number:Sample Date:
Weather:
Water Supply Well ID:
Container
40mL VOAs
Petroleum odor from water
4.00, 7.00, 10.00
7.00
15.00
28.00
Method
VOCs 8260
Method Container
Conductivity 5/25/18 11:20 1413
SignatureName
(2)
(1)
Purge Rate (GPM): 7.0 Purge Start Time:11:25
Volume Purged (Gal):-7,875.0 Purge End Time:
35.00
Sample ID
WSW-1
Sample Location
Spigot on Side of House
2.91
11:40 6.66
1,411
Well Purging Information
Field Parameters and Sampling
Conductivity
11:26 6.7 18.8 2.6
Air Temp (°F):
Equipment Calibration Information:
Equipment Time Calibration Solution Calibration Check
pH 5/25/18 11:20
POE Present (Y/N):
Total Volume (Gal)Time pH (s.u.)Temperature
Well Address:
17.8 2.96
11:45 6.68 17.8 2.89
9/1/17 13:30
Well / System Photographs
Date
Site Sketch
Additional Comments (description of location of sample port, water well, filters, etc.)
Sample Date Sample Time
11:31 6.6 17.7 2.84
5/25/2018 11:50
22.00 11:36 6.69 17.5
Jim Peele 5/25/2018

Appendix VI– Laboratory Analytical Reports and Chain of Custody
Forms

Page 1 of 40
Table of Contents
Table of Contents
Sample Summary 3
Hits Only Report 4
Case Narrative 5
Sample Results 7
18E1498-01 7
18E1498-02 11
18E1498-03 14
Sample Preparation Information 16
QC Data 17
Volatile Organic Compounds by GC/MS 17
B204551 17
B204720 21
B204809 25
Petroleum Hydrocarbons Analyses - VPH 30
B204406 30
B204608 31
Flag/Qualifier Summary 33
Certifications 34
Chain of Custody/Sample Receipt 38
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Run VPH on sample -02 per Mike P. -KKM 5/30/18Page 38 of 40
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