RA-613_3831_CA_MRP_20161213_ECS FINAL

December 13, 2016

Mr. Mark Petermann
NCDEQ, Division of Waste Management, UST Section
1637 Mail Service Center
Raleigh, North Carolina 27699-1637

Reference: Environmental Services Report – Mt. Harmony Grocery
1818 Mt. Harmony Church Road
Rougemont, Person County, North Carolina
NCDEQ Incident No: 3831
NCDEQ Contract No: N14007i-C
ECS Project No: 49:3051

Dear Mr. Petermann:

As authorized by your acceptance of ECS Carolinas, LLP (ECS) Task Authorization Request #1
(TAR #1) dated September 22, 2016, ECS has completed the Environmental Services Report for
the above-referenced site. Included in this report is a description of the field activities, the results
obtained, and our conclusions and recommendations. Information regarding the owner of the
underground storage tanks (USTs), current property owner, contacts, consultant, laboratory,
release information, and latitude and longitude are presented below.

ECS appreciates the opportunity to provide our environmental consulting services to you on this
project. If you have any questions concerning this report or this project, please contact us at (919)
861-9910.

Sincerely,

ECS CAROLINAS, LLP

Kevin Ferguson Matthew Gillis
Environmental Technician Environmental Project Manager
[e-mail] [e-mail]
919-861-9814 919-861-9845

John S. Lair, P.G.
Principal Geologist
[e-mail]
910-726-3035

Environmental Services Report – Mt. Harmony Grocery
1818 Mt. Harmony Church Road
Rougemont, Person County, North Carolina
NCDEQ Incident No: 3831
NCDEQ Contract No: N14007i-C
December 13, 2016

SITE INFORMATION

Date of Report: December 13, 2016

Facility I.D.: Unknown
UST Incident No.: 3831
Site Rank: High (H385D)
Land Use Category: Commercial

Site Name and Location: Mt. Harmony Grocery
1818 Mt. Harmony Church Road
Rougemont, Person County, North Carolina

Location Method: Google Earth
Latitude and Longitude: 36.317431° North, -78.863205°West
Contacts

Property Owner: Billy Barber
90 Fletcher Ridge Road
Timberlake, North Carolina 27583
Phone: [phone]

Consultant: ECS Carolinas, LLP
9001 Glenwood Avenue
Raleigh, North Carolina 27617
[phone]
Attn: Matthew Gillis

Laboratory: Prism Laboratories Inc.
449 Springbrook Road
P.O. Box 240543
Charlotte, North Carolina 28224
[phone]
NC Certification No. 402

Environmental Services Report – Mt. Harmony Grocery
1818 Mt. Harmony Church Road
Rougemont, Person County, North Carolina
NCDEQ Incident No: 3831
NCDEQ Contract No: N14007i-C
December 13, 2016

EXECUTIVE SUMMARY

The subject site is known as the Mt. Harmony Grocery site and is located at 1818 Mt. Harmony
Church Road in Rougemont, Person County, North Carolina. The subject site is further identified
by Person County Geographic Information Systems (GIS) Parcel Identification Number (PIN)
0943-00-04-1612.000.

On October 10, 2016, ECS collected groundwater samples from monitoring well MW-1 through
MW-4 and DW-1. The resident located on the subject site (1818 Mt. Harmony Church Road)
was not present at the residence at the time of sampling and ECS did not observe an exterior
spigot on the house; therefore, ECS did not sample water supply well PW-1. ECS observed
water supply wells PW-2 and PW-4. ECS did not observe water supply well PW-3. ECS did
not receive written permission to collect groundwater samples from these wells. Additionally
ECS performed a receptor survey to identify potable water supply wells located within 1,000
feet of the subject site. Based on the results of the assessment, ECS summarizes and
concludes the following:

 Laboratory analysis detected benzene at a concentration above its Gross Contamination
Level (GCL) in the groundwater sample collected from monitoring well MW-2. Laboratory
analysis detected several targeted analytes at concentrations above their respective North
Carolina 2L Groundwater Quality Standards (NC2LGWQS) but below their respective GCL
in the groundwater sample collected from monitoring well MW-2. Additionally, laboratory
analysis detected isopropylbenzene at a concentration above its laboratory reporting limit
but below its NC2LGWQS in the groundwater sample collected from monitoring well MW-
2.

 Laboratory analysis detected benzene and methyl-tert-butyl ether (MTBE) at
concentrations above their respective GCLs in the groundwater sample collected from
monitoring well MW-3. Laboratory analysis detected several targeted analytes at
concentrations above their respective NC2LGWQS but below their respective GCL in the
groundwater sample collected from monitoring well MW-3. Additionally, laboratory
analysis detected ethylbenzene at a concentration above its laboratory reporting limit but
below its NC2LGWQS in the groundwater sample collected from monitoring well MW-3.

 Laboratory analysis detected methyl butyl ketone at a concentration above its
NC2LGWQS but below its GCL in the groundwater sample collected from monitoring well
DW-1. Laboratory analysis detected isopropyl ether at a concentration above the
laboratory reporting limit but below its NC2LGWQS in the groundwater sample collected
from monitoring well DW-1.

 ECS identified eleven potable water supply wells located within 1,000 feet of the source
area;

 ECS received a returned water supply well letter from Mr. Billy Barber (1818 Mt. Harmony
Church Road; subject site) stating a water supply well (PW-1) is located on the site and
the well is currently active; however, ECS has not received additional water supply well
letters from the surrounding residences.
Environmental Services Report – Mt. Harmony Grocery
1818 Mt. Harmony Church Road
Rougemont, Person County, North Carolina
NCDEQ Incident No: 3831
NCDEQ Contract No: N14007i-C
December 13, 2016

 ECS observed the water supply wells PW-2 and PW-4. ECS did not observe water supply
well PW-3. ECS did not receive written permission to collect groundwater samples from
these wells.

 According to the City of Roxboro Public Services, municipal water is not connected, nor
available to the site or properties within 1,000 feet of the site.

 Based on the result of the risk characterization, the site meets criteria for High Risk
ranking.

Based on the results of this assessment, ECS recommends the following:

 Collecting soil samples for risk-based analysis along the sidewalls of the former UST
location to determine the extent of contaminated soils on the subject site. Each soil
sample will be collected at depths of five feet below the ground surface (ft bgs), ten ft
bgs, and 15 ft bgs.

 ECS recommends collecting groundwater samples from monitoring wells MW-1 through
MW-3, MW-UST, DW-1, the three newly installed monitoring wells, and water supply
wells PW-1, PW-2, PW-4, WSW-3, and WSW-4.

 Installing and sampling two additional monitoring wells downgradient of the source area
and one monitoring well located to the east of the subject site, across Mt. Harmony
Church Road to determine the extent of the contamination associated with the subject
site. ECS proposes one monitoring well installed in the NCDOT right-of-way of the
property located at 1850 Mt. Harmony Church Road and two monitoring wells installed in
the NCDOT right-of-way of the Mt. Tirzah Park located on Mt. Harmony Church Road.

 ECS recommends, upon the completion of the installation of the three additional
monitoring wells, surveying all monitoring wells associated with the site for top of casing
(TOC) elevation.

 ECS recommends that a copy of this report be submitted to the current property owner.

Environmental Services Report – Mt. Harmony Grocery
1818 Mt. Harmony Church Road
Rougemont, Person County, North Carolina
NCDEQ Incident No: 3831
NCDEQ Contract No: N14007i-C
December 13, 2016

TABLE OF CONTENTS
SITE HISTORY ............................................................................................................... 1
SITE GEOLOGY AND HYDROGEOLOGY..................................................................... 2
RECEPTOR INFORMATION .......................................................................................... 2
FIELD ACTIVITIES ......................................................................................................... 6
LABORATORY ANALYTICAL RESULTS ....................................................................... 7
CONCLUSIONS .............................................................................................................. 7
RECOMMENDATIONS ................................................................................................... 8

FIGURES

Figure 1 Site Location Map
Figure 2 Site Aerial Map
Figure 3 Monitoring Well Location Map
Figure 4 Water Supply Well Location Map
Figure 5 Adjacent Properties Map
Figure 6 Groundwater Concentration Map

TABLES

Table 1 UST Information
Table 2 Summary of Historical Soil Sample Analytical Results
Table 3 Water Supply Well Survey
Table 4 Adjacent Properties
Table 5 Summary of Historical Water Supply Well Analytical Results
Table 6 Well Construction and Groundwater Elevation Details
Table 7 Summary of Current Groundwater Analytical Results

APPENDICIES

Appendix A Water Supply Well Letters
Appendix B Site Photographs
Appendix C ECS Personnel Field Notes and Data Sheets
Appendix D Laboratory Analytical Data Sheets and Chain of Custody Records

Environmental Services Report – Mt. Harmony Grocery
1818 Mt. Harmony Church Road
Rougemont, Person County, North Carolina
NCDEQ Incident No: 3831
NCDEQ Contract No: N14007i-C
December 13, 2016
1

SITE HISTORY

The subject site is known as Mt. Harmony Grocery and is located 1818 Mt. Harmony Church
Road in Rougemont, Person County, North Carolina (Figures 1 and 2). According to information
provided to ECS by the North Carolina Department of Environment Quality (NCDEQ), the site
historically operated as a convenience store and gasoline station with two 1,000-gallon gasoline
USTs, which were removed from the site in March 1990 (Table 1).

In March of 1990, Groundwater Management Associates Inc. (GMA) conducted soil and
groundwater sampling at the site. GMA collected ten soil samples from the walls and floor of
the excavation after the removal of the two USTs. Composite soil samples from the walls (S1
through S5) were taken from depths of three to nine feet below ground surface (ft bgs). Grab
soil samples from the bottom of the excavation (S6 through S10) ranged from six to nine feet
bgs. Laboratory analysis detected total petroleum hydrocarbons gasoline range organics (TPH-
GRO) above the current action level of 50 mg/kg in soil samples S1 and S4 through S10.
Laboratory analysis also detected TPH-GRO above the laboratory reporting limit but below the
action level of 50 mg/kg in soil samples S2 and S3. Additionally, GMA collected three
groundwater samples from water supply wells PW-2 through PW-4. Laboratory analysis
detected benzene, toluene, and total xylenes at concentrations above their respective North
Carolina 2L Groundwater Quality Standards (NC2LGWQS) but below their respective Gross
Contamination Levels (GCL) in groundwater collected from water supply well PW2. Laboratory
analysis detected xylenes above the laboratory reporting limits but below its NC2LGWQS in the
groundwater collected from PW3. Historical soil and water supply well analytical results are
summarized in Table 2 and Table 5, respectively.

In September of 2005, GeoLogix conducted a Phase I and II Limited Site Assessment (LSA).
During the Phase I portion of the LSA, Geologix installed a monitoring well (MW-UST) within the
former location of the USTs (Figure 3). Soil samples were collected at depths of eleven and
twenty-one ft bgs. Laboratory analysis detected benzene and methyl tert-butyl ether (MTBE) at
concentrations above their respective GCLs in the groundwater sample collected from MW-
UST. Based on the results of the Phase I LSA, Geologix determined a Phase II LSA was
required. During Phase II LSA, four monitoring wells, one deep/vertical extent well (DW-1) and
three groundwater monitoring wells (MW-1 through MW-3), were constructed. Geologix
collected groundwater samples from DW-1 and MW-1 through MW-3. Laboratory analysis
detected MTBE at a concentration above its NC2LGWQS but below its GCL in the groundwater
collected from monitoring well DW-1. Laboratory analysis detected benzene above its GCL in
the groundwater collected from monitoring well MW-1 through MW-3. Laboratory analysis
detected several additional analytes above their respective NC2LGWQSs but below their
respective GCLs in the groundwater collected from monitoring wells MW-1 through MW-3.
Based on the levels of benzene and MTBE in the groundwater from monitoring wells MW-1
through MW-3, Geologix stated it appears the highest level of petroleum contamination is
directed to the southeast and may be an indicator of groundwater flow; however, Geologix did
not calculate the groundwater flow direction consistent with Phase II LSA requirements.
Geologix identified three water supply wells adjacent to the subject site. Geologix stated
laboratory analysis of the water supply well (PW-2) located on the Latta property (adjacent to
the south) detected several targeted analytes in the groundwater sample. Additionally, minor
detections of xylenes were detected in the water supply well (PW-3) located adjacent to the
south of the subject site. Geologix stated a Comprehensive Site Assessment (CSA) may be
Environmental Services Report – Mt. Harmony Grocery
1818 Mt. Harmony Church Road
Rougemont, Person County, North Carolina
NCDEQ Incident No: 3831
NCDEQ Contract No: N14007i-C
December 13, 2016
2

required.

SITE GEOLOGY AND HYDROGEOLOGY

As determined from the USGS Topographic Maps, Moriah and Timberlake, North Carolina
Quadrangles dated 2016 (Figure 1), the site is at an approximate elevation of 655 feet above
mean sea level. Historically, surface runoff on the site appeared to be generally to the
southeast. Estimated groundwater flow direction is shown on Figure 4.

The subject site is situated in the Piedmont Physiographic Province. The soils encountered in
this area are the residual product of in-place chemical weathering of rock presently underlying
the site and/or historic depositional events. In general, shallow unconfined groundwater
movement within the overlying soils is controlled largely by topographic gradients. However, as
the groundwater percolates downward, it becomes controlled by the subsurface geologic
conditions. Thus, the direction of groundwater movement in the deeper aquifers may not be
consistent with the reflecting topography.

In general, shallow unconfined groundwater movement within the overlying soils is controlled
largely by topographic gradients. Recharge occurs primarily by infiltration along higher
elevations and typically discharges into streams or other surface water bodies. The elevation of
the shallow water table is transient and can vary with seasonal fluctuations in precipitation.
Movement of shallow groundwater is generally from higher to lower elevations.

RECEPTOR INFORMATION

Risk Characterization
The answers in the following questionnaire will help with the assignment of the risk classification
for the site.

Part I - Groundwater/Surface Water/Vapor Impacts

High Risk

1. Has the discharge or release contaminated any water supply well including any used for
non-drinking purposes? YES

Historically, a water supply well (PW-2) located on the property adjacent to the
south was contaminated.

2. Is a water supply well used for drinking water located within 1,000 feet of the source
area of the discharge or release? YES

According to the City of Roxboro Public Services municipal water is not
connected, nor available to the subject site or the surrounding areas within 1,000
feet of the source area; therefore, ECS has identified eleven active water supply
wells within 1,000 feet of the source area.

Environmental Services Report – Mt. Harmony Grocery
1818 Mt. Harmony Church Road
Rougemont, Person County, North Carolina
NCDEQ Incident No: 3831
NCDEQ Contract No: N14007i-C
December 13, 2016
3

3. Is a water supply well used for any purpose (e.g., irrigation, washing cars, industrial
cooling, filling swimming pools) located within 250 feet of the source area of the release
or discharge? YES

Two active water supply wells are located within 250 feet of the source area.
Water supply well PW-1 is located approximately 135 north of the former source
area of the release and water supply well PW-2 is located approximately 150 feet
south of the source area of the release.

4. Does the groundwater within 500 feet of the source area of the discharge or release
have the potential for future use in that there is no other source of water supply other
than the groundwater? YES

According to the City of Roxboro Public Services, municipal water is not
connected, nor available to the subject site and is not available to properties
within 1,000 feet of the source area of the release.

5. Do vapors from the discharge or 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? NO

Based on the depth to groundwater beneath the site (approximately 20 feet)
petroleum vapors would not be expected be a vapor concern for the site.

6. Are there any other factors that would cause the discharge or release to pose an
imminent danger to public health, public safety, or the environment? NO

Intermediate Risk

7. Is a surface water body located within 500 feet of the source area of the discharge or
release? NO

8. Is the source area of the discharge or release located within a designated wellhead
protection area as defined in 42 USC 300h-7(e)? NO
The NCDEQ wellhead protection mapping tool indicated the subject site is not
located within a wellhead protection area. The link to the NCDEQ website is
http://www.ncwater.org/?page=63.

9. Is the discharge or release located in the Coastal Plain Physiographic region as
designated on a map entitled “Geology of North Carolina” published by the Department
in 1985? NO

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? NO
If YES, describe.

Environmental Services Report – Mt. Harmony Grocery
1818 Mt. Harmony Church Road
Rougemont, Person County, North Carolina
NCDEQ Incident No: 3831
NCDEQ Contract No: N14007i-C
December 13, 2016
4

10. Do the levels of groundwater contamination for any contaminant exceed the gross
contamination levels established by the Department of Environmental Quality? YES

Laboratory analysis in October of 2016 detected benzene and MTBE at
concentrations above their respective GCLs in groundwater collected from
monitoring wells MW-2 and MW-3.

Part II - Land Use

Property Containing Source Area of Discharge or Release

1. Does the property contain one or more primary or secondary residences (permanent or
temporary)? YES

Currently, a primary residence is located on the subject site.

2. Does the property contain a school, daycare center, hospital, playground, park, recreation
area, church, nursing home, or other place of public assembly? NO

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

The site previously operated as a convenience store and gasoline station.

4. Do children visit the property? YES

The site contains a primary residence; therefore, children visit the property.

5. Is access to the property reliably restricted consistent with its use (e.g., by fences, security
personnel, or both)? NO

6. Does pavement, buildings, or other structures cap the contaminated soil? NO

7. What is the zoning status of the property?

According to Person County Planning and Zoning Department the property is
zoned residential.

8. Is the use of the property likely to change in the next 20 years? NO
Environmental Services Report – Mt. Harmony Grocery
1818 Mt. Harmony Church Road
Rougemont, Person County, North Carolina
NCDEQ Incident No: 3831
NCDEQ Contract No: N14007i-C
December 13, 2016
5

Part III - Property Surrounding Source Area of Discharge or Release

9. What is the distance from the source area of the release to the nearest primary or
secondary residence (permanent or temporary)?

A primary residence is located approximately 90 feet north of the source area.

10. 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?

The Mt. Tirzah Park is located adjacent to the east and approximately 115 feet of
the source area.

11. What is the zoning status of properties in the surrounding area?

According to Person County Planning and Zoning Department, properties located
in the vicinity of the site are designated as residential and rural conservation (RC).

12. Briefly characterize the use and activities of the land in the surrounding area.

The surrounding area is utilized for residential, agricultural, and recreational
purposes.

Water Supply Wells

On October 10, 2016, ECS performed a walking and vehicular reconnaissance of properties
within 1,000 feet of the site. Water supply wells were observed at residences along Mt.
Harmony Church Road within 1,000 feet of the site. ECS contacted the City of Roxboro Public
Services and according to municipal records, municipal water supply wells are not located
within 1,000 feet of the subject site. Additionally, water supply well surveys were mailed via
United States Postal Service (USPS) to the property owners located within 500 feet of the source
area. ECS received a returned water supply well letter from Mr. Billy Barber (1818 Mt. Harmony
Church Road; subject site) stating the property contains an active water supply well (PW-1) and
is not connected to municipal water. ECS observed water supply wells PW-2 and PW-4 but did
not observe water supply well PW-3. ECS did not receive returned water supply well letters
from the owners of these wells. Copies of completed questionnaires are included in Appendix
A.

According to the City of Roxboro Public Services, municipal water is not connected, nor available
to the subject site and not available to the surrounding area; therefore; ECS assumes properties
with residences or buildings located within 1,000 feet of the subject site to contain water supply
wells. ECS identified eleven potable water supply wells within 1,000 feet of the site. The
closest waterline is located that could be run to the area is approximately 3.5 miles south of the
subject site along Helena-Moriah Road.

The names and addresses of the property owners with water supply wells located within 1,000
feet of the site are included in Table 3 and shown on Figure 5.
Environmental Services Report – Mt. Harmony Grocery
1818 Mt. Harmony Church Road
Rougemont, Person County, North Carolina
NCDEQ Incident No: 3831
NCDEQ Contract No: N14007i-C
December 13, 2016
6

The names and addresses of the adjacent property owners are included in Table 4 and shown on
Figure 5. Historical water supply well analytical data is included in Table 5.

Public Water Supplies

ECS contacted the City of Roxboro Public Services to inquire if municipal water is available for
the subject site and surrounding area. According to the City of Roxboro Public Services
municipal water is not connected to the subject site and not available to the surrounding area.
The closest waterline is located that could be run to the area is approximately 3.5 miles to the
south of the subject site along Helena-Moriah Road.

Surface Water

As determined from the USGS Topographic Map, Moriah and Timberlake, North Carolina
Quadrangles dated 2016 (Figure 1), the site is at an approximate elevation of 655 feet above
mean sea level. Surface runoff on the site is generally to the southeast towards Rock Fork
Branch.

Subsurface Structures

ECS did not identify subsurface structures associated with the subject site.

Land Use

The subject site is developed with the former grocery store building and a single-family residence.
The surrounding area consists of residential, agricultural, and recreational properties.

FIELD ACTIVITIES

On October 10, 2016, ECS collected groundwater samples from monitoring well MW-1 through
MW-4 and DW-1. The resident located on the subject site (1818 Mt. Harmony Church Road)
was not home at the time of sampling and ECS did not observe an exterior spigot on the house;
therefore, ECS did not sample water supply well PW-1. Additionally ECS performed a receptor
survey to identify potable water supply wells located within 1,000 feet of the subject site. Site
photographs are included in Appendix B. Field notes associated with field activities are
included in Appendix C.

Prior to monitoring well sampling activities, the static groundwater level was measured in each
monitoring well. Groundwater ranged from 21.25 feet below the top of casing (ft btoc) to 25.50
ft btoc. Well construction details and groundwater level data is summarized in Table 6 and the
locations of site monitoring wells are shown on Figure 3.

Purging and sampling were accomplished using a peristaltic pump with dedicated tubing. Each
monitoring well was purged until the following geochemical field measurements had stabilized;
temperature, pH, conductivity, and dissolved oxygen. ECS utilized a YSI model 556MPS water
quality meter calibrated using the manufacturers recommendations. Monitoring well sampling
sheets completed during field activities are included in the Appendix C. Immediately after
Environmental Services Report – Mt. Harmony Grocery
1818 Mt. Harmony Church Road
Rougemont, Person County, North Carolina
NCDEQ Incident No: 3831
NCDEQ Contract No: N14007i-C
December 13, 2016
7

collection, the groundwater samples were transferred into sample containers provided by the
laboratory.

The sample containers were labeled with ECS project number, sample identification, sample
date and time, and requested analytical analysis. The containers were placed into protective
packaging material and placed into a cooler with ice to maintain the samples at approximately
4 Celsius (C). The groundwater and soil samples were submitted to Prisms Laboratories, Inc.
located in Charlotte, North Carolina for chemical analysis. Groundwater samples were analyzed
for volatile organic compounds (VOCs) using Standard Method 6200B. ECS maintained proper
chain of custody (COC) procedures throughout the sample collection and transportation process.

LABORATORY ANALYTICAL RESULTS

Laboratory analysis detected several targeted analytes above their respective laboratory reporting
limits but below their NC2LGWQS in the groundwater samples collected from monitoring well
MW-1.

Laboratory analysis detected benzene at a concentration above its GCL in the groundwater
sample collected from monitoring well MW-2. Laboratory analysis detected several targeted
analytes above their respective NC2LGWQS but below their respective GCL in the groundwater
sample collected from monitoring well MW-2. Additionally, laboratory analysis detected
isopropylbenzene at a concentration above the laboratory reporting limit but below its
NC2LGWQS in the groundwater sample collected from monitoring well MW-2.

Laboratory analysis detected benzene and MTBE at concentrations above their respective GCLs
in the groundwater sample collected from monitoring well MW-3. Laboratory analysis detected
several targeted analytes above their respective NC2LGWQS but below their respective GCL in
the groundwater sample collected from monitoring well MW-3. Additionally, laboratory analysis
detected ethylbenzene at a concentration above the laboratory reporting limit but below its
NC2LGWQS in the groundwater sample collected from monitoring well MW-3.

Laboratory analysis detected methyl butyl ketone at a concentration above its NC2LGWQS but
below its GCL in the groundwater sample collected from monitoring well DW-1. Laboratory
analysis detected isopropyl ether at a concentration above its laboratory reporting limit but below
its NC2LGWQS in the groundwater sample collected from monitoring well DW-1.

A summary of the current groundwater laboratory analytical results is included in Table 7 and
shown on Figure 6 and a summary of historical water supply well analytical results is included in
Table 6. The laboratory analytical data sheets and COCs are included in Appendix D.

CONCLUSIONS

Based on the results of this Groundwater Sampling Event, ECS concludes the following:

 Laboratory analysis detected benzene at a concentration above its GCL in the groundwater
sample collected from monitoring well MW-2. Laboratory analysis detected several targeted
analytes at concentrations above their respective NC2LGWQS but below their respective GCL
in the groundwater sample collected from monitoring well MW-2. Additionally, laboratory
Environmental Services Report – Mt. Harmony Grocery
1818 Mt. Harmony Church Road
Rougemont, Person County, North Carolina
NCDEQ Incident No: 3831
NCDEQ Contract No: N14007i-C
December 13, 2016
8

analysis detected isopropylbenzene at a concentration above the laboratory reporting limit but
below its NC2LGWQS in the groundwater sample collected from monitoring well MW-2.

 Laboratory analysis detected benzene and MTBE at concentrations above their respective
GCLs in the groundwater sample collected from monitoring well MW-3. Laboratory analysis
detected several targeted analytes at concentrations above their respective NC2LGWQS but
below their respective GCL in the groundwater sample collected from monitoring well MW-2.
Additionally, laboratory analysis detected ethylbenzene at a concentration above the
laboratory reporting limit but below its NC2LGWQS in the groundwater sample collected from
monitoring well MW-3.

 Laboratory analysis detected methyl butyl ketone at a concentration above its NC2LGWQS
but below its GCL in the groundwater sample collected from monitoring well DW-1.
Laboratory analysis detected isopropyl ether at a concentration above the laboratory reporting
limit but below its NC2LGWQS in the groundwater sample collected from monitoring well DW-
1.

 ECS identified eleven potable water supply wells located within 1,000 feet of the source area;

ECS received a returned water supply well letter from Mr. Billy Barber (1818 Mt. Harmony
Church Road; subject site) stating a water supply well (PW-1) is located on the site and the
well is currently active; however, ECS has not received additional water supply well letters
from the surrounding residences.

 According to the City of Roxboro Public Services, municipal water is not connected, nor
available to the site and not available to the surrounding area. The closest waterline is located
that could be run to the area is approximately 3.5 miles to the south of the subject site along
Helena-Moriah Road.

 Due to the result of the risk characterization, the site meets criteria for High Risk ranking.

RECOMMENDATIONS

 ECS recommends collecting soil samples for risk-based analysis along the sidewalls of the
former UST location to determine the extent of contaminated soils on the subject site. Each
soil sample will be collected at depths of five ft bgs, ten ft bgs, and 15 ft bgs.

 ECS recommends collecting groundwater samples from monitoring wells MW-1 through
MW-3, MW-UST, DW-1, the three newly installed monitoring wells, and water supply wells
PW-1, PW-2, PW-4, WSW-3, and WSW-4.

 ECS recommends installing three additional monitoring wells downgradient of the source
area to determine the extent of the contamination associated with the subject site.

 ECS recommends, upon the completion of the installation of the three additional monitoring
wells, surveying all monitoring wells associated with the site for TOC elevation.

 ECS recommends that a copy of this report be submitted to the current property owner.
FIGURES
SOURCE:

USGS TOPOGRAPHIC MAP
MORIAH & TIMBERLAKE
NORTH CAROLINA QUADRANGLE
DATED 2016

SCALE: 1 : 24,000

FIGURE 1
SITE LOCATION MAP

MT. HARMONY GROCERY
1818 MT. HARMONY CHURCH ROAD
ROUGEMONT, PERSON COUNTY,
NORTH CAROLINA
NCDEQ INCIDENT: 3831
ECS PROJECT: 49:3051
SITE
FIGURE 2
SITE AERIAL MAP

MT. HARMONY GROCERY
1818 MT. HARMONY CHURCH ROAD
ROUGEMONT, PERSON COUNTY,
NORTH CAROLINA
NCDEQ INCIDENT: 3831
ECS PROJECT: 49:3051
SOURCE:

GOOGLE EARTH
DATED 2013

SCALE AS SHOWN
Scale: 1 inch = 170 feet
SITE
AGRICULTURAL
RESIDENTIAL AGRICULTURAL
PARK
LEGEND

Approximate Location of Proposed Monitoring Well

SOURCE:

GOOGLE EARTH
DATED 2013

SCALE AS SHOWN

FIGURE 3
MONITORING WELL LOCATION MAP

MT. HARMONY GROCERY
1818 MT. HARMONY CHURCH ROAD
ROUGEMONT, PERSON COUNTY,
NORTH CAROLINA
NCDEQ INCIDENT: 3831
ECS PROJECT: 49:3051
Scale: 1 inch = 20 feet
MW-2
LEGEND

Approximate Location of Monitoring Well

Approximate Location of Former USTs

MW-4
DW-1
MW-3
MW-1
MW-UST
MW-2
MW-3
SOURCE:

GOOGLE EARTH
DATED 2013

SCALE AS SHOWN

FIGURE 4
GROUNDWATER ELEVATION MAP

MT. HARMONY GROCERY
1818 MT. HARMONY CHURCH ROAD
ROUGEMONT, PERSON COUNTY,
NORTH CAROLINA
NCDEQ INCIDENT: 3831
ECS PROJECT: 49:3051
Scale: 1 inch = 20 feet
LEGEND

Approximate Location of Monitoring Well

Estimated Groundwater Flow Direction
(Based on USGS Topographic Map)

MW-4
MW-1
DW-1
MW-UST
SOURCE:

GOOGLE EARTH
DATED 2013

SCALE AS SHOWN

FIGURE 5
WATER SUPPLY WELL LOCATION MAP

MT. HARMONY GROCERY
1818 MT. HARMONY CHURCH ROAD
ROUGEMONT, PERSON COUNTY,
NORTH CAROLINA
NCDEQ INCIDENT: 3831
ECS PROJECT: 49:3051
LEGEND

Approximate Location of
Water Supply Well

1,000 ft.
Radius
WSW-1
SITE
PW-1
Scale: 1 inch = 290 feet
WSW-1
WSW-2
PW-4
WSW-5
WSW-6
WSW-7
WSW-8
WSW-3
WSW-4
500 ft.
Radius
PW-2
SOURCE:

PERSON COUNTY GIS
DATED 2013

SCALE AS SHOWN

FIGURE 6
ADJACENT PROPERTIES MAP

MT. HARMONY GROCERY
1818 MT. HARMONY CHURCH ROAD
ROUGEMONT, PERSON COUNTY,
NORTH CAROLINA
NCDEQ INCIDENT: 3831
ECS PROJECT: 49:3051
LEGEND

Property Number Corresponding
with Table 7

SITE
Scale: 1 inch = 210 feet
1
2
3
4
5
3
MW-2
MW-3
MW-1
DW-1
MW-UST
NS
SOURCE:

GOOGLE EARTH
DATED 2013

SCALE AS SHOWN

FIGURE 7
GROUNDWATER CONCENTRATION MAP

MT. HARMONY GROCERY
1818 MT. HARMONY CHURCH ROAD
ROUGEMONT, PERSON COUNTY,
NORTH CAROLINA
NCDEQ INCIDENT: 3831
ECS PROJECT: 49:3051
Scale: 1 inch = 40 feet
LEGEND

Approximate Location of Monitoring Well

Concentration Exceeds NC2LGWQS

Concentration Exceeds GCL

BRL Below Laboratory Reporting Limit

J Below reporting limit, concentration is an estimate

NS Not Sampled

MW-4
810
1,2,4-Trimethylbenzene 2,600
1,2-Dichloroethane 860
1,3,5-Trimethylbenzene 810
Acetone 560 J
Benzene 8,600
Ethylbenzene 410
Isopropyl Ether 970
Methyl Butyl Ketone 180
Methyl-tert-Butyl Ether 86,000
Naphthalene 590
Toluene 7,700
Total Xylenes 13,000
1,2,4-Trimethylbenzene 920
1,2-Dichloroethane 100
1,3,5-Trimethylbenzene 250
Benzene 18,000
Ethylbenzene 720
Isopropyl Ether 470
Isoproylbenzene 69
Methyl Butyl Ketone 760
Methyl Isobutyl Ketone 150
Methyl-tert-Butyl Ether 19,000
Naphthalene 460
n-Propylbenzene 130
Toluene 690
Total Xylenes 900
8,600
Isopropyl Ether 2.5
Methyl Butyl Ketone 190
1,2,4-Trimethylbenzene 18
1,3,5-Trimethylbenzene 5.2
Isoproylbenzene 1.4
Naphthalene 2.5
n-Propylbenzene 2.0
Total Xylenes 5.3

TABLES
UST ID
Number
Last
Contents
Previous
Contents
Capacity
(in Gallons)
Construction
Details
Tank
Dimensions
Installation
Date
Removal
Date Status
1 Gasoline Gasoline 1,000 Unknown Unknown Unknown 1988 Removed
2 Gasoline Gasoline 1,000 Unknown Unknown Unknown 1988 Removed
Rougemont, Person County, North Carolina
ECS Project: 49:3051
Table 1
UST Information
Mt. Harmony Grocery
1818 Mt. Harmony Church Road
NCDEQ Incident: 3831
EPA Method 5030
Sample ID Type Sample Date Sample Depth
S1 Composite 3/8/1990 3-6 780
S2 Composite 3/8/1990 3-6 34
S3 Composite 3/8/1990 3-8 5.8
S4 Composite 3/8/1990 3-9 47.0
S5 Composite 3/8/1990 4 39.7
S6 Grab 3/8/1990 8 229
S7 Grab 3/8/1990 9 22.2
S8 Grab 3/8/1990 9 1,780
S9 Grab 3/8/1990 8 1220
S10 Grab 3/8/1990 6 1,520
50
NCDEQ = North Carolina Department of Environmental Quality
BOLD = Detected above the Action Level
ECS Project: 49:3051
Analytical Method
TPH-GRO = Total Petroleum Hydrocarbons - Gasoline Range Organics
BRL = Below Reporting Limit
NCDEQ UST Section's Action Level (mg/kg)
All results are listed in mg/kg parts per million.
mg/kg = Milligrams per Kilogram
Contaminant of Concern TPH-GRO NCDEQ Incident: 3831
Table 2
Summary of Historical Soil Sample Analytical Results
Mt. Harmony Grocery
1818 Mt. Harmony Church Road
Rougemont, Person County, North Carolina
Water Supply
Well ID Well Owner/ Address Well Address Well Use Well Depth
(ft bgs)
Approximate
Distance from
Source Area of
Release (ft)
PW-1
Billy Barber
90 Fletcher Ridge Road
Timberlake, NC 27583
1818 Mt Harmony Church Road
Rougemont, NC 27572
(Subject Site)
Potable Unknown 165 Feet
North
PW-2
Kristi Latta
1850 Mt. Harmony Church Road
Rougemont, NC 27572
1850 Mt. Harmony Church Road
Rougemont, NC 27572 Potable Unknown 165 Feet
South
PW-4
Moriah Volunteer Fire Department
1879 Mt. Harmony Church Road
Rougemont, NC 27572
1879 Mt. Harmony Church Road
Rougemont, NC 27572 Potable Unknown 430 Feet
Southeast
WSW-1
Mt. Harmony Baptist Church
1655 Mt. Harmony Church Road
Rougemont, NC 27572
1655 Mt. Harmony Church Road
Rougemont, NC 27572 Potable Unknown 745 Feet
North-northeast
WSW-2
Clifton Bradsher
309 Peed Road
Rougemont, NC 27572
50 Glen Fogleman Road
Rougemont, NC 27572 Potable Unknown 620 Feet
Northeast
WSW-3
Elger and Bobie Latta
Mt. Harmony Church Road
Rougemont, NC 27572
Mt. Harmony Church Road
Rougemont, NC 27572 Potable Unknown 300 Feet South
WSW-4
County of Person
304 South Morgan Street
Roxboro, NC 27573
Mt. Harmony Church Road
Rougemont, NC 27572 Potable Unknown 290 Feet
East-southeast
WSW-5
Crystal Scott
1915 Mt. Harmony Church Road
Rougemont, NC 27572
1915 Mt. Harmony Church Road
Rougemont, NC 27572 Potable Unknown 530 Feet
South-southeast
WSW-6
Helen Bowling
1941 Mt. Harmony Church Road
Rougemont, NC 27572
1941 Mt. Harmony Church Road
Rougemont, NC 27572 Potable Unknown 640 Feet
South-southeast
WSW-7
Ronald Mooney
1988 Mt. Harmony Church Road
Rougemont, NC 27572
1988 Mt. Harmony Church Road
Rougemont, NC 27572 Potable Unknown 860 Feet
South
WSW-8
Ryan Mooney
2028 Mt. Harmony Church Road
Rougemont, NC 27572
2028 Mt. Harmony Church Road
Rougemont, NC 27572 Potable Unknown 950 Feet
South
ft = feet
ECS Project: 49:3051
ft bgs = feet below the ground surface
Table 3
Water Supply Well Survey
Mt. Harmony Grocery
1818 Mt. Harmony Church Road
Rougemont, Person County, North Carolina
NCDEQ Incident: 3831
Indentification Number on
Figure 7 Map PIN Parcel Address Owner and Owner Address Active City Water Account Water Well
On-Site
1 0943-00-05.4578.000 1655 Mt. Harmony Church Road
Mt. Harmony Baptist Church
1655 Mt. Harmony Church Road
Rougemont, NC 27572
No Yes
2 0943-00-04-5687.000 Mt. Harmony Church Road
County of Person
304 South Morgan Street
Roxboro, NC 27573
No Yes
3 0933-00-94-8047.000 Mt. Harmony Church Road
Bobbie Elger
131 Peed Rd
Rougemont, NC 27572
No
(Vacant Land)Yes
4 0933-00-94-9405.000 Jim Latta Road
Billy Barber
90 Fletcher Ridge Road
Timberlake NC, 27583
No
(Vacant Land)Yes
5 0933-00-95-6209.000 Mt. Harmony Church Road
V & E Farm LLC
180 White Oak Drive
Roxboro, NC 27573
No
(Agricultural)Yes
NCDEQ Incident: 3831
ECS Project: 49:3051
Rougemont, Person County, North Carolina
Table 4
Adjacent Properties
Mt. Harmony Grocery
1818 Mt. Harmony Church Road
PW2 3/9/1990 218 1,340 265 1,360
PW3 3/9/1990 BRL BRL BRL 2.7
PW4 3/9/1990 BRL BRL BRL BRL
1 600 600 500
5,000 260,000 84,500 85,500
BOLD = Detected above the NC2LGWQS
Table 5
Summary of Historical Water Supply Well Analytical Results
Mt. Harmony Grocery
1818 Mt. Harmony Church Road
Rougemont, Person County, North Carolina
NCDEQ Incident: 3831
TolueneEthylbenzeneTotal XylenesECS Project: 49:3051
Analytical Method Standard Method 6200B (or Equivalent)
Contaminant of Concern (µg/L)BenzeneSample ID Sample Date
GCL (µg/L)
NC2LGWQS = North Carolina 2L Groundwater Quality Standard as of April 1, 2013
GCL = NCDEQ's Gross Contamination Levels for Groundwater as of April 16, 2012
(µg/L) = Micrograms per Liter
BRL = Below Laboratory Reporting Limit
NC2LGWQS (µg/L)
Monitoring
Well ID
Date
Measured
Depth to
Groundwater
(ft. btoc)
Date
Installed
Total Well
Depth
(ft. btoc)
Screen
Interval
(ft. btoc)
TOC
Elevation
Groundwater
Elevation (ft)
MW-1 10/10/2016 21.25 9/23/2004 37 27-37 NA NA
MW-2 10/10/2016 24.76 5/25/2005 40 20-40 NA NA
MW-3 10/10/2016 24.89 5/25/2005 40 20-40 NA NA
DW-1 10/10/2016 25.50 5/26/2005 65 60-65 NA NA
NCDEQ Incident: 3831
NA = Not Available
ft. btoc = Feet Below Top of Casing
TOC = Top of Casing Elevation Measured on October 11, 2016
Table 6
Well Construction and Groundwater Elevation Details
Mt. Harmony Grocery
1818 Mt. Harmony Church Road
Rougemont, Person County, North Carolina
ECS Project: 49:3051
MW-1 10/10/2016 18 BRL 5.2 BRL BRL BRL BRL 1.4 BRL BRL BRL 2.5 2.0 BRL 5.3
MW-2 10/10/2016 920 100 250 BRL 18,000 720 470 69 760 150 19,000 460 130 690 900
MW-3 10/10/2016 2,600 860 810 560 J 8,600 410 970 BRL 180 BRL 86,000 590 BRL 7,700 13,000
DW-1 10/10/2016 BRL BRL BRL BRL BRL BRL 2.5 BRL 190 BRL BRL BRL BRL BRL BRL
400 6 400 6,000 1 600 70 70 40 100 20 6 70 600 500
28,500 6,000 25,000 6,000,000 5,000 84,500 70,000 25,000 40,000 100,000 20,000 6,000 30,000 260,000 85,500
BOLD = Detected above the NC2LGWQS Total XylenesAnalytical Method
1,2,4-Trimethylbenzene(µg/L) = Micrograms per Liter
GCL = NCDEQ's Gross Contamination Levels for Groundwater as of April 16, 2012
NC2LGWQS = North Carolina 2L Groundwater Quality Standard as of April 1, 20131,2-Dichloroethane1,3,5-TrimethylbenzeneAcetoneECS Project: 49:3051
Sample ID Sample Date
Standard Method 6200B
GCL (µg/L)
NC2LGWQS (µg/L)BenzeneEthylbenzeneTable 7
Summary of Current Groundwater Analytical Results
Mt. Harmony Grocery
1818 Mt. Harmony Church Road
Rougemont, Person County, North Carolina
NCDEQ Incident: 3831
BRL = Below Laboratory Reporting Limit
J = Detetcted below laboratory reporting limit; therefore result is an estimated concentration Isopropyl EtherMethyl Butyl KetoneMethyl-tert-Butyl EtherNaphthaleneTolueneIsopropylbenzeneMethyl Isobutyl Ketonen-Propylbenzene

APPENDIX A

APPENDIX B

SITE PHOTOGRAPHS

MT. HARMONY GROCERY
1818 MT. HARMONY CHURCH ROAD
ROUGEMONT, PERSON COUNTY,
NORTH CAROLINA
NCDEQ INCIDENT: 3831
ECS PROJECT: 49:3051

Photograph 1: View of the subject site. View is to the northwest.

Photograph 2: View of monitoring well MW-3. View is to the northeast.

SITE PHOTOGRAPHS

MT. HARMONY GROCERY
1818 MT. HARMONY CHURCH ROAD
ROUGEMONT, PERSON COUNTY,
NORTH CAROLINA
NCDEQ INCIDENT: 3831
ECS PROJECT: 49:3051

Photograph 3: View of the residence on the subject site. View is to the northwest.

Photograph 4: View of water supply well WSW-1. View is to the west.

APPENDIX C

APPENDIX D

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