WS-6371_24093_CA_MRP_20200708

GROUNDWATER MONITORING REPORT
Todd General Store
3866 Todd Railroad Grade Road
Todd, Ashe County, North Carolina
NCDEQ Incident #24093
ATC Project # SLP2409302

July 8, 2020

TABLE OF CONTENTS

1.0 SITE IDENTIFICATION .......................................................................................1
2.0 EXECUTIVE SUMMARY .....................................................................................2
3.0 SITE DESCRIPTION ..............................................................................................3
3.1 Site Characterization ................................................................................3
3.2 Site Background .......................................................................................4
3.3 Site and Regional Geology ......................................................................5
3.4 Site and Regional Hydrogeology .............................................................5
4.0 AGGRESSIVE FLUID-VAPOR RECOVERY ....................................................6
5.0 GROUNDWATER CHARACTERIZATION.......................................................6
5.1 Water Supply Wells .................................................................................6
5.2 Groundwater Levels .................................................................................6
5.3 Groundwater Quality ...............................................................................7
6.0 CONCLUSIONS AND RECOMMENDATIONS .................................................7

TABLES
Table 1 Water Supply Well Information
Table 2 Monitoring Well Construction Details
Table 3 Groundwater Elevation Data
Table 4 Field Parameters
Table 5 Groundwater Analytical Data

FIGURES
Figure 1 Site Location Map
Figure 2 Site Location Map with Water Supply well Location
Figure 3 Site Map
Figure 4 Groundwater Elevation Contour Map
Figure 5 Groundwater Quality Map

APPENDICES

Appendix A AFVR and Groundwater Monitoring Field Notes
Appendix B Laboratory Analytical Report

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2.0 EXECUTIVE SUMMARY
ATC Group Services of North Carolina, P.C. (ATC) has completed a Groundwater Monitoring
Report (GMR) documenting the results of an 8-hour AFVR event on May 19, 2020 and subsequent
groundwater monitoring event on June 2, 2020 at the Todd General Store site located at 3866 Todd
Railroad Grade Road in Todd, Ashe County, NC.

This GMR is being performed in accordance with Task Authorization TA-02 issued on May 6,
2020 by the Trust Fund Branch of the Underground Storage Tank (UST) Section, Division of
Waste Management, North Carolina Department of Environmental Quality (NCDEQ). The work
is being performed as part of the State Lead Contract #N17004 between NCDEQ and ATC.

In 1959, two gasoline (1,000 gallon and 500 gallon) USTs were installed at the Todd General Store
site. The USTs were removed in March 2002, along with 31 cubic yards of contaminated soil near
the 500-gallon UST. Total petroleum hydrocarbons (TPH) were not detected in the soil samples
from the base of the 1,000-gallon UST so no soil was removed from that area. Light Non-Aqueous
Phase Liquid (LNAPL) was not observed during the excavation and removal. There are currently
no petroleum USTs located at the site.

Additional assessment between 2003 and 2007 indicated the presence of light non-aqueous phase
liquid (LNAPL) in monitoring wells MW-1 and MW-3, as well as dissolved volatile organic
compounds (VOCs) exceeding the 15A NCAC 02L .0202 groundwater quality standards (2L
Standards) in MW-1, MW-3, MW-4, MW-5, MW-6, MW-7, MW-8, MW-9, MW-10. No detected
VOCs exceeded the Gross Contamination Levels (GCLs).

In accordance with TA-02, ATC supervised an 8-hour AFVR event on May 19, 2020 using
monitoring wells MW-1 and MW-3 due to the presence of LNAPL. ATC coordinated with the
property owner to uncover monitoring well MW-1. On June 2, 2020, ATC collected a sample from
monitoring well MW-1. A sample was not collected from monitoring well MW-3 due to the
presence of LNAPL (0.33 feet). ATC searched for missing monitoring wells MW-7, MW-8, and
MW-9 using a metal detector, but the wells were unable to be found. The groundwater sample was
analyzed for volatile organic compounds (VOCs). Concentrations were compared to the GCLs and
the 2L Standards. The findings from the recent and historical activities indicate the following:

 Municipal water is not available to the area within a 1,000 foot radius from the site and
water supply wells are active and in use for drinking water and irrigation. Wells WSW-1,
WSW-2, and WSW-28 are the nearest wells, but none are located downgradient of the
source area.
 Prior to the AFVR event on May 19, 2020, LNAPL was present in monitoring wells MW-
1 and MW-3 at a thicknesses of 0.02 feet, and 0.78 feet, respectively. Prior to sampling on
June 2, 2020, no LNAPL was present in well MW-1 and the LNAPL thickness in MW-3
was 0.33 feet. The corrected depths to groundwater on June 2, 2020 were 5.78 and 8.77
feet below top of casing (ft toc) in wells MW-1 and MW-3, respectively.
 The AFVR event removed 759 gallons of petroleum contact groundwater, and less than 1
pound of vaporous hydrocarbons. Photoionization (PID) detector readings of the emissions
were less than 15 parts per million (ppm). The low recovery of VOCs (and low PID
Groundwater Monitoring Report July 8, 2020
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readings) is likely the result of old degraded gasoline with a reduced volatile component,
and may also be the result of a combined release of gasoline and kerosene or diesel.
 Concentrations of ethylbenzene, naphthalene, toluene, 1,2,4-trimethylbenzene, 1,3,5-
trimethylbenzene, and total xylenes in MW-1 exceeded the 2L Standards.
 Based on the November 6, 2019 groundwater elevation data, groundwater flow is generally
to the south and southwest towards Elk Creek, located approximately 250 to 310 feet
(southwest to south) of the source area.
It appears that the AFVR event was successful in reducing the amount of LNAPL in wells MW-1
and MW-3; however, that success may be temporary. The depth to water measured in well MW-1
before and after the AFVR event was slightly above the top of well screen. Thus, the LNAPL
measurements may not be representative of actual conditions. ATC recommends the following:

 Install replacement wells MW-8R and MW-9R to evaluate if the contamination has
migrated off-site. The samples collected from wells MW-8 and MW-9 in 2003 and 2007
indicated concentrations of VOCs exceeding the 2L Standards.
 Collect a sample of the LNAPL from wells MW-1 (if present) and MW-3 for the analysis
of Total Petroleum Hydrocarbons, Gasoline and Diesel Range Organics (TPH-GRO/DRO)
to evaluate the type of product.
 Conduct a combined Mobile Multi-Phase Extraction (MMPE)/Air Sparging (AS) event in
the winter of 2020 using wells MW-1 and MW-3 as extraction wells and well MW-6 as an
AS well.
 Conduct a comprehensive groundwater monitoring event approximately 30 days following
the MMPE/AS event.
 Consider additional soil excavation depending on the presence of LNAPL in the future in
wells MW-1 and MW-3, and to remove contaminated soil in the vicinity of the former UST
system.

3.0 SITE DESCRIPTION
3.1 Site Characterization
The NCDEQ retained ATC to provide environmental consulting services for Todd General Store
located in Todd, Ashe County, North Carolina. Figure 1 depicts the site location on a topographic
map. The site currently operates as a general store and formerly was a vehicle service station facility
with two gasoline USTs. Municipal water is not available to the site and surrounding area. Thirty-two
potable water supply wells (29 different properties), including two on-site wells, were identified
within a 1,000 foot radius of the site in the March 2002 receptor survey. Figure 2 illustrates the area
surrounding the site with water supply well locations and Table 1 provides water supply well
information. Based on the topography and groundwater flow direction, the nearest water supply wells
include WSW-1 (on-site, sidegradient), WSW-2 (on-site, upgradient), WSW-27 (450 feet
downgradient, across a stream), and WSW-28 (150 feet sidegradient). The most “at-risk” wells appear
to be WSW-1, WSW-2, and WSW-28 due to the proximity of the wells to the source area, although
none of these wells are located downgradient of the source area.

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3.2 Site Background
In 1959, two gasoline (1,000 gallon and 500 gallon) USTs were installed at the Todd General Store
site. A Limited Phase II Environmental Site Assessment was conducted in March 2002 and
revealed concentrations of petroleum contaminants in the soil exceeding regulatory limits near the
500-gallon UST, but not near the 1,000-gallon UST. The USTs were subsequently removed in
March 2002, along with 31 cubic yards of contaminated soil near the 500-gallon UST. LNAPL
was not observed during the excavation and removal. A receptor survey conducted as part of the
assessment identified 29 properties (32 wells) with water supply wells within 1,000 feet of the
source area.

Between December 2002 and April 2003, six groundwater monitoring wells were installed (MW-
1 through MW-6) as part of a Limited Site Assessment. A groundwater monitoring event in April
2003 discovered a film of LNAPL in monitoring well MW-3, and concentrations of petroleum
constituents exceeding the 2L standards in monitoring wells MW-1, MW-4, MW-5, and MW-6.

Four additional monitoring wells were installed in September 2003 (MW-7 through MW-9) and
November 2003 (MW-10). Monitoring well construction details are presented in Table 2. A
Comprehensive Site Assessment conducted in December 2003 detected concentrations of
petroleum constituents exceeding the 2L Standards in monitoring wells MW-1, MW-8, and MW-
9 and a film of LNAPL in monitoring well MW-3. Petroleum constituents were not detected in
downgradient monitoring well MW-10.

In February 2004, NCDEQ authorized an excavation of four backhoe pits for the purpose of
collecting soil samples in and around the former location of the 500-gallon gasoline UST. Soil
samples were analyzed and petroleum constituents were not detected. Residual contaminated soil
remains beneath the former 500-gallon gasoline UST, with the depth to groundwater
approximately 13 to 18 feet below ground surface (ft bgs).

A Corrective Action Plan (CAP) submitted in August 2004 proposed natural attenuation as a
remediation option with one year of quarterly groundwater monitoring and nine years of annual
groundwater monitoring. The CAP also stated that “If free product is detected in well MW-3 in
the future, AFVR or MMPE will need to be employed to eliminate free product.”

The next monitoring event indicated by the historical record was conducted on February 21, 2007.
LNAPL was observed in MW-1 (0.55 feet) and MW-3 (1.20 feet), with petroleum constituents
exceeding 2L Standards in MW-8 and MW-9.

In November 2019, ATC performed groundwater monitoring activities and an updated receptor
survey at the site including sampling of monitoring wells MW-2, MW-5, MW-6, and MW-10 and
the onsite water supply well WSW-1. LNAPL was observed in MW-3 (0.78 feet). No VOCs were
detected in monitoring wells MW-2, MW-5, MW-6, and MW-10, or water supply well WSW-1.
Monitoring well MW-1 was not accessible at that time due to the construction of a wooden
walkway over the well.

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3.3 Site and Regional Geology

According to the Geologic Map of North Carolina, produced by the State of North Carolina in
1985, the site lies in an area of unconformity in the Blue Ridge Belt of North Carolina. The rock
type at the site has been identified as biotite granitic gneiss. In most areas, the upper Blue Ridge
subsurface consists of unconsolidated residual soil, variously known as residuum, saprolite, or
partially weathered rock (PWR) that has developed from in-place weathering of the underlying
metamorphic bedrock. The residual soils vary in consistency and depth based on local conditions.
Bedrock can be found at depths ranging from the surface as outcrops down to greater than 100 feet
in areas of easily weathered rock types. Areas near streams and rivers in the Blue Ridge may also
contain alluvium deposited during flood events.

Based on well construction records for monitoring wells MW-1 through MW-10, the subsurface
soils consist primarily of sandy silt to the average boring depth of 15 feet below ground surface
(ft-bgs). MW-6 is the deepest boring with a depth of 40 ft bgs, with sandy silt observed to the
termination depth.

3.4 Site and Regional Hydrogeology

The shallow aquifer occurrence varies in depth from ground surface at springs, creeks, and rivers
to as deep as 50 feet or more beneath upland surfaces in some parts of the Blue Ridge. ATC
encountered groundwater between 1.79 feet and 10.79 feet below the top of casings (ft toc) in the
monitoring wells at the site during the November 2019 monitoring event. Water in the alluvium
or unconsolidated residual material, including saprolite and PWR, usually behaves as an
unconfined aquifer, or water table, and will yield water with head elevation equivalent to the first
elevation where water was encountered. Permeability varies with lithology and is typically
relatively low in residual soils, with higher permeability in saprolite or PWR due to relict rock
texture and variable susceptibility to weathering exhibited by different minerals in the rock.
Groundwater flow in residual soils or alluvium is usually in rough concurrence with local
topographic conditions and is toward local drainage features.

The bedrock fractures or other planar features of the Blue Ridge Physiographic Province generally
constitute the bedrock aquifer, with the surrounding rock material being effectively impermeable.
Along with fractures, contacts between rock bodies probably constitute zones of significant
groundwater occurrence in the bedrock. The surrounding material and overlying residuum tend to
make the bedrock aquifer a semi-confined aquifer. That is, the overlying water and soil weight
normally results in pressure that causes water in a borehole, which intersects a fracture or other
feature, to rise above the elevation of the fracture or feature. Most modern water supply wells in
the Blue Ridge consist of a casing set through the residual soils into the upper bedrock followed
by an open borehole into the bedrock where water-bearing fractures were encountered during the
drilling. Except for sampling of the site and nearby water supply wells, evaluation of bedrock water
quality or hydrology was beyond the scope of the GMR.

Elk Creek, a Class WS-IV (water supply) and Tr (trout waters) stream, is located approximately
250 feet from the source area to the southwest to approximately 310 feet from the source area to
the south).
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4.0 AGGRESSIVE FLUID-VAPOR RECOVERY
ATC supervised an 8-hour AFVR event on May 19, 2020, which was performed by Contaminant
Control Inc (CCI). Dual-phase recovery of groundwater and vapor was performed using
monitoring wells containing LNAPL, MW-1 (0.02 feet) and MW-3 (0.78 feet). The depth to
LNAPL and groundwater are presented in Table 3. ATC recorded performance data (Appendix A)
to monitor fluid recovery, VOC concentrations of recovered vapor, and fluid levels. Very little
hydrocarbons (less than 1 pound) were removed in the vapor phase and 759 gallons of petroleum
contact groundwater were removed during the event.

Due to the age of the USTs installed in September 1959, the low VOCs recovered from the AFVR
may be due to the degradation of the more volatile components of the LNAPL. Note also that
naphthalene within the groundwater samples from wells MW-1, MW-8, and MW-9 is relatively
high compared to typical gasoline releases, at 7 percent, 60 percent, and 21 percent, respectively
of the total of naphthalene, benzene, ethylbenzene, toluene, and xylenes. It is possible that the
LNAPL may be a combination of gasoline and kerosene or diesel.

5.0 GROUNDWATER CHARACTERIZATION
5.1 Water Supply Wells
The receptor survey conducted in March 2002 identified thirty-two water supply wells (29
different properties) within the 1,000 feet radius from the source area, including two on-site.
Updated property owner information is available in Table 1 and approximate water supply well
locations are shown on Figure 2. The wells are reportedly used for drinking water and irrigation
water. On-site water supply well WSW-1 was sampled during the November 2019 monitoring
event and analyzed for VOCs by EPA Method 6200B. No VOCs were detected in the water supply
well sample. The majority of the water supply wells are located upgradient (north) from the
direction of groundwater flow, which is to the south. Thus, the majority of water supply wells are
not likely at risk from the UST release at the site. WSW-27 is the only water supply well located
south of the UST basin and in the direction of groundwater flow, but on the opposite side of Elk
Creek. Elk Creek is located approximately 310 feet south of the site. Based on the topography and
groundwater flow direction, the nearest water supply wells include WSW-1 (on-site, sidegradient),
WSW-2 (on-site, upgradient), WSW-27 (450 feet downgradient, across a stream), and WSW-28
(150 feet sidegradient). The most “at-risk” wells appear to be WSW-1, WSW-2, and WSW-28 due
to the proximity of the wells to the source area, although none of these wells are located
downgradient of the source area.

5.2 Groundwater Levels

On June 2, 2020, two weeks after the AFVR event, a groundwater monitoring event was conducted
for monitoring wells MW-1, MW-3, MW-7, MW-8, and MW-9. ATC coordinated with the
property owner to uncover monitoring well MW-1. ATC collected a sample from monitoring well
MW-1. A sample was not collected from monitoring well MW-3 due to the presence of LNAPL
(0.33 feet). ATC searched for missing monitoring wells MW-7, MW-8, and MW-9 using a metal
detector, but the wells were unable to be found. Monitoring well construction details are provided
in Table 2 and depth to groundwater and groundwater elevation data are provided in Table 3. The
depth to water measured in well MW-1 before and after the AFVR event was slightly above the
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screen interval. A site map with monitoring well locations is presented on Figure 3. Figure 4
depicts a groundwater elevation contour map using depth to water data collected in November
2019 with the groundwater flow direction towards the southwest and south. Field notes from the
June 2020 groundwater monitoring event are presented in Appendix A.

5.3 Groundwater Quality

On June 2, 2020, a groundwater sample was collected from monitoring well MW-1. During sampling
activities, a three-volume well purge was implemented prior to groundwater sample collection to
ensure a representative groundwater sample. Field parameters are presented in Table 4. The water
sample was collected in laboratory-supplied, preserved containers; entered into chain of custody
control; placed on ice; and delivered to North Carolina accredited Pace Analytical Laboratory in
Huntersville, North Carolina. The groundwater sample was analyzed for VOCs by Method 6200B. A
water quality map is presented on Figure 5. The analytical report is included in Appendix B.
Groundwater analytical results are summarized in Table 5 and indicate the following:

 Concentrations of ethylbenzene, naphthalene, toluene, 1,2,4-trimethylbenzene, 1,3,5-
trimethylbenzene, and total xylenes in MW-1 exceeded the 2L Standards.
 The June 2, 2020 VOC concentrations in MW-1 are less than those reported in December
9, 2002.
As part of ATC’s quality assurance and quality control (QA and QC) measures, a data review of the
laboratory reports was conducted. During the review, it was found that the sample was received from
the laboratory in acceptable condition and properly preserved. The sample were analyzed within
correct holding times and reported within the lab report, and the chain of custody was properly
completed by all parties. The laboratory QC report shows that an internal blank was analyzed for each
method that was used for the original sample. The laboratory fortified blank (LFB) and laboratory
control sample (LCS) data results were also provided for each analytical method. Refer to the
laboratory reports in Appendix B for details regarding QA results for the laboratory samples and any
noted exceptions. Overall, ATC concludes that the laboratory results are usable and any exceptions
do not significantly impact the conclusions presented in this report.

6.0 CONCLUSIONS AND RECOMMENDATIONS
On behalf of the Trust Fund Branch of the UST Section, ATC has completed a GMR documenting
the May 19, 2020 AFVR event and June 2, 2020 groundwater monitoring event for the Todd
General Store site located at 3866 Todd Railroad Grade Road in Todd, Ashe County, North
Carolina.

The findings from the recent and historical activities indicate the following:

 Municipal water is not available to the area within a 1,000 foot radius from the site and
water supply wells are active and in use for drinking water and irrigation. Wells WSW-1,
WSW-2, and WSW-28 are the nearest wells, but none are located downgradient of the
source area.
Groundwater Monitoring Report July 8, 2020
Todd General Store, Incident #24093, Todd, Ashe Co, NC ATC Project # SLP2409302
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 Prior to the AFVR event on May 19, 2020, LNAPL was present in monitoring wells MW-
1 and MW-3 at a thicknesses of 0.02 feet, and 0.78 feet, respectively. Prior to sampling on
June 2, 2020, no LNAPL was present in well MW-1 and the LNAPL thickness in MW-3
was 0.33 feet. The corrected depths to groundwater on June 2, 2020 were 5.78 and 8.77
feet below top of casing (ft toc) in wells MW-1 and MW-3, respectively.
 The AFVR event removed 759 gallons of petroleum contact groundwater, and less than 1
pounds of vaporous hydrocarbons. Photoionization (PID) detector readings of the
emissions were less than 15 parts per million (ppm). The low recovery of VOCs (and low
PID readings) is likely the result of old degraded gasoline with a reduced volatile
component, and may also be the result of a combined release of gasoline and kerosene or
diesel.
 Concentrations of ethylbenzene, naphthalene, toluene, 1,2,4-trimethylbenzene, 1,3,5-
trimethylbenzene, and total xylenes in MW-1 exceeded the 2L Standards.
 Based on the November 6, 2019 groundwater elevation data, groundwater flow is generally
to the south and southwest towards Elk Creek, located approximately 250 to 310 feet
(southwest to south) of the source area.
It appears that the AFVR event was successful in reducing the amount of LNAPL in wells MW-1
and MW-3, however it may be temporary. The depth to water measured in well MW-1 before and
after the AFVR event was slightly above the top of well screen. Thus, the LNAPL measurements
may not be representative of actual conditions. ATC recommends the following:

 Install replacement wells MW-8R and MW-9R to evaluate if the contamination has
migrated off-site. The samples collected from wells MW-8 and MW-9 in 2003 and 2007
indicated concentrations of VOCs exceeding the 2L Standards.
 Collect a sample of the LNAPL from wells MW-1 (if present) and MW-3 for the analysis
of TPH-GRO/DRO to evaluate the type of product.
 Conduct a combined Mobile Multi-Phase Extraction (MMPE)/Air Sparging (AS) event in
the winter of 2020 using wells MW-1 and MW-3 as extraction wells and well MW-6 as an
AS well.
 Conduct a comprehensive groundwater monitoring event approximately 30 days following
the MMPE/AS event.
 Consider additional soil excavation depending on the presence of LNAPL in the future in
wells MW-1 and MW-3, and to remove contaminated soil in the vicinity of the former UST
system.

TABLES
Well #Property Owner Property Address /
Owner Mailing Address Owner Address Depth
(ft)Use Distance
(ft)Direction
1*Matthew and Andrea Connell
Todd General Store
3866 Todd Railroad Grade
Rd.
529 Tracy Circle
Boone, NC 28607 205 water supply NA on-site
2*Matthew and Andrea Connell
Todd General Store
3866 Todd Railroad Grade
Rd.
529 Tracy Circle
Boone, NC 28607 205 water supply NA on-site
3*Charles & Barbara Stophel 499 Carter Miller Rd
Todd, NC 28684
PO Box 163
Todd. NC 28684 unknown water supply 250 Northeast
4 Lillian Welch Highland Trail
Todd, NC 28684
PO Box 117
Todd. NC 28684 unknown water supply 250 North-Northeast
5*Lillian Welch 517 Carter Miller Rd.
Todd, NC 28684
PO Box 117
Todd. NC 28685 unknown water supply 400 North-Northeast
6 Charles & Barbara Stophel 246 Byrd Lane
Todd, NC 28284
PO Box 163
Todd. NC 28685 unknown water supply 450 East-Northeast
7*Mary Katherine Parsons 393 Carter Miller Rd.
Todd, NC 28684
393 Carter Miller Rd.
Todd, NC 28684 unknown water supply 750 North-Northeast
8 Ancil & Teresa Parsons Highland Trail
Todd, NC 28684
383 Carter Miller Rd.
Todd, NC 28684 unknown water supply 750 Northeast
9 Ancil & Teresa Parsons Highland Trail
Todd, NC 28684
383 Carter Miller Rd.
Todd, NC 28684 unknown water supply 850 Northeast
10 Douglas & Jason Hill 385 Carter Miller Road
Todd, NC 28684
75 Water Way
Stafford, VA 22556 unknown water supply 950 Northeast
11*Catherine Peterson 416 A Carter Miller Road
Todd, NC 28684
PO Box 1702
Denver, NC 28037 unknown water supply 1,000 Northest
12*Paul Luke Walczak 7807 NC Hwy 194 South
Todd, NC 28684
7807 NC Hwy 194 South
Todd, NC 28684 unknown water supply 800 North
13*Emily Caroline Cox
C/O Jean Cox Young
486 Carter Miller Road
Todd, NC 28684
PO Box 101
Todd, NC 28684 unknown water supply 700 Northeast
14 Harry Cox 498 Carter Miller Road
Todd, NC 28684
PO Box 11
Todd, NC 28684 unknown Water Supply 600 North
15*Paul Luke Walczak 7807 NC Hwy 194 South
Todd, NC 28684
7807 NC Hwy 194 South
Todd, NC 28684 unknown water supply 500 North
16 Charles & Imke Nickelson 552 Carter Miller Road
Todd, NC 28684
2429 Perkins Road
Durham, NC 27705 unknown water supply 400 North
17 Blackburn Memorial Methodist Church 3986 Todd Railroad Grade Rd
Todd, NC 28624
Blackburn Memorial Methodist
Church
Todd, NC 28684
unknown unknown 400 Northwest
18 Myron & Beth Wally NC Hwy 194 South
Todd, NC 28684
11244 Suunto Lane
Cornelius, NC 28031 unknown water supply 600 Northwest
19*Bryanna Lee Cole Glod 7928 NC Hwy 194 South
Todd, NC 28684
104 Hillcrest Ave Unit B
Carrboro, NC 27510 unknown water supply 900 Northwest
20*River Girl Fishing Co 4041 Todd Railroad Grade Rd
Todd, NC 28684
PO Box 133
Todd, NC 28684 unknown unknown 800 Northwest
21 Helen Phillips 4091 Todd Railroad Grade Rd
Todd, NC 28684
PO Box 3397
Boone, NC 28607 unknown water supply 800 Northwest
22 John Wesley & Carolyn Ashburn 273 South Fork Church Road
Todd, NC 28684
PO Box 054
Todd, NC 28684 unknown water supply 700 West
23*River Girl Fishing Co 4021 Todd Railroad Grade Rd
Todd, NC 28684
PO Box 133
Todd, NC 28684 unknown unknown 600 West
24*John Wesley & Carolyn Ashburn Todd Railroad Grade Road
Todd, NC 28684
PO Box 054
Todd, NC 28684 unknown water supply 600 West
25*John Wesley & Carolyn Ashburn Todd Railroad Grade Road
Todd, NC 28684
PO Box 054
Todd, NC 28684 unknown water supply 600 West
26*John Wesley & Carolyn Ashburn 260 South Fork Church Road
Todd, NC 28684
PO Box 054
Todd, NC 28684 unknown water supply 600 West
NCDEQ Incident #24093
TABLE 1
WATER SUPPLY WELL INFORMATION
Todd General Store
3866 Todd Railroad Grade Road
Todd, Ashe County, NC 28684
Page 1 of 2
Well #Property Owner Property Address /
Owner Mailing Address Owner Address Depth
(ft)Use Distance
(ft)Direction
NCDEQ Incident #24093
TABLE 1
WATER SUPPLY WELL INFORMATION
Todd General Store
3866 Todd Railroad Grade Road
Todd, Ashe County, NC 28684
27 Betsy McGuire & John Raymond
Baker
5575 Bigg Hill Road
Todd, NC 28684
3237 Sourwood Ridge Road
Lenior, NC 28645 unknown water supply 450 South
28 South Fork Baptist Church 3899 South Fork Baptist
Church Road
Todd, NC 28684
PO Box 27
Todd, NC 28684 unknown water supply 150 West
29 South Fork Baptist Church
3977 South Fork Baptist
Church Road
Todd, NC 28684
PO Box 27
Todd, NC 28684 unknown unknown 250 West
30*Scott & Gail Rawlings 3977 Todd Railroad Grade Rd
Todd, NC 28684
25112 Lankford Hwy
Cape Charles, VA 23310 NA water supply 400 Northwest
31*McGuire Family LLC 3956 Todd Railroad Grade Rd
Todd, NC 28684
147 Inata Circle
Loudon, TN 37774 NA water supply 400 Northwest
32*Emilie Enzmann 3937 Todd Railroad Grade Rd
Todd, NC 28684
3223 Lakeview Circle S, Unit 3
Ft Pierce, FL 34949 NA unknown 140 Northwest
Notes:
Table based on 2002 receptor survey, with owner information updated (*) February 2020.
Page 2 of 2

MW-1 12/09/2002 2 21.0 6.0-21.0 100.00
MW-2 03/11/2003 2 15.0 5.0-15.0 96.38
MW-3 03/11/2003 2 18.0 8.0-18.0 102.35
MW-4 03/11/2003 2 20 10.0-20.0 103.90
MW-5 03/11/2003 2 5.0 2.0-5.0 89.43
MW-6 04/02/2003 2 40 35.0-40.0 99.14
MW-7 09/25/2003 2 6.9 1.9-6.9 94.94
MW-8 09/25/2003 2 15.7 5.7-15.7 94.77
MW-9 09/25/2003 2 14.2 4.2-14.2 93.75
MW-10 11/17/2003 2 11.7 1.7-11.7 86.49
Notes:
in = Inch
ft-bgs = Feet below ground surface
ft = Feet
TOC = Top of Casing
TOC Elevations not measured
NCDEQ Incident #24093
TABLE 2
MONITORING WELL CONSTRUCTION DETAILS
Todd General Store
3866 Todd Railroad Grade Road
Todd, Ashe County, NC 28684
Well
ID
Date
Installed
TOC
Elevation
(ft)
Depth of
Well
(ft-bgs)
Well Screen
Interval
(ft-bgs)
Well
Diameter
(in)
Well ID
Depth of
Well
(ft bgs)
TOC
Elevation
(ft)
Gauging
Date
Depth to
Groundwater
(ft-toc)
Depth To
LNAPL
(ft-toc)
LNAPL
Thickness
(ft)
Groundwater
Elevation
(ft)
12/8/2003 10.00 ----90.00
2/21/2007 9.99 10.54 0.55 90.48
11/6/2019
5/19/2020 5.83 5.81 0.02 94.19
6/2/2020 5.78 ----94.22
12/8/2003 7.20 ----89.18
11/6/2019 6.61 ----89.77
12/8/2003 14.01 ----88.34
2/21/2007 14.12 12.92 1.20 89.26
11/6/2019 10.75 9.97 0.78 92.27
5/19/2020 9.22 10.00 0.78 93.80
6/2/2020 9.05 8.72 0.33 93.58
10/15/2003 3.10 ----100.80
11/6/2019
12/8/2003 2.40 ----87.03
2/21/2007 2.06 ----87.37
11/6/2019 1.97 ----87.46
12/8/2003 8.80 ----90.34
11/6/2019 7.50 ----91.64
12/8/2003 2.45 ----92.49
2/21/2007 2.13 ----92.81
11/6/2019
12/8/2003 6.35 ----88.42
2/21/2007 6.30 ----88.47
11/6/2019
12/8/2003 6.45 ----87.30
2/21/2007 6.33 ----87.42
11/6/2019
12/8/2003 1.90 ----84.59
11/6/2019 1.79 ----84.70
Notes:
TOC/toc = Top of Casing
ft = feet
ft-bgs = feet below ground surface
ft-toc = feet below top of casing
LNAPL = Light Non-Aqueous Phase Liquid
--- = No LNAPL Detected
Groundwater Elevation = TOC - (Water Level Measurement + (LNAPL Thickness x 0.8581))
NCDEQ Incident #24093
TABLE 3
GROUNDWATER ELEVATION DATA
Todd General Store
3866 Todd Railroad Grade Road
Todd, Ashe County, NC 28684
MW-10 86.49
MW-9 14.2 93.75
11.7
MW-5 89.43
MW-6 99.14
MW-2 96.3815
5
40
Not Measured - Inaccessible
MW-4 20 103.90 Not Measured - Inaccessible
MW-1 21 100.00
MW-3 18 102.35
Not Measured - Not Found
Not Measured - Not Found
MW-8 15.7 94.77
Not Measured - Not Found
MW-7 6.9 94.94
Well ID Date Temperature
(◦C)
Conductivity
(mS/cm)
pH
(s.u.)
ORP
(mV)
DO
(mg/L)
MW-1 6/2/2020 18.01 0.254 5.75 128 4.67
Notes:
°C = degrees Celsius
mS / cm = milliSiemens per centimeter
s.u. = Standard Units
ORP = oxidation reduction potential: mV = millivolts
DO = dissolved oxygen: mg/L = milligrams per liter
NCDEQ Incident #16457
TABLE 4
FIELD PARAMETERS
Todd General Store
3866 Todd Railroad Grade Road
Todd, Ashe County, NC 28615

TABLE 5
GROUNDWATER ANALYTICAL DATA
Todd General Store
3866 Todd Railroad Grade Road
Todd, Ashe County, NC 28684
NCDEQ Incident #24093
Well ID Sample Date
BenzeneEthylbenzeneDiisopropyl etherIsopropylbenzeneMethyl-tert-butyl etherNaphthaleneStyreneToluene1,2,4-Trimethylbenzene1,3,5-TrimethylbenzeneTotal XylenesLeadC9-C22 AromaticsC5-C8 AliphaticsC9-C18 Aliphatics1 600 70 70 20 6 70 600 400 400 500 15 200 400 700
5,000 84,500 70,000 25,000 20,000 6,000 70,000 260,000 28,500 25,000 85,500 15,000 NE NE NE
12/9/2002 1,788 984 ND NR 158 876 NR 8,359 NR NR 7,346 NR 97,610 60,640 NA
2/21/2007
11/6/2019
6/2/2020 <6.2 625 <6.2 54.5 <6.2 412 14.2 930 1,680 562 4,280 NA NA NA NA
3/11/2003 ND ND NR --ND 4.5 --ND ----ND 147 ND ND ND
11/6/2019 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 NA NA NA NA
2/21/2007
11/6/2019
6/2/2020
3/11/2003 ND ND NR --ND 2.6 --ND ----ND 41 ND ND ND
11/6/2019
3/11/2003 ND ND NR --ND 2.6 --ND ----2.0 108 ND ND ND
2/21/2007 1.4 ND NR --ND 5.9 --0.8 ----0.5 NR ND ND ND
11/6/2019 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 NA NA NA NA
4/2/2003 ND ND NR --ND ND --3.1 ----7.3 81 ND ND ND
11/6/2019 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 NA NA NA NA
10/15/2003 ND ND NR --ND ND --ND ----ND 124 112 ND ND
2/21/2007 ND ND NR --ND ND --ND ----ND NR 289 ND ND
11/6/2019
Not Sampled - LNAPL (0.78 feet)
Not Sampled - LNAPL (0.55 ft)
Not Sampled - Inaccessible
Not Sampled - Not Found
Not Sampled - LNAPL (1.2 ft)
MW-4
MW-5
MW-6
MW-7
MW-8
Not Sampled - LNAPL (0.33 feet)
MW-3
2L Standard
GCL
Not Sampled - Inaccessible
MW-2
MW-1
Page 1 of 2

TABLE 5
GROUNDWATER ANALYTICAL DATA
Todd General Store
3866 Todd Railroad Grade Road
Todd, Ashe County, NC 28684
NCDEQ Incident #24093
Well ID Sample Date
BenzeneEthylbenzeneDiisopropyl etherIsopropylbenzeneMethyl-tert-butyl etherNaphthaleneStyreneToluene1,2,4-Trimethylbenzene1,3,5-TrimethylbenzeneTotal XylenesLeadC9-C22 AromaticsC5-C8 AliphaticsC9-C18 Aliphatics1 600 70 70 20 6 70 600 400 400 500 15 200 400 700
5,000 84,500 70,000 25,000 20,000 6,000 70,000 260,000 28,500 25,000 85,500 15,000 NE NE NE
2L Standard
GCL
MW-1
10/15/2003 44.1 3.8 52.8 --217 5.1 --88.2 ----251 101 206 886 ND
2/21/2007 60.3 46.2 NR --ND 334 --43.1 ----86.2 NR 6,920 7,730 ND
11/6/2019
10/15/2003 26.1 19.3 NR --ND ND --4.5 ----63.1 98 283 94 ND
2/21/2007 52.0 61.2 NR --4,042 194 --136.0 ----505.0 NR 1,420 2,420 ND
11/6/2019
12/8/2003 ND ND NR --ND ND --ND ----ND 83 ND ND ND
11/6/2019 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 NA NA NA NA
Notes:
"<#" = Not Detected at or above the laboratory reporting limit NR = not reported
Concentrations are reported in micrograms per liter (µg/L)2L Standards = 15A NCAC 2L .0202 Groundwater Quality Standard
-- not available GCL = Gross Contamination Level
NA = not analyzed Concentrations in bold exceed the 2L Standard
ND = reported as not detected in prior reports LNAPL = Light Non-Aqueous Phase Liquid
NE = not established J = Estimated value between method reporting limit and detection limit
MW-9
MW-10
Not Sampled - Not Found
Not Sampled - Not Found
MW-8
Page 2 of 2

FIGURES
CAD FILE
PREP. BY REV. BY SCALE PROJECT NO.
TITLE
DATE
ASSOCIATES OF NORTH CAROLINA, P.C.
C:\Users\robert.deppensmith\Desktop\CAD REFERENCES\ATC Logo_Full Color_CMYK.jpg
REFERENCE: GOOGLE EARTH PRO EARTH POINT CONVERT
CAD FILE PREP. BY REV. BY SCALE PROJECT NO.
TITLE
DATE
ASSOCIATES OF NORTH CAROLINA, P.C.
C:\Users\robert.deppensmith\Desktop\CAD REFERENCES\ATC Logo_Full Color_CMYK.jpg
EXPLANATION
WATER SUPPLY WELL LOCATION
(REFER TO WSW TABLE)
REFERENCE: ASHE COUNTY, NORTH CAROLINA
GIS MAPPING
01
02
03
04
05
06
27
28
29
30
32
31
17
16
07
08
09
10
11
12
13
14
15
18
19
20
21
23
2422
25 26
x
500' RADIUS
EL
K

C
R
E
E
K
1,000' RADIUS
1,000 GALLON
GASOLINE UST
500 GALLON
GASOLINE UST
TODD'S
GENERAL STORE
MW-4
MW-2
MW-6
MW-1
MW-3
MW-7
MW-5
MW-8
MW-9
MW-10
CAD FILE PREP. BY REV. BY SCALE PROJECT NO.
TITLE
DATE
ASSOCIATES OF NORTH CAROLINA, P.C.
C:\Users\robert.deppensmith\Desktop\CAD REFERENCES\ATC Logo_Full Color_CMYK.jpg
EXPLANATION
MONITORING WELL LOCATION
PROPERTY LINES
1,000 GALLON
GASOLINE UST
500 GALLON
GASOLINE UST
TODD'S
GENERAL STORE
MW-4
MW-2
MW-6
MW-1
MW-3
MW-7
MW-5
MW-8
MW-9
MW-10
CAD FILE PREP. BY REV. BY SCALE PROJECT NO.
TITLE
DATE
ASSOCIATES OF NORTH CAROLINA, P.C.
C:\Users\robert.deppensmith\Desktop\CAD REFERENCES\ATC Logo_Full Color_CMYK.jpg
EXPLANATION
MONITORING WELL LOCATION
GROUNDWATER ELEVATION IN FEET
NOT MEASURED
GROUNDWATER ELEVATION CONTOUR (DASHED
WHERE INFERRED)
80.82
NM
GROUNDWATER FLOW DIRECTION
CNL 92.27
91.64
89.77
87.46
84.70
NM
NM
CNL
92
.
0
9
0
.
0
8
8
.
0
8
6
.
0
8
4
.
0
GROUNDWATER ELEVATIONS MEASURED 11/06/19
PROPERTY LINES
CNL
COULD NOT LOCATECNL
1,000 GALLON
GASOLINE UST
500 GALLON
GASOLINE UST
TODD'S
GENERAL STORE
MW-4
MW-2
MW-6
MW-1
MW-3
MW-7
MW-5
MW-8
MW-9
MW-10
CAD FILE PREP. BY REV. BY SCALE PROJECT NO.
TITLE
DATE
ASSOCIATES OF NORTH CAROLINA, P.C.
C:\Users\robert.deppensmith\Desktop\CAD REFERENCES\ATC Logo_Full Color_CMYK.jpg
EXPLANATION
MONITORING WELL LOCATION
NOT SAMPLEDNS
LNAPL=0.33'
NS
NS
CNL
CNL
1.GROUNDWATER SAMPLES COLLECTED 06/02/2020
2.CONCENTRATIONS SHOW EXCEED 2L STANDARDS
CNL
PROPERTY LINES
COULD NOT LOCATECNL
NS
NS
NS

APPENDIX A

FIELD NOTES
1 6
9:45 Start
10:15 30
10:45 30
11:15 30
11:45 30
12:15 30
12:45 30
13:15 30
13:45 30
14:15 30
14:45 30
15:15 30
15:45 30
16:15 30
16:45 30
17:15 30
17:45 30
PPMmea = Measured VOC concentration from OVA/TVA (PPMv)Total emissions, pounds
Velocity = Measured velocity (fpm)Total emissions, gallons (6.25 lb/gal)
Temp = Measured temperature (0F)
RH = Measured relative humidity (%)
Flow = Actual Flow Volume (cfm)
Specific Humidity = data from psychrometric chart at measured Temp and RH (lb water/lb dry air) (lbW / lbDA)
Water Vapor = % water vapor on a volume basis = (Specific Humidity / 18 lb-mole H2O) / [(1 / 28.84 lb-mole dry air) + (Specific Humidity / 18 lb-mole H2O)]
Qstd = Flow volume on a dry basis at a standard temperature of 680 F = (1-Water Vapor) (Flow) [528 0R / (Temp +460)]
Dry Conc = PPMv VOC on a dry basis = [PPMmea / (1-Water Vapor)]
Response Factor of OVA/TVA meter; 1 if response factor is unknown
Corrected Conc = Dry Conc PPMv VOC corrected by Response Factor = (Dry Conc) (Response Factor)
Mass Conc (mg/m3) = Mass concentration VOC as gasoline dry basis at standard temperature = (Corrected Conc) (128 mg/mg-mole / 24.07 m3/mg-mole)
Mass Conc (lb/ft3) = [Mass Conc (mg/m3)] [(6.243 * 10-8)(lb/ft3)/(mg/m3)]
Mass Removed (lb) = [Mass Conc (lb/ft3)] [Qstd (dscfm)] [Time Interval (min)]
Note: Maximum value for Specific Humidity from Perry's 5th Edition high temperature psychrometric chart was used when data exceeded range of chart. (0.100 lb water per lb dry air)
0.000004 0.04
0.74
0.12
0.010 367 12 1 12 6512.1 2287 180 0.0 449 0.006
11 1 11 59 0.000004 0.04
0.000004 0.04
11.0 2377 178 0.0 466 0.006 0.010 382
0.010 383 11 1 11 6011.2 2388 181 0.0 469 0.006
12 1 12 62 0.000004 0.04
0.000004 0.041111159
11.5 2432 183 0.0 477 0.006 0.010 388
0.010 38210.9 2417 189 0.0 474 0.006
9 1 9 48 0.000003 0.03
0.000003 0.03
8.9 2115 173 0.0 415 0.006 0.010 343
0.010 371 9 1 9 499.1 2321 183 0.0 455 0.006
12 1 12 63 0.000004 0.04
0.000005 0.05
11.7 2297 179 0.0 451 0.006 0.010 369
0.010 375 14 1 14 7513.9 2340 181 0.0 459 0.006
14 1 14 76 0.000005 0.05
0.000005 0.05
14.1 2206 181 0.0 433 0.006 0.010 353
0.010 382 14 1 14 7413.8 2364 176 0.0 464 0.006
12 1 12 66 0.000004 0.05
0.000004 0.06
12.2 2705 187 0.0 531 0.006 0.010 429
0.010 427 13 1 13 6912.9 2678 184 0.0 526 0.006
13.1 2701 178 0.0 530 0.007 0.011 434
12.5 2669
Time (h:m)Delta Time(min)PPMmea
(PPMv)
Velocity
(fpm)
Temp
(0 F)
RH
(%)
13 1 13
AFVR / EFR Data Sheet - Emissions Data & Calculation
Client: ATC Associates - Clt Site: (TF-24093 Todd General) 3866 Todd Railroad Grade Rd, Todd, NC MW Gasoline: 5/19/2020
Technician: Austen Rubenstein Meters: MiniRAE 2000-10.6 eV PID; TESTO 445-Vane, %RH, Temp Response Factor:Stack Dia(in):
Corrected
Conc
(PPMv)
Mass Conc
(mg/m3)
Mass Conc
(lb/ft3)
Mass
Removed
(lb)
Qstd
(dscfm)
Dry
Conc
(PPMv)
Response
Factor
2417 175 0.0 12 64 0.000004 0.05
170 0.0 524 0.007
Flow
(cfm)
Specific
Humidity
(lbW /
lbDA)
Water
Vapor
(vol %)
70 0.000004 0.06
12 63 0.000004 0.05
12.0
11.8 2398 179 0.0
474 0.006 0.010 390 12 1
471 0.006 0.010 385 12 1

APPENDIX B

LABORATORY ANALYTICAL REPORT

#=CL#
June 11, 2020
LIMS USE: FR - CHELSEA HALLEY
LIMS OBJECT ID: 92479902
92479902
Project:
Pace Project No.:
RE:
Chelsea Halley
ATC Group Services
7606 Whitehall Exec Center Dr
Suite 800
Charlotte, NC 28273
Todd General
Dear Chelsea Halley:
Enclosed are the analytical results for sample(s) received by the laboratory on June 02, 2020. The results relate only to the
samples included in this report. Results reported herein conform to the applicable TNI/NELAC Standards and the
laboratory's Quality Manual, where applicable, unless otherwise noted in the body of the report.
The test results provided in this final report were generated by each of the following laboratories within the Pace Network:
• Pace Analytical Services - Charlotte
If you have any questions concerning this report, please feel free to contact me.
Sincerely,
Taylor Ezell
[e-mail]
Project Manager
[phone]
Enclosures
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 1 of 17
#=CP#
CERTIFICATIONS
Pace Project No.:
Project:
92479902
Todd General
Pace Analytical Services Charlotte
9800 Kincey Ave. Ste 100, Huntersville, NC 28078
Louisiana/NELAP Certification # LA170028
North Carolina Drinking Water Certification #: 37706
North Carolina Field Services Certification #: 5342
North Carolina Wastewater Certification #: 12
South Carolina Certification #: 99006001
Florida/NELAP Certification #: E87627
Kentucky UST Certification #: 84
Virginia/VELAP Certification #: 460221
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 2 of 17
#=SS#
SAMPLE SUMMARY
Pace Project No.:
Project:
92479902
Todd General
Lab ID Sample ID Matrix Date Collected Date Received
92479902001 MW-1 Water 06/02/20 11:45 06/02/20 14:00
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 3 of 17
#=SA#
SAMPLE ANALYTE COUNT
Pace Project No.:
Project:
92479902
Todd General
Lab ID Sample ID Method
Analytes
Reported LaboratoryAnalysts
92479902001 MW-1 SM 6200B 72 PASI-CSAS
PASI-C = Pace Analytical Services - Charlotte
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 4 of 17
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92479902
Todd General
Sample:MW-1 Lab ID:92479902001 Collected:06/02/20 11:45 Received:06/02/20 14:00 Matrix:Water
Parameters Results Units DF Prepared Analyzed CAS No.QualMDLPQL
Analytical Method: SM 6200B
Pace Analytical Services - Charlotte
6200B MSV
tert-Amyl Alcohol <506 ug/L 06/10/20 17:15 75-85-4125050612.5
tert-Amylmethyl ether <37.0 ug/L 06/10/20 17:15 994-05-812537.0 12.5
Benzene <3.0 ug/L 06/10/20 17:15 71-43-26.2 3.0 12.5
Bromobenzene <2.7 ug/L 06/10/20 17:15 108-86-16.2 2.7 12.5
Bromochloromethane <3.2 ug/L 06/10/20 17:15 74-97-56.2 3.2 12.5
Bromodichloromethane <2.3 ug/L 06/10/20 17:15 75-27-46.2 2.3 12.5
Bromoform <5.1 ug/L 06/10/20 17:15 75-25-26.2 5.1 12.5
Bromomethane <21.5 ug/L 06/10/20 17:15 74-83-962.5 21.5 12.5
2-Butanone (MEK)<44.9 ug/L 06/10/20 17:15 78-93-3 M162.5 44.9 12.5
tert-Butyl Alcohol <220 ug/L 06/10/20 17:15 75-65-025022012.5
n-Butylbenzene <4.4 ug/L 06/10/20 17:15 104-51-8 M16.2 4.4 12.5
sec-Butylbenzene <3.1 ug/L 06/10/20 17:15 135-98-86.2 3.1 12.5
tert-Butylbenzene <3.1 ug/L 06/10/20 17:15 98-06-66.2 3.1 12.5
tert-Butyl Formate <222 ug/L 06/10/20 17:15 762-75-425022212.5
Carbon tetrachloride <2.9 ug/L 06/10/20 17:15 56-23-56.2 2.9 12.5
Chlorobenzene <2.8 ug/L 06/10/20 17:15 108-90-76.2 2.8 12.5
Chloroethane <7.3 ug/L 06/10/20 17:15 75-00-312.5 7.3 12.5
Chloroform <4.4 ug/L 06/10/20 17:15 67-66-36.2 4.4 12.5
Chloromethane <5.2 ug/L 06/10/20 17:15 74-87-312.5 5.2 12.5
2-Chlorotoluene <2.6 ug/L 06/10/20 17:15 95-49-86.2 2.6 12.5
4-Chlorotoluene <2.6 ug/L 06/10/20 17:15 106-43-46.2 2.6 12.5
1,2-Dibromo-3-chloropropane <4.8 ug/L 06/10/20 17:15 96-12-812.5 4.8 12.5
Dibromochloromethane <5.0 ug/L 06/10/20 17:15 124-48-16.2 5.0 12.5
1,2-Dibromoethane (EDB)<2.9 ug/L 06/10/20 17:15 106-93-46.2 2.9 12.5
Dibromomethane <3.9 ug/L 06/10/20 17:15 74-95-36.2 3.9 12.5
1,2-Dichlorobenzene <3.0 ug/L 06/10/20 17:15 95-50-16.2 3.0 12.5
1,3-Dichlorobenzene <3.1 ug/L 06/10/20 17:15 541-73-16.2 3.1 12.5
1,4-Dichlorobenzene <3.1 ug/L 06/10/20 17:15 106-46-76.2 3.1 12.5
Dichlorodifluoromethane <3.6 ug/L 06/10/20 17:15 75-71-86.2 3.6 12.5
1,1-Dichloroethane <3.0 ug/L 06/10/20 17:15 75-34-36.2 3.0 12.5
1,2-Dichloroethane <3.3 ug/L 06/10/20 17:15 107-06-26.2 3.3 12.5
1,1-Dichloroethene <2.7 ug/L 06/10/20 17:15 75-35-46.2 2.7 12.5
cis-1,2-Dichloroethene <2.6 ug/L 06/10/20 17:15 156-59-26.2 2.6 12.5
trans-1,2-Dichloroethene <3.2 ug/L 06/10/20 17:15 156-60-56.2 3.2 12.5
1,2-Dichloropropane <2.3 ug/L 06/10/20 17:15 78-87-56.2 2.3 12.5
1,3-Dichloropropane <4.3 ug/L 06/10/20 17:15 142-28-96.2 4.3 12.5
2,2-Dichloropropane <3.5 ug/L 06/10/20 17:15 594-20-76.2 3.5 12.5
1,1-Dichloropropene <4.4 ug/L 06/10/20 17:15 563-58-66.2 4.4 12.5
cis-1,3-Dichloropropene <4.5 ug/L 06/10/20 17:15 10061-01-56.2 4.5 12.5
trans-1,3-Dichloropropene <4.9 ug/L 06/10/20 17:15 10061-02-66.2 4.9 12.5
Diisopropyl ether <4.2 ug/L 06/10/20 17:15 108-20-36.2 4.2 12.5
Ethanol <1240 ug/L 06/10/20 17:15 64-17-52500124012.5
Ethylbenzene 625 ug/L 06/10/20 17:15 100-41-46.2 3.0 12.5
Ethyl-tert-butyl ether <47.6 ug/L 06/10/20 17:15 637-92-312547.6 12.5
Hexachloro-1,3-butadiene <15.0 ug/L 06/10/20 17:15 87-68-325.0 15.0 12.5
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 06/11/2020 05:03 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 5 of 17
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92479902
Todd General
Sample:MW-1 Lab ID:92479902001 Collected:06/02/20 11:45 Received:06/02/20 14:00 Matrix:Water
Parameters Results Units DF Prepared Analyzed CAS No.QualMDLPQL
Analytical Method: SM 6200B
Pace Analytical Services - Charlotte
6200B MSV
2-Hexanone <7.6 ug/L 06/10/20 17:15 591-78-662.5 7.6 12.5
Isopropylbenzene (Cumene)54.5 ug/L 06/10/20 17:15 98-82-86.2 3.0 12.5
Methylene Chloride <18.8 ug/L 06/10/20 17:15 75-09-225.0 18.8 12.5
Methyl-tert-butyl ether <5.6 ug/L 06/10/20 17:15 1634-04-46.2 5.6 12.5
Naphthalene 412 ug/L 06/10/20 17:15 91-20-325.0 8.2 12.5
n-Propylbenzene <3.0 ug/L 06/10/20 17:15 103-65-1 M16.2 3.0 12.5
Styrene 14.2 ug/L 06/10/20 17:15 100-42-56.2 3.2 12.5
1,1,1,2-Tetrachloroethane <5.3 ug/L 06/10/20 17:15 630-20-66.2 5.3 12.5
1,1,2,2-Tetrachloroethane <2.4 ug/L 06/10/20 17:15 79-34-56.2 2.4 12.5
Tetrachloroethene <2.9 ug/L 06/10/20 17:15 127-18-46.2 2.9 12.5
Toluene 930 ug/L 06/10/20 17:15 108-88-36.2 2.8 12.5
1,2,3-Trichlorobenzene <9.8 ug/L 06/10/20 17:15 87-61-625.0 9.8 12.5
1,2,4-Trichlorobenzene <5.4 ug/L 06/10/20 17:15 120-82-125.0 5.4 12.5
1,1,1-Trichloroethane <3.5 ug/L 06/10/20 17:15 71-55-66.2 3.5 12.5
1,1,2-Trichloroethane <2.9 ug/L 06/10/20 17:15 79-00-56.2 2.9 12.5
Trichloroethene <2.9 ug/L 06/10/20 17:15 79-01-66.2 2.9 12.5
Trichlorofluoromethane <4.2 ug/L 06/10/20 17:15 75-69-412.5 4.2 12.5
1,2,3-Trichloropropane <3.4 ug/L 06/10/20 17:15 96-18-46.2 3.4 12.5
1,2,4-Trimethylbenzene 1680 ug/L 06/10/20 17:15 95-63-6 M16.2 2.4 12.5
1,3,5-Trimethylbenzene 562 ug/L 06/10/20 17:15 108-67-8 M16.2 2.8 12.5
Vinyl chloride <5.1 ug/L 06/10/20 17:15 75-01-412.5 5.1 12.5
Xylene (Total)4280 ug/L 06/10/20 17:15 1330-20-7 MS12.5 6.2 12.5
m&p-Xylene 3050 ug/L 06/10/20 17:15 179601-23-1 M112.5 5.5 12.5
o-Xylene 1230 ug/L 06/10/20 17:15 95-47-6 M16.2 3.0 12.5
Surrogates
1,2-Dichloroethane-d4 (S)95 %06/10/20 17:15 17060-07-070-130 12.5
4-Bromofluorobenzene (S)96 %06/10/20 17:15 460-00-470-130 12.5
Toluene-d8 (S)97 %06/10/20 17:15 2037-26-570-130 12.5
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 06/11/2020 05:03 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 6 of 17
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92479902
Todd General
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
QC Batch:
QC Batch Method:
Analysis Method:
Analysis Description:
546200
SM 6200B
SM 6200B
6200B MSV
Laboratory:Pace Analytical Services - Charlotte
Associated Lab Samples:92479902001
Parameter Units
Blank
Result
Reporting
Limit Qualifiers
METHOD BLANK:2907695
Associated Lab Samples:92479902001
Matrix:Water
AnalyzedMDL
1,1,1,2-Tetrachloroethane ug/L <0.42 0.50 06/10/20 16:570.42
1,1,1-Trichloroethane ug/L <0.28 0.50 06/10/20 16:570.28
1,1,2,2-Tetrachloroethane ug/L <0.19 0.50 06/10/20 16:570.19
1,1,2-Trichloroethane ug/L <0.23 0.50 06/10/20 16:570.23
1,1-Dichloroethane ug/L <0.24 0.50 06/10/20 16:570.24
1,1-Dichloroethene ug/L <0.22 0.50 06/10/20 16:570.22
1,1-Dichloropropene ug/L <0.35 0.50 06/10/20 16:570.35
1,2,3-Trichlorobenzene ug/L <0.78 2.0 06/10/20 16:570.78
1,2,3-Trichloropropane ug/L <0.27 0.50 06/10/20 16:570.27
1,2,4-Trichlorobenzene ug/L <0.44 2.0 06/10/20 16:570.44
1,2,4-Trimethylbenzene ug/L <0.19 0.50 06/10/20 16:570.19
1,2-Dibromo-3-chloropropane ug/L <0.38 1.0 06/10/20 16:570.38
1,2-Dibromoethane (EDB)ug/L <0.23 0.50 06/10/20 16:570.23
1,2-Dichlorobenzene ug/L <0.24 0.50 06/10/20 16:570.24
1,2-Dichloroethane ug/L <0.26 0.50 06/10/20 16:570.26
1,2-Dichloropropane ug/L <0.18 0.50 06/10/20 16:570.18
1,3,5-Trimethylbenzene ug/L <0.23 0.50 06/10/20 16:570.23
1,3-Dichlorobenzene ug/L <0.25 0.50 06/10/20 16:570.25
1,3-Dichloropropane ug/L <0.34 0.50 06/10/20 16:570.34
1,4-Dichlorobenzene ug/L <0.25 0.50 06/10/20 16:570.25
2,2-Dichloropropane ug/L <0.28 0.50 06/10/20 16:570.28
2-Butanone (MEK)ug/L <3.6 5.0 06/10/20 16:573.6
2-Chlorotoluene ug/L <0.21 0.50 06/10/20 16:570.21
2-Hexanone ug/L <0.60 5.0 06/10/20 16:570.60
4-Chlorotoluene ug/L <0.21 0.50 06/10/20 16:570.21
Benzene ug/L <0.24 0.50 06/10/20 16:570.24
Bromobenzene ug/L <0.22 0.50 06/10/20 16:570.22
Bromochloromethane ug/L <0.26 0.50 06/10/20 16:570.26
Bromodichloromethane ug/L <0.18 0.50 06/10/20 16:570.18
Bromoform ug/L <0.40 0.50 06/10/20 16:570.40
Bromomethane ug/L <1.7 5.0 06/10/20 16:571.7
Carbon tetrachloride ug/L <0.23 0.50 06/10/20 16:570.23
Chlorobenzene ug/L <0.22 0.50 06/10/20 16:570.22
Chloroethane ug/L <0.58 1.0 06/10/20 16:570.58
Chloroform ug/L <0.35 0.50 06/10/20 16:570.35
Chloromethane ug/L <0.42 1.0 06/10/20 16:570.42
cis-1,2-Dichloroethene ug/L <0.21 0.50 06/10/20 16:570.21
cis-1,3-Dichloropropene ug/L <0.36 0.50 06/10/20 16:570.36
Dibromochloromethane ug/L <0.40 0.50 06/10/20 16:570.40
Dibromomethane ug/L <0.31 0.50 06/10/20 16:570.31
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 06/11/2020 05:03 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 7 of 17
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92479902
Todd General
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
Parameter Units
Blank
Result
Reporting
Limit Qualifiers
METHOD BLANK:2907695
Associated Lab Samples:92479902001
Matrix:Water
AnalyzedMDL
Dichlorodifluoromethane ug/L <0.28 0.50 06/10/20 16:570.28
Diisopropyl ether ug/L <0.33 0.50 06/10/20 16:570.33
Ethanol ug/L <98.9 200 06/10/20 16:5798.9
Ethyl-tert-butyl ether ug/L <3.8 10.0 06/10/20 16:573.8
Ethylbenzene ug/L <0.24 0.50 06/10/20 16:570.24
Hexachloro-1,3-butadiene ug/L <1.2 2.0 06/10/20 16:571.2
Isopropylbenzene (Cumene)ug/L <0.24 0.50 06/10/20 16:570.24
m&p-Xylene ug/L <0.44 1.0 06/10/20 16:570.44
Methyl-tert-butyl ether ug/L <0.44 0.50 06/10/20 16:570.44
Methylene Chloride ug/L <1.5 2.0 06/10/20 16:571.5
n-Butylbenzene ug/L <0.35 0.50 06/10/20 16:570.35
n-Propylbenzene ug/L <0.24 0.50 06/10/20 16:570.24
Naphthalene ug/L <0.66 2.0 06/10/20 16:570.66
o-Xylene ug/L <0.24 0.50 06/10/20 16:570.24
sec-Butylbenzene ug/L <0.25 0.50 06/10/20 16:570.25
Styrene ug/L <0.26 0.50 06/10/20 16:570.26
tert-Amyl Alcohol ug/L <40.5 100 06/10/20 16:5740.5
tert-Amylmethyl ether ug/L <3.0 10.0 06/10/20 16:573.0
tert-Butyl Alcohol ug/L <17.6 20.0 06/10/20 16:5717.6
tert-Butyl Formate ug/L <17.8 20.0 06/10/20 16:5717.8
tert-Butylbenzene ug/L <0.25 0.50 06/10/20 16:570.25
Tetrachloroethene ug/L <0.23 0.50 06/10/20 16:570.23
Toluene ug/L <0.23 0.50 06/10/20 16:570.23
trans-1,2-Dichloroethene ug/L <0.26 0.50 06/10/20 16:570.26
trans-1,3-Dichloropropene ug/L <0.39 0.50 06/10/20 16:570.39
Trichloroethene ug/L <0.23 0.50 06/10/20 16:570.23
Trichlorofluoromethane ug/L <0.34 1.0 06/10/20 16:570.34
Vinyl chloride ug/L <0.41 1.0 06/10/20 16:570.41
Xylene (Total)ug/L <0.50 1.0 06/10/20 16:570.50
1,2-Dichloroethane-d4 (S)%97 70-130 06/10/20 16:57
4-Bromofluorobenzene (S)%96 70-130 06/10/20 16:57
Toluene-d8 (S)%99 70-130 06/10/20 16:57
Parameter Units
LCS
Result
% Rec
Limits Qualifiers% RecConc.
2907696LABORATORY CONTROL SAMPLE:
LCSSpike
1,1,1,2-Tetrachloroethane ug/L 50.150 100 60-140
1,1,1-Trichloroethane ug/L 46.050 92 60-140
1,1,2,2-Tetrachloroethane ug/L 48.850 98 60-140
1,1,2-Trichloroethane ug/L 49.350 99 60-140
1,1-Dichloroethane ug/L 45.650 91 60-140
1,1-Dichloroethene ug/L 47.350 95 60-140
1,1-Dichloropropene ug/L 47.450 95 60-140
1,2,3-Trichlorobenzene ug/L 55.150 110 60-140
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 06/11/2020 05:03 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 8 of 17
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92479902
Todd General
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
Parameter Units
LCS
Result
% Rec
Limits Qualifiers% RecConc.
2907696LABORATORY CONTROL SAMPLE:
LCSSpike
1,2,3-Trichloropropane ug/L 46.050 92 60-140
1,2,4-Trichlorobenzene ug/L 54.950 110 60-140
1,2,4-Trimethylbenzene ug/L 49.650 99 60-140
1,2-Dibromo-3-chloropropane ug/L 54.750 109 60-140
1,2-Dibromoethane (EDB)ug/L 51.650 103 60-140
1,2-Dichlorobenzene ug/L 52.750 105 60-140
1,2-Dichloroethane ug/L 41.350 83 60-140
1,2-Dichloropropane ug/L 49.350 99 60-140
1,3,5-Trimethylbenzene ug/L 50.750 101 60-140
1,3-Dichlorobenzene ug/L 53.050 106 60-140
1,3-Dichloropropane ug/L 48.450 97 60-140
1,4-Dichlorobenzene ug/L 51.150 102 60-140
2,2-Dichloropropane ug/L 48.650 97 60-140
2-Butanone (MEK)ug/L 105100 105 60-140
2-Chlorotoluene ug/L 49.550 99 60-140
2-Hexanone ug/L 104100 104 60-140
4-Chlorotoluene ug/L 49.350 99 60-140
Benzene ug/L 48.750 97 60-140
Bromobenzene ug/L 50.750 101 60-140
Bromochloromethane ug/L 50.050 100 60-140
Bromodichloromethane ug/L 49.150 98 60-140
Bromoform ug/L 51.350 103 60-140
Bromomethane ug/L 46.750 93 60-140
Carbon tetrachloride ug/L 49.550 99 60-140
Chlorobenzene ug/L 49.650 99 60-140
Chloroethane ug/L 30.350 61 60-140
Chloroform ug/L 43.450 87 60-140
Chloromethane ug/L 43.750 87 60-140
cis-1,2-Dichloroethene ug/L 44.950 90 60-140
cis-1,3-Dichloropropene ug/L 50.250 100 60-140
Dibromochloromethane ug/L 50.550 101 60-140
Dibromomethane ug/L 50.950 102 60-140
Dichlorodifluoromethane ug/L 39.850 80 60-140
Diisopropyl ether ug/L 48.050 96 60-140
Ethanol ug/L 24002000 120 60-140
Ethyl-tert-butyl ether ug/L 93.5100 93 60-140
Ethylbenzene ug/L 46.650 93 60-140
Hexachloro-1,3-butadiene ug/L 53.250 106 60-140
Isopropylbenzene (Cumene)ug/L 50.750 101 60-140
m&p-Xylene ug/L 93.2100 93 60-140
Methyl-tert-butyl ether ug/L 47.450 95 60-140
Methylene Chloride ug/L 43.450 87 60-140
n-Butylbenzene ug/L 51.450 103 60-140
n-Propylbenzene ug/L 47.450 95 60-140
Naphthalene ug/L 54.950 110 60-140
o-Xylene ug/L 48.550 97 60-140
sec-Butylbenzene ug/L 50.350 101 60-140
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 06/11/2020 05:03 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 9 of 17
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92479902
Todd General
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
Parameter Units
LCS
Result
% Rec
Limits Qualifiers% RecConc.
2907696LABORATORY CONTROL SAMPLE:
LCSSpike
Styrene ug/L 52.450 105 60-140
tert-Amyl Alcohol ug/L 11401000 114 60-140
tert-Amylmethyl ether ug/L 97.4100 97 60-140
tert-Butyl Alcohol ug/L 505500 101 60-140
tert-Butyl Formate ug/L 412400 103 60-140
tert-Butylbenzene ug/L 43.550 87 60-140
Tetrachloroethene ug/L 51.750 103 60-140
Toluene ug/L 46.750 93 60-140
trans-1,2-Dichloroethene ug/L 45.950 92 60-140
trans-1,3-Dichloropropene ug/L 50.650 101 60-140
Trichloroethene ug/L 51.450 103 60-140
Trichlorofluoromethane ug/L 35.650 71 60-140
Vinyl chloride ug/L 53.450 107 60-140
Xylene (Total)ug/L 142150 94 60-140
1,2-Dichloroethane-d4 (S)%90 70-130
4-Bromofluorobenzene (S)%100 70-130
Toluene-d8 (S)%99 70-130
Parameter Units
MS
Result
% Rec
Limits Qual% RecConc.
2908868MATRIX SPIKE & MATRIX SPIKE DUPLICATE:
MSSpike
Result
92479902001
2908869
MSD
Result
MSD
% Rec RPD RPD
Max
MSDMS
Spike
Conc.
1,1,1,2-Tetrachloroethane ug/L 250 97 60-140100 3 30250<5.3 243 251
1,1,1-Trichloroethane ug/L 250 96 60-14096 1 30250<3.5 239 240
1,1,2,2-Tetrachloroethane ug/L 250 90 60-14093 4 30250<2.4 224 234
1,1,2-Trichloroethane ug/L 250 91 60-14094 3 30250<2.9 228 234
1,1-Dichloroethane ug/L 250 95 60-14098 3 30250<3.0 239 246
1,1-Dichloroethene ug/L 250 98 60-140104 7 30250<2.7 245 261
1,1-Dichloropropene ug/L 250 96 60-140100 4 30250<4.4 240 249
1,2,3-Trichlorobenzene ug/L 250 85 60-14094 9 30250<9.8 214 234
1,2,3-Trichloropropane ug/L 250 100 60-140101 1 30250<3.4 251 253
1,2,4-Trichlorobenzene ug/L 250 90 60-14097 7 30250<5.4 226 242
1,2,4-Trimethylbenzene ug/L E,M125030860-140363 5 30250168024502580
1,2-Dibromo-3-
chloropropane ug/L 250 91 60-14099 8 30250<4.8 228 247
1,2-Dibromoethane (EDB)ug/L 250 99 60-140101 3 30250<2.9 246 253
1,2-Dichlorobenzene ug/L 250 99 60-140103 4 30250<3.0 248 259
1,2-Dichloroethane ug/L 250 82 60-14083 1 30250<3.3 205 207
1,2-Dichloropropane ug/L 250 101 60-140107 6 30250<2.3 254 268
1,3,5-Trimethylbenzene ug/L M125018660-140213 6 3025056210301090
1,3-Dichlorobenzene ug/L 250 100 60-140105 5 30250<3.1 249 263
1,3-Dichloropropane ug/L 250 94 60-14097 3 30250<4.3 235 241
1,4-Dichlorobenzene ug/L 250 96 60-140101 5 30250<3.1 241 252
2,2-Dichloropropane ug/L 250 95 60-14090 6 30250<3.5 238 224
2-Butanone (MEK)ug/L M150013960-140150 7 30500<44.9 697 748
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.Date: 06/11/2020 05:03 PM
Pace Analytical Services, LLC
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Huntersville, NC 28078
[phone]
Page 10 of 17
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92479902
Todd General
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
Parameter Units
MS
Result
% Rec
Limits Qual% RecConc.
2908868MATRIX SPIKE & MATRIX SPIKE DUPLICATE:
MSSpike
Result
92479902001
2908869
MSD
Result
MSD
% Rec RPD RPD
Max
MSDMS
Spike
Conc.
2-Chlorotoluene ug/L 250 117 60-140112 4 30250<2.6 291 281
2-Hexanone ug/L 500 94 60-14097 3 30500<7.6 471 484
4-Chlorotoluene ug/L 250 91 60-14096 5 30250<2.6 229 240
Benzene ug/L 250 97 60-140100 3 30250<3.0 242 249
Bromobenzene ug/L 250 99 60-140103 5 30250<2.7 247 259
Bromochloromethane ug/L 250 98 60-140102 3 30250<3.2 246 254
Bromodichloromethane ug/L 250 95 60-14099 4 30250<2.3 238 248
Bromoform ug/L 250 89 60-14093 4 30250<5.1 223 232
Bromomethane ug/L 250 75 60-14098 27 30250<21.5 187 245
Carbon tetrachloride ug/L 250 97 60-140100 2 30250<2.9 243 249
Chlorobenzene ug/L 250 99 60-140103 4 30250<2.8 247 257
Chloroethane ug/L 250 84 60-14087 3 30250<7.3 211 218
Chloroform ug/L 250 92 60-14092 0 30250<4.4 230 230
Chloromethane ug/L 250 79 60-14086 8 30250<5.2 199 215
cis-1,2-Dichloroethene ug/L 250 93 60-14096 4 30250<2.6 232 241
cis-1,3-Dichloropropene ug/L 250 93 60-14097 4 30250<4.5 233 243
Dibromochloromethane ug/L 250 93 60-14098 5 30250<5.0 232 244
Dibromomethane ug/L 250 97 60-140101 3 30250<3.9 243 252
Dichlorodifluoromethane ug/L 250 75 60-14080 6 30250<3.6 187 199
Diisopropyl ether ug/L 250 98 60-140103 5 30250<4.2 246 258
Ethanol ug/L 10000 111 60-140113 3 3010000<1240 11100 11300
Ethyl-tert-butyl ether ug/L 500 92 60-14097 5 30500<47.6 460 484
Ethylbenzene ug/L 250 131 60-140138 2 30250625953971
Hexachloro-1,3-butadiene ug/L 250 92 60-14099 8 30250<15.0 230 248
Isopropylbenzene(Cumene)ug/L 250 107 60-140112 3 3025054.5 323 334
m&p-Xylene ug/L M150018460-140196 2 30500305039604020
Methyl-tert-butyl ether ug/L 250 94 60-14095 1 30250<5.6 235 238
Methylene Chloride ug/L 250 97 60-140100 4 30250<18.8 242 251
n-Butylbenzene ug/L M125017860-140189 6 30250<4.4 446 472
n-Propylbenzene ug/L M125020660-140217 6 30250<3.0 514 544
Naphthalene ug/L 250 92 60-140111 7 30250412644690
o-Xylene ug/L M125016760-140174 1 30250123016501670
sec-Butylbenzene ug/L 250 102 60-140108 6 30250<3.1 255 270
Styrene ug/L 250 103 60-140106 3 3025014.2 271 280
tert-Amyl Alcohol ug/L 5000 101 60-140103 2 305000<506 5050 5170
tert-Amylmethyl ether ug/L 500 95 60-14097 2 30500<37.0 475 484
tert-Butyl Alcohol ug/L 2500 101 60-140107 6 302500<220 2520 2670
tert-Butyl Formate ug/L 2000 62 60-14064 4 302000<222 1240 1290
tert-Butylbenzene ug/L 250 83 60-14088 5 30250<3.1 207 219
Tetrachloroethene ug/L 250 101 60-140104 3 30250<2.9 252 261
Toluene ug/L 250 101 60-14092 2 3025093011801160
trans-1,2-Dichloroethene ug/L 250 96 60-140100 4 30250<3.2 239 249
trans-1,3-Dichloropropene ug/L 250 91 60-14095 4 30250<4.9 228 238
Trichloroethene ug/L 250 103 60-140106 3 30250<2.9 257 264
Trichlorofluoromethane ug/L 250 85 60-14089 4 30250<4.2 213 222
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.Date: 06/11/2020 05:03 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 11 of 17
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92479902
Todd General
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
Parameter Units
MS
Result
% Rec
Limits Qual% RecConc.
2908868MATRIX SPIKE & MATRIX SPIKE DUPLICATE:
MSSpike
Result
92479902001
2908869
MSD
Result
MSD
% Rec RPD RPD
Max
MSDMS
Spike
Conc.
Vinyl chloride ug/L 250 105 60-140111 6 30250<5.1 261 276
Xylene (Total)ug/L MS75017860-140189 1 30750428056105690
1,2-Dichloroethane-d4 (S)%92 70-13093
4-Bromofluorobenzene (S)%98 70-13097
Toluene-d8 (S)%98 70-13097
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.Date: 06/11/2020 05:03 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 12 of 17
#=QL#
QUALIFIERS
Pace Project No.:
Project:
92479902
Todd General
DEFINITIONS
DF - Dilution Factor, if reported, represents the factor applied to the reported data due to dilution of the sample aliquot.
ND - Not Detected at or above adjusted reporting limit.
TNTC - Too Numerous To Count
J - Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit.
MDL - Adjusted Method Detection Limit.
PQL - Practical Quantitation Limit.
RL - Reporting Limit - The lowest concentration value that meets project requirements for quantitative data with known precision and
bias for a specific analyte in a specific matrix.
S - Surrogate
1,2-Diphenylhydrazine decomposes to and cannot be separated from Azobenzene using Method 8270. The result for each analyte is
a combined concentration.
Consistent with EPA guidelines, unrounded data are displayed and have been used to calculate % recovery and RPD values.
LCS(D) - Laboratory Control Sample (Duplicate)
MS(D) - Matrix Spike (Duplicate)
DUP - Sample Duplicate
RPD - Relative Percent Difference
NC - Not Calculable.
SG - Silica Gel - Clean-Up
U - Indicates the compound was analyzed for, but not detected.
Acid preservation may not be appropriate for 2 Chloroethylvinyl ether.
A separate vial preserved to a pH of 4-5 is recommended in SW846 Chapter 4 for the analysis of Acrolein and Acrylonitrile by EPAMethod 8260.
N-Nitrosodiphenylamine decomposes and cannot be separated from Diphenylamine using Method 8270. The result reported for
each analyte is a combined concentration.
Pace Analytical is TNI accredited. Contact your Pace PM for the current list of accredited analytes.
TNI - The NELAC Institute.
ANALYTE QUALIFIERS
Analyte concentration exceeded the calibration range. The reported result is estimated.E
Matrix spike recovery exceeded QC limits. Batch accepted based on laboratory control sample (LCS) recovery.M1
Analyte recovery in the matrix spike was outside QC limits for one or more of the constituent analytes used in the
calculated result.MS
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 06/11/2020 05:03 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 13 of 17
#=CR#
QUALITY CONTROL DATA CROSS REFERENCE TABLE
Pace Project No.:
Project:
92479902
Todd General
Lab ID Sample ID QC Batch Method QC Batch Analytical Method
Analytical
Batch
92479902001 546200MW-1 SM 6200B
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 06/11/2020 05:03 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 14 of 17
06/02/2020 02:41 PM
9800 Kincey Ave., Suite 100
Huntersville, NC 28078
[phone]
SAMPLE ACKNOWLEDGMENT
LIMS USE: SAF
LIMS OBJECT ID: 92479902
Please contact your project manager if you recognize any discrepancy in this form or have any questions about your project.
Confidentiality Statement: The Parties agree that they will take all reasonable precautions to prevent the unauthorized disclosure of any proprietary or
confidential information of each other and that they will not disclose such information except to those employees, subcontractors, or agents who have
expressly agreed to maintain confidentiality.
Pace Project Manager:
Pace Analytical Project ID:
Samples Received:
Estimated Completion:
Taylor Ezell
June 09, 2020
Client Project ID:
Client PO#:
Samples Submitted By:
Todd General Phone [phone]
[e-mail]
ATC Group Services, LLC - Charlotte
92479902
June 2, 2020 02:00 PM
CC:Chelsea Halley
Customer Sample ID
Pace Analytical
Lab ID Matrix
Date/Time
Collected Method
92479902001 Water 06/02/20 11:45 6200B MSVMW-1
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06/02/2020 02:41 PM
9800 Kincey Ave., Suite 100
Huntersville, NC 28078
[phone]
SAMPLE ACKNOWLEDGMENT
LIMS USE: SAF
LIMS OBJECT ID: 92479902
Please contact your project manager if you recognize any discrepancy in this form or have any questions about your project.
Customer Sample ID Method
Analyte List
Compound UnitsLimit
Reporting
6200B MSVMW-1 1,1-Dichloroethane 0.5 ug/L
1,1-Dichloroethene 0.5 ug/L
1,1-Dichloropropene 0.5 ug/L
1,1,1-Trichloroethane 0.5 ug/L
1,1,2-Trichloroethane 0.5 ug/L
1,1,1,2-Tetrachloroethane 0.5 ug/L
1,1,2,2-Tetrachloroethane 0.5 ug/L
1,2,4-Trichlorobenzene 2 ug/L
1,2-Dichlorobenzene 0.5 ug/L
1,2-Dibromo-3-chloropropane 1 ug/L
1,2-Dichloroethane 0.5 ug/L
1,2-Dibromoethane (EDB)0.5 ug/L
1,2-Dichloropropane 0.5 ug/L
1,2,4-Trimethylbenzene 0.5 ug/L
1,2,3-Trichlorobenzene 2 ug/L
1,2,3-Trichloropropane 0.5 ug/L
1,3-Dichlorobenzene 0.5 ug/L
1,3-Dichloropropane 0.5 ug/L
1,3,5-Trimethylbenzene 0.5 ug/L
1,4-Dichlorobenzene 0.5 ug/L
2,2-Dichloropropane 0.5 ug/L
2-Chlorotoluene 0.5 ug/L
4-Chlorotoluene 0.5 ug/L
Ethanol 200 ug/L
Bromochloromethane 0.5 ug/L
Benzene 0.5 ug/L
Bromobenzene 0.5 ug/L
Bromodichloromethane 0.5 ug/L
Bromomethane 5 ug/L
Bromoform 0.5 ug/L
cis-1,2-Dichloroethene 0.5 ug/L
cis-1,3-Dichloropropene 0.5 ug/L
Carbon tetrachloride 0.5 ug/L
Chlorobenzene 0.5 ug/L
Chloroethane 1 ug/L
Chloroform 0.5 ug/L
Chloromethane 1 ug/L
Dibromochloromethane 0.5 ug/L
Dichlorodifluoromethane 0.5 ug/L
Diisopropyl ether 0.5 ug/L
Dibromomethane 0.5 ug/L
Ethylbenzene 0.5 ug/L
Ethyl-tert-butyl ether 10 ug/L
Hexachloro-1,3-butadiene 2 ug/L
Isopropylbenzene (Cumene)0.5 ug/L
Methylene Chloride 2 ug/L
Methyl-tert-butyl ether 0.5 ug/L
m&p-Xylene 1 ug/L
Naphthalene 2 ug/L
n-Butylbenzene 0.5 ug/L
n-Propylbenzene 0.5 ug/L
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06/02/2020 02:41 PM
9800 Kincey Ave., Suite 100
Huntersville, NC 28078
[phone]
SAMPLE ACKNOWLEDGMENT
LIMS USE: SAF
LIMS OBJECT ID: 92479902
Please contact your project manager if you recognize any discrepancy in this form or have any questions about your project.
Customer Sample ID Method
Analyte List
Compound UnitsLimit
Reporting
o-Xylene 0.5 ug/L
sec-Butylbenzene 0.5 ug/L
Styrene 0.5 ug/L
trans-1,2-Dichloroethene 0.5 ug/L
trans-1,3-Dichloropropene 0.5 ug/L
tert-Amylmethyl ether 10 ug/L
tert-Amyl Alcohol 100 ug/L
tert-Butyl Alcohol 20 ug/L
Tetrachloroethene 0.5 ug/L
Toluene 0.5 ug/L
Trichloroethene 0.5 ug/L
Trichlorofluoromethane 1 ug/L
tert-Butylbenzene 0.5 ug/L
Xylene (Total)1 ug/L
tert-Butyl Formate 20 ug/L
Vinyl chloride 1 ug/L
2-Butanone (MEK)5 ug/L
2-Hexanone 5 ug/L
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