WA-1034_12709_CA_RPTS_20200121

3502 Hayes Road • Monroe, North Carolina 28110
113 West Firetower Road, Suite G • Winterville, North Carolina 28590
Phone [phone] • [phone] • Fax [phone]

January 22, 2020

Ms. Carrie Stone
North Carolina Department of
Environmental Quality
Washington Regional Office
943 Washington Square Mall
Washington, North Carolina 27889

Re: Ground Water Monitoring Report
January 2020
Ethco Service Station
34970 US Highway 264
Engelhard, Hyde County
North Carolina
Facility ID No.: 00-2-000017866
Incident No.: 12709/38758
GRI Project No. 2911

Dear Ms. Stone,

Please find enclosed the referenced report with CD for the above mentioned site.
If you have any questions, please contact William Regenthal at 704-845-4010.

Sincerely,
Geological Resources, Inc.
Leslie Maxtone-Graham
Administrative Assistant

Enclosure

Cc: Jay & Randy Etheridge; Etheridge Oil & Gas Company, file

3502 Hayes Road • Monroe, North Carolina 28110
113 West Firetower Road, Suite G • Winterville, North Carolina 28590
Phone [phone] • [phone] • Fax [phone]
Ground Water Monitoring Report
January 2020
Ethco Service Station
34970 US Highway 264
Engelhard, Hyde County
North Carolina
Facility ID Number: 00-2-000017866
Incident Number: 12709/38758
GRI Project Number: 2911

Prepared for:

Etheridge Oil and Gas, Inc.
Post Office Box 65
Engelhard, North Carolina 27824

January 21, 2020

William Regenthal, P. G.
Project Manager
Matthew Schroeder, P.G.
Report Writer

___________________________________________________________________________________________
Prepared by: Geological Resources, Inc. Ground Water Monitoring Report
Prepared on: January 21, 2020 Ethco Service Station
Project Manager: William Regenthal, P. G. GRI Project No. 2911
i
SITE INFORMATION
1. Site Identification
 Ethco Service Station (Facility ID 00-2-000017866)
 Incident Number 12709/38758 – Intermediate (I140D)
 Location of Source Area: 34970 US Highway 264
Engelhard, NC 27824
Hyde County
35.508034°N, 75.999993°W (Topographical Map)
2. Information about Contacts Associated with the Leaking UST System

UST Owner
T.J. Etheridge, Jr.
Post Office Box 65
Engelhard, NC 27824
[e-mail]
252-925-4301

UST Operator
T.J. Etheridge, Jr.
Post Office Box 65
Engelhard, NC 27824
[e-mail]
252-925-4301

Property Owner
Tom Cat Capital, LLC
Post Office Box 246
Engelhard, NC 27824
Email Unknown
Phone No. Unknown

Property Occupant
Ethco Service Station
34970 US Highway 264
Engelhard, NC 27824
[e-mail]
252-925-4301

Consultant/Contractor
Geological Resources, Inc.
3502 Hayes Road
Monroe, NC 28110
[e-mail]
704-845-4010

Analytical Laboratory
SGS North America, Inc.
4405 Vineland Road, Suite C-15
Orlando, FL 32811
State Certification No. 573
615-758-5858
3. Information about Release
 A release was confirmed on June 21, 1994 and UST Incident #12709 was issued. A second release
was confirmed during March 2019 UST closure activities.
 An unknown amount of product was released from the leaking UST System
 One 12,000-gallon gasoline UST was removed from the site on March 27, 2019. A former UST
system consisting of one 1,000-gallon diesel, one 1,000-gallon gasoline and two 2,000-gallon
gasoline USTs was removed from the site in June 1994

___________________________________________________________________________________________
Prepared by: Geological Resources, Inc. Ground Water Monitoring Report
Prepared on: January 21, 2020 Ethco Service Station
Project Manager: William Regenthal, P. G. GRI Project No. 2911
ii
EXECUTIVE SUMMARY
Ethco Service Station is located at 34970 US Highway 264 in Engelhard, Hyde County, North Carolina. The
site is currently owned by Tom Cat Capital, LLC and is operated by Ethco Service Station as a petroleum
retail facility, automotive service center, bulk petroleum storage and convenience store. On June 21,
1994, a release was confirmed during the closure of a former UST system. Incident Number 12709 was
issued for the release. A release was confirmed on April 8, 2019, upon receipt of the laboratory report
for soil samples collected during the March 2019 UST closure activities. One 12,000-gallon gasoline UST
was removed from the site on March 27, 2019. A former UST system consisting of one 1,000-gallon diesel,
one 1,000-gallon gasoline and two 2,000-gallon gasoline USTs was removed from the site in June 1994.
The adjoining properties are a mixture of residential and commercial properties. According to the
information determined during receptor survey activities, five water supply wells are located within 1,500
feet of the site. None of the water supply wells are currently active or located within 250 feet of the site.
Municipal water is available to the site or surrounding properties. Far Creek Canal is located
approximately 130 feet north of the site.

A Comprehensive Site Assessment was completed in March 1999; a CSA Addendum was completed in
March 2000. A Corrective Action Plan proposing natural attenuation supported by Aggressive Fluid-Vapor
Recovery (AFVR) and/or High Vacuum Dual Phase Extraction (HVDPE) was submitted to NCDEQ on
February 16, 2001.

On January 6, 2020, four Type II monitoring wells and one recovery well were gauged, purged and
sampled. No free product was observed in the monitoring wells prior to sampling. The Maximum
Allowable Concentrations (MACs) as specified in T15A NCAC 2L.0202 were below the reported
concentrations of individual BTEX constituents, MTBE, naphthalene, isopropylbenzene, n-propylbenzene,
n-butylbenzene, IPE, 1,3,5-trimethylbenzene and/or 1,2,4-trimethylbenzene reported in the ground
water samples collected from MW-1, MW-2, MW-7 and RW-1. All of the reported contaminant
concentrations were below the Gross Contamination Levels. The 2B Surface Water Standards times a
factor of ten were below the concentrations of benzene and/or toluene reported in the ground water
samples collected from MW-1, MW-2, MW-7 and RW-1.

The total contaminant mass at the site has decreased approximately 64.6% between the April 2010 and
January 2020 sampling events.

Based on the above information, the site risk classification should remain as Intermediate. Semi-annual
ground water sampling activities should continue at the site. The next sampling event is tentatively
scheduled for July 2020 and should include an evaluation of natural attenuation parameters. Additionally,
AFVR events could be conducted at the site in order to aid in contaminant reduction and boost natural
attenuation at the site.

___________________________________________________________________________________________
Prepared by: Geological Resources, Inc. Ground Water Monitoring Report
Prepared on: January 21, 2020 Ethco Service Station
Project Manager: William Regenthal, P. G. GRI Project No. 2911

TABLE OF CONTENTS
SITE INFORMATION ............................................................................................................................ i
EXECUTIVE SUMMARY ....................................................................................................................... ii
1.0 SITE HISTORY AND CHARACTERIZATION ...................................................................................1
2.0 PRESENTATION OF CURRENT SITE ASSESSMENT INFORMATION/ COMPARISON TO HISTORICAL
ASSESSMENT INFORMATION ...................................................................................................2
3.0 FREE PRODUCT REMOVAL ........................................................................................................4
4.0 NATURAL ATTENUATION / NATURAL SOURCE ZONE DEPLETION STATUS ..................................4
5.0 CONCLUSIONS .........................................................................................................................4
6.0 LIMITATIONS ...........................................................................................................................4
7.0 STATEMENTS AND CERTIFICATION ...........................................................................................5

FIGURES
Figure 1: Site Location Map
Figure 2: Site Vicinity Map
Figure 3: Site Map
Figure 4: Water Table Surface Map
Figure 5: Ground Water Quality Map
Figure 6: Estimated Contaminant Mass Map

TABLES
Table 1: UST Owner and Operator Information
Table 2: UST System Information
Table 3: Water Supply Well Information
Table 4: Adjacent Property Owner Information
Table 5: Well Construction and Gauging Information
Table 6: Summary of Ground Water Sample Analytical Results

APPENDICES
Appendix A: State Correspondence
Appendix B: Laboratory Report – Ground Water Samples
Appendix C: Contaminant Mass Calculations

___________________________________________________________________________________________
Prepared by: Geological Resources, Inc. Ground Water Monitoring Report
Prepared on: January 21, 2020 Ethco Service Station
Project Manager: William Regenthal, P. G. GRI Project No. 2911
1
1.0 SITE HISTORY AND CHARACTERIZATION
Geological Resources, Inc. (GRI) presents the results of the January 2020 monitoring well installation and
ground water sampling event at the Ethco Service Station site; located at 34970 US Highway 264 in
Engelhard, Hyde County, North Carolina (Figure 1). These activities were conducted in accordance with
GRI Proposal No. 19-623, which was submitted to the North Carolina Department of Environmental
Quality (NCDEQ) on November 20, 2019, and was approved as Task Authorization No. 12709-17 on
November 25, 2019. NCDEQ correspondence associated with the incident is included as Appendix A.

The site is currently owned by Tom Cat Capital, LLC and is operated by Ethco Service Station as a petroleum
retail facility, automotive service center, bulk petroleum storage and convenience store. According to
available information, one 12,000-gallon gasoline UST was removed from the site on March 27, 2019. A
former UST system consisting of one 1,000-gallon diesel, one 1,000-gallon gasoline and two 2,000-gallon
gasoline USTs was removed from the site in June 1994. Incident Number 12709 was issued by NCDEQ
following the June 1994 UST closure. UST owner/operator information and UST system information are
included as Tables 1 and 2, respectively. The Registered Tank Report is shown below:

The site and surrounding area is a mixture of residential and commercial properties. The site contains
one building and is primarily capped with concrete. The overall topography at the site is relatively flat.
The closest surface water body is Far Creek Canal which is located approximately 130 feet north of the
site. Thirteen Type II monitoring wells (MW-1 through MW-5, MW-7 through MW-13 and GMW-1), one
Type III monitoring well (MWD-6) and one recovery well (RW-1) were installed at the site during previous
ground water assessment and corrective action activities.

On April 28, 2010, GRI personnel conducted a receptor survey at the site. Five water supply wells were
identified within a 1,500-foot radius of the site. Municipal water is available to the site and surrounding

___________________________________________________________________________________________
Prepared by: Geological Resources, Inc. Ground Water Monitoring Report
Prepared on: January 21, 2020 Ethco Service Station
Project Manager: William Regenthal, P. G. GRI Project No. 2911
2
properties. Water supply well owner information is included as Table 3. Adjacent property owner
information is presented in Table 4. A Site Vicinity Map showing the adjacent properties has been
included as Figure 2. A Site Map showing the locations of the monitoring wells and the structures on-site
has been included as Figure 3.

A Corrective Action Plan proposing natural attenuation remediation paired with Aggressive Fluid-Vapor
Recovery (AFVR) and High Vacuum Dual Phase Extraction (HVDPE) events was completed in February
2001.

2.0 PRESENTATION OF CURRENT SITE ASSESSMENT INFORMATION/ COMPARISON TO HISTORICAL
ASSESSMENT INFORMATION
On January 6, 2020, four Type II monitoring wells (MW-1, MW-2, MW-7 and GMW-1) and one recovery
well (RW-1) were gauged, purged and sampled. Depths to ground water in the Type II monitoring wells
ranged 0.62 feet to 2.21 feet from the tops of well casings. Well construction and gauging information is
presented in Table 5. Ground water elevations in the Type II monitoring wells relative to a temporary
benchmark with an assumed datum of 100.00 feet ranged from 98.15 to 99.38 feet. Based on this
information, ground water flow direction is generally to the east. The horizontal hydraulic gradient across
the site was approximately 0.03 feet per foot. MWD-6 was not gauged during the January gauging
activities and therefore the vertical gradient was not calculated between paired wells MW-2 and MW-6.
A Water Table Surface Map is included as Figure 4. A summary of the current ground water gauging data
is shown below:
Well ID
Screened
Interval
(x to y ft. BGS)
Bottom
of Well
(ft. BGS)
Top of Casing
Elevation
(ft.)
Depth to
Water from
Top of Casing
(feet)
Free Product
Thickness
(ft.)
Ground
Water
Elevation (ft.)
MW-1 3 - 13 13 100.57 2.21 --- 98.36
MW-2 3 - 13 13 100.00 0.62 --- 99.38
MW-7 5 - 15 15 99.39 1.24 --- 98.15
GMW-1 3 - 8 8 99.90 1.27 --- 98.63
RW-1 Unknown 25 Unknown 2.00 --- Unknown

Ground water samples collected from the monitoring wells were submitted for laboratory analyses using
EPA Method 6200B. The Maximum Allowable Concentrations (MACs) as specified in T15A NCAC 2L.0202
were below the concentrations of individual BTEX constituents, MTBE, naphthalene, isopropylbenzene,
n-propylbenzene, n-butylbenzene, IPE, 1,3,5-trimethylbenzene and/or 1,2,4-trimethylbenzene reported
in the ground water samples collected from MW-1, MW-2, MW-7 and RW-1. All of the reported
contaminant concentrations were below the Gross Contamination Levels. The 2B Surface Water
Standards times a factor of ten were below the concentrations of benzene and/or toluene reported in the
ground water samples collected from MW-1, MW-2, MW-7 and RW-1. A summary of the analytical results
for ground water samples collected on January 6, 2020, is presented in Table 6. A Ground Water Quality
Map based on the January 2020 data is included as Figure 5. A complete report of laboratory analyses of
the ground water samples collected from the monitoring wells during the January 2020 sampling event
has been included as Appendix B. A summary of the current ground water analytical data is shown below:

___________________________________________________________________________________________
Prepared by: Geological Resources, Inc. Ground Water Monitoring Report
Prepared on: January 21, 2020 Ethco Service Station
Project Manager: William Regenthal, P. G. GRI Project No. 2911
3

Contaminant
of Concern  Benzene Toluene Ethylbenzene Xylenes MTBE Naphthalene Well
ID
MACs (µg/l) 1 600 600 500 20 6
GCL (µg/l) 5,000 260,000 84,500 85,500 20,000 6,000
10 x 2B
Standard (µg/l) 510 110 NE NE NE NE
MW-1 1,650 206 3,180 1,610 <13 883
MW-2 723 <3.1 <3.1 <6.3 13.5 <3.1
MW-7 2,130 27.1 296 134 1,120 128
GMW-1 0.45 J 0.84 0.18 J 2.5 17.1 0.65
RW-1 1,060 12.0 J <3.1 52.6 12.9 J 29.5

The baseline contaminant mass at the site was determined based on the total BTEX, MTBE and
naphthalene concentrations from the April 2010 ground water sampling event as well as the maximum
historical water column height observed in each area. The contaminant plume was divided into three
areas (Areas 1, 2 and 3) based on the benzene concentrations during the April 2010 ground water sampling
event. The total contaminant mass at the site has decreased by 64.6% at the site between April 2010 and
January 2019. Please note, RW-1 was not sampled in April 2010. For the purpose of the contaminant
mass calculations, the July 2019 results for RW-1 were used as an assumed value for the April 2010
sampling event. Please also note, MW-9 was not sampled in January 2020, therefore the July 2019
contaminate mass was used for Area 1 in the total contaminant mass reduction calculation for January
2020. Contaminant mass reduction calculations have been included as Appendix C. A map of the
contaminant mass areas has been included as Figure 6. A chart depicting the overall trend in contaminant
mass is shown below:

___________________________________________________________________________________________
Prepared by: Geological Resources, Inc. Ground Water Monitoring Report
Prepared on: January 21, 2020 Ethco Service Station
Project Manager: William Regenthal, P. G. GRI Project No. 2911
4
The site is located in the Coastal Plain Physiographic Province of North Carolina. The water table has a
seasonal high depth to water of approximately 1 to 4 feet below ground surface (bgs). Remediation
milestones have not been established for the site.
3.0 FREE PRODUCT REMOVAL
Free product has not been observed at the site during past sampling events.
4.0 NATURAL ATTENUATION / NATURAL SOURCE ZONE DEPLETION STATUS
Although the February 2001 CAP proposed remediation using natural attenuation, a natural attenuation
monitoring plan is not currently in place at the site. Natural attenuation parameters should be included
in the next sampling event.
5.0 CONCLUSIONS
 On January 6, 2020, four Type II monitoring wells and one recovery well were gauged, purged and
sampled. Ground water flow direction is generally to the east. The horizontal hydraulic gradient
across the site was approximately 0.03 feet per foot. The vertical gradient was not calculated.
 The MACs were below the concentrations of individual BTEX constituents, MTBE, naphthalene,
isopropylbenzene, n-propylbenzene, n-butylbenzene, IPE, 1,3,5-trimethylbenzene and/or 1,2,4-
trimethylbenzene reported in the ground water samples collected from MW-1, MW-2, MW-7 and
RW-1. All of the reported contaminant concentrations were below the Gross Contamination
Levels. The 2B Surface Water Standards times a factor of ten were below the concentrations of
benzene and/or toluene reported in the ground water samples collected from MW-1, MW-2, MW-
7 and RW-1.
 The total contaminant mass at the site has decreased approximately 64.6% between the April
2010 and January 2020 sampling events.
 Based on the above information, the site risk classification should remain as Intermediate. Semi-
annual ground water sampling activities should continue at the site. The next sampling event is
tentatively scheduled for July 2020 and should include an evaluation of natural attenuation
parameters. Additionally, AFVR events could be conducted at the site in order to aid in
contaminant reduction and boost natural attenuation at the site.
6.0 LIMITATIONS
This report has been prepared for the exclusive use of Etheridge Oil and Gas, Inc. for specific application
to the referenced site in Hyde County, North Carolina. The assessment was conducted based on the scope
of work and level of effort desired by NCDEQ and with resources adequate only for that scope of work.
Our findings have been developed in accordance with generally accepted standards of environmental
practices in the State of North Carolina, available information, and our professional judgment. No other
warranty is expressed or implied.

The data that are presented in this report are indicative of conditions that existed at the precise locations
sampled and at the time the samples were collected. In addition, the data obtained from samples would

FIGURES
Copyright (C) 2009 MyTopo
SCALE 1:24000
0 1000 2000 3000 4000 5000
FEET
Declination
MN 10.72° W

MN
Location: 035.5080340° N 075.9999930° WDate: 04/02/19
Scale: 1 inch = 2,000 ft.
Copyright (C) 2009 MyTopo
Figure 1
Site Location Map
Etheridge Oil & Gas Company Facility
34970 Highway 264, Engelhard, Hyde County, NC
Incident No. 12709
GRI Project No. 2911
"J
"J
"J
"J
"J
SITE8695-2 3 -6 21 7
8695-23-20558695-23-5153 8695-23-8037
8695-33-02088695-23-9443869 5-2 3-850 28695-23-3573
8695-23-6423
8695-23-6455 8695-23-6486
9501-31-6595
8695-23-5431
8695-23-7438
Pamlico River And Pamlico Sound
US 264 HWY
LAZY LNHILL ST
ROPER LN
GOSHEN BACK RDGOLDEN STCOOPER LNSILVER LNCAHOON RD
SPENCER LN SUMMERLIN DRFAR CREEK
WSW-5
WSW-4
WSW-3
WSW-2
WSW-1
³

FIGURE 2: SITE VICINITY MAPETHCO SERVICE STATION34970 US HIGHWAY 264 ENGLEHARD HYDE COUNTY,NORTH CAROLINAINCIDENT NO. 12709
PREPARED BY:GEOLOGICAL RESOURCES, INC.JUNE 8, 2010
NOTE:Based on Hyde County, NC GIS Website.
0 300150Feet
1 inch equals 300 feet
1,500-FOOT RADIUS
1,000-FOOT RADIUS
250-FOOT RADIUS
8695-13-8551
8695-23-0445
8695-33-1816 8695-33-68588695-24-9147LEGEND
"J Water Supply Well
ncrivers
Centerlines
hydromaj_poly
Parcels
8695-23-6217 PIN Number
3

TABLES
UST ID Number A1 & A1B Facility ID Number
Owner or Operator?
Owner and Operator
UST ID Number 1, 2 Facility ID Number
Owner or Operator?
Owner and Operator
UST ID Number 3, 4 Facility ID Number
Owner or Operator?
Owner and Operator
Address Telephone Number
Post Office Box 65, Engelhard, NC 27824 252-925-4301
00-2-0000017866
Name of Owner or Operator Dates of Ownership / Operation
Etheridge Oil and Gas, Inc.01/28/1987 - 06/21/1994
Address Telephone Number
Post Office Box 65, Engelhard, NC 27824 252-925-4301
00-2-0000017866
Name of Owner or Operator Dates of Ownership / Operation
Etheridge Oil and Gas, Inc.01/28/1988 - 06/21/1994
TABLE 1
UST OWNER/OPERATOR INFORMATION
ETHCO SERVICE STATION (INCIDENT NO. 12709/38758)
Post Office Box 65, Engelhard, NC 27824 252-925-4301
00-2-0000017866
Dates of Ownership / OperationName of Owner or Operator
Address Telephone Number
Etheridge Oil and Gas, Inc.06/28/1994 - 03/27/2019
Page 1 of 1
Date: 04/02/19
Was Release
Associated
with UST
System?
(Yes / No)
1 Diesel Diesel 1,000 01/28/1988 Steel 64" x 72"Unknown Removed
(06/21/1994)Yes
2 Gasoline Gasoline 1,000 01/28/1988 Steel 64" x 72"Unknown Removed
(06/21/1994)Yes
3 Gasoline Gasoline 2,000 01/28/1987 Steel 64" x 12'Unknown Removed
(06/21/1994)Yes
4 Gasoline Gasoline 2,000 01/28/1987 Steel 64" x 12'Unknown Removed
(06/21/1994)Yes
A1 Gasoline Gasoline 8,000
A1B Gasoline Gasoline 4,000
UnknownFlex8' x 31' 11"Double Wall Steel06/28/1994 Removed
(03/27/19)
ETHCO SERVICE STATION (INCIDENT NO. 12709/38758)
TABLE 2
UST SYSTEM INFORMATION
Capacity
(gallons)
Tank
Dimensions
Status
of
UST
UST
ID
No.
Current
or Most
Recent
Contents
Previous
Contents
Construction
Details
Description of
Associated
Product Piping
and
Pumps
Date
Installed
Facility ID #: 00-2-0000017866
Date : 06/01/10 Facility ID #: 00-2-0000017866
Well ID.Parcel ID No.Well Owner Owner Address Property Address
Well Use
(Potable/Agricultural,
etc.)
Municipal Water
Well
Depth
(ft. BGS)
Type of Well
(Drilled/
Bored)
Well Casing
Depth
(ft. BGS)
Well Screen
Interval
(x to y ft. BGS)
Distance from
source area of
release
(ft.)
WSW-1 8695-13-8551 Jessie R. Gibbs 32399 US Hwy 264
Engelhard, NC 27824
34819 US Hwy 264
Engelhard, NC Not Active Yes NA NA NA NA ~750 ft WNW
WSW-2 8695-23-0445 Jessie R. Gibbs 32399 US Hwy 264
Engelhard, NC 27824
34835 US Hwy 264
Engelhard, NC Not Active Yes NA NA NA NA ~ 600 ft WNW
WSW-3 8695-33-1816 Margarette G. Gibbs 11150 N. Lake Road
Engelhard, NC 27824
82 Golden Street
Engelhard, NC Not Active Yes NA NA NA NA ~780 ft NE
WSW-4 8695-33-6858 Gibbs Store, LLC P.O. Box 39
Engelhard, NC 27824
35205 US Hwy 264
Engelhard, NC Not Active Yes NA NA NA NA ~1,140 ft NE
WSW-5 8695-24-9147 Nina C. Gibbs P.O. Box 14
Engelhard, NC 27824
305 Roper Lane
Engelhard, NC Not Active Yes 220 NA NA NA ~975 ft NNE
• ft. BGS: Feet below ground surface.
TABLE 3
WATER SUPPLY WELL INFORMATION
ETHCO SERVICE STATION (INCIDENT NO. 12709/38758)
Note:
• Water supply wells are keyed to Figure 2.
• NA: Data not available.
Page 1 of 1
Date: 06/01/10 Facility ID # : 00-2-0000017866
Etheridge Jr., T.J.26 Lazy Lane
Engelhard, NC
Spencer, R. S. Inc.34910 US Hwy 264
Engelhard, NC
Gibbs, Hilda M.
% Jimmy Aubrey
1329 Goshen Road
Engelhard, NC 27824
70 Lazy Lane
Engelhard, NC
Williams, Christopher Lee 25 Lazy Lane
Engelhard, NC 27824
25 Lazy Lane
Engelhard, NC
Williams, Christopher Lee 25 Lazy Lane
Engelhard, NC 27824
25 Lazy Lane
Engelhard, NC
East Carolina Bank P.O. Box 337
Engelhard, NC 27824 Not Available
East Carolina Bank P.O. Box 337
Engelhard, NC 27824
35015 US Hwy 264
Engelhard, NC
East Carolina Bank P.O. Box 337
Engelhard, NC 27824 Not Available
East Carolina Bank P.O. Box 337
Engelhard, NC 27824 Not Available
Gibbs, Cynthia M. P.O. Box 423
Engelhard, NC 27824
34981 US Hwy 264
Engelhard, NC
Meekins Jr., Gorden 870 Nebraska Road
Engelhard, NC 27824
39971 US Hwy 264
Engelhard, NC
Mann Jr., Harvey Bount 2420 Ocean Sh Cres #403
Virginia Beach, VA 23451
39951 US Hwy 264
Engelhard, NC
Not Available Not Available Not Available
Note:
• Properties are keyed to Figure 2.
8695-23-6423
8695-23-5431
9501-31-6595/Canal
8695-33-0208
8695-23-9443
8695-23-8502
8695-23-7438
8695-23-6486
8695-23-6455
8695-23-6217 (Site)P.O. Box 65
Engelhard, NC 27824
8695-23-2055 P.O. Box 159
Engelhard, NC 27824
8695-23-5153
8695-23-8037
TABLE 4
ADJACENT PROPERTY OWNER INFORMATION
ETHCO SERVICE STATION (INCIDENT NO. 12709/38758)
Tax Parcel Number/
Map ID
Owner/ Occupant Name
(Last , First MI)Owner Address Property Address
Date: 01/15/2020
Well ID Date
Installed
Date Water
Level
Measured
(mm/dd/yy)
Well Casing
Depth
(ft. BGS)
Screened
Interval
(x to y ft. BGS)
Bottom of
Well
(ft. BGS)
Top of
Casing
Elevation*
(ft)
Depth to
Water from
Top-of-Casing
(ft)
Free
Product
Thickness
(ft)
Ground
Water
Elevation
(ft)
Comments
04/28/10 2.87 0.00 97.70
07/30/19 2.74 0.00 97.83
01/06/20 2.21 0.00 98.36
04/28/10 2.80 0.00 97.20
07/30/19 2.31 0.00 97.69
01/06/20 0.62 0.00 99.38
04/28/10 2.40 0.00 97.45
07/30/19 2.41 0.00 97.44
04/28/10 1.23 0.00 98.59
07/30/19 NM NM NM Not Found
04/28/10 0.72 0.00 98.64
07/30/19 1.40 0.00 97.96
04/28/10 2.30 0.00 97.90
07/30/19 2.52 0.00 97.68
04/28/10 0.70 0.00 98.69
07/30/19 1.70 0.00 97.69
01/06/20 1.24 0.00 98.15
04/28/10 0.68 0.00 99.03
07/30/19 1.59 0.00 98.12
04/28/10 1.62 0.00 98.29
07/30/19 1.76 0.00 98.15
04/28/10 1.80 0.00 NA
07/30/19 TOC NM NM Top of Casing
04/28/10 1.20 0.00 NA
07/30/19 NM NM NM Not Found
04/28/10 0.85 0.00 NA
07/30/19 2.28 0.00 NA
07/30/19 3.43 0.00 NA
01/06/20 2.00 0.00 NM
07/30/19 2.00 0.00 97.90
01/06/20 1.27 0.00 98.63
Notes:
• * : If free product is present in a well, ground water elevation calculated by: [Top of Casing Elevation - Depth to Water] +
[free product thickness x 0.8581].
• Elevations relative to a temporary benchmark with an assumed datum of 10.00 feet; data reported in feet.
• NA: Not Applicable.
• Monitoring well MWD-6 is a "deep" Type II monitoring well.
Facility ID#: 00-2-0000017866
99.7110/19/98MW-8
100.2006/18/98MWD-6
99.3606/17/98
3 3 - 13 13
4
TABLE 5
WELL CONSTRUCTION AND GAUGING INFORMATION
ETHCO SERVICE STATION (INCIDENT NO: 12709/38758)
10/25/94
10/25/94
100.57
100.00
MW-5
99.8206/17/98MW-4
99.8510/25/94MW-3
4 - 9 9
5 5 - 15 15
5 5 - 15 15
5 5 - 15 15
GMW-1
RW-1
MW-7
MW-2
MW-1
MW-11
MW-9
MW-13
MW-12
10/19/98
Unknown
07/30/19
3
3
5
25
3
5
30
08/23/99
10/19/98 5
2.5
08/23/99
08/23/99
3 - 8
3 - 13
3 - 13
5 - 15
Unknown
5 - 15
30 - 35
5 - 15
2.5 - 7.5
99.39
Unknown
99.908
13
13
15
Unknown
15
35
99.9115
7.5 Unknown
Unknown
Unknown
Page 1 of 1
Date: 01/15/2020
Well ID
Date
Collected
(mm/dd/yy)
1 600 600 500 20 6 70 70 400 400 400 700 200
510 110 NE NE NE NE NE NE NE NE NE NE NE
5,000 260,000 84,500 85,500 20,000 6,000 25,000 30,000 25,000 28,500 NE NE NE
04/28/10 1,420 2,390 5,440 16,800 <25.0 1,580 454 1,180 2,430 8,830 9,760 <5,000 9,940
07/30/19 1,840 184 3,440 1,750 <13 650 168 653 268 2,740 NS NS NS
01/06/20 1,650 206 3,180 1,610 <13 883 244 740 2,750 300 NR NR NR
04/28/10 1,520 3.83 4.08 6.72 84.0 <5.00 2.49 2.14 <0.500 0.560 842 <100 <100
07/30/19 1,230 6.1 J <3.1 <6.3 10.2 J <3.1 3.5 J 5.0 J <3.1 <3.1 NS NS NS
01/06/20 723 <3.1 <3.1 <6.3 13.5 <3.1 <3.1 <3.1 <3.1 <3.1 NR NR NR
04/28/10 <0.500 <0.500 <0.500 <1.00 2.03 <5.00 <0.500 <0.500 <0.500 <0.500 <100 <100 <100
07/30/19 <0.13 <0.13 <0.13 <0.25 0.13 J <0.13 <0.13 <0.13 <0.13 <0.13 NS NS NS
MW-4 04/28/10 <0.500 <0.500 <0.500 <1.00 22.9 <5.00 <0.500 <0.500 <0.500 <0.500 <100 <100 <100
04/28/10 <0.500 <0.500 <0.500 <1.00 22.4 <5.00 <0.500 <0.500 <0.500 <0.500 <100 <100 <100
07/30/19 <0.13 <0.13 <0.13 <0.25 1.5 0.82 2.2 1.5 <0.13 <0.13 NS NS NS
04/28/10 <0.500 <0.500 <0.500 <1.00 6.48 <5.00 <0.500 <0.500 <0.500 <0.500 <100 <100 <100
07/30/19 <0.13 <0.13 <0.13 <0.25 13.9 <0.13 <0.13 <0.13 <0.13 <0.13 NS NS NS
04/28/10 3,550 47.2 779 173 2,220 63.8 25.7 65.1 <5.00 8.50 2,690 196 199
07/30/19 0.28 J 0.54 <0.13 0.66 J 13.9 0.23 J 0.32 J 0.36 J <0.13 <0.13 NS NS NS
01/06/20 2,130 27.1 296 134 1,120 128 67.4 239 35.7 9.3 J NR NR NR
04/28/10 <0.500 <0.500 <0.500 <1.00 19.6 <5.00 <0.500 <0.500 <0.500 <0.500 <100 <100 <100
07/30/19 <0.13 <0.13 <0.13 <0.25 8.7 <0.13 <0.13 <0.13 <0.13 <0.13 NS NS NS
04/28/10 26.2 1.57 2.92 16.2 8.46 156 52.7 70.5 <0.500 1.28 276 <100 410
07/30/19 1.9 0.99 1.4 4.6 4.4 27.1 29.40 53.4 <0.13 0.19 J NS NS NS
04/28/10 <0.500 <0.500 <0.500 <1.00 37.2 <5.00 <0.500 <0.500 <0.500 <0.500 <100 <100 <100
07/30/19 <0.13 <0.13 <0.13 <0.25 23.8 <0.13 <0.13 <0.13 <0.13 <0.13 NS NS NS
MW-12 04/28/10 <0.500 <0.500 <0.500 <1.00 <0.500 <5.00 <0.500 <0.500 <0.500 <0.500 <100 <100 <100
04/28/10 <0.500 <0.500 <0.500 <1.00 <0.500 <5.00 <0.500 <0.500 <0.500 <0.500 <100 <100 <100
07/30/19 <0.13 <0.13 <0.13 <0.25 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 NS NS NS
07/30/19 1,080 12.4 J 85.3 45.4 726 52.1 23.2 73.7 4.6 J 18.7 NS NS NS
01/06/20 0.45 J 0.84 0.18 J 2.5 17.1 0.65 1.4 1.0 0.29 J 0.20 J NR NR NR
07/30/19 2,690 29.7 J <13 62.1 J <13 29.6 J 24.6 J 63.9 <13 <13 NS NS NS
01/06/20 1,060 12.0 J <3.1 52.6 12.9 J 29.5 16.9 41.7 <3.1 <3.1 NR NR NR
Notes:
• Concentrations underlined indicate the 2B Surface Water Standards by a factor of ten are below the reported concentrations.
• NR: Not requested.
• Concentrations in bold face type indicate the MACs were below the reported concentrations.
• Concentrations in italics indicate the GCLs were below the reported concentrations.
• For the following additional compounds the MACs were below the reported concentrations during the 01/06/2020 sampling event:
GMW-1
MW-1
MW-2
MW-7
RW-1 1,3,5 Trimethylbenzene10 x 2B Standard (µg/l)
GCL (mg/l)
2L Standard (mg/l)TolueneEthylbenzeneTABLE 6
SUMMARY OF GROUND WATER SAMPLE ANALYTICAL RESULTS
ETHCO SERVICE STATION (INCIDENT NO. 12709/38758)
Analytical Method EPA Method 6200B MADEP Method VPH
XylenesMTBENaphthaleneIsopropylbenzenen-PropylbenzeneFacility ID #: 00-2-0000017866
C5-C8 AliphaticsC9-C12 AliphaticsC9-C10 Aromatics1,2,4 TrimethylbenzeneContaminant of Concern
Benzene• J: Estimated concentration.
MW-3
MW-5
MW-8
• NE: Standard not established.
• Results reported in µg/l (micrograms per liter).
• 2L Standard: as specified in T15A NCAC 2L.02
• GCL: Gross contamination level.
• <: Less than the method detection limit specified in the laboratory report.
MW-9
MW-11
MW-13
• NS: Not sampled.
MWD-6
IPE (72.4 µg/l) in MW-7 and n-butylbenzene (74.5 µg/l) in MW-1

APPENDICES

APPENDIX A
State Correspondence

APPENDIX B
Laboratory Report – Ground Water Samples
01/13/20
Technical Report for
GRI (Geological Resources Inc.)
Ethco Service Station; 34970 US Hwy 264, Engelhard, NC
0-017866/2911
SGS Job Number: FA71352
Sampling Date: 01/06/20
Report to:
GRI
3502 Hayes Rd
Monroe, NC 28110
[e-mail]; [e-mail];
[e-mail]; [e-mail]
ATTN: William Regenthall
Total number of pages in report:
Certifications: FL(E83510), LA(03051), KS(E-10327), IL(200063), NC(573), NJ(FL002), NY(12022), SC(96038001)
DoD ELAP(ANAB L2229), AZ(AZ0806), CA(2937), TX(T104704404), PA(68-03573), VA(460177),
AK, AR, IA, KY, MA, MS, ND, NH, NV, OK, OR, UT, WA, WV
This report shall not be reproduced, except in its entirety, without the written approval of SGS.
Test results relate only to samples analyzed.
SGS North America Inc. • 4405 Vineland Road • Suite C-15 • Orlando, FL 32811 • tel: [phone] • fax: [phone]
Test results contained within this data package meet the requirements
of the National Environmental Laboratory Accreditation Program
and/or state specific certification programs as applicable.
Client Service contact: Muna Mohammed 407-425-6700
Caitlin Brice, M.S.
General Manager
Orlando, FL 01/13/20
e-Hardcopy 2.0
Automated Report
32
SGS is the sole authority for authorizing edits or modifications to this document.
Unauthorized modification of this report is strictly prohibited.
Review standard terms at: http://www.sgs.com/en/terms-and-conditions
The results set forth herein are provided by SGS North America Inc.
Please share your ideas about
how we can serve you better at:
[e-mail]
1 of 32
FA71352
Table of Contents
-1-
Sections:
Section 1: Sample Summary ...................................................................................................3
Section 2: Summary of Hits ....................................................................................................4
Section 3: Sample Results ........................................................................................................6
3.1: FA71352-1: GMW-1 .....................................................................................................7
3.2: FA71352-2: MW-7 ........................................................................................................9
3.3: FA71352-3: MW-2 ........................................................................................................11
3.4: FA71352-4: RW-1 .........................................................................................................13
3.5: FA71352-5: MW-1 ........................................................................................................15
Section 4: Misc. Forms ............................................................................................................17
4.1: Chain of Custody ...........................................................................................................18
Section 5: MS Volatiles - QC Data Summaries .....................................................................20
5.1: Method Blank Summary ................................................................................................21
5.2: Blank Spike Summary ...................................................................................................25
5.3: Matrix Spike/Matrix Spike Duplicate Summary ...........................................................29 123452 of 32
FA71352
SGS North America Inc.
Sample Summary
GRI (Geological Resources Inc.)
Job No:FA71352
Ethco Service Station; 34970 US Hwy 264, Engelhard, NC
Project No: 0-017866/2911
Sample Collected Matrix Client
Number Date Time By Received Code Type Sample ID
This report contains results reported as ND = Not detected. The following applies:
Organics ND = Not detected above the MDL
FA71352-1 01/06/20 12:47 ME 01/07/20 AQ Ground Water GMW-1
FA71352-2 01/06/20 12:58 ME 01/07/20 AQ Ground Water MW-7
FA71352-3 01/06/20 13:05 ME 01/07/20 AQ Ground Water MW-2
FA71352-4 01/06/20 13:20 ME 01/07/20 AQ Ground Water RW-1
FA71352-5 01/06/20 13:26 ME 01/07/20 AQ Ground Water MW-1
3 of 32
FA713521
Summary of Hits Page 1 of 2
Job Number:FA71352
Account:GRI (Geological Resources Inc.)
Project:Ethco Service Station; 34970 US Hwy 264, Engelhard, NC
Collected:01/06/20
Lab Sample ID Client Sample ID Result/
Analyte Qual RL MDL Units Method
FA71352-1 GMW-1
Benzene 0.45 J 0.50 0.13 ug/l SM 6200B
Chloroethane 0.20 J 0.50 0.20 ug/l SM 6200B
Di-Isopropyl Ether 4.2 0.50 0.13 ug/l SM 6200B
Ethylbenzene 0.18 J 0.50 0.13 ug/l SM 6200B
Isopropylbenzene 1.4 0.50 0.13 ug/l SM 6200B
Methyl Chloride 1.0 0.50 0.20 ug/l SM 6200B
Methyl Tert Butyl Ether 17.1 0.50 0.13 ug/l SM 6200B
Naphthalene 0.65 0.50 0.13 ug/l SM 6200B
n-Propylbenzene 1.0 0.50 0.13 ug/l SM 6200B
Toluene 0.84 0.50 0.13 ug/l SM 6200B
1,2,4-Trimethylbenzene 0.29 J 0.50 0.13 ug/l SM 6200B
1,3,5-Trimethylbenzene 0.20 J 0.50 0.13 ug/l SM 6200B
m,p-Xylene 1.4 1.0 0.13 ug/l SM 6200B
o-Xylene 1.1 0.50 0.13 ug/l SM 6200B
Xylene (total)2.5 1.5 0.25 ug/l SM 6200B
FA71352-2 MW-7
Benzene 2130 25 6.3 ug/l SM 6200B
n-Butylbenzene 27.0 25 6.3 ug/l SM 6200B
sec-Butylbenzene 14.1 J 25 6.3 ug/l SM 6200B
Di-Isopropyl Ether 72.4 25 6.3 ug/l SM 6200B
Ethylbenzene 296 25 6.3 ug/l SM 6200B
Isopropylbenzene 67.4 25 6.3 ug/l SM 6200B
Methyl Chloride 11.5 J 25 10 ug/l SM 6200B
Methyl Tert Butyl Ether 1120 25 6.3 ug/l SM 6200B
Naphthalene 128 25 6.3 ug/l SM 6200B
n-Propylbenzene 239 25 6.3 ug/l SM 6200B
Toluene 27.1 25 6.3 ug/l SM 6200B
1,2,4-Trimethylbenzene 35.7 25 6.3 ug/l SM 6200B
1,3,5-Trimethylbenzene 9.3 J 25 6.3 ug/l SM 6200B
m,p-Xylene 126 50 6.3 ug/l SM 6200B
o-Xylene 8.1 J 25 6.3 ug/l SM 6200B
Xylene (total)134 75 13 ug/l SM 6200B
FA71352-3 MW-2
Benzene 723 13 3.1 ug/l SM 6200B
Chloroform 3.3 J 13 3.1 ug/l SM 6200B
cis-1,2-Dichloroethylene 4.4 J 13 3.1 ug/l SM 6200B
Di-Isopropyl Ether 3.6 J 13 3.1 ug/l SM 6200B
Methyl Tert Butyl Ether 13.5 13 3.1 ug/l SM 6200B
4 of 32
FA713522
Summary of Hits Page 2 of 2
Job Number:FA71352
Account:GRI (Geological Resources Inc.)
Project:Ethco Service Station; 34970 US Hwy 264, Engelhard, NC
Collected:01/06/20
Lab Sample ID Client Sample ID Result/
Analyte Qual RL MDL Units Method
FA71352-4 RW-1
Benzene 1060 13 3.1 ug/l SM 6200B
Di-Isopropyl Ether 18.9 13 3.1 ug/l SM 6200B
Isopropylbenzene 16.9 13 3.1 ug/l SM 6200B
Methyl Tert Butyl Ether 12.9 J 13 3.1 ug/l SM 6200B
Naphthalene 29.5 13 3.1 ug/l SM 6200B
n-Propylbenzene 41.7 13 3.1 ug/l SM 6200B
Toluene 12.0 J 13 3.1 ug/l SM 6200B
m,p-Xylene 48.3 25 3.1 ug/l SM 6200B
o-Xylene 4.3 J 13 3.1 ug/l SM 6200B
Xylene (total)52.6 38 6.3 ug/l SM 6200B
FA71352-5 MW-1
Benzene 1650 50 13 ug/l SM 6200B
n-Butylbenzene 74.5 50 13 ug/l SM 6200B
sec-Butylbenzene 44.1 J 50 13 ug/l SM 6200B
Ethylbenzene 3180 50 13 ug/l SM 6200B
Isopropylbenzene 244 50 13 ug/l SM 6200B
p-Isopropyltoluene 19.2 J 50 13 ug/l SM 6200B
Naphthalene 883 50 13 ug/l SM 6200B
n-Propylbenzene 740 50 13 ug/l SM 6200B
Toluene 206 50 13 ug/l SM 6200B
1,2,4-Trimethylbenzene 2750 50 13 ug/l SM 6200B
1,3,5-Trimethylbenzene 300 50 13 ug/l SM 6200B
m,p-Xylene 1580 100 13 ug/l SM 6200B
o-Xylene 29.9 J 50 13 ug/l SM 6200B
Xylene (total)1610 150 25 ug/l SM 6200B
5 of 32
FA713522
SGS North America Inc.
Sample Results
Report of Analysis
Orlando, FL
Section 3
6 of 32
FA713523
SGS North America Inc.
Report of Analysis Page 1 of 2
Client Sample ID:GMW-1
Lab Sample ID:FA71352-1 Date Sampled:01/06/20
Matrix:AQ - Ground Water Date Received:01/07/20
Method:SM 6200B Percent Solids:n/a
Project:Ethco Service Station; 34970 US Hwy 264, Engelhard, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 A0220702.D 1 01/09/20 16:13 AB n/a n/a VA2668
Run #2
Purge Volume
Run #1 10.0 ml
Run #2
VOA 6200B List
CAS No.Compound Result RL MDL Units Q
71-43-2 Benzene 0.45 0.50 0.13 ug/l J
108-86-1 Bromobenzene ND 0.50 0.13 ug/l
74-97-5 Bromochloromethane ND 0.50 0.13 ug/l
75-27-4 Bromodichloromethane ND 0.50 0.13 ug/l
75-25-2 Bromoform ND 0.50 0.13 ug/l
104-51-8 n-Butylbenzene ND 0.50 0.13 ug/l
135-98-8 sec-Butylbenzene ND 0.50 0.13 ug/l
98-06-6 tert-Butylbenzene ND 0.50 0.13 ug/l
56-23-5 Carbon Tetrachloride ND 0.50 0.13 ug/l
108-90-7 Chlorobenzene ND 0.50 0.13 ug/l
75-00-3 Chloroethane 0.20 0.50 0.20 ug/l J
67-66-3 Chloroform ND 0.50 0.13 ug/l
95-49-8 o-Chlorotoluene ND 0.50 0.13 ug/l
106-43-4 p-Chlorotoluene ND 0.50 0.13 ug/l
124-48-1 Dibromochloromethane ND 0.50 0.13 ug/l
96-12-8 1,2-Dibromo-3-chloropropane ND 0.50 0.25 ug/l
106-93-4 1,2-Dibromoethane ND 0.50 0.13 ug/l
75-71-8 Dichlorodifluoromethane ND 0.50 0.20 ug/l
95-50-1 1,2-Dichlorobenzene ND 0.50 0.13 ug/l
541-73-1 1,3-Dichlorobenzene ND 0.50 0.13 ug/l
106-46-7 1,4-Dichlorobenzene ND 0.50 0.13 ug/l
75-34-3 1,1-Dichloroethane ND 0.50 0.13 ug/l
107-06-2 1,2-Dichloroethane ND 0.50 0.13 ug/l
75-35-4 1,1-Dichloroethylene ND 0.50 0.13 ug/l
156-59-2 cis-1,2-Dichloroethylene ND 0.50 0.13 ug/l
156-60-5 trans-1,2-Dichloroethylene ND 0.50 0.13 ug/l
78-87-5 1,2-Dichloropropane ND 0.50 0.13 ug/l
142-28-9 1,3-Dichloropropane ND 0.50 0.13 ug/l
594-20-7 2,2-Dichloropropane ND 0.50 0.13 ug/l
563-58-6 1,1-Dichloropropene ND 0.50 0.13 ug/l
10061-01-5 cis-1,3-Dichloropropene ND 0.50 0.13 ug/l
10061-02-6 trans-1,3-Dichloropropene ND 0.50 0.13 ug/l
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
7 of 32
FA7135233.1
SGS North America Inc.
Report of Analysis Page 2 of 2
Client Sample ID:GMW-1
Lab Sample ID:FA71352-1 Date Sampled:01/06/20
Matrix:AQ - Ground Water Date Received:01/07/20
Method:SM 6200B Percent Solids:n/a
Project:Ethco Service Station; 34970 US Hwy 264, Engelhard, NC
VOA 6200B List
CAS No.Compound Result RL MDL Units Q
108-20-3 Di-Isopropyl Ether 4.2 0.50 0.13 ug/l
100-41-4 Ethylbenzene 0.18 0.50 0.13 ug/l J
87-68-3 Hexachlorobutadiene ND 0.50 0.13 ug/l
98-82-8 Isopropylbenzene 1.4 0.50 0.13 ug/l
99-87-6 p-Isopropyltoluene ND 0.50 0.13 ug/l
74-83-9 Methyl Bromide ND 0.50 0.20 ug/l
74-87-3 Methyl Chloride 1.0 0.50 0.20 ug/l
74-95-3 Methylene Bromide ND 0.50 0.13 ug/l
75-09-2 Methylene Chloride ND 2.0 1.0 ug/l
1634-04-4 Methyl Tert Butyl Ether 17.1 0.50 0.13 ug/l
91-20-3 Naphthalene 0.65 0.50 0.13 ug/l
103-65-1 n-Propylbenzene 1.0 0.50 0.13 ug/l
100-42-5 Styrene ND 0.50 0.13 ug/l
630-20-6 1,1,1,2-Tetrachloroethane ND 0.50 0.13 ug/l
79-34-5 1,1,2,2-Tetrachloroethane ND 0.50 0.13 ug/l
127-18-4 Tetrachloroethylene ND 0.50 0.13 ug/l
108-88-3 Toluene 0.84 0.50 0.13 ug/l
87-61-6 1,2,3-Trichlorobenzene ND 0.50 0.13 ug/l
120-82-1 1,2,4-Trichlorobenzene ND 0.50 0.13 ug/l
71-55-6 1,1,1-Trichloroethane ND 0.50 0.13 ug/l
79-00-5 1,1,2-Trichloroethane ND 0.50 0.13 ug/l
79-01-6 Trichloroethylene ND 0.50 0.13 ug/l
75-69-4 Trichlorofluoromethane ND 0.50 0.20 ug/l
96-18-4 1,2,3-Trichloropropane ND 0.50 0.13 ug/l
95-63-6 1,2,4-Trimethylbenzene 0.29 0.50 0.13 ug/l J
108-67-8 1,3,5-Trimethylbenzene 0.20 0.50 0.13 ug/l J
75-01-4 Vinyl Chloride ND 0.50 0.13 ug/l
m,p-Xylene 1.4 1.0 0.13 ug/l
95-47-6 o-Xylene 1.1 0.50 0.13 ug/l
1330-20-7 Xylene (total)2.5 1.5 0.25 ug/l
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
1868-53-7 Dibromofluoromethane 101%70-130%
17060-07-0 1,2-Dichloroethane-D4 105%70-130%
2037-26-5 Toluene-D8 96%70-130%
460-00-4 4-Bromofluorobenzene 96%70-130%
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
8 of 32
FA7135233.1
SGS North America Inc.
Report of Analysis Page 1 of 2
Client Sample ID:MW-7
Lab Sample ID:FA71352-2 Date Sampled:01/06/20
Matrix:AQ - Ground Water Date Received:01/07/20
Method:SM 6200B Percent Solids:n/a
Project:Ethco Service Station; 34970 US Hwy 264, Engelhard, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 E102216.D 50 01/10/20 15:36 AB n/a n/a VE2262
Run #2
Purge Volume
Run #1 10.0 ml
Run #2
VOA 6200B List
CAS No.Compound Result RL MDL Units Q
71-43-2 Benzene 2130 25 6.3 ug/l
108-86-1 Bromobenzene ND 25 6.3 ug/l
74-97-5 Bromochloromethane ND 25 6.3 ug/l
75-27-4 Bromodichloromethane ND 25 6.3 ug/l
75-25-2 Bromoform ND 25 6.3 ug/l
104-51-8 n-Butylbenzene 27.0 25 6.3 ug/l
135-98-8 sec-Butylbenzene 14.1 25 6.3 ug/l J
98-06-6 tert-Butylbenzene ND 25 6.3 ug/l
56-23-5 Carbon Tetrachloride ND 25 6.3 ug/l
108-90-7 Chlorobenzene ND 25 6.3 ug/l
75-00-3 Chloroethane ND 25 10 ug/l
67-66-3 Chloroform ND 25 6.3 ug/l
95-49-8 o-Chlorotoluene ND 25 6.3 ug/l
106-43-4 p-Chlorotoluene ND 25 6.3 ug/l
124-48-1 Dibromochloromethane ND 25 6.3 ug/l
96-12-8 1,2-Dibromo-3-chloropropane ND 25 12 ug/l
106-93-4 1,2-Dibromoethane ND 25 6.3 ug/l
75-71-8 Dichlorodifluoromethane ND 25 10 ug/l
95-50-1 1,2-Dichlorobenzene ND 25 6.3 ug/l
541-73-1 1,3-Dichlorobenzene ND 25 6.3 ug/l
106-46-7 1,4-Dichlorobenzene ND 25 6.3 ug/l
75-34-3 1,1-Dichloroethane ND 25 6.3 ug/l
107-06-2 1,2-Dichloroethane ND 25 6.3 ug/l
75-35-4 1,1-Dichloroethylene ND 25 6.3 ug/l
156-59-2 cis-1,2-Dichloroethylene ND 25 6.3 ug/l
156-60-5 trans-1,2-Dichloroethylene ND 25 6.3 ug/l
78-87-5 1,2-Dichloropropane ND 25 6.3 ug/l
142-28-9 1,3-Dichloropropane ND 25 6.3 ug/l
594-20-7 2,2-Dichloropropane ND 25 6.3 ug/l
563-58-6 1,1-Dichloropropene ND 25 6.3 ug/l
10061-01-5 cis-1,3-Dichloropropene ND 25 6.3 ug/l
10061-02-6 trans-1,3-Dichloropropene ND 25 6.3 ug/l
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
9 of 32
FA7135233.2
SGS North America Inc.
Report of Analysis Page 2 of 2
Client Sample ID:MW-7
Lab Sample ID:FA71352-2 Date Sampled:01/06/20
Matrix:AQ - Ground Water Date Received:01/07/20
Method:SM 6200B Percent Solids:n/a
Project:Ethco Service Station; 34970 US Hwy 264, Engelhard, NC
VOA 6200B List
CAS No.Compound Result RL MDL Units Q
108-20-3 Di-Isopropyl Ether 72.4 25 6.3 ug/l
100-41-4 Ethylbenzene 296 25 6.3 ug/l
87-68-3 Hexachlorobutadiene ND 25 6.3 ug/l
98-82-8 Isopropylbenzene 67.4 25 6.3 ug/l
99-87-6 p-Isopropyltoluene ND 25 6.3 ug/l
74-83-9 Methyl Bromide ND 25 10 ug/l
74-87-3 Methyl Chloride 11.5 25 10 ug/l J
74-95-3 Methylene Bromide ND 25 6.3 ug/l
75-09-2 Methylene Chloride ND 100 50 ug/l
1634-04-4 Methyl Tert Butyl Ether 1120 25 6.3 ug/l
91-20-3 Naphthalene 128 25 6.3 ug/l
103-65-1 n-Propylbenzene 239 25 6.3 ug/l
100-42-5 Styrene ND 25 6.3 ug/l
630-20-6 1,1,1,2-Tetrachloroethane ND 25 6.3 ug/l
79-34-5 1,1,2,2-Tetrachloroethane ND 25 6.3 ug/l
127-18-4 Tetrachloroethylene ND 25 6.3 ug/l
108-88-3 Toluene 27.1 25 6.3 ug/l
87-61-6 1,2,3-Trichlorobenzene ND 25 6.3 ug/l
120-82-1 1,2,4-Trichlorobenzene ND 25 6.3 ug/l
71-55-6 1,1,1-Trichloroethane ND 25 6.3 ug/l
79-00-5 1,1,2-Trichloroethane ND 25 6.3 ug/l
79-01-6 Trichloroethylene ND 25 6.3 ug/l
75-69-4 Trichlorofluoromethane ND 25 10 ug/l
96-18-4 1,2,3-Trichloropropane ND 25 6.3 ug/l
95-63-6 1,2,4-Trimethylbenzene 35.7 25 6.3 ug/l
108-67-8 1,3,5-Trimethylbenzene 9.3 25 6.3 ug/l J
75-01-4 Vinyl Chloride ND 25 6.3 ug/l
m,p-Xylene 126 50 6.3 ug/l
95-47-6 o-Xylene 8.1 25 6.3 ug/l J
1330-20-7 Xylene (total)134 75 13 ug/l
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
1868-53-7 Dibromofluoromethane 93%70-130%
17060-07-0 1,2-Dichloroethane-D4 84%70-130%
2037-26-5 Toluene-D8 102%70-130%
460-00-4 4-Bromofluorobenzene 102%70-130%
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
10 of 32
FA7135233.2
SGS North America Inc.
Report of Analysis Page 1 of 2
Client Sample ID:MW-2
Lab Sample ID:FA71352-3 Date Sampled:01/06/20
Matrix:AQ - Ground Water Date Received:01/07/20
Method:SM 6200B Percent Solids:n/a
Project:Ethco Service Station; 34970 US Hwy 264, Engelhard, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 A0220704.D 25 01/09/20 16:58 AB n/a n/a VA2668
Run #2
Purge Volume
Run #1 10.0 ml
Run #2
VOA 6200B List
CAS No.Compound Result RL MDL Units Q
71-43-2 Benzene 723 13 3.1 ug/l
108-86-1 Bromobenzene ND 13 3.1 ug/l
74-97-5 Bromochloromethane ND 13 3.1 ug/l
75-27-4 Bromodichloromethane ND 13 3.1 ug/l
75-25-2 Bromoform ND 13 3.1 ug/l
104-51-8 n-Butylbenzene ND 13 3.1 ug/l
135-98-8 sec-Butylbenzene ND 13 3.1 ug/l
98-06-6 tert-Butylbenzene ND 13 3.1 ug/l
56-23-5 Carbon Tetrachloride ND 13 3.1 ug/l
108-90-7 Chlorobenzene ND 13 3.1 ug/l
75-00-3 Chloroethane ND 13 5.0 ug/l
67-66-3 Chloroform 3.3 13 3.1 ug/l J
95-49-8 o-Chlorotoluene ND 13 3.1 ug/l
106-43-4 p-Chlorotoluene ND 13 3.1 ug/l
124-48-1 Dibromochloromethane ND 13 3.1 ug/l
96-12-8 1,2-Dibromo-3-chloropropane ND 13 6.2 ug/l
106-93-4 1,2-Dibromoethane ND 13 3.1 ug/l
75-71-8 Dichlorodifluoromethane ND 13 5.0 ug/l
95-50-1 1,2-Dichlorobenzene ND 13 3.1 ug/l
541-73-1 1,3-Dichlorobenzene ND 13 3.1 ug/l
106-46-7 1,4-Dichlorobenzene ND 13 3.1 ug/l
75-34-3 1,1-Dichloroethane ND 13 3.1 ug/l
107-06-2 1,2-Dichloroethane ND 13 3.1 ug/l
75-35-4 1,1-Dichloroethylene ND 13 3.1 ug/l
156-59-2 cis-1,2-Dichloroethylene 4.4 13 3.1 ug/l J
156-60-5 trans-1,2-Dichloroethylene ND 13 3.1 ug/l
78-87-5 1,2-Dichloropropane ND 13 3.1 ug/l
142-28-9 1,3-Dichloropropane ND 13 3.1 ug/l
594-20-7 2,2-Dichloropropane ND 13 3.1 ug/l
563-58-6 1,1-Dichloropropene ND 13 3.1 ug/l
10061-01-5 cis-1,3-Dichloropropene ND 13 3.1 ug/l
10061-02-6 trans-1,3-Dichloropropene ND 13 3.1 ug/l
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
11 of 32
FA7135233.3
SGS North America Inc.
Report of Analysis Page 2 of 2
Client Sample ID:MW-2
Lab Sample ID:FA71352-3 Date Sampled:01/06/20
Matrix:AQ - Ground Water Date Received:01/07/20
Method:SM 6200B Percent Solids:n/a
Project:Ethco Service Station; 34970 US Hwy 264, Engelhard, NC
VOA 6200B List
CAS No.Compound Result RL MDL Units Q
108-20-3 Di-Isopropyl Ether 3.6 13 3.1 ug/l J
100-41-4 Ethylbenzene ND 13 3.1 ug/l
87-68-3 Hexachlorobutadiene ND 13 3.1 ug/l
98-82-8 Isopropylbenzene ND 13 3.1 ug/l
99-87-6 p-Isopropyltoluene ND 13 3.1 ug/l
74-83-9 Methyl Bromide ND 13 5.0 ug/l
74-87-3 Methyl Chloride ND 13 5.0 ug/l
74-95-3 Methylene Bromide ND 13 3.1 ug/l
75-09-2 Methylene Chloride ND 50 25 ug/l
1634-04-4 Methyl Tert Butyl Ether 13.5 13 3.1 ug/l
91-20-3 Naphthalene ND 13 3.1 ug/l
103-65-1 n-Propylbenzene ND 13 3.1 ug/l
100-42-5 Styrene ND 13 3.1 ug/l
630-20-6 1,1,1,2-Tetrachloroethane ND 13 3.1 ug/l
79-34-5 1,1,2,2-Tetrachloroethane ND 13 3.1 ug/l
127-18-4 Tetrachloroethylene ND 13 3.1 ug/l
108-88-3 Toluene ND 13 3.1 ug/l
87-61-6 1,2,3-Trichlorobenzene ND 13 3.1 ug/l
120-82-1 1,2,4-Trichlorobenzene ND 13 3.1 ug/l
71-55-6 1,1,1-Trichloroethane ND 13 3.1 ug/l
79-00-5 1,1,2-Trichloroethane ND 13 3.1 ug/l
79-01-6 Trichloroethylene ND 13 3.1 ug/l
75-69-4 Trichlorofluoromethane ND 13 5.0 ug/l
96-18-4 1,2,3-Trichloropropane ND 13 3.1 ug/l
95-63-6 1,2,4-Trimethylbenzene ND 13 3.1 ug/l
108-67-8 1,3,5-Trimethylbenzene ND 13 3.1 ug/l
75-01-4 Vinyl Chloride ND 13 3.1 ug/l
m,p-Xylene ND 25 3.1 ug/l
95-47-6 o-Xylene ND 13 3.1 ug/l
1330-20-7 Xylene (total)ND 38 6.3 ug/l
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
1868-53-7 Dibromofluoromethane 98%70-130%
17060-07-0 1,2-Dichloroethane-D4 102%70-130%
2037-26-5 Toluene-D8 98%70-130%
460-00-4 4-Bromofluorobenzene 97%70-130%
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
12 of 32
FA7135233.3
SGS North America Inc.
Report of Analysis Page 1 of 2
Client Sample ID:RW-1
Lab Sample ID:FA71352-4 Date Sampled:01/06/20
Matrix:AQ - Ground Water Date Received:01/07/20
Method:SM 6200B Percent Solids:n/a
Project:Ethco Service Station; 34970 US Hwy 264, Engelhard, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 E102217.D 25 01/10/20 15:59 AB n/a n/a VE2262
Run #2
Purge Volume
Run #1 10.0 ml
Run #2
VOA 6200B List
CAS No.Compound Result RL MDL Units Q
71-43-2 Benzene 1060 13 3.1 ug/l
108-86-1 Bromobenzene ND 13 3.1 ug/l
74-97-5 Bromochloromethane ND 13 3.1 ug/l
75-27-4 Bromodichloromethane ND 13 3.1 ug/l
75-25-2 Bromoform ND 13 3.1 ug/l
104-51-8 n-Butylbenzene ND 13 3.1 ug/l
135-98-8 sec-Butylbenzene ND 13 3.1 ug/l
98-06-6 tert-Butylbenzene ND 13 3.1 ug/l
56-23-5 Carbon Tetrachloride ND 13 3.1 ug/l
108-90-7 Chlorobenzene ND 13 3.1 ug/l
75-00-3 Chloroethane ND 13 5.0 ug/l
67-66-3 Chloroform ND 13 3.1 ug/l
95-49-8 o-Chlorotoluene ND 13 3.1 ug/l
106-43-4 p-Chlorotoluene ND 13 3.1 ug/l
124-48-1 Dibromochloromethane ND 13 3.1 ug/l
96-12-8 1,2-Dibromo-3-chloropropane ND 13 6.2 ug/l
106-93-4 1,2-Dibromoethane ND 13 3.1 ug/l
75-71-8 Dichlorodifluoromethane ND 13 5.0 ug/l
95-50-1 1,2-Dichlorobenzene ND 13 3.1 ug/l
541-73-1 1,3-Dichlorobenzene ND 13 3.1 ug/l
106-46-7 1,4-Dichlorobenzene ND 13 3.1 ug/l
75-34-3 1,1-Dichloroethane ND 13 3.1 ug/l
107-06-2 1,2-Dichloroethane ND 13 3.1 ug/l
75-35-4 1,1-Dichloroethylene ND 13 3.1 ug/l
156-59-2 cis-1,2-Dichloroethylene ND 13 3.1 ug/l
156-60-5 trans-1,2-Dichloroethylene ND 13 3.1 ug/l
78-87-5 1,2-Dichloropropane ND 13 3.1 ug/l
142-28-9 1,3-Dichloropropane ND 13 3.1 ug/l
594-20-7 2,2-Dichloropropane ND 13 3.1 ug/l
563-58-6 1,1-Dichloropropene ND 13 3.1 ug/l
10061-01-5 cis-1,3-Dichloropropene ND 13 3.1 ug/l
10061-02-6 trans-1,3-Dichloropropene ND 13 3.1 ug/l
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
13 of 32
FA7135233.4
SGS North America Inc.
Report of Analysis Page 2 of 2
Client Sample ID:RW-1
Lab Sample ID:FA71352-4 Date Sampled:01/06/20
Matrix:AQ - Ground Water Date Received:01/07/20
Method:SM 6200B Percent Solids:n/a
Project:Ethco Service Station; 34970 US Hwy 264, Engelhard, NC
VOA 6200B List
CAS No.Compound Result RL MDL Units Q
108-20-3 Di-Isopropyl Ether 18.9 13 3.1 ug/l
100-41-4 Ethylbenzene ND 13 3.1 ug/l
87-68-3 Hexachlorobutadiene ND 13 3.1 ug/l
98-82-8 Isopropylbenzene 16.9 13 3.1 ug/l
99-87-6 p-Isopropyltoluene ND 13 3.1 ug/l
74-83-9 Methyl Bromide ND 13 5.0 ug/l
74-87-3 Methyl Chloride ND 13 5.0 ug/l
74-95-3 Methylene Bromide ND 13 3.1 ug/l
75-09-2 Methylene Chloride ND 50 25 ug/l
1634-04-4 Methyl Tert Butyl Ether 12.9 13 3.1 ug/l J
91-20-3 Naphthalene 29.5 13 3.1 ug/l
103-65-1 n-Propylbenzene 41.7 13 3.1 ug/l
100-42-5 Styrene ND 13 3.1 ug/l
630-20-6 1,1,1,2-Tetrachloroethane ND 13 3.1 ug/l
79-34-5 1,1,2,2-Tetrachloroethane ND 13 3.1 ug/l
127-18-4 Tetrachloroethylene ND 13 3.1 ug/l
108-88-3 Toluene 12.0 13 3.1 ug/l J
87-61-6 1,2,3-Trichlorobenzene ND 13 3.1 ug/l
120-82-1 1,2,4-Trichlorobenzene ND 13 3.1 ug/l
71-55-6 1,1,1-Trichloroethane ND 13 3.1 ug/l
79-00-5 1,1,2-Trichloroethane ND 13 3.1 ug/l
79-01-6 Trichloroethylene ND 13 3.1 ug/l
75-69-4 Trichlorofluoromethane ND 13 5.0 ug/l
96-18-4 1,2,3-Trichloropropane ND 13 3.1 ug/l
95-63-6 1,2,4-Trimethylbenzene ND 13 3.1 ug/l
108-67-8 1,3,5-Trimethylbenzene ND 13 3.1 ug/l
75-01-4 Vinyl Chloride ND 13 3.1 ug/l
m,p-Xylene 48.3 25 3.1 ug/l
95-47-6 o-Xylene 4.3 13 3.1 ug/l J
1330-20-7 Xylene (total)52.6 38 6.3 ug/l
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
1868-53-7 Dibromofluoromethane 92%70-130%
17060-07-0 1,2-Dichloroethane-D4 84%70-130%
2037-26-5 Toluene-D8 102%70-130%
460-00-4 4-Bromofluorobenzene 102%70-130%
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
14 of 32
FA7135233.4
SGS North America Inc.
Report of Analysis Page 1 of 2
Client Sample ID:MW-1
Lab Sample ID:FA71352-5 Date Sampled:01/06/20
Matrix:AQ - Ground Water Date Received:01/07/20
Method:SM 6200B Percent Solids:n/a
Project:Ethco Service Station; 34970 US Hwy 264, Engelhard, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 A0220706.D 100 01/09/20 17:44 AB n/a n/a VA2668
Run #2
Purge Volume
Run #1 10.0 ml
Run #2
VOA 6200B List
CAS No.Compound Result RL MDL Units Q
71-43-2 Benzene 1650 50 13 ug/l
108-86-1 Bromobenzene ND 50 13 ug/l
74-97-5 Bromochloromethane ND 50 13 ug/l
75-27-4 Bromodichloromethane ND 50 13 ug/l
75-25-2 Bromoform ND 50 13 ug/l
104-51-8 n-Butylbenzene 74.5 50 13 ug/l
135-98-8 sec-Butylbenzene 44.1 50 13 ug/l J
98-06-6 tert-Butylbenzene ND 50 13 ug/l
56-23-5 Carbon Tetrachloride ND 50 13 ug/l
108-90-7 Chlorobenzene ND 50 13 ug/l
75-00-3 Chloroethane ND 50 20 ug/l
67-66-3 Chloroform ND 50 13 ug/l
95-49-8 o-Chlorotoluene ND 50 13 ug/l
106-43-4 p-Chlorotoluene ND 50 13 ug/l
124-48-1 Dibromochloromethane ND 50 13 ug/l
96-12-8 1,2-Dibromo-3-chloropropane ND 50 25 ug/l
106-93-4 1,2-Dibromoethane ND 50 13 ug/l
75-71-8 Dichlorodifluoromethane ND 50 20 ug/l
95-50-1 1,2-Dichlorobenzene ND 50 13 ug/l
541-73-1 1,3-Dichlorobenzene ND 50 13 ug/l
106-46-7 1,4-Dichlorobenzene ND 50 13 ug/l
75-34-3 1,1-Dichloroethane ND 50 13 ug/l
107-06-2 1,2-Dichloroethane ND 50 13 ug/l
75-35-4 1,1-Dichloroethylene ND 50 13 ug/l
156-59-2 cis-1,2-Dichloroethylene ND 50 13 ug/l
156-60-5 trans-1,2-Dichloroethylene ND 50 13 ug/l
78-87-5 1,2-Dichloropropane ND 50 13 ug/l
142-28-9 1,3-Dichloropropane ND 50 13 ug/l
594-20-7 2,2-Dichloropropane ND 50 13 ug/l
563-58-6 1,1-Dichloropropene ND 50 13 ug/l
10061-01-5 cis-1,3-Dichloropropene ND 50 13 ug/l
10061-02-6 trans-1,3-Dichloropropene ND 50 13 ug/l
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
15 of 32
FA7135233.5
SGS North America Inc.
Report of Analysis Page 2 of 2
Client Sample ID:MW-1
Lab Sample ID:FA71352-5 Date Sampled:01/06/20
Matrix:AQ - Ground Water Date Received:01/07/20
Method:SM 6200B Percent Solids:n/a
Project:Ethco Service Station; 34970 US Hwy 264, Engelhard, NC
VOA 6200B List
CAS No.Compound Result RL MDL Units Q
108-20-3 Di-Isopropyl Ether ND 50 13 ug/l
100-41-4 Ethylbenzene 3180 50 13 ug/l
87-68-3 Hexachlorobutadiene ND 50 13 ug/l
98-82-8 Isopropylbenzene 244 50 13 ug/l
99-87-6 p-Isopropyltoluene 19.2 50 13 ug/l J
74-83-9 Methyl Bromide ND 50 20 ug/l
74-87-3 Methyl Chloride ND 50 20 ug/l
74-95-3 Methylene Bromide ND 50 13 ug/l
75-09-2 Methylene Chloride ND 200 100 ug/l
1634-04-4 Methyl Tert Butyl Ether ND 50 13 ug/l
91-20-3 Naphthalene 883 50 13 ug/l
103-65-1 n-Propylbenzene 740 50 13 ug/l
100-42-5 Styrene ND 50 13 ug/l
630-20-6 1,1,1,2-Tetrachloroethane ND 50 13 ug/l
79-34-5 1,1,2,2-Tetrachloroethane ND 50 13 ug/l
127-18-4 Tetrachloroethylene ND 50 13 ug/l
108-88-3 Toluene 206 50 13 ug/l
87-61-6 1,2,3-Trichlorobenzene ND 50 13 ug/l
120-82-1 1,2,4-Trichlorobenzene ND 50 13 ug/l
71-55-6 1,1,1-Trichloroethane ND 50 13 ug/l
79-00-5 1,1,2-Trichloroethane ND 50 13 ug/l
79-01-6 Trichloroethylene ND 50 13 ug/l
75-69-4 Trichlorofluoromethane ND 50 20 ug/l
96-18-4 1,2,3-Trichloropropane ND 50 13 ug/l
95-63-6 1,2,4-Trimethylbenzene 2750 50 13 ug/l
108-67-8 1,3,5-Trimethylbenzene 300 50 13 ug/l
75-01-4 Vinyl Chloride ND 50 13 ug/l
m,p-Xylene 1580 100 13 ug/l
95-47-6 o-Xylene 29.9 50 13 ug/l J
1330-20-7 Xylene (total)1610 150 25 ug/l
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
1868-53-7 Dibromofluoromethane 99%70-130%
17060-07-0 1,2-Dichloroethane-D4 105%70-130%
2037-26-5 Toluene-D8 98%70-130%
460-00-4 4-Bromofluorobenzene 95%70-130%
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
16 of 32
FA7135233.5
SGS North America Inc.
Misc. Forms
Custody Documents and Other Forms
Includes the following where applicable:
• Chain of Custody
Orlando, FL
Section 4
17 of 32
FA713524
FA71352: Chain of Custody
Page 1 of 2
18 of 32
FA7135244.1
Job Number:FA71352 Client:GRI
Date / Time Received:1/7/2020 10:15:00 AM Delivery Method:FED EX
Project:2911
Airbill #'s:1001891740910003281100100963777962
Cooler Information
1. Custody Seals Present
2. Custody Seals Intact
4. Cooler temp verification
3. Temp criteria achieved
5. Cooler media
IR Gun
Ice (Bag)
Trip Blank Information
1. Trip Blank present / cooler
2. Trip Blank listed on COC
2. Samples preserved properly
Sample Information
1. Sample labels present on bottles
5. Sample recvd within HT
4. Condition of sample
3. Sufficient volume/containers recvd for analysis:
Intact
Comments
SM001Rev. Date 05/24/17
SGS Sample Receipt Summary
Cooler Temps (Raw Measured) °C:
Cooler Temps (Corrected) °C:
Cooler 1: (2.3);
Cooler 1: (1.5);
3. Type Of TB Received
W or S N/A
6. Dates/Times/IDs on COC match Sample Label
7. VOCs have headspace
8. Bottles received for unspecified tests
9. Compositing instructions clear
10. Voa Soil Kits/Jars received past 48hrs?
11. % Solids Jar received?
Misc. Information
25-Gram 5-GramNumber of Encores:Number of 5035 Field Kits:Number of Lab Filtered Metals:
Test Strip Lot #s:pH 0-3 230315 pH 10-12 219813A Other: (Specify)
Y or N N/A
Y or N
Therm ID:IR 1; Therm CF:-0.8; # of Coolers:1
Y or N N/A
12. Residual Chlorine Present?
Residual Chlorine Test Strip Lot #:
Technician:Reviewer:SHAYLAP Date:Date:1/7/2020 10:15:00 AM
FA71352: Chain of Custody
Page 2 of 2
19 of 32
FA7135244.1
SGS North America Inc.
MS Volatiles
QC Data Summaries
Includes the following where applicable:
• Method Blank Summaries
• Blank Spike Summaries
• Matrix Spike and Duplicate Summaries
Orlando, FL
Section 5
20 of 32
FA713525
Method Blank Summary Page 1 of 2
Job Number:FA71352
Account:GRINCC GRI (Geological Resources Inc.)
Project:Ethco Service Station; 34970 US Hwy 264, Engelhard, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
VA2668-MB A0220685.D 1 01/09/20 AB n/a n/a VA2668
The QC reported here applies to the following samples:Method: SM 6200B
FA71352-1, FA71352-3, FA71352-5
CAS No.Compound Result RL MDL Units Q
71-43-2 Benzene ND 0.50 0.13 ug/l
108-86-1 Bromobenzene ND 0.50 0.13 ug/l
74-97-5 Bromochloromethane ND 0.50 0.13 ug/l
75-27-4 Bromodichloromethane ND 0.50 0.13 ug/l
75-25-2 Bromoform ND 0.50 0.13 ug/l
104-51-8 n-Butylbenzene ND 0.50 0.13 ug/l
135-98-8 sec-Butylbenzene ND 0.50 0.13 ug/l
98-06-6 tert-Butylbenzene ND 0.50 0.13 ug/l
56-23-5 Carbon Tetrachloride ND 0.50 0.13 ug/l
108-90-7 Chlorobenzene ND 0.50 0.13 ug/l
75-00-3 Chloroethane ND 0.50 0.20 ug/l
67-66-3 Chloroform ND 0.50 0.13 ug/l
95-49-8 o-Chlorotoluene ND 0.50 0.13 ug/l
106-43-4 p-Chlorotoluene ND 0.50 0.13 ug/l
124-48-1 Dibromochloromethane ND 0.50 0.13 ug/l
96-12-8 1,2-Dibromo-3-chloropropane ND 0.50 0.25 ug/l
106-93-4 1,2-Dibromoethane ND 0.50 0.13 ug/l
75-71-8 Dichlorodifluoromethane ND 0.50 0.20 ug/l
95-50-1 1,2-Dichlorobenzene ND 0.50 0.13 ug/l
541-73-1 1,3-Dichlorobenzene ND 0.50 0.13 ug/l
106-46-7 1,4-Dichlorobenzene ND 0.50 0.13 ug/l
75-34-3 1,1-Dichloroethane ND 0.50 0.13 ug/l
107-06-2 1,2-Dichloroethane ND 0.50 0.13 ug/l
75-35-4 1,1-Dichloroethylene ND 0.50 0.13 ug/l
156-59-2 cis-1,2-Dichloroethylene ND 0.50 0.13 ug/l
156-60-5 trans-1,2-Dichloroethylene ND 0.50 0.13 ug/l
78-87-5 1,2-Dichloropropane ND 0.50 0.13 ug/l
142-28-9 1,3-Dichloropropane ND 0.50 0.13 ug/l
594-20-7 2,2-Dichloropropane ND 0.50 0.13 ug/l
563-58-6 1,1-Dichloropropene ND 0.50 0.13 ug/l
10061-01-5 cis-1,3-Dichloropropene ND 0.50 0.13 ug/l
10061-02-6 trans-1,3-Dichloropropene ND 0.50 0.13 ug/l
108-20-3 Di-Isopropyl Ether ND 0.50 0.13 ug/l
100-41-4 Ethylbenzene ND 0.50 0.13 ug/l
87-68-3 Hexachlorobutadiene ND 0.50 0.13 ug/l
98-82-8 Isopropylbenzene ND 0.50 0.13 ug/l
21 of 32
FA7135255.1.1
Method Blank Summary Page 2 of 2
Job Number:FA71352
Account:GRINCC GRI (Geological Resources Inc.)
Project:Ethco Service Station; 34970 US Hwy 264, Engelhard, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
VA2668-MB A0220685.D 1 01/09/20 AB n/a n/a VA2668
The QC reported here applies to the following samples:Method: SM 6200B
FA71352-1, FA71352-3, FA71352-5
CAS No.Compound Result RL MDL Units Q
99-87-6 p-Isopropyltoluene ND 0.50 0.13 ug/l
74-83-9 Methyl Bromide ND 0.50 0.20 ug/l
74-87-3 Methyl Chloride ND 0.50 0.20 ug/l
74-95-3 Methylene Bromide ND 0.50 0.13 ug/l
75-09-2 Methylene Chloride ND 2.0 1.0 ug/l
1634-04-4 Methyl Tert Butyl Ether ND 0.50 0.13 ug/l
91-20-3 Naphthalene ND 0.50 0.13 ug/l
103-65-1 n-Propylbenzene ND 0.50 0.13 ug/l
100-42-5 Styrene ND 0.50 0.13 ug/l
630-20-6 1,1,1,2-Tetrachloroethane ND 0.50 0.13 ug/l
79-34-5 1,1,2,2-Tetrachloroethane ND 0.50 0.13 ug/l
127-18-4 Tetrachloroethylene ND 0.50 0.13 ug/l
108-88-3 Toluene ND 0.50 0.13 ug/l
87-61-6 1,2,3-Trichlorobenzene ND 0.50 0.13 ug/l
120-82-1 1,2,4-Trichlorobenzene ND 0.50 0.13 ug/l
71-55-6 1,1,1-Trichloroethane ND 0.50 0.13 ug/l
79-00-5 1,1,2-Trichloroethane ND 0.50 0.13 ug/l
79-01-6 Trichloroethylene ND 0.50 0.13 ug/l
75-69-4 Trichlorofluoromethane ND 0.50 0.20 ug/l
96-18-4 1,2,3-Trichloropropane ND 0.50 0.13 ug/l
95-63-6 1,2,4-Trimethylbenzene ND 0.50 0.13 ug/l
108-67-8 1,3,5-Trimethylbenzene ND 0.50 0.13 ug/l
75-01-4 Vinyl Chloride ND 0.50 0.13 ug/l
m,p-Xylene ND 1.0 0.13 ug/l
95-47-6 o-Xylene ND 0.50 0.13 ug/l
1330-20-7 Xylene (total)ND 1.5 0.25 ug/l
CAS No.Surrogate Recoveries Limits
1868-53-7 Dibromofluoromethane 99%70-130%
17060-07-0 1,2-Dichloroethane-D4 103%70-130%
2037-26-5 Toluene-D8 98%70-130%
460-00-4 4-Bromofluorobenzene 97%70-130%
22 of 32
FA7135255.1.1
Method Blank Summary Page 1 of 2
Job Number:FA71352
Account:GRINCC GRI (Geological Resources Inc.)
Project:Ethco Service Station; 34970 US Hwy 264, Engelhard, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
VE2262-MB E102201.D 1 01/10/20 AB n/a n/a VE2262
The QC reported here applies to the following samples:Method: SM 6200B
FA71352-2, FA71352-4
CAS No.Compound Result RL MDL Units Q
71-43-2 Benzene ND 0.50 0.13 ug/l
108-86-1 Bromobenzene ND 0.50 0.13 ug/l
74-97-5 Bromochloromethane ND 0.50 0.13 ug/l
75-27-4 Bromodichloromethane ND 0.50 0.13 ug/l
75-25-2 Bromoform ND 0.50 0.13 ug/l
104-51-8 n-Butylbenzene ND 0.50 0.13 ug/l
135-98-8 sec-Butylbenzene ND 0.50 0.13 ug/l
98-06-6 tert-Butylbenzene ND 0.50 0.13 ug/l
56-23-5 Carbon Tetrachloride ND 0.50 0.13 ug/l
108-90-7 Chlorobenzene ND 0.50 0.13 ug/l
75-00-3 Chloroethane ND 0.50 0.20 ug/l
67-66-3 Chloroform ND 0.50 0.13 ug/l
95-49-8 o-Chlorotoluene ND 0.50 0.13 ug/l
106-43-4 p-Chlorotoluene ND 0.50 0.13 ug/l
124-48-1 Dibromochloromethane ND 0.50 0.13 ug/l
96-12-8 1,2-Dibromo-3-chloropropane ND 0.50 0.25 ug/l
106-93-4 1,2-Dibromoethane ND 0.50 0.13 ug/l
75-71-8 Dichlorodifluoromethane ND 0.50 0.20 ug/l
95-50-1 1,2-Dichlorobenzene ND 0.50 0.13 ug/l
541-73-1 1,3-Dichlorobenzene ND 0.50 0.13 ug/l
106-46-7 1,4-Dichlorobenzene ND 0.50 0.13 ug/l
75-34-3 1,1-Dichloroethane ND 0.50 0.13 ug/l
107-06-2 1,2-Dichloroethane ND 0.50 0.13 ug/l
75-35-4 1,1-Dichloroethylene ND 0.50 0.13 ug/l
156-59-2 cis-1,2-Dichloroethylene ND 0.50 0.13 ug/l
156-60-5 trans-1,2-Dichloroethylene ND 0.50 0.13 ug/l
78-87-5 1,2-Dichloropropane ND 0.50 0.13 ug/l
142-28-9 1,3-Dichloropropane ND 0.50 0.13 ug/l
594-20-7 2,2-Dichloropropane ND 0.50 0.13 ug/l
563-58-6 1,1-Dichloropropene ND 0.50 0.13 ug/l
10061-01-5 cis-1,3-Dichloropropene ND 0.50 0.13 ug/l
10061-02-6 trans-1,3-Dichloropropene ND 0.50 0.13 ug/l
108-20-3 Di-Isopropyl Ether ND 0.50 0.13 ug/l
100-41-4 Ethylbenzene ND 0.50 0.13 ug/l
87-68-3 Hexachlorobutadiene ND 0.50 0.13 ug/l
98-82-8 Isopropylbenzene ND 0.50 0.13 ug/l
23 of 32
FA7135255.1.2
Method Blank Summary Page 2 of 2
Job Number:FA71352
Account:GRINCC GRI (Geological Resources Inc.)
Project:Ethco Service Station; 34970 US Hwy 264, Engelhard, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
VE2262-MB E102201.D 1 01/10/20 AB n/a n/a VE2262
The QC reported here applies to the following samples:Method: SM 6200B
FA71352-2, FA71352-4
CAS No.Compound Result RL MDL Units Q
99-87-6 p-Isopropyltoluene ND 0.50 0.13 ug/l
74-83-9 Methyl Bromide ND 0.50 0.20 ug/l
74-87-3 Methyl Chloride ND 0.50 0.20 ug/l
74-95-3 Methylene Bromide ND 0.50 0.13 ug/l
75-09-2 Methylene Chloride ND 2.0 1.0 ug/l
1634-04-4 Methyl Tert Butyl Ether ND 0.50 0.13 ug/l
91-20-3 Naphthalene ND 0.50 0.13 ug/l
103-65-1 n-Propylbenzene ND 0.50 0.13 ug/l
100-42-5 Styrene ND 0.50 0.13 ug/l
630-20-6 1,1,1,2-Tetrachloroethane ND 0.50 0.13 ug/l
79-34-5 1,1,2,2-Tetrachloroethane ND 0.50 0.13 ug/l
127-18-4 Tetrachloroethylene ND 0.50 0.13 ug/l
108-88-3 Toluene ND 0.50 0.13 ug/l
87-61-6 1,2,3-Trichlorobenzene ND 0.50 0.13 ug/l
120-82-1 1,2,4-Trichlorobenzene ND 0.50 0.13 ug/l
71-55-6 1,1,1-Trichloroethane ND 0.50 0.13 ug/l
79-00-5 1,1,2-Trichloroethane ND 0.50 0.13 ug/l
79-01-6 Trichloroethylene ND 0.50 0.13 ug/l
75-69-4 Trichlorofluoromethane ND 0.50 0.20 ug/l
96-18-4 1,2,3-Trichloropropane ND 0.50 0.13 ug/l
95-63-6 1,2,4-Trimethylbenzene ND 0.50 0.13 ug/l
108-67-8 1,3,5-Trimethylbenzene ND 0.50 0.13 ug/l
75-01-4 Vinyl Chloride ND 0.50 0.13 ug/l
m,p-Xylene ND 1.0 0.13 ug/l
95-47-6 o-Xylene ND 0.50 0.13 ug/l
1330-20-7 Xylene (total)ND 1.5 0.25 ug/l
CAS No.Surrogate Recoveries Limits
1868-53-7 Dibromofluoromethane 97%70-130%
17060-07-0 1,2-Dichloroethane-D4 94%70-130%
2037-26-5 Toluene-D8 100%70-130%
460-00-4 4-Bromofluorobenzene 101%70-130%
24 of 32
FA7135255.1.2
Blank Spike Summary Page 1 of 2
Job Number:FA71352
Account:GRINCC GRI (Geological Resources Inc.)
Project:Ethco Service Station; 34970 US Hwy 264, Engelhard, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
VA2668-BS A0220683.D 1 01/09/20 AB n/a n/a VA2668
The QC reported here applies to the following samples:Method: SM 6200B
FA71352-1, FA71352-3, FA71352-5
Spike BSP BSP
CAS No.Compound ug/l ug/l %Limits
71-43-2 Benzene 10 9.8 98 70-130
108-86-1 Bromobenzene 10 10.2 102 70-130
74-97-5 Bromochloromethane 10 9.1 91 70-130
75-27-4 Bromodichloromethane 10 10.0 100 70-130
75-25-2 Bromoform 10 9.4 94 70-130
104-51-8 n-Butylbenzene 10 11.1 111 70-130
135-98-8 sec-Butylbenzene 10 11.0 110 70-130
98-06-6 tert-Butylbenzene 10 10.5 105 70-130
56-23-5 Carbon Tetrachloride 10 10.6 106 70-130
108-90-7 Chlorobenzene 10 10.3 103 70-130
75-00-3 Chloroethane 10 9.5 95 60-140
67-66-3 Chloroform 10 10 100 70-130
95-49-8 o-Chlorotoluene 10 10.4 104 70-130
106-43-4 p-Chlorotoluene 10 10.3 103 70-130
124-48-1 Dibromochloromethane 10 9.9 99 70-130
96-12-8 1,2-Dibromo-3-chloropropane 10 8.4 84 70-130
106-93-4 1,2-Dibromoethane 10 9.9 99 70-130
75-71-8 Dichlorodifluoromethane 10 9.2 92 60-140
95-50-1 1,2-Dichlorobenzene 10 10.2 102 70-130
541-73-1 1,3-Dichlorobenzene 10 10.6 106 70-130
106-46-7 1,4-Dichlorobenzene 10 10.2 102 70-130
75-34-3 1,1-Dichloroethane 10 10 100 70-130
107-06-2 1,2-Dichloroethane 10 9.7 97 70-130
75-35-4 1,1-Dichloroethylene 10 9.9 99 70-130
156-59-2 cis-1,2-Dichloroethylene 10 9.8 98 70-130
156-60-5 trans-1,2-Dichloroethylene 10 9.8 98 70-130
78-87-5 1,2-Dichloropropane 10 10.0 100 70-130
142-28-9 1,3-Dichloropropane 10 9.5 95 70-130
594-20-7 2,2-Dichloropropane 10 10.3 103 70-130
563-58-6 1,1-Dichloropropene 10 10.5 105 70-130
10061-01-5 cis-1,3-Dichloropropene 10 9.2 92 70-130
10061-02-6 trans-1,3-Dichloropropene 10 9.7 97 70-130
108-20-3 Di-Isopropyl Ether 10 9.3 93 70-130
100-41-4 Ethylbenzene 10 10.2 102 70-130
87-68-3 Hexachlorobutadiene 10 10.9 109 70-130
98-82-8 Isopropylbenzene 10 10.9 109 70-130
* = Outside of Control Limits.
25 of 32
FA7135255.2.1
Blank Spike Summary Page 2 of 2
Job Number:FA71352
Account:GRINCC GRI (Geological Resources Inc.)
Project:Ethco Service Station; 34970 US Hwy 264, Engelhard, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
VA2668-BS A0220683.D 1 01/09/20 AB n/a n/a VA2668
The QC reported here applies to the following samples:Method: SM 6200B
FA71352-1, FA71352-3, FA71352-5
Spike BSP BSP
CAS No.Compound ug/l ug/l %Limits
99-87-6 p-Isopropyltoluene 10 10.9 109 70-130
74-83-9 Methyl Bromide 10 9.3 93 60-140
74-87-3 Methyl Chloride 10 10.3 103 60-140
74-95-3 Methylene Bromide 10 9.8 98 70-130
75-09-2 Methylene Chloride 10 9.6 96 70-130
1634-04-4 Methyl Tert Butyl Ether 10 9.3 93 70-130
91-20-3 Naphthalene 10 9.8 98 70-130
103-65-1 n-Propylbenzene 10 10.5 105 70-130
100-42-5 Styrene 10 10.2 102 70-130
630-20-6 1,1,1,2-Tetrachloroethane 10 10.3 103 70-130
79-34-5 1,1,2,2-Tetrachloroethane 10 9.9 99 70-130
127-18-4 Tetrachloroethylene 10 11.0 110 70-130
108-88-3 Toluene 10 10.1 101 70-130
87-61-6 1,2,3-Trichlorobenzene 10 10.2 102 70-130
120-82-1 1,2,4-Trichlorobenzene 10 10.3 103 70-130
71-55-6 1,1,1-Trichloroethane 10 10.3 103 70-130
79-00-5 1,1,2-Trichloroethane 10 9.8 98 70-130
79-01-6 Trichloroethylene 10 10.1 101 70-130
75-69-4 Trichlorofluoromethane 10 10.7 107 60-140
96-18-4 1,2,3-Trichloropropane 10 9.5 95 70-130
95-63-6 1,2,4-Trimethylbenzene 10 10.1 101 70-130
108-67-8 1,3,5-Trimethylbenzene 10 10.4 104 70-130
75-01-4 Vinyl Chloride 10 8.9 89 60-140
m,p-Xylene 20 20.7 104 70-130
95-47-6 o-Xylene 10 10.0 100 70-130
1330-20-7 Xylene (total)30 30.7 102 70-130
CAS No.Surrogate Recoveries BSP Limits
1868-53-7 Dibromofluoromethane 99%70-130%
17060-07-0 1,2-Dichloroethane-D4 99%70-130%
2037-26-5 Toluene-D8 99%70-130%
460-00-4 4-Bromofluorobenzene 99%70-130%
* = Outside of Control Limits.
26 of 32
FA7135255.2.1
Blank Spike Summary Page 1 of 2
Job Number:FA71352
Account:GRINCC GRI (Geological Resources Inc.)
Project:Ethco Service Station; 34970 US Hwy 264, Engelhard, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
VE2262-BS E102199.D 1 01/10/20 AB n/a n/a VE2262
The QC reported here applies to the following samples:Method: SM 6200B
FA71352-2, FA71352-4
Spike BSP BSP
CAS No.Compound ug/l ug/l %Limits
71-43-2 Benzene 10 9.8 98 70-130
108-86-1 Bromobenzene 10 10.5 105 70-130
74-97-5 Bromochloromethane 10 9.1 91 70-130
75-27-4 Bromodichloromethane 10 9.7 97 70-130
75-25-2 Bromoform 10 10.2 102 70-130
104-51-8 n-Butylbenzene 10 10.1 101 70-130
135-98-8 sec-Butylbenzene 10 10.3 103 70-130
98-06-6 tert-Butylbenzene 10 9.8 98 70-130
56-23-5 Carbon Tetrachloride 10 10.3 103 70-130
108-90-7 Chlorobenzene 10 10.2 102 70-130
75-00-3 Chloroethane 10 8.4 84 60-140
67-66-3 Chloroform 10 9.4 94 70-130
95-49-8 o-Chlorotoluene 10 11.1 111 70-130
106-43-4 p-Chlorotoluene 10 9.9 99 70-130
124-48-1 Dibromochloromethane 10 10.2 102 70-130
96-12-8 1,2-Dibromo-3-chloropropane 10 8.4 84 70-130
106-93-4 1,2-Dibromoethane 10 9.9 99 70-130
75-71-8 Dichlorodifluoromethane 10 8.5 85 60-140
95-50-1 1,2-Dichlorobenzene 10 10.3 103 70-130
541-73-1 1,3-Dichlorobenzene 10 10.8 108 70-130
106-46-7 1,4-Dichlorobenzene 10 10.2 102 70-130
75-34-3 1,1-Dichloroethane 10 9.7 97 70-130
107-06-2 1,2-Dichloroethane 10 9.1 91 70-130
75-35-4 1,1-Dichloroethylene 10 9.2 92 70-130
156-59-2 cis-1,2-Dichloroethylene 10 9.8 98 70-130
156-60-5 trans-1,2-Dichloroethylene 10 9.4 94 70-130
78-87-5 1,2-Dichloropropane 10 10.0 100 70-130
142-28-9 1,3-Dichloropropane 10 9.9 99 70-130
594-20-7 2,2-Dichloropropane 10 10.4 104 70-130
563-58-6 1,1-Dichloropropene 10 9.4 94 70-130
10061-01-5 cis-1,3-Dichloropropene 10 9.3 93 70-130
10061-02-6 trans-1,3-Dichloropropene 10 10.2 102 70-130
108-20-3 Di-Isopropyl Ether 10 9.7 97 70-130
100-41-4 Ethylbenzene 10 10.6 106 70-130
87-68-3 Hexachlorobutadiene 10 10.5 105 70-130
98-82-8 Isopropylbenzene 10 10.2 102 70-130
* = Outside of Control Limits.
27 of 32
FA7135255.2.2
Blank Spike Summary Page 2 of 2
Job Number:FA71352
Account:GRINCC GRI (Geological Resources Inc.)
Project:Ethco Service Station; 34970 US Hwy 264, Engelhard, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
VE2262-BS E102199.D 1 01/10/20 AB n/a n/a VE2262
The QC reported here applies to the following samples:Method: SM 6200B
FA71352-2, FA71352-4
Spike BSP BSP
CAS No.Compound ug/l ug/l %Limits
99-87-6 p-Isopropyltoluene 10 10.1 101 70-130
74-83-9 Methyl Bromide 10 8.9 89 60-140
74-87-3 Methyl Chloride 10 9.2 92 60-140
74-95-3 Methylene Bromide 10 9.2 92 70-130
75-09-2 Methylene Chloride 10 9.0 90 70-130
1634-04-4 Methyl Tert Butyl Ether 10 9.4 94 70-130
91-20-3 Naphthalene 10 9.0 90 70-130
103-65-1 n-Propylbenzene 10 11.3 113 70-130
100-42-5 Styrene 10 9.4 94 70-130
630-20-6 1,1,1,2-Tetrachloroethane 10 10.1 101 70-130
79-34-5 1,1,2,2-Tetrachloroethane 10 10.2 102 70-130
127-18-4 Tetrachloroethylene 10 10.7 107 70-130
108-88-3 Toluene 10 10.3 103 70-130
87-61-6 1,2,3-Trichlorobenzene 10 9.2 92 70-130
120-82-1 1,2,4-Trichlorobenzene 10 9.3 93 70-130
71-55-6 1,1,1-Trichloroethane 10 9.6 96 70-130
79-00-5 1,1,2-Trichloroethane 10 10.0 100 70-130
79-01-6 Trichloroethylene 10 9.8 98 70-130
75-69-4 Trichlorofluoromethane 10 8.4 84 60-140
96-18-4 1,2,3-Trichloropropane 10 10 100 70-130
95-63-6 1,2,4-Trimethylbenzene 10 9.6 96 70-130
108-67-8 1,3,5-Trimethylbenzene 10 10 100 70-130
75-01-4 Vinyl Chloride 10 8.4 84 60-140
m,p-Xylene 20 21.8 109 70-130
95-47-6 o-Xylene 10 9.5 95 70-130
1330-20-7 Xylene (total)30 31.3 104 70-130
CAS No.Surrogate Recoveries BSP Limits
1868-53-7 Dibromofluoromethane 97%70-130%
17060-07-0 1,2-Dichloroethane-D4 95%70-130%
2037-26-5 Toluene-D8 101%70-130%
460-00-4 4-Bromofluorobenzene 103%70-130%
* = Outside of Control Limits.
28 of 32
FA7135255.2.2
Matrix Spike/Matrix Spike Duplicate Summary Page 1 of 2
Job Number:FA71352
Account:GRINCC GRI (Geological Resources Inc.)
Project:Ethco Service Station; 34970 US Hwy 264, Engelhard, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
FA71332-1MS A0220698.D 5 01/09/20 AB n/a n/a VA2668
FA71332-1MSD A0220699.D 5 01/09/20 AB n/a n/a VA2668
FA71332-1 A0220688.D 1 01/09/20 AB n/a n/a VA2668
The QC reported here applies to the following samples:Method: SM 6200B
FA71352-1, FA71352-3, FA71352-5
FA71332-1 Spike MS MS Spike MSD MSD Limits
CAS No.Compound ug/l Q ug/l ug/l %ug/l ug/l %RPD Rec/RPD
71-43-2 Benzene ND 50 49.4 99 50 50.6 101 2 70-130/20
108-86-1 Bromobenzene ND 50 51.4 103 50 51.6 103 0 70-130/20
74-97-5 Bromochloromethane ND 50 47.3 95 50 48.5 97 3 70-130/20
75-27-4 Bromodichloromethane ND 50 49.8 100 50 50.8 102 2 70-130/20
75-25-2 Bromoform ND 50 44.5 89 50 44.4 89 0 70-130/20
104-51-8 n-Butylbenzene ND 50 53.6 107 50 55.2 110 3 70-130/20
135-98-8 sec-Butylbenzene ND 50 54.1 108 50 55.2 110 2 70-130/20
98-06-6 tert-Butylbenzene ND 50 51.4 103 50 53.0 106 3 70-130/20
56-23-5 Carbon Tetrachloride ND 50 53.6 107 50 54.9 110 2 70-130/20
108-90-7 Chlorobenzene ND 50 51.4 103 50 52.1 104 1 70-130/20
75-00-3 Chloroethane ND 50 53.2 106 50 49.3 99 8 60-140/20
67-66-3 Chloroform 0.24 J 50 50.6 101 50 52.5 105 4 70-130/20
95-49-8 o-Chlorotoluene ND 50 51.8 104 50 52.7 105 2 70-130/20
106-43-4 p-Chlorotoluene ND 50 50.5 101 50 51.5 103 2 70-130/20
124-48-1 Dibromochloromethane ND 50 48.5 97 50 48.3 97 0 70-130/20
96-12-8 1,2-Dibromo-3-chloropropane ND 50 44.7 89 50 45.0 90 1 70-130/20
106-93-4 1,2-Dibromoethane ND 50 49.3 99 50 50.0 100 1 70-130/20
75-71-8 Dichlorodifluoromethane ND 50 48.3 97 50 49.2 98 2 60-140/20
95-50-1 1,2-Dichlorobenzene ND 50 49.6 99 50 52.1 104 5 70-130/20
541-73-1 1,3-Dichlorobenzene ND 50 52.2 104 50 52.9 106 1 70-130/20
106-46-7 1,4-Dichlorobenzene ND 50 50.5 101 50 52.0 104 3 70-130/20
75-34-3 1,1-Dichloroethane ND 50 50.7 101 50 52.6 105 4 70-130/20
107-06-2 1,2-Dichloroethane ND 50 50.3 101 50 51.4 103 2 70-130/20
75-35-4 1,1-Dichloroethylene ND 50 50.7 101 50 51.9 104 2 70-130/20
156-59-2 cis-1,2-Dichloroethylene ND 50 49.1 98 50 50.5 101 3 70-130/20
156-60-5 trans-1,2-Dichloroethylene ND 50 49.8 100 50 50.5 101 1 70-130/20
78-87-5 1,2-Dichloropropane ND 50 51.1 102 50 50.7 101 1 70-130/20
142-28-9 1,3-Dichloropropane ND 50 48.3 97 50 48.2 96 0 70-130/20
594-20-7 2,2-Dichloropropane ND 50 54.0 108 50 52.9 106 2 70-130/20
563-58-6 1,1-Dichloropropene ND 50 52.4 105 50 53.4 107 2 70-130/20
10061-01-5 cis-1,3-Dichloropropene ND 50 43.6 87 50 42.5 85 3 70-130/20
10061-02-6 trans-1,3-Dichloropropene ND 50 47.3 95 50 45.6 91 4 70-130/20
108-20-3 Di-Isopropyl Ether ND 50 47.5 95 50 48.9 98 3 70-130/20
100-41-4 Ethylbenzene ND 50 51.3 103 50 52.3 105 2 70-130/20
87-68-3 Hexachlorobutadiene ND 50 50.1 100 50 53.9 108 7 70-130/20
98-82-8 Isopropylbenzene ND 50 53.8 108 50 55.8 112 4 70-130/20
* = Outside of Control Limits.
29 of 32
FA7135255.3.1
Matrix Spike/Matrix Spike Duplicate Summary Page 2 of 2
Job Number:FA71352
Account:GRINCC GRI (Geological Resources Inc.)
Project:Ethco Service Station; 34970 US Hwy 264, Engelhard, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
FA71332-1MS A0220698.D 5 01/09/20 AB n/a n/a VA2668
FA71332-1MSD A0220699.D 5 01/09/20 AB n/a n/a VA2668
FA71332-1 A0220688.D 1 01/09/20 AB n/a n/a VA2668
The QC reported here applies to the following samples:Method: SM 6200B
FA71352-1, FA71352-3, FA71352-5
FA71332-1 Spike MS MS Spike MSD MSD Limits
CAS No.Compound ug/l Q ug/l ug/l %ug/l ug/l %RPD Rec/RPD
99-87-6 p-Isopropyltoluene ND 50 53.1 106 50 54.5 109 3 70-130/20
74-83-9 Methyl Bromide ND 50 49.0 98 50 48.0 96 2 60-140/20
74-87-3 Methyl Chloride ND 50 52.8 106 50 54.2 108 3 60-140/20
74-95-3 Methylene Bromide ND 50 49.7 99 50 50.9 102 2 70-130/20
75-09-2 Methylene Chloride ND 50 53.3 107 50 55.0 110 3 70-130/20
1634-04-4 Methyl Tert Butyl Ether ND 50 47.7 95 50 48.5 97 2 70-130/20
91-20-3 Naphthalene ND 50 46.1 92 50 49.3 99 7 70-130/20
103-65-1 n-Propylbenzene ND 50 51.7 103 50 52.5 105 2 70-130/20
100-42-5 Styrene ND 50 49.3 99 50 50.2 100 2 70-130/20
630-20-6 1,1,1,2-Tetrachloroethane ND 50 51.0 102 50 52.6 105 3 70-130/20
79-34-5 1,1,2,2-Tetrachloroethane ND 50 50.5 101 50 51.4 103 2 70-130/20
127-18-4 Tetrachloroethylene ND 50 54.0 108 50 54.9 110 2 70-130/20
108-88-3 Toluene ND 50 50.6 101 50 51.3 103 1 70-130/20
87-61-6 1,2,3-Trichlorobenzene ND 50 49.0 98 50 51.9 104 6 70-130/20
120-82-1 1,2,4-Trichlorobenzene ND 50 49.0 98 50 51.9 104 6 70-130/20
71-55-6 1,1,1-Trichloroethane ND 50 52.5 105 50 54.3 109 3 70-130/20
79-00-5 1,1,2-Trichloroethane ND 50 49.7 99 50 50.2 100 1 70-130/20
79-01-6 Trichloroethylene ND 50 50.3 101 50 51.5 103 2 70-130/20
75-69-4 Trichlorofluoromethane ND 50 57.7 115 50 57.9 116 0 60-140/20
96-18-4 1,2,3-Trichloropropane ND 50 48.8 98 50 49.8 100 2 70-130/20
95-63-6 1,2,4-Trimethylbenzene ND 50 49.5 99 50 51.0 102 3 70-130/20
108-67-8 1,3,5-Trimethylbenzene ND 50 51.4 103 50 53.0 106 3 70-130/20
75-01-4 Vinyl Chloride ND 50 47.1 94 50 47.0 94 0 60-140/20
m,p-Xylene ND 100 102 102 100 105 105 3 70-130/20
95-47-6 o-Xylene ND 50 49.3 99 50 51.2 102 4 70-130/20
1330-20-7 Xylene (total)ND 150 152 101 150 156 104 3 70-130/20
CAS No.Surrogate Recoveries MS MSD FA71332-1 Limits
1868-53-7 Dibromofluoromethane 101%103%100%70-130%
17060-07-0 1,2-Dichloroethane-D4 105%104%104%70-130%
2037-26-5 Toluene-D8 99%98%93%70-130%
460-00-4 4-Bromofluorobenzene 98%97%96%70-130%
* = Outside of Control Limits.
30 of 32
FA7135255.3.1
Matrix Spike/Matrix Spike Duplicate Summary Page 1 of 2
Job Number:FA71352
Account:GRINCC GRI (Geological Resources Inc.)
Project:Ethco Service Station; 34970 US Hwy 264, Engelhard, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
FA71366-3MS E102209.D 5 01/10/20 AB n/a n/a VE2262
FA71366-3MSD E102210.D 5 01/10/20 AB n/a n/a VE2262
FA71366-3 E102202.D 1 01/10/20 AB n/a n/a VE2262
The QC reported here applies to the following samples:Method: SM 6200B
FA71352-2, FA71352-4
FA71366-3 Spike MS MS Spike MSD MSD Limits
CAS No.Compound ug/l Q ug/l ug/l %ug/l ug/l %RPD Rec/RPD
71-43-2 Benzene 2.5 50 49.2 93 50 48.1 91 2 70-130/20
108-86-1 Bromobenzene ND 50 49.6 99 50 50.6 101 2 70-130/20
74-97-5 Bromochloromethane ND 50 42.9 86 50 41.2 82 4 70-130/20
75-27-4 Bromodichloromethane ND 50 40.0 80 50 39.2 78 2 70-130/20
75-25-2 Bromoform ND 50 28.6 57*50 27.9 56*2 70-130/20
104-51-8 n-Butylbenzene 2.6 50 51.9 99 50 51.2 97 1 70-130/20
135-98-8 sec-Butylbenzene 1.1 50 50.8 99 50 50.6 99 0 70-130/20
98-06-6 tert-Butylbenzene ND 50 47.3 95 50 47.0 94 1 70-130/20
56-23-5 Carbon Tetrachloride ND 50 47.5 95 50 43.3 87 9 70-130/20
108-90-7 Chlorobenzene ND 50 48.5 97 50 47.4 95 2 70-130/20
75-00-3 Chloroethane 0.33 J 50 39.2 78 50 39.6 79 1 60-140/20
67-66-3 Chloroform ND 50 45.6 91 50 43.0 86 6 70-130/20
95-49-8 o-Chlorotoluene ND 50 53.3 107 50 52.9 106 1 70-130/20
106-43-4 p-Chlorotoluene ND 50 46.9 94 50 47.5 95 1 70-130/20
124-48-1 Dibromochloromethane ND 50 36.1 72 50 35.2 70 3 70-130/20
96-12-8 1,2-Dibromo-3-chloropropane ND 50 46.7 93 50 45.7 91 2 70-130/20
106-93-4 1,2-Dibromoethane ND 50 48.2 96 50 48.1 96 0 70-130/20
75-71-8 Dichlorodifluoromethane ND 50 42.9 86 50 41.0 82 5 60-140/20
95-50-1 1,2-Dichlorobenzene ND 50 49.9 100 50 49.1 98 2 70-130/20
541-73-1 1,3-Dichlorobenzene ND 50 51.7 103 50 51.5 103 0 70-130/20
106-46-7 1,4-Dichlorobenzene ND 50 48.7 97 50 48.3 97 1 70-130/20
75-34-3 1,1-Dichloroethane ND 50 46.3 93 50 44.4 89 4 70-130/20
107-06-2 1,2-Dichloroethane ND 50 43.7 87 50 41.1 82 6 70-130/20
75-35-4 1,1-Dichloroethylene ND 50 43.8 88 50 40.3 81 8 70-130/20
156-59-2 cis-1,2-Dichloroethylene ND 50 47.1 94 50 45.6 91 3 70-130/20
156-60-5 trans-1,2-Dichloroethylene ND 50 44.7 89 50 42.3 85 6 70-130/20
78-87-5 1,2-Dichloropropane ND 50 48.8 98 50 48.7 97 0 70-130/20
142-28-9 1,3-Dichloropropane ND 50 48.3 97 50 48.2 96 0 70-130/20
594-20-7 2,2-Dichloropropane ND 50 46.7 93 50 42.3 85 10 70-130/20
563-58-6 1,1-Dichloropropene ND 50 44.9 90 50 42.9 86 5 70-130/20
10061-01-5 cis-1,3-Dichloropropene ND 50 39.7 79 50 39.1 78 2 70-130/20
10061-02-6 trans-1,3-Dichloropropene ND 50 44.1 88 50 43.2 86 2 70-130/20
108-20-3 Di-Isopropyl Ether 0.79 50 47.2 93 50 46.1 91 2 70-130/20
100-41-4 Ethylbenzene 0.99 50 51.4 101 50 49.8 98 3 70-130/20
87-68-3 Hexachlorobutadiene ND 50 53.9 108 50 51.9 104 4 70-130/20
98-82-8 Isopropylbenzene 0.36 J 50 49.7 99 50 47.9 95 4 70-130/20
* = Outside of Control Limits.
31 of 32
FA7135255.3.2
Matrix Spike/Matrix Spike Duplicate Summary Page 2 of 2
Job Number:FA71352
Account:GRINCC GRI (Geological Resources Inc.)
Project:Ethco Service Station; 34970 US Hwy 264, Engelhard, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
FA71366-3MS E102209.D 5 01/10/20 AB n/a n/a VE2262
FA71366-3MSD E102210.D 5 01/10/20 AB n/a n/a VE2262
FA71366-3 E102202.D 1 01/10/20 AB n/a n/a VE2262
The QC reported here applies to the following samples:Method: SM 6200B
FA71352-2, FA71352-4
FA71366-3 Spike MS MS Spike MSD MSD Limits
CAS No.Compound ug/l Q ug/l ug/l %ug/l ug/l %RPD Rec/RPD
99-87-6 p-Isopropyltoluene 2.1 50 51.4 99 50 50.7 97 1 70-130/20
74-83-9 Methyl Bromide ND 50 43.0 86 50 41.7 83 3 60-140/20
74-87-3 Methyl Chloride 0.21 J 50 45.0 90 50 44.4 88 1 60-140/20
74-95-3 Methylene Bromide ND 50 45.5 91 50 44.1 88 3 70-130/20
75-09-2 Methylene Chloride ND 50 43.4 87 50 41.2 82 5 70-130/20
1634-04-4 Methyl Tert Butyl Ether ND 50 43.5 87 50 41.8 84 4 70-130/20
91-20-3 Naphthalene ND 50 50.1 100 50 50.2 100 0 70-130/20
103-65-1 n-Propylbenzene 1.2 50 55.4 108 50 55.5 109 0 70-130/20
100-42-5 Styrene ND 50 42.1 84 50 41.2 82 2 70-130/20
630-20-6 1,1,1,2-Tetrachloroethane ND 50 47.3 95 50 45.0 90 5 70-130/20
79-34-5 1,1,2,2-Tetrachloroethane ND 50 49.8 100 50 51.0 102 2 70-130/20
127-18-4 Tetrachloroethylene ND 50 50.8 102 50 49.1 98 3 70-130/20
108-88-3 Toluene 2.4 50 50.7 97 50 49.8 95 2 70-130/20
87-61-6 1,2,3-Trichlorobenzene ND 50 48.1 96 50 46.9 94 3 70-130/20
120-82-1 1,2,4-Trichlorobenzene ND 50 49.6 99 50 48.5 97 2 70-130/20
71-55-6 1,1,1-Trichloroethane ND 50 46.0 92 50 42.7 85 7 70-130/20
79-00-5 1,1,2-Trichloroethane ND 50 48.5 97 50 48.4 97 0 70-130/20
79-01-6 Trichloroethylene ND 50 47.5 95 50 45.4 91 5 70-130/20
75-69-4 Trichlorofluoromethane ND 50 39.8 80 50 37.9 76 5 60-140/20
96-18-4 1,2,3-Trichloropropane ND 50 48.9 98 50 47.9 96 2 70-130/20
95-63-6 1,2,4-Trimethylbenzene 8.5 50 54.1 91 50 53.4 90 1 70-130/20
108-67-8 1,3,5-Trimethylbenzene 1.4 50 49.8 97 50 49.0 95 2 70-130/20
75-01-4 Vinyl Chloride ND 50 39.5 79 50 41.4 83 5 60-140/20
m,p-Xylene 3.5 100 107 104 100 104 101 3 70-130/20
95-47-6 o-Xylene 2.4 50 48.7 93 50 47.2 90 3 70-130/20
1330-20-7 Xylene (total)5.8 150 156 100 150 151 97 3 70-130/20
CAS No.Surrogate Recoveries MS MSD FA71366-3 Limits
1868-53-7 Dibromofluoromethane 97%93%97%70-130%
17060-07-0 1,2-Dichloroethane-D4 97%92%95%70-130%
2037-26-5 Toluene-D8 100%100%97%70-130%
460-00-4 4-Bromofluorobenzene 102%107%103%70-130%
* = Outside of Control Limits.
32 of 32
FA7135255.3.2

APPENDIX C
Contaminant Mass Calculations

Area ID Well IDs Area (ft²)Water Column
Height (ft)Volume (ft³)Volume (L)Effective
Porosity
Effective
Volume (L)
1 MW-9 5,335.6 13.38 71,390 2,021,542 444,739
2 RW-1 4,729.1 24.00 113,499 3,213,918 707,062
MW-1
MW-2
MW-7
Area Date Well Benzene Toluene Ethylbenzene Xylenes MTBE Naphthalene Total DTW Total Average
Mass (g)Percent Red.To Date Red.
04/28/10 26.20 1.57 2.92 16.20 8.46 156.00 211.35 1.62 94.00 ------
07/30/19 1.90 0.99 1.40 4.60 4.40 27.10 40.39 1.76 17.96 80.9%80.9%
01/06/20 1.90 0.99 1.40 4.60 4.40 27.10 40.39 1.76 17.96 0.0%80.9%
04/28/10 ---------------------------------
07/30/19 2690.00 29.70 0.00 62.10 0.00 29.60 2811.40 9.87 1,987.84 ------
01/06/20 1060.00 12.00 0.00 52.60 12.90 29.50 1167.00 2.00 825.14 140.9%58.5%
MW-1 1420.00 2390.00 5440.00 16800.00 0.00 1580.00 27630.00 2.87
MW-2 1520.00 3.83 4.08 6.72 84.00 0.00 1618.63 2.80
MW-7 3550.00 47.20 779.00 173.00 2220.00 63.80 6833.00 0.70
Avg.2163.33 813.68 2074.36 5659.91 768.00 547.93 12027.21 2.12
MW-1 1840.00 184.00 3440.00 1750.00 0.00 650.00 7864.00 2.74
MW-2 1230.00 6.10 0.00 0.00 10.20 0.00 1246.30 2.31
MW-7 0.28 0.54 0.00 0.66 13.90 0.23 15.61 1.70
Avg.1023.43 63.55 1146.67 583.55 8.03 216.74 3041.97 2.25
MW-1 1650.00 206.00 3180.00 1610.00 0.00 883.00 7529.00 2.21
MW-2 723.00 0.00 0.00 0.00 13.50 0.00 736.50 0.62
MW-7 2130.00 27.10 296.00 134.00 1120.00 128.00 3835.10 1.24
Avg.1501.00 77.70 1158.67 581.33 377.83 337.00 4033.53 1.36
Date
04/02/10
07/30/19
01/06/20
To Date:64.6%
Notes:
• Baseline contaminant mass was calculated using the maximum water column observed as well as the maximum historical dissolved phase contaminant concentrations.
• Since RW-1 was not sampled in April 2010, the sampling results from July 2019 are used as assumed values for the April 2010 event.
• Values shaded in yellow indicate a sampling event where a well was not sampled. The last known contaminant concentrations were used for contaminant mass calculations.
01/06/20 1,869.84 -32.6%
3,415.98 55.4%55.4%
7,657.34 ------
Area 1
Area 2 RW-1
MW-9
APPENDIX C
PERCENTAGE REDUCTIONS
ETHCO SERVICE STATION (INCIDENT NO. 12709/38758)
0.22
3 5,455.6 13.64 74,414 2,107,158 463,575
2,712.95 20.6%64.6%
66.5%
Area 3
04/28/10 ---
07/30/19 1,410.18 74.7%74.7%
Total Contaminant Mass (g)Percent Reduction Compared
to Previous Event Percent Reduction To Date
5,575.51 ---