AS-813_9644_CA_MRP_20171212

Arcadis U.S., Inc.
111-D Sanders Lane
Tel [phone]
Fax [phone]
www.arcadis.com
Page:
1/1
Attn: Mr. Michael Streeter
NCDEQ – UST Section
Asheville Regional Office
2090 US Highway 70
Swannanoa, North Carolina 28778

Subject:
Annual Corrective Action Plan Monitoring Report – 2017
Former ExxonMobil Facility #45552
1920 Chimney Rock Highway
Hendersonville, North Carolina
Incident Number: 9644
Risk Classification: Intermediate

Dear Mr. Streeter:

On behalf of ExxonMobil Environmental Services (EMES), Arcadis G&M of North
Carolina, Inc. (Arcadis) is submitting the attached Annual Corrective Action Plan
Monitoring Report – 2017 dated December 4, 2017 for the above referenced site.
An electronic copy of this report including the associated laboratory analytical
report is included with the attached CD.
Please contact me at [phone] with any questions or concerns related to
the Report or this incident number.
Sincerely,
Arcadis G&M of North Carolina, Inc.

Paul Goodell, E.I.
AFS Project Manager 5

Copies:
Ms. Calista Campbell – ExxonMobil
File – EM #45552
ENVIRONMENT

Date:
December 12, 2017

Contact:
Paul Goodell
Phone:
919.415.2327

Email:
[e-mail]

Our ref:
B0085851.0039

ExxonMobil Environmental Services Company
ANNUAL CORRECTIVE ACTION
PLAN MONITORING REPORT - 2017
Former ExxonMobil Facility #45552
1920 Chimney Rock Road
Hendersonville, Henderson County, North Carolina
Groundwater Incident #9644

December 2017

Annual Corrective Action Plan Monitoring Report – 2017
arcadis.com
CONTENTS
Executive Summary ....................................................................................................................................... 1
1.0 Site History and Characterization ............................................................................................................ 4
2.0 Free Product Recovery ........................................................................................................................... 6
3.0 Groundwater Monitoring ......................................................................................................................... 7
3.1 Groundwater Gauging ................................................................................................................ 7
3.2 Groundwater Sampling ............................................................................................................... 7
3.3 Groundwater Analytical Results ................................................................................................. 8
4.0 Site remediation ..................................................................................................................................... 10
5.0 Conclusions and Recommendations .................................................................................................... 11

TABLES
Table 1. Groundwater Gauging Data
Table 2. Groundwater Analytical Data

FIGURES
Figure 1. Site Location Map
Figure 2. Site Map
Figure 3. Potentiometric Surface Map - October 11, 2017
Figure 4. Groundwater Analytical Map
Figure 5. Benzene Isoconcentration Map - October 11 - 12, 2017
Figure 6. 1,2-Dichloroethane Isoconcentration Map - October 11 - 12, 2017
Figure 7. Ethylene dibromide Isoconcentration Map - October 11 - 12, 2017

APPENDICES
A – Groundwater Laboratory Analytical Report and Chain of Custody Record – October 24, 2017
Annual Corrective Action Plan Monitoring Report – 2017
1

EXECUTIVE SUMMARY
During this monitoring period (2017), on behalf of ExxonMobil Environmental Services
Company (EMES), Arcadis G&M of North Carolina (Arcadis) completed an annual liquid
level monitoring and sampling event at the former ExxonMobil facility #45552 located at
1920 Chimney Rock Road in Hendersonville, Henderson County, North Carolina (the
Site). The objective of the groundwater monitoring and sampling program is to confirm
stable or decreasing concentrations of dissolved-phase chemicals of concern (COCs)
and to maintain compliance with the North Carolina Department of Environmental Quality
(NCDEQ) Underground Storage Tank (UST) Program requirements for the Site.
On October 11, 2017, (8) existing groundwater monitoring wells, MW-1, MW-3R, MW-4,
MW-5, MW-6, MW-10, MW-11, and DW-1, and the two (2) chemical injection wells, MW-
9, and INJ-2, were gauged to determine depth to water (DTW) and depth to product
(DTP), if present. Access to the property where groundwater monitoring well MW-8 is
located could be not granted due to high traffic volume. Groundwater monitoring well
MW-2R was discovered to have been tampered with and was found to have been sealed
with concrete type materials. Depths to water ranged from 18.90 feet below top of well
casing (btoc) in groundwater monitoring well MW-1 to 23.37 feet btoc in groundwater
monitoring well DW-1. Groundwater flow was observed to be toward the southwest,
which is consistent with the historically observed groundwater flow direction. Free
product was not detected in any of the groundwater monitoring wells or chemical injection
wells during the October 11, 2017 groundwater gauging event.
On October 11 – 12, 2017, two (2) groundwater monitoring wells, MW-10 and MW-11,
and two (2) chemical injection wells, MW-9 and INJ-2, were sampled. The maximum
concentrations of dissolved-phase COCs found during the October 11 – 12, 2017
groundwater sampling event are summarized in the table below:

Annual Corrective Action Plan Monitoring Report – 2017
2

Maximum Groundwater Concentrations (October 11 – 12, 2017)
Contaminant Monitoring/Injection
Well ID
Concentration
(µg/L)
North Carolina Gross
Contamination
Levels (GCLs) (µg/L)
Benzene MW-10 23,000 5,000
Toluene MW-10 38,800 260,000
Ethylbenzene MW-10 2,900 84,500
Xylenes (total) MW-10 & INJ-2 15,000 85,500
MTBE All Non-Detect 20,000
IPE MW-11 2,200 70,000
1,2-Dichloroethane MW-11 600 400
EDB INJ-2 910 50
Note:
Concentrations in bold exceed the applicable GCLs
µg/L = micrograms per liter
Groundwater analytical data collected on October 11 – 12, 2017 indicate that dissolved-
phase concentrations of benzene, 1,2-dichloroethane, and ethylene dibromide (EDB)
exceed the applicable North Carolina Gross Contamination Level (GCLs) Standards at
the Site. Dissolved-phase concentrations of COCs detected at the Site in October 2017
increased in comparison to historical groundwater analytical data.
The increasing trend observed at groundwater monitoring well MW-10 and chemical
injection well INJ-2 as well as elevated dissolved-phase COC detections at groundwater
monitoring well MW-10 and chemical injection well MW-9 indicate a potential new release
may be occurring from the active UST system at the Site. These monitoring and
chemical injection wells are located in close proximity to and are immediately
downgradient with respect to groundwater flow direction of the active fuel dispensers.
Additionally, an air sparge / soil vapor extraction (AS/SVE) system operated at the Site
for several years and several additional vacuum extraction events and two chemical
injection events have been completed at the Site. Based on the historical remediation
activities and divestment of the property by Exxon in 1992, concentrations of dissolved-
phase COCs should be exhibiting a decreasing trend. Arcadis recommends that a line
tightness test should be completed by the UST owner/operator, Henderson Oil Company
Inc., to determine if a new release has occurred.
The next annual groundwater monitoring and sampling event at the Site is scheduled for
September 2018. All groundwater monitoring wells and chemical injection wells
associated with the Site will be gauged to determine the potentiometric surface and to
check for the presence of free product. Groundwater monitoring wells MW-4, MW-10 and
MW-11 and chemical injection wells MW-9 and INJ-2 will be sampled and analyzed for
Annual Corrective Action Plan Monitoring Report – 2017
3

Volatile Organic Compounds (VOCs) by Standard Method (SM) 6200B. An annual
Corrective Action Plan (CAP) monitoring report detailing the proposed groundwater
monitoring and sampling event will be submitted to NCDEQ for review and approval
within 45 days of receipt of the laboratory report.

Annual Corrective Action Plan Monitoring Report – 2017
4

1.0 SITE HISTORY AND CHARACTERIZATION
Former ExxonMobil (Exxon) Facility #45552 is located at 1920 Chimney Rock Road,
Hendersonville, Henderson County, North Carolina and currently operates as a retail gas
station owned and operated by Henderson Oil Company, Inc. A soil investigation was
conducted in 1992 by Delta Environmental Consultants as part of the property divestment
which identified adsorbed-phase and dissolved-phase petroleum impacts to soil and
groundwater on the Site. A 12,000-gallon, 10,000-gallon and 8,000-gallon fiberglass
underground storage tank (UST) containing regular unleaded gasoline and a 1,000-gallon
fiberglass UST containing used oil were installed at the Site in 1985. It is unknown
whether these USTs were removed or are still operational at this time.
Soil vapor extraction/air sparging (SVE/AS) remediation was initiated at the Site in
January 1995 by ERM-Southeast. The remediation system was not operated during the
period of July 1996 through June 1998 as a result of the passage of Senate Bill 1317,
which temporarily suspended remediation requirements for low priority sites. The system
was re-started in June 1998 and was operated by ERM-Southeast until August of 2003
when it was permanently shutdown in response to the passage of House Bill 897. This
bill removed the requirement for environmental remediation at sites classified as
intermediate risk by the North Carolina Department of Environmental Quality (NCDEQ),
where free product is absent or less than 1/4-inch in thickness. The SVE/AS system and
associated components were removed from the Site in August 2003.
Free product was observed in monitoring well MW-9 at a thickness of 0.25 feet during a
gauging event completed on May 20, 2009. Free product has not been observed at the
Site since the May 2009 measurement.
The Site is currently owned by the Henderson Oil Company Inc. and is operating as an
Exxon branded retail and gasoline service station. The land use surrounding the Site is
mixed residential and commercial. Drinking water in the area is supplied by the City of
Hendersonville. Sensitive Receptor Surveys (SRSs) have not identified private or public
water wells within 1,500 feet of the property. No surface water bodies have been
identified within 500 feet of the Site.
The Site is located within the Chauga geologic belt of North Carolina which is composed
of low to medium grade metasedimentary and metavolcanic rocks and the Henderson
Gneiss. The overlying soil consists of reddish brown to tan, silty sandy clay with a
measured thickness of approximately 15 feet to 37 feet at the Site. Depth to groundwater
at the Site, on average, ranges from 14 to 32 feet below ground surface (bgs).

Annual Corrective Action Plan Monitoring Report – 2017
5

The NCDEQ Risk Classification for the Site is “Intermediate” due to dissolved-phase
concentrations of chemicals of concern (COC) exceeding the North Carolina Gross
Contaminant Levels (GCLs). Therefore, COC concentrations in groundwater are
compared to the North Carolina GCL standards. A site location map is presented as
Figure 1 and a site map is shown as Figure 2.

Annual Corrective Action Plan Monitoring Report – 2017
6

2.0 FREE PRODUCT RECOVERY
Groundwater gauging activities performed on October 11, 2017 indicated that free
product was not present in any of the groundwater monitoring wells or chemical injection
wells. Prior to the October 11, 2017 groundwater gauging event, free product was
observed in groundwater monitoring well MW-9 during the May 2009 gauging event with
an approximate thickness of 0.25 feet. Free product has not been detected at the Site
since the May 2009 gauging event. Current and historical groundwater elevations along
with free product thicknesses are summarized in Table 1.

Annual Corrective Action Plan Monitoring Report – 2017
7

3.0 GROUNDWATER MONITORING
3.1 Groundwater Gauging
On October 11, 2017, Arcadis personnel gauged groundwater monitoring wells MW-1,
MW-3R, MW-4, MW-5, MW-6, MW-10, MW-11, and DW-1, and chemical injection wells
MW-9, and INJ-2. Access to the property where groundwater monitoring well MW-8 is
located could be not granted due to high traffic volume. Groundwater monitoring well
MW-2R was discovered to have been tampered with and was found to have been sealed
with concrete type materials. Free product was not detected in any of the gauged
groundwater monitoring wells or chemical injection wells.
Groundwater gauging was conducted with an oil/water interface probe (IP) prior to
purging and sampling to determine depth to water (DTW) and depth to product (DTP), if
present. The IP and attached tape, marked in 0.01-foot increments, was properly
decontaminated before each use with Alconox soap and rinsed with distilled water. The
DTW was measured from the marked survey point on the top of well casing (TOC). All
measurements were recorded to the nearest 0.01-foot increment.
Depths to water on October 11, 2017 ranged from 18.90 feet below top of well casing
(btoc) in groundwater monitoring well MW-1 to 23.37 feet btoc in groundwater monitoring
well DW-1. Groundwater flow was observed to be toward the southwest, which is
consistent with historic observed groundwater flow direction.
Current and historical groundwater elevations are summarized in Table 1. A
potentiometric surface map for the October 11, 2017 groundwater gauging event is
presented as Figure 3.
3.2 Groundwater Sampling
On October 11 – 12, 2017, groundwater monitoring wells MW-10 and MW-11 and
chemical injection wells MW-9 and INJ-2 were purged of the stagnant water. Prior to
purging, the amount of water to be removed was calculated using the following formula:
3.1415 x r2 x (TD – DTW) x 7.481 = gallons of water (1 well volume)
Where: r = radius of well (in feet)
TD = total depth of well (in feet)
DTW = depth to water (in feet)
In order to ensure that the water in the monitoring wells and chemical injection wells after
purging was representative of the water in the aquifer, a minimum of three well volumes
were removed. Monitoring wells and chemical injection wells that did not generate three
well volumes of water were purged dry and given sufficient time to allow for recharging.
All sampling tasks were completed within 24 hours of purging.
Groundwater samples obtained from the groundwater monitoring wells and chemical
injection wells were collected from disposable polyethylene bailers using new nylon rope.
Annual Corrective Action Plan Monitoring Report – 2017
8

All groundwater samples collected from the groundwater monitoring wells and chemical
injection wells were placed in laboratory supplied containers and were shipped on wet ice
to Eurofins Lancaster Laboratories Environmental in Lancaster, Pennsylvania, for
analysis of volatile organic compounds (VOCs) by Standard Method (SM) 6200B.
Groundwater samples submitted for VOC analysis were collected in triplicate 40-milliliter
(mL) volatile organic analysis (VOA) glass vials with Teflon-lined septa screw caps
preserved with hydrochloric acid (HCl).
3.3 Groundwater Analytical Results
Analytical data from the October 11 – 12, 2017 groundwater sampling event indicated the
following:
• Dissolved-phase concentrations of benzene were detected at groundwater
monitoring wells MW-10 (23,000 µg/L) and MW-11 (19,000 µg/L) and chemical
injections wells MW-9 (11,000 µg/L) and INJ-2 (17,000 µg/L) exceeding the
applicable North Carolina GCL Standard for benzene (5,000 µg/L).
• Dissolved-phase concentrations of 1,2-dichloroethane were detected at
groundwater monitoring wells MW-11 (600 µg/L) and chemical injection well INJ-
2 (510 µg/L) exceeding the applicable North Carolina GCL Standard for 1,2-
dichloroethane (400 µg/L).
• Dissolved-phase concentrations of ethylene dibromide were detected at
groundwater monitoring wells MW-10 (850 µg/L) and MW-11 (810 µg/L) and
chemical injection wells MW-9 (550 µg/L) and INJ-2 (910 µg/L) exceeding the
applicable North Carolina GCL Standard for ethylene dibromide (50 µg/L).
No other dissolved-phase COCs were detected in concentrations that exceeded their
respective North Carolina GCLs during the October 11 – 12, 2017 groundwater sampling
event.
The maximum dissolved-phase concentrations for selected COCs and the associated
groundwater monitoring wells and chemical injection wells in which they were detected
on October 12, 2017 are listed below in the following table:

Annual Corrective Action Plan Monitoring Report – 2017
9

Maximum Groundwater Concentrations (October 11 – 12, 2017)
Contaminant Monitoring/Injection
Well ID
Concentration
(µg/L)
North Carolina Gross
Contamination
Levels (GCLs) (µg/L)
Benzene MW-10 23,000 5,000
Toluene MW-10 38,800 260,000
Ethylbenzene MW-10 2,900 84,500
Xylenes (total) MW-10 & INJ-2 15,000 85,500
MTBE All Non-Detect 20,000
IPE MW-11 2,200 70,000
1,2-Dichloroethane MW-11 600 400
EDB INJ-2 910 50
Note:
Concentrations in bold exceed the applicable GCLs
µg/L = micrograms per liter
Current and historical groundwater analytical data is presented in Table 2. A dissolved-
phase concentration map is provided as Figure 4. Isoconcentration maps representing
the dissolved-phase extent of benzene, 1,2-dichloroethane, and EDB present at the Site
during the October 11 – 12, 2017 groundwater sampling event are depicted as Figures 5
though Figure 7. Laboratory analytical data from the October 11 – 12, 2017 groundwater
sampling event is presented as Appendix A.

Annual Corrective Action Plan Monitoring Report – 2017
10

4.0 SITE REMEDIATION
Summarized in the table below is a chronology of remediation activities performed at the
Site to date:
Remediation Activities to Date
Date Activity
1995 - 1996 AS/SVE system continuously operated.
1998 - 2003 AS/SVE system continuously operated.
November 2003
MMPE event – 47 pounds (lbs) of total petroleum
hydrocarbons (TPH) and 28,543 gallons
of water recovered.
April 28, 2010 AFVR event – 4.2 lbs of TPH and 2,125
gallons of water recovered.
June 17, 2010 AFVR event – 3.76 lbs of TPH and 1,642
gallons of water recovered.
August 11, 2010 AFVR event – 4.80 lbs of TPH and 2,005
gallons of water recovered.
October 6, 2010 AFVR event – 4.93 lbs of TPH and 1,582
gallons of water recovered.
May 26, 2011 AFVR event – 3.98 lbs of TPH and 1,402
gallons of water recovered.
May 2011 – December 2012 Monitored Natural Attenuation
December 10 – 12, 2012
Sodium Persulfate Injection – Approximately
2,497-gallons of sodium persulfate and ferrous
iron activator solution injected into MW-2R, MW-9,
and INJ-2.
July 23 – 25, 2013 &
July 29,2013
Sodium Persulfate Injection – Approximately
6,587-gallons of sodium persulfate and ferrous
sulfate heptahydrate/citric acid activator solution
injected into MW-2R, MW-9, and INJ-2
August 2013 – Present Monitored Natural Attenuation

Annual Corrective Action Plan Monitoring Report – 2017
11

5.0 CONCLUSIONS AND RECOMMENDATIONS
Free product was not detected in any of the groundwater monitoring wells or chemical
injection wells gauged during the October 11, 2017 groundwater monitoring events.
Groundwater analytical data from the October 11 – 12, 2017 groundwater sampling event
indicates that dissolved-phase concentrations of benzene, 1,2-dichloroethane, and
ethylene dibromide exceed the applicable North Carolina Gross Contamination Level
(GCLs) Standards for groundwater at the Site. Dissolved-phase concentrations of COCs
at the Site in October 2017 increased in comparison to historical groundwater analytical
data.
The increasing trend observed at groundwater monitoring well MW-10 and chemical
injection well INJ-2 as well as elevated dissolved-phase COC detections at groundwater
monitoring well MW-10 and chemical injection well MW-9 indicate a potential new release
may be occurring from the active UST system at the Site. These monitoring and
chemical injection wells are located in close proximity to and are immediately
downgradient with respect to groundwater flow direction of the active fuel dispensers.
Additionally, an air sparge / soil vapor extraction (AS/SVE) system operated at the Site
for several years and several additional vacuum extraction events and two chemical
injection events have been completed at the Site. Based on the historical remediation
activities and divestment of the property by Exxon in 1992, concentrations of dissolved-
phase COCs should be exhibiting a decreasing trend. Arcadis recommends that a line
tightness test should be completed by the UST owner/operator, Henderson Oil Company
Inc., to determine if a new release has occurred.
The next groundwater monitoring and sampling event at the Site is scheduled for
September 2018. All groundwater monitoring wells and chemical injection wells
associated with the Site will be gauged to determine the potentiometric surface and to
check for the presence of free product. Groundwater monitoring wells MW-4, MW-10 and
MW-11 and chemical injection wells MW-9 and INJ-2 will be sampled and analyzed for
VOCs by SM 6200B. An annual Corrective Action Plan (CAP) monitoring report detailing
the proposed groundwater monitoring and sampling event will be submitted to NCDEQ
for review and approval within 45 days of receipt of the laboratory report.

TABLES

Table 1: Groundwater Gauging Data
Revision Date: 12/13/2017 Incident Number: 9644 Facility ID #: Former ExxonMobil Facility #45552
Monitoring Well
ID
Date
Installed
Date Water
Level
Measured
Total Casing
Depth
(ft bgs)
Screened
Interval
(ft bgs)
Top of Casing
Elevation
(ft aasl)
Depth to
Water
(ft btoc)
Depth to
Product
(ft btoc)
Product
Thickness
(ft)
Ground
Water
Elevation1
(ft aasl)
Well
Diameter
05/20/93 14.46 ----83.04 2"
09/28/93 16.55 ----80.95 2"
01/31/94 17.98 ----79.52 2"
05/23/94 17.24 ----80.26 2"
08/22/94 17.10 ----80.40 2"
12/05/94 16.47 ----81.03 2"
03/06/95 15.65 ----81.85 2"
06/07/95 16.26 ----81.24 2"
09/13/95 16.74 ----80.76 2"
12/14/95 17.47 ----80.03 2"
03/06/96 16.98 ----80.52 2"
06/11/96 17.11 ----80.39 2"
11/07/97 19.16 ----78.34 2"
10/29/98 18.79 ----78.71 2"
01/05/99 19.77 ----77.73 2"
05/24/99 19.69 ----77.81 2"
12/15/99 20.83 ----76.67 2"
06/20/00 20.54 ----76.96 2"
12/27/00 22.71 ----74.79 2"
06/18/01 22.21 ----75.29 2"
12/19/01 22.98 ----74.52 2"
06/27/02 22.73 ----74.77 2"
11/11/02 23.40 ----74.10 2"
06/30/03 19.83 ----77.67 2"
06/20/07 19.29 ----78.21 2"
08/19/08 22.35 ----75.15 2"
05/20/09 22.58 ----74.92 2"
03/17/10 17.58 ----79.92 2"
10/20/10 18.72 ----78.78 2"
03/30/11 18.89 ----78.61 2"
10/07/11 19.81 ----77.69 2"
03/06/12 20.35 ----77.15 2"
10/29/12 19.91 ----77.59 2"
01/16/13 20.01 ----77.49 2"
02/13/13 19.60 ----77.90 2"
08/19/13 15.34 ----82.16 2"
09/17/13 16.31 ----81.19 2"
03/26/14 16.60 ----80.90 2"
09/16/14 16.85 ----80.65 2"
03/09/15 18.43 ----79.07 2"
09/08/15 19.90 ----77.60 2"
08/30/16 16.90 ----80.60 2"10/11/17 18.90 ----78.60 2"
05/20/93 19.05 ----78.70 2"
09/28/93 20.22 ----77.53 2"
01/31/94 21.72 ----76.03 2"
05/23/94 20.87 ----76.88 2"
08/22/94 20.55 ----77.20 2"
12/05/94 20.50 ----77.25 2"
03/06/95 19.92 ----77.83 2"
06/07/95 20.19 ----77.56 2"
09/13/95 21.45 ----76.30 2"
12/14/95 20.88 ----76.87 2"
03/06/96 20.31 ----77.44 2"
06/11/96 20.49 ----77.26 2"
11/07/97 22.53 ----75.22 2"
10/29/98 21.78 ----75.97 2"
01/05/99 23.14 ----74.61 2"
05/24/99 22.71 ----75.04 2"
12/15/99 23.48 ----74.27 2"
06/20/00 23.78 ----73.97 2"
12/27/00 25.21 ----72.54 2"
06/18/01 25.11 ----72.64 2"
12/19/01 23.64 ----74.11 2"
06/27/02 25.53 ----72.22 2"
11/11/02 26.21 ----71.54 2"
06/30/03 23.00 ----74.75 2"
06/10/05 21.06 ----76.69 2"
09/20/05 20.33 ----77.42 2"
97.75
MW-2 converted to MW-2R on 11/11/2002
MW-2 6/18/1992 27.00 17'-27'
MW-1 6/18/1992 25.00 15'-20'97.50
Page 1 of 6
Table 1: Groundwater Gauging Data
Revision Date: 12/13/2017 Incident Number: 9644 Facility ID #: Former ExxonMobil Facility #45552
Monitoring Well
ID
Date
Installed
Date Water
Level
Measured
Total Casing
Depth
(ft bgs)
Screened
Interval
(ft bgs)
Top of Casing
Elevation
(ft aasl)
Depth to
Water
(ft btoc)
Depth to
Product
(ft btoc)
Product
Thickness
(ft)
Ground
Water
Elevation1
(ft aasl)
Well
Diameter
MW-1 6/18/1992 25.00 15'-20'97.50
11/10/06 22.39 ----75.29 2"
06/20/07 22.24 ----75.44 2"
08/19/08 24.91 ----72.77 2"
05/20/09 25.42 ----72.26 2"
03/17/10 21.17 ----76.51 2"
04/28/10 20.87 ----76.81 2"
06/17/10 20.71 ----76.97 2"
08/11/10 21.05 ----76.63 2"
10/06/10 21.94 ----75.74 2"
10/20/10 21.72 ----75.96 2"
03/30/11 22.25 ----75.43 2"
10/07/11 22.98 ----74.70 2"
03/06/12 23.26 ----74.42 2"
10/29/12 22.65 ----75.03 2"
12/10/12 23.00 ----74.68 2"
01/16/13 23.35 ----74.33 2"
02/13/13 22.85 ----74.83 2"
08/19/13 19.80 ----77.88 2"
09/17/13 19.83 ----77.85 2"
03/26/14 20.15 ----77.53 2"
09/16/14 20.65 ----77.03 2"
03/09/15 21.82 ----75.86 2"
09/08/15 22.51 ----75.17 2"
08/30/16 20.35 ----77.33 2"
05/20/93 19.61 ----79.35 2"
09/28/93 20.94 ----78.02 2"
01/31/94 22.39 ----76.57 2"
05/23/94 21.55 ----77.41 2"
08/22/94 21.16 ----77.80 2"
12/05/94 21.09 ----77.87 2"
03/06/95 20.40 ----78.56 2"
06/07/95 21.74 ----77.22 2"
09/13/95 21.06 ----77.90 2"
12/14/95 21.61 ----77.35 2"
03/06/96 21.10 ----77.86 2"
06/11/96 21.45 ----77.51 2"
11/07/97 23.22 ----75.74 2"
10/29/98 21.36 ----77.60 2"
01/05/99 22.96 ----76.00 2"
05/24/99 23.33 ----75.63 2"
06/20/00 24.51 ----74.45 2"
12/27/00 25.82 ----73.14 2"
06/18/01 25.69 ----73.27 2"
12/19/01 26.13 ----72.83 2"
06/27/02 25.95 ----73.01 2"
11/11/02 26.67 ----72.29 2"
06/30/03 23.32 ----75.64 2"
06/10/05 21.18 ----77.78 2"
09/20/05 20.43 ----78.53 2"
11/10/06 22.55 ----76.41 2"
06/20/07 22.56 ----76.40 2"
08/19/08 25.13 ----73.83 2"
05/20/09 25.63 ----73.33 2"
03/17/10 21.35 ----77.61 2"
10/20/10 21.92 ----77.04 2"
03/30/11 22.48 ----76.48 2"
10/07/11 23.15 ----75.81 2"
03/06/12 23.50 ----75.46 2"
10/29/12 22.89 ----76.07 2"
01/16/13 23.50 ----75.46 2"
02/13/13 22.93 ----76.03 2"
08/19/13 19.78 ----79.18 2"
09/17/13 19.91 ----79.05 2"
03/26/14 20.10 ----78.86 2"
09/16/14 20.80 ----78.16 2"
03/09/15 22.12 ----76.84 2"
09/08/15 22.95 ----76.01 2"
08/30/16 20.62 ----78.34 2"
10/11/17 22.26 ----76.70 2"
MW-3 converted to MW-3R on 11/11/2002
20'-40'
MW-3
40.00
6/18/1992
Monitoring well converted to injection well and utilized for persulfate injection in December 2012 & July 2013
17'-27'
97.68
40.00 20'-40'98.96
98.96
MW-2R 11/11/2002
27.00
MW-3R 11/11/2002
Monitoring Well MW-2R Destroyed
40.00 20'-40'97.68
Page 2 of 6
Table 1: Groundwater Gauging Data
Revision Date: 12/13/2017 Incident Number: 9644 Facility ID #: Former ExxonMobil Facility #45552
Monitoring Well
ID
Date
Installed
Date Water
Level
Measured
Total Casing
Depth
(ft bgs)
Screened
Interval
(ft bgs)
Top of Casing
Elevation
(ft aasl)
Depth to
Water
(ft btoc)
Depth to
Product
(ft btoc)
Product
Thickness
(ft)
Ground
Water
Elevation1
(ft aasl)
Well
Diameter
MW-1 6/18/1992 25.00 15'-20'97.50
05/20/93 17.88 ----80.86 2"
09/28/93 21.49 ----77.25 2"
01/31/94 22.84 ----75.90 2"
05/23/94 22.06 ----76.68 2"
08/22/94 21.83 ----76.91 2"
12/05/94 21.74 ----77.00 2"
03/06/95 21.23 ----77.51 2"
06/07/95 21.52 ----77.22 2"
09/13/95 21.75 ----76.99 2"
12/14/95 22.26 ----76.48 2"
03/06/96 21.69 ----77.05 2"
06/11/96 21.85 ----76.89 2"
11/07/97 23.60 ----75.14 2"
10/29/98 23.06 ----75.68 2"
01/05/99 23.78 ----74.96 2"
05/24/99 23.71 ----75.03 2"
12/15/99 23.64 ----75.10 2"
12/27/00 23.69 ----75.05 2"
06/18/01 23.92 ----74.82 2"
12/19/01 23.47 ----75.27 2"
11/10/06 23.60 ----75.14 2"
08/19/08 23.00 ----75.74 2"
05/20/09 24.06 ----74.68 2"
10/20/10 22.93 ----75.81 2"
03/30/11 23.16 ----75.58 2"
10/07/11 23.78 ----74.96 2"
03/06/12 DRY ----Dry 2"
10/29/12 22.59 ----76.15 2"
01/16/13
02/13/13 6.65 ----92.09 2"
08/19/13 20.73 ----78.01 2"
09/17/13 20.93 ----77.81 2"
03/26/14 20.98 ----77.76 2"
09/16/14 21.81 ----76.93 2"
03/09/15 22.52 ----76.22 2"
09/08/15 Dry ----NA 2"
08/30/16 21.70 ----77.04 2"
10/11/17 Dry ----NA 2"
05/20/93 16.00 ----81.76 2"
09/28/93 17.79 ----79.97 2"
01/31/94 19.36 ----78.40 2"
05/23/94 18.56 ----79.20 2"
08/22/94 17.81 ----79.95 2"
12/05/94 17.95 ----79.81 2"
03/06/95 18.48 ----79.28 2"
06/07/95 17.61 ----80.15 2"
09/13/95 18.00 ----79.76 2"
12/14/95 18.95 ----78.81 2"
03/06/96 18.23 ----79.53 2"
06/11/96 18.35 ----79.41 2"
11/07/97 22.20 ----75.56 2"
10/29/98 19.97 ----77.79 2"
01/05/99 20.90 ----76.86 2"
05/24/99 20.86 ----76.90 2"
12/15/99 21.15 ----76.61 2"
06/20/00 22.23 ----75.53 2"
12/27/00 23.73 ----74.03 2"
06/18/01 23.62 ----74.14 2"
12/19/01 24.61 ----73.15 2"
06/27/02 24.51 ----73.25 2"
06/30/03 21.00 ----76.76 2"
06/10/05 18.85 ----78.91 2"
11/10/06 20.37 ----77.39 2"
06/20/07 24.36 ----73.40 2"
08/19/08 23.36 ----74.40 2"
05/20/09 23.76 ----74.00 2"
03/17/10 18.84 ----78.92 2"
10/20/10 19.86 ----77.90 2"
03/30/11 20.12 ----77.64 2"
10/07/11 21.14 ----76.62 2"
03/06/12 21.53 ----76.23 2"
10/29/12 20.94 ----76.82 2"
01/16/13 21.45 ----76.31 2"
02/13/13 20.75 ----77.01 2"
08/19/13 17.14 ----80.62 2"
09/17/13 17.61 ----80.15 2"03/26/14 17.66 ----80.10 2"
MW-4 6/30/1992 25.00
Inaccessible
97.7610'-25'
10'-25'98.74
25.006/30/1992MW-5
Page 3 of 6
Table 1: Groundwater Gauging Data
Revision Date: 12/13/2017 Incident Number: 9644 Facility ID #: Former ExxonMobil Facility #45552
Monitoring Well
ID
Date
Installed
Date Water
Level
Measured
Total Casing
Depth
(ft bgs)
Screened
Interval
(ft bgs)
Top of Casing
Elevation
(ft aasl)
Depth to
Water
(ft btoc)
Depth to
Product
(ft btoc)
Product
Thickness
(ft)
Ground
Water
Elevation1
(ft aasl)
Well
Diameter
MW-1 6/18/1992 25.00 15'-20'97.50
09/16/14 18.40 ----79.36 2"
03/09/15 19.81 ----77.95 2"
09/08/15 20.91 ----76.85 2"
08/30/16 18.23 ----79.53 2"10/11/17 20.14 ----77.62 2"
05/20/93 16.81 ----81.72 2"
09/28/93 18.48 ----80.05 2"
01/31/94 20.06 ----78.47 2"
05/23/94 19.20 ----79.33 2"
08/22/94 18.44 ----80.09 2"
12/05/94 18.47 ----80.06 2"
03/06/95 17.88 ----80.65 2"
06/07/95 18.00 ----80.53 2"
09/13/95 18.60 ----79.93 2"
12/14/95 19.47 ----79.06 2"
03/06/96 19.30 ----79.23 2"
06/11/96 19.11 ----79.42 2"
11/07/97 21.03 ----77.50 2"
10/29/98 20.65 ----77.88 2"
01/05/99 21.72 ----76.81 2"
05/24/99 21.63 ----76.90 2"
12/15/99 23.00 ----75.53 2"
06/20/00 22.86 ----75.67 2"
12/27/00 24.41 ----74.12 2"
06/18/01 24.46 ----74.07 2"
12/19/01 24.56 ----73.97 2"
06/27/02 24.52 ----74.01 2"
11/11/02 24.57 ----73.96 2"
11/10/06 20.91 ----77.62 2"
06/20/07 20.95 ----77.58 2"
08/19/08 32.81 ----65.72 2"
05/20/09 24.13 ----74.40 2"
03/17/10 19.95 ----78.58 2"
10/07/11 21.58 ----76.95 2"
03/06/12 22.00 ----76.53 2"
10/29/12 21.43 ----77.10 2"
01/16/13 22.08 ----76.45 2"
02/13/13 21.35 ----77.18 2"
08/19/13 17.73 ----80.80 2"
09/17/13 18.03 ----80.50 2"
03/26/14 17.97 ----80.56 2"
09/16/14 18.95 ----79.58 2"
03/09/15 20.46 ----78.07 2"
09/08/15 21.51 ----77.02 2"
08/30/16 18.67 ----79.86 2"10/11/17 20.66 ----77.87 2"
05/20/93 9.14 ----85.80 2"
09/28/93 11.77 ----83.17 2"
03/06/12
10/29/12
01/16/13
02/13/13
08/19/13
09/17/13
03/26/14
09/16/14
03/09/15
09/08/1508/30/16
05/20/93 12.03 ----86.13 2"
09/28/93 22.13 ----76.03 2"
01/31/94 23.79 ----74.37 2"
05/23/94 22.85 ----75.31 2"
08/22/94 22.70 ----75.46 2"
12/05/94 22.61 ----75.55 2"
03/06/95 22.26 ----75.90 2"
06/07/95 22.41 ----75.75 2"
09/13/95 22.57 ----75.59 2"
12/14/95 23.17 ----74.99 2"
03/06/96 22.76 ----75.40 2"
06/11/96 22.92 ----75.24 2"
11/07/97 24.42 ----73.74 2"
10/29/98 24.02 ----74.14 2"
05/24/99 24.84 ----73.32 2"
12/15/99 26.13 ----72.03 2"
06/20/00 26.09 ----72.07 2"06/30/03 25.24 ----72.92 2"
MW-7 5/20/1993 25.00 10'-25'94.94
Unable to Locate
Unable to Locate
Unable to Locate
Unable to Locate
MW-6 6/30/1992 25.00 98.53
Unable to Locate
Unable to Locate
Unable to Locate
98.1612'-27'27.00
Unable to Locate
Unable to Locate
10'-25'
5/20/1993MW-8
MW-5
Continued 6/30/1992 25.00 10'-25'97.76
Unable to LocateDestroyed - Date Unknown
Page 4 of 6
Table 1: Groundwater Gauging Data
Revision Date: 12/13/2017 Incident Number: 9644 Facility ID #: Former ExxonMobil Facility #45552
Monitoring Well
ID
Date
Installed
Date Water
Level
Measured
Total Casing
Depth
(ft bgs)
Screened
Interval
(ft bgs)
Top of Casing
Elevation
(ft aasl)
Depth to
Water
(ft btoc)
Depth to
Product
(ft btoc)
Product
Thickness
(ft)
Ground
Water
Elevation1
(ft aasl)
Well
Diameter
MW-1 6/18/1992 25.00 15'-20'97.50
10/07/11 25.15 ----73.01 2"
03/06/12
10/29/12
01/16/13 25.42 ----72.74 2"
02/13/13 25.07 ----73.09 2"
08/19/13 22.18 ----75.98 2"
03/26/14
09/16/14
03/09/15
09/08/15
08/30/1610/11/17
06/10/05 21.19 ----76.99 4"
09/20/05 20.44 ----77.74 4"
11/10/06 22.51 ----75.67 4"
06/20/07 22.53 ----75.65 4"
08/19/08 25.11 ----73.07 4"
05/20/09 25.80 25.55 0.25 72.57 4"
03/17/10 21.30 ----76.88 4"
04/28/10 20.97 ----77.21 4"
06/17/10 20.82 ----77.36 4"
08/11/10 21.12 ----77.06 4"
10/06/10 21.62 ----76.56 4"
10/20/10 21.93 ----76.25 4"
03/30/11 22.41 ----75.77 4"
10/07/11 23.10 ----75.08 4"
03/06/12 23.45 ----74.73 4"
10/29/12 22.33 ----75.85 4"
12/10/12 23.43 ----74.75 4"
01/16/13 23.60 ----74.58 4"
02/13/13 22.98 ----75.20 4"
08/19/13 20.00 ----78.18 4"
09/17/13 19.94 ----78.24 4"
03/26/14 20.15 ----78.03 4"
09/16/14 20.75 ----77.43 4"
03/09/15 22.13 ----76.05 4"
09/08/15 22.86 ----75.32 4"
08/30/16 20.61 ----77.57 4"
10/11/17 22.28 ----75.90 4"
12/10/12 23.35 ----NS 2"
01/16/13 23.50 ----NS 2"
02/13/13 22.90 ----NS 2"
08/19/13 19.78 ----NS 2"
09/17/13 19.82 ----NS 2"
03/26/14 20.00 ----NS 2"
09/16/14 20.68 ----NS 2"
03/09/15 22.06 ----NS 2"
09/08/15 22.78 ----NS 2"
08/30/16 20.54 ----NS 2"10/11/17 22.27 ----NS 2"
12/10/12 23.16 ----NS 2"
01/16/13 22.60 ----NS 2"
02/13/13 23.22 ----NS 2"
08/19/13 19.69 ----NS 2"
09/17/13 19.62 ----NS 2"
03/26/14 19.98 ----NS 2"
09/16/14 20.48 ----NS 2"
03/09/15 22.00 ----NS 2"
09/08/15 22.70 ----NS 2"
08/30/16 20.57 ----NS 2"10/11/17 21.91 ----NS 2"
05/20/93 20.74 ----77.33 2"
09/28/93 22.42 ----75.65 2"
01/31/94 23.15 ----74.92 2"
05/23/94 22.82 ----75.25 2"
08/22/94 22.56 ----75.51 2"
12/05/94 22.13 ----75.94 2"
03/06/95 21.78 ----76.29 2"
06/07/95 21.63 ----76.44 2"
09/13/95 21.94 ----76.13 2"
12/14/95 22.53 ----75.54 2"
03/06/96 22.48 ----75.59 2"
06/11/96 22.25 ----75.82 2"11/07/97 23.83 ----74.24 2"
DW-1 8/6/1992 37.00 32'-37'98.07
15'-40'98.18
Inaccessible
27.00 12'-27'98.16 Unable to Locate
40.00
MW-10 6/28/2012 30.00 20'-30'NS
MW-8
Continued
Injection Well INJ-1 converted to Monitoring Well MW-10 in December 2012
Inaccessible
Inaccessible
Inaccessible
MW-9 6/10/2005
98.1815'-40'40
Inaccessible
Inaccessible
Inaccessible
6/28/2012 30.00 20'-30'NS
5/20/1993
Monitoring well converted to injection well and utilized for persulfate injection in December 2012 & July 2013
Injection Well INJ-3 converted to Monitoring Well MW-11 in December 2012
MW-11
Page 5 of 6
Table 1: Groundwater Gauging Data
Revision Date: 12/13/2017 Incident Number: 9644 Facility ID #: Former ExxonMobil Facility #45552
Monitoring Well
ID
Date
Installed
Date Water
Level
Measured
Total Casing
Depth
(ft bgs)
Screened
Interval
(ft bgs)
Top of Casing
Elevation
(ft aasl)
Depth to
Water
(ft btoc)
Depth to
Product
(ft btoc)
Product
Thickness
(ft)
Ground
Water
Elevation1
(ft aasl)
Well
Diameter
MW-1 6/18/1992 25.00 15'-20'97.50
10/29/98 22.90 ----75.17 2"
05/24/99 24.33 ----73.74 2"
12/15/99 25.33 ----72.74 2"
06/20/00 25.42 ----72.65 2"
12/27/00 26.66 ----71.41 2"
06/18/01 27.10 ----70.97 2"
12/19/01 27.31 ----70.76 2"
11/11/02 27.95 ----70.12 2"
06/30/03 24.54 ----73.53 2"
11/10/06 23.84 ----74.23 2"
10/07/11 24.35 ----73.72 2"
03/06/12 24.62 ----73.45 2"
10/29/12 24.00 ----74.07 2"
01/16/13 23.70 ----74.37 2"
02/13/13 24.15 ----73.92 2"
08/19/13 20.85 ----77.22 2"
09/16/14 21.97 ----76.10 2"
03/09/15 22.93 ----75.14 2"
09/08/15 23.95 ----74.12 2"
08/30/16 22.06 ----76.01 2"10/11/17 23.37 ----74.70 2"
12/10/12 23.19 ----NS 2"
01/16/13 22.75 ----NS 2"
02/13/13 23.38 ----NS 2"
08/19/13 19.85 ----NS 2"
09/17/13 19.75 ----NS 2"
03/26/14 19.94 ----NS 2"
09/16/14 20.52 ----NS 2"
03/09/15 21.91 ----NS 2"
09/08/15 22.61 ----NS 2"
08/30/16 20.38 ----NS 2"10/11/17 22.03 ----NS 2"
Notes:
aasl = above arbitrary site level.
bgs = below ground surface.
btoc = below top of well casing.
ft = feet
NS = Not Surveyed
NA = Not Applicable1 = Groundwater elevations that contain product have been corrected: [top of casing elevation - depth to water] + [free product thickness x 0.74]
DW-1
Continued 8/6/1992 37.00 32'-37'98.07
INJ-2 6/28/2012 30.00 20'-30'NS
Page 6 of 6
Table 2: Groundwater Analytical Data
Revision Date: 12/13/2017 Incident Number: 9644 Facility ID #: Former ExxonMobil Facility #45552
6200/504.1
Well ID Date Incident Phase Total BTEX Benzene Toluene Ethylbenzene Total xylenes MTBEDiisopropyl Ether (IPE)1,2-Dichloroethane Ethanol1,3,5-Trimethylbenzene1,2,4-Trimethylbenzenen-Butylbenzenesec-ButylbenzeneIsopropylbenzenep-IsopropyltolueneNaphthalenen-PropylbenzeneStyreneEthylene Dibromide (EDB) (µg/L)GCLs NE 5,000 260,000 84,500 85,500 20,000 70,000 400 NE 25,000 28,500 6,900 8,500 25,000 NE 6,000 30,000 70,000 50
06/19/92 10,040 140 1,800 1,400 6,700 ND --------------------------
05/20/93 13,180 580 2,900 1,700 8,000 ND --------------------`----
09/28/93 3,820 130 860 730 2,100 67 110 ------------------------
08/22/94 2,575 58 267 590 1,660 24 167 ------------------------
09/13/95 1,977 7 1,100 420 450 ND ND ------------------------
12/15/99 3 1.3 1.8 ND 3.4 5.5 ND ------------------------
06/27/02 228 2.2 3.9 38.3 184 9.7 6 ------------------------
06/30/03 1,068 ND 88.7 79.5 900 1.7 ND ------------------------
03/17/10 5 5 ND<1.00 ND<1.00 ND<3.00 ND<1.00 ND<1.00 ----------------------ND<0.02000
10/20/10 8.14 8.14 ND<1.00 ND<1.00 ND<3.00 ND<1.00 ND<1.00 ----------------------ND<0.02017
03/30/11 6.53 6.53 ND<0.50 ND<0.50 ND<1.00 ND<0.50 ND<0.50 ND<0.50 ND<50 ND<0.50 0.53 ND<0.50 ND<0.50 ND<0.50 ND<0.50 ND<5.0 ND<0.50 ND<0.50 ND<0.02017
06/19/92 54,800 22,000 22,000 1,500 9,300 ND --------------------------
05/20/93 60,300 23,000 23,000 2,300 12,000 300 --------------------------
09/28/93 28,500 7,100 6,200 2,200 13,000 ND 9,100 ------------------------
01/31/94 55,000 21,000 21,000 2,000 11,000 ND 8,400 ------------------------
05/23/94 129,550 40,900 46,100 6,550 36,000 ND ND ------------------------
08/22/94 78,210 32,500 30,500 1,910 13,300 118 8,170 ------------------------
12/05/94 107,920 48,800 37,900 2,920 18,300 ----------------------------
03/06/95 95,400 39,600 35,100 3,600 17,100 ----------------------------
06/07/95 63,620 25,200 22,000 2,520 13,900 765 9,990 ------------------------
09/13/95 95,760 38,700 36,400 3,060 17,600 32 126 ------------------------
12/14/95 109,440 45,000 43,200 4,140 17,100 ND 12,600 ------------------------
03/06/96 99,850 41,400 38,700 3,150 16,600 450 12,200 ------------------------
06/11/96 103,050 42,800 40,500 3,150 16,600 ND 31,000 ------------------------
11/07/97 53,080 23,500 20,100 1,300 8,180 150 6,440 ------------------------
10/29/98 79,460 32,000 30,400 2,420 14,640 420 9,020 ------------------------
01/05/99 23,110 9,400 7,160 1,070 5,480 424 3,680 ------------------------
05/24/99 41,000 16,200 16,200 1,140 7,460 ND 5,840 ------------------------
12/15/99 46,320 19,800 18,500 1,210 6,810 340 6,080 ------------------------
06/20/00 46,060 18,100 17,900 1,250 8,810 520 5,550 ------------------------
12/27/00 16,210 6,900 4,410 250 4,650 720 3,960 ------------------------
06/18/01 37,710 15,600 13,100 1,020 7,990 1,250 6,000 ------------------------
11/30/01 36,730 14,600 12,500 1,570 8,060 1,100 4,280 ------------------------
06/27/02 49,990 19,800 18,200 1,590 10,400 1,200 5,920 ------------------------
11/11/02 29,320 10,300 13,100 960 4,960 1,520 1,960 ------------------------
06/30/03 40,620 14,100 17,400 1,380 7,740 1,180 3,600 ------------------------
11/19/03 20,025 6,390 7,470 845 5,320 845 1,010 ------------------------
01/10/05 55,350 19,800 22,800 1,950 10,800 1,350 3,650 ------------------------
06/10/05 54,880 19,400 22,100 2,080 11,300 1,100 3,290 ------------------------
09/20/05 46,100 15,500 19,200 1,690 9,710 774 2,800 ------------------------
11/10/06 44,790 17,100 16,900 1,620 9,170 348 2,760 ------------------------
06/20/07 58,480 19,400 24,600 1,880 12,600 409 3,070 ------------------------
08/19/08 62,910 26,500 24,900 2,030 9,480 403 3,920 ------------------------
05/20/09 77,160 28,500 29,200 2,340 12,800 < 1.00 4,320 ------------------------
03/17/10 61,460 22,700 25,000 1,960 11,800 464 3,740 ----------------------802.3
10/20/10 4,371 1,750 1,620 144 857 62.2 240 ----------------------62.86
03/30/11 42,940 16,200 18,500 1,340 6,900 489 1,700 964 ND<1000 403 1,030 42.2 ND<10 39.2 ND<10 462 113 ND<10 149.4
10/07/11 46,250 16,100 20,200 1,640 8,310 953 ID2 1,580 805 1,080 427 1,380 40.2 5.78 53.0 5.80 660 147 185 434.1
Monitoring
SM6200B (Historical Data Used 602/6230D/6210D/8260B) (µg/L)1
MW-1 Monitoring
MonitoringMW-2
MW-2R
1 of 5
Table 2: Groundwater Analytical Data
Revision Date: 12/13/2017 Incident Number: 9644 Facility ID #: Former ExxonMobil Facility #45552
6200/504.1
Well ID Date Incident Phase Total BTEX Benzene Toluene Ethylbenzene Total xylenes MTBEDiisopropyl Ether (IPE)1,2-Dichloroethane Ethanol1,3,5-Trimethylbenzene1,2,4-Trimethylbenzenen-Butylbenzenesec-ButylbenzeneIsopropylbenzenep-IsopropyltolueneNaphthalenen-PropylbenzeneStyreneEthylene Dibromide (EDB) (µg/L)GCLs NE 5,000 260,000 84,500 85,500 20,000 70,000 400 NE 25,000 28,500 6,900 8,500 25,000 NE 6,000 30,000 70,000 50
SM6200B (Historical Data Used 602/6230D/6210D/8260B) (µg/L)1
MW-1 Monitoring
03/06/12 47,870 16,900 20,500 1,730 8,740 1,220 1,830 1,020 <2,000 RL1 434 1,490 39.4 <10.0 RL1 56.4 <10.0 RL1 818 168 257 512.8
10/29/12 47,410 16,400 19,800 1,640 9,570 1,070 2,070 1,040 1,500 405 1,420 39.3 6.33 5.73 162 800 162 205 410
12/2012
01/16/13 39,610 14,200 16,600 1,410 7,400 1,100 1,720 951 ND<2,000 236 1,050 20.1 ND<10.0 37.5 ND<10.0 705 124 ND<10.0 699
02/14/13 30,418 11,800 12,300 998 5,320 952 1,730 810 ND<2,000 171 663 15.5 ND<10.0 26.4 ND<10.0 372 79.8 ND<10.0 529
07/23/13 7,561 1,940 3,230 361 2,030 61.4 285 135 ND<2,000 99.4 356 12.1 ND<10.0 ND<20.0 ND<10.0 144 36.6 ND<10.0 83.7
08/19/13 7,148 3,940 2,790 178 240 133 867 393 ND<500 ND<2.50 ND<2.50 ND<2.50 ND<2.50 ND<5.00 ND<2.50 27.3 10.7 ND<2.50 298
09/17/13 28,003 9,230 12,600 973 5,200 456 1,380 608 1,030 169 601 9.96 ND<2.50 22.7 ND<2.50 435 67.7 ND<2.50 409
03/27/14 19,708 4,820 8,620 918 5,350 200 572 359 ND<1,000 265 802 26.1 5.07 27.7 ND<5.00 375 95.1 81.3 213
09/16/14 17,496 3,840 7,940 846 4,870 140 666 316 ND<1,000 354 893 47.8 8.27 29.4 5.51 368 107 96.6 215
03/09/15 18,841 4,280 8,260 931 5,370 90.7 595 291 ND<1,000 292 819 41.3 8.16 30.7 ND<5.00 436 99.1 107 219
09/08/15 47,860 16,400 18,200 1,660 11,600 69.8 1,840 926 ND<1000 *583 1,940 43.8 ND<5.00 51.6 6.62 1,070 170 151 884
08/30/16 26,070 6,870 9,930 1,250 8,020 49.3 1,020 386 ND<1,000 434 1,070 43.6 11.6 39.7 7.42 503 134 152 295
06/19/92 34,900 8,400 17,000 1,400 8,100 ND --------------------------
05/20/93 46,500 10,000 21,000 2,500 13,000 ND --------------------------
09/28/93 24,400 3,400 5,800 2,200 13,000 ND 1,700 ------------------------
01/31/94 40,400 9,400 18,000 2,000 11,000 ND 1,200 ------------------------
05/23/94 99,440 16,500 41,700 6,440 34,800 ND ND ------------------------
08/22/94 50,020 11,400 23,500 2,120 13,000 45 900 ------------------------
12/05/94 188,900 27,700 77,900 12,400 70,900 ----------------------------
03/06/95 50,940 13,300 18,400 3,240 16,000 ----------------------------
06/07/95 32,870 8,280 13,700 2,430 8,460 120 1,170 ------------------------
09/13/95 58,050 13,500 24,300 3,150 17,100 ND 1,040 ------------------------
12/14/95 49,450 11,700 22,500 2,250 13,000 ND 900 ------------------------
03/06/96 67,900 15,300 30,600 3,600 18,400 ND 990 ------------------------
06/11/96 52,820 11,900 23,400 2,920 14,600 ND 2,480 ------------------------
11/07/97 40,970 9,500 19,000 1,670 10,800 11.3 675 ------------------------
10/29/98 52,340 9,740 23,300 2,960 16,340 ND ND ------------------------
01/05/99 6,861 2,000 1,990 981 1,890 ND 143 ------------------------
05/24/99 27,410 5,820 11,600 1,450 8,540 320 450 ------------------------
12/15/99 16,550 4,240 7,620 640 4,050 ND 170 ------------------------
06/20/00 34,660 8,490 15,500 1,300 9,370 ND 460 ------------------------
12/27/00 28,760 6,880 14,000 1,160 6,720 ND 735 ------------------------
06/18/01 43,660 11,300 19,400 1,560 11,400 ND 1,730 ------------------------
11/30/01 40,340 7,880 18,700 1,760 12,000 ND 780 ------------------------
06/27/02 33,740 6,140 13,700 1,300 12,600 ND 1,280 ------------------------
11/11/02 6,930 1,680 3,100 330 1,820 27.4 41.5 ------------------------
06/30/03 10,335 2,100 4,600 615 3,020 52 85 ------------------------
11/19/03 8,568 1,460 3,400 638 3,070 81 62 ------------------------
01/10/05 12,700 2,450 6,050 650 3,550 ND ND ------------------------
06/10/05 12,575 2,400 5,540 765 3,870 ND ND ------------------------
09/20/05 13,945 2,430 6,880 745 3,890 56.9 33.5 ------------------------
11/10/06 7,252 1,030 3,200 612 2,410 ND ND ------------------------
06/20/07 7,507 1,060 3,490 487 2,470 2.66 11.8 ------------------------
Monitoring
Injection
MW-3
Monitoring Well MW-2R converted to an Injection Well in December 2012
Monitoring
Monitoring Well MW-2R Destroyed
MW-2R
Continued
MonitoringMW-3R
2 of 5
Table 2: Groundwater Analytical Data
Revision Date: 12/13/2017 Incident Number: 9644 Facility ID #: Former ExxonMobil Facility #45552
6200/504.1
Well ID Date Incident Phase Total BTEX Benzene Toluene Ethylbenzene Total xylenes MTBEDiisopropyl Ether (IPE)1,2-Dichloroethane Ethanol1,3,5-Trimethylbenzene1,2,4-Trimethylbenzenen-Butylbenzenesec-ButylbenzeneIsopropylbenzenep-IsopropyltolueneNaphthalenen-PropylbenzeneStyreneEthylene Dibromide (EDB) (µg/L)GCLs NE 5,000 260,000 84,500 85,500 20,000 70,000 400 NE 25,000 28,500 6,900 8,500 25,000 NE 6,000 30,000 70,000 50
SM6200B (Historical Data Used 602/6230D/6210D/8260B) (µg/L)1
MW-1 Monitoring
08/19/08 12,596 1,700 6,080 866 3,950 4.63 26.1 ------------------------
05/20/09 5,557 1,350 755 582 2,870 < 1.00 < 1.00 ------------------------
03/17/10 2,242 150 457 195 1,440 2.03 4.31 ----------------------0.8
10/20/10 432.1 57.6 89.8 32.7 252 ND<1.00 2.43 ----------------------0.3977
03/30/11 1,240.6 124 530 85.6 501 ND<0.50 2.71 ND<0.50 ND<50 46.2 130 6.64 0.95 4.32 0.99 71 13.6 ND<0.50 1.595
10/07/11 10,483 666 4,430 887 4,500 2.06 CF7 ID2 6.49 CF7 ND<0.500 116 282 872 26.9 4.32 33.1 3.96 430 92.7 ND<0.500 4.011
07/14/92 ND ND ND ND ND ND --------------------------
05/21/93 ND ND ND ND ND ND --------------------------
09/28/93 4,530 1,300 1,500 230 1,500 ND 260 ------------------------
01/31/94 3,344 2,400 310 34 600 ND 660 ------------------------
05/23/94 896 667 85 8 136 ND ND ------------------------
08/22/94 375 306 10 ND 59 11 66 ------------------------
12/05/94 61 55 ND ND 6 ----------------------------
03/06/95 940 840 30 ND 70 ----------------------------
06/07/95 967 840 28 6 93 ND 197 ------------------------
09/13/95 3,645 1,980 675 90 900 ND 2,490 ------------------------
12/14/95 5,775 5,220 87 18 450 21 900 ------------------------
03/06/96 7,380 6,300 495 ND 585 ND 1,080 ------------------------
06/11/96 2,227 1,980 90 22 135 ND 1,240 ------------------------
11/07/97 471 441 4 7 19 15.5 158 ------------------------
10/29/98 4,790 300 225 665 3,600 ND ND ------------------------
01/05/99 1,080 1,010 21.7 3.4 45.3 53.2 152 ------------------------
05/24/99 14 14.1 ND ND ND 10.9 130 ------------------------
12/15/99 1.2 ND 1.2 ND ND ND ND ------------------------
10/20/10 2.26 1.18 1.08 ND<1.00 ND<3.00 ND<1.00 ND<1.00 ----------------------ND<0.02017
03/30/11 1.63 0.63 1 ND<0.50 ND<1.00 ND<0.50 ND<0.50 ND<0.50 ND<50 ND<0.50 ND<0.50 ND<0.50 ND<0.50 ND<0.50 ND<0.50 ND<5.0 ND<0.50 ND<0.50 ND<0.02251
07/14/92 12,500 600 1,200 1,800 8,900 ND --------------------------
05/21/93 12,310 470 940 1,900 9,000 170 --------------------------
09/28/93 11,000 900 1,400 1,300 7,400 180 300 ------------------------
01/31/94 8,900 170 330 1,400 7,000 110 220 ------------------------
05/23/94 9,188 128 360 1,540 7,160 ND ND ------------------------
08/22/94 9,690 256 464 1,270 7,700 267 314 ------------------------
12/05/94 55,790 1,300 3,020 7,470 44,000 ----------------------------
03/06/95 30,280 360 900 5,220 23,800 ----------------------------
06/07/95 7,370 290 370 1,170 5,540 78 165 ------------------------
09/13/95 3,600 270 360 1,170 1,800 ND ND ------------------------
12/14/95 7,790 135 135 1,620 5,900 ND ND ------------------------
03/06/96 5,360 158 112 1,600 3,490 ND ND ------------------------
06/11/96 5,926 248 68 1,330 4,280 ND ND ------------------------
11/07/97 4,866 308 138 1,030 3,390 34.5 ND ------------------------
10/29/98 2,742 2,630 31.6 3.2 77 50.7 580 ------------------------
01/05/99 1,675 176 75.2 394 1,030 ND ND ------------------------
05/24/99 1,346 82 102 383 779 435 ND ------------------------
12/15/99 1,536 8.7 39.9 177 1,310 53.4 34 ------------------------
06/20/00 846 14.0 33.5 136 662 83.1 99 ------------------------
12/27/00 238 2.0 6.9 38.8 190 6.3 6.6 ------------------------
06/18/01 53 ND 1.5 7.8 44.1 5.4 2 ------------------------
06/27/02 44 ND 1.1 3.9 39.2 ND ND ------------------------
06/30/03 ND ND ND ND ND ND ND ------------------------
MonitoringMW-5
MW-4 Monitoring
MW-3R
Continued Monitoring
3 of 5
Table 2: Groundwater Analytical Data
Revision Date: 12/13/2017 Incident Number: 9644 Facility ID #: Former ExxonMobil Facility #45552
6200/504.1
Well ID Date Incident Phase Total BTEX Benzene Toluene Ethylbenzene Total xylenes MTBEDiisopropyl Ether (IPE)1,2-Dichloroethane Ethanol1,3,5-Trimethylbenzene1,2,4-Trimethylbenzenen-Butylbenzenesec-ButylbenzeneIsopropylbenzenep-IsopropyltolueneNaphthalenen-PropylbenzeneStyreneEthylene Dibromide (EDB) (µg/L)GCLs NE 5,000 260,000 84,500 85,500 20,000 70,000 400 NE 25,000 28,500 6,900 8,500 25,000 NE 6,000 30,000 70,000 50
SM6200B (Historical Data Used 602/6230D/6210D/8260B) (µg/L)1
MW-1 Monitoring
03/17/10 7.41 ND<1.00 ND<1.00 1.78 5.63 ND<1.00 ND<1.00 ----------------------ND<0.02000
10/20/10 BDL ND<1.00 ND<1.00 ND<1.00 ND<3.00 ND<1.00 ND<1.00 ----------------------ND<0.02017
03/30/11 BDL ND<0.50 ND<0.50 ND<0.50 ND<1.00 ND<0.50 ND<0.50 ND<0.50 ND<50 40.7 26.6 32.1 1.05 ND<0.50 3.06 ND<5.0 2.34 ND<0.50 ND<0.02011
07/14/92 436 240 88 18 90 17 --------------------------
05/21/93 338 180 36 19 103 22 --------------------------
09/28/93 227 140 17 7.5 62 35 ND ------------------------
08/22/94 75 44 6 3 22 18 ND ------------------------
09/13/95 6 3 ND ND 3 10 25 ------------------------
12/15/99 ND ND ND ND ND ND ND ------------------------
06/30/03 ND ND ND ND ND ND ND ------------------------
03/17/10 BDL ND<1.00 ND<1.00 ND<1.00 ND<3.00 ND<1.00 ND<1.00 ----------------------ND<0.02000
05/21/93 ND ND ND ND ND ND --------------------------
09/28/93 ND ND ND ND ND ND ND ------------------------
05/21/93 ND ND ND ND ND ND --------------------------
09/28/93 20 2.4 5 1.7 11 ND ND ------------------------
08/22/94 3 ND ND ND 3 ND ND ------------------------
09/13/95 ND ND ND ND ND ND ND ------------------------
09/24/03 45,140 9,960 19,500 2,680 13,000 516 1,230 ------------------------
11/19/03 69,550 15,400 23,400 4,950 25,800 1,440 5,110 ------------------------
01/10/05 69,800 22,700 29,900 2,400 14,800 ND 4,100 ------------------------
06/10/05 72,820 24,200 31,600 2,720 14,300 725 4,130 ------------------------
09/20/05 60,890 18,000 27,600 2,290 13,000 679 2,840 ------------------------
11/10/06 68,090 19,600 36,100 2,090 10,300 514 3,080 ------------------------
06/20/07 72,710 22,700 33,100 2,710 14,200 494 2,860 ------------------------
08/19/08 53,640 28,300 11,500 2,340 11,500 1,560 4,190 ------------------------
03/17/10 62,490 18,100 26,600 2,590 15,200 2,380 2,620 ----------------------573.1
10/20/10 59,300 17,400 26,900 2,500 12,500 1,150 3,110 ----------------------625
03/30/11 67,170 23,200 31,200 2,270 10,500 758 3,630 1,660 1,740 438 1,570 37.6 ND<10 66.4 ND<10 792 189 619 34.09
10/07/11 62,500 18,300 28,700 2,600 12,900 338 ID2 2,730 1,120 953 561 2,060 54.3 8.43 76.4 7.29 1,020 281 569 683.8
03/06/12 47,140 14,700 21,900 1,790 8,750 294 ID2 2,040 1,030 <2,000 RL1 403 1,450 41.2 <10.0 RL1 57.4 <10.0 RL1 820 182 445 630.4
10/29/12 40,970 11,600 18,500 1,640 9,230 185 1,750 863 ND<5.00 375 1,370 37.8 6.4 47.0 ND<5.00 765 160 411 445
12/2012
01/16/13 33,760 9,600 15,400 1,440 7,320 166 1,580 794 ND<2,000 251 1,110 24.3 ND<10.0 43.8 ND<10.0 711 148 ND<10.0 902
02/14/13 38,540 12,200 17,700 1,480 7,160 153 1,830 848 ND<2,000 239 981 27.8 ND<10.0 43.5 ND<10.0 559 143 ND<10.0 1,100
07/23/13 38,770 10,100 18,500 1,580 8,590 127 1,030 488 ND<2,000 327 1,200 34.9 ND<10.0 33.9 ND<10.0 536 134 262 395
08/19/13 15,600 2,950 6,570 1,220 4,860 58.3 1,450 511 ND<2,000 418 1,720 130 21.8 69.0 13.1 734 265 ND<10.0 618
09/17/13 23,060 3,930 10,600 1,320 7,210 131 1,030 404 ND<2,000 305 1,240 39.8 ND<10.0 48.5 ND<10.0 749 169 ND<10.0 403
03/27/14 42,320 10,000 19,800 1,820 10,700 74.3 1,330 766 ND<2,000 501 1,700 49.8 10.4 55.0 ND<10.0 845 207 205 551
09/16/14 56,490 13,300 28,900 2,190 12,100 57.3 1,920 931 ND<2,000 464 1,690 44.6 10.5 59.7 ND<10.0 814 204 324 644
03/09/15 53,630 14,200 25,500 2,130 11,800 ND<10.0 1,650 752 ND<2,000 444 1,540 ND<10.0 14.7 54.6 ND<10.0 777 180 356 520
09/08/15 61,370 16,500 29,400 2,370 13,100 35.9 1,550 713 ND<2000 *484 1,670 ND<10.0 ND<10.0 50.4 ND<10.0 838 188 ND<10.0 567
08/30/16 68,980 17,600 31,600 2,680 17,100 23.9 1,660 681 ND<2,000 582 1,920 60.2 22.0 74.9 11.2 989 265 494 664
10/11/17 59,300 11,000 33,000 2,300 13,000 ND<250 890 ND<250 ND<100,000 440 1,700 ND<250 ND<250 ND<250 ND<250 860 ND<250 ND<250 550
12/10/12 1,479 382 579 76.2 442 3.87 53.3 27.5 ND<100 45.8 115 7.47 ND<0.500 2.97 0.877 55.6 12.2 19.1 35.4
12/13/12 81,640 26,800 37,600 2,940 14,300 81.2 3,640 1,510 1,820 608 1,990 58 7.97 71.6 8.3 1,050 243 833 2,460
01/16/13 88,700 29,400 39,700 3,200 16,400 192 3,670 1,970 ND<5,000 533 2,050 42.8 ND<25.0 77.7 ND<25.0 1,040 246 808 1,240
02/13/13 65,960 22,400 29,600 2,160 11,800 129 3,020 1,300 ND<5,000 447 1,440 41.8 ND<25.0 50.6 ND<25.0 697 148 606 1,280
07/23/13 71,310 23,400 32,100 2,710 13,100 170 2,700 1,230 ND<5,000 453 1,690 42.0 ND<25.0 50.8 ND<25.0 769 184 589 792
07/30/13 86,680 30,200 38,800 2,980 14,700 188 4,680 1,970 ND<5,000 482 1,790 44.7 ND<25.0 69.9 ND<25.0 802 215 603 967
08/19/13 4.25 2.75 ND<0.500 ND<0.500 ND<0.500 ND<0.500 ND<0.500 2.23 ND<100 ND<0.500 ND<0.500 ND<0.500 ND<0.500 ND<1.00 ND<0.500 ND<5.00 ND<0.500 ND<0.500 1.22
09/17/13 77,660 26,300 33,900 2,760 14,700 293 2,880 1,570 1,150 542 1,930 58.9 14.7 74.9 6.51 930 232 567 884
Monitoring
Monitoring Well MW-9 converted to an Injection Well in December 2012
MW-7
Monitoring
MW-8
Monitoring
Monitoring
MW-10**
Monitoring
Monitoring
MW-6
MW-9
Injection
MW-5
Continued
4 of 5
Table 2: Groundwater Analytical Data
Revision Date: 12/13/2017 Incident Number: 9644 Facility ID #: Former ExxonMobil Facility #45552
6200/504.1
Well ID Date Incident Phase Total BTEX Benzene Toluene Ethylbenzene Total xylenes MTBEDiisopropyl Ether (IPE)1,2-Dichloroethane Ethanol1,3,5-Trimethylbenzene1,2,4-Trimethylbenzenen-Butylbenzenesec-ButylbenzeneIsopropylbenzenep-IsopropyltolueneNaphthalenen-PropylbenzeneStyreneEthylene Dibromide (EDB) (µg/L)GCLs NE 5,000 260,000 84,500 85,500 20,000 70,000 400 NE 25,000 28,500 6,900 8,500 25,000 NE 6,000 30,000 70,000 50
SM6200B (Historical Data Used 602/6230D/6210D/8260B) (µg/L)1
MW-1 Monitoring
03/27/14 74,680 17,800 35,500 3,380 18,000 49.5 2,370 1,290 ND<5,000 747 2,320 74.2 ND<25.0 84.1 ND<25.0 997 289 827 872
09/16/14 75,090 21,200 36,300 2,790 14,800 47.3 2,890 1,380 ND<5,000 660 1,940 59.2 ND<25.0 70.4 ND<25.0 945 228 686 915
03/09/15 85,470 26,800 39,000 3,270 16,400 ND<25.0 3,000 ND<25.0 ND<5,000 557 2,010 ND<25.0 ND<25.0 77.6 ND<25.0 1,040 242 907 989
09/08/15 89,470 27,100 41,800 3,470 17,100 28.5 3,030 1,270 ND<5,000 *596 2,140 ND<25.0 ND<25.0 64.8 ND<25.0 889 223 ND<25.0 1,000
08/30/16 70,550 22,500 30,100 3,150 14,800 ND<25.0 2,230 1,020 ND<5,000 710 2,050 70.5 29.0 85.9 ND<25.0 945 262 711 782
10/11/17 78,900 23,000 38,000 2,900 15,000 ND<250 1,500 340 ND<100,000 440 1,800 ND<250 ND<250 ND<250 ND<250 890 ND<250 ND<250 850
12/10/12 87,220 31,200 38,700 3,020 14,300 186 3,540 1,570 1,630 546 1,950 50.1 7.32 71.5 6.93 1,080 254 810 1,100
12/13/12 47,730 18,000 19,600 1,630 8,500 297 2,150 196 1,220 523 1,610 48.9 5.6 55.4 6.43 945 154 191 878
01/16/13 76,860 26,100 30,900 2,960 16,900 452 3,350 1,860 ND<5,000 686 2,660 55.5 ND<25.0 80.8 ND<25.0 1,270 270 660 1,240
02/14/13 60,530 24,700 24,200 1,780 9,850 637 3,110 1,400 ND<5,000 393 1,510 33.8 ND<25.0 ND<50.0 ND<25.0 717 143 343 1,150
07/23/13 75,220 27,700 32,500 2,620 12,400 854 3,370 1,520 ND<5,000 485 1,950 43.9 ND<25.0 54.1 ND<25.0 896 203 354 771
07/30/13 15,091 7,810 5,730 391 1,160 597 2,500 880 ND<5,000 ND<25.0 123 ND<25.0 ND<25.0 ND<50.0 ND<25.0 252 31.2 ND<25.0 499
08/19/13 63,980 24,500 25,500 2,180 11,800 904 2,990 1,430 ND<5,000 410 1,610 33.9 ND<25.0 ND<50.0 ND<25.0 604 164 228 717
09/17/13 75,200 27,900 30,500 2,600 14,200 829 3,660 1,890 ND<5,000 508 1,980 45.8 ND<25.0 70.8 ND<25.0 1,020 224 373 883
03/27/14 74,940 23,700 33,900 2,740 14,600 421 2,580 1,590 ND<5,000 636 2,250 64.8 ND<25.0 77.8 ND<25.0 992 262 518 895
09/16/14 72,800 22,400 34,000 2,500 13,900 220 2,820 1,510 ND<5,000 598 2,180 50.7 ND<25.0 72.9 ND<25.0 994 233 528 909
03/09/15 55,580 19,000 21,300 2,180 13,100 89.5 2,650 1,310 ND<5,000 640 2,280 53.4 ND<25.0 70.6 ND<25.0 1,100 211 341 948
09/08/15 35,130 9,070 16,200 1,470 8,390 128 1,310 543 ND<5,000 *376 1,090 ND<25.0 ND<25.0 ND<50.0 ND<25.0 403 101 ND<25.0 432
08/30/16 48,310 14,300 20,100 2,210 11,700 57.8 1,990 868 ND<5,000 662 2,190 67.9 29.0 76.6 ND<25.0 989 246 249 671
10/12/17 62,200 19,000 27,000 2,200 14,000 ND<250 2,200 600 ND<100,000 600 2,200 ND<250 ND<250 ND<250 ND<250 1,000 ND<250 ND<250 810
08/11/92 8,140 3,600 3,100 240 1,200 ND --------------------------
05/21/93 408 230 62 3.3 113 ND --------------------------
09/28/93 3 0.8 0.9 ND 0.9 ND ND ------------------------
08/22/94 42 18 ND ND 24 ND ND ------------------------
09/13/95 ND ND ND ND ND ND ND ------------------------
01/16/13 15,001 3,070 6,820 981 4,130 ND<25.0 1,070 437 ND<5,000 596 797 ND<25.0 ND<25.0 ND<50.0 ND<25.0 465 108 ND<25.0 753
02/14/13 30,120 11,000 12,500 1,190 5,430 55.3 2,930 1,040 1,210 152 787 19.4 6.39 39.0 ND<5.00 644 114 ND<5.00 1,090
07/23/13 52,990 15,700 25,100 1,890 10,300 131 2,460 1,010 1,450 346 1,380 34.1 7.29 54.0 ND<10.0 753 154 126 785
08/19/13 80,940 26,100 36,000 2,940 15,900 257 3,020 1,330 ND<2,000 582 2,080 62.5 11.7 75.1 ND<10.0 787 250 661 833
09/17/13 119.6 36.0 29.5 16.6 37.5 9.27 288 114 263 ND<0.500 59.6 2.18 0.868 2.32 ND<0.500 69.8 8.45 ND<0.500 95.4
03/27/14 76,990 24,700 34,000 1,490 16,800 112 1,750 991 ND<2,000 248 1,350 34.0 ND<10.0 46.7 ND<10.0 888 162 ND<10.0 835
09/16/14 47,170 13,500 22,300 1,730 9,640 79.7 1,900 954 ND<2,000 414 1,530 37.4 10.7 51.7 ND<10.0 914 177 ND<10.0 694
03/09/15 62,950 19,500 28,200 2,350 12,900 ND<10.0 2,530 1,170 ND<2,000 492 1,860 52.9 14.1 66.9 18.4 1130 218 237 911
09/08/15 62,140 21,300 23,700 2,640 14,500 35.9 3,030 1,220 ND<2,000 *544 2,010 ND<10.0 ND<10.0 65.4 ND<10.0 1,020 232 255 1,010
08/30/16 65,020 18,300 28,800 2,620 15,300 18.2 1,710 756 ND<2,000 630 1,900 51.2 24.7 73.7 11.0 967 250 339 731
10/11/17 69,700 17,000 35,000 2,700 15,000 ND<250 1,900 510 ND<100,000 470 1,900 ND<250 ND<250 ND<250 ND<250 960 ND<250 ND<250 910
Notes:
GCL = Gross Contamination Level.
NE = Not Established
Bold = Above applicable GCL
BTEX = Benzene, Toluene, Ethylbenzene, Xylene.
MTBE = Methyl tert-Butyl Ether.
-- = Not Analyzed for specific compound
ND< # = Non-detect above laboratory reporting limit
1 = Prior to March 2011 event, samples were analyzed via 8260B (historical data used 602/6230D/6210D), March 2011 samples were analyzed via SM6200 B.
2 = Environmental Protection Agency 504.1
3 = Prior to March 2011 event, samples were analyzed via 3030C, March 2011 samples were analyzed via total characteristic leaching procedure (TCLP) SW846 1311/6010C.
** = Injection well INJ-1 and INJ-3 converted to monitoring well MW-10 and MW-11, respectively in December 2012
ID2 = Identification based on analytical judgement
CF7 = Result may be elevated due to carry over from previously analyzed sample
RL1 = Reporting limit raised due to sample matrix effects
* = LCS or LCSD is outside acceptance limits
MW-10**
Continued Monitoring
MW-11**Monitoring
INJ-2 Injection
DW-1 Monitoring
5 of 5

FIGURES

SITE LOCATION
REFERENCE: BASE MAP USGS 7.5. MIN. TOPO. QUAD., HENDERSONVILLE, NORTH CAROLINA, 1965, PHOTOREVISED 1990.
Approximate Scale: 1 in. = 2000 ft.
0 2000'4000'
NORTH CAROLINA
SITE LOCATION MAP
1IMAGES: NC_Hendersonville.tifXREFS:AREA
LOCATION
EXXONMOBIL ENVIRONMENTAL SERVICES
EXXONMOBIL SERVICE STATION #4-5552
1920 4 SEASONS BOULEVARD, HENDERSONVILLE, NC
ANNUAL CAP MONITORING REPORT - 2017
CITY: SYRACUSE, NY DIV/GROUP: EBC-IM/DV DB/LD: L.POSENAUER PM: H.GOODELL TM: J.FARLEY LYR:(Opt)ON=*;OFF=*REF*D:\PROJECTS\03.EXON MOBILE\25.45552\E-Drawings\EM45552N01.dwg LAYOUT: 1 SAVED: 11/7/2017 10:04 AM ACADVER: 22.0S (LMS TECH) PAGESETUP: ---- PLOTSTYLETABLE: PLTFULL.CTB PLOTTED: 11/7/2017 10:19 AM BY: CHANDRAKANTH THORWATHFIGURE
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SITE MAP
FIGURE
EXXONMOBIL ENVIRONMENTAL SERVICES
EXXONMOBIL SERVICE STATION #4-55521920 4 SEASONS BOULEVARD, HENDERSONVILLE, NC
ANNUAL CAP MONITORING REPORT - 2017
2IMAGES:XREFS: EM45552X00 EM45552X01CITY: SYRACUSE, NY DIV/GROUP: EBC-IM/DV DB/LD: L.POSENAUER PM: H.GOODELL TM: J.FARLEY LYR:(Opt)ON=*;OFF=*REF*D:\PROJECTS\03.EXON MOBILE\25.45552\E-Drawings\EM45552B02-W03-C04.dwg LAYOUT: 2 SAVED: 12/1/2017 11:47 AM ACADVER: 20.0S (LMS TECH) PAGESETUP: ---- PLOTSTYLETABLE: ---- PLOTTED: 12/1/2017 11:48 AM BY: CHANDRAKANTH THORWATHMW-2R
4 SE
A
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(U.S.
HI
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6
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CAN
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(DRY)
DW-1
(74.70)
MW-8
(NG)
MW-1
(78.60)
MW-6
(77.87)
MW-5
(77.62)
MW-9(75.90)
INJ-2(NS)
MW-10(NS)
MW-11(NS)
MW-3R
(76.70)
VENT
EXXON
STATION75.00MW-7
75.0076.0077.0078.0078.0077.0076.00
POTENTIOMETRIC SURFACE MAP
OCTOBER 11, 2017
FIGURE
EXXONMOBIL ENVIRONMENTAL SERVICES
EXXONMOBIL SERVICE STATION #4-55521920 4 SEASONS BOULEVARD, HENDERSONVILLE, NC
ANNUAL CAP MONITORING REPORT - 2017
3IMAGES:XREFS: EM45552X00 EM45552X01CITY: SYRACUSE, NY DIV/GROUP: EBC-IM/DV DB/LD: L.POSENAUER PM: H.GOODELL TM: J.FARLEY LYR:(Opt)ON=*;OFF=*REF*D:\PROJECTS\03.EXON MOBILE\25.45552\E-Drawings\EM45552B02-W03-C04.dwg LAYOUT: 3 SAVED: 12/1/2017 11:40 AM ACADVER: 20.0S (LMS TECH) PAGESETUP: ---- PLOTSTYLETABLE: ---- PLOTTED: 12/1/2017 11:42 AM BY: CHANDRAKANTH THORWATH(78.60)
78.00
(NS)
(NG)
(DRY)MW-2R
4 SE
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HI
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ASP
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DW-1
MW-8
MW-1
MW-6
MW-5
MW-9
INJ-2
MW-10
MW-11
MW-3R
VENT
EXXON
STATION
MW-7
GROUNDWATER ANALYTICAL MAP
FIGURE
EXXONMOBIL ENVIRONMENTAL SERVICES
EXXONMOBIL SERVICE STATION #4-55521920 4 SEASONS BOULEVARD, HENDERSONVILLE, NC
ANNUAL CAP MONITORING REPORT - 2017
4IMAGES:XREFS: EM45552X00 EM45552X01CITY: SYRACUSE, NY DIV/GROUP: EBC-IM/DV DB/LD: L.POSENAUER PM: H.GOODELL TM: J.FARLEY LYR:(Opt)ON=*;OFF=*REF*D:\PROJECTS\03.EXON MOBILE\25.45552\E-Drawings\EM45552B02-W03-C04.dwg LAYOUT: 4 SAVED: 12/1/2017 11:40 AM ACADVER: 20.0S (LMS TECH) PAGESETUP: ---- PLOTSTYLETABLE: ---- PLOTTED: 12/1/2017 11:43 AM BY: CHANDRAKANTH THORWATHSAMPLE LOCATION
DATE DD/MM/YYYY
ABBREV. GCLs CONSTITUENT
B 5,000 BENZENE
T 260,000 TOLUENE
E 84,500 ETHYLBENZENE
X 85,500 TOTAL XYLENES
MTBE 20,000 METHYL TERT-BUTYL ETHER
IPE 70,000 DIISOPROPYL ETHER
12DCE 400 1,2-DICHLOROETHANE
EBD 50 ETHYLENE DIBROMIDE
GCL
BOLD
MW-9
Date 09/08/2015 08/30/2016 10/11/2017
B 16,500 17,600 11,000
T 29,400 31,600 33,000
E 2,370 2,680 2,300
X 13,100 17,100 13,000
MTBE 35.9 23.9 ND<250
IPE 1,550 1,660 890
12DCE 713 681 ND<250
EDB 567 664 550
MW-10
Date 09/08/2015 08/30/2016 10/11/2017
B 27,100 22,500 23,000
T 41,800 30,100 38,000
E 3,470 3,150 2,900
X 17,100 14,800 15,000
MTBE 28.5 ND<25.0 ND<250
IPE 3,030 2,230 1,500
12DCE 1,270 1,020 340
EDB 1,000 782 850
INJ-2
Date 09/08/2015 08/30/2016 10/11/2017
B 21,300 18,300 17,000
T 23,700 28,800 35,000
E 2,640 2,620 2,700
X 14,500 15,300 15,000
MTBE 35.9 18.2 ND<250
IPE 3,030 1,710 1,900
12DCE 1,220 756 510
EDB 1,010 731 910
MW-11
Date 09/08/2015 08/30/2016 10/12/2017
B 9,070 14,300 19,000
T 16,200 20,100 27,000
E 1,470 2,210 2,200
X 8,390 11,700 14,000
MTBE 128 57.8 ND<250
IPE 1,310 1,990 2,200
12DCE 543 868 600
EDB 432 671 810
MW-2R
5,000 4 SE
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EXXON
STATION
MW-4
DW-1
MW-8
MW-1
MW-6
MW-5
MW-9
(11,000)
INJ-2
(17,000)
MW-10
(23,000)
MW-11(19,000)
MW-3R
MW-7
BENZENE ISOCONCENTRATION MAP
OCTOBER 11-12, 2017
FIGURE
EXXONMOBIL ENVIRONMENTAL SERVICES
EXXONMOBIL SERVICE STATION #4-55521920 4 SEASONS BOULEVARD, HENDERSONVILLE, NC
ANNUAL CAP MONITORING REPORT - 2017
5IMAGES:XREFS: EM45552X00 EM45552X01CITY: SYRACUSE, NY DIV/GROUP: EBC-IM/DV DB/LD: L.POSENAUER PM: H.GOODELL TM: J.FARLEY LYR:(Opt)ON=*;OFF=*REF*D:\PROJECTS\03.EXON MOBILE\25.45552\E-Drawings\EM45552C05-C06-C07.dwg LAYOUT: 5 SAVED: 12/1/2017 11:33 AM ACADVER: 20.0S (LMS TECH) PAGESETUP: ---- PLOTSTYLETABLE: ---- PLOTTED: 12/1/2017 11:44 AM BY: CHANDRAKANTH THORWATH(23,000)
5,000
MW-2R
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EXXON
STATION
MW-4
DW-1
MW-8
MW-1
MW-6
MW-5
INJ-2(510)
MW-10(340)
MW-11(600)
MW-3R
MW-7
MW-9
(<250)
400
1,2-DICHLOROETHANE
ISOCONCENTRATION MAP
OCTOBER 11-12, 2017
FIGURE
EXXONMOBIL ENVIRONMENTAL SERVICES
EXXONMOBIL SERVICE STATION #4-55521920 4 SEASONS BOULEVARD, HENDERSONVILLE, NC
ANNUAL CAP MONITORING REPORT - 2017
6IMAGES:XREFS: EM45552X00 EM45552X01CITY: SYRACUSE, NY DIV/GROUP: EBC-IM/DV DB/LD: L.POSENAUER PM: H.GOODELL TM: J.FARLEY LYR:(Opt)ON=*;OFF=*REF*D:\PROJECTS\03.EXON MOBILE\25.45552\E-Drawings\EM45552C05-C06-C07.dwg LAYOUT: 6 SAVED: 12/1/2017 11:33 AM ACADVER: 20.0S (LMS TECH) PAGESETUP: ---- PLOTSTYLETABLE: ---- PLOTTED: 12/1/2017 11:46 AM BY: CHANDRAKANTH THORWATH(600)
400
MW-2R
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EXXON
STATION
MW-4
DW-1
MW-8
MW-1
MW-6
MW-5
MW-9
(550)
INJ-2
(910)
MW-10(850)
MW-11(810)
MW-3R
50
MW-7
ETHYLENE DIBROMIDE
ISOCONCENTRATION MAP
OCTOBER 11-12, 2017
FIGURE
EXXONMOBIL ENVIRONMENTAL SERVICES
EXXONMOBIL SERVICE STATION #4-55521920 4 SEASONS BOULEVARD, HENDERSONVILLE, NC
ANNUAL CAP MONITORING REPORT - 2017
7IMAGES:XREFS: EM45552X00 EM45552X01CITY: SYRACUSE, NY DIV/GROUP: EBC-IM/DV DB/LD: L.POSENAUER PM: H.GOODELL TM: J.FARLEY LYR:(Opt)ON=*;OFF=*REF*D:\PROJECTS\03.EXON MOBILE\25.45552\E-Drawings\EM45552C05-C06-C07.dwg LAYOUT: 7 SAVED: 12/1/2017 11:46 AM ACADVER: 20.0S (LMS TECH) PAGESETUP: ---- PLOTSTYLETABLE: ---- PLOTTED: 12/1/2017 11:46 AM BY: CHANDRAKANTH THORWATH(910)
50
MW-2R

APPENDIX A

Groundwater Laboratory Analytical Report and Chain of Custody Data
– October 24, 2017

ANALYSIS REPORT

Prepared by:

Eurofins Lancaster Laboratories Environmental
2425 New Holland Pike
Lancaster, PA 17601
Prepared for:

ExxonMobil c/o Arcadis
801 Corporate Center Drive
Suite 300
Raleigh NC 27607

Report Date: October 24, 2017 20:45

Project: 45552 - Hendersonville, NC

Account #: 42309
Group Number: 1862891
PO Number: B0085851.0039
Release Number: DUGAN
State of Sample Origin: NC

Regulatory agencies do not accredit laboratories for all methods, analytes, and matrices. Our current
scopes of accreditation can be viewed at http://www.eurofinsus.com/environment-
testing/laboratories/eurofins-lancaster-laboratories-environmental/resources/certifications/ . To request
copies of prior scopes of accreditation, contact your project manager.

Electronic Copy To Arcadis Attn: Paul Goodell
Electronic Copy To Arcadis Attn: Francisco Corella

Respectfully Submitted,

[phone]

Page 1 of 22

SAMPLE INFORMATION

Client Sample Description

Sample Collection
Date/Time

ELLE#
MW-9 Grab Groundwater 10/11/2017 16:15 9263606
MW-10 Grab Groundwater 10/11/2017 16:30 9263607
MW-11 Grab Groundwater 10/12/2017 09:30 9263608
INJ-2 Grab Groundwater 10/11/2017 16:45 9263609
TRIP BLANK Water 10/11/2017 9263610

The specific methodologies used in obtaining the enclosed analytical results are indicated on the Laboratory
Sample Analysis Record.

Page 2 of 22

ExxonMobil c/o Arcadis
ELLE Sample #: WW 9263606
ELLE Group #: 1862891
Matrix: Groundwater
Sample Description: MW-9 Grab Groundwater
EM# 45552
1920 4 Seasons Rd - Hendersonville, NC

Project Name: 45552 - Hendersonville, NC
Collection Date/Time: 10/11/2017 16:15
Submittal Date/Time: 10/13/2017 09:30
Analysis Name CAT
No.
Dilution
Factor CAS Number Result Limit of
Quantitation
SM 6200 B-1997 ug/l ug/l GC/MS Volatiles
10460 Benzene 71-43-2 11,000 250 500
10460 Bromobenzene 108-86-1 < 250 250 500
10460 Bromochloromethane 74-97-5 < 250 250 500
10460 Bromodichloromethane 75-27-4 < 250 250 500
10460 Bromoform 75-25-2 < 250 250 500
10460 Bromomethane 74-83-9 < 250 250 500
10460 n-Butylbenzene 104-51-8 < 250 250 500
10460 sec-Butylbenzene 135-98-8 < 250 250 500
10460 tert-Butylbenzene 98-06-6 < 250 250 500
10460 Carbon Tetrachloride 56-23-5 < 250 250 500
10460 Chlorobenzene 108-90-7 < 250 250 500
10460 Chloroethane 75-00-3 < 250 250 500
10460 Chloroform 67-66-3 < 250 250 500
10460 Chloromethane 74-87-3 < 400 400 500
10460 2-Chlorotoluene 95-49-8 < 250 250 500
10460 4-Chlorotoluene 106-43-4 < 250 250 500
10460 1,2-Dibromo-3-chloropropane 96-12-8 < 1,000 1,000 500
10460 Dibromochloromethane 124-48-1 < 250 250 500
10460 1,2-Dibromoethane 106-93-4 550 250 500
10460 Dibromomethane 74-95-3 < 250 250 500
10460 1,2-Dichlorobenzene 95-50-1 < 250 250 500
10460 1,3-Dichlorobenzene 541-73-1 < 250 250 500
10460 1,4-Dichlorobenzene 106-46-7 < 250 250 500
10460 Dichlorodifluoromethane 75-71-8 < 250 250 500
10460 1,1-Dichloroethane 75-34-3 < 250 250 500
10460 1,2-Dichloroethane 107-06-2 < 250 250 500
10460 1,1-Dichloroethene 75-35-4 < 250 250 500
10460 cis-1,2-Dichloroethene 156-59-2 < 250 250 500
10460 trans-1,2-Dichloroethene 156-60-5 < 250 250 500
10460 1,2-Dichloropropane 78-87-5 < 250 250 500
10460 1,3-Dichloropropane 142-28-9 < 250 250 500
10460 2,2-Dichloropropane 594-20-7 < 250 250 500
10460 1,1-Dichloropropene 563-58-6 < 250 250 500
10460 cis-1,3-Dichloropropene 10061-01-5 < 250 250 500
10460 trans-1,3-Dichloropropene 10061-02-6 < 250 250 500
10460 Ethanol 64-17-5 < 100,000 100,000 500
10460 Ethylbenzene 100-41-4 2,300 250 500
10460 Hexachlorobutadiene 87-68-3 < 250 250 500
10460 di-Isopropyl Ether 108-20-3 890 250 500
10460 Isopropylbenzene 98-82-8 < 250 250 500
10460 p-Isopropyltoluene 99-87-6 < 250 250 500
10460 Methyl Tertiary Butyl Ether 1634-04-4 < 250 250 500
10460 Methylene Chloride 75-09-2 < 400 400 500
10460 Naphthalene 91-20-3 860 250 500
10460 n-Propylbenzene 103-65-1 < 250 250 500
10460 Styrene 100-42-5 < 250 250 500
10460 1,1,1,2-Tetrachloroethane 630-20-6 < 250 250 500
10460 1,1,2,2-Tetrachloroethane 79-34-5 < 250 250 500
10460 Tetrachloroethene 127-18-4 < 250 250 500
Page 3 of 22

ExxonMobil c/o Arcadis
ELLE Sample #: WW 9263606
ELLE Group #: 1862891
Matrix: Groundwater
Sample Description: MW-9 Grab Groundwater
EM# 45552
1920 4 Seasons Rd - Hendersonville, NC

Project Name: 45552 - Hendersonville, NC
Collection Date/Time: 10/11/2017 16:15
Submittal Date/Time: 10/13/2017 09:30
Analysis Name CAT
No.
Dilution
Factor CAS Number Result Limit of
Quantitation
SM 6200 B-1997 ug/l ug/l GC/MS Volatiles
10460 Toluene 108-88-3 33,000 2,500 5000
10460 1,2,3-Trichlorobenzene 87-61-6 < 250 250 500
10460 1,2,4-Trichlorobenzene 120-82-1 < 250 250 500
10460 1,1,1-Trichloroethane 71-55-6 < 250 250 500
10460 1,1,2-Trichloroethane 79-00-5 < 250 250 500
10460 Trichloroethene 79-01-6 < 250 250 500
10460 Trichlorofluoromethane 75-69-4 < 250 250 500
10460 1,2,3-Trichloropropane 96-18-4 < 1,000 1,000 500
10460 1,2,4-Trimethylbenzene 95-63-6 1,700 250 500
10460 1,3,5-Trimethylbenzene 108-67-8 440 250 500
10460 Vinyl Chloride 75-01-4 < 250 250 500
10460 Xylene (Total) 1330-20-7 13,000 250 500
Sample Comments
State of North Carolina Lab Certification No. 521
All QC is compliant unless otherwise noted. Please refer to the Quality
Control Summary for overall QC performance data and associated samples.
Laboratory Sample Analysis Record
Analyst Dilution
Factor Trial# Batch# Analysis
Date and Time
CAT
No. Analysis Name Method
10460 VOCs- 25ml Water by 6200B SM 6200 B-1997 1 G172931AB 10/23/2017 14:38 Kevin A Sposito 500
10460 VOCs- 25ml Water by 6200B SM 6200 B-1997 1 G172931AB 10/23/2017 15:02 Kevin A Sposito 5000
01163 GC/MS VOA Water Prep SW-846 5030B 1 G172931AB 10/23/2017 14:38 Kevin A Sposito 500
01163 GC/MS VOA Water Prep SW-846 5030B 2 G172931AB 10/23/2017 15:02 Kevin A Sposito 5000
Page 4 of 22

ExxonMobil c/o Arcadis
ELLE Sample #: WW 9263607
ELLE Group #: 1862891
Matrix: Groundwater
Sample Description: MW-10 Grab Groundwater
EM# 45552
1920 4 Seasons Rd - Hendersonville, NC

Project Name: 45552 - Hendersonville, NC
Collection Date/Time: 10/11/2017 16:30
Submittal Date/Time: 10/13/2017 09:30
Analysis Name CAT
No.
Dilution
Factor CAS Number Result Limit of
Quantitation
SM 6200 B-1997 ug/l ug/l GC/MS Volatiles
10460 Benzene 71-43-2 23,000 2,500 5000
10460 Bromobenzene 108-86-1 < 250 250 500
10460 Bromochloromethane 74-97-5 < 250 250 500
10460 Bromodichloromethane 75-27-4 < 250 250 500
10460 Bromoform 75-25-2 < 250 250 500
10460 Bromomethane 74-83-9 < 250 250 500
10460 n-Butylbenzene 104-51-8 < 250 250 500
10460 sec-Butylbenzene 135-98-8 < 250 250 500
10460 tert-Butylbenzene 98-06-6 < 250 250 500
10460 Carbon Tetrachloride 56-23-5 < 250 250 500
10460 Chlorobenzene 108-90-7 < 250 250 500
10460 Chloroethane 75-00-3 < 250 250 500
10460 Chloroform 67-66-3 < 250 250 500
10460 Chloromethane 74-87-3 < 400 400 500
10460 2-Chlorotoluene 95-49-8 < 250 250 500
10460 4-Chlorotoluene 106-43-4 < 250 250 500
10460 1,2-Dibromo-3-chloropropane 96-12-8 < 1,000 1,000 500
10460 Dibromochloromethane 124-48-1 < 250 250 500
10460 1,2-Dibromoethane 106-93-4 850 250 500
10460 Dibromomethane 74-95-3 < 250 250 500
10460 1,2-Dichlorobenzene 95-50-1 < 250 250 500
10460 1,3-Dichlorobenzene 541-73-1 < 250 250 500
10460 1,4-Dichlorobenzene 106-46-7 < 250 250 500
10460 Dichlorodifluoromethane 75-71-8 < 250 250 500
10460 1,1-Dichloroethane 75-34-3 < 250 250 500
10460 1,2-Dichloroethane 107-06-2 340 250 500
10460 1,1-Dichloroethene 75-35-4 < 250 250 500
10460 cis-1,2-Dichloroethene 156-59-2 < 250 250 500
10460 trans-1,2-Dichloroethene 156-60-5 < 250 250 500
10460 1,2-Dichloropropane 78-87-5 < 250 250 500
10460 1,3-Dichloropropane 142-28-9 < 250 250 500
10460 2,2-Dichloropropane 594-20-7 < 250 250 500
10460 1,1-Dichloropropene 563-58-6 < 250 250 500
10460 cis-1,3-Dichloropropene 10061-01-5 < 250 250 500
10460 trans-1,3-Dichloropropene 10061-02-6 < 250 250 500
10460 Ethanol 64-17-5 < 100,000 100,000 500
10460 Ethylbenzene 100-41-4 2,900 250 500
10460 Hexachlorobutadiene 87-68-3 < 250 250 500
10460 di-Isopropyl Ether 108-20-3 1,500 250 500
10460 Isopropylbenzene 98-82-8 < 250 250 500
10460 p-Isopropyltoluene 99-87-6 < 250 250 500
10460 Methyl Tertiary Butyl Ether 1634-04-4 < 250 250 500
10460 Methylene Chloride 75-09-2 < 400 400 500
10460 Naphthalene 91-20-3 890 250 500
10460 n-Propylbenzene 103-65-1 < 250 250 500
10460 Styrene 100-42-5 < 250 250 500
10460 1,1,1,2-Tetrachloroethane 630-20-6 < 250 250 500
10460 1,1,2,2-Tetrachloroethane 79-34-5 < 250 250 500
10460 Tetrachloroethene 127-18-4 < 250 250 500
Page 5 of 22

ExxonMobil c/o Arcadis
ELLE Sample #: WW 9263607
ELLE Group #: 1862891
Matrix: Groundwater
Sample Description: MW-10 Grab Groundwater
EM# 45552
1920 4 Seasons Rd - Hendersonville, NC

Project Name: 45552 - Hendersonville, NC
Collection Date/Time: 10/11/2017 16:30
Submittal Date/Time: 10/13/2017 09:30
Analysis Name CAT
No.
Dilution
Factor CAS Number Result Limit of
Quantitation
SM 6200 B-1997 ug/l ug/l GC/MS Volatiles
10460 Toluene 108-88-3 38,000 2,500 5000
10460 1,2,3-Trichlorobenzene 87-61-6 < 250 250 500
10460 1,2,4-Trichlorobenzene 120-82-1 < 250 250 500
10460 1,1,1-Trichloroethane 71-55-6 < 250 250 500
10460 1,1,2-Trichloroethane 79-00-5 < 250 250 500
10460 Trichloroethene 79-01-6 < 250 250 500
10460 Trichlorofluoromethane 75-69-4 < 250 250 500
10460 1,2,3-Trichloropropane 96-18-4 < 1,000 1,000 500
10460 1,2,4-Trimethylbenzene 95-63-6 1,800 250 500
10460 1,3,5-Trimethylbenzene 108-67-8 440 250 500
10460 Vinyl Chloride 75-01-4 < 250 250 500
10460 Xylene (Total) 1330-20-7 15,000 250 500
Sample Comments
State of North Carolina Lab Certification No. 521
All QC is compliant unless otherwise noted. Please refer to the Quality
Control Summary for overall QC performance data and associated samples.
Laboratory Sample Analysis Record
Analyst Dilution
Factor Trial# Batch# Analysis
Date and Time
CAT
No. Analysis Name Method
10460 VOCs- 25ml Water by 6200B SM 6200 B-1997 1 G172931AB 10/23/2017 15:26 Kevin A Sposito 500
10460 VOCs- 25ml Water by 6200B SM 6200 B-1997 1 G172931AB 10/23/2017 15:50 Kevin A Sposito 5000
01163 GC/MS VOA Water Prep SW-846 5030B 1 G172931AB 10/23/2017 15:26 Kevin A Sposito 500
01163 GC/MS VOA Water Prep SW-846 5030B 2 G172931AB 10/23/2017 15:50 Kevin A Sposito 5000
Page 6 of 22

ExxonMobil c/o Arcadis
ELLE Sample #: WW 9263608
ELLE Group #: 1862891
Matrix: Groundwater
Sample Description: MW-11 Grab Groundwater
EM# 45552
1920 4 Seasons Rd - Hendersonville, NC

Project Name: 45552 - Hendersonville, NC
Collection Date/Time: 10/12/2017 09:30
Submittal Date/Time: 10/13/2017 09:30
Analysis Name CAT
No.
Dilution
Factor CAS Number Result Limit of
Quantitation
SM 6200 B-1997 ug/l ug/l GC/MS Volatiles
10460 Benzene 71-43-2 19,000 2,500 5000
10460 Bromobenzene 108-86-1 < 250 250 500
10460 Bromochloromethane 74-97-5 < 250 250 500
10460 Bromodichloromethane 75-27-4 < 250 250 500
10460 Bromoform 75-25-2 < 250 250 500
10460 Bromomethane 74-83-9 < 250 250 500
10460 n-Butylbenzene 104-51-8 < 250 250 500
10460 sec-Butylbenzene 135-98-8 < 250 250 500
10460 tert-Butylbenzene 98-06-6 < 250 250 500
10460 Carbon Tetrachloride 56-23-5 < 250 250 500
10460 Chlorobenzene 108-90-7 < 250 250 500
10460 Chloroethane 75-00-3 < 250 250 500
10460 Chloroform 67-66-3 < 250 250 500
10460 Chloromethane 74-87-3 < 400 400 500
10460 2-Chlorotoluene 95-49-8 < 250 250 500
10460 4-Chlorotoluene 106-43-4 < 250 250 500
10460 1,2-Dibromo-3-chloropropane 96-12-8 < 1,000 1,000 500
10460 Dibromochloromethane 124-48-1 < 250 250 500
10460 1,2-Dibromoethane 106-93-4 810 250 500
10460 Dibromomethane 74-95-3 < 250 250 500
10460 1,2-Dichlorobenzene 95-50-1 < 250 250 500
10460 1,3-Dichlorobenzene 541-73-1 < 250 250 500
10460 1,4-Dichlorobenzene 106-46-7 < 250 250 500
10460 Dichlorodifluoromethane 75-71-8 < 250 250 500
10460 1,1-Dichloroethane 75-34-3 < 250 250 500
10460 1,2-Dichloroethane 107-06-2 600 250 500
10460 1,1-Dichloroethene 75-35-4 < 250 250 500
10460 cis-1,2-Dichloroethene 156-59-2 < 250 250 500
10460 trans-1,2-Dichloroethene 156-60-5 < 250 250 500
10460 1,2-Dichloropropane 78-87-5 < 250 250 500
10460 1,3-Dichloropropane 142-28-9 < 250 250 500
10460 2,2-Dichloropropane 594-20-7 < 250 250 500
10460 1,1-Dichloropropene 563-58-6 < 250 250 500
10460 cis-1,3-Dichloropropene 10061-01-5 < 250 250 500
10460 trans-1,3-Dichloropropene 10061-02-6 < 250 250 500
10460 Ethanol 64-17-5 < 100,000 100,000 500
10460 Ethylbenzene 100-41-4 2,200 250 500
10460 Hexachlorobutadiene 87-68-3 < 250 250 500
10460 di-Isopropyl Ether 108-20-3 2,200 250 500
10460 Isopropylbenzene 98-82-8 < 250 250 500
10460 p-Isopropyltoluene 99-87-6 < 250 250 500
10460 Methyl Tertiary Butyl Ether 1634-04-4 < 250 250 500
10460 Methylene Chloride 75-09-2 < 400 400 500
10460 Naphthalene 91-20-3 1,000 250 500
10460 n-Propylbenzene 103-65-1 < 250 250 500
10460 Styrene 100-42-5 < 250 250 500
10460 1,1,1,2-Tetrachloroethane 630-20-6 < 250 250 500
10460 1,1,2,2-Tetrachloroethane 79-34-5 < 250 250 500
10460 Tetrachloroethene 127-18-4 < 250 250 500
Page 7 of 22

ExxonMobil c/o Arcadis
ELLE Sample #: WW 9263608
ELLE Group #: 1862891
Matrix: Groundwater
Sample Description: MW-11 Grab Groundwater
EM# 45552
1920 4 Seasons Rd - Hendersonville, NC

Project Name: 45552 - Hendersonville, NC
Collection Date/Time: 10/12/2017 09:30
Submittal Date/Time: 10/13/2017 09:30
Analysis Name CAT
No.
Dilution
Factor CAS Number Result Limit of
Quantitation
SM 6200 B-1997 ug/l ug/l GC/MS Volatiles
10460 Toluene 108-88-3 27,000 2,500 5000
10460 1,2,3-Trichlorobenzene 87-61-6 < 250 250 500
10460 1,2,4-Trichlorobenzene 120-82-1 < 250 250 500
10460 1,1,1-Trichloroethane 71-55-6 < 250 250 500
10460 1,1,2-Trichloroethane 79-00-5 < 250 250 500
10460 Trichloroethene 79-01-6 < 250 250 500
10460 Trichlorofluoromethane 75-69-4 < 250 250 500
10460 1,2,3-Trichloropropane 96-18-4 < 1,000 1,000 500
10460 1,2,4-Trimethylbenzene 95-63-6 2,200 250 500
10460 1,3,5-Trimethylbenzene 108-67-8 600 250 500
10460 Vinyl Chloride 75-01-4 < 250 250 500
10460 Xylene (Total) 1330-20-7 14,000 250 500
Sample Comments
State of North Carolina Lab Certification No. 521
All QC is compliant unless otherwise noted. Please refer to the Quality
Control Summary for overall QC performance data and associated samples.
Laboratory Sample Analysis Record
Analyst Dilution
Factor Trial# Batch# Analysis
Date and Time
CAT
No. Analysis Name Method
10460 VOCs- 25ml Water by 6200B SM 6200 B-1997 1 G172931AB 10/23/2017 16:14 Kevin A Sposito 500
10460 VOCs- 25ml Water by 6200B SM 6200 B-1997 1 G172931AB 10/23/2017 16:38 Kevin A Sposito 5000
01163 GC/MS VOA Water Prep SW-846 5030B 1 G172931AB 10/23/2017 16:14 Kevin A Sposito 500
01163 GC/MS VOA Water Prep SW-846 5030B 2 G172931AB 10/23/2017 16:38 Kevin A Sposito 5000
Page 8 of 22

ExxonMobil c/o Arcadis
ELLE Sample #: WW 9263609
ELLE Group #: 1862891
Matrix: Groundwater
Sample Description: INJ-2 Grab Groundwater
EM# 45552
1920 4 Seasons Rd - Hendersonville, NC

Project Name: 45552 - Hendersonville, NC
Collection Date/Time: 10/11/2017 16:45
Submittal Date/Time: 10/13/2017 09:30
Analysis Name CAT
No.
Dilution
Factor CAS Number Result Limit of
Quantitation
SM 6200 B-1997 ug/l ug/l GC/MS Volatiles
10460 Benzene 71-43-2 17,000 2,500 5000
10460 Bromobenzene 108-86-1 < 250 250 500
10460 Bromochloromethane 74-97-5 < 250 250 500
10460 Bromodichloromethane 75-27-4 < 250 250 500
10460 Bromoform 75-25-2 < 250 250 500
10460 Bromomethane 74-83-9 < 250 250 500
10460 n-Butylbenzene 104-51-8 < 250 250 500
10460 sec-Butylbenzene 135-98-8 < 250 250 500
10460 tert-Butylbenzene 98-06-6 < 250 250 500
10460 Carbon Tetrachloride 56-23-5 < 250 250 500
10460 Chlorobenzene 108-90-7 < 250 250 500
10460 Chloroethane 75-00-3 < 250 250 500
10460 Chloroform 67-66-3 < 250 250 500
10460 Chloromethane 74-87-3 < 400 400 500
10460 2-Chlorotoluene 95-49-8 < 250 250 500
10460 4-Chlorotoluene 106-43-4 < 250 250 500
10460 1,2-Dibromo-3-chloropropane 96-12-8 < 1,000 1,000 500
10460 Dibromochloromethane 124-48-1 < 250 250 500
10460 1,2-Dibromoethane 106-93-4 910 250 500
10460 Dibromomethane 74-95-3 < 250 250 500
10460 1,2-Dichlorobenzene 95-50-1 < 250 250 500
10460 1,3-Dichlorobenzene 541-73-1 < 250 250 500
10460 1,4-Dichlorobenzene 106-46-7 < 250 250 500
10460 Dichlorodifluoromethane 75-71-8 < 250 250 500
10460 1,1-Dichloroethane 75-34-3 < 250 250 500
10460 1,2-Dichloroethane 107-06-2 510 250 500
10460 1,1-Dichloroethene 75-35-4 < 250 250 500
10460 cis-1,2-Dichloroethene 156-59-2 < 250 250 500
10460 trans-1,2-Dichloroethene 156-60-5 < 250 250 500
10460 1,2-Dichloropropane 78-87-5 < 250 250 500
10460 1,3-Dichloropropane 142-28-9 < 250 250 500
10460 2,2-Dichloropropane 594-20-7 < 250 250 500
10460 1,1-Dichloropropene 563-58-6 < 250 250 500
10460 cis-1,3-Dichloropropene 10061-01-5 < 250 250 500
10460 trans-1,3-Dichloropropene 10061-02-6 < 250 250 500
10460 Ethanol 64-17-5 < 100,000 100,000 500
10460 Ethylbenzene 100-41-4 2,700 250 500
10460 Hexachlorobutadiene 87-68-3 < 250 250 500
10460 di-Isopropyl Ether 108-20-3 1,900 250 500
10460 Isopropylbenzene 98-82-8 < 250 250 500
10460 p-Isopropyltoluene 99-87-6 < 250 250 500
10460 Methyl Tertiary Butyl Ether 1634-04-4 < 250 250 500
10460 Methylene Chloride 75-09-2 < 400 400 500
10460 Naphthalene 91-20-3 960 250 500
10460 n-Propylbenzene 103-65-1 < 250 250 500
10460 Styrene 100-42-5 < 250 250 500
10460 1,1,1,2-Tetrachloroethane 630-20-6 < 250 250 500
10460 1,1,2,2-Tetrachloroethane 79-34-5 < 250 250 500
10460 Tetrachloroethene 127-18-4 < 250 250 500
Page 9 of 22

ExxonMobil c/o Arcadis
ELLE Sample #: WW 9263609
ELLE Group #: 1862891
Matrix: Groundwater
Sample Description: INJ-2 Grab Groundwater
EM# 45552
1920 4 Seasons Rd - Hendersonville, NC

Project Name: 45552 - Hendersonville, NC
Collection Date/Time: 10/11/2017 16:45
Submittal Date/Time: 10/13/2017 09:30
Analysis Name CAT
No.
Dilution
Factor CAS Number Result Limit of
Quantitation
SM 6200 B-1997 ug/l ug/l GC/MS Volatiles
10460 Toluene 108-88-3 35,000 2,500 5000
10460 1,2,3-Trichlorobenzene 87-61-6 < 250 250 500
10460 1,2,4-Trichlorobenzene 120-82-1 < 250 250 500
10460 1,1,1-Trichloroethane 71-55-6 < 250 250 500
10460 1,1,2-Trichloroethane 79-00-5 < 250 250 500
10460 Trichloroethene 79-01-6 < 250 250 500
10460 Trichlorofluoromethane 75-69-4 < 250 250 500
10460 1,2,3-Trichloropropane 96-18-4 < 1,000 1,000 500
10460 1,2,4-Trimethylbenzene 95-63-6 1,900 250 500
10460 1,3,5-Trimethylbenzene 108-67-8 470 250 500
10460 Vinyl Chloride 75-01-4 < 250 250 500
10460 Xylene (Total) 1330-20-7 15,000 250 500
Sample Comments
State of North Carolina Lab Certification No. 521
All QC is compliant unless otherwise noted. Please refer to the Quality
Control Summary for overall QC performance data and associated samples.
Laboratory Sample Analysis Record
Analyst Dilution
Factor Trial# Batch# Analysis
Date and Time
CAT
No. Analysis Name Method
10460 VOCs- 25ml Water by 6200B SM 6200 B-1997 1 G172931AB 10/23/2017 17:03 Kevin A Sposito 500
10460 VOCs- 25ml Water by 6200B SM 6200 B-1997 1 G172931AB 10/23/2017 17:27 Kevin A Sposito 5000
01163 GC/MS VOA Water Prep SW-846 5030B 1 G172931AB 10/23/2017 17:03 Kevin A Sposito 500
01163 GC/MS VOA Water Prep SW-846 5030B 2 G172931AB 10/23/2017 17:27 Kevin A Sposito 5000
Page 10 of 22

ExxonMobil c/o Arcadis
ELLE Sample #: WW 9263610
ELLE Group #: 1862891
Matrix: Water
Sample Description: TRIP BLANK Water
EM# 45552
1920 4 Seasons Rd - Hendersonville, NC

Project Name: 45552 - Hendersonville, NC
Collection Date/Time: 10/11/2017
Submittal Date/Time: 10/13/2017 09:30
Analysis Name CAT
No.
Dilution
Factor CAS Number Result Limit of
Quantitation
SM 6200 B-1997 ug/l ug/l GC/MS Volatiles
10460 Benzene 71-43-2 < 0.5 0.5 1
10460 Bromobenzene 108-86-1 < 0.5 0.5 1
10460 Bromochloromethane 74-97-5 < 0.5 0.5 1
10460 Bromodichloromethane 75-27-4 < 0.5 0.5 1
10460 Bromoform 75-25-2 < 0.5 0.5 1
10460 Bromomethane 74-83-9 < 0.5 0.5 1
10460 n-Butylbenzene 104-51-8 < 0.5 0.5 1
10460 sec-Butylbenzene 135-98-8 < 0.5 0.5 1
10460 tert-Butylbenzene 98-06-6 < 0.5 0.5 1
10460 Carbon Tetrachloride 56-23-5 < 0.5 0.5 1
10460 Chlorobenzene 108-90-7 < 0.5 0.5 1
10460 Chloroethane 75-00-3 < 0.5 0.5 1
10460 Chloroform 67-66-3 < 0.5 0.5 1
10460 Chloromethane 74-87-3 < 0.8 0.8 1
10460 2-Chlorotoluene 95-49-8 < 0.5 0.5 1
10460 4-Chlorotoluene 106-43-4 < 0.5 0.5 1
10460 1,2-Dibromo-3-chloropropane 96-12-8 < 2.0 2.0 1
10460 Dibromochloromethane 124-48-1 < 0.5 0.5 1
10460 1,2-Dibromoethane 106-93-4 < 0.5 0.5 1
10460 Dibromomethane 74-95-3 < 0.5 0.5 1
10460 1,2-Dichlorobenzene 95-50-1 < 0.5 0.5 1
10460 1,3-Dichlorobenzene 541-73-1 < 0.5 0.5 1
10460 1,4-Dichlorobenzene 106-46-7 < 0.5 0.5 1
10460 Dichlorodifluoromethane 75-71-8 < 0.5 0.5 1
10460 1,1-Dichloroethane 75-34-3 < 0.5 0.5 1
10460 1,2-Dichloroethane 107-06-2 < 0.5 0.5 1
10460 1,1-Dichloroethene 75-35-4 < 0.5 0.5 1
10460 cis-1,2-Dichloroethene 156-59-2 < 0.5 0.5 1
10460 trans-1,2-Dichloroethene 156-60-5 < 0.5 0.5 1
10460 1,2-Dichloropropane 78-87-5 < 0.5 0.5 1
10460 1,3-Dichloropropane 142-28-9 < 0.5 0.5 1
10460 2,2-Dichloropropane 594-20-7 < 0.5 0.5 1
10460 1,1-Dichloropropene 563-58-6 < 0.5 0.5 1
10460 cis-1,3-Dichloropropene 10061-01-5 < 0.5 0.5 1
10460 trans-1,3-Dichloropropene 10061-02-6 < 0.5 0.5 1
10460 Ethanol 64-17-5 < 200 200 1
10460 Ethylbenzene 100-41-4 < 0.5 0.5 1
10460 Hexachlorobutadiene 87-68-3 < 0.5 0.5 1
10460 di-Isopropyl Ether 108-20-3 < 0.5 0.5 1
10460 Isopropylbenzene 98-82-8 < 0.5 0.5 1
10460 p-Isopropyltoluene 99-87-6 < 0.5 0.5 1
10460 Methyl Tertiary Butyl Ether 1634-04-4 < 0.5 0.5 1
10460 Methylene Chloride 75-09-2 < 0.8 0.8 1
10460 Naphthalene 91-20-3 < 0.5 0.5 1
10460 n-Propylbenzene 103-65-1 < 0.5 0.5 1
10460 Styrene 100-42-5 < 0.5 0.5 1
10460 1,1,1,2-Tetrachloroethane 630-20-6 < 0.5 0.5 1
10460 1,1,2,2-Tetrachloroethane 79-34-5 < 0.5 0.5 1
10460 Tetrachloroethene 127-18-4 < 0.5 0.5 1
Page 11 of 22

ExxonMobil c/o Arcadis
ELLE Sample #: WW 9263610
ELLE Group #: 1862891
Matrix: Water
Sample Description: TRIP BLANK Water
EM# 45552
1920 4 Seasons Rd - Hendersonville, NC

Project Name: 45552 - Hendersonville, NC
Collection Date/Time: 10/11/2017
Submittal Date/Time: 10/13/2017 09:30
Analysis Name CAT
No.
Dilution
Factor CAS Number Result Limit of
Quantitation
SM 6200 B-1997 ug/l ug/l GC/MS Volatiles
10460 Toluene 108-88-3 < 0.5 0.5 1
10460 1,2,3-Trichlorobenzene 87-61-6 < 0.5 0.5 1
10460 1,2,4-Trichlorobenzene 120-82-1 < 0.5 0.5 1
10460 1,1,1-Trichloroethane 71-55-6 < 0.5 0.5 1
10460 1,1,2-Trichloroethane 79-00-5 < 0.5 0.5 1
10460 Trichloroethene 79-01-6 < 0.5 0.5 1
10460 Trichlorofluoromethane 75-69-4 < 0.5 0.5 1
10460 1,2,3-Trichloropropane 96-18-4 < 2.0 2.0 1
10460 1,2,4-Trimethylbenzene 95-63-6 < 0.5 0.5 1
10460 1,3,5-Trimethylbenzene 108-67-8 < 0.5 0.5 1
10460 Vinyl Chloride 75-01-4 < 0.5 0.5 1
10460 Xylene (Total) 1330-20-7 < 0.5 0.5 1
Sample Comments
State of North Carolina Lab Certification No. 521
All QC is compliant unless otherwise noted. Please refer to the Quality
Control Summary for overall QC performance data and associated samples.
Laboratory Sample Analysis Record
Analyst Dilution
Factor Trial# Batch# Analysis
Date and Time
CAT
No. Analysis Name Method
10460 VOCs- 25ml Water by 6200B SM 6200 B-1997 1 G172931AB 10/23/2017 13:25 Kevin A Sposito 1
01163 GC/MS VOA Water Prep SW-846 5030B 1 G172931AB 10/23/2017 13:25 Kevin A Sposito 1
Page 12 of 22

Quality Control Summary
Group Number: 1862891 Client Name: ExxonMobil c/o Arcadis
Reported: 10/24/2017 20:45
Matrix QC may not be reported if insufficient sample or site-specific QC samples were not submitted. In these situations, to demonstrate precision and accuracy at a batch level, a LCS/LCSD was performed, unless otherwise specified in the method.

All Inorganic Initial Calibration and Continuing Calibration Blanks met acceptable method criteria unless otherwise noted on the Analysis Report.
Method Blank
Analysis Name Result LOQ
ug/l ug/l
Batch number: G172931AB Sample number(s): 9263606-9263610
0.5 < 0.5 Benzene
0.5 < 0.5 Bromobenzene
0.5 < 0.5 Bromochloromethane
0.5 < 0.5 Bromodichloromethane
0.5 < 0.5 Bromoform
0.5 < 0.5 Bromomethane
0.5 < 0.5 n-Butylbenzene
0.5 < 0.5 sec-Butylbenzene
0.5 < 0.5 tert-Butylbenzene
0.5 < 0.5 Carbon Tetrachloride
0.5 < 0.5 Chlorobenzene
0.5 < 0.5 Chloroethane
0.5 < 0.5 Chloroform
0.8 < 0.8 Chloromethane
0.5 < 0.5 2-Chlorotoluene
0.5 < 0.5 4-Chlorotoluene
2.0 < 2.0 1,2-Dibromo-3-chloropropane
0.5 < 0.5 Dibromochloromethane
0.5 < 0.5 1,2-Dibromoethane
0.5 < 0.5 Dibromomethane
0.5 < 0.5 1,2-Dichlorobenzene
0.5 < 0.5 1,3-Dichlorobenzene
0.5 < 0.5 1,4-Dichlorobenzene
0.5 < 0.5 Dichlorodifluoromethane
0.5 < 0.5 1,1-Dichloroethane
0.5 < 0.5 1,2-Dichloroethane
0.5 < 0.5 1,1-Dichloroethene
0.5 < 0.5 cis-1,2-Dichloroethene
0.5 < 0.5 trans-1,2-Dichloroethene
0.5 < 0.5 1,2-Dichloropropane
0.5 < 0.5 1,3-Dichloropropane
0.5 < 0.5 2,2-Dichloropropane
0.5 < 0.5 1,1-Dichloropropene
0.5 < 0.5 cis-1,3-Dichloropropene
0.5 < 0.5 trans-1,3-Dichloropropene
200 < 200 Ethanol
0.5 < 0.5 Ethylbenzene
0.5 < 0.5 Hexachlorobutadiene
0.5 < 0.5 di-Isopropyl Ether
*- Outside of specification
(1) The result for one or both determinations was less than five times the LOQ.
(2) The unspiked result was more than four times the spike added.
P###### is indicative of a Background or Unspiked sample that is batch matrix QC and was not performed using a sample from this submission
group.
Page 13 of 22

Quality Control Summary
Group Number: 1862891 Client Name: ExxonMobil c/o Arcadis
Reported: 10/24/2017 20:45
Method Blank (continued)
Analysis Name Result LOQ
ug/l ug/l
0.5 < 0.5 Isopropylbenzene
0.5 < 0.5 p-Isopropyltoluene
0.5 < 0.5 Methyl Tertiary Butyl Ether
0.8 < 0.8 Methylene Chloride
0.5 < 0.5 Naphthalene
0.5 < 0.5 n-Propylbenzene
0.5 < 0.5 Styrene
0.5 < 0.5 1,1,1,2-Tetrachloroethane
0.5 < 0.5 1,1,2,2-Tetrachloroethane
0.5 < 0.5 Tetrachloroethene
0.5 < 0.5 Toluene
0.5 < 0.5 1,2,3-Trichlorobenzene
0.5 < 0.5 1,2,4-Trichlorobenzene
0.5 < 0.5 1,1,1-Trichloroethane
0.5 < 0.5 1,1,2-Trichloroethane
0.5 < 0.5 Trichloroethene
0.5 < 0.5 Trichlorofluoromethane
2.0 < 2.0 1,2,3-Trichloropropane
0.5 < 0.5 1,2,4-Trimethylbenzene
0.5 < 0.5 1,3,5-Trimethylbenzene
0.5 < 0.5 Vinyl Chloride
0.5 < 0.5 Xylene (Total)
LCS/LCSD
RPD
Max
LCS/LCSD
Limits
LCSD
%REC
LCS
%REC
LCSD
Conc
LCSD Spike
Added
LCS
Conc
LCS Spike
Added
RPD Analysis Name
ug/l ug/l ug/l ug/l
Batch number: G172931AB Sample number(s): 9263606-9263610
70-130 98 9.80 10 Benzene
70-130 103 10.27 10 Bromobenzene
70-130 106 10.56 10 Bromochloromethane
70-130 114 11.35 10 Bromodichloromethane
70-130 113 11.28 10 Bromoform
70-130 85 8.54 10 Bromomethane
70-130 97 9.68 10 n-Butylbenzene
70-130 98 9.78 10 sec-Butylbenzene
70-130 100 9.97 10 tert-Butylbenzene
70-130 130 12.96 10 Carbon Tetrachloride
70-130 97 9.73 10 Chlorobenzene
70-130 84 8.43 10 Chloroethane
70-130 101 10.07 10 Chloroform
*- Outside of specification
(1) The result for one or both determinations was less than five times the LOQ.
(2) The unspiked result was more than four times the spike added.
P###### is indicative of a Background or Unspiked sample that is batch matrix QC and was not performed using a sample from this submission
group.
Page 14 of 22

Quality Control Summary
Group Number: 1862891 Client Name: ExxonMobil c/o Arcadis
Reported: 10/24/2017 20:45
LCS/LCSD (continued)
RPD
Max
LCS/LCSD
Limits
LCSD
%REC
LCS
%REC
LCSD
Conc
LCSD Spike
Added
LCS
Conc
LCS Spike
Added
RPD Analysis Name
ug/l ug/l ug/l ug/l
70-130 76 7.55 10 Chloromethane
70-130 99 9.91 10 2-Chlorotoluene
70-130 100 10.02 10 4-Chlorotoluene
70-130 111 11.11 10 1,2-Dibromo-3-chloropropane
70-130 125 12.52 10 Dibromochloromethane
70-130 114 11.39 10 1,2-Dibromoethane
70-130 98 9.80 10 Dibromomethane
70-130 101 10.12 10 1,2-Dichlorobenzene
70-130 99 9.93 10 1,3-Dichlorobenzene
70-130 100 9.96 10 1,4-Dichlorobenzene
70-130 71 7.12 10 Dichlorodifluoromethane
70-130 88 8.84 10 1,1-Dichloroethane
70-130 98 9.82 10 1,2-Dichloroethane
70-130 99 9.93 10 1,1-Dichloroethene
70-130 99 9.89 10 cis-1,2-Dichloroethene
70-130 94 9.38 10 trans-1,2-Dichloroethene
70-130 96 9.59 10 1,2-Dichloropropane
70-130 97 9.74 10 1,3-Dichloropropane
70-130 114 11.41 10 2,2-Dichloropropane
70-130 98 9.82 10 1,1-Dichloropropene
70-130 115 11.51 10 cis-1,3-Dichloropropene
70-130 134* 13.43 10 trans-1,3-Dichloropropene
70-130 89 889.38 1000 Ethanol
70-130 97 9.72 10 Ethylbenzene
70-130 105 10.49 10 Hexachlorobutadiene
70-130 85 8.54 10 di-Isopropyl Ether
70-130 100 9.95 10 Isopropylbenzene
70-130 99 9.88 10 p-Isopropyltoluene
70-130 88 8.81 10 Methyl Tertiary Butyl Ether
70-130 90 8.97 10 Methylene Chloride
70-130 101 10.05 10 Naphthalene
70-130 97 9.66 10 n-Propylbenzene
70-130 101 10.05 10 Styrene
70-130 108 10.84 10 1,1,1,2-Tetrachloroethane
70-130 103 10.3 10 1,1,2,2-Tetrachloroethane
70-130 105 10.5 10 Tetrachloroethene
70-130 98 9.78 10 Toluene
70-130 101 10.12 10 1,2,3-Trichlorobenzene
70-130 104 10.36 10 1,2,4-Trichlorobenzene
70-130 116 11.61 10 1,1,1-Trichloroethane
70-130 100 10 10 1,1,2-Trichloroethane
70-130 102 10.17 10 Trichloroethene
70-130 91 9.09 10 Trichlorofluoromethane
70-130 104 10.43 10 1,2,3-Trichloropropane
*- Outside of specification
(1) The result for one or both determinations was less than five times the LOQ.
(2) The unspiked result was more than four times the spike added.
P###### is indicative of a Background or Unspiked sample that is batch matrix QC and was not performed using a sample from this submission
group.
Page 15 of 22

Quality Control Summary
Group Number: 1862891 Client Name: ExxonMobil c/o Arcadis
Reported: 10/24/2017 20:45
LCS/LCSD (continued)
RPD
Max
LCS/LCSD
Limits
LCSD
%REC
LCS
%REC
LCSD
Conc
LCSD Spike
Added
LCS
Conc
LCS Spike
Added
RPD Analysis Name
ug/l ug/l ug/l ug/l
70-130 98 9.78 10 1,2,4-Trimethylbenzene
70-130 98 9.80 10 1,3,5-Trimethylbenzene
70-130 82 8.18 10 Vinyl Chloride
70-130 99 29.56 30 Xylene (Total)
MS/MSD
Unspiked (UNSPK) = the sample used in conjunction with the matrix spike
Analysis Name Unspiked
Conc
MS Spike
Added
MS
Conc
MSD Spike
Added
MSD
Conc
MS
%Rec
MSD
%Rec
MS/MSD
Limits
RPD RPD
Max
ug/l ug/l ug/l ug/l ug/l
Batch number: G172931AB Sample number(s): 9263606-9263610 UNSPK: P258466
100 99.84 100 < 10 Benzene 102.86 103 70-130 3 30 100
100 98.48 100 < 10 Bromobenzene 102.52 103 70-130 4 30 98
100 101.02 100 < 10 Bromochloromethane 105.04 105 70-130 4 30 101
100 97.92 100 < 10 Bromodichloromethane 101.91 102 70-130 4 30 98
100 85.73 100 < 10 Bromoform 89.58 90 70-130 4 30 86
100 86.96 100 < 10 Bromomethane 86.08 86 70-130 1 30 87
100 99.37 100 < 10 n-Butylbenzene 102.45 102 70-130 3 30 99
100 101.54 100 < 10 sec-Butylbenzene 103.8 104 70-130 2 30 102
100 98.39 100 < 10 tert-Butylbenzene 99.76 100 70-130 1 30 98
100 123.55 100 < 10 Carbon Tetrachloride 129.9 130 70-130 5 30 124
100 96.64 100 < 10 Chlorobenzene 98.5 99 70-130 2 30 97
100 82.41 100 < 10 Chloroethane 85.24 85 70-130 3 30 82
100 99.79 100 < 10 Chloroform 101.69 102 70-130 2 30 100
100 75.5 100 < 16 Chloromethane 76.48 76 70-130 1 30 76
100 100.52 100 < 10 2-Chlorotoluene 101.3 101 70-130 1 30 101
100 98.33 100 < 10 4-Chlorotoluene 101.68 102 70-130 3 30 98
100 94.13 100 < 40 1,2-Dibromo-3-chloropropane 96.37 96 70-130 2 30 94
100 96.65 100 < 10 Dibromochloromethane 103.2 103 70-130 7 30 97
100 103.49 100 < 10 1,2-Dibromoethane 108.6 109 70-130 5 30 103
100 94.36 100 < 10 Dibromomethane 96.32 96 70-130 2 30 94
100 100.07 100 < 10 1,2-Dichlorobenzene 100.72 101 70-130 1 30 100
100 98.03 100 < 10 1,3-Dichlorobenzene 98.7 99 70-130 1 30 98
100 100.05 100 < 10 1,4-Dichlorobenzene 101.09 101 70-130 1 30 100
100 68.23 100 < 10 Dichlorodifluoromethane 69.57 70 70-130 2 30 68*
100 90.7 100 < 10 1,1-Dichloroethane 91.75 92 70-130 1 30 91
100 107.57 100 13.94 1,2-Dichloroethane 110.18 96 70-130 2 30 94
100 111.04 100 < 10 1,1-Dichloroethene 111.74 112 70-130 1 30 111
100 102.62 100 < 10 cis-1,2-Dichloroethene 104.75 105 70-130 2 30 103
100 103.04 100 < 10 trans-1,2-Dichloroethene 104.08 104 70-130 1 30 103
*- Outside of specification
(1) The result for one or both determinations was less than five times the LOQ.
(2) The unspiked result was more than four times the spike added.
P###### is indicative of a Background or Unspiked sample that is batch matrix QC and was not performed using a sample from this submission
group.
Page 16 of 22

Quality Control Summary
Group Number: 1862891 Client Name: ExxonMobil c/o Arcadis
Reported: 10/24/2017 20:45
MS/MSD (continued)
Unspiked (UNSPK) = the sample used in conjunction with the matrix spike
Analysis Name Unspiked
Conc
MS Spike
Added
MS
Conc
MSD Spike
Added
MSD
Conc
MS
%Rec
MSD
%Rec
MS/MSD
Limits RPD RPD
Max
ug/l ug/l ug/l ug/l ug/l
100 93.96 100 < 10 1,2-Dichloropropane 97.32 97 70-130 4 30 94
100 94.34 100 < 10 1,3-Dichloropropane 95.44 95 70-130 1 30 94
100 113.11 100 < 10 2,2-Dichloropropane 116.83 117 70-130 3 30 113
100 99.45 100 < 10 1,1-Dichloropropene 101.51 102 70-130 2 30 99
100 92.73 100 < 10 cis-1,3-Dichloropropene 97.57 98 70-130 5 30 93
100 106.8 100 < 10 trans-1,3-Dichloropropene 108.74 109 70-130 2 30 107
10000 6635.21 10000 < 4,000 Ethanol 6271.99 63* 70-130 6 30 66*
100 99.23 100 < 10 Ethylbenzene 101.45 101 70-130 2 30 99
100 107.06 100 < 10 Hexachlorobutadiene 108.67 109 70-130 1 30 107
100 505.97 100 424.81 di-Isopropyl Ether 509.8 85 (2) 70-130 1 30 81 (2)
100 100.34 100 < 10 Isopropylbenzene 103.5 103 70-130 3 30 100
100 101.1 100 < 10 p-Isopropyltoluene 102.84 103 70-130 2 30 101
100 1081.08 100 1016.7 Methyl Tertiary Butyl Ether 1096.37 80 (2) 70-130 1 30 64 (2)
100 97.55 100 < 16 Methylene Chloride 100.51 101 70-130 3 30 98
100 95.4 100 < 10 Naphthalene 97.93 98 70-130 3 30 95
100 100.29 100 < 10 n-Propylbenzene 102.48 102 70-130 2 30 100
100 98.57 100 < 10 Styrene 100.74 101 70-130 2 30 99
100 102.14 100 < 10 1,1,1,2-Tetrachloroethane 106.06 106 70-130 4 30 102
100 95.33 100 < 10 1,1,2,2-Tetrachloroethane 96.47 96 70-130 1 30 95
100 106.21 100 < 10 Tetrachloroethene 108.22 108 70-130 2 30 106
100 99.94 100 < 10 Toluene 101.38 101 70-130 1 30 100
100 100.61 100 < 10 1,2,3-Trichlorobenzene 101.43 101 70-130 1 30 101
100 100.99 100 < 10 1,2,4-Trichlorobenzene 102.42 102 70-130 1 30 101
100 114.19 100 < 10 1,1,1-Trichloroethane 117.26 117 70-130 3 30 114
100 104.06 100 < 10 1,1,2-Trichloroethane 106.56 107 70-130 2 30 104
100 101.81 100 < 10 Trichloroethene 103.59 104 70-130 2 30 102
100 91.89 100 < 10 Trichlorofluoromethane 89.58 90 70-130 3 30 92
100 99.13 100 < 40 1,2,3-Trichloropropane 103.29 103 70-130 4 30 99
100 98.43 100 < 10 1,2,4-Trimethylbenzene 101.32 101 70-130 3 30 98
100 99.82 100 < 10 1,3,5-Trimethylbenzene 101.74 102 70-130 2 30 100
100 81.15 100 < 10 Vinyl Chloride 81.13 81 70-130 0 30 81
300 295.62 300 < 10 Xylene (Total) 300.62 100 70-130 2 30 99
*- Outside of specification
(1) The result for one or both determinations was less than five times the LOQ.
(2) The unspiked result was more than four times the spike added.
P###### is indicative of a Background or Unspiked sample that is batch matrix QC and was not performed using a sample from this submission
group.
Page 17 of 22

Quality Control Summary
Group Number: 1862891 Client Name: ExxonMobil c/o Arcadis
Reported: 10/24/2017 20:45
Surrogate recoveries which are outside of the QC window are confirmed unless
attributed to dilution or otherwise noted on the Analysis Report. For dual
column analyses, the surrogate (at least one surrogate for multi-surrogate tests) must be within the acceptance limits on at least one of the two
columns.
Surrogate Quality Control
Analysis Name: VOCs- 25ml Water by 6200B Batch number: G172931AB
Dibromofluoromethane 1,2-Dichloroethane-d4 Toluene-d8 4-Bromofluorobenzene
9263606 100 106 96 99
9263607 99 103 97 98
9263608 100 105 97 98
9263609 98 104 96 98
9263610 102 101 98 97
Blank 101 100 97 95
LCS 101 100 98 97
MS 98 101 99 98
MSD 97 100 98 98
Dibromofluoromethane 1,2-Dichloroethane-d4 Toluene-d8 4-Bromofluorobenzene
Limits: 70-130 70-130 70-130 70-130
*- Outside of specification
(1) The result for one or both determinations was less than five times the LOQ.
(2) The unspiked result was more than four times the spike added.
P###### is indicative of a Background or Unspiked sample that is batch matrix QC and was not performed using a sample from this submission
group.
Page 18 of 22
Page 19 of 22
EXXONMOBILClient:
Sample Administration
Receipt Documentation Log
Doc Log ID:197449
Group Number(s):
*197449*
1862891
Delivery Method:
Number of Packages:
Delivery and Receipt Information
1
Fed Ex Arrival Timestamp:
Number of Projects:
10/13/2017 9:30
1
Arrival Condition Summary
Shipping Container Sealed:Yes
Custody Seal Present:Yes
Custody Seal Intact:Yes
Samples Chilled:Yes
Paperwork Enclosed:Yes
Samples Intact:Yes
Missing Samples:No
Extra Samples:No
Discrepancy in Container Qty on COC:No
Sample IDs on COC match Containers:Yes
Sample Date/Times match COC:Yes
VOA Vial Headspace ≥ 6mm:No
Total Trip Blank Qty:2
Trip Blank Type:HCL
Air Quality Samples Present:No
Unpacked by Nicole Reiff (25684) at 12:31 on 10/13/2017
Samples Chilled Details
Thermometer Types: DT = Digital (Temp. Bottle) IR = Infrared (Surface Temp) All Temperatures in °C.
Cooler #Elevated Temp?Ice ContainerIce Present?Ice TypeTherm. TypeCorrected TempThermometer ID
1 DT146 1.2 DT Wet Y Bagged N
Page 1 of 1
Page 20 of 22
Explanation of Symbols and Abbreviations

3768 0717
The following defines common symbols and abbreviations used in reporting technical data:
BMQL Below Minimum Quantitation Level
C degrees Celsius
cfu colony forming units
CP Units cobalt-chloroplatinate units
F degrees Fahrenheit
g gram(s)
IU International Units
kg kilogram(s)
L liter(s)
lb. pound(s)
m3 cubic meter(s)
meq milliequivalents
mg milligram(s)
mL milliliter(s)
MPN Most Probable Number
N.D. non-detect
ng nanogram(s)
NTU nephelometric turbidity units
pg/L picogram/liter
RL Reporting Limit
TNTC Too Numerous To Count
µg microgram(s)
µL microliter(s)
umhos/cm micromhos/cm
< less than
> greater than
ppm parts per million - One ppm is equivalent to one milligram per kilogram (mg/kg) or one gram per million grams. For
aqueous liquids, ppm is usually taken to be equivalent to milligrams per liter (mg/l), because one liter of water has a weight
very close to a kilogram. For gases or vapors, one ppm is equivalent to one microliter per liter of gas.
ppb parts per billion
Dry weight Results printed under this heading have been adjusted for moisture content. This increases the analyte weight
basis concentration to approximate the value present in a similar sample without moisture. All other results are reported on an
as-received basis.

Analytical test results meet all requirements of the associated regulatory program (i.e., NELAC (TNI), DoD, and ISO 17025) unless
otherwise noted under the individual analysis.
Measurement uncertainty values, as applicable, are available upon request.
Tests results relate only to the sample tested. Clients should be aware that a critical step in a chemical or microbiological analysis is the
collection of the sample. Unless the sample analyzed is truly representative of the bulk of material involved, the test results will be
meaningless. If you have questions regarding the proper techniques of collecting samples, please contact us. We cannot be held
responsible for sample integrity, however, unless sampling has been performed by a member of our staff.
This report shall not be reproduced except in full, without the written approval of the laboratory.
Times are local to the area of activity. Parameters listed in the 40 CFR Part 136 Table II as “analyze immediately” are not performed within
15 minutes.

WARRANTY AND LIMITS OF LIABILITY - In accepting analytical work, we warrant the accuracy of test results for the sample as submitted.
THE FOREGOING EXPRESS WARRANTY IS EXCLUSIVE AND IS GIVEN IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR
IMPLIED. WE DISCLAIM ANY OTHER WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING A WARRANTY OF FITNESS FOR
PARTICULAR PURPOSE AND WARRANTY OF MERCHANTABILITY. IN NO EVENT SHALL EUROFINS LANCASTER LABORATORIES
ENVIRONMENTAL, LLC BE LIABLE FOR INDIRECT, SPECIAL, CONSEQUENTIAL, OR INCIDENTAL DAMAGES INCLUDING, BUT NOT
LIMITED TO, DAMAGES FOR LOSS OF PROFIT OR GOODWILL REGARDLESS OF (A) THE NEGLIGENCE (EITHER SOLE OR
CONCURRENT) OF EUROFINS LANCASTER LABORATORIES ENVIRONMENTAL AND (B) WHETHER EUROFINS LANCASTER
LABORATORIES ENVIRONMENTAL HAS BEEN INFORMED OF THE POSSIBILITY OF SUCH DAMAGES. We accept no legal
responsibility for the purposes for which the client uses the test results. No purchase order or other order for work shall be accepted by
Eurofins Lancaster Laboratories Environmental which includes any conditions that vary from the Standard Terms and Conditions, and
Eurofins Lancaster Laboratories Environmental hereby objects to any conflicting terms contained in any acceptance or order submitted by
client.
Page 21 of 22
Data Qualifiers
Qualifier Definition
C Result confirmed by reanalysis
D1 Indicates for dual column analyses that the result is reported from column 1
D2 Indicates for dual column analyses that the result is reported from column 2
E Concentration exceeds the calibration range
J (or G, I, X)Estimated value >= the Method Detection Limit (MDL or DL) and < the Limit of Quantitation (LOQ or RL)
P Concentration difference between the primary and confirmation column >40%. The lower result is reported.
U Analyte was not detected at the value indicated
V Concentration difference between the primary and confirmation column >100%. The reporting limit is raised
due to this disparity and evident interference.
W The dissolved oxygen uptake for the unseeded blank is greater than 0.20 mg/L.
Z Laboratory Defined - see analysis report
Additional Organic and Inorganic CLP qualifiers may be used with Form 1 reports as defined by the CLP methods.
Qualifiers specific to Dioxin/Furans and PCB Congeners are detailed on the individual Analysis Report.
Page 22 of 22

Arcadis G&M of North Carolina, Inc.
801 Corporate Center Drive
Raleigh
North Carolina 27607
Tel [phone]
Fax [phone]

www.arcadis.com