WS-9069_44302_CA_MRP_20161005

Transmittal Letter
Incident Manager: Linda Estkowski
Incident Name: Pagetown Exxon
Incident Number: 44302
Facility ID: 0-004296
Document: Pre-CAP Monitoring Report
Document Date: 10/5/16

Jeff Ballsieper
Progress Environmental, Inc.
P.O. Box 5884
Winston-Salem, North Carolina 27113
Phone [phone]
Fax [phone]

TABLE OF CONTENTS

A. SITE IDENTIFICATION ............................................................................................................... 1
B. SITE HISTORY, CHARACTERIZATION AND PURPOSE ................................................... 2
C. HISTORIC FREE PRODUCT GAUGING ................................................................................. 2
D. GROUNDWATER ASSESSMENT ACTIVITIES ..................................................................... 3
E. REGIONAL GEOLOGY AND HYDROGEOLOGY ................................................................ 4
F. SITE GEOLOGY AND HYDROGEOLOGY ............................................................................. 4
G. DETERMINATION OF GROUNDWATER FLOW DIRECTION ........................................ 4
H. CONCLUSIONS .............................................................................................................................. 5
I. RECOMMENDATIONS ................................................................................................................ 5

FIGURES
Figure 1 – Topographic Site Map
Figure 2 – Site Map
Figure 3 – Potentiometric Surface Map
Figure 4 – Water-Supply Well Location Map
Figure 5 – Groundwater Analytical Results Map
Figure 6 – Benzene Isoconcentration Map
Figure 7 – Total BTEX Isoconcentration Map
Figure 8 – MTBE Isoconcentration Map

TABLES
Table B-1 – Site History, UST/AST System Information
Table B-2 – Site History, UST Owner/Operator Information
Table B-4 – Summary of Groundwater Analytical Results
Table B-7 – Well Construction Information and Historical Groundwater Elevations

APPENDIX

BTEX and MTBE versus Time Graphs
Groundwater Monitoring Well Sampling Data Sheets
Laboratory Analytical Reports and Chain-of-Custody Records
Pre-CAP Monitoring Report October 5, 2016
Pagetown Exxon, Reidsville, North Carolina Progress Project 1016066.002
- 2 -
B. SITE HISTORY, CHARACTERIZATION AND PURPOSE

The site is located at 8035 Cherry Grove Road in Reidsville, Caswell County, North Carolina
(Figures 1 and 2). The site consists of a convenience store which stores petroleum products in
underground storage tanks (USTs) and aboveground storage tanks (ASTs) for retail sale. Formerly
kerosene and diesel fuel were stored in USTs. The kerosene and diesel fuel USTs were removed
following the discovery of a release in 2014. Three active USTs are present at the site and used to
store gasoline. The site is located in a commercial and residential area of rural Caswell County.
The surrounding properties are served by water-supply wells within 1,500 feet of the source area.
Progress previously completed an Initial Abatement Action Report, dated July 24, 2014; a Phase II
Limited Site Assessment (LSA), dated November 26, 2014; a Free Product Recovery and Water-
Supply Sampling Report dated May 8, 2015; and, a Water-Supply Well Sampling Report, dated
July 31, 2015. The NCDEQ issued a Notice of Regulatory Requirements (NORR), dated
December 4, 2014, requiring that a Comprehensive Site Assessment (CSA) be completed for the
site. Following discussions with the NCDEQ, it was determined that prior to completing a CSA,
free product recovery activities were to be performed and the nearby water-supply wells sampled.
A revised CSA was submitted to the NCDEQ on June 2, 2016. A description of the former UST
systems is listed in Table B-1 below. Figure 2 depicts the site and the location of the monitoring
wells.
Table B-1
Site History, UST/AST System Information

Tank
No.
Installation
Date
Capacity
(gallons)
Construction
Materials
Dimensions
(inches)
Removal
Date Contents Previous
Contents
1 4/30/1989 6,000 Steel 63” x 216” Present Gasoline Gasoline
2 4/30/1989 8,000 Steel 63” x 216” Present Gasoline Gasoline
3 4/30/1989 4,000 Steel 63” x 216” Present Gasoline Gasoline
4 4/30/1989 2,000 Steel (STP-3) 64” x 12’ 6/16/14 Diesel Diesel
5 4/30/1989 1,000 Steel (STP-3) 64” x 6’ 6/16/14 Kerosene Kerosene
6 2014 (AST) 500 Steel 64” x 12’ Present Kerosene Kerosene
7 2014 (AST) 1,500 Diesel Diesel
8 Unknown 2,000 Steel Unknown 1989 Gasoline Gasoline
9 Unknown 2,000 Steel Unknown 1989 Gasoline Gasoline
10 Unknown 1,000 Steel Unknown 1989 Gasoline Gasoline

Table B-2
Site History, UST Owner/Operator Information

Owner’s Name Address Phone Number Dates of Ownership
Eden Oil Company, Inc. P.O. Box 1375
Reidsville, NC 27323 [phone] 1989-Present

C. HISTORIC FREE PRODUCT GAUGING

Approximately 0.69 feet of free product were measured in monitoring well MW-1 during the LSA
sampling event on November 11, 2014.

Pre-CAP Monitoring Report October 5, 2016
Pagetown Exxon, Reidsville, North Carolina Progress Project 1016066.002
- 3 -
On March 9, 2015, Progress gauged free product in monitoring well MW-1 prior to the MMPE
event. Approximately 2.92 feet of free product were measured in monitoring well MW-1.

On April 13, 2015 Progress returned to the site to sample the surrounding water-supply wells and
gauge groundwater/free product levels in monitoring well MW-1, as appropriate. Approximately
1.71 feet of free product were measured in monitoring well MW-1.

Approximately 5.10 feet of free product were measured in monitoring well MW-1 during a water-
supply well sampling event on July 6, 2015.

Approximately 5.55 feet of free product were measured in monitoring well MW-1 during the CSA
sampling event on August 3, 2015, and 0.80 feet on March 15, 2016.

On September 8, 2016 Progress returned to the site to sample the existing monitoring wells and
gauge water/free product levels in the monitoring wells, as appropriate. Approximately 0.44 feet
of free product was identified in monitoring well MW-1.

D. GROUNDWATER ASSESSMENT ACTIVITIES

On September 8, 2016 Progress returned to the site to sample the existing monitoring and recovery
wells and to gauge water/free product levels, as appropriate. Approximately 0.44 feet of free
product was detected in monitoring well MW-1. Groundwater samples were collected from
monitoring wells MW-2 through MW-8, DW-1 and DW-2. Groundwater samples were also
collected from water-supply wells 1, 5, 6, 7, 12, 14, 15, 16, 20, and 22.

Prior to sampling, the wells were developed until the development water ran relatively clear, and
the wells were purged of an additional three casing volumes of water prior to sampling. The
groundwater depths in the wells were measured prior to well purging using a decontaminated
electric sounder. The wells were previously surveyed to an accuracy of 0.01 foot referenced to an
arbitrarily assigned benchmark (top of casing of monitoring well MW-3), which was assigned an
elevation of 100 feet above mean sea level. The elevations of the monitoring wells and the water
table are both relative to that benchmark. A groundwater elevation map depicting the measured
depths to the water table as measured in each of the wells was constructed and is provided as
Figure 3. The map depicts the estimated groundwater flow beneath the site to be generally towards
the south-southwest.

The groundwater samples were decanted into laboratory-supplied bottles and placed into a cooler
packed with ice. The cooler was delivered under chain-of-custody to Research & Analytical
Laboratories (R&A) for testing. R&A analyzed the groundwater samples collected from
monitoring wells MW-2 through MW-6 and DW-1 for volatile organic compounds (VOCs) by
Standard Method 6200B plus isopropyl ether (IPE), ethylene dibromide (EDB), and methyl tert-
butyl ether (MTBE) and for EDB using EPA Method 504.1. The groundwater samples collected
from monitoring wells MW-7, MW-8, and DW-2 were analyzed using Standard Method 6200B
only. Groundwater sample analytical results are included in Table B-4 and Figure 4.

Laboratory analysis of the groundwater sample collected from monitoring wells MW-3, MW-6,
MW-7, MW-8, DW-1, and DW-2 and water-supply wells 1, 5, 6, 7, 12, 15, 16, 20, and 22 did not
Pre-CAP Monitoring Report October 5, 2016
Pagetown Exxon, Reidsville, North Carolina Progress Project 1016066.002
- 4 -
detect targeted compounds above the their respective North Carolina 2L Groundwater Quality
Standards (NC2LGWQS).

Laboratory analysis of the groundwater samples collected from monitoring wells MW-2, MW-4,
MW-5 and water-supply well 14 detect various targeted compounds above the their respective
NC2LGWQS; however, the concentrations do not exceed the applicable North Carolina risk-based
Gross Contamination Levels (GCLs) except for the concentration of benzene detected in
monitoring well MW-5.

A summary of the groundwater results is included as Table B-4 and Figure 5. Isoconentration maps
for benzene, MTBE and total BTEX are included as Figures 6 through 8, respectively. A groundwater
contamination plume location map is included as Figure 8. BTEX and MTBE versus Time graphs
are included in the Appendix.

E. REGIONAL GEOLOGY AND HYDROGEOLOGY

According to the Geologic Map of North Carolina, the subject site is located in the Carolina Stale
Belt of North Carolina. The rocks beneath the site have been characterized as metamorphosed
granitic rocks. Groundwater generally is stored in the pore space between individual grains of
residual soil and in the fractures within the underlying parent rock. Due to the intense shearing
associated with the thrust faulting in the area and the relatively shallow depths to bedrock, it can be
expected that the fractures play a major role in the flow of groundwater in the subsurface.

Recharge to the water table is primarily by precipitation infiltrating the upper soils and percolating
downward, under the influence of gravity, to the groundwater table. Typically, the water table is not
a level surface, but a subdued reflection of the land surface. However, the depth to the water table is
not constant, and depends on many factors, which include the amount of rainfall, the permeability of
the soil, and the amount of groundwater being pumped in the area.

F. SITE GEOLOGY AND HYDROGEOLOGY

Based on our review of the topographic map and on-site observation, the site is located on an east-
west trending ridge. Groundwater generally flows in directions sub-parallel to the ground surface
slopes and under the influence of gravity toward points of discharge such as creeks, swamps,
drainage swales, or pumped groundwater wells. Based on topographic inference, groundwater
beneath the site most likely flows to the south-southwest toward an intermittent tributary of Stony
Creek (Figure 1). Based on the excavation and drilling activities at the site, the soil beneath the
site consists predominately of a silty to sandy clay material.

G. DETERMINATION OF GROUNDWATER FLOW DIRECTION

The depth to the groundwater surface in each of the monitoring and recovery wells was measured
prior to the monitoring well purging using a decontaminated electric sounder. The wells were
surveyed by Progress using a relative benchmark (top of casing for monitoring well MW-3) that
was arbitrarily given an elevation of 100 feet. The elevations of the monitoring wells and the
groundwater surface are both relative to that benchmark. The relative groundwater elevations are
shown in Table B-7.
Pre-CAP Monitoring Report October 5, 2016
Pagetown Exxon, Reidsville, North Carolina Progress Project 1016066.002
- 5 -
Groundwater elevations are depicted on Figure 3. Based on information collected during the most
recent sampling event, the groundwater flow direction appears to be generally to the south-
southwest, beneath the site.

H. CONCLUSIONS

Based on the results of the groundwater sampling event, Progress makes the following
conclusions:

 Laboratory analysis of the groundwater sample collected from monitoring wells MW-3,
MW-6, MW-7, MW-8, DW-1, and DW-2 and water-supply wells 1, 5, 6, 7, 12, 15, 16, 20,
and 22 did not detect targeted compounds above the their respective NC2LGWQS.

 Laboratory analysis of the groundwater samples collected from monitoring wells MW-2,
MW-4, MW-5 and water-supply well 14 detect various targeted compounds above the
their respective NC2LGWQS; however, the concentrations do not exceed the applicable
North Carolina risk-based GCLs except for the concentration of benzene detected in
monitoring well MW-5.

 Approximately 0.44 feet of free product was detected in monitoring well MW-1.

I. RECOMMENDATIONS

Based on the remaining concentrations in select groundwater samples exceeding their respective
NC2LGWQS and the GCLs, and free product persisting Progress recommends the following:

 Progress recommends having discussions with the NCDEQ to determine corrective action
goals and acceptable remediation strategies.

Progress will not complete additional activities at the site unless pre-approved by the NCDEQ.

FIGURES

Figure 1
Topographic Site Map

Pagetown Exxon
8035 Cherry Grove Road
Reidsville, Caswell County, North Carolina

P.O. Box 5884
Winston-Salem, NC 27113
Telephone: [phone]
Fax: [phone]
www.progressenvironmental.com

United States Department of the Interior
USGS 7.5 Minute Series Topographic Map
Contour Interval: 10 feet
Scale: 1”=2000’
Cherry Grove, North Carolina
Date: 1997
Project: Pagetown Exxon

Client: Eden Oil Company
Progress Job #: 1016066.002
Date: October 2016

SITE
Site
LEGEND
Approximate Monitoring Well Location
Product Dispenser
MW-1
MW-4
MW-3
MW-2
MW-4
MW-5
MW-6
Approximate R-O-W
Approximate Subsurface Utility Location
DW-1
G A SG A SG A SK
-1/Dies
DIESEL
K-1
Approximate UST LocationDIESEL
K-1/Dies Approximate AST Location
DW-2
MW-7
MW-8
H
O
GRAPHIC SCALE
1" = 30'
30'0'30'60'
CHERRY GROVE ROAD
PAGETOWN ROADN
EW
ProgressENVIRONMENTAL, INC.JAB1016066.002OCT 2016JTRAS SHOW NOCT 2016Figure 2.SKFP.O. Box 5884W INSTON-SALEM, NORTH CAROLINA 27113PHONE [phone] FAX [phone]FIG URE 2SITE M AP8035 CHERRRY G RO VE RO ADREIDSVILLE, N O RTH CARO LINAPROJECT
MW-6
LEGEND
Approximate Monitoring Well Location &
Groundwater Elevation
Product Dispenser
MW-1
MW-4
MW-3
MW-4
MW-5
Approximate R-O-W
Approximate Subsurface Utility Location
DW-1
G A SG A SG A SK
-1/Dies
DIESEL
K-1
Approximate UST LocationDIESEL
K-1/Dies Approximate AST Location
DW-2
MW-7
MW-8
H
O
GRAPHIC SCALE
1" = 30'
30'0'30'60'
CHERRY GROVE ROAD
PAGETOWN ROADN
EW
MW-2
(77.90)
(77.91)
(79.16)
(79.42)
(78.70)82.00(82.35)
(82.08)
Please note: MW-1 was not used in the calculation due to the presence of free product. The Type III
wells were also not used in the calculation.
Groundwater Contour and Elevation
Calculated Groundwater Flow Direction
Contour Interval = 1.00 feet
82.00
Inferred Groundwater Contour Elevation
(79.90)
(FP)81.0080.0079.0078.00 ProgressENVIRONMENTAL, INC.JAB1016066.002OCT 2016JTRAS SHOW NOCT 2016Figure 3.SKFP.O. Box 5884W INSTON-SALEM, NORTH CAROLINA 27113PHONE [phone] FAX [phone]FIG URE 3PO TENTIO M ETR IC SUR FACE M AP8035 CHERRRY G RO VE RO ADREIDSVILLE, N O RTH CARO LINAPROJECT
GRAPHIC SCALE
1" = 300'
300'0'300'600'ProgressENVIRONMENTAL, INC.JAB1016066.002OCT 2016JTRAS SHOW NOCT 2016Figure 4.SKFP.O. Box 5884W INSTON-SALEM, NORTH CAROLINA 27113PHONE [phone] FAX [phone]FIG URE 4W ATER-SU PPLY W ELL LO C ATIO N M AP8035 CHERRRY G RO VE RO ADREIDSVILLE, N O RTH CARO LINAPROJECTAPPROXIMATE OBSERVED WATER-SUPPLY WELL LOCATION
1 2
3
22
5
6
7
9 10
11
1 2 13
14 15
16
17
20
23
24
18
19
1,000'500'250'750'
BQL
LEGEND
Approximate Monitoring Well Location
Product Dispenser
MW-1
MW-4
MW-3
MW-2
MW-4
MW-5
MW-6
Approximate R-O-W
Approximate Subsurface Utility Location
DW-1
G A SG A SG A SK
-1/Dies
DIESEL
K-1
Approximate UST LocationDIESEL
K-1/Dies Approximate AST Location
DW-2
MW-7
MW-8
H
O
GRAPHIC SCALE
1" = 30'
30'0'30'60'
CHERRY GROVE ROAD
PAGETOWN ROADN
EW
Benzene 34.5 ppb
Chloroform 3.99 ppb
Ethylbenzene 98.5 ppb
I-Propylbenzene 20.3 ppb
Naphthalene 115 ppb
N-Butylbenzene 7.40 ppb
N-Propylbenzene 28.5 ppb
P-Isopropyltoluene 10.2 ppb
Sec-Butylbenzene 9.48 ppb
Toluene 32 ppb
1,2,4-Trimethylbenzene 385 ppb
1,3,5-Trimetylbenzene 97.8 ppb
Total Xylenes 810 ppb
Benzene 0.95 ppb
Ethylbenzene 27.7 ppb
I-Propylbenzene 6.99 ppb
Naphthalene 27.4 ppb
N-Butylbenzene 1.33 ppb
N-Propylbenzene 8.17 ppb
P-Isopropyltoluene 4.99 ppb
sec-Butylbenzene 3.34 ppb
Toluene 10.9 ppb
1,2,4-Trimethylbenzene 115 ppb
1,3,5-Trimethylbenzene 49.3 ppb
Total Xylenes 193 ppb
Below Quantitation Limits
Naphthalene 0.69 ppb
1,2,4-Trimetylbenzene 0.82 ppb
1,3,5-Trimethylbenzene 1.26 ppb
Total Xylenes 1.27 ppb
MTBE 18.3 ppb
IPE 0.95 ppb
MTBE 10.7 ppb
IPE 2.38 ppb
Chloroform 3.94 ppb
Benzene 5,070 ppb
1,2-Dichloroethane 66 ppb
Ethylbenzene 2,960 ppb
I-Propylbenzene 148 ppb
Naphthalene 585 ppb
N-Propylbenzene 330 ppb
Toluene 30,400 ppb
1,2,4-Trimethylbenzene 2,500 ppb
1,3,5-Trimethylbenzene 601 ppb
Total Xylenes 17,700 ppb
MTBE 7,060 ppb
IPE 1,050 ppb
EDB 31.4 ppb
Free Product
ProgressENVIRONMENTAL, INC.JAB1016066.002SEP 2016JTRAS SHOW NSEP 2016Figure 5.SKFP.O. Box 5884W INSTON-SALEM, NORTH CAROLINA 27113PHONE [phone] FAX [phone]FIG URE 5G R O UNDW ATER ANALYTICAL RESULTS M AP8035 CHERRRY G RO VE RO ADREIDSVILLE, N O RTH CARO LINAPROJECT
K-1
LEGEND
Approximate Monitoring Well Location
and benzene concentration (ppb)
Product Dispenser
MW-1
MW-3
MW-5
MW-5
MW-6
Approximate R-O-W
Approximate Subsurface Utility Location
G A SG A SG A SK
-1/Dies
DIESEL
Approximate UST LocationDIESEL
K-1/Dies Approximate AST Location
MW-7
MW-8
H
O
GRAPHIC SCALE
1" = 30'
30'0'30'60'
CHERRY GROVE ROAD
PAGETOWN ROADN
EW
MW-4
(BQL)
(BQL)
(5,070)
MW-2
(0.95)
(BQL)
(5,070)
(34.5)
1,000
(FP)
100
BQL
DW-1
(BQL)DW-2
(BQL)
(BQL)
Please note: The type III monitoring wells were not utilized in the
isoconcentration maps.ProgressENVIRONMENTAL, INC.JAB1016066.002OCT 2016JTRAS SHOW NOCT 2016Figure 6.SKFP.O. Box 5884W INSTON-SALEM, NORTH CAROLINA 27113PHONE [phone] FAX [phone]FIG URE 6BENZENE ISO C O NCENTRATIO N M AP8035 CHERRRY G RO VE RO ADREIDSVILLE, N O RTH CARO LINAPROJECT
BQL
LEGEND
Approximate Monitoring Well Location
Product Dispenser
MW-1
MW-4
MW-3
MW-2
MW-4
MW-5
MW-6
Approximate R-O-W
Approximate Subsurface Utility Location
DW-1
G A SG A SG A SK
-1/Dies
DIESEL
K-1
Approximate UST LocationDIESEL
K-1/Dies Approximate AST Location
DW-2
MW-7
MW-8
H
O
GRAPHIC SCALE
1" = 30'
30'0'30'60'
CHERRY GROVE ROAD
PAGETOWN ROADN
EW
Benzene 34.5 ppb
Chloroform 3.99 ppb
Ethylbenzene 98.5 ppb
I-Propylbenzene 20.3 ppb
Naphthalene 115 ppb
N-Butylbenzene 7.40 ppb
N-Propylbenzene 28.5 ppb
P-Isopropyltoluene 10.2 ppb
Sec-Butylbenzene 9.48 ppb
Toluene 32 ppb
1,2,4-Trimethylbenzene 385 ppb
1,3,5-Trimetylbenzene 97.8 ppb
Total Xylenes 810 ppb
Benzene 0.95 ppb
Ethylbenzene 27.7 ppb
I-Propylbenzene 6.99 ppb
Naphthalene 27.4 ppb
N-Butylbenzene 1.33 ppb
N-Propylbenzene 8.17 ppb
P-Isopropyltoluene 4.99 ppb
sec-Butylbenzene 3.34 ppb
Toluene 10.9 ppb
1,2,4-Trimethylbenzene 115 ppb
1,3,5-Trimethylbenzene 49.3 ppb
Total Xylenes 193 ppb
Below Quantitation Limits
Naphthalene 0.69 ppb
1,2,4-Trimetylbenzene 0.82 ppb
1,3,5-Trimethylbenzene 1.26 ppb
Total Xylenes 1.27 ppb
MTBE 18.3 ppb
IPE 0.95 ppb
MTBE 10.7 ppb
IPE 2.38 ppb
Chloroform 3.94 ppb
Benzene 5,070 ppb
1,2-Dichloroethane 66 ppb
Ethylbenzene 2,960 ppb
I-Propylbenzene 148 ppb
Naphthalene 585 ppb
N-Propylbenzene 330 ppb
Toluene 30,400 ppb
1,2,4-Trimethylbenzene 2,500 ppb
1,3,5-Trimethylbenzene 601 ppb
Total Xylenes 17,700 ppb
MTBE 7,060 ppb
IPE 1,050 ppb
EDB 31.4 ppb
Free Product
ProgressENVIRONMENTAL, INC.JAB1016066.002OCT 2016JTRAS SHOW NOCT 2016Figure 5.SKFP.O. Box 5884W INSTON-SALEM, NORTH CAROLINA 27113PHONE [phone] FAX [phone]FIG URE 5G R O UNDW ATER ANALYTICAL RESULTS M AP8035 CHERRRY G RO VE RO ADREIDSVILLE, N O RTH CARO LINAPROJECT
K-1
LEGEND
Approximate Monitoring Well Location
and Total BTEX concentration (ppb)
Product Dispenser
MW-1
MW-3
MW-4
MW-5
MW-6
Approximate R-O-W
Approximate Subsurface Utility Location
G A SG A SG A SK
-1/Dies
DIESEL
Approximate UST LocationDIESEL
K-1/Dies Approximate AST Location
MW-7
MW-8
H
O
GRAPHIC SCALE
1" = 30'
30'0'30'60'
CHERRY GROVE ROAD
PAGETOWN ROADN
EW
MW-4
MW-2
(232.55)
(56,130)
(975)
20,000
(FP)
1,000
BQL
DW-1
(1.27)DW-2
(BQL)
(BQL)
(BQL)
(BQL)
(BQL)
(232.55)
Please note: The type III monitoring wells were not utilized in the
isoconcentration maps.ProgressENVIRONMENTAL, INC.JAB1016066.002OCT 2016JTRAS SHOW NOCT 2016Figure 7.SKFP.O. Box 5884W INSTON-SALEM, NORTH CAROLINA 27113PHONE [phone] FAX [phone]FIG URE 7TO TAL BTEX ISO CO N CENTR ATIO N M AP8035 CHERRRY G RO VE RO ADREIDSVILLE, N O RTH CARO LINAPROJECT
K-1
LEGEND
Approximate Monitoring Well Location
and MTBE concentration (ppb)
Product Dispenser
MW-1
MW-3
MW-7
MW-5
MW-6
Approximate R-O-W
Approximate Subsurface Utility Location
G A SG A SG A SK
-1/Dies
DIESEL
Approximate UST LocationDIESEL
K-1/Dies Approximate AST Location
MW-7
MW-8
H
O
GRAPHIC SCALE
1" = 30'
30'0'30'60'
CHERRY GROVE ROAD
PAGETOWN ROADN
EW
MW-4
(BQL)
(38.9)
MW-2
(BQL)
(BQL)
DW-1 DW-2
(BQL)
(10.7)
5,000
BQL
(18.3)
Please note: The type III monitoring wells were not utilized in the
isoconcentration maps.
(BQL)
(7,060)
100
ProgressENVIRONMENTAL, INC.JAB1016066.002OCT 2016JTRAS SHOW NOCT 2016Figure 8.SKFP.O. Box 5884W INSTON-SALEM, NORTH CAROLINA 27113PHONE [phone] FAX [phone]FIG URE 8M TBE ISO CO NC ENTRATIO N M AP8035 CHERRRY G RO VE RO ADREIDSVILLE, N O RTH CARO LINAPROJECT

TABLES
504.1
Well ID Date Collected
(m/dd/yy)
Depth to Water
(Ft. Below TOC)
11/11/2014 FP (0.69')FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP NM NM NM NM NM NM
4/13/2015 FP (1.71')FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP NM NM NM NM NM NM
7/6/2015 FP (5.10')FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP NM NM NM NM NM NM
8/3/2015 FP (5.55')FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP NM NM NM NM NM NM
3/23/2016 FP (0.80')FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP NM NM NM NM NM NM
9/9/2016 FP (0.44')FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP NM NM NM NM NM NM
11/12/2014 21.61 BQL NA NA NA BQL NA NA NA NA NA NA BQL NA NA BQL BQL BQL BQL BQL BQL See Data NA NA BQL BQL 111 BQL 5.31 18.5 78.9 NM NM NM
8/3/2015 21.18 33.3 NA NA NA 90.6 NA NA NA NA NA NA 292 NA NA 1,120 BQL BQL 17.8 17.6 39.7 See Data NA NA NA NA NA NA 7.36 18.5 74.3 NM NM NM
3/23/2016 17.65 4.71 BQL 2.72 BQL 13.4 2.38 9.61 0.55 2.98 1.15 0.94 2.97 35.8 12.8 74.3 BQL BQL NA NA NA NA NA NA NA NA NA NA 5.91 19.3 72.9 NM NM NM
9/9/2016 20.43 34.5 BQL 3.99 BQL 98.5 20.3 115 7.40 28.5 10.2 9.48 32 385 97.8 810 BQL BQL NA NA NA NA BQL NA NA NA NA NA 5.91 19.3 72.9 NM NM NM
11/12/2014 22.54 BQL NA NA NA BQL NA NA NA NA NA NA BQL NA NA BQL BQL BQL BQL BQL BQL See Data NA NA BQL BQL BQL BQL 5.25 17.4 57.5 NM NM NM
8/3/2015 22.24 BQL NA NA NA BQL NA NA NA NA NA NA BQL NA NA BQL BQL BQL BQL BQL BQL BQL NA NA NA NA NA NA 8.12 17.4 53.8 NM NM NM
3/23/2016 18.75 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL NA NA NA NA NA NA NA NA NA NA 5.60 17.6 52.1 NM NM NM
9/9/2016 21.30 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL NA NA NA NA BQL NA NA NA NA NA 5.60 17.6 52.1 NM NM NM
11/12/2014 23.15 BQL NA NA NA 1.94 NA NA NA NA NA NA 2.15 NA NA 12.3 BQL BQL BQL BQL BQL See Data NA NA BQL 402 109 BQL 5.31 17.5 59.5 NM NM NM
8/3/2015 22.65 BQL NA NA NA 1.14 NA NA NA NA NA NA 1.31 NA NA 13.1 BQL BQL BQL BQL BQL BQL NA NA NA NA NA NA 5.32 16.9 48.1 NM NM NM
3/23/2016 19.75 BQL BQL BQL BQL 2.49 BQL 14.5 BQL BQL 1.17 BQL 5.62 7.78 15.3 41.9 BQL BQL NA NA NA NA NA NA NA NA NA NA 5.56 17.4 50.3 NM NM NM
9/9/2016 21.20 0.95 BQL BQL BQL 27.7 6.99 27.4 1.33 8.17 4.99 3.34 10.9 115 49.3 193 BQL BQL NA NA NA NA BQL NA NA NA NA NA 5.56 17.4 50.3 NM NM NM
8/3/2015 21.74 6,610 NA NA NA 4,970 NA NA NA NA NA NA 54,800 NA NA 44,900 11,600 1,580 132 67.6 621 See Data NA NA 79,700 68,730 62,049 BQL 4.93 19.0 101.9 NM NM NM
3/23/2016 17.51 1,370 BQL BQL BQL 2,120 153 497 BQL 311 BQL BQL 14,100 2,280 608 12,300 BQL 97 NA NA NA NA NA NA NA NA NA NA 5.81 19.1 193 NM NM NM
9/9/2016 19.95 5,070 BQL BQL 66 2,960 148 585 BQL 330 BQL BQL 30,400 2,500 601 17,700 7,060 1,050 NA NA NA NA 31.4 NA NA NA NA NA 5.81 19.1 193 NM NM NM
8/3/2015 20.53 BQL NA NA NA BQL NA NA NA NA NA NA 2.69 NA NA 6.83 BQL BQL BQL BQL BQL BQL NA NA 183 260 260 BQL 4.63 18.3 414 NM NM NM
3/23/2016 15.17 BQL 2.71 60.7 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL NA NA NA NA NA NA NA NA NA NA 5.35 18.4 807 NM NM NM
9/9/2016 19.62 BQL BQL 3.94 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL NA NA NA NA BQL NA NA NA NA NA 5.35 18.4 807 NM NM NM
3/23/2016 16.00 BQL BQL 0.84 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 38.9 1.43 BQL BQL BQL BQL BQL 28.5 187 BQL BQL BQL 7.44 18.1 156.6 NM NM NM
9/9/2016 19.50 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 18.3 0.95 BQL BQL BQL BQL NA NA 187 BQL BQL BQL 7.44 18.1 156.6 NM NM NM
3/23/2016 17.29 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 8.40 BQL BQL BQL BQL 9.20 17.8 42.4 NM NM NM
9/9/2016 20.91 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL NA NA BQL BQL BQL BQL 9.20 17.8 42.4 NM NM NM
8/3/2015 NM BQL NA NA NA BQL NA NA NA NA NA NA BQL NA NA 2.66 BQL BQL BQL BQL BQL See Data NA NA BQL BQL 132 BQL 9.56 18.1 328 NM NM NM
3/23/2016 19.18 BQL BQL 0.63 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL NA NA NA NA NA BQL NA NA NA NA 7.35 17.4 203 NM NM NM
9/9/2016 22.20 BQL BQL BQL BQL BQL BQL 0.69 BQL BQL BQL BQL BQL 0.82 1.26 1.27 BQL BQL NA NA NA NA BQL NA NA NA NA NA NM NM NM NM NM NM
3/23/2016 18.06 7.22 BQL BQL BQL 1.18 0.57 1.72 BQL BQL BQL BQL 5.94 7.98 BQL 29.7 15.6 3.38 BQL BQL BQL See Data 0.122 NA 155 184 BQL BQL 5.81 19.1 251 NM NM NM
9/9/2016 21.29 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 10.7 2.38 BQL BQL BQL See Data NA NA BQL BQL BQL BQL NM NM NM NM NM NMDW-2
MW-3
MW-1
MW-5
MW-6
DW-1
MW-2
MW-7
MW-8 C9-C18 AliphaticsC5-C8 AliphaticsContaminant of Concern
IPEMW-4 C9-C22 AromaticsEthylbenzeneTolueneC19-C36 AliphaticsTotal XylenesMTBE1-MethylnaphthaleneNaphthaleneTICs DetectedSec-Butylbenzene1,2,4-Trimethylbenzene1,3,5-TrimethylbenzeneI-PropylbenzeneNaphthaleneN-Butylbenzenep-IsopropyltolueneEPH & VPHAnalytical Method
Table B-4
Summary of Groundwater Analytical Results
Pre-CAP Monitoring Report
Pagetown Exxon
Field Measurements
EDBLead625BNA+10 TICs
2-Methylnaphthalene602 or 6200B
BenzeneBromodichloromethaneChloroformN-Propylbenzene1,2-DichloroethanepHConductivity (mS/cm)ORPDO (mg/L)CO2Temperature (ºC)
504.1
Well ID Date Collected
(m/dd/yy)
Depth to Water
(Ft. Below TOC)C9-C18 AliphaticsC5-C8 AliphaticsContaminant of Concern
IPEC9-C22 AromaticsEthylbenzeneTolueneC19-C36 AliphaticsTotal XylenesMTBE1-MethylnaphthaleneNaphthaleneTICs DetectedSec-Butylbenzene1,2,4-Trimethylbenzene1,3,5-TrimethylbenzeneI-PropylbenzeneNaphthaleneN-Butylbenzenep-IsopropyltolueneEPH & VPHAnalytical Method Field Measurements
EDBLead625BNA+10 TICs
2-Methylnaphthalene602 or 6200B
BenzeneBromodichloromethaneChloroformN-Propylbenzene1,2-DichloroethanepHConductivity (mS/cm)ORPDO (mg/L)CO2Temperature (ºC)3/23/2016 --BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL NA NA NA NA NA NA NA NA NA NA NM NM NM NM NM NM
9/9/2016 --BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL NA NA NA NA NA NA NA NA NA NA NM NM NM NM NM NM
WSW-2 7/6/2015 --BQL NA NA NA BQL NA NA NA NA NA NA BQL NA NA BQL BQL BQL BQL BQL BQL NA NA NA NA NA NA NA NM NM NM NM NM NM
WSW-3 7/6/2015 --BQL NA NA NA BQL NA NA NA NA NA NA BQL NA NA BQL BQL BQL BQL BQL BQL NA NA NA NA NA NA NA NM NM NM NM NM NM
4/13/2015 --BQL NA NA NA BQL NA NA NA NA NA NA BQL NA NA BQL BQL BQL BQL BQL BQL NA NA NA NA NA NA NA NM NM NM NM NM NM
7/6/2015 --BQL NA NA NA BQL NA NA NA NA NA NA BQL NA NA BQL BQL BQL BQL BQL BQL NA NA NA NA NA NA NA NM NM NM NM NM NM
3/23/2016 --BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL NA NA NA NA NA NA NA NA NA NA NM NM NM NM NM NM
9/9/2016 --BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL NA NA NA NA NA NA NA NA NA NA NM NM NM NM NM NM
4/13/2015 --NA NA NA NA BQL NA NA NA NA NA NA NA NA NA NA BQL BQL BQL BQL BQL NA NA NA NA NA NA NA NM NM NM NM NM NM
7/6/2015 --BQL NA NA NA BQL NA NA NA NA NA NA BQL NA NA BQL BQL BQL BQL BQL BQL NA NA NA NA NA NA NA NM NM NM NM NM NM
3/23/2016 --BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL NA NA NA NA NA NA NA NA NA NA NM NM NM NM NM NM
9/9/2016 --BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL NA NA NA NA NA NA NA NA NA NA NM NM NM NM NM NM
4/13/2015 --BQL NA NA NA BQL NA NA NA NA NA NA BQL NA NA BQL BQL BQL BQL BQL BQL NA NA NA NA NA NA NA NM NM NM NM NM NM
7/6/2015 --BQL NA NA NA BQL NA NA NA NA NA NA BQL NA NA BQL BQL BQL BQL BQL BQL NA NA NA NA NA NA NA NM NM NM NM NM NM
3/23/2016 --BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL NA NA NA NA NA NA NA NA NA NA NM NM NM NM NM NM
9/9/2016 --BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL NA NA NA NA NA NA NA NA NA NA NM NM NM NM NM NM
WSW-9 7/6/2015 --BQL NA NA NA BQL NA NA NA NA NA NA BQL NA NA BQL BQL BQL BQL BQL BQL NA NA NA NA NA NA NA NM NM NM NM NM NM
WSW-10 7/6/2015 --BQL NA NA NA BQL NA NA NA NA NA NA BQL NA NA BQL BQL BQL BQL BQL BQL NA NA NA NA NA NA NA NM NM NM NM NM NM
4/13/2015 --BQL NA NA NA BQL NA NA NA NA NA NA BQL NA NA BQL BQL BQL BQL BQL BQL NA NA NA NA NA NA NA NM NM NM NM NM NM
7/6/2015 --BQL NA NA NA BQL NA NA NA NA NA NA BQL NA NA BQL BQL BQL BQL BQL BQL NA NA NA NA NA NA NA NM NM NM NM NM NM
3/23/2016 --BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL NA NA NA NA NA NA NA NA NA NA NM NM NM NM NM NM
9/9/2016 --BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL NA NA NA NA NA NA NA NA NA NA NM NM NM NM NM NM
WSW-13 7/6/2015 --BQL NA NA NA BQL NA NA NA NA NA NA BQL NA NA BQL BQL BQL BQL BQL BQL NA NA NA NA NA NA NA NM NM NM NM NM NM
4/13/2015 --21.7 NA NA NA BQL NA NA NA NA NA NA BQL NA NA 31.6 BQL BQL BQL BQL BQL NA NA NA NA NA NA NA NM NM NM NM NM NM
7/6/2015 --143 NA NA NA BQL NA NA NA NA NA NA BQL NA NA 225 BQL BQL BQL BQL 17.0 NA NA NA NA NA NA NA NM NM NM NM NM NM
3/23/2016 --BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL NA NA NA NA NA NA NA NA NA NA NM NM NM NM NM NM
4/12/2016 --7.1 BQL BQL 3.4 9.5 1.3 5.6 BQL BQL BQL BQL BQL 21.6 4.8 17.2 BQL BQL NA NA NA NA NA NA NA NA NA NA NM NM NM NM NM NM
9/9/2016 --32.6 BQL BQL 8.93 20.4 2.13 9.49 BQL BQL BQL BQL BQL 38.5 6.11 34 BQL BQL NA NA NA NA NA NA NA NA NA NA NM NM NM NM NM NM
4/13/2015 --BQL NA NA NA BQL NA NA NA NA NA NA BQL NA NA BQL BQL BQL BQL BQL BQL NA NA NA NA NA NA NA NM NM NM NM NM NM
7/6/2015 --BQL NA NA NA BQL NA NA NA NA NA NA BQL NA NA BQL BQL BQL BQL BQL BQL NA NA NA NA NA NA NA NM NM NM NM NM NM
9/9/2016 --BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL NA NA NA NA NA NA NA NM NM NM NM NM NM
WSW-16 7/6/2015 --BQL NA NA NA BQL NA NA NA NA NA NA BQL NA NA BQL BQL BQL BQL BQL BQL NA NA NA NA NA NA NA NM NM NM NM NM NM
WSW-17 7/6/2015 --BQL NA NA NA BQL NA NA NA NA NA NA BQL NA NA BQL BQL BQL BQL BQL BQL NA NA NA NA NA NA NA NM NM NM NM NM NM
4/13/2015 --BQL NA NA NA BQL NA NA NA NA NA NA BQL NA NA BQL BQL BQL BQL BQL BQL NA NA NA NA NA NA NA NM NM NM NM NM NM
7/6/2015 --BQL NA NA NA BQL NA NA NA NA NA NA BQL NA NA BQL BQL BQL BQL BQL BQL NA NA NA NA NA NA NA NM NM NM NM NM NM
3/23/2016 --BQL BQL BQL BQL 0.86 BQL BQL BQL BQL BQL BQL BQL BQL BQL 1.45 BQL BQL NA NA NA NA NA NA NA NA NA NA NM NM NM NM NM NM
9/9/2016 --BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 1.47 BQL BQL NA NA NA NA NA NA NA NA NA NA NM NM NM NM NM NM
4/13/2015 --BQL NA NA NA BQL NA NA NA NA NA NA BQL NA NA BQL BQL BQL BQL BQL BQL NA NA NA NA NA NA NA NM NM NM NM NM NM
7/6/2015 --BQL NA NA NA BQL NA NA NA NA NA NA BQL NA NA BQL BQL BQL BQL BQL BQL NA NA NA NA NA NA NA NM NM NM NM NM NM
3/23/2016 --BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL NA NA NA NA NA NA NA NA NA NA NM NM NM NM NM NM
9/9/2016 --BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL NA NA NA NA NA NA NA NA NA NA NM NM NM NM NM NM
WSW-23 7/6/2015 --BQL NA NA NA BQL NA NA NA NA NA NA BQL NA NA BQL BQL BQL BQL BQL BQL NA NA NA NA NA NA NA NM NM NM NM NM NM
WSW-24 7/6/2015 --BQL NA NA NA BQL NA NA NA NA NA NA BQL NA NA BQL BQL BQL BQL BQL BQL NA NA NA NA NA NA NA NM NM NM NM NM NM
1 0.6 70 0.4 600 70 6 70 70 25 70 600 400 400 500 20 70 30 1 6 N/A 0.02 15 400 700 200 10,000 6.5-8.5 NS NS NS NS NS
5,000 N/A 70,000 400 84,500 25,000 6,000 6,900 30,000 11,700 8,500 260,000 28,500 25,000 85,500 20,000 70,000 12,500 1,000 5,000 N/A 50 15,000 NS NS NS NS NS NS NS NS NS NS
5 NS NS 5 700 NS NS NS NS NS NS 1,000 NS NS 10,000 NS NS NS NS NS N/A NS 15 NS NS NS NS NS NS NS NS NS NS
= Detected Concentration Exceeds the North Carolina 2L Groundwater Quality Standards (NC2LGWQS) or the EPA Drinking Water Standard as Applicable
= Detected Concentration Exceeds the GCL
BQL = Below Quantitation Limits
Results are reported in µg/l
µg/L = micrograms per liter
GCL = gross contamination level
TOC = top of casing
NS = No Standard
N/A = Not Applicable
EPH and VPH = Extractable and Volatile Petroleum Hydrocarbons
FP = Free Product
NA = Not Analyzed
NM = Not Measured
WSW-1
EPA Drinking Water Standard (µg/l)
GCL (µg/l)
WSW-14
WSW-15
WSW-12
WSW-20
NC2LGWQS Standard (µg/l)
WSW-5
WSW-22
WSW-6
WSW-7
9/8/2016
MW-1 10/22/2014 2 35 20-35 21.54 99.66 FP (0.44)78.12 FP (0.80')80.66 FP (5.55')73.17 FP (5.10')NR FP (1.71')78.15 FP (0.69')76.45
MW-2 11/11/2014 2 30 15-30 20.43 99.85
MW-3 11/11/2014 2 30 15-30 21.30 100.00
MW-4 11/11/2014 2 30 15-30 21.20 99.10
MW-5 7/23/2015 2 30 15-30 19.95 99.11
MW-6 7/23/2015 2 30 15-30 19.62 97.53
MW-7 3/17/2016 2 30 15-30 19.50 101.85
MW-8 3/16/2016 2 30 15-30 20.91 102.99
DW-1 7/22 & 23/2015 2 45 (I) 55(O)50-55 22.20 99.94
DW-2 3/16 & 17/2016 2 45 (I) 55(O)50-55 21.29 99.94
** - The top-of-casing elevation of each functioning well relative to a benchmark was established with an
assumed elevation of 100 feet (MW-3 TOC).
Please note: The depth to water measurement presented for MW-1 does not account for the presence of free product.
NR = Not Reported
NM
NM
NM
NM
Depth to Water
(feet TOC)
78.24
77.46
75.95
NM
NM
NM
NM
NM
NM
NM
NM
NM
NM
NM
11/11/2014
Groundwater Elevation
(feet)
4/13/2015
Groundwater Elevation
(feet)
NM
NM
NM
NM
NM
NM
NM
NM
NM
NM
76.45
77.37
NM
77.00
78.67
77.76
NM
NM
82.36
85.85
85.70
NM
NM
82.20
81.25
79.35
81.60
Groundwater Elevation
(feet)
3/23/2016
Table B-7
Well Construction Information and Historical Groundwater Elevations
Pre-CAP Monitoring Report
Pagetown Exxon
Well Diameter
(inches)
Relative Elevation
(feet TOC)Depth (feet)
Screen
Interval
(feet)
Installation DateMonitoring Well ID
Groundwater Elevation
(feet)
7/6/2015
Groundwater Elevation
(feet)
8/3/2015
Groundwater Elevation
(feet)
9/8/2016
79.42
78.70
77.90
78.65
79.16
77.91
82.35
82.08
77.74

APPENDIX

78.24
78.67
82.20
79.42
0
33.3
4.71
0
5
10
15
20
25
30
35
40
76
77
78
79
80
81
82
83
FEETDATE
MW-2 Benzene vs. Groundwater Elevation
Groundwater Elevation
Benzene Concentration
78.24 78.67
82.20 79.42
0 0 0 0
0
10
20
30
40
50
60
70
80
90
FEETDATE
MW-2 MTBE vs. Groundwater Elevation
Groundwater Elevation
MTBE Concentration
77.37
81.60
79.16
6,610
1,370
5,070
0
1000
2000
3000
4000
5000
6000
7000
75
76
77
78
79
80
81
82
8/1/2015 9/1/2015 10/1/2015 11/1/2015 12/1/2015 1/1/2016 2/1/2016 3/1/2016 4/1/2016 5/1/2016 6/1/2016 7/1/2016 8/1/2016 9/1/2016FEET
DATE
MW-5 Benzene vs. Groundwater Elevation
Groundwater Elevation
Benzene Concentration
77.37
81.60
79.16
11,600
0
7,060
0
2000
4000
6000
8000
10000
12000
14000
75
76
77
78
79
80
81
82
8/1/2015 9/1/2015 10/1/2015 11/1/2015 12/1/2015 1/1/2016 2/1/2016 3/1/2016 4/1/2016 5/1/2016 6/1/2016 7/1/2016 8/1/2016 9/1/2016FEET
DATE
MW-5 MTBE vs. Groundwater Elevation
Groundwater Elevation
MTBE Concentration