corrective action plan - inactive exxon facility - phoenix, md
TRANSCRIPT
1340 Charwood Road, Suite IHanover, MD
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CORRECTIVE ACTION PLAN
Inactive Exxon Service Station # 2807714258 Jarrettsville Pike
Phoenix, Maryland
MDE Case No. 2006-0303-BA2
January 2, 2009
Prepared By: Prepared For:
Kleinfelder ExxonMobil Environmental1340 Charwood Road, Suite I Services CompanyHanover, MD 21076 1413 HWY 17 South #183
Surfside Beach, SC 29575-6090
Inactive Exxon Service Station # 28077
Copyright 2009 Kleinfelder East, Inc. iii January 2009All Rights Reserved
Table of Contents
Page
1.0 Introduction .........................................................................................................1
2.0 Site Overview.......................................................................................................1
2.1 Site Area and Description..................................................................................2
2.2 Site Assessment Summary ...............................................................................3
2.2.1 Geology/Hydrogeology .................................................................................4
2.2.2 Nature and Extent of Constituents of Concern ..............................................5
3.0 Remediation Activities Completed ....................................................................7
3.1 Initial Response.................................................................................................7
3.2 UST Removal ....................................................................................................9
3.3 Interim Remedial Activities ................................................................................9
4.0 Current Remedial Activities .............................................................................12
4.1 System Design ...............................................................................................12
4.1.1 Extraction Well Layout and Construction.....................................................12
4.1.2 Vapor Phase Hydrocarbon Recovery ..........................................................12
4.1.3 Groundwater Recovery and Treatment .......................................................14
5.0 Proposed Activities...........................................................................................16
5.1 Proposed System ............................................................................................16
5.2 Potential Enhancements .................................................................................16
6.0 Permit Identification..........................................................................................17
6.1 Surface Water Discharge ................................................................................17
6.2 Off-gas Vapor Emissions.................................................................................17
6.3 Water Appropriations.......................................................................................18
7.0 Monitoring and Sampling .................................................................................18
8.0 Proposed Implementation Schedule ...............................................................19
Inactive Exxon Service Station # 28077
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LIST OF ATTACHMENTS
FIGURES
Figure 1 – Site Plan, December 23, 2008
Figure 2 – Potentiometric Surface Map, September 8, 2008
Figure 3 – East Groundwater Concentration Map, Third Quarter 2008
Figure 4 – West Groundwater Concentration Map, Third Quarter 2008
Figure 5 - Remedial Equipment Layout, December 23, 2008
Figure 6 – Groundwater Recovery and Treatment Process Flow Diagram
Figure 7 – Northeast Soil Vapor Recovery and Treatment Process Flow Diagram
Figure 8 – Southwest Soil Vapor Recovery and Treatment Process Flow Diagram
TABLE
Table 1 – Well Construction and Remediation Well Summary
ATTACHED FILE
Letter from the Maryland Department of the Environment dated October 6, 2008
Inactive Exxon Service Station # 28077
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1.0 Introduction
At the request of ExxonMobil Environmental Services Company (EMES), Kleinfelder
prepared this Corrective Action Plan (CAP) on behalf of Exxon Mobil Corporation
(ExxonMobil) for the inactive Exxon Facility # 28077 located at 14258 Jarrettsville Pike in
Phoenix, Baltimore County, Maryland (Site). This CAP has been prepared in
accordance with Code of Maryland Regulations (COMAR) 26.10.09 and was requested
by the Maryland Department of the Environment (MDE) in a letter dated October 6, 2008
(Attachment 1).
Corrective action activities have been ongoing since February 17, 2006 under the
direction of the MDE in response to the discovery of unleaded gasoline in existing
groundwater monitoring wells. Remediation activities at the Site and surrounding
properties are being conducted according to the MDE-approved Interim Remedial
Measures (IRM) Plan dated March 27, 2006 and the Updated Interim Remedial
Measures Plan dated September 25, 2006. Upgrades and modifications to the remedial
systems and remedial activities, completed since the September 25, 2006 Updated IRM
Plan, have been approved by the MDE and are summarized in the Quarterly
Groundwater Monitoring and Remedial Status Reports.
This CAP is intended to formalize the remedial activities that are already in place at the
Site and in the surrounding area. In accordance with COMAR, this CAP contains a site
assessment summary, history of previous emergency response and remedial activities,
and a corrective action plan for the facility. Details of the current remedial measures are
outlined in subsequent sections of this CAP. This CAP also describes the procedures
that EMES will employ to evaluate and obtain MDE approval for any supplemental
remedial measures that may be proposed by EMES or required by the MDE.
2.0 Site Overview
The following sections present a summary of the Site location and features based on
field reconnaissance, review of available literature, and data collected during
investigation activities.
Inactive Exxon Service Station # 28077
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2.1 Site Area and Description
Inactive Exxon Facility # 28077 is located at 14258 Jarrettsville Pike, on the southwest
corner of the intersection of Jarrettsville Pike (MD Route 146) and Sweet Air Road /
Paper Mill Road (MD Route 145) in Phoenix, Baltimore County, Maryland (Figure 1).
Three additional properties are owned by ExxonMobil in the vicinity of the Site and are
used to house remediation equipment. These properties are located near the
intersection of Jarrettsville Pike (MD Route 146) and Sweet Air Road/ Paper Mill Road
(MD Route 145), including two former commercial properties located at 3410 and 3418
Sweet Air Road, and a former commercial property immediately west of the Site at 3313
Papermill Road. Remedial equipment is also located at a private residential property at
3508 Hampshire Glen Court.
Prior to remedial activities, the facility was a retail gasoline service station consisting of
two 8,000-gallon gasoline underground storage tanks (USTs), one 10,000-gallon diesel
UST, one 12,000-gallon gasoline UST and associated piping, a canopy covering three
dispenser islands, and a service station building with three service bays and an office.
The USTs were installed in 1985 and were constructed of double-walled, fiberglass-
coated steel. One 1,000-gallon fiberglass used-oil UST and one 1,000-gallon fiberglass
heating-oil UST were removed from the Site in July 1992 and May 1997 respectively.
The remaining USTs and associated piping were removed from the facility in late March
to early April 2006. The results of these activities were reported to the MDE in the Tank
Excavation Assessment Report dated April 30, 2006 and are discussed further in
Section 3.2.
Local businesses are concentrated around the intersection of Jarrettsville Pike (MD
Route 146) and Sweet Air Road / Paper Mill Road (MD Route 145). Beyond this
“business district” the land use is primarily single-family residential properties
interspersed with some vacant, undeveloped lots and wooded areas. Area utilities
include overhead and underground electric service and underground telephone service.
Potable water in the vicinity of the Site is supplied by private supply wells. Sewage
disposal in the area is handled by private septic systems. Basements and slab-on-grade
construction are typical for properties in the vicinity of the Site. Area land use and
utilities are described in more detail in the Preliminary Hydrogeologic and Contaminant
Assessment Report (PHACAR) dated July 2006.
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2.2 Site Assessment Summary
Site investigation methods, physical setting, hydrogeologic framework, and hydrocarbon
distribution for the Site and vicinity are summarized herein, and described in detail in
several documents previously provided to the MDE including those listed below.
Preliminary Hydrogeologic and Contaminant Assessment Report (PHACAR)
(July 2006)
Request for a Permit to Appropriate and Use Waters of the State (October 2006)
Lineament Trace Analysis Report (April 18, 2008)
Expanded Monitoring Well Network Installation – Phases I/II (April 18, 2008)
Quarterly Groundwater Monitoring and Remedial Status Reports (submitted
quarterly)
Letter Reports: Discrete Interval Sampling via Hydrasleeve® (August 15, 2008
and November 14, 2008)
Domestic Well and Point of Entry Treatment (POET) Sampling Reports
(submitted quarterly)
Soil Vapor Sampling and Analysis Reports (submitted quarterly)
Site characterization activities have been discussed in detail in the aforementioned
documents and include, but are not limited to, the following:
A review of available geologic mapping and literature for the region
Advancement of boreholes for monitoring well installation
Acquisition of bedrock core samples
Down hole geophysical logging of boreholes
Surface geophysical data collection including:
Completion of an area microgravity survey and microgravity survey
profiles
Completion of seismic survey profiles
Completion of electrical resistivity imaging profiles
Lineament trace analysis
Implementation and analysis of slug tests
Completion of hydraulic profiling with blank Flexible Liner Underground
Technologies (FLUTe™) liners
Installation of custom FLUTe™ liners with discrete sampling ports
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Implementation and analysis of constant-rate aquifer pumping tests to the
northeast and southwest of the Site
Collection and analysis of discrete interval HydraSleeve® sampling
Collection and analysis of groundwater samples from monitoring wells
Collection and analysis of surface water (stream and pond) samples
Implementation and analysis of groundwater potentiometric surface and liquid
phase hydrocarbon (LPH) thickness level gauging events
Collection and analysis of private supply well samples within an approximate ½-
mile radius of the Site
Collection of soil vapor samples from soil vapor sampling points.
A summary of the overall findings from these activities is presented in the subsections
below.
2.2.1 Geology/Hydrogeology
The findings of the PHACAR and subsequent assessment activities as they relate to
area geology and hydrogeology are summarized below.
The Site is underlain by metamorphic rocks (dominantly schist) with a foliation that
strikes to the northeast-southwest and dips to the northwest. The top of the bedrock
surface and structural orientation of the foliation represent the subsurface framework that
in part controls the area topography, surface water drainage, and direction of
groundwater flow. This bedrock framework is susceptible to weathering which weakens
the bedrock structure along the direction of foliation. A lithologic change has been
identified trending in the direction of strike, with schist to the south and an epidote-
amphibolite gneiss to the north. Specifically, a generally linear, northeast-southwest
trending, weathering-enhanced fracture zone has been identified to trend through the
Site along the aforementioned lithologic contact and parallel to the direction of
metamorphic foliation. This feature is termed the “strike line.” Hydrocarbon migration
has been observed along, and generally restricted to, the linear extent of the extensively
monitored “strike line.”
Inactive Exxon Service Station # 28077
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Conformably overlying bedrock is a layer of saprolite (soil-like material derived by the
weathering of bedrock with relic bedrock structure remaining). Soils overlay the
saprolite and are generally composed of silty to sandy clays and clayey to silty sands.
The soils encountered during the investigation are generally colluvium or residual soils
resulting from the in-situ weathering of the local metamorphic bedrock. There are localized
areas of alluvium primarily within the stream channels in the vicinity of the Site. The
colluvial, alluvial, and residual soils are collectively referred to in this report as
“overburden.” The thickness of the overburden across the area of investigation ranges
from 5 feet to 65 feet.
Groundwater exists within the secondary bedrock porosity along joints, foliation planes,
and fractures and within the intergranular porosity of overlying saprolite and overburden.
Beneath and in the immediate vicinity of the Site, the water table is within the bedrock.
To the northeast and southwest of the Site (lower elevation), the water table is within the
overburden and saprolite. The highest groundwater potentiometric surface elevations are
measured north of the Site. The groundwater potentiometric surface decreases in elevation
away from the Site to the northeast and southwest, converging at lower elevations
corresponding to the drainage valleys. The aquifer is characterized by anisotropy
corresponding to the structural orientation of the bedrock foliation. The distribution of
hydraulic conductivity across the area of investigation forms an elongate northeast-
southwest trending pattern with a core of greater hydraulic conductivity decreasing to
lesser hydraulic conductivity at the periphery. The September 2008 potentiometric
surface map is included as Figure 2. Monthly potentiometric surface maps have
been submitted in quarterly reports.
2.2.2 Nature and Extent of Constituents of Concern
The findings of the PHACAR and subsequent assessment and monitoring activities as
they relate to the historic distribution of gasoline and gasoline constituents within the
subsurface in the vicinity of the Site are summarized below.
Liquid phase hydrocarbon migration occurred along a linear trend (i.e. the strike line) to
the southwest and northeast away from the Site. The strike line trend is slightly off-set and
follows a slightly different orientation to the southwest and northeast, which is attributable to
the structural trend of the bedrock and the nature of the geologic contact between the
schist and epidote-amphibolite gneiss.
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The farthest extent of measurable LPH to the southwest was gauged at MW-72
(approximately 350 feet from the Site). The farthest extent of measurable LPH to the
northeast was gauged at MW-77A (approximately 1,200 feet from the Site). LPH
migration beyond these two locations has not been observed. Additionally, as a result of
remediation activities, LPH has not been observed in any monitoring wells since August
2006, with the exception of an observation of 0.01 foot in onsite monitoring well MW-27 in
May 2008.
Dissolved phase hydrocarbon migration also occurred to the southwest and northeast in
an elongate pattern that is generally consistent with the strike line and the direction of
decreasing potentiometric surface elevations. Using MTBE as an indicator, the extent of
the dissolved-phase plume has been delineated to less than the MDE action level of 20
micrograms per liter (µg/L) in the northeast and southwest for “A,” “B,” and “C” series
monitoring wells, based on August 2008 groundwater monitoring analytical results
presented in Figures 3 and 4, respectively. This delineation is also supported by two
rounds of discrete (Hydrasleeve®) groundwater sampling results associated with “C”
series wells that in part comprise the expanded monitoring well network. The expanded
monitoring well network is documented in the letter report: Expanded Monitoring Well
Network Installation – Phases I/II, dated April 18, 2008. The discrete groundwater
sampling events were conducted on July 20 and 23, 2008 and September 11 and 12,
2008, and reported to MDE on August 15, 2008 and November 14, 2008, respectively
Of the 282 private supply wells that have been sampled as part of this study, 12 have had
detections of gasoline-related compounds above MDE action levels. A total of 14
properties have had point of entry treatment (POET) systems connected to their supply
wells. At present, there are a total of three properties that have detections of gasoline
compounds above MDE action levels (each of which has a POET system in place). Area
private supply wells and POET systems continue to be sampled according to an MDE-
approved schedule.
Inactive Exxon Service Station # 28077
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Soil vapor monitoring has been conducted at locations determined by the MDE, as
detailed in the Scope of Work for Soil Vapor Sampling and Analysis that was submitted
to the MDE on March 30, 2006. Soil vapor sampling was initially conducted on a
monthly basis. Based upon the evaluation of data presented in the Soil Vapor Sampling
and Analysis Reports, the MDE approved a proposal dated April 29, 2008 to reduce the
soil vapor sampling frequency from monthly to quarterly. The soil vapor sample results
do not indicate that the vapor intrusion pathway is a concern for properties in the area
being monitored.
Periodic sampling of surface water features demonstrate that these water bodies have not
been adversely affected by the release at the Site.
3.0 Remediation Activities Completed
Remedial activities began as a response to the detection of LPH in onsite monitoring
wells on February 17, 2006. Remediation activities at the site and surrounding
properties have been conducted according to the MDE-approved Interim Remedial
Measures (IRM) Plan dated March 27, 2006 and the Updated Interim Remedial
Measures Plan dated September 25, 2006. Upgrades and modifications to the remedial
systems and remedial activities, completed since the September 25, 2006 Updated IRM
Plan, have been approved by the MDE and are summarized in the Quarterly
Groundwater Monitoring and Remedial Status Reports. A summary of remediation
activities completed to date is provided in the following sections.
3.1 Initial Response
Initial response activities consisted of three general facets that were implemented in
parallel and concurrent fashion: 1) Site characterization activities (described above); 2)
remediation of impacted media identified through site characterization activities; and 3)
protective measures (private supply well sampling and bottled water delivery).
Remediation activities and protective measures are described in the following
paragraphs.
Inactive Exxon Service Station # 28077
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The initial remedial response began on February 17, 2006 following detection of LPH in
two existing onsite monitoring wells. Remediation began using vacuum trucks to extract
LPH and groundwater from these two existing onsite wells. On February 18, 2006,
installation of additional onsite monitoring wells began. As additional onsite monitoring
wells were installed and found to contain LPH, remediation activities were expanded.
Additional mobile remediation equipment was deployed including up to three vacuum
trucks and up to two internal combustion engine (ICE) units. Beginning on February 25,
2006, pneumatic pumps were brought online for recovery of total fluids into fractioning
tanks (frac tanks) located on the Site. The contents of the frac tanks were transported
offsite to a treatment and disposal facility daily.
Remediation activities were expanded to the southwest and northeast of the Site.
Remediation activities were initiated in monitoring wells on surrounding properties in the
southwest and northeast quadrants on March 2, 2006, and March 6, 2006, respectively.
Frac tanks were installed on 3410 Sweet Air Road for temporary storage of total fluids
recovered from monitoring wells in the northeast quadrant.
As a protective measure, and concurrent with ongoing investigation and remediation
activities, sampling of area private supply wells began on February 20, 2006, and
delivery of bottled water to residences and businesses began on February 23, 2006.
The private supply well sampling area (and bottled water delivery area) expanded and
evolved as the investigation progressed under the direction of the MDE. Throughout this
initial stage of remediation, status updates were provided to the MDE which listed the
different types of remediation activities that were being conducted on the individual
monitoring wells, in addition to summarizing investigation activities and area private
supply well sampling.
On March 6, 2006, a Flame Oxidizer 750 soil vapor extraction (SVE) system was
deployed to the Site to recover vapor phase hydrocarbons from soils above the water
table. The unit extracted vapors from onsite and offsite monitoring wells and treated the
vapors through a flame oxidizing unit. Additional SVE units were also mobilized to the
Site and installed for increased recovery of hydrocarbons from the vadose zone. By
March 26, 2006, three additional SVE units were online on the Site and installation of
additional SVE units was being planned for use in the northeast quadrant. On March 27,
2006, the IRM Plan was submitted to the MDE which described activities completed to
date in more detail.
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3.2 UST Removal
Four USTs, a canopy and dispenser islands were located on the east side of the Site.
The USTs included two 8,000-gallon gasoline USTs, one 12,000-gallon gasoline UST,
and one 10,000-gallon diesel UST. A&A Environmental/Permafix cleaned and vented
the USTs and product lines on February 19, 2006. Activities associated with UST
system removal were performed between March 4 and April 10, 2006 by Petroleum
Services and Installation (PSI), including removal of the USTs, dispensers, product
piping, vapor recovery piping, vent piping and surrounding soils under the direction of
the MDE. Approximately 1,150 tons of soil was removed and transported offsite for
disposal at the Soil Safe Inc. Brandywine, Maryland facility. Soil samples were collected
during UST system removal and soil excavation activities as detailed in the Tank
Excavation Assessment Report dated April 28, 2006. Prior to backfilling the UST
excavation, six 12-inch diameter galvanized steel casings were installed at different
locations to facilitate installation of monitoring wells within the former UST field at a later
date. Two horizontal well screens were also installed in the former UST field at depths
of approximately 14 feet and 17 feet below ground surface (bgs), and connected to solid
PVC risers brought to ground surface to facilitate potential future remediation activities.
The locations of the former UST field and the horizontal screens are shown on Figure 5.
3.3 Interim Remedial Activities
From March 27, 2006 through September 25, 2006, remediation activities continued on
the Site and surrounding properties, generally as outlined in the IRM Plan, with
additional expansion and equipment modifications to allow for optimization of recovery
and transitions to equipment suited for longer-term remediation. The continuing
remediation activities and modifications were described in site status updates submitted
to the MDE, and the Updated Interim Remedial Measures Plan dated September 25,
2006. Starting with the First Quarter 2007, remediation activities and system
modifications have been described in the Groundwater Monitoring and Remedial Status
Reports, which are submitted to the MDE on a quarterly basis.
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In addition to the remedial activities summarized in sub-sections 3.1 and 3.2 above,
interim remediation activities expanded over time to include the following:
o Recovery of LPH, groundwater and soil vapor (or a combination thereof) from up
to 88 wells on 15 properties.
o Operation of up to 15 different SVE / Dual Phase Extraction (DPE) units at
various times, on up to six properties. To optimize recovery, SVE/DPE units
were relocated and upgraded as different units and access became available.
o Vapors recovered from SVE and DPE systems were initially treated by flame and
thermal oxidation, which later transitioned to catalytic oxidation and vapor phase
granulated activated carbon (VGAC), as influent concentrations decreased. By
May 31, 2007, the transition solely to VGAC units for treatment of recovered
vapor was complete as oxidizer units were taken offline.
o Temporary groundwater treatment equipment was brought online for onsite
treatment of recovered groundwater and discharge to surface water beginning
May 10, 2006. Additional temporary groundwater treatment units were brought
online in the southwest and northeast, and by September 25, 2006 all recovered
water was treated with equipment located onsite and on 3418 Sweet Air Road.
Groundwater recovered in the southwest quadrant was treated onsite and
effluent was sampled to confirm compliance with the NPDES permit prior to
discharging to the southwest surface water outfall shown on Figure 5.
Groundwater recovered in the northeast quadrant was treated on 3418 Sweet Air
Road and effluent was sampled to confirm compliance with the NPDES permit
prior to discharging to the northeast surface water outfall shown on Figure 5.
o By February 5, 2007, the groundwater treatment system was being operated in
its current overall configuration after installation of 10 two-inch HDPE pipes
encased within a 12-inch HDPE conduit was completed via horizontal directional
drilling (HDD) under Routes 145 and 146 to connect equipment on 3418 Sweet
Air Road to the Site. This allowed for centralized groundwater treatment
including a combination of air stripping, a fluidized bed bioreactor, and liquid
phase granular activated carbon. This also allowed for the removal of various
temporary treatment equipment components. The piping within the HDD conduit
is used to convey recovered groundwater, treated effluent, air to power all
pneumatic pumps, and fiber optic cables for communication between system
components in the southwest and northeast quadrants.
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The current remediation system is described in the Third Quarter Groundwater
Monitoring and Remedial Status Report, and summarized below. The layout of the
system as depicted on Figure 5, and the remediation wells as listed in Table 1 of this
CAP are current through December 23, 2008.
o Operation of six independent soil vapor extraction units, three connected
to wells located on properties in the southwest quadrant (14258
Jarrettsville Pike, 3313 Papermill Road, 14217 Robcaste Road, 14219
Robcaste Road, and 14223 Robcaste Road), and three connected to
wells located on properties in the northeast quadrant (14301 Jarrettsville
Pike, 14307 Jarrettsville Pike, 3501 Hampshire Glen Court, 3503
Hampshire Glen Court, 3506 Hampshire Glen Court, 3508 Hampshire
Glen Court, 3600 Hampshire Glen Court, 3605A Southside Avenue, and
3605B Southside Avenue). Recovered vapors are treated with VGAC on
properties owned by ExxonMobil prior to discharge in accordance with
MDE permits. The SVE systems are used for recovery of vapor phase
gasoline constituents.
o Operation of electric or pneumatic submersible pumps in monitoring wells
on 15 properties for groundwater recovery along the strike line in the
northeast and southwest quadrants. The pumps are operated to maintain
hydraulic capture and recover dissolved phase petroleum hydrocarbon
constituents.
o Recovered groundwater is conveyed to the Site and treated through an
integrated groundwater treatment system which includes a bioreactor, air
strippers, and carbon filtration. Treated water is conveyed to surface
water outfalls in both the southwest and northeast quadrants for
discharge at rates proportional to recovery from each respective
quadrant. The discharge is monitored via weekly sampling in accordance
with MDE permits.
o Monitoring of constituents of concern in both monitoring wells and private
supply wells is conducted on a regular schedule as directed by MDE.
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4.0 Current Remedial Activities
This section presents a detailed discussion of the current remediation systems, which
were summarized in the previous section.
4.1 System Design
In addition to Figure 5, which shows the layout of remediation system components on
the Site and surrounding properties, process flow diagrams providing an overview of the
remediation system process streams and equipment are attached as Figures 6 through
8. Specific design aspects of the main components of the remediation systems are
described in the following sections.
4.1.1 Extraction Well Layout and Construction
Recovery activity is currently conducted on up to 88 monitoring wells (extraction wells),
which are generally located along the strike line, as shown on Figure 5. Construction of
these wells varies, and is summarized on Table 1, with diameters ranging from 2 to 6
inches, and total depths ranging from 10 feet to 98 feet below ground surface.
Extraction wellheads are connected to subsurface remediation lines, including SVE
piping, pneumatic air supply hoses and groundwater return hoses which are connected
to the pumps. Wellheads are also equipped with valves, sample ports and
instrumentation to allow for control and monitoring of operating pressures, flows and
concentrations at each individual well.
4.1.2 Vapor Phase Hydrocarbon Recovery
Vapor phase hydrocarbon recovery is performed using six soil vapor extraction units,
each with the capacity for use as dual phase extraction units with minimal modification.
Two of the six systems are currently used for DPE; the DPE Claw in the southwest and
the ESD Dual Claw in the northeast. The six SVE/DPE systems are numbered to
correspond to equipment locations shown on Figure 5. SVE/DPE wells are listed on
Table 1.
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Each system is summarized below:
Southwest SVE / DPE Systems
ESD Tri-Lobe (1) – This SVE system extracts vapors from onsite extraction wells.The extracted vapors are treated with vapor phase granular activated carbon.
Bisco Dual Claw (3) – This SVE system extracts vapors from extraction wells locatedon the Site, 3313 Papermill Road, 14217 Robcaste Road, and 14223 RobcasteRoad. The extracted vapors are treated with vapor phase granular activated carbon.
MLE DPE Claw (4) – This high vacuum DPE system extracts soil vapors andgroundwater from onsite extraction wells. The extracted vapors are treated withvapor phase granular activated carbon.
Northeast SVE / DPE Systems
ESD Dual Claw Skid I (6) – This SVE system extracts vapors from extraction wellslocated on 14307 Jarrettsville Pike, 3501 Hampshire Glen Court, 3503 HampshireGlen Court and 3506 Hampshire Glen Court. The extracted vapors are treated withvapor phase granular activated carbon.
ESD Dual Claw (8A) – This SVE system extracts vapors and groundwater fromextraction wells on 14301 Jarrettsville Pike and 14307 Jarrettsville Pike. Theextracted vapors are treated with vapor phase granular activated carbon.
NE Bisco Dual Claw (8B) – This SVE system extracts vapors from extraction wellson 3506 Hampshire Glen Court, 3508 Hampshire Glen Court, and 3600 HampshireGlen Court. The extracted vapors are treated with vapor phase granular activatedcarbon on 3418 Sweet Air Road.
SVE system operating data are presented in the Quarterly Groundwater Monitoring and
Remedial Status Reports. Influent vapor to each system is controlled manually at the
individual wellheads by ball valves situated below grade within each well vault. Each
SVE well is connected to an underground HDPE trunk line for each individual SVE
system. Additional subsurface HDPE lines and junctions are installed which allow for
flexibility to redirect SVE wells to different SVE systems, if warranted. Each individual
SVE system includes variable speed drive motors on the SVE blowers, valves, sample
ports, and instrumentation for control and monitoring of operating pressures, flows and
concentrations. Off-gas from each SVE system is directed through vapor phase
granulated activated carbon units prior to discharge in compliance with the MDE Air and
Radiation Management Administration (ARMA) general permit for Soil Vapor Extraction
Systems as described in Section 6.2. When acting as a DPE unit, the recovered liquids
are pumped into a manifold located in the inactive service station building and directed
into the groundwater treatment system.
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Each SVE system includes interlocks which shut down the SVE system on various alarm
conditions, including high temperature, high sump levels, and low vacuum. SVE system
operation and alarm status is monitored remotely via a supervisory control and data
acquisition (SCADA) system. The SCADA system is connected to an auto-dialer which
notifies system operators by telephone of any alarm conditions, 24 hours per day, seven
days per week. Upon notification of an alarm condition, system operators log on to the
SCADA system remotely to view system status and address conditions, as appropriate.
4.1.3 Groundwater Recovery and Treatment
Groundwater recovery is being conducted at monitoring wells, as listed on Table 1 to
maintain hydraulic capture and recover dissolved phase hydrocarbon constituents. In
addition to the submersible pumps, the pumping system includes primary and secondary
air compressors, pneumatic air lines, water return piping, and water storage,
conveyance and treatment equipment. Recovered groundwater accumulates in frac
tanks located on the Sweet Air Road property and the Site. The groundwater is then
treated onsite, as described in Section 4.1.3.1, and discharged in accordance with the
NPDES permit, described in Section 6.1.
Recovered groundwater from the northeast quadrant is held in influent frac tanks on
3418 Sweet Air Road prior to being pumped to the Site for treatment. Recovered
groundwater from the southwest quadrant is held in influent frac tanks on the Site prior
to treatment. At the Site, recovered groundwater from both the northeast and southwest
quadrants is directed through a manifold to either a fluidized bed bioreactor or an air
stripper system for treatment. Water from each treatment train is then pumped through
liquid-phase granular activated carbon, and into an effluent equalization tank. The
treated water is then pumped from the effluent equalization tank and discharged
proportionally according to the recovery rates from both the southwest and the northeast
areas. The northeast portion of treated water is pumped back across the intersection for
discharge to the northeast outfall and the southwest portion of treated water is
discharged to the southwest outfall as depicted on Figure 5.
Inactive Exxon Service Station # 28077
Copyright 2009 Kleinfelder East, Inc. Page 15 of 19 January 2009All Rights Reserved
Groundwater recovered from monitoring wells is directed to different treatment trains
based on monthly concentration and flow data, with generally the highest concentration
zones being directed to the bioreactor, up to a maximum total influent flow rate of 30
gallons per minute. If recovered flow rates for the combined bioreactor influent stream
exceed the maximum allowable rate for the bioreactor, an automatic motor operated
valve (MOV) transfers excess flow into an air stripper treatment system. Lower
concentration groundwater recovery zones are typically directed to a second air stripper
treatment system. The bioreactor stream consists of particulate bag filters, an influent
sump with nutrient feed and pH adjustment, a fluidized bed designed for upflow of
process water through the biomedia, and a treated water sump where re-oxygenation
occurs. The air stripper treatment systems include influent equalization/aeration tanks
for precipitation and settling of dissolved solids, particulate bag filters for removal of
suspended solids prior to the air stripper, and an air stripper for removal of volatile
organic compounds from the groundwater. Air stripper and aeration tank off-gas is
treated with VGAC units prior to discharge in accordance with MDE permit conditions.
Subsequent to treatment, all liquid streams are pumped through three dedicated 2,000-
pound liquid granulated activated carbon (LGAC) vessels for polishing prior to discharge
to the effluent equalization tank. The treated groundwater is then discharged in
accordance with the NPDES permit, described in Section 6.1.
Groundwater extraction and treatment system equipment are integrated with a
programmable logic control (PLC) system and fail-safes. The fail-safes include
interlocks which shut down the groundwater extraction and treatment equipment on
various alarm conditions, including high sump and tank levels, high pressures and low
air stripper pressures. System operations are monitored and controlled remotely via the
SCADA system, which is connected to an auto-dialer which notifies system operators by
telephone of any alarm conditions, 24 hours per day, seven days per week. Upon
notification of an alarm condition, system operators log on to the SCADA system
remotely to view system status and address conditions, as appropriate.
Inactive Exxon Service Station # 28077
Copyright 2009 Kleinfelder East, Inc. Page 16 of 19 January 2009All Rights Reserved
5.0 Proposed Activities
5.1 Proposed System
The remediation goal is to return groundwater to conditions that are protective of public
health and the environment or achieve contamination levels at or below the
Department’s current groundwater standards and action levels where possible as
determined by the Department. Based on the results that have been achieved with the
current system, it is proposed to continue operation of the current soil vapor extraction,
groundwater recovery and treatment systems. The proposed activities included in this
CAP are proven technologies which are currently being implemented with positive
results. Routine monitoring is conducted to evaluate progress, and includes monitoring
groundwater quality and potentiometric surface elevations, as well as remediation
system influent and effluent hydrocarbon concentrations. These data are presented in
quarterly reports and discussed with the MDE at periodic technical review meetings. To
the extent warranted, any modifications are presented to the MDE for its review and
approval prior to implementation.
5.2 Potential Enhancements
Kleinfelder has and continues to evaluate ways to enhance and optimize the existing
remediation system. Supplemental remedial measures may be proposed by EMES or
may be required by the MDE. One of the primary purposes for implementation of
supplemental remedial measures is to expedite achievement of the above-noted
remedial goals. A key pre-requisite for any EMES proposed supplemental remedial
measure will be a determination that the proposed supplemental work will not interfere
with or minimize the effectiveness of the existing remedial measures as described in this
CAP. Proposed supplemental remedial activities will only be conducted with approval
from the MDE and in accordance with approval conditions established by the MDE.
Inactive Exxon Service Station # 28077
Copyright 2009 Kleinfelder East, Inc. Page 17 of 19 January 2009All Rights Reserved
6.0 Permit Identification
Remediation activities are being conducted in compliance with the appropriate operating
permits required by the State of Maryland. Permits will be renewed as necessary, and
additional permits will be obtained as required if additional remediation activities are
proposed in the future. Current permitted activities are summarized in the following
sections.
6.1 Surface Water Discharge
The recovered groundwater is treated and discharged to surface water tributaries
located to the northeast and the southwest of the Site in accordance with the current
National Pollutant Discharge Elimination System (NPDES) modified General Discharge
Permit No. 2008-OGR-9826 (MDG919826) which was issued by the Maryland
Department of the Environment on February 14, 2008. The General Discharge Permit
expires on December 12, 2012, and a renewal application is to be filed at least 180 days
prior to the expiration. Results of NPDES permit required monitoring are submitted to
the MDE in quarterly Discharge Monitoring Reports, as required.
6.2 Off-gas Vapor Emissions
Vapor emission point sources (SVE treatment units and air stripper off-gas) are operated
in compliance with the MDE Air and Radiation Management Administration ARMA
General Permit for SVE and Groundwater Air Strippers. Emissions from each point
source are currently below the permit thresholds listed below:
Parameter Permit Limit
Total VOC 20 lbs/day
Benzene 0.02 lbs/hr
Despite operation below these permit limits prior to off-gas treatment, vapor emissions
from the SVE blowers and air strippers will continue to be treated through vapor phase
granular activated carbon units prior to discharge to the atmosphere. Vapor emission
point sources will continue to be evaluated to determine whether the potential emissions
warrant an air permit.
Inactive Exxon Service Station # 28077
Copyright 2009 Kleinfelder East, Inc. Page 18 of 19 January 2009All Rights Reserved
6.3 Water Appropriations
Water Appropriation and Use Permits BA2006G103(01) and BA2006G003(02) were
issued (after public notice and comment) by the MDE Water Management Administration
with an effective date of June 1, 2008. The combined maximum average withdrawal
granted by the supplemental permits is 58,000 gallons per day on an annual basis and
84,100 gallons per day during the month of maximum use. Water can be drawn from a
total of 100 wells as stipulated in the two permits. The permits expire on June 1, 2010,
and a renewal application is to be filed at least 45 days prior to the expiration. Data are
submitted to the MDE Water Management Administration, as required.
7.0 Monitoring and Sampling
Monitoring of remediation activities is ongoing and will continue in order to maintain
compliance with operating permits, confirm proper operation and maintenance of system
components, optimize system performance, and evaluate remediation progress. Permit-
required monitoring and reporting will be conducted to maintain compliance with the
operating permits listed in Section 6 of this CAP.
Groundwater concentrations and potentiometric surface elevations will be monitored
according to the MDE-approved schedule in order to evaluate remediation progress.
The groundwater monitoring schedule is detailed in the February 28, 2008 Future
Sampling Proposal – Groundwater Monitoring Well Network plan and the MDE’s May 20,
2008 approval letter, and generally includes monthly gauging of most monitoring wells,
monthly sampling of select monitoring wells, quarterly or semi-annual sampling of the
remaining wells, and quarterly sampling of surface water. Additionally, area private
supply wells are generally sampled on monthly, quarterly, and semi-annual schedules,
as directed by the MDE. Monitoring well and private supply well sampling results are
reported to the MDE quarterly.
Both the groundwater and soil vapor extraction systems’ influent streams are also
monitored for influent petroleum constituent concentrations and flow rates to optimize
effectiveness of recovery and treatment equipment, and to gauge the overall progress of
remediation activities. Remediation system data are summarized in the quarterly
Groundwater Monitoring and Remedial Status Reports.
Inactive Exxon Service Station # 28077
Copyright 2009 Kleinfelder East, Inc. Page 19 of 19 January 2009All Rights Reserved
Additional data are collected from remediation equipment to monitor the mechanical
components for proper operation and to confirm preventative maintenance needs, as
recommended by the equipment manufacturers.
8.0 Proposed Implementation Schedule
The system as described in this CAP has been implemented. Remediation activities will
continue as outlined in this CAP until directed otherwise by the MDE, pending receipt of
comments from the MDE on this Corrective Action Plan. In the event EMES believes
supplemental remedial activities are necessary, such activities will only be conducted
with written approval from the MDE and in accordance with approval conditions
established by the MDE. Any proposal to conduct supplemental remedial activities will
include a proposed schedule for MDE’s review and approval.
MW-9
MW-8 MW-7
MW-6MW-5MW-4
MW-2
MW-1
PW-01
MW-93
MW-92
MW-94
MW-95
MW-91
MW-90
MW-89
MW-88
MW-87
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MW-154
MW-155MW-156
MW-161
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MW-149
MW-147
MW-84P
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MW-146
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MW-142
MW-56B
MW-30P
MW-96B
MW-139
MW-138
MW-137
MW-136
POND01
MW-33P
MW-78B
MW-130
MW-98B
MW-80B
MW-110
MW-88P
MW-76P
MW-109
MW-83R
MW-87P
MW-86P
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MW-77R
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MW-57P
MW-106
MW-103 MW-104
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MW-78A
MW-80AMW-77A
MW-99A
MW-102
MW-98A
MW-96A
MW-41C
MW-56C
MW-62A
MW-61BMW-61AMW-59B
MW-59A
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MW-48AMW-48B
MW-43A
MW-43B
MW-47BMW-47A
MW-42BMW-42A
MW-41BMW-41A
MW-53BMW-53A
MW-107
MW-108
MW-78R
MW-127
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MW-117MW-112
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MW-38P
MW-36P
MW-157P
PW-3501
MW-153B
MW-153A
MW-150BMW-150A
MW-148B
MW-148A
MW-145P
MW-141A
MW-134B
MW-140A MW-140B
MW-135A
MW-135B
MW-134A
MW-132B
MW-131B
MW-133A
MW-131A
MW-128B
MW-129B
MW-129A
MW-128A
MW-101BMW-101A
PW-14311
STREAM04
STREAM03
STREAM02
STREAM01
MW-78C(60-70)
MW-3
MW-14
MW-10
MW-159
MW-151MW-144
MW-34P
MW-59D
MW-77B
MW-99B
MW-62B
MW-56A
MW-27PMW-13P
MW-58P
MW-37P
MW-118
MW-116
MW-158P
MW-141BMW-141C
MW-132A
MW-133B
MW-100BMW-100A
MW-147PCMW-147PAMW-147PB
MW-93B
MW-93C
MW-165C
MW-92AMW-92C
MW-166AMW-166B
MW-164B
MW-42C
MW-95BMW-131C
MW-166C
MW-27RMW-16R
MW-50B
MW-128C
MW-163B
MW-162CMW-162B
MW-162A
MW-45R
3499SWEET AIR
3500SWEET AIR
3430SWEET AIR
3612JACKSON CABIN
14335JARRETTSVILLE
14414KATIE
3320PAPER MILL
3605DSOUTHSIDE
14210ROBCASTE
14217ROBCASTE
14330JARRETTSVILLE
14223ROBCASTE
3605ASOUTHSIDE
14406KATIE
14315JARRETTSVILLE
14208ROBCASTE
3224PAPER MILL
14412KATIE
14225ROBCASTE
14303ROBCASTE
14219ROBCASTE
14408KATIE
14221ROBCASTE
14214ROBCASTE
14302ROBCASTE
14305ROBCASTE
3422SWEET AIR
14403KATIE
3313PAPER MILL
3606HAMPSHIRE GLEN
3235PAPER MILL
14405KATIE
14209ROBCASTE
14215ROBCASTE
3605BSOUTHSIDE
3605CSOUTHSIDE
14213ROBCASTE
3525SOUTHSIDE
14206ROBCASTE
14211ROBCASTE
3312 and 3314PAPER MILL
3506SWEET AIR
3609HAMPSHIRE GLEN
3604HAMPSHIRE GLEN
3610HAMPSHIRE GLEN
3611JACKSON CABIN
3527SOUTHSIDE
3627SOUTHSIDE
14410KATIE
14227JARRETTSVILLE
3605SOUTHSIDE
3418SWEET AIR
3609JACKSON CABIN
3440SWEET AIR
14205ROBCASTE
3611SOUTHSIDE
3300PAPER MILL
14300ROBCASTE
3301PAPER MILL
3600HAMPSHIRE GLEN
3500HAMPSHIRE GLEN
3305PAPER MILL
3606JACKSON CABIN
3616JACKSON CABIN
3510HAMPSHIRE GLEN
3602HAMPSHIRE GLEN
14222JARRETTSVILLE
3602JACKSON CABIN
3306PAPER MILL
14207ROBCASTE
3612HAMPSHIRE GLEN
JACKSON CABIN
3512SWEET AIR
14209JARRETTSVILLE
3607JACKSON CABIN
3604JACKSON CABIN
3502HAMPSHIRE GLEN
3607HAMPSHIRE GLEN
3501HAMPSHIRE GLEN
3504HAMPSHIRE GLEN
14243JARRETTSVILLE
SWEET AIR
14307ROBCASTE
3601JACKSON CABIN
14214JARRETTSVILLE
3605JACKSON CABIN
3603JACKSON CABIN
14351HAMPSHIRE KNOB
3610JACKSON CABIN
3608JACKSON CABIN
14307JARRETTSVILLE
3608HAMPSHIRE GLEN
3614HAMPSHIRE GLEN
14352HAMPSHIRE KNOB
3526SWEET AIR
3506HAMPSHIRE GLEN
14308ROBCASTE
3503HAMPSHIRE GLEN
3505HAMPSHIRE GLEN 3603
HAMPSHIRE GLEN
3605HAMPSHIRE GLEN
3508HAMPSHIRE GLEN
14301JARRETTSVILLE
3507HAMPSHIRE GLEN
14240JARRETTSVILLE
14355HAMPSHIRE KNOB
3615SOUTHSIDE
3226PAPER MILL
14232JARRETTSVILLE
14228JARRETTSVILLE
3627ASOUTHSIDE
JARRETTSVILLE
14200ROBCASTE
14212JARRETTSVILLE
3413SWEET AIR
3410
SWEE
T AIR
3501SWEET AIR
3620JACKSON CABIN
3618JACKSON CABIN
14202JARRETTSVILLE
14311JARRETTSVILLE
14345JARRETTSVILLE14306
ROBCASTE
3530SWEET AIR
ROBCASTE
14231JARRETTSVILLE
3615JACKSON CABIN
3411SWEET AIR
3510SWEET AIR
1424
2JA
RRET
TSVI
LLE
3219
PAPE
R MI
LL
3518SWEET AIR3617JACKSON CABIN
14320JARRETTSVILLE
1441
6KA
TIE
1430
0JA
RRET
TSVI
LLE
14258JARRETTSVILLE
14304ROBCASTE
14204ROBCASTE14202ROBCASTE
3505SWEET AIR
14407KATIE
3608SWEET AIR
3529SOUTHSIDE
14342JARRETTSVILLE
PAPER MILL ROAD
ROBC
ASTE
ROA
D
JARR
ETTS
VILLE
PIKE
SWEET AIR ROAD
KATIE ROAD
HAMPSHIRE GLEN COURT
JARR
ETTS
VILLE
PIKE
ROBCASTE ROAD
HAMPSHIRE KNOB DRIVE
JACKSON CABIN ROAD
www.kleinfelder.com
SITE PLANAS OF DECEMBER 23, 2008
INACTIVE EXXON FACILITY #2807714258 JARRETTSVILLE PIKE
PHOENIX, MARYLANDBALTIMORE COUNTY
8840710/21/08B. Myers
S. Rochford
Fig1 Site Plan 052708.mxd
1The information included on this graphic representation has been compiled from a variety of sources and is subject to change without notice. Kleinfelder makes no representations or warranties, express or implied, as to accuracy, completeness, timeliness, or rights to the use of such information. This document is not intended for use as a land survey product nor is it designed or intended as a construction design document. The use or misuse of the information contained on this graphic representation is at the sole risk of the party using or misusing the information.
1340 Charwood Road, Suite IHanover, Maryland 21076t | 866.862.9760f | 410.850.0049
FIGUREPROJECT NO.DRAWN:DRAWN BY:CHECKED BY:FILE NAME:
LegendRecovery ActivityMonitoring OnlyAbandoned Monitoring WellPotable WellSurface Water SampleBuilding FootprintProperty Boundary (Approx.)Roads_and_Parking_1997Retention BasinStreamWater Body
0 120 240 360 480Feet
MW-8556.30
MW-1552.03
MW-93543.70
MW-95519.76
MW-91550.36
MW-88549.80
MW-81520.66
MW-79515.60
MW-97523.90
MW-73560.12
MW-70534.52MW-68
518.91
MW-69520.71 MW-65
524.52
MW-64525.35
MW-63525.17
MW-66524.33
MW-67524.58
MW-4A557.87
MW-54555.88
MW-50558.09
MW-46554.07
MW-44543.02
MW-39536.50
MW-20561.81
MW-15556.09
MW-14556.20
MW-3P545.54
MW-12561.01
MW-92A533.63
MW-159521.80
MW-161530.95
MW-160514.01
MW-149560.88
MW-84P547.81
MW-146566.49
MW-143545.28
MW-142542.60
MW-30P548.32
MW-139549.75
MW-138539.60 MW-136
508.99
MW-33P547.28
MW-130539.30
MW-34P549.28
MW-88P549.73
MW-76P532.31
MW-87P550.61
MW-86P550.79
MW-85P550.67
MW-57P543.55
MW-106534.12
MW-103555.79
MW-104555.97
MW-105556.47
MW-78A518.81
MW-98A518.02
MW-96A525.23
MW-62A543.43
MW-61A531.83
MW-48A538.45
MW-56A521.11
MW-42A553.53
MW-41A520.10
MW-53A520.87
MW-107559.48
MW-108567.46
MW-58P546.38
MW-125540.01
MW-122529.24
MW-45P554.85
MW-37P555.86
MW-121537.92
MW-120527.57
MW-114553.44
MW-38P556.80
MW-36P549.27
MW-162A515.75
MW-166A554.52
MW-157P520.63
MW-158P523.70
MW-153A526.27
MW-150A511.28
MW-148A573.37
MW-145P546.82
MW-141A549.68
MW-140A526.88
MW-135A540.93
MW-134A507.89
MW-132A518.28
MW-133A528.39
MW-131A514.15
MW-129A540.59
MW-128A521.85
MW-147PA520.47
MW-6P556.31
MW-27P555.98
MW-13P556.32
PAPER MILL ROAD
ROBC
ASTE
ROA
D
JARR
ETTS
VILLE
PIKE
SWEET AIR ROAD
KATIE ROAD
JARR
ETTS
VILLE
PIKE
ROBCASTE ROAD
HAMPSHIRE KNOB DRIVE
JACKSON CABIN ROAD
555
557559
553
551
549
561
547
545
563
543
541
539
535
533
537
531
529565 527
525
523
521
519
517567 515
513569 511571
519
531
547
545
541
523
547
525
555
553
539533
537
527
549
521
529
543
535
551
525
519
555
557
559
553
551
549
561
547545
563
543
541
539
535
533
537
531
529
565
527
525
523521
519
517
567
515
513
569
511
571
525
539
533
541
537535
523
553
545
543
551
529531
555
527
547
549
519
521
www.kleinfelder.com
POTENTIOMETRIC SURFACE MAPGAUGING EVENT: SEPTEMBER, 2008INACTIVE EXXON FACILITY #28077
14258 JARRETTSVILLE PIKEPHOENIX, MARYLANDBALTIMORE COUNTY
8840710/24/08
B. MYERSJ. Hale
Fig 4_5_6 Pontentio Sfc Maps 052108.mxd
2The information included on this graphic representation has been compiled from a variety of sources and is subject to change without notice. Kleinfelder makes no representations or warranties, express or implied, as to accuracy, completeness, timeliness, or rights to the use of such information. This document is not intended for use as a land survey product nor is it designed or intended as a construction design document. The use or misuse of the information contained on this graphic representation is at the sole risk of the party using or misusing the information.
1340 Charwood Road, Suite IHanover, Maryland 21076t | 866.862.9760f | 410.850.0049
FIGUREPROJECT NO.DRAWN:DRAWN BY:CHECKED BY:FILE NAME:
0 120 24060Feet
LegendRecovery ActivityMonitoring OnlyAbandoned Monitoring WellPotentiometric Contours (ft/msl)Building FootprintProperty Boundary (Approx.)
MW-134A507.55
Well IDGroundwater Elevation (ft/msl)
NOTE:ft/msl = FEET ABOVE MEAN SEA-LEVEL"B," "C,", "D", "R" OR PUMPING WELLS WERE NOT USED FOR POTENTIOMETRIC CALCULATIONS
MW-166C8/21/2008ND(1.0)ND(1.0)
MW-228/18/20081.0200
MW-45R8/26/20083.3879
MW-1528/18/20083.7327
MW-908/25/20081.558.8
MW-828/19/20082.12890
MW-758/19/20081997410
MW-748/19/20082886150
MW-368/28/200846.3731
MW-18/22/2008156026.8
MW-59D8/19/20081.981.6
MW-848/22/200887.67470
MW-588/19/200833.94520
MW-328/22/200815.91620
MW-1218/22/20081759270
MW-84P8/21/200839514900
MW-82R8/19/200843.03070
MW-578/19/20086.8 J1110
MW-898/19/2008ND(1.0)8.5
MW-888/21/2008ND(1.0)1.5
MW-77A8/19/20080.44 J282
MW-77B8/19/20080.44 J140
MW-768/19/2008ND(1.0)1.3
MW-548/21/2008ND(1.0)196
MW-95B8/20/2008ND(1.0)2.1
MW-1378/19/2008ND(1.0)2.1
MW-80B8/19/2008ND(1.0)3.8
MW-1108/28/200819.4 J2660
MW-77R8/19/2008ND(1.0)6.0
MW-878/22/2008ND(1.0)19.7
MW-868/21/2008ND(1.0)12.8
MW-858/22/2008ND(1.0)2130
MW-378/28/2008ND(1.0)17.7
MW-1438/21/2008ND(1.0)10.9 MW-142
8/21/2008ND(1.0)58.7
MW-59A8/25/2008ND(1.0)10.4
MW-1388/25/2008ND(1.0)ND(1.0)
MW-918/25/2008ND(1.0)0.90 J
MW-1A8/18/2008ND(1.0)0.41 J
MW-238/18/2008ND(1.0)0.65 J
MW-1038/21/2008ND(1.0)0.23 J
MW-938/22/2008ND(1.0)ND(1.0)
MW-928/20/2008ND(1.0)ND(1.0)
MW-958/20/2008ND(1.0)ND(1.0)
MW-78A8/22/2008ND(1.0)0.37 J
MW-818/20/2008ND(1.0)ND(1.0)
MW-798/18/2008ND(1.0)ND(1.0)
MW-80A8/19/2008ND(1.0)0.64 J
MW-738/27/2008ND(1.0)ND(1.0)
MW-388/21/2008ND(1.0)ND(1.0)
MW-164B8/21/2008ND(1.0)0.56 J
MW-93C8/22/2008ND(1.0)ND(1.0)
MW-93B8/22/2008ND(1.0)ND(1.0)
MW-92A8/20/2008ND(1.0)ND(1.0)
MW-92C8/20/2008ND(1.0)ND(1.0)
MW-150B8/18/2008ND(1.0)1.2
MW-1368/20/2008ND(1.0)ND(1.0)
MW-134A8/20/2008ND(1.0)0.35 J
MW-132A8/20/2008ND(1.0)0.98 J
MW-131B8/18/2008ND(1.0)1.4
MW-78B8/20/2008ND(1.0)ND(1.0)
MW-131A8/18/2008ND(1.0)1.3
MW-83R8/19/2008ND(1.0)ND(1.0)
MW-1068/15/2008ND(1.0)ND(1.0)
MW-1048/21/2008ND(1.0)ND(1.0)
MW-99B8/22/2008ND(1.0)ND(1.0)
MW-62A8/22/2008ND(1.0)ND(1.0)
MW-62B8/22/2008ND(1.0)ND(1.0)
MW-61B8/20/2008ND(1.0)ND(1.0)
MW-61A8/20/2008ND(1.0)ND(1.0)
MW-48A8/20/2008ND(1.0)ND(1.0)
MW-48B8/20/2008ND(1.0)ND(1.0)
MW-43A8/19/2008ND(1.0)ND(1.0)
MW-43B8/22/2008ND(1.0)ND(1.0)
MW-47B8/25/2008ND(1.0)ND(1.0)
MW-1078/25/2008ND(1.0)ND(1.0)
MW-1088/27/2008ND(1.0)ND(1.0)
MW-78R8/19/2008ND(1.0)ND(1.0)
MW-1148/27/2008ND(1.0)ND(1.0)
MW-162C8/18/2008ND(1.0)ND(1.0)MW-162B8/18/2008ND(1.0)ND(1.0)MW-162A8/18/2008ND(1.0)ND(1.0)
MW-133C8/22/2008ND(1.0)ND(1.0)
MW-131C8/18/2008ND(1.0)ND(1.0)
MW-166B8/21/2008ND(1.0)ND(1.0)
MW-166A8/21/2008ND(1.0)ND(1.0)
MW-165C8/20/2008ND(1.0)ND(1.0)
PW-35018/25/2008ND(1.0)ND(1.0)
MW-150A8/18/2008ND(1.0)ND(1.0)
MW-148B8/14/2008ND(1.0)ND(1.0)
MW-148A8/14/2008ND(1.0)ND(1.0)
MW-134B8/20/2008ND(1.0)ND(1.0)
MW-135A8/27/2008ND(1.0)ND(1.0)
MW-135B8/27/2008ND(1.0)ND(1.0)
MW-132B8/20/2008ND(1.0)ND(1.0)
MW-101B8/22/2008ND(1.0)ND(1.0)
MW-100B8/19/2008ND(1.0)ND(1.0)
PW-143118/27/2008ND(1.0)ND(1.0)
STREAM038/14/2008ND(1.0)ND(1.0)
MW-147PA8/20/2008ND(1.0)ND(1.0)
STREAM028/14/2008ND(1.0)ND(1.0)
MW-168/18/200826211500
MW-27R8/18/200810942700MW-151
8/18/200827.72410
MW-1398/15/200843.64850
MW-148/15/20080.51 J191
MW-278/18/20085460387000
MW-458/22/2008ND(1.0)4010
MW-16R8/18/2008ND(20)19200
MW-198/18/2008ND(1.0)0.83 J
MW-133A8/22/2008ND(1.0)ND(1.0)
MW-133B8/22/2008ND(1.0)ND(1.0)
MW-147PC8/20/2008ND(1.0)ND(1.0)
MW-147PB8/20/2008ND(1.0)ND(1.0)
3430SWEET AIR
14414KATIE
14335JARRETTSVILLE
3605DSOUTHSIDE
14345JARRETTSVILLE
3627SOUTHSIDE
3605ASOUTHSIDE
3611SOUTHSIDE
14315JARRETTSVILLE
3627ASOUTHSIDE
3615SOUTHSIDE
3608HAMPSHIRE GLEN
14412KATIE
14410KATIE
3422SWEET AIR
3610HAMPSHIRE GLEN
3606HAMPSHIRE GLEN
3605SOUTHSIDE
14408KATIE
3605BSOUTHSIDE
3605CSOUTHSIDE
14416KATIE
3525SOUTHSIDE
3612JACKSON CABIN
14418KATIE
3527SOUTHSIDE
3609HAMPSHIRE GLEN
3529SOUTHSIDE
3604HAMPSHIRE GLEN
3418SWEET AIR
3600HAMPSHIRE GLEN
3500HAMPSHIRE GLEN
3606JACKSON CABIN
3510HAMPSHIRE GLEN
3602HAMPSHIRE GLEN
14406KATIE
3602JACKSON CABIN
3612HAMPSHIRE GLEN
3604JACKSON CABIN
3502HAMPSHIRE GLEN
3607HAMPSHIRE GLEN
3501HAMPSHIRE GLEN
3504HAMPSHIRE GLEN
14409KATIE
3601JACKSON CABIN
14351HAMPSHIRE KNOB
14243JARRETTSVILLE
3608JACKSON CABIN
14307JARRETTSVILLE
3603JACKSON CABIN
3614HAMPSHIRE GLEN
14352HAMPSHIRE KNOB
3506HAMPSHIRE GLEN
3503HAMPSHIRE GLEN
3505HAMPSHIRE GLEN
3603HAMPSHIRE GLEN
3605HAMPSHIRE GLEN
3508HAMPSHIRE GLEN
3507HAMPSHIRE GLEN
14301JARRETTSVILLE
14355HAMPSHIRE KNOB
3629SOUTHSIDE
3610JACKSON CABIN
3500SWEET AIR
3617SOUTHSIDE
3499SWEET AIR
3413SWEET AIR
3410SWEET AIR
3523SOUTHSIDE
3605JACKSON CABIN
14311JARRETTSVILLE
3603SOUTHSIDE
3631SOUTHSIDE
14227JARRETTSVILLE
3613SOUTHSIDE 3633
SOUTHSIDE
3517SOUTHSIDE
14411KATIE
3531SOUTHSIDE
3411SWEET AIR
14346JARRETTSVILLE
14231JARRETTSVILLE
14407KATIE
3635SOUTHSIDE
14413KATIE
14342JARRETTSVILLE
14417KATIE
14420KATIE
14419KATIE
14258JARRETTSVILLE
3417MEREDITH RIDGE
HAMPSHIRE GLEN COURT
JARR
ETTS
VILLE
PIKE
SWEET AIR ROAD
KATIE
ROAD
JACKSON CABIN ROAD
HAMPSHIRE KNOB DRIVE
HAMP
SHIR
E KNO
B DR
IVE
JARRETTSVILLE PIKE
www.kleinfelder.com
LegendConcentrationsMTBE (µg/L)
ND(RL≤5.0) - 5.05.0 - 2020 - 200200 - 20002000 - 2000020000 - 200000200000+Not Sampled in Qtr.:Dry/InaccessibleMonitoring OnlyRecovery Activity
Groundwater Recovery ZonesZone 1Zone 2Zone 3Parcel Boundary (Approx.)Building Foot PrintsStreamsWater Bodies
Well IDSample DateBenzene (µg/L)MTBE (µg/L)
J = INDICATES AN ESTIMATED VALUEND(RL) = NOT DETECTED AT OR ABOVE THE LABORATORY REPORTING LIMIT (RL) LABORATORY REPORTING LIMIT INCLUDED
NOTES:1. MW-47A, MW-78C(60-70), MW-83 AND MW-94, MW-99A, MW-100A, MW-101A WERE DRY AT THE TIME OF SAMPLING2. MW-59B WAS NOT SAMPLED DUE TO IMMOVABLE IN-WELL REMEDIAL EQUIPMENT3. MW-15, MW-20, MW-41A, MW-41B, MW-42B, MW-47B, MW-48A, MW-48B, MW-61A, MW-62B, MW-73, MW-78A, MW-83R, MW-91, MW-92, MW-93, MW-97, MW-99B, MW-101B, MW-104, MW-106, MW-108, MW-114, MW-128A, MW-129A, MW-129B, MW-130, MW-133A, MW-133B, MW-135A, MW-135B, MW-136, MW-50A WERE REVISED TO A BI-ANNUAL SCHEDULE
GROUNDWATER RECOVERY ZONES:ZONE 1: MW-36, MW-59A, MW-59B, MW-74, MW-75,MW-76, MW-77A, MW-77B, MW-77R, MW-82,MW-82R, MW-83R, MW-89, MW-90, MW-137ZONE 2:MW-43A, MW-57, MW-58, MW-59D, MW-78A, MW-80B, MW-100B, MW-78R, MW-80AZONE 3:MW-37, MW-38, MW-45, MW-45R, MW-84, MW-85, MW-86, MW-87, MW-88, MW-110,MW-121
EAST GROUNDWATERCONCENTRATION MAP -AUGUST 2008INACTIVE EXXON FACILITY #28077
14258 JARRETTSVILLE PIKEPHOENIX, MARYLANDBALTIMORE COUNTY
8840710/24/08B. Myers
S. Rochford
Fig2 East GW Con Map 072508.mxd
3The information included on this graphic representation has been compiled from a variety of sources and is subject to change without notice. Kleinfelder makes no representations or warranties, express or implied, as to accuracy, completeness, timeliness, or rights to the use of such information. This document is not intended for use as a land survey product nor is it designed or intended as a construction design document. The use or misuse of the information contained on this graphic representation is at the sole risk of the party using or misusing the information.
FIGUREPROJECT NO.DRAWN:DRAWN BY:CHECKED BY:FILE NAME:
0 90 18045Feet
1340 Charwood Road, Suite IHanover, Maryland 21076t | 866.862.9760f | 410.850.0049
MW-128C8/26/2008ND(1.0)ND(1.0)
PAPER MILL ROAD
ROBC
ASTE
ROA
D
JARR
ETTS
VILLE
PIKE
JARR
ETTS
VILLE
PIKE
ROBC
ASTE
ROAD
PAPER MILL ROAD
MW-498/28/20081.61.2
MW-228/18/20081.0200
MW-78/18/20081010395
MW-1528/18/20083.7327
MW-1448/18/20083.5677
MW-4A8/14/20085.743.1
MW-408/28/200899.3170
MW-258/18/20088.22910
MW-138/18/200830.9133
MW-68/18/200812118600
MW-28/15/200868941200
MW-18/22/2008156026.8
MW-308/20/2008286ND(10)
MW-1268/28/200837.32920
MW-1608/28/20082.0 J1080
MW-708/15/2008ND(1.0)1.5
MW-648/19/2008ND(1.0)8.0
MW-608/29/2008ND(1.0)2.2
MW-558/29/2008ND(1.0)2.4
MW-528/18/20080.65 J29.9
MW-518/28/2008ND(1.0)1.3
MW-468/21/2008ND(1.0)8.2
MW-358/22/2008ND(1.0)2.3MW-31
8/20/20086.3ND(1.0)
MW-268/20/2008ND(1.0)4.5
MW-248/20/2008ND(1.0)2.4
MW-218/18/2008ND(1.0)1.0
MW-178/18/2008ND(1.0)2.2
MW-48/18/2008ND(1.0)32.9
MW-56B8/19/2008ND(1.0)8.5
MW-96A8/19/2008ND(1.0)5.0
MW-728/29/2008ND(1.0)65.7
MW-638/21/2008ND(1.0)13.7
MW-2A8/18/2008ND(25)25300
MW-448/21/2008ND(1.0)37.8
MW-298/20/2008ND(1.0)22.2
MW-1278/22/2008ND(1.0)2.9
MW-1228/21/2008ND(1.0)3.1
MW-1198/29/2008ND(1.0)9.6
MW-1138/29/2008ND(1.0)3.3
MW-163B8/19/2008ND(1.0)6.8
MW-157P8/21/2008ND(1.0)2.1
MW-153B8/21/2008ND(1.0)1.1
MW-153A8/21/2008ND(1.0)1.4
MW-141A8/26/20083.2ND(1.0)
MW-140B8/21/2008ND(1.0)3.4
MW-98/18/2008ND(1.0)0.73 J
MW-1188/28/2008ND(1.0)41.0
MW-718/29/2008ND(1.0)0.42 J
MW-658/19/2008ND(1.0)0.36 J
MW-668/19/2008ND(1.0)0.94 J
MW-1A8/18/2008ND(1.0)0.41 J
MW-508/21/2008ND(1.0)0.42 J
MW-288/20/2008ND(1.0)0.35 J
MW-238/18/2008ND(1.0)0.65 J
MW-198/18/2008ND(1.0)0.83 J
MW-50B8/21/2008ND(1.0)0.38 J
MW-1598/21/2008ND(1.0)0.41 J
MW-1498/21/2008ND(1.0)0.30 J
MW-50C8/21/2008ND(1.0)0.49 J
MW-141C8/26/20080.68 J0.29 J
PW-018/14/2008ND(0.50)0.38 J
MW-98B8/26/2008ND(1.0)0.38 J
MW-1098/18/2008ND(1.0)0.25 J
MW-1058/15/2008ND(1.0)0.49 J
MW-978/19/2008ND(1.0)ND(1.0)
MW-688/19/2008ND(1.0)ND(1.0)
MW-698/19/2008ND(1.0)ND(1.0)
MW-678/19/2008ND(1.0)ND(1.0)
MW-398/21/2008ND(1.0)ND(1.0)
MW-338/20/2008ND(1.0)ND(1.0)
MW-208/14/2008ND(1.0)ND(1.0)
MW-158/15/2008ND(1.0)ND(1.0)
MW-128/15/2008ND(1.0)ND(1.0)
MW-1248/29/2008ND(1.0)0.39 J
MW-1168/29/2008ND(1.0)0.29 J
MW-1128/29/2008ND(1.0)0.26 J
MW-42C8/19/2008ND(1.0)ND(1.0)
MW-1618/26/2008ND(1.0)ND(1.0)
MW-1468/14/2008ND(1.0)ND(1.0)
MW-141B8/26/2008ND(1.0)0.43 J
MW-140A8/21/2008ND(1.0)0.77 J
MW-96B8/19/2008ND(1.0)ND(1.0)
MW-1308/26/2008ND(1.0)ND(1.0)
MW-98A8/26/2008ND(1.0)ND(1.0)
MW-56A8/19/2008ND(1.0)ND(1.0)
MW-42B8/19/2008ND(1.0)ND(1.0)MW-42A8/19/2008ND(1.0)ND(1.0)
MW-41B8/19/2008ND(1.0)ND(1.0)
MW-41A8/19/2008ND(1.0)ND(1.0)
MW-53B8/19/2008ND(1.0)ND(1.0)MW-53A8/19/2008ND(1.0)ND(1.0)
MW-1258/28/2008ND(1.0)ND(1.0)
MW-1238/29/2008ND(1.0)ND(1.0)
MW-148B8/14/2008ND(1.0)ND(1.0)
MW-148A8/14/2008ND(1.0)ND(1.0)
MW-128B8/26/2008ND(1.0)ND(1.0)
MW-129B8/26/2008ND(1.0)ND(1.0)MW-129A8/26/2008ND(1.0)ND(1.0)
MW-128A8/26/2008ND(1.0)ND(1.0)
STREAM048/14/2008ND(1.0)ND(1.0)
STREAM018/14/2008ND(1.0)ND(1.0)
MW-56C(320-325)8/15/20080.36 J2.9
MW-56C(310-315)8/15/20080.30 J1.8
MW-41C(75-80)8/15/2008ND(1.0)ND(1.0)MW-41C(95-97)8/15/2008ND(1.0)ND(1.0)
MW-53C(225-235)8/15/2008ND(1.0)ND(1.0)
MW-53C(215-220) 8/15/2008ND(1.0)0.53 J
MW-168/18/200826211500
MW-38/18/2008107028000
MW-27R8/18/200810942700
MW-1518/18/200827.72410
MW-1398/15/200843.64850
MW-148/15/20080.51 J191
MW-278/18/20085460387000
MW-58/14/2008ND(1.0)31.7
MW-16R8/18/2008ND(20)19200
MW-88/14/2008ND(1.0)0.44 J
MW-1548/20/2008ND(1.0)0.49 J
MW-348/22/2008ND(1.0)ND(1.0)
MW-1208/21/2008ND(1.0)0.69 J
MW-1118/29/2008ND(1.0)0.23 J
MW-1568/29/2008ND(1.0)ND(1.0)
MW-158P8/21/2008ND(1.0)0.35 J
MW-1178/29/2008ND(1.0)ND(1.0)
MW-56C(100-110)8/15/2008ND(1.0)2.6
MW-41C(190-195)8/15/2008ND(1.0)ND(1.0)
MW-41C(120-130)8/15/2008ND(1.0)ND(1.0)
3117PAPER MILL
3115PAPER MILL
14212ROBCASTE
ROBCASTE
3320PAPER MILL
14210ROBCASTE
3217PAPER MILL
14214ROBCASTE
14204ROBCASTE
14217ROBCASTE
PAPER MILL
3219PAPER MILL
14223ROBCASTE
14202ROBCASTE
14208ROBCASTE
3121PAPER MILL
14225ROBCASTE
3499SWEET AIR
14219ROBCASTE
14221ROBCASTE
14303ROBCASTE
3235PAPER MILL
14206ROBCASTE
3313PAPER MILL
14209ROBCASTE
14215ROBCASTE
14213ROBCASTE
14211ROBCASTE
3312 and 3314PAPER MILL
3300PAPER MILL
14300ROBCASTE
3301PAPER MILL
3305PAPER MILL
14222JARRETTSVILLE
3306PAPER MILL
14330JARRETTSVILLE3224
PAPER MILL
3226PAPER MILL
14214JARRETTSVILLE
3116PAPER MILL 14302
ROBCASTE
14240JARRETTSVILLE
14232JARRETTSVILLE
14228JARRETTSVILLE
14227JARRETTSVILLE
JARRETTSVILLE
3216PAPER MILL
3206PAPER MILL
3101PAPER MILL
14243JARRETTSVILLE
3204PAPER MILL
14209JARRETTSVILLE
14205ROBCASTE
14231JARRETTSVILLE
14212JARRETTSVILLE14207
ROBCASTE
14320JARRETTSVILLE
14200ROBCASTE
14300JARRETTSVILLE
14305ROBCASTE
14258JARRETTSVILLE
14315JARRETTSVILLE
14242JARRETTSVILLE
14311JARRETTSVILLE
14307JARRETTSVILLE
3212PAPER MILL
3214PAPER MILL
3210PAPER MILL
3120PAPER MILL
14106ROBCASTE
LegendConcentrationsMTBE (µg/L)
ND(RL≤5.0) - 5.05.0 - 2020 - 200200 - 20002000 - 2000020000 - 200000200000+Not Sampled in Qtr.:Dry/InaccessibleMonitoring OnlyRecovery Activity
Groundwater Recovery ZonesZone AZone BZone CZone DDispenser IslandDPEZone EParcel Boundary (Approx.)Building Foot PrintsStreamsWater Bodies
Well IDSample DateBenzene (µg/L)MTBE (µg/L)
J = ESTIMATED VALUEND(RL) = NOT DETECTED AT OR ABOVE THE LABORATORY REPORTING LIMIT(RL) LABORATORY REPORTING LIMIT INCLUDED
NOTES:1. MW-102 WAS DRY AT THE TIME OF SAMPLING2. MW-155 WAS NOT SAMPLED DUE TO IMMOVABLE IN-WELL REMEDIAL EQUIPMENT3. STREAM04 IS AN ALTERNATE SAMPLE LOCATION FOR STREAM01 (UPGRADIENT)4. MW-15, MW-20, MW-41A, MW-41B, MW-42B, MW-47B, MW-48A, MW-48B, MW-61A, MW-62B, MW-73, MW-78A, MW-83R, MW-91, MW-92, MW-93, MW-97, MW-99B, MW-101B, MW-104, MW-106, MW-108, MW-114, MW-128A, MW-129A, MW-129B, MW-130, MW-133A, MW-133B, MW-135A, MW-135B, MW-136, MW-50A WERE REVISED TO A BI-ANNUAL SCHEDULE
GROUNDWATER RECOVERY ZONES:ZONE DISPENSER ISLAND: MW-1A, MW-2A, MW-19, MW-21, MW-22, MW-23, MW-25,MW-109, MW-151, MW-152ZONE DPE:MW-3, MW-4, MW-6, MW-7, MW-13, MW-16, MW-16R,MW-27, MW-27R ZONE A:MW-9, MW-17, MW-24, MW-26, MW-28, MW-52ZONE B:MW-29, MW-30, MW-31, MW-33, MW-34, MW-35, MW-154ZONE C:MW-40, MW-49, MW-51, MW-126, MW-127, MW-155ZONE D:MW-60, MW-102, MW-111, MW-112, MW-119, MW-123, MW-124ZONE E:MW-55, MW-71, MW-72, MW-113, MW-117, MW-116, MW-118
www.kleinfelder.com
WEST GROUNDWATERCONCENTRATION MAP - AUGUST 2008INACTIVE EXXON FACILITY #28077
14258 JARRETTSVILLE PIKEPHOENIX, MARYLANDBALTIMORE COUNTY
8840710/16/08
B. MyersS. Rochford
Fig3 West GW Con Map 072508.mxd
4The information included on this graphic representation has been compiled from a variety of sources and is subject to change without notice. Kleinfelder makes no representations or warranties, express or implied, as to accuracy, completeness, timeliness, or rights to the use of such information. This document is not intended for use as a land survey product nor is it designed or intended as a construction design document. The use or misuse of the information contained on this graphic representation is at the sole risk of the party using or misusing the information.
1340 Charwood Road, Suite IHanover, Maryland 21076t | 866.862.9760f | 410.850.0049
FIGUREPROJECT NO.DRAWN:DRAWN BY:CHECKED BY:FILE NAME:
0 90 18045Feet
MW-93
MW-92
MW-94
MW-95
MW-91
MW-90
MW-89
MW-85
MW-83
MW-82
MW-81
MW-79
MW-76
MW-75
MW-97
MW-74
MW-73
MW-72
MW-71
MW-70MW-68
MW-69 MW-65
MW-64
MW-63
MW-66
MW-67
MW-60
MW-58
MW-57MW-54
MW-55
MW-51
MW-50
MW-49
MW-46
MW-44
MW-40
MW-39
MW-38
MW-37
MW-32
MW-155MW-156
MW-161
MW-160MW-149
MW-147
MW-50C
MW-146
MW-56B
MW-96B
MW-138
MW-137
MW-136
POND01
MW-78B
MW-130
MW-98B
MW-80B
MW-76P
MW-83R
MW-85P
MW-77R
MW-82R
MW-106 MW-78A
MW-80AMW-77A
MW-99A
MW-102
MW-98A
MW-96A
MW-41C
MW-56C
MW-62A
MW-61BMW-61AMW-59B
MW-59A
MW-53C
MW-48AMW-48B
MW-43A
MW-43B
MW-47BMW-47A
MW-42BMW-42A
MW-41BMW-41A
MW-53BMW-53A
MW-107
MW-108
MW-78R
MW-127
MW-126
MW-125
MW-124
MW-123
MW-122MW-120
MW-119
MW-115
MW-117MW-112
MW-111
MW-113
MW-114
MW-38P
MW-157P
PW-3501
MW-153B
MW-153A
MW-150BMW-150A
MW-148B
MW-148A
MW-141A
MW-134B
MW-140A MW-140B
MW-135A
MW-135B
MW-134A
MW-132B
MW-131B
MW-133A
MW-131A
MW-128B
MW-129B
MW-129A
MW-128A
MW-101BMW-101A
PW-14311
MW-78C(60-70)
MW-159
MW-59D
MW-77B
MW-99B
MW-62B
MW-56A
MW-58P
MW-37P
MW-118
MW-116
MW-158P
MW-141BMW-141C
MW-132A
MW-133B
MW-100BMW-100A
MW-147PCMW-147PAMW-147PB
MW-93B
MW-93C
MW-165C
MW-92AMW-92C
MW-42C
MW-95B
MW-131C
MW-50B
MW-128C
MW-163B
MW-162CMW-162B
MW-162A
SW OUTFALL
NE OUTFALL
JARR
ETTS
VILL
E PI
KE
PAPER MILL ROAD
ROBC
ASTE
ROA
D
KATIE ROAD
JARR
ETTS
VILL
E PI
KE
SWEET AIR ROAD
HAMPSHIRE GLEN COURT
SWEET AIR ROAD
HAMPSHIRE KNOB DRIVE
PAPER MILL ROAD
JACKSON CABIN ROAD
ROBCASTE ROAD
3499SWEET AIR
3500SWEET AIR
3430SWEET AIR
14212ROBCASTE
ROBCASTE
3612JACKSON CABIN
3117PAPER MILL
14202ROBCASTE
14335JARRETTSVILLE
14106ROBCASTE
3320PAPER MILL
14210ROBCASTE
14414KATIE
3217PAPER MILL
14214ROBCASTE
14204ROBCASTE
3605DSOUTHSIDE
14217ROBCASTE
3526SWEET AIR
14330JARRETTSVILLE
3219PAPER MILL
14223ROBCASTE
3605ASOUTHSIDE
14406KATIE
3224PAPER MILL
JARRETTSVILLE
14315JARRETTSVILLE
14208ROBCASTE
14203ROBCASTE
14412KATIE
3608SWEET AIR
14225ROBCASTE
14303ROBCASTE
14408KATIE
14219ROBCASTE
3216PAPER MILL
14221ROBCASTE
14302ROBCASTE
3506SWEET AIR
14206ROBCASTE
14305ROBCASTE
3235PAPER MILL
14200ROBCASTE
14403KATIE
3422SWEET AIR
3313PAPER MILL
PAPER MILL
3606HAMPSHIRE GLEN
14209ROBCASTE
14215ROBCASTE
3605BSOUTHSIDE
3605CSOUTHSIDE
14213ROBCASTE
3525SOUTHSIDE
14405KATIE
14205ROBCASTE
3611JACKSON CABIN
3530SWEET AIR
14211ROBCASTE
14201ROBCASTE
3312 and 3314PAPER MILL
14209JARRETTSVILLE
14104ROBCASTE 14110
ROBCASTE
14202JARRETTSVILLE
3609HAMPSHIRE GLEN
3627SOUTHSIDE
3604HAMPSHIRE GLEN
3527SOUTHSIDE
3612SWEET AIR
3204PAPER MILL
3605SOUTHSIDE
14207ROBCASTE
14227JARRETTSVILLE
3418SWEET AIR
3610HAMPSHIRE GLEN
3609JACKSON CABIN
3440SWEET AIR
3611SOUTHSIDE
3226PAPER MILL
3300PAPER MILL
JACKSON CABIN
14300ROBCASTE
3301PAPER MILL
3210PAPER MILL
3600HAMPSHIRE GLEN
14258JARRETTSVILLE
3518SWEET AIR
3305PAPER MILL
3500HAMPSHIRE GLEN
3606JACKSON CABIN
3616JACKSON CABIN
3510HAMPSHIRE GLEN
14222JARRETTSVILLE
3602HAMPSHIRE GLEN
3602JACKSON CABIN
14410KATIE
3306PAPER MILL
SWEET AIR
3121PAPER MILL
3612HAMPSHIRE GLEN
3512SWEET AIR
3607JACKSON CABIN
3604JACKSON CABIN
3502HAMPSHIRE GLEN
3607HAMPSHIRE GLEN
3501HAMPSHIRE GLEN
14307ROBCASTE
3206PAPER MILL
3501SWEET AIR
3615JACKSON CABIN
3504HAMPSHIRE GLEN
14243JARRETTSVILLE
3601JACKSON CABIN
14214JARRETTSVILLE
3605JACKSON CABIN
3603JACKSON CABIN
14351HAMPSHIRE KNOB
3610JACKSON CABIN
3608JACKSON CABIN
14307JARRETTSVILLE
3614HAMPSHIRE GLEN
14308ROBCASTE
14352HAMPSHIRE KNOB
3506HAMPSHIRE GLEN
14107ROBCASTE
3615SOUTHSIDE
3503HAMPSHIRE GLEN
3505HAMPSHIRE GLEN 3603
HAMPSHIRE GLEN
3605HAMPSHIRE GLEN
3508HAMPSHIRE GLEN
14301JARRETTSVILLE
3507HAMPSHIRE GLEN
14240JARRETTSVILLE
14355HAMPSHIRE KNOB
3505SWEET AIR
3509SWEET AIR
14232JARRETTSVILLE
3617JACKSON CABIN
3511SWEET AIR
14228JARRETTSVILLE
3608HAMPSHIRE GLEN
3614SWEET AIR
3627ASOUTHSIDE
14212JARRETTSVILLE
3510SWEET AIR
3413SWEET AIR
3410SWEET AIR
3513SWEET AIR
3618SWEET AIR
14345JARRETTSVILLE
14311JARRETTSVILLE
14306ROBCASTE
3618JACKSON CABIN
3620JACKSON CABIN
14109ROBCASTE
14231JARRETTSVILLE
14105ROBCASTE
14320JARRETTSVILLE
14102ROBCASTE
14111ROBCASTE
3411SWEET AIR
14100ROBCASTE
14304ROBCASTE
14242JARRETTSVILLE
3212PAPER MILL
3214PAPER MILL
14118JARRETTSVILLE
14300JARRETTSVILLE
3529SOUTHSIDE
3622SWEET AIR
14342JARRETTSVILLE
14416KATIE
12
14101ROBCASTE 14103
ROBCASTE
www.kleinfelder.com
REMEDIATION LAYOUTAS OF DECEMBER 23, 2008INACTIVE EXXON FACILITY #28077
14258 JARRETTSVILLE PIKEPHOENIX, MARYLANDBALTIMORE COUNTY
8840712/26/08
A. Patterson
L. Schultheis
Fig7 Rem Layout 052708.mxd
5The information included on this graphic representation has been compiled from a variety of sources and is subject to change without notice. Kleinfelder makes no representations or warranties, express or implied, as to accuracy, completeness, timeliness, or rights to the use of such information. This document is not intended for use as a land survey product nor is it designed or intended as a construction design document. The use or misuse of the information contained on this graphic representation is at the sole risk of the party using or misusing the information.
1340 Charwood Road, Suite IHanover, Maryland 21076t | 866.862.9760f | 410.850.0049
FIGUREPROJECT NO.DRAWN:DRAWN BY:CHECKED BY:FILE NAME:
LegendMonitoring OnlyDual Phase Extraction (DPE)Pneumatic PumpSoil Vapor Extraction (SVE)SVE/Pneumatic PumpSVE/ElectricPotable WellSurface Water SampleAbandoned Well
GW DischargeGW Recovery PipingGW/SVE Recovery PipingSVE Recovery PipingTank FieldTank Field Piping
GW Recovery SystemSVE SystemFractionating TankLiquid Carbon FilterVapor Carbon FilterElectrical Equipment
HP2HP1MW-9
MW-8 MW-7
MW-6 MW-5MW-4
MW-3
MW-2
MW-1
PW-01
MW-87
MW-86
MW-85MW-4A
MW-2A
MW-1A
MW-54
MW-52
MW-51
MW-50
MW-49
MW-45
MW-44
MW-39
MW-35MW-34
MW-33
MW-32
MW-31
MW-30
MW-29
MW-28
MW-27
MW-26
MW-25
MW-24
MW-23
MW-22
MW-21
MW-20
MW-19
MW-18
MW-17
MW-16
MW-15
MW-14
MW-3P
MW-13
MW-12
MW-11
MW-10
MW-6P
MW-45R
MW-50B
MW-16RMW-27R
MW-154
MW-152
MW-151
MW-149
MW-50C
MW-146
MW-144
MW-30P
MW-139
MW-33P
MW-34P MW-109
MW-87P
MW-86P
MW-85P
MW-105MW-27P
MW-13P
MW-127
MW-121
MW-145P
PAPER MILL ROAD
JARR
ETTS
VILLE
PIKE
PAPER MILL ROAD
4
1
7
11
2 2
10
9A 9B17
3
518
12
MW-90
MW-88
MW-87
MW-86
MW-85
MW-84
MW-57
MW-54
MW-45
MW-36
MW-32
MW-45R
MW-84PMW-143
MW-142
MW-110
MW-88P
MW-87P
MW-86P
MW-85P
MW-57P
MW-103 MW-104
MW-45P
MW-121
MW-36P
MW-164B
MW-166B
MW-166A
MW-166C
SWEET AIR ROAD
14
6
17 16
13
8A
15
12
8B
MW-82
MW-77R
MW-82R
MW-77AMW-77B
0 140 280 420 56070Feet
Remediation Systems1. ESD Tri-Lobe Trailer2. SW Influent Tanks 3. Bisco Dual Claw SVE Trailer4. MLE DPE Claw5. SW Manifold6. ESD Dual Claw Skid I7. SW Lift Station8A. ESD Dual Claw8B. NE Bisco Dual Claw9A. Treatment Trailer #19B. Treatment Trailer #210. Effluent Equalization Tank11. Discharge Trailer12. HDD Conduit Containing - Communication Conduit - Influent Water Lines (NE) - Effluent Water Lines (NE) - Spare Lines13. NE Influent Tanks14. NE Lift Station15. NE Manifold16. Fractionating Tanks for Storage of Treated or Untreated Groundwater 17. Compressors for Pneumatic Pump18. Groundwater Treatment: Carbon Adsorbers, & BioreactorNote: Pipe and Remediation System Locations and Scale are Approximate.
Table 1Well Construction and Remediation Well Summary
Inactive Exxon Facility # 2807714258 Jarrettsville Pike
Phoenix, MDDecember 23, 2008
Page 1 of 4
Well IDBorehole Diameter
(inch)
Well Diameter
(inch)
Riser/ Casing Length (feet)
Screen Length/ Open
Interval (feet)
Total Borehole
Depth (feet)
Screen Interval
(feet below TOC)
TOC Elevation Pump Type SVE/DPE
MW-1 6 2 20 25 45 20-45 586.80MW-1A 10 6 35 20 55 35-55 586.09 Pneumatic SVEMW-2 6 2 20 30 50 20-50 588.28MW-2A 10 6 35 20 55 35-55 587.56 Pneumatic SVEMW-3 6 2 20 30 50 20-50 590.83 DPEMW-3P 6 2 30 20 50 30-50 590.09MW-4 6 2 15 35 50 15-50 588.41 Pneumatic SVEMW-4A 10 6 35 20 55 35-55 589.08MW-5 10 6 20 25 45 20-45 589.74MW-6 10 6 20 30 50 20-50 589.01 DPEMW-6P 6 2 30 20 50 30-50 590.47MW-7 10 6 20 35 55 20-55 591.79 Pneumatic SVEMW-8 8 4 25 20 45 25-45 590.75MW-9 8 4 25 25 50 25-50 589.57 Pneumatic SVEMW-10* 10 ~ ~ ~ 34.5 ~ ~MW-11* 10 ~ ~ ~ 150 ~ ~MW-12 10 4 20 15 35 20-35 587.90MW-13 8 4 25 10 35 25-35 589.30 DPEMW-13P 6 2 30 20 50 30-50 591.54MW-14 8 4 20 25 45 20-45 593.61MW-15 10 4 15 20 35 15-35 584.29MW-16 8 4 20 18 38 20-38 591.99 DPEMW-16R 10 6 45 15 60 45-60 591.89 Pneumatic SVEMW-17 8 4 25 25 50 25-50 589.14 Pneumatic SVEMW-18* 10 ~ ~ ~ 46 ~ ~MW-19 10 6 20 25 45 20-45 587.43 Pneumatic SVEMW-20 8 4 20 20 40 20-40 592.80MW-21 10 6 20 25 45 20-45 586.81 Pneumatic SVEMW-22 10 6 20 25 45 20-45 587.01 Pneumatic SVEMW-23 10 6 20 25 45 20-45 585.66 Pneumatic SVEMW-24 8 4 20 15 35 20-35 580.52 Pneumatic SVEMW-25 10 6 25 30 55 25-55 592.34 Pneumatic SVEMW-26 10 6 25 20 45 25-45 578.75 Pneumatic SVEMW-27 10 6 27 16 43 27-43 592.89 DPEMW-27P 6 2 35 20 55 35-55 592.96MW-27R 10 6 30 30 60 30-60 593.00 Pneumatic SVEMW-28 10 6 20 25 46 20-45 582.98 Pneumatic SVEMW-29 10 6 10 20 30 10-30 571.52 Pneumatic SVEMW-30 10 6 10 25 35 10-35 571.22 Pneumatic SVEMW-30P 3 1 15 15 30 15-30 564.35MW-31 10 6 10 20 30 10-30 571.92 Pneumatic SVEMW-32 10 6 30 20 50 30-50 593.09 Pneumatic SVEMW-33 10 6 10 20 30 10-30 570.80 Pneumatic SVEMW-33P 3 1 15 25 40 15-40 563.65MW-34 10 6 10 20 30 10-30 572.49 Pneumatic SVEMW-34P 3 1 18 20 38 18-38 565.06MW-35 10 6 10 20 30 10-30 571.95 Pneumatic SVEMW-36 10 6 15 30 50.5 15-45 590.49 DPEMW-36P 6 2 15 30 45 15-45 589.83MW-37 10 6 40 56 100 40-96 591.26 Pneumatic SVE SVE Inactive during the quarter (through 12/23/08)MW-37P 6 2 36 60 98 36-96 590.81MW-38 10 6 23 40 70 23-63 595.05 SVE SVE Inactive during the quarter (through 12/23/08)MW-38P 6 2 23 40 63 23-63 595.92MW-39 10 6 15 20 35 15-35 574.80MW-40 10 6 5 25 30 5-30 559.08 Pneumatic SVEMW-41A 6 2 15 20 35 15-35 549.12MW-41B 6 2 48 10 58 48-58 549.55MW-41C 6 ~ 60 290 350 60-350 549.33MW-42A 6 2 15 20 35 15-35 579.72MW-42B 6 2 45 10 55 45-55 580.00MW-42C 6 6 60 290 350 60-350 579.43MW-43A 6 2 20 20 40 20-40 576.08 Pneumatic SVE Did not pump during the quarter (through 12/23/08)MW-43B 6 2 45 10 55 45-55 576.94MW-44 8 4 20 20 40 20-40 577.62MW-45 10 6 53 20 75 53-73 593.71 Pneumatic SVE
Comment
Kleinfelder1340 Charwood Road, Suite I
Hanover, MD
Table 1Well Construction and Remediation Well Summary
Inactive Exxon Facility # 2807714258 Jarrettsville Pike
Phoenix, MDDecember 23, 2008
Page 2 of 4
Well IDBorehole Diameter
(inch)
Well Diameter
(inch)
Riser/ Casing Length (feet)
Screen Length/ Open
Interval (feet)
Total Borehole
Depth (feet)
Screen Interval
(feet below TOC)
TOC Elevation Pump Type SVE/DPE Comment
MW-45P 6 2 52.5 20 72.5 52.5-72.5 593.30MW-45R 8 6 70 20 90 70-90 593.80 Pneumatic SVEMW-46 8 4 35 25 60 35-60 587.70MW-47A 6 2 20 20 40 20-40 583.91MW-47B 6 2 45 10 55 45-55 583.85MW-48A 6 2 20 20 40 20-40 569.69MW-48B 6 2 45 10 55 45-55 569.60MW-49 10 6 20 25 45 20-45 567.89 Pneumatic SVEMW-50 8 4 20 20 40 20-40 581.85MW-50B 6 2 45 10 55 45-55 581.93MW-50C 6 6 60 240 300 60-300 581.69MW-51 10 6 20 25 45 20-45 566.21 Pneumatic SVE SVE Inactive during the quarter (through 12/23/08)MW-52 10 6 20 50 70 20-70 582.08 Pneumatic SVEMW-53A 6 2 15 20 35 15-35 539.98MW-53B 6 2 45 10 55 45-55 539.64MW-53C 6 6 60 290 350 60-350 538.57MW-54 10 6 16 40 56 16-56 597.83MW-55 10 6 10 30 40 10-40 552.25 Pneumatic SVEMW-56A 6 2 15 20 35 15-35 540.23MW-56B 6 2 45 10 55 45-55 540.28MW-56C 6 6 60 290 350 60-350 540.30MW-57 10 6 25 40 65 25-65 583.18 Pneumatic SVEMW-57P 6 2 20 50 70 20-70 582.60MW-58 10 6 35 30 65 35-65 581.51 Pneumatic SVEMW-58P 6 2 20 50 70 20-70 582.64MW-59A 6 2 20 20 40 20-40 571.01 SVEMW-59B 6 2 45 10 55 45-55 571.19MW-59D 10 6 23 25 50 23-48 571.04 Pneumatic SVEMW-60 10 6 10 30 40 10-40 549.37 Pneumatic SVE SVE Inactive during the quarter (through 12/23/08)MW-61A 6 2 15 20 35 15-35 563.92MW-61B 6 2 45 10 55 45-55 563.53MW-62A 6 2 25 20 45 25-45 578.24MW-62B 6 2 45 10 55 45-55 577.89MW-63 10 6 16 20 40 16-36 546.62MW-64 10 6 5 25 30 5-30 540.47MW-65 10 6 5 25 30 5-30 536.39MW-66 10 6 5 25 30 5-30 535.53MW-67 10 6 10 30 40 10-40 542.78MW-68 8 4 5 25 30 5-30 526.39MW-69 8 4 5 25 30 5-30 533.06MW-70 10 6 25 25 50 25-50 558.70MW-71 10 6 10 30 40 10-40 552.37 Pneumatic SVE SVE Inactive during the quarter (through 12/23/08)MW-72 10 6 10 30 40 10-40 556.45 Pneumatic SVEMW-73 10 6 20 40 60 20-60 600.37MW-74 10 6 20 30 50 20-50 577.18 Pneumatic SVEMW-75 10 6 25 25 50 25-50 574.00 Pneumatic SVEMW-76 10 6 20 36 56 20-56 559.30 Pneumatic SVEMW-76P 6 2 20 30 50 20-50 560.29MW-77A 10 6 10 15 25 10-25 548.96 Pneumatic SVEMW-77B 10 6 33 10 43 33-43 548.69 Pneumatic SVEMW-77R 10 6 15 30 50 15-45 549.58 Pneumatic SVEMW-78A 8 4 2 18 22 2-20 530.77MW-78B 10 4 35 10 45 35-45 530.42MW-78C 6 ~ 60 240 300 60-300 531.42MW-78R 10 6 20 50 75 20-70 530.49 Pneumatic SVE SVE Inactive during the quarter (through 12/23/08)MW-79 8 4 2 8 10 2-10 521.42MW-80A 10 6 5 25 35 5-30 542.42 Pneumatic SVE SVE Inactive during the quarter (through 12/23/08)MW-80B 10 6 38.5 10 48.5 38.5-48.5 542.58 Pneumatic SVE SVE Inactive during the quarter (through 12/23/08)MW-81 10 6 5 20 25 5-25 540.77MW-82 10 6 5 20 25 5-25 546.31 Pneumatic SVEMW-82R 10 6 3 35 46 3-38 546.84 Pneumatic SVEMW-83 10 6 10 15 25 10-25 553.96MW-83R 10 6 20 30 50 20-50 554.78 Pneumatic SVE Did not pump/SVE inactive during quarter (through 12/23/08)MW-84 10 6 40 20 60 40-60 592.95 Pneumatic SVEMW-84P 6 2 40 20 60 40-60 593.13
Kleinfelder1340 Charwood Road, Suite I
Hanover, MD
Table 1Well Construction and Remediation Well Summary
Inactive Exxon Facility # 2807714258 Jarrettsville Pike
Phoenix, MDDecember 23, 2008
Page 3 of 4
Well IDBorehole Diameter
(inch)
Well Diameter
(inch)
Riser/ Casing Length (feet)
Screen Length/ Open
Interval (feet)
Total Borehole
Depth (feet)
Screen Interval
(feet below TOC)
TOC Elevation Pump Type SVE/DPE Comment
MW-85 10 6 40 20 60 40-60 591.65 Pneumatic SVEMW-85P 6 2 35 25 60 35-60 591.17MW-86 10 6 40 20 60 40-60 591.05 SVE SVE Inactive during the quarter (through 12/23/08)MW-86P 6 2 35 25 60 35-60 590.86MW-87 10 6 40 20 60 40-60 590.96 Pneumatic SVEMW-87P 6 2 35 25 60 35-60 590.62MW-88 10 6 37.5 20 60 37.5-57.5 592.43MW-88P 6 2 40 20 60 40-60 592.71MW-89 8 4 10 25 40 10-35 562.36 Pneumatic SVEMW-90 10 6 20 30 50 20-50 578.33 SVEMW-91 10 6 42 30 75 42-72 585.77MW-92 6 2 69 40 109 69-109 557.70MW-92A 8 4 20 20 40 20-40 558.49MW-92C 6 6 60 340 400 60-400 558.10MW-93 6 2 27 15 45 27-42 578.44MW-93B 8 4 55 20 75 55-75 578.32MW-93C 6 6 80 220 300 80-300 579.02MW-94 6 2 17 15 37 17-32 558.28MW-95 6 2 2 18 21 2-20 528.49MW-95B 6 4 70 5 75 70-75 529.01MW-96A 8 4 4 20 25 4-24 539.78MW-96B 8 4 38 15 55 38-53 539.26MW-97 8 4 4 20 24 4-24 541.31MW-98A 6 2 25 16 41 25-41 547.07MW-98B 10 6 48 10 65 48-58 547.14MW-99A 10 6 3 12 15 3-15 535.46MW-99B 10 6 28 10 42 28-38 534.29MW-100A 10 6 3 12 15 3-15 534.92MW-100B 10 6 31 10 45 31-41 533.96 Pneumatic SVE SVE Inactive during the quarter (through 12/23/08)MW-101A 10 6 3 12 15 3-15 537.64MW-101B 10 6 24 10 50 24-34 536.85MW-102 10 6 2 23 25 2-25 555.75 Pneumatic SVE SVE Inactive during the quarter (through 12/23/08)MW-103 8 4 33 20 53 33-53 592.40MW-104 8 4 30 20 50 30-50 592.45MW-105 10 6 25 22 50 25-47 592.54MW-106 10 6 8.5 20 30 8.5-28.5 547.68MW-107 8 4 15 30 45 15-45 584.93MW-108 10 6 35 20 55 35-55 601.07MW-109 10 6 30 40 70 30-70 588.10 Pneumatic SVEMW-110 10 6 25 35 60 25-60 585.10 Pneumatic SVEMW-111 10 6 20 28 50 20-48 555.46 Pneumatic SVE SVE Inactive during the quarter (through 12/23/08)MW-112 10 6 15 33 50 15-48 555.92 Electric SVE SVE Inactive during the quarter (through 12/23/08)MW-113 10 6 15 35 50 15-50 548.07 Pneumatic SVE SVE Inactive during the quarter (through 12/23/08)MW-114 8 4 25 15 40 25-40 586.86MW-115* 8 ~ ~ ~ 48.5 ~ ~MW-116 10 6 12 53 65 12-65 551.68 Electric SVE SVE Inactive during the quarter (through 12/23/08)MW-117 10 6 10 50 67 10-60 554.29 Pneumatic SVE SVE Inactive during the quarter (through 12/23/08)MW-118 10 6 20 20 40 20-40 562.90 Pneumatic SVEMW-119 10 6 15 25 40 15-40 554.35 Pneumatic SVEMW-120 10 6 15 25 40 15-40 554.00MW-121 10 6 35 25 60 35-60 593.80 Pneumatic SVEMW-122 10 6 20 30 50 20-50 560.45MW-123 10 6 15 35 50 15-50 550.85 Pneumatic SVE Did not pump/SVE inactive during quarter (through 12/23/08)MW-124 10 6 13 23 38 13-36 553.50 Pneumatic SVE SVE Inactive during the quarter (through 12/23/08)MW-125 10 6 32 23 55 32-55 574.08MW-126 10 6 24 15 41 24-39 568.76 Pneumatic SVEMW-127 10 6 28 25 53 28-53 571.25 Pneumatic SVEMW-128A 10 6 38 20 58 38-58 561.55MW-128B 10 6 68 10 83 68-78 561.18MW-129A 10 6 25 20 45 25-45 566.56MW-129B 10 6 51 10 68 51-61 565.62MW-130 6 2 25 25 50 25-50 577.35MW-131A 6 2 5 15 25 5-20 526.33MW-131B 8 2 30 5 35 30-35 526.31MW-131C 6 6 60 240 300 60-300 526.00
Kleinfelder1340 Charwood Road, Suite I
Hanover, MD
Table 1Well Construction and Remediation Well Summary
Inactive Exxon Facility # 2807714258 Jarrettsville Pike
Phoenix, MDDecember 23, 2008
Page 4 of 4
Well IDBorehole Diameter
(inch)
Well Diameter
(inch)
Riser/ Casing Length (feet)
Screen Length/ Open
Interval (feet)
Total Borehole
Depth (feet)
Screen Interval
(feet below TOC)
TOC Elevation Pump Type SVE/DPE Comment
MW-132A 8 2 2 15 17 2-17 524.71MW-132B 8 2 25 5 30 25-30 524.45MW-133A 6 2 15 15 30 15-30 549.05MW-133B 6 2 40 10 50 40-50 549.22MW-133C 6 6 60 140 200 60-200 550.87MW-134A 6 2 28 25 55 28-53 544.04MW-134B 6 2 65 10 75 65-75 544.29MW-135A 8 4 20 20 40 20-40 560.64MW-135B 8 4 50 10 60 50-60 560.41MW-136 6 2 25 25 50 25-50 547.48MW-137 10 6 15 30 45 15-45 563.56 Pneumatic SVEMW-138 10 6 14 30 45 14-44 570.58MW-139 10 6 60 20 80 60-80 592.43MW-140A 8 4 10 20 30 10-30 548.02MW-140B 8 4 40 15 55 40-55 547.49MW-141A 6 2 30 20 50 30-50 586.34MW-141B 6 2 60 10 70 60-70 586.42MW-141C 6 ~ 70 230 300 70-300 586.31MW-142 10 6 30 35 65 30-65 583.87MW-143 10 6 30 35 65 30-65 584.39MW-144 8 6 25 35 62.5 25-60 593.11 SVEMW-145P 3 1 15 25 40 15-40 564.11MW-146 8 4 35 25 60 35-60 601.84MW-147 10 2 ~ ~ 80 ~ 534.63MW-147PA 6 2 8 72 80 8-80 534.53MW-147PB 10 2 8 72 80 8-80 534.43MW-147PC 6 2 8 72 80 8-80 534.52MW-148A 6 2 30 33 63 30-63 609.96MW-148B 6 2 73 10 83 73-83 608.97MW-149 10 6 19 30 50 19-49 589.94MW-150A 3 1 2 12 14 2-14 521.66MW-150B 3 1 24 10 34 24-34 520.83MW-151 8 4 35 25 60 35-60 594.74 Pneumatic SVEMW-152 8 4 35 25 60 35-60 591.94 Pneumatic SVEMW-153A 8 4 5 20 25 5-25 548.58MW-153B 8 4 35 10 45 35-45 548.46MW-154 10 6 20 40 60 20-60 563.03 Pneumatic SVEMW-155 10 6 5 45 50 5-50 557.88 SVE SVE Inactive during the quarter (through 12/23/08)MW-156 10 6 20 50 70 20-70 555.98 Pneumatic SVEMW-157P 6 2 10 50 60 10-60 552.64MW-158P 6 2 20 40 60 20-60 553.77MW-159 10 6 30 40 70 30-70 550.58MW-160 10 6 20 50 70 20-70 567.97MW-161 10 6 20 40 60 20-60 570.79MW-162A 6 4 35 10 45 35-45 547.33MW-162B 10 2 55 10 65 55-65 547.33MW-162C 6 6 60 240 300 60-300 546.27MW-163B 6 2 45 10 55 45-55 531.50MW-164B 8 4 60 15 75 60-75 592.56MW-165C 6 6 60 390 450 60-450 587.64MW-166A 8 4 40 20 60 40-60 590.15MW-166B 8 2 50 30 80 50-80 589.43PW3418 6 6 60 555 615 60-615 596.18PW14209 6 6 40 160 200 40-200 563.85
TOC = Top of CasingBTOC = Below Top of CasingDPE = Dual Phase ExtractionSVE = Soil Vapor ExtractionNSVD = Not Surveyed to Vertical Datum* = Well Abandonedfbg = feet below grade
FLUTe liners were installed into the following wells:- MW-41C (sample ports at 75-80 fbg, 95-97 fbg, 120-130 fbg, 190-195 fbg)- MW-53C (sample ports at 215-220 fbg and 225-235 fbg)- MW-56C (sample ports at 100-110 fbg, 310-315 fbg, 320-325 fbg)- MW-78C (sample port at 60-70 fbg).
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