corrective action plan - inactive exxon facility - phoenix, md

1340 Charwood Road, Suite IHanover, MD

21076p| 410.850.0404f| 410.850.0049

kleinfelder.com

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


Copyright 2009 Kleinfelder East, Inc. iv January 2009All Rights Reserved

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


Copyright 2009 Kleinfelder East, Inc. Page 1 of 19 January 2009All Rights Reserved

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.



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.



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



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.”



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.



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.



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.



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.



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.



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.



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.



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.



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.



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.



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.



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.



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.



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.



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.

FIGURES

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

MW-86

MW-85

MW-84

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-4A

MW-2A

MW-1A

MW-57MW-54

MW-55

MW-52

MW-51

MW-50

MW-49

MW-46

MW-45

MW-44

MW-40

MW-39

MW-38

MW-37

MW-36

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-15MW-3P

MW-13MW-12

MW-11

MW-6P

MW-154

MW-155MW-156

MW-161

MW-160

MW-152

MW-149

MW-147

MW-84P

MW-50C

MW-146

MW-143

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

MW-85P

MW-77R

MW-82R

MW-57P

MW-106

MW-103 MW-104

MW-105

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-122

MW-45P

MW-121

MW-120

MW-119

MW-115

MW-117MW-112

MW-111

MW-113

MW-114

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


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




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


JARR

ETTS

VILLE

PIKE

SWEET AIR ROAD

KATIE

ROAD

JACKSON CABIN ROAD


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


8840710/24/08B. Myers

S. Rochford

Fig2 East GW Con Map 072508.mxd



0 90 18045Feet


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


3300PAPER MILL

14300ROBCASTE

3301PAPER MILL

3305PAPER MILL

14222JARRETTSVILLE

3306PAPER MILL


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


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


8840710/16/08

B. MyersS. Rochford

Fig3 West GW Con Map 072508.mxd




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


SWEET AIR ROAD


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


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


8840712/26/08

A. Patterson

L. Schultheis

Fig7 Rem Layout 052708.mxd




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




Page 2 of 4


(inch)

Well Diameter

(inch)


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


Hanover, MD




Page 3 of 4


(inch)

Well Diameter

(inch)


Screen Length/ Open

Interval (feet)

Total Borehole

Depth (feet)

Screen Interval

(feet below TOC)


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


Hanover, MD




Page 4 of 4


(inch)

Well Diameter

(inch)


Screen Length/ Open

Interval (feet)

Total Borehole

Depth (feet)

Screen Interval

(feet below TOC)


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).


Hanover, MD

ATTACHED FILE

corrective action plan - inactive exxon facility - phoenix, md

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