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FIVE-YEAR REVIEW REPORT FOR SPRINGFIELD TOWNSHIP DUMP SUPERFUND SITE

OAKLAND COUNTY, MICHIGAN

Prepared by

U.S. Environmental Protection Agency . REGIONS

CIDCAGO, ILLINOIS

. Richard C. Karl, Director Date Superfund Division

TABLE OF CONTENTS

Table of Contents .............................................................................................................................. i

List of Acrpnyms ........................................................................................................... · ................ iii

Executive Summary .........................................................................................................................v

Five-Year Review Summary Form ..................................... ~ ......................................................... vi

I. Introduction ....... : ........ ; . .- ....................................................................................................... 1

II. Progress Since· the Last Review ........................................................................................... 1

Status of Recommendations....................................................... · ....... ; ................................... 3

Remedy Implementation Activities .................................................................................... .4

Institutional Controls ...........................................................................................................7

III. Five-Year Review Process ...................................................................................................9

Administrative Components ................................................................................................9

-. Community Notification and Involvement ..........................................................................9

Document Review .............·:: .......... · ...................... : .... -............................................................9

Data Review ....................................................................................................................... 10

Site Inspection, ................................................................................................................... 11

Interviews.................................................................................................................. ~ ......... 11

IV. Technical Assessment. ........................... : .................................... ; .... : ................................. 12

Question A: Is the remedy functioning as intended by the decision documents? ............. 12

Question B: Are the exposure assumptions, toxicity data, cleanup levels, and remedial

Question C: Has any other information come to light that could call into question the

action objectives (RAOs) used at the time of the remedy selection still valid? ................ 12

protectiveness of the remedy? .......................... , ................................................................. 12

Technical Assessment Summary ................................................. ; ..................................... 12

V. Issues/Recommendations and follow-up Actions .............................................................. 13

VI. Protectiveness Statement ................................................................................................... 14

Table of Contents (Continued)

VII. Next Review ............................................................................................................... .-....... 15

Tables

Table I - Protectiveness Determinations/Statements from the 2009 FYR ............... : .......... 1 Table 2 - Status of Recommendations from the 2009 FYR ............................ · ....................2 Table 3 - Summary of Planned and/or Implemented I Cs ...................................................8 Table 4 - Issues and Recommendations/Follow-up Actions .............................................. 13

Figures

Figure 1 - Inferred Horizontal Extent of TCE in Groundwater. ............ : ............................. 5 Figure 2 - Inferred Horizontal Extent of TCE in the Soil and Capillary Fringe .................6

Appendix A - Existing Site Information ...................................................................................... 16

·site Chronology ............................... : ................................................................................. 16

Background ....................... .-......................................................................................... ~ ...... 16

Physical Characteristics •............................ .'............................. : ............................. 16 Hydrology ......................................................... ,. ..................................... : ................ 16.

·Land and Resource Use .......................... ;"" ............................................................ 17 History of Contamination ...................................................................................... 1 7 Initiai Response ......................... ~ .............•.............................................................. 17 Basis- for Taking Action ............................................... : ......................................... 18

Remedial Actions ............................................................................................................... 18

Remedy Selection ............................................ : ..................................................... 18 Remedy Implementation ........................................................................................21 System Operation and Maintenance ......................................................................22

Appendix B - Site Location Map, Recorded Deed Restrictions, and Summary of Groundwater Sampling Results ............... ~ ..........................................................................................................23

11

LIST OF ACRONYMS

ARAR Applicable or Relevant and Appropriate Requirement

AROD ROD Amendment

AS/SVE Air Sparge/SoilVapor Extraction

BGS Below Ground Surface

CERCLA Comprehensive Environmental Response, Compensation, and Liability Act

CFR Code of Federal Regulations

·coc Contaminants of Concern

.EPA United States Environmental Protection Agency

ESD Explanation of Significant Difference

FYR Five-Year Review

GZA GZA GeoEnvironmental

ICs . ·-Institutional Controls

ISCO In-Situ Chemical Oxidation

MCL Maximum Contaminant Level

MCLG Maximum Contaminant Level Goal

MDEQ Michigan Department of Environmental Quality

MDNR Michigan Department of Natural Resources

NCP National Contingency Plan

NPL National Priorities List

OCHD Oakland County Health Department

O&M Operation and Maintenance

P AH Polyaromatic Hydrocarbon

PCB Polychlorinated Biphenyl

lll

PEAS

PPB

PRP

RA

RAO

RAS

RD

RI/FS

ROD

RPM

SSAC

STSSC

SVE

svoc

voe

Pollution Emergency Alerting System

Parts per Billion

Potentially Responsible Party

Remedial Action

Remedial Action Objective

Remedial Action Standards

Remedial Desi.gn

Remedial Investigation/Feasibility Study

Record of Decision

Remedial Project Manager

Springfield Site Action Committee

Springfield Township Site Steering Committee

Soil Vapor Extraction

Semivolatile Organic Compound

Volatile Organic Compound

IV

EXECUTIVE SUMMARY

This is the fourth Five-Year Review (FYR) for the Springfield ToWI1ship Dump Superfund Site (the Springfield Site) located ·in Oakland County, Michigan. This FYR reviews current information to determine ifthe remedy is, and will continue to be, protective of human health and the environment. The triggering action for this statutory FYR was the signing of the previous FYR on September 14, 2009.

The Springfield Site is located at 12955 Woodland Trail, 3 miles south ofDavisburg, Michigan. The Springfield Site is a rural, 12-acre residential parcel surrounded by dense woods and rolling hills. Unauthorized disposal of liquid chemical waste contaminated approximately 4 acres of the property sometime in the 1960's.

The State of Michigan performed a partial cleanup at the Springfield Site in 1979, then referred it to the United States Environmental Protection Agency (EPA). EPA investigated the Springfield Site in 1982, and placed it on the National Priorities List (NPL) in September 1983. EPA issued a Record of Decision (ROD) in September 1990, which required (1) excavation and on-site incineration of contaminated soils, (2) Soil Vapor Extraction (SVE) to remove residual Volatile Organic Compounds (VOCs) from unsaturated soil, and (3) groundwater extraction and treatment to restore contaminated groundwater. A November 1993 Explanation of Significant Differences (ESD) established cleanup standards for arsenic and lead, and a June 1998 ROD Amendment changed the method for addressing soils contaminated with Polychlorinated Biphenyls (PCBs), required institutional controls (ICs) on affected portions. of the Springfield Site, and reset groundwater cleanup standards to reflect current state policy.

The Springfield Site remedy currently protects human health and the environment in the short-term. The primary contaminant of concern remaining on-site above Remedial Action Standards-(RASs) is __ trichloroethylene (TCE), and EPA is currently negotiating with signatories to the 1998 Consent Decree (CD) to optimize remedial measures and accelerate the removal ofresidual contamination. To ensure protectiveness in the long-term residual contamination must be accurately delineated and the adequacy of contaminant captur~ must be confirmed. In addition, groundwater extraction and treatment (or an equivalent remedial measure) and environmental monitoring must continue until remedial standards are attained, and a new restrictive covenant should be finalized and recorded. Compliance with existing and planned ICs that prohibit interference with the remedy and limit groundwater use is also necessary to ensure long-term protectiveness of the remedy. An Institutional Control Implementation Assurance Plan (ICIAP) to ensure long-term stewardship should also be developed.

v

Five-Year Review Summary Form

SITE IDENTIFICATION'

Site Name: Springfield Township Dump

EPA iD: MID980499966

City/County: Davisburg/ Oakland County

NPL Status: Final

Multiple OUs? Has the site achieved construction completion?

No Yes

I

REVIEW STA TUS ' I

Lead agency: EPA

Author name (Federal or State Project Manager): William J. Ryan

Author affiliation: U.S. EPA Region 5, SFD

. Review p~r~od: _5114/2_q13 - 6/14/2014

- -· .· .. .. .. Date ofsite inspection: 6/25/2013

Type of review: Statutory

Review number: 4

Triggering action date: 9/14/2009

Due date (five years after triggering action date): 9/14/2014

vi

Five-Year Review Summary Form (continued)

Issues and Recommendations Identified in the Five-Year Review:

OU(s): OUJ/Sitewide

Affect Current Protectiveness

No

OU(s): OUJ/Sitewide

Affect Current Protectiveness

No

OU(s): OUJ/Sitewide

Affect Current Protectiveness

No

Issue Category: Changed Site Conditions

Issue: TCE above the RAS has been recorded approximately 50 feet south of the Springfield Site boundary in MW-304S since October 2012.

Recommendation: Closely monitor the situation to ensure that conditions continue to improve, respond immediately if they

. deteriorate, and consider the potential effects of groundwater mounding in the design of any supplemental remedial efforts.

Affect Future Party Oversight Party Milestone Protectiveness Responsible Date

Yes PRP EPA/State 9/30/2015

Issue Category: Changed Site Conditions

Issue: Previously identified deficiencies in the remedial action that include: inadequate characterization of residual contamination, questionable effectiveness of the groundwater extraction system, questionable effectiveness of the Soil Vapor Extraction (SVE) system, questionable effectiveness of the Air Sparging system ..

Recommendation: EPA will require that the necessary characterization and optimization work is completed.

Affect Future Party Oversight Party Milestone Protectiveness Responsible Date

Yes PRP EPA/State 9/30/2015

Issue Category: Monitoring

Issue: Site sampling and Operation and Maintenance (O&M) plans need to be updated to reflect current protocols.

Recommendation: Update Site Sampling and O&M plans.

Affect Future Party Oversight Party Milestone Protectiveness Responsible Date

Yes PRP EPA/State 9/30/2015

Vll

OU(s): OUJ/Sitewide ISsue Category: Institutional Controlslnstitutional Controls

Issue: A review of the I Cs is needed to ensure that the remedy continues to function as intended and that effective procedures are in-place for long-term stewardship of the Springfield Site'.

Recommendation: Finalize and record UECA restrictive covenant; complete an ICIAP.

Affect Current Affect Future Party Oversight Party Milestone Protectiveness Protectiveness Res.ponsible Date

No Yes PRP/EPA EPA/State 9/30/2015

OU 1/Sitewide Protectiveness Statement

Protectiveness Determination: Short-term Protective

Protectiveness Statement: The Springfield Site remedy currently protects human health and the environment in the short­

term. The primary contaminant of concern remaining on-site above Remedial Action Standards (RASs) is trichloroethylene (TCE), and EPA is currently negotiating with signatories to the 1998 Consent Decree (CD) to optimize remedial measures and accelerate the removal of residual contamination. To ensure protectiveness in the long-term residual contamination must be accurately delineated and the adequacy of contaminant capture must be confirmed. In addition, groundwater extraction and treatment (or an equivale~t-remedial measure) and environmental monitoring must continue until remedial standards are attained, and a new restrictive covenant should be finalized and recorded. Compliance with existing and planned ICs that prohibit interference with the remedy and limit groundwater use is also necessary to ensure long-term protectiveness of the remedy. An Institutional Control Implementation Assurance Plan (ICIAP) to ensure fong-term stewardship should also be developed.

Vlll

I. INTRODUCTION

The purpose of a Five-Year Review (FYR) is to evaluate the implementation and performance of a remedy in order to determine if the remedy will continue to be protective of human health and the environment. The methods, findings, and conclusions of reviews are documented in five-year review reports. In addition, FYR reports identify issues found during the review, if any, and document recommendations to address them.

The U.S. Environmental Protection Agency (EPA) conducts FYRs pursuant to the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) Section 121 and the National Contingency Plan (NCP). CERCLA 121 states:

"Ifthe President selects a remedial action that results in any hazardous substances, pollutants, or contaminants remaining at the site, the President shall review such remedial action no less often than each five years after the initiation ofsuch remedial action to assure that human health and the environment are being protected by the remedial action being implemented. In addition, ifupon such review itis the judgment ofthe President that action is appropriate at such site in accordance with section {104} or {106}, the President shall take or require such action. The President shall report to the Congress a list offacilities for which such review is required, the results ofall such reviews, and any actions taken as a result ofsuch reviews. "

EPA interpreted this requirement further in the NCP; 40 Code of Federal Regulations (CFR) Section 300.430(t)( 4 )(ii), which states:

"•"'' ••,, • • '• •• ' r

"Ifa remedial actionis selected that results in .hazardous substances, pollutants, or contaminants remaining at the site above levels that allow for unlimited use and unrestricted exposure, the lead agency shall review such actions no less often than every five years after the initiation ofthe selected remedial action." '

EPA conducted a FYR on the remedy implemented at the Springfield Townshlp Dump Superfund Site in Davisburg, Oakland County, Michigan. EPA is the lead agency for developing and implementing the remedy for the Springfield Site. Michigan Department of Environmental Quality (MDEQ), as the support agency representing the State of Michigan, has reviewed all supporting documentation and' provided input to EPA during the FYR process.

This is the fourth FYR for the Springfield Township Dump Superfund Site. The triggering action for this statutory review is the completion date of the previous FYR. The FYR is required due to the fact that hazardous substances, pollutants, or contaminants remain at the Springfield Site above levels that allow for unlimited use and unrestricted exposure (UU/UE). The Springfield Site consists of one, site-wide Operable Unit, all of which is addressed in this FYR.

II. PROGRESS SINCE THE LAST REVIEW

Table 1: Protectiveness Determinations/Statements from the 2009 FYR Protectiveness

OU# Determination

Protectiveness Statement

Site-wide Short-term Protective The remedy is currently protective of human health and the

1

environment in the short term because human exposure to contaminated media is under control. The progress toward long term protectiveness at the Springfield Site was interrupted, however, by the May 2009 bankruptcy of Chrysler Corporation, which precipitated the shutdown of the groundwater extraction and treatment facility in July 2009. This shutdown does not represent an immediate threat to human health or the environment because extraction and treatment was for groundwater restoration and not intended as a containment mechanism. Nevertheless, the remedy must be fully functional and an Institutional Controls study must be completed before a long term protectiveness determination can be made. EPA is evaluating the viability of the remaining signatories to the 1998 Consent Decree (CD) and will take all steps necessary to restore the remedial action once the viable PRPs are notified.

Table 2: Status of Recommendations from the 2009 FYR

Original Current CompletionRecominendationsl Party Oversight

Issue Milestone Status Date (ifFollow-up Actions Responsible Party

Date applicable)

Appropriate deed Complete an PRP EPA 2/28/2010 Ongoing NIA restrictions were Institutional Controls placed on the study for those areas portion of the of the Springfield property where Site where soil contamination contaminated ground was located. water has migrated Further evaluation and implement

..- -··is needed to institutional controls -­determine if there - that ensure-ground · ........... . ' - .~·· . ...... . -. - ._.,,.

are any off-site water is not locations related consumed and there to the ground is no interference water contaminant with the remedy. plume where institutional controls are necessary. The bankruptcy of EPA will evaluate the EPA EPA 1213012009 Completed March 2011 Chrysler viability of the (date Corporation has remaining signatories extraction called into to the 1998 Consent and question the Decree (CD) and take treatment continuity of all steps necessary to restarted) operations at the restore Springfield Site. implementation of

the remaining elements of the remedial action once viable PRPs are identified.

Previously EPA will require that PRP EPA 613012010 Ongoing NIA identified the necessary deficiencies in the characterization and remedial action optimization work is that include: completed once the

remedial action has · • Inadequate

2

characterization been restored. of residual contamination

• Questionable effectiveness of the groundwater extraction system

• Questionable effectiveness of the Soil Vapor Extraction (SVE) system

• Questionable effectiveness of the Air Sparging system

• Questionable adequacy of the monitoring well network

Status of Recommendations

Recommendation 1

· • The PRPs have not completed anJC investigation, but they_ are deyeloping a new restrictive covenant that conforms to current state-requirements~ and when approved by Ef>A andMDEQ it will replace the deed restrictions that were recorded in accordance with the CD on November 24, 1998.

Recommendation 2

• Chrysler declared bankruptcy April 30, ~009; On June 22, 2010 EPA sent notice to the remaining signatories to the 1998 CD. The PRP Group was reorganized in December 2009. Environmental monitoring resumed in October 2010, and the groundwater extraction and treatment system was restarted in March 201 L

Recommendation 3

• EPA notified the reorganized PRP Group that they must restart the groundwater extraction and

treatment system and conduct additional investigations at the Springfield Site on June 22, 2010. The PRP Group replied on July 8, 2010 that it was finalizing an agreement with its supervisory contractor, and that it would be initiating efforts to (1) reestablish access agreements entered into by Chrysler, (2) restart the groundwater extraction and treatment system, (3) restart the groundwater monitoring program, (4) begin performing the investigations set forth in the EPA­approved Additional Site Investigation Work Plan, and (5) perform an Engineering

3

Evaluation/Cost Analysis (EE/CA) ofremedial alternatives designed to accelerate removal of residual contamination. T4ese activities are discussed in further detail below,

Remedy Implementation Activities

After Chrysler LLC declared bankruptcy in 2009, EPA notified the remaining signatories to the 1998 CD that they were still responsible for implementation of the 1990 ROD. The PRP Group responded to EPA's notice and the following activities have resumed or been carried out since the Group was reorganized:

• Regular groundwater sampling and analysis was resumed in October 2010. The data review section presents a summary of current monitoring data.

• An additional site investigation was conducted in November and December 2010 pursuant to the Additional Site Investigation Work Plan approved by EPA in June 2008. The results were documented in the final Additional Site Investigations Report dated February 25, 2011.

• Operation and maintenance of the groundwater extraction and treatment system was resumed in March 2011, and continues to date.

• Remedial alternatives to remove residual TCE from the soil and groundwater were evaluated and documented in an EE/CA dated May 24, 2011.

• An Air Sparging and Soil Vapor Extraction (AS/SVE) pilot test was conducted in 2012 to develop design parameters for cost analysis. A final Air Sparging Pilot Test Evaluation Report was submitted in January 2013 .

. Discussions of additional subsurface .investigations were under_ way prior to completion of the 2009 FYR, and EPA had approved the Additional Site Investigation Work Plan in June 2008. This work plan was implemented in November and December of 2010. The additional site investigation was designed to assess the extent of residual contamination in the groundwater, capillary fringe, and unsaturated soils. The results were presented in the Additional Site Investigation Report dated February 25, 2011, and the inferred horizontal extents of residual contamination in groundwater and soil are depicted in Figures 1 and 2. Conclusions from the 2010 Additional Site Investigation Report are as follows: ·

• Other than TCE, no contaminants of concern above the RAS were detected in the nine soil borings completed for this investigation.

• TCE and other contaminants of concern were not detected in soil and groundwater samples collected at off-site soil boring locations GZA07SB-7, GZA07SB-8, or GZA07SB-9, south of the fenced area. ·

• TCE above the RAS of 5 µg/l for groundwater was observed in soil borings GZA07SB-1, GZA07SB-2, GZA07SB-3, GZA07SB-4, and GZA07SB-5. The inferred horizontal extent of . TCE in groundwater shown in Figure 1 is based on the 2010 additional site investigation and previous studies.

• TCE above the RAS of 0.1 mg/kg for soil was observed in soil borings GZA07SB-4 and GZA07SB-5. The inferred horizontal extent of TCE in soil shown in Figure 2 is based on the 2010 additional site investigation and previous studies.

4

Figure 1 - Inferred Horizontal Extent of TCE in Groundwater based on results presented in the 2010 Additional Site Investigation Report and previous studies 1

-1rt.tW302D <1

APPROXIWITE LOCATION OF uE~snNG GROU,,0\\'4TER TR£1.TMENT SYSTEM

•wws <1

4MW305S <1

...... ./Sllll'llP• ..... = ......... -- ("l/L) ,// -(ft) (ft)

•• \ I1017.4t ...... 1007.41 .Ol-1Dl!I JO

11.1-118 "" "7.41 IU-1UI "'-"

"".. /~1ZAO~9a7.41 2>-121

• GZA07SB-7

GZA07SB-9 ....... ....... ....... -' .............. ..... .......... TCt:

'""""' (..,.l,)......... - "" e-- --1""'1l (fl)(t\l (•) (11)

1005.42 tS-100 <1.0 101~.a IS-100 <1.0

100,J.O ...... o:t-11Cl <1.0 n..., 1>-1ZQ <1.0

Ul.O <1.0

....... ~DD .... D>-110 .... _,,.

t7J.O 13S-14' <1.0

Hl.D ,~,~ <1.0 ..... ..-100 <1.0

•cZA07SB-8 .... = 5'"'Pll M\'13045 :1.= =(~<1 (ft) (ft).

tGI0.72 10-95 <1.D

IC00..72 00-105 <1.0

LEGEND:

• EXISTING MONITORING WELL LOCATIONS <1 TCE CONCENTRATION u9/L (OCTOBER 2010)

® EXISTING RECOVERY WELL

© EXISTING INJECTION WELL

0 SVE WELL SVE-1

• AIR SPARGE WELL AS-1

• SOIL BORING LOCATIONS GZA07SB-1

INFERRED HORIZONTAL EXTENT OF GROUNDWATER IMPACT

1015.&5 V~-100 <1.0

tC!OU, IO!l-11 <1.D

1 The inferred horizontal extent of TCE in groundwater in Figure 1 should extend south ofMW-304S to represent the presence of TCE that was subsequently detected in MW-304S in October 2012. This is further discussed in the Data Review Section.

5

Figure 2 - Inferred Horizontal Extent of TCE in the Soil and Capillary Fringe based on results presented in the 2010 Additional Site Investigation Report and previous studies

LEGEND:.

@ EXISTING RECOVERY WELL

<D EXISTING INJECTION WELL

i APPROXIMAlE LOCATION OF EXISTING Gll:JU~OWATER TR£AWENT SYSTEM

0 SVE-1

•AS-1

SVE WELL

AIR SPARGE WELL

N

J •GZA07S!l-1

A

2010 SOIL BORING LOCATIONS

TCE CONCENTRATIONS (mg/Kg) AT DEPTH OF APPROX. 80Fl. TO 95 FT. FROt.t PREVIOUS SOIL BORING

0 <0.05

TCE CONCE.NTRATIONS (mg/Kg) AT DEPTH OF APPROX. 80FT. TO 95 FT. FROM 2005 SOIL BORING

INFERRED HORIZONTAL EXTENT OF TCE IMPACT IN CAPILLARY FRINGE (80-95 FT. BGS)

IOla..24 72.!o-ll <0.081

1019.2'4 71.$--«1 cO.O!al 1024.24 "4.!5-a <0.062

............. TC<....... """~

........ .......,.,. di,,,l(l!Wl.l:S !9..a--eD (ft) = GZA07SB-9• tOJe.e 77,,_71' <0.0S)

1031...U 7.1..>-7' <0-""2 tCJ2.85 IJ.6-84 <0.046,.....,,.1GU.U ·~~-dl.O<I&

1020.» ........ "'""" ~·-•~!t.raz 11-11.D o11;0,.,,,

1032.~ 8'bl!'-' C0.057

t0l2.52 l!ID-eO.S C0.055

lOZB.02 e'~ <0~

Following completion of the additional site investigation the PRPs conducted an EE/CA to evaluate whether there may be more cost-effective remedies. The remedial alternatives evaluated were: (1) Air Sparging with Soil Vapor Extraction (AS/SVE), (2) In-Situ Chemical Oxidatfon with Steam Enhanced Extraction (ISCO/SEE), (3) Zero-Valent Iron with Steam Enhanced Extraction (ZVUSEE), (4). Enhanced Reductive Dehalogenation with Steam Enhanced Extraction (ERD/SEE), and (5)

6

Groundwater Extraction with Soil Vapor Extraction (GE/SVE). The EE/CA ranked AS/SVE highest among the potential alternatives for its overall effectiveness, simplicity of implementation, and relative cost.

An AS/SVE pilot test was performed following the EE/CA, and a preliminary design/cost analysis of a full-scale AS/SVE system was developed to compare the costs with running the existing groundwater extraction and treatment system alone until remedial standards are achieved. The preliminary design/cost analysis indicated that uncertainties in the extent of TCE impacted groundwater would affect the equipment selection and number of AS/SVE wells needed, so an additional supplemental investigation work plan was developed to further delineate the extent of TCE contamination in groundwater. This work plan was submitted to the Agencies for review in April 2014, and was approved by EPA July 17, 2014. EPA anticipates that this investigation will be completed by October 2014. An AS/SVE system would help to remove residual contamination that is currently trapped in the capillary fringe and adjacent vadose zone. This contamination is not effectively addressed by the groundwater extraction and treatment system, and is remobilized by fluctuations in the water table, thereby delaying the attainment of RASs. Nevertheless, exposures are not occurring as a result of this remobilization.

Institutio.nal Controls

Institutional Controls (ICs) are required to ensure the protectiveness of the remedy. I Cs are non-engineered instruments, such as administrative and legal controls, that help to minimize the potential exposure to contamination and protect the integrity of the remedy. I Cs are required to ensure long-term protectiveness for any areas that do not allow UU/UE.

The 1990 ROD anticipated that the Springfield Site would not require monitoring, deed restrictions, or I Cs, because the remedial action would achieve remedial standards-and the residual ·incinerator ash would be either disposed of off-site or stabilized prior to its on-site disposal. Nevertheless, the 1998 ROD Amendment allowed a lower level of long-term effectiveness and permanence for the surface soil, with the residual .contamination being managed over the long-term using conventional means, including the placement of a soil cap and ICs on affected portions of the Springfield Site. The 1998 ROD Amendment therefore required the following:

A legally enforceable deed restriction (or "easement'') will be placed on the "Nickson property" so that the future use ofthe south 500 feet ofthe "Nickson · property" will be restricted to those activities which do not interfere with the performance ofany cleanup activities listed in the 1990 ROD and the 1998 ROD Amendment or disturb the integrity ofthe soil cap to be placed over the treatment residuals.

Deed restrictions were included in the 1998 Consent Decree and filed with the Oakland County Register of Deeds on November 24, 1998. A copy of the restrictions and a map showing the area affected by the restrictions is provided in Appendix B. These restrictions preclude any use of the property that would result in filling, grading, excavating, mining, drilling, building, storage or disposal ofjunk, debris, waste, trash, inoperable vehicles or equipment, or other use or development that would disturb soils, sub-soils, or groundwater, except for activities approved by EPA as part of required remedial action for this site. The .PRPs are developing a new restrictive covenant pursuant to the Michigan Uniform Environmental Covenants Act (UECA), and when approved by EPA and MDEQ it will replace the deed restrictions that were recorded in 1998.

7

T bl e 3 S ummarv o fPlanne d an or mpementedlCsa di I Media,

engineered controls, and areas that do not support

UU/UE based

ICs Needed

ICsCalled for in the Decision

Documents

Impacted Parcel(s)

IC Objective

Title of IC Instrument Implemented and Date

(or planned)

on current conditions

Provide site access and prohibit filling, grading,

Springfield Parcel ID No.: 07­ excavating, mining, Deed restrictions, filed Township Dump Yes Yes 32-300-009 (See drilling, building, or other 11/24/98

Site property Appendix B) activities that would UECA (planned) disturb soils, sub-soils, or groundwater.

Parcel ID No.: 07- Deed restrictions, filed Groundwater Prohibit use of

Yes Yes 32-300-009 (See 11124/98 (on-site) groundwater.

AppendixB) UECA (planned)

Current Compliance

Based on site inspections and interviews, EPA finds there are currently no known uses of the Springfield Site that would be considered inconsistent with the objectives of the I Cs. Access to the Springfield Site is also restricted by a fence. The remedy appears to be functioning as intended.

IC Follow up Actions Needed

IC follow up actions include finalization and recording of the UECA restrictive covenant, and planning for long-term stewardship.

Long Term Stewardship

Long-term protectiveness at the Springfield Site requires compliance with use restrictions to ensure that the remedy continues to function as intended. Compliance with ICs will be ensured through maintenance, monitoring and enforcement of effective ICs. To that end, long-term stewardship procedures will be reviewed and a plan developed as part of an ICIAP to be developed by the PRPs. The plan would include regular inspection of I Cs at the Springfield Site·and annual certification to EPA and MDEQ that effective I Cs remain in place.

8

III. FIVE-YEAR REVIEW PROCESS

Administrative Components

The PRPs were notified of the initiation of the five-year review on 5/14/2013. The Springfield Township Dump Superfund Site Five-Year Review was led by Bill Ryan of the EPA, Remedial Project Manager for the Springfield Site and Cheryl Allen, the Community Involvement Coordinator (CIC). Mary Schafer, of the MDEQ, assisted in the review as the representative for the support agency.

The review, which began on 5/14/2013, consisted of the following components:

• Community Involvement;

• Document Review;

• Data Review;

• Site Inspection; and

• Five-Year Review Report Development and Review.

Community Notification and Involvement

Activities to involve the community in the five-year review process were initiated with a meeting in May 2013 between the RPM and CIC for the Springfield Site. A notice was published in the local newspaper, the Oakland Press, on July 19, 2014, stating that there was a five-year review and inviting the public to submit any comments to the EPA, The results ofthe review and the report will be made avi:i.Pc:tbJe ~t the Springfield Sit.e inforffiation repository i.~cilfed.at the SpnngfieJg _ToWJJ._ship Hall, 650 Broadway, Davisburg, MI. ·. · · . ·. . ·

Document Review

This five-year review included a review of relevant documents including Operation and Maintenance . (O&M) records and monitoring data. The following is ;:i. list of documents reviewed:

• 1994 Springfield Township Site Groundwater Recovery and Treatment System Operation and Maintenance Plan

• 1994 Construction Completion Report Groundwater Recovery And Treatment System Springfield Township Site

• 1990 ROD

• 1993 ESD

• 1998 ROD Amendment (AROD)

• 1998 Consent Decree for Remedial Action and Cost Rec·overy

• 2008 Additional Site Investigation Work Plan

• 2010 Additional Site Investigatfon Report

• 2011 Engineering Evaluation/Cost Analysis

• 2013 Air Sparging Pilot Test Evaluation Report

• 2013 Semi-Annual Groundwater Monitoring Report

9

• 2014 Supplemental Investigation Work Plan

Data Review

TCE, lead and arsenic have been detected above the RAS.in the past five years. Lead was detected once in October 2012 in MW-3D, and arsenic has been detected in MW-IDR. Nevertheless, lead and arsenic were not detected above the RAS in the most recent groundwater sampling.

Groundwater monitoring data from the 2010 Additional Site Investigation Report October and the 2013 Semi-Annual Groundwater Monitoring Report indicates that TCE is the only contaminant of concern on-site above the RAS. Currently three wells, MW-105, MW-401-3, and MW-304S, have TCE concentrations above the RAS. Nevertheless, Figures 1 and 2, developed from nine soil borings completed to delineate the extent ofTCE in groundwater and soil for the 2010 Additional Site Investigation Report, depict the inferred horizontal extent of residual TCE contamination extending hundreds of feet beyond the TCE found in MW-105 and MW-401-3, and TCE was not detected in GZA07SB-7, GZA07SB-8, or GZA07SB-9 south ofMW-304S in the 2010 Additional Site Investigation. TCE above the RAS was discovered in MW-304S in October 2012, after the AS/SVE pilot study. The AS/SVE pilot study included a short-term test, conducted between December 2 and December 9, 2012, and a long-term test, conducted between May 1, 2012 and August 9, 2012.

The TCE found in MW-304S is of concern because it is beyond the southern boundary of the fenced area, and upgradient of historically recognized sources. The PRPs have proposed that the TCE was pushed upgradient by groundwater mounding generated by the 2012 AS/SVE pilot test.· This is entirely plausible, and consistent with the time of appearance, but MDEQ has questioned whether modifications to the injection well, IW-3; are responsible for the. shift in TCE and whether continued injection at IW-3 · will exacerbate the problem. The April 29, 2014 Supplemental lnvestigationWork-Plan currently under review proposes the installation of a new monitoripg well between IW-3 and MW-304S to ascertain whether the re.injection of treated groundwater at IW-3 is likely to have a long-term influence on TCE concentrations south of the fenced area. The Summary of Groundwater Sampling Results (provided in Appendix B) shows TCE concentrations in MW-304S are currently stable or declining, and the closest potential for human exposure is farther upgradient, approximately 1000 feet to the south. Should future observation and sampling indicate IW-3 is responsible for increa.Sing concentrations in MW-304S, EPA will consider modifications to the injection system or surface water discharge of treated groundwater:

10

Site Inspection

The Springfield Site inspection was conducted on 6/25/2013. In attendance were Bill Ryan, EPA; Mary Schafer and Chuck Graff, MDEQ; and Todd Fracassi, Jim Cai, and Julie Groenleer representing the PRPs. The purpose of the inspection was to assess site conditions and the protectiveness of the remedy.

The inspection team reviewed the groundwater extraction and treatment system, site fencing, and overall condition of the Springfield Site. The Springfield Site inspection identified nothing out of the ordinary. The following aerial photo demonstrates that the soil cap is generally well maintained and the Springfield Site is accessible by authorized personnel for operation and maintenance of critical infrastructure:

11

Interviews

No interviews were c.onducted for this FYR due to lack of community interest.

IV. TECHNICAL ASSESSMENT

Question A: Is the remedy functioning as intended by the decision documents?

YES-This FYR finds that the remedy is currently functioning as required by.decision documents, and progress is being made in achieving cleanup standards. The containment system and O&M are adequate, and the PRPs are currently conducting supplemental investigations and exploring methods to accelerate contaminant removal. Access controls are in place and effective, and a deed restriction has been filed with the county, as required by the Consent Decree. The PRPs are also developing a new restrictive covenant that conforms to state requirements.

Should investigations demonstrate the feasibility of accelerated contaminant removal, the installation of a full-scale AS/SVE system will help to remove residual contamination that is currently trapped in the capillary fringe and adjacent vadose zone. This contamination is not effectively addressed by the groundwater extraction and treatment system, and is remobil~zed by fluctuations in the water table, thereby delaying the attainment of RASs.

Question B: Are the exposure assumptions, toxicity data, cleanup levels, and remedial action objectives (RA Os) used at the time of the remedy section still valid?

YES-- exposure-assli111ptions, toxiCity estiiTiates, cleanup.levels, and.RAOs used to develop J990 ROD .. and 1998 ROD Amendment are still valid. There have been no significant changes to standards or matters to be considered. There have been no changes in standardized risk assessment methods, · exposure pathways, or other contaminant characteristics that could affect the protectiveness of the remedy. Vapor intrusion is highly unlikely at this site because there are no habitable structures within 100 feet of delineated groundwater contamination.

Question C: Has any other information come to light that could call into question the protectiveness of the remedy? ­

NO-· No new ecological risks have been discovered, there have been no impacts from natural disasters, and no other information has come to light that could affect the protectiveness of the remedy.

Technical Assessment Summary

The remedy is currently functioning as intended by the decision documents. The exposure assumptions, toxicity data, cleanup levels, and RA Os used at the time of the remedy section are still valid. No other information has come to light that could call into question the protectiveness of the remedy.

12

V. ISSUES/RECOMMENDATIONS AND FOLLOW-UP ACTIONS

Table 4: Issues and Recommendations/Follow-up Actions

OU# Issue

01/Site TCE above the RAS wide has been recorded

approximately 50 feet south of the Springfield Site boundary in MW­304S since October 2012.

01/Site Previously identified wide deficiencies in the

remedial action that mclude: inadequate characterization of · residual containi.nation~ questionable effectiveness of the groundwater extraction system, questionable effectiveness of the Soil Vapor Extraction (SVE) system, questionable effectiveness of the Air Sparging system ...

01/Site Site sampling and wide O&M plans need to

be updated to reflect current protocols.

Recommendations/ Follow-up Actions

Closely monitor the situation to ensure that conditions continue to improve, respond immediately if they deteriorate, and consider the potential effects of groundwater mounding in the design of any supplemental remedial efforts.

EPA will require that the necessary characterization and optimization work is completed

Update Site Sampling and O&M plans.

Affects Protectiveness? Party Oversight Milestone (YIN)

Responsible Agency Date Current Future

PRPs EPA/State 9/30/2015 No Yes

PRPs EPA/State 9/30/2015 No Yes

PRPs EPA/State 9/30/2015 No Yes

13

,... Affects Protectiveness?

OU# Issue Recommendations/ Follow-up Actions

Party Responsible ·

Oversight Agency

Milestone . Date

(YIN)

Current Future

01/Site wide

A review of site I Cs is needed to ensure

Finalize and record UECA covenant;

PRP/EPA EPA/State 9/30/2015 No Yes

that the remedy complete an ICIAP. continues to function as intended and that effective procedures are in-place for long­term stewardship of the Springfield Site.

In addition, the following recommendations were identified during this FYR that could improve the effectiveness of the remedy and accelerate the close out of the Springfield Site, but do not affect current nor future protectiveness of the remedy:

• Finalize the 2014 TCE supplemental investigation work plan, complete the investigation, and construct a full-scale AS/SVE system to accelerate the removal of residual TCEs.

VI. PROTECTIVENESS STATEMENT

OU I /Sitewide Protectiveness Statement

Protectiveness Determination: Short-term Protective ·

Protectiveness Statement: The Springfield Site remedy currently protects human health and the environment in the short­term. The primary contaminant ofconcern remaining on-site above Remedial Action Standards (RASs) is trichloroethylene (TCE), and EPA is currently negotiating with signatories to the 1998 Consent Decree (CD) to optimize _remedial measures and accelerate the removal of residual contamination. To ensure protectiveness in the long-term residual contamination must be accurately delineated and the adequacy of contaminant capture must be confirmed. In addition, groundwater extraction and treatment (or an equivalent remedial measure) and environmental ,monitoring must continue until remedial standards are attained, and a new restrictive covenant should be finalized and recorded. Compliance with existing and planned ICs that prohibit interference with the remedy and limit groundwater use is also necessary to ensure long-term protectiveness of the remedy. An Institutional Control lmplementatiOn Assurance Plan (ICIAP) to ensure long-term stewardship should also. be developed.

VII. NEXT REVIEW

The next five-year review report for the Springfield Township Dump Superfund Site is required five

14

years from the completion date of this review.

15

APPENDIX A - EXISTING SITE INFORMATION

SITE CHRONOLOGY

Event Date Initial Discovery of Problem or Contamination Mid 1970's Pre-NPL Responses 1979-1980 Final NPL Listing September 8, 1983 Remedial Investigation/Feasibility Study Complete July 1990 ROD Signature September 29, 1990 Remedial Design Start March 15, 1991 AOC for Remedial Design March 20, 1992 Remedial Design Complete December 11, 1992 On-site remedial action construction start December 11, 1992 Unilateral Administrative Order for Groundwater RA November 10, 1993 ESD November 18, 1993 ROD Amendment Signature Date June 10, 1998 Consent Decree for Remedial Action and Cost Recovery September 14, 1998 First Five-Year Review July 2, 1999 Construction Completion Date August 25, 2000 Second Five-Year Review September 29, 2004 Third Five-Year Review September 14, 2009

BACKGROUND

Physical Characteristics

The Springfield Site is located on a densely wooded, 12-acre rural residential lot near Davisburg, Michigan Davisburg and Springfield Township are located in northwest Oakland County. Approximately 4 acres of the Springfield Site were used for unauthorized chemical waste disposal during the 1960's. There are about 320 homes within one mile of the Springfield Site, with the nearest residence located approximately 800 feet away. All homes in the area are served by private wells.

Hydrology

The Springfield Site lies on a northeast-southwest trending pitted outwash plain. Proximal surface water bodies include Big Lake to the northeast, with White Lake and Duck Lake to the southwest. Wetlands in the area are situated in glacial kettles created by the most recent retreat of the Laurentide ice sheet. Water levels in these wetlands are several feet higher than the local water table and appear to have little influence on the groundwater flow regime.

16

The unconsolidated deposits consist of well-sorted fine to coarse-grained sand with some silt-sized particles. These deposits extend to a depth of 140 to 150 feet. Underlying these sandy outwash deposits is a layer of interbedded sands and clay, which extends from 150 to 17 5 feet. A seismic survey indicates bedrock is about 350 feet below ground surface (BGS).

Groundwater affected by the Springfield Site is in an unconfined aquifer, and generally flow northeast towards Big Lake, with localized mounding present in the vicinity of monitoring wells MW-302S, MW­6, and MW-203. Depth to:groundwater in the area varies from approximately 70 to 100 feet.

Land and Resource Use

The Springfield Site is in a rural, residential area with about 320 homes within one mile. Groundwater underlying the Springfield Site is first encountered in an unconfined aquifer. The depth to the local water table varies from about 70 to 110 feet beneath the surface, consistent with the rolling topography .

. Groundwater in the unconfined aquifer generally flows northeast towards Big Lake. Residences surrouI)ding the Springfield Site rely on groundwater for their drinking water, but none currently test positive for contamination related to the Springfield Site. There are currently no groundwater use restrictions beyond the bounds of the Nickson property.

History of Contamination

Industrial waste disposal at the Springfield Site was documented between 1966 and 1968, but disposal may have occurred over a longer period of time. An unknown amount of industrial waste was drained into excavated pits or natural depressions on approximately 4 acres of the Nickson property and

. app~oximately 1,500 barrels were also abandoned there. Waste wa.S dumped by haulers undercontract with the waste generators. The· first official notification of illegal dumping was made by the supervisor of Rose T?wnship in a letter to the Oakland County Health Department (OCHD) in June 1968.

Initial Response

The OCHD sent a notice to the property owner, Mr. Joseph Nickson, in °July 1971 requiring corrective action. A Pollution Emergency Alerting System (PEAS) complaint was filed by the OCHD with the '

0

Michigan Department of Natural Resources (MDNR) in April 1979. MDNR sampled drums at the Springfield Site in June 1979 and identified paint sludge, solvents, PCBs, oil, and grease. MDNR also sampled well water at private residences near the Springfield Site and found low levels of tetrachloroethene (PCE) and trichloroethene (TCE), VOCs associated with the Springfield Site.

The Springfield Site was declared an environmental emergency by the State of Michigan's Toxic ·Substances Control Commission (TSCC) and MDNR began the excavation and removal of drums from the Springfield Site in September 1979. A special appropriation was made by the State legislature for an investigation and cleanup of affected 'groundwater in December 1979. The 1,500 55-gallon drums were removed by July 1980.

From 1979 to 1980, 711 tohs of contaminated soil was excavated and taken to a licensed hazardous waste facility in Alabama, including much of the material from the disposal pit located in the central portion of the Springfield Site. Some waste was left on-site because of insufficient funding. This removal action left the disposal pit area several feet below the original grade, and sandy fill material was brought in to re-grade the excavation. ·

17

MDNR characterized the plume of contaminated groundwater beneath the property and built a fence around the disposal area in 1980. EPA inspected the Springfield Site in 1982 and placed it on the National Priorities List (NPL) in September 1983. MDNR conducted a Remedial Investigation (RI) from 1985 to 1989 to determine the nature and extent of soil and groundwater contamination. The RI included a risk assessment to determine the potential human health risks. In July 1990, a Feasibilit)r Study (FS) Report was completed and a: Proposed Plan for site cleanup was released to the public for comment.

Basis for Taking Action

Hazardous substances have been released at the Springfield Site. These substances include:

Soil (Surface and Subsurface) Groundwater

PCBs Arsenic Arsenic Lead Barium Toluerie Lead Trichloroethylene (TCE)

· · Dieldrin 1,1-Dichloroethy lene ( 1, 1-DCE) Toluene 1,1-Dichloroethane (1,1-DCA)

Chlorobenzene 1,1, I -Trichloroethane ( l,1,1-TCA) Trichloroethylene

Exposure to soil and groundwater containing hazardous substances is associated with significant human ·· health risks due to the exceedance of EPA' s risk management criteri'a for reasonable maximum exposure · ·

. "- . ·scerianos. EPA detenriiried.tha:t.hllinan health i:-isks were-highest for ihgestibn ofcontaniinants'in .· groundwater. Soil contamination also posed a risk to human health through dermal contact, ingestion, and inhalation of contaminated dust or vapor. Current and future potential impact to the environment are primarily the adverse effects to terrestrial wildlife which inhabit or feed in the fenced site area where high levels of contamination were detected in surface soils. The Springfield Site fence minimizes the intrusion of large mammals and thus their contact to contaminated.soil or ingestion of on-site flora. ~ampling of nearby Kettle Wetlands indicated no impact from site-related activities. No critical habitats or endangered species are associated with the Springfield Site.

REMEDIAL ACTIONS

Remedy Selection

A ROD was signed on September 29, 1990. RAOs were developed from data collected during the RI. The remedial actions required by the ROD included:

• Excavation and on-site incineration of contaminated soils

. • Installation and operation of a Soil Vapor Extraction (SVE) system to remove VOCs from site soils ·

• Installation and operation of a groundwater extraction and treatment system

18

• Extension and maintenance of an existing fence surrounding the Springfield Site.

To achieve the RAOs, the 1990 remedy specifies the following:

• Excavation and thermal decontamination of soils to. remove PCBs, VOCs, Semi-VOCs, and pesticides from the source area

• Solidification of incinerator ash according to Applicable or Relevant and Appropriate Requirements (ARARs)

• Solidification of soils contaminated only with metals

• Re-deposition of ash and treated soil on-site (the ash either stabilized to make it inert prior to on­site disposal or placed in a properly designed solid waste unit on-site)

• Re-contouring of the excavated areas and control of the ash or dust emissions

• Installation and operation of a groundwater extraction and treatment system that uses carbon adsorption to treat the groundwater before re-injection into the aquifer

EPA issued an Explanation of Significant Differences (ESD) on Novembe.r 18, 1993, which established the following numeric values for the background concentrations of lead and arsenic in groundwater:

• Arsenic 20.1 ppb

• Lead 50 ppb

A ROD Amendment (AROD) outlining modifications to the estimated volume of soil treated on-site, revising soil and groundwater cleanup standards-, modifying the method of on-site treatment for contaminated soils, and requiring deed restrictions on a portion of tlie Springfield Site was signed on June 10, 1998. These modifications were based on additional studies documented in the administrative record. The 1998 ROD Amendment specifies the following:

• All soils that contain semi-volatile organic contaminants (such as PCBs) in excess of the .Remedial Action Standards (RASs) will be excavated to a ciepth of 6 feet.

• All soils containing PCBs over 50 ppm will be excavated, regardless of depth.

• Excavated soils contaminated with semi-VOCs will be treated using either soil washing, low -temperature thermal desorption, or solvent extraction methods. Treated soil containing residual levels of up to 5 ppm of PCBs and 620 ppb of dieldrin (a pesticide) can be backfilled into the excavated area.

• Treated soil that exceeds the RAS for metals will be solidified and backfilled on-site or disposed of off-site at a permitted facility.

• All areas of excavation will be returned to grade, covered with a 1-foot thick, clean soil cover (cap); and re-vegetated.

19

• All soils on the portion of the Springfield Site that is the Nickson property, outside of the area of semi-volatile organic contamination, which exceed the RAS for metals to a depth of 1.5 feet, will be excavated and either treated and backfilled on-site or disposed of at a permitted facility.

• The future use of the south 500 feet of the Nickson property will be restricted to prevent activities that would disturb the soil cap or the backfilled soils.

• All contaminated soil outside of the Nickson property will be excavated to a depth meeting the RAS, and either solidified and backfilled on the Nickson property or disposed of at a permitted facility. Soil treatment residuals will not be placed on the Nickson property.

• Soil containing VOCs will be treated using the soil vapor extraction method selected in the 1990 ROD, but cleanup levels will be adjusted to current State standards.

• Groundwater extraction and treatment will continue pursuant to the 1990 ROD, but cleanup levels will be adjusted to current State standards.

Final cleanup goals for the Springfield Site as recorded in the 1998 AROD are as follows:

Remedial Action Standards for Semivolatile Organics in Soil

Contaminant 1990ROD 1998AROD PCBs 1 ppm 1 ppm(a)

Dieldrin - 80ppb 620 ppb(c) ­

Remedial Action Standards for Metals in Soil

Contaminant 1990ROD 1998AROD Arsenic Background 9 ppm(b) Barium 100 ppm 30~00 ppm(c)

Lead Background 400 ppm(c)

Remedial Action Standards for Volatile Organics in Soil

Contaminant 1990ROD 1998AROD Toluene 0.8 ppm 16 ppm(d)

Chlorobenzene 208 ppm 2 ppm(d)

Trichloroethylene 0.06 ppm 0.01 ppm(d)

Remedial Action Standards for Groundwater

Contaminant 1990ROD 1998AROD Toluene 0.04ppm 1 ppm(e)

Trichloroethylene 3 ppb 5 ppb(e)

20

Notes: ppm =parts per million ppb =parts per billion (a) 1 ppm first 6 feet and 50 ppm below 6 feet (b) Background /eve/for arsenic established in 1991 RDF/ (c) Dermal contact standard, MERA Operational Memo #8, Rev. 4, June 1995 (d) Groundwater protection standard, MERA Operational Memo #8, Rev. 4, June 1995 (e) Groundwater standard, MERA Operational Memo #8, Rev. 4, June 1995

Remedy Implementation

EPA initiated the Remedial Design (RD) for the groundwater and SVE systems in 1992. On March 20, 1992, EPA and the PRPs entered into an Administrative Order on Consent (AOC) to complete the RD for the groundwater and SVE systems, calculate background levels in groundwater for lead and arsenic, and pilot test the SVE system. On November 12, 1992, EPA and the PRPs entered into another AOC requiring the PRPs to pay $1,157,373.04 in past costs incurred by EPA and the U.S. Department of Justice.

The RD was finalized on December 11, 1992. On November 10, 1993, EPA issued a Unilateral Administrative Order (UAO) to the PRPs to construct and operate the groundwater treatment system approved by EPA under the 1992 AOC for RD. The PRPs completed construction of the groundwater extraction and treatment system in 1994. A pre-final inspection was conducted by the EPA in June 1994, and EPA determined that the groundwater .extraction and treatment system was operating as intended. The PRPs operated the system under the UAO until 1998. ·

In March 1998, the PRPs entered into a CD with EPA to implement all remedial actions presented in the 1998 ROD Amendment and to pay certain remaining past and future oversight costs. The 1993 UAO was tepn.inated by EPA upon entry of the CD.

During the summer of 1999, the PCB-contaminated soils were excavated and treated using an on-site soil washing system. Most of the treated soil achieved treatment standards and was replaced. Soil that did not achieve treatment standards was either re-treated or disposed of in a licensed, off-site facility. A one-foot cover of clean soil was then placed over the treated area and grass was planted.

SVE equipment and an air sparging system were installed in May 2000. EPA conducted a final inspection of the SVE and air sparging systems on August 22, 2000, and determined that the systems were operating as designed.

The following is a summary of remedial actions:

• A total of 12,000 cubic yards of soil contaminated with SVOCs in excess of the RAS were excavated, treated and backfilled onsite or disposed of off-site at a permitted facility.

• Excavated soils contaminated with ·semi-volatile organics were treated using either soil washing, lowtemperature thermal desorption, or solvent extraction methods. Treated soil containing residual levels of up to 5 ppm of PCBs and 620 ppb of dieldrin were backfilled in the excavated areas.

21

• Treated soil that exceeded the RAS for metals was solidified and backfilled onsite or disposed of off-site at a permitted facility.

• All excavated areas of were returned to grade, covered with a 1-foot thick layer of clean soil, and re-vegetated.

• All soil on the Nickson property outside of the area of semi-volatile organic contamination that exceeded the RAS for metals to a depth of 1.5 feet, was excavated and either treated and backfilled onsite or disposed of at a permitted facility.

• The future use of the south 500 feet of the Nickson property has been restricted to prevent activities that would disturb the soil cap or the backfilled soils.

• Soils containing VOCs were treated using soil vapor extraction.

• Groundwater contami,nation is being addressed by an extraction and treatment system.

EPA has determined that all RA construction activities were performed according to specifications. The entire Site achieved construction completion status when the Preliminary Close-Out Report was signed on August 25, 2000. After groundwater RASs have been met, EPA will issue a Final Close Out Report (FCOR) and delete the Springfield Site from the NPL.

System Operation/Operation and Maintenance

The PRPs installed and are operating the ground water extraction and treatment system pursuant to the 1998 Consent Decree. The PRPs are required ·to ·operate the ground water e:Xfraction and treatment system in accordance with the June 16, 1994 Final Operation and Maintenance Plan for the Ground

·Water Recovery Treatment System, as revised by the July 1994 Final Ground Water Monitoring and Sampling Plan. O&M is performed by the PRPs in compliance_with the CD and Scope of Work. The primary components of the remedy addressed by O&M are the groundwater treatment system and the­soil vapor extraction/air sparging system. The PRP's contractor conducts routine weekly inspections of the Springfield Site facilities, and submits quarterly progress reports to EPA and MDEQ. In addition to the quarterly progress reports, the 1994 O&M Plan also requires semi-annual groundwater monitoring reports.

22

APPENDIXB

Site Location Map, Recorded Deed Restrictions, and Summary of Groundwater Sampling Results

23

- - ---

SOURCE: SCANNED USGS TOPOORAPHIC QUADRANGLE PROVIDED BY THE MICHIGAN CENTER FOR GEOGRAPHC INFORMATION, MICHIGAN DEPARTMENT OF INFORMATION TECHNOLOGY DATA ACCESSED OCTOBER 2010

•·•· USGS 0 500 1,000 2,000 3,000

QU~GU: Feet -LOCATION - ­LOCUS PLAN

(USGS 7.5-MINUTE TOPOGRAPHIC QUAD)

SPRINGFIELD TOWNSHIP SUPERFUND SITE DATE: 12-01-2010 OAKLAND COUNTY, MICHIGAN

JOB NO.

07.0061239.50

FIGURE NO.

1

24

llBER19205PC2at

.. .... EPA~-·~~.. :.. :

•10111 ~

DEED RESTRICl10NS .. ·.:.:··::..-.:>.;.;;_=::.. >: .···

CARRlNE NICKSON, a single woman, wbo resides at 129SS Woodland Trail, Davisburg, Ml 483SO, for and in consideration of r'eccipt of the sum of Five Thousand DoJlan (SS,000.00) and other good and valuable consideration, hereby imposes restrictions on the following desc:n'bed teal estate located within the Township of Springfield, County ofOakland, State ofMichig~ descn'bcdas~',.'. ''' ·:< >'·

...The South Five Hundred feet (500') ofT4N, RBE, SEC 3l NW. V. oij\'V .%.; ·•••• ' ... ..

EXC W ~ofNW % OF SW%

·.. '' : A portion ofParCel ID No.: 07-32-300-009 . :·.:.:.:=~:;:::'<:i_;::-:.<·.:·:·:·::·Y<: .. :· :·::·::-:_;.:t;-:::ii·. ::::. ;-; ..... .: .. :.:.·.. :·,:,::::;·:·:

There shall bC no use of du:.. above-d~"bed property which .would result in filling, grading, excavating, mining. drilling, building, stmage or disposal nfjUilk, debris~' ~~ inoperable vehicles· or equipment, or other use or development which, would disturb soils, subsoils, or groundwater, except for activities, approved by tbt:: United States Envii'orimeDtal Protection Agency as part of required remedial action foi~,,~· '· ' .. ·'.· : · ·

. The ~bove--descn"bed ~Shau be··~~ held, ttansferml,. sold, conveyed, used and/or '· OcaipiedsubjCcttotheserCstrictiom.. : .•.• <·O:; · ,·

These restric:tions'mall ~-widl the land and shall ,,;';~ding upon all pers~ ~viJig right, tide or interest in any part of the descnbed property. Any dCed, lease or· other transfer document will specifically refer to theSe restrictions, amendments or modifications, ifany, by stating h'ber and ·.-&ea of the Oakland County records in which Ibey are recorded. ··

·111e Umcid Smtes of America, Smre of Michigan, Township of Springfield BDJ1/or olhcr authorized rqHeicntatives may enforce the restrictions ·set forth herein by legal action in a court of competent jurisdiction. Access over and through the descn"bcd property is hereby. granted to the United Slates of America, State of Michigan. Towmhip ofSpringfield.imdlor other autborized represeD.tatives for the purpose of inspecting the property to ioSURi 'eompliance Wi~ and allow enforcement of, these restrictions. .•. , :·-<"'.;,'·,: :::.,.,.,,,.'>:., .>•!:>",':·: :;..._, ,_,.,.,,-:,.........::~> c:::::>"·. '', ..

. : : "::·:·:::<:> ~-~:-:·;:-: .. :. ....:.:::.:: ~ ::_:.._:: .~.

These restrictions shall not be amended, modified or tmniaated except by written instrument by and between the lhen cumnt owner(s) of the property and the Uni~ Staa Environmental Protection Agency, Michigan Department of Environmental Quality and the Township of Springfield, or their successon.

' ~11!<1.A~ CO!JNTy : ···.. -- ··- .... "·· ~E-SUR~vSCERTIACliJI::

.. ' • ~' ,~- :·~ LIENS or TITI.eS Page 1 of2 -~ , '}~L.;~!°: ~I,

;,:r·~-~ ~"'.. ~"""'.: ···.

-IN \-7ITNES3 WHEREOF, ~rri"& Nit.t'.!i ~n bas caused these Deed Restrictions to be '

executed this .Ld_ day of IJdolH.r , 1998.

CARRINE NICKSON

.. : ..... ::: ···>:·.··

.. :.;.: ::··

s+>.TE oFMicmGA:N · > , .., . : .., . ) SS:

COUNTY OF OAKLAND :· )

Before me, a Notuy Public in and for said County and State, perscmally appeared CARRINE NICKSON, and she acknowledges the execution ofthe foregoing Deed Restrictions.

. Wi~~.~~;lSelli~ :ls~·d.1~i 'M~~99s. ···;; .:·: .. ~.··:

.j. ; ···~· ': :,· : :' IJ •'

c;>taI)'Public :'s..:• ·•• c.,k,~c..'(: e.. .~·~' \ My Commission Expires: '1- \(, _'Z. 001 .

. ·.:.:: :~.. :: .: .. ::·::::·: .: ::·· .. ::·::= .::;. ....

.. ... ·:

Prepared by and return to: ; , ·,· ·· ,.... Keith J;:Lerminiawc ,., ....- .,., " Dickinson:Wright PLLC :.:... '::·::::. .:: .,.,,_,, ..... .....

SOO WoociW8rd Avenue, S~~400i) ::· Detroit, Ml 482~3425

.... ::_.: =:1;: ::::·:::: ...··,./·.:: ...·,;· .. ~ : .::: :: : . :

1•··;,:···

: I·'.

,.. ,.:

.. :_

TABLE3

SUMMARY OF GROUNDWATER SAMPLING RESULTS SPRINGFIELD TOWNSHIP SUPERFUND SITE

Well Number Sample·Date Sample I.D.

Number TOLUENE TCE 1,1-DCE 1,1,1-TCA 1,1-DCA CHLORO­BENZENE

AS J LEAD 3

RAS (ug/L) 1,000 5 7 200 880 100 20 50

MW-IDR 7-Jul-94 A4346903 < I < I < I < I 49 J < I < 3 < 2

MW-IDR 5-0ct-94 940888-01 < 0.5 u < 0.5 u < 0.5 u < 0.5 u 41 < 0.5 u 21.l < I u MW-IDR 12-Jan-95 950020-06 < 0.5 u < 0.5 u < 0.5 u < 0.5 u 49 < 0.5 u 16.5 J < I u MW-IDR 16-Apr-95 950210-33 < 0.5 u < 0.5 u < 0.5 u < 0.5 u 35 < 0.5 u 5.1 B < 2 u MW-IDRDUP 16-Apr-95 9502J0-34 < 0.5 u < 0.5 u < 0.5 u < 0.5 u 36 < 0.5 u 6.1 B < 2 u MW-IDR I 3-Jul-95 950488-07 < 0.5 u < 0.5 u < 0.5 u < 0.5 u 29 < 0.5 u 16.6

MW-IDR J l-Jan-96 960004-15 < 0.5 u < 0.5 u < 0.5 u < 0.5 u 32 < 0.5 u 13.4 < I u MW-IDR JO-Jul-96 960535-06 < 0.5 u < 0.5 u < 0.5 u < 0.5 u 19 < 0.5 u 16.4 < 2 u IMW-IDRDUP JO-Jul-96 960535-08 < 0.5 u < 0.5 u < 0.5 u < 0.5 u 22 < 0.5 u 16.5 < 2 u MW-IDR 16-Jan-97 WW2648212 < 0.05 < 0.05 < 0.05 < 0.04 15 < 0.05 17 0.71 J

MW-IDR 12-Jul-97 WW2743054 < 0.5 < 0.5 < 0.5 < 0.5 17 < 0.5 13.2 < 2

IMW-IDR 15-Jan-98 WW2859267 < 0.5 < 0.5 < 0.5 < 0.5 14 < 0.5 17.7 < 2

IMW-IDR l l-Sep-98 85515-2 < 0.5 < 0.5 < 0.5 < 0.5 II < 0.5 15 < 2

IMW-IDR 17-Mar-99 E218847 < 10 < I < I < 10 < 10 < 10 < 5 < 3

IMW-JDR 5-0ct-99 - - - - - - - - -MW-IDR 14-Mar-OO E245048 < 10 < I < I < JO < JO < 10 < 5 < 3

MW-IDR 10-Nov-00 25-Aug-27 < 10 < I < I < 10. II < 10 < 5 < 3

IMW-IDR 25-May-01 22-Nov-65 < 10 < I < I < 10· II < 10 14 < 3

MW-IDR 15-Nov-Ol 23-Jul-03 < IO < I < I < JO 14 < 10 7.5 < 3

MW-IDRDUP 15-Nov-01 21-Jul-03 < 10 < I < I < 10 14. < 10 8 < 3

MW-IDR \ 30-May-02 J 7-Sep-39 < JO 1.3 < I < ·10 12 < IO 16 < 3

MW-IDR 6-Nov-02 13-Jul-75 < JO < I < I < 10 < 10 < JO II < 3

IMW-IDR 15-May-03 17-Mar-08 < 10 < I < I < JO II < IO 18 < 3

MW-IDR 6-Nov-03 25-Feb-55 < 10 < I ·< I < JO < 10 ' < JO < 5 8.7

MW-IDRDUP 6-Nov-03 l l-Mar-55 < JO < I < I < JO < IO < JO < 5 13

MW-IDR 21-May-04 24-Aug-90 < JO < I < I < JO < JO < JO < 5 3.7

IMW-JDR 9-Dec-04 26-Jun-36 < JO < I < I < JO < JO < JO 16 < 3

MW-IDR 2-Sep-05 9-Nov-81 < JO < I < I < JO < JO < Hi 12 < 3

MW-IDRDUP 2-Sep-05 10-Nov-81 <· JO < I < I < JO < JO < JO 12 < 3

IMW-IDR 14-Apr-06 0604274-03 < I < I < I < I .8.3 < I II 3.2

IMW-IDR 6-0ct-06 0610230-13 < I < I < I < I 6.2 < I - -MW-IDR 31-Jan-07 0702048-03 - - - - - - 14 5.2

MW-IDR 24-Apr-07 070447-06 < I "< I < I < I 6.7 < I 15 < 3

IMW-IDR 5-Nov-07 0711197-06" < I < I < I < I 7.1 < I 17 < 3

IMW-JDR 24-Apr-08 0804542-03 < I < I < I < I 7.1 < I 14 4

IMW-IDR ' J J-Nov-08 0811333-05 < I < I < I < I 6.5 < 1 19 < 3 MW-IDR 23-Apr-09 M82335-8 < 0.31 < 0.38 < 0.52 < 0.49 5 < 0.26 21.4 4.5

-IMW-JDR- Filtered 23-Apr-09 M82335-8A - - - - - - 20.2 < 1.8

MW-IDR 19-0ct-10 !010518-19 < 1.0 < 1.0 < 1.0 < 1.0 4.6 <. 1.0 18 < 3.0

MW-IDR 3-May-11 I J05132-04 < 1.0 < 1.0 < 1.0 < 1.0 2.3 < 1.0 < 5.0 47

MW-IDR - Filtered. 3-May-11 I J05132-04 - - - - - - < 5.0 < 3.0

MW-IDR 5-0ct-11 11 J0152-06 < 1.0 < 1.0 < 1:0 < f.O 3.2 < 1.0 20 < 3.0

MW-IDR 24-Apr-12 1204488-09 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 22 4.6

MW-IDR JO-Oct-12 1210230-02 < 1.0 < 1.0 < 1.0 < 1.0 3.3 < 1.0 25 < 3.0 MW-IDR 23-Apr-13 1304405-08 < 1:0 < 1.0 < 1.0 < 1.0 4.2 < 1.0 20 < 3.0 MW-JDR 8-0ct-13 1310241-01 < 1.0 < 1.0 < 1.0 < 1.0 4.4 < 1.0 20 3.4

MW-JSR 7-Jul-94 A4346902 < I I < I 12 8 "< I < 3 2 J MW-JSR 5-0ct-94 940888-02 < 0.5 u 0.8 < 0.5 U· 3 5 < 0.5 u < 2 u 216 MW-ISR \ 12-Jan-95 950020-04 < 0.5 u -< 0.5 u < 0.5 u I < 0.5 .u < 0.5 u < 2 JU < I u MW-ISR 15-Apr-95 950210-26 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u < 2 u MW-JSR 13-Jul-95 950488-08 < 0.5 u < 0.5 u < 0.5 u < 0.5 u 7 < 0.5 u < 2 u < 2 u MW-JSR­ 9-Jan-96 960004-05 < 0.5 u < 0.5 u <. 0.5 u < 0.5 u 7 < 0.5 u < 2 u < I u 11W-JSR JO-Jul-96 960535-05 < 0.5 u < 0.5 u < 0:5 u < 0.5 u JO < 0.5 u 5.2 B < 2 u 11W-ISR DUP 16-Jan-97 WW2648216 ·0.06 J < 0.05 < 0.05 < 0.04 3.7 < 0.05 4.8 J 1.66 J

11W-ISR 16-Jan-97 WW2648219 < 0.05 < 0.05 < 0.05 < 0.04 3.9 < 0.05 .< 1.7 1.39 J

11W-ISR 12-Jul-97 WW2743053 < 0.5 < o.5 < 0.5 < 0.5 II < 0.5 < 2 3.3

11W-ISR DUP 12-Jul-97 WW2743093 < 0.5 < 0.5 < 0.5 < 0.5 II < 0.5 < 2 4.7

11W-ISR 15-Jan-98 WW2859266 < 0.5 < 0.5 < 0.5 < 0.5 14 < 0.5 < 2 < 2 11W-ISR DUP 15-Jan-98 WW2859303 < 0.5 < 0.5 < 0.5 < 0.5 14 < 0:5 < 2 < 2

MW-JSR 1l-Sep-98 85515-1 < 0.5 < 0.5 < 0.5 < 0.5 12 < 0.5 < 2 2.5

MW-ISRDUP 11-Sep-98 85515-30 < 0.5 < 0.5 < 0.5 < 0.5 13 < 0.5 3.2 5.2

MW-JSR 17-Mar-99 E218845 < 10 < I < I < JO II < JO < 5 < 3 MW-JSR' 5-0ct-99 - - - - - - - - -

RcportTabla_OaollCl'2013_nn Page I of22 See Notes on Page 22

TABLE3

SuMMARY OF GROUNDWATER SAMPLING RESULTS SPRINGFIELD TOWNSHIP SUPERFUND SITE

Well Number Sample Date Sample I.D.

Number TOLUENE TCE 1,1-DCE 1,1,1-TCA 1,1-DCA CHLO RO­BENZENE AS 3 LEAD 3

RAS (ug/L) 1 000 5 7 200. 880 100 20 50

MW-30 8-Jul-94 A4349201 < 1 1 < 1 < I. < 1 < I < 3 35 MW-30DUP 8-Jul-94 A4349201 0.1 J I < I < 1 < 1 < 1 < 3 28 MW-30 5-0ct-94 940888-03 < 0.5 u 2 < 0.5 u < _0.5 u < 0.5 u < 0.5 U· < 2 u < 1.6 u MW-30 12-Jan-95 950020:07 < 0.5 u 1 < 0.5 u < 0.5 u < 0.5 u < 0.5 u· < 2 JU 10.7

MW-3D 15-Apr-95 950210-28 < 0.5 u < 0.5 u < 0.5 u < 0.5 u "< 0.5 u < 0.5 u < 2 u 15.6 MW-300UP 15-Apr-95 950210-27 < 0.5 u 0.6 < . 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u 18.4 MW-30 13-Jul-95 950488-01 < 0.5 u < 0.5·- u < 0.5 u < 0..5 u < 0.5 u < 0.5 u < 2 u 4.3

MW-3D ll-Jan-96 960004-J4 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u 4.8

IMW-30DUP J J-Jan-96 960004-J6 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u 3.6

IMW-3D 10-Jul-96 960535-02 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u 4.6 B 2.5

MW-3D 17-Jan-97 WW2648174 < 0.05 < 0.05 < 0.05 < 0.04 < 0.04' < 0.05 < 1.7 12.9 MW-3D OUP J7-Jan-97 WW2648J78 0.08 J < 0:05 < 0.05 < 0.04 < 0.04 < 0.05 < 1.7 J5

IMW-3o J2-Jul-97 WW2743056 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 2 2.3

MW-3DOUP J2-Jul-97 WW2743094 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 2 7.78

MW-3D J5-Jan-98 WW2859269 < 0.5 < 0.5 < 0.5 <· 0.5 < 0.5 < 0.5 < 2 3.67

MW-3D DUP l 5-Jan-98 WW28.59304 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 2 < 2

MW-3D l l-Sep-98 85515-4 . < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 2 4 MW-3DDUP l l-Sep-98 85515-31 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 :< 0.5 2.9 7.5

MW-3D 18-Mar-99 E2J8849 < 10 < I < J <: 10 < .JO < 10 < 5 < 3

MW-3D 6-0ct-99 E234151 < 10 < I < I < 10 < 10 < 10 < 5 < 3 MW-3D 14-Mar-OO E245046 < 10 < I < I <· 10 < 10 < 10 < 5 21 MW-30 8-Nov-02 4-Jan-77 < 10 < I < I <. 10 < 10 < 10 < 5 9.2 Mw-3DDUP 8-Nov-02 5-Jan-77 < 10 < J < I < 10 < JO < 10 < 5 ' 8.9

MW-3D 14-May-03 6-0ct-07 < 10 < I < I < 10 < JO < 10 < 5 ·1.1

MW-3D 18-May-04 25-Aug-90 < 10 < I < 1 < 10 < JO < 10 < 5 13

MW-3D 7-Sep-05 12-Nov-8i < 10 < I < J <­ 10 < 10 < 10 < 5 5.4

MW-3D 16-Jan-06 - - - - - - - < 5 35

MW-30 18-Apr006 0604326~05 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 16

MW-30 5-0ct-06 0610230-09 < 1.0 < 1.0 < 1.0 <: 1.0 < 1.0 < 1.0 - -MW-3D 31-Jan-07 0702048-01 - - - - - - < 5.0 II

MW-3D 23-Apr-07 0704477-05 < 1.0 < 1.0 < 1.0 < .1.0 < 1.0 < 1.0 < 5.0 5.4

MW'3D 5-Nov-07 . 0711197-02 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 12

MW-3D 24-Apr-08 0804542-06 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 3.0

MW-3D ll-Nov-08 0811333-04 •< 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 27

MW-3D 22-Apr-09 M82335-3 < 0.3J < 0.38 < 0.52 < 0.49 0.8 < 0.26 6.0 II

MW-3D - Filtered 22-Apr-09 M82335-3A - - - - - - 4.7 < 1.8

MW-3D 18,0ct-10 10105J8-02 < 1.0 < 1.0 < 1.0 < 1.0 2.5 < 1.0 < 5.0 16

MW-3D 2-May-11 1105132-02 . <: 1.0 < 1.0 < 1.0 < 1.0 2.7· < 1.0 < 5.0 < 3.0

IMW-30­ 5-0ctCll JlJ0152-14 < 1.0 < !.o' < 1.0 < 1.0 1.0 < 1.0 < 5.0 3.4

IMW-3o 26-Apr-12 1205050-12 < 1.0 < 1.0 < 1.0 < 1.0 < ·1.0 < 1.0 < 5.0 6.4

MW-3D 9-0ct-12 J210230-07 .< 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 80 MW-3D 24-Apr-13 1304463-03 < 1.0 < 1.0 < 1.0 < 1.0 < J.O < 1.0 < 5.0 12

MW-3D 9-0ct-13 1310241-03 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 5.3

-

Page 2 of22 See Notes on Page 22

TABLE3

SUMMARY OF GROUNDWATER SAMPLING RESULTS SPRINGFIELD TOWNSHIP SUPERFUND SITE

Well Number Sample Date Sample J.D.

Number TOLUENE TCE 1,1-DCE 1,1,1-TCA 1,1-DCA CHLO RO­BENZENE

AS 3 LEAD 3

RAS (ug/L) 11,000 5 7 200 880 100 20 50

MW-3S 7-Jul-94 A4346905 < I < I < I 8 8 < I < 3 36

MW-3S 5-0ct-94 940888-04 < 0.5 u < 0.5 u < 0.5 u I5 II < 0.5 u < 2 u 28.5

MW-3S I2-Jan-95 9500I2-2I < 0.5 u < 0.5 u < 0.5 u 18 10 < 0.5 u < 2 u 45.7

MW-3SDUP I2-Jan-95 9500I2-20 < 0.5 u < 0.5 u < 0.5 u 14 8 < 0.5 u < 2 u 65.4

MW-3S 15-Apr-95 9502I0-22 < 0.5 u < 0.5 u < 0.5 u I8 7 < 0.5 u < 2 u 38.5

MW-3S 13-Jul-95 950488-01 < 0.5 u < 0.5 u < 0.5 u 15 7 < 0.5 u < 2 u 18.6

MW-3S 11-Jan-96 960004-I9 < 0.5 u < 0.5 u 3 I5 7 < 0.5 u < 2 u I7.I

MW-3S IO-Jul-96 960535-0I < 0.5 u < 0.5 u < 0.5 u 26 5 < 0.5 u. 2.8 B 31.5

MW-3S 16-Jan-97 WW26482J7 < 0.05 0.1 J 0.05 J 17 4.9 < 0.05 < 1.7 4.2

MW-3S 12-Jul,97 WW2743055 < 0.5 < 0.5 < 0.5 13 4.2 < 0.5 < 2 36.3

MW-3S 15-Jan-98 WW2648217 < 0.5 < 0.5 < 0.5 16 4.9 < 0.5 < 2 J4:2

MW-3S 11-Sep-98 85515-3 < 0.5 < 0.5 < 0.5 I4 2.6 < 0.5 2.1 29

MW-3S J8-Mar-99 E218851 < 10 < I < I 17 < 10 < 10 < 5 < 3

MW-3S 6-0ct-99 E234152 < JO < I < J J5 < 10 < 10 < 5 5.5

MW-3S 14-Mar-OO E245045 < 10 < I J < I J9 < 10 < 10 < 5 < 3

MW-3S IO-Nov-00 26-Aug-27 <: 10 < I < J 16 < 10 < 10 < 5 6.1

MW-3S 25-May-OI 22-Nov-64 < JO < I < I 14 < 10 < JO < 5 23

MW-3S 15-Nov-01 I 9-Jul-03 < 10 <· 1. < I 17 < 10 < 10 < 5 < 3

MW-3S . 24-May-02 8-Sep-39 <· 10 < I < 10 16 < 10 < 10 < 5 < 3

MW-3S 8-Nov-02 3-Jan-77 < 10 < I < 10 13 < 10 < IO < 5 20

MW-3S 14-May-03 5-0ct-07 < 10 < I < I II < 10 < 10 < 5 16

MW-3S 6-Nov-03 27-Feb-55 < 10 < I < 10 ·< JO < 10 < 10 . < 5 20

MW-3S I8-May-04 26-Aug-90 < JO < I < JO 13 < IO < IO < 5 12

MW-3SDUP 18-May-04 12-Sep-90 < JO < J < IO 19 < 10 < 10 < 5 12

MW-3S 14-Dec-04 I l-Jan-38 < 10 < I < I < 10 < JO < 10 < 5 < 3

MW-3SDUP 14-Dec-04 12-Jan-38 < 10 < I < I < JO < 10 < 10 < 5 < 3

MW-3S 7-Sep-05 11-Nov-81 < IO < I < I 13 < 10 < IO < 5 < 3

MW-3S 13-Jan-06 - - - - - - - < 5 I4

MW-3S 18-Apr-06 0604326-04 < I < I < I 14 < I < I < 5 8.8

MW-3S 5-0ct-06 0610230-08 < I < I < I 13 < I < I - -MW-3S 31-Jan-07 0702048-02 - - - - - - < 5 8.3

MW-3S 23-Apr-07 070477-04 < I < I < I 13 < I < I < 5 3.8

MW-3S ·s-Nov-07 07J 1197-0J < J < I < I 14 < I < I ·< 5 8.2

MW-3S 25-Apr-08 0804542-07 < I < I < I 9 < I < J < 5 25

MW-3S J J-Nov-08 08J 1333-03 < I < I < I 8.5 < I < I < 5 16

IMW-3S 22-Apr-09 M82335-1 < 0.31 < 0.38 < 0.52· 6.8 < 0.23 < 0.26 < 3.2 7.6 MW-3S 18-0ct-IO JOI0518-0I < J.O < 1.0 < 1.0 4.4 < 1.0 < 1.0 < 5.0 3.4

IMW-3S 2-May-11 1105132-01 < 1.0 < 1.0 < 1.0 4.3 < 1.0 < 1.0 < 5.0 < 3.0

MW-3S 5-0ct-11 1110152-13 < 1.0 < 1.0 < 1.0 2.5 < 1.0 < 1.0 < 5.0 J 5 MW-3S 26-Apr-12 1205050-13 < 1.0 < 1.0 < 1.0 I.I < 1.0 < 1.0 < 5.0 5.8

MW-3S 9-0ct-J2 J210230-06 < 1.0 < 1.0 < 1.0 1.0 < 1.0 < 1.0 < 5.0 < 3.0

IMW-3S 24-Apr-13 1304463-02 < 1.0 < 1.0 < J.O 1.5 < 1.0 < 1.0 < 5.0 < 3.0

IMW-3S 9-0ct-13 1310241-02 < LO < 1.0 < 1.0 1.4 < 1.0 < 1.0 < 5.0 < 3.0 -

RCf"X!Tabla_0ct«a201~_nn Page 3 of22 See Notes on Page 22

TABLEl

SUMMARY OF GROUNDWATER SAMPLING RESULTS SPRINGFIELD TOWNSHIP SUPERFUND SITE

Wel!Nwnber Sample Date Samplel.D.

Nwnber TOLUENE TCE 1,1-DcE 1,1,1-TCA 1,1-DCA CHLORO­BENZENE

AS J LEAD 3

RAS (ug/L) 1,000 5 7 200 880 100 .20 50

MW-4DR 8-Jul-94 A4349203 < I I < 1 0.4 J < I < 1 < 3 II J

~-4DR 5-0ct-94 940888-05 < 0.5 u < 0.5 u < 0.5 u 0.4 J < 0.5 u < 0.5 u < 2 u < I.I u MW-4DR 12-Jan-95 950020-02 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 m 5.5

MW-4DR 15-Apr-95. 950210-24 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u 16.7

MW-4DR I 3-Jul-95 950488-04 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u· < 2 u 12

MW-4DR l 1-Jan-96 960004-18 < 0.5 u < 0.5 u < 0.5 u 2 < 0.5 u < 0.5 u < 2 u 9.6

MW-4DR IO-Jul-96 960535-11 < 0.5 u < 0.5 u < 0.5 u 1 < 0.5 u "< 0.5 u 4.8 B 8.4

MW-4DR l 7-Jan-97 WW2648175 < 0.05 < 0.05 < 0.05 1.7 0.46 J < 0.05 < 1 7 24.7

MW-4DR 12-Jul-97 WW2743058 < 0.5 < 0.5 < 0.5 2.4 0.55 < 0.5 < 2 33

MW-4DR 15-Jan-98 WW2859271 < 0.5 < 0.5 < 0.5 4 0.86 < 0.5 < 2 18.8

IMW-4DR l l-Sep-98 85515-6 < 0.5 < 0.5 < 0.5 5.9 < 0.5 < 0.5 < -

2 20

IMW-4DR 17-Mar-99 E218844 <" IO < I < I < IO < IO < IO < 5 < 3

IMW-4DRDUP 17-Mar-99 E218845 < IO < ·1 < 1 < IO < IO < IO < 5 < 3

MW-4DR 5-0ct-99 E234139 < 10 < 1 < I < IO < IO < IO < 5 7

MW-4DR 31-May-OI 29-0ct-66 < 10 < I < I 10 < IO < IO 5.2 576.

MW-4DR I6-Nov-OI 26-Jul-03 < 10 < 1 < I < IO < 10 < 10 < 5 25

MW-4DR 29-May-02 12-Sep-39 < 10 < I < I < IO < 10 < IO < 5 < 3

MW-4DR 7-Nov-02 15-Jul-75' < 10 < I < 1 < 10 < 10 < IO < 5 20

MW-4DR 15-May-03 4-Aug-08 < IO < I < 1 20 < IO < IO < 5 52

MW-4DR 4-Nov-03 6-Mar-55 < ·10 < I < I I9 < IO < IO < 5 27

MW-4DRDUP 4-Nov-03 9-Mar-55 < 10 < I < I 17 < IO < IO < 5 29

MW-4DR 21-May-04 27-Aug-90 < 10 < I < I 18 < IO < IO < 5 6.7

MW-4DR 9-Dec-04 I-Jul-36 < IO < I < 1 20 < 10 < IO < 5 40

MW-4DR I-Sep-05 2I-Sep-81 < IO < I < I 17 < IO < IO < 5 33

MW-4DR 14-Apr-06 0604274-04 1.3 < I < 1 .< 1 3.7 < I < 5 23

MW-4DR 3-0ct-06 0610230-05 < I < 1 < 1 < 1 3.7 < I - -MW-4DR 3 l-Jan-07 . 0702048-04 - - - - < 5 40

MW-4DR 24-Apr-07 0704477-07 < 1 < I < I < I 2.2 < I < 5 48

MW-4DR 8-Nov-07 071 I252-0l < I < I < I I8 < I < I < 5 180

MW-4DR 25-Apr-08· 0804542-10 < 1 < I < I II < I < I < 5 19

MW-4DR 12-Nov-08 "0811333-08 < I < I < 1 14 < 1 < I < 5 < 3.0'

MW-4DR 22-Apr-09 M82335-4 < 0.31 < 0.38 < 0.52 9.7 < 0.23 < 0.26 < 3.2 57.il

MW-4DR - Filtered 22-Apr-09 M82335-4A - - - - - - < 3.2 1.8

MW-4DR 19-0ct-IO IOI05I8-20 < I < I < 1 II < I < I < 5 36

MW-4DR- Filtered I9-0ct-IO IOI0518-20 - - - - - - < 5 < 3

MW-4DR 4-May-11 1105132-16 < 1 < 1 < I 8.5 < 1 < I < 5 18

MW-4DR 4-0ct-I 1 1110152-01 < 1.0 < 1.0 < 1.0 1.9 < 1.0 < 1.0 < 5.0 17

MW-4DR 26-Apr-12 1205050-05 < 1.0 < 1.0 < 1.0 5.0 < 1.0 < 1.0 < 5.0 14

MW-4DR - IO-Oct-12 I2I0230-09 < 1.0 < 1.0 < 1.0 4.5 < 1.0 < 1.0 < 5.0 18

MW-4DR 25-Apr-13 I304463-07 < 1.0 < 1.0 < 1.0 3 < 1.0 < 1.0 < 5.0 29

MW-4DR 9-0ct-13 1310241-05 < 1.0 < 1.0 < 1.0 3.1 I. I < 1.0 < 5.0 40

R.cpoitTablca_Oczo1x:r2013_nn Page 4 of22 See Notes on Page 22

TABLE3

SUMMARY OF GROUNDWATER SAMPLING RESULTS SPRINGFIELD TOWNSHIP SUPERFUND SITE

Well Number Sample ·Date Samplel.D.

Number TOLUENE TCE I,1-DCE I,I,I-TCA l,I-DCA CHLORO­BENZENE

AS 3 LEAD 3.

RAS (ug/L) I,000 5 7 200 880 100 20 50

MW-4SR 7-Jul-94 A4346901 < 1 2 < 1 15 < I < I < 3 333 J

MW-4SR 5-0ct-94 940888-06 < 0.5 u 7 < 0.5 u 18 < 0.5 u < 0.5 u < 2 u < I u MW-4SR 12-Jan-95 950020-01 < 0:5 u 12 < 0.5 u 24 < 0.5 u < 0.5 u < 2 JU 33:4

MW-4SRDUP 12-Jan-95 950020-03 < 0.5 u 17 < 0.5 u 36 ·< 0.5 u < 0.5 u < 2 JU. 36.3

MW-4SR 15-Apr-95 950210-23 < 0.5 u 12 < 0.5 u 23 < 0.5 u < 0.5 u < 2 u 16.6

MW-4SR 13-Jul-95 950488-04 < 0.5 u 13 < 0.5 u I9 < 0.5 u 0.9 < 2 u 21.7

MW-4SR I I-Jan-96 960004-1'7 < 0.5 u 33 < 0.5 u 27 < 0.5 u < 0.5 u < 2 u 2.7 B

MW-4SR IO-Jul-96 960535-IO < 0.5 u 29 < 0.5 u 21 < 0.5 u < 0.5 u 2.7 B 8.I

MW-4SR I6-Jan-97 WW26482I8 < 0.05 3S .< 0.05 21 0.16 J < 0.05 < 1.7 11.3

MW-4SR 12-Jul-97 WW2743057 < 0.5 so 0.53 23 < 0.5 < 0.5 < 2 8.9

MW-4SR I5-Jan-98 WW2859270 < 0.5 41 < 0.5 17 < 0.5 < 0.5 < 2 14.2

MW-4SR ll-Sep-98 85515-5 < 0.5 S6 < 0.5 I8 < o.5 < 0.5 < 2 8.6.

MW-4SR I7-Mar-99 E218846 < IO 70 < 1 < IO < IO < IO < 5 3.8

MW-4SR 5-0ct-99 - - - - - - - - -MW-4SR 30-May-OI 28-0ct-66 < IO 71 < I 13 < 10 < IO < 5 188.

MW-4SR 16-Nov-OI 24-Jul-03 < 10 61 < I I5 < io < IO < 5 I6

MW-4SRDUP I6-Nov-OI 25-Jul-03 < IO S8 < 1 14 < IO < IO < 5 17

MW-4SR 29-May'..o2 13-Sep-39 < IO 67 < 1 < 10 < IO < IO < 5. < 3

MW-4SRDUP­ 29-May-02 19-Sep-39 < JO 54 < 1 < IO < IO < IO < 5 < 3

MW-4SR 7-Nov-02 14-Jul-75 < 50 66 < 50 < 50 < 50 < 50 < 5 < 3

MW-4SR. 15-May-03 I9-Mar-08 < IO 100 < 5 22 < 10. < IO < 5 6.1

MW-4SRDUP 15-May-03 20-M:ar-08 < 10 100 < 5 22 < IO < 10 < 5 5.8

MW-4SR 4-Nov-03 28-Feb-55 < IO 67 < 2 I4 < IO < IO < 5 3.6

MW-4SR 21-May-04 28-Aug-90 < IO 60 < 5 12 < IO < IO < 5 3.2

MW-4SR 9-Dec-04 3-Jul-36 < IO S8 < I < IO < IO < 10 < 5 14

MW-4SR I-Sep-05 22-Sep-81 < IO 64 < 5 < IO < IO < IO < 5 < 3

MW-4SR I8-Nov-05 - - S8 - - - - - -MW-4SRDUP 18-Nov-05 - - S9 - - - - - -MW-4SR I4-Dec-05 - - 71 - - I - - - -MW-4SRDUP I4-Dec-05 - - 69 - - - - - -MW-4SR 12-Jan-06 - - 9.S - - - - - -MW-4SR I3-Apr-06 060427-02 < I 67 < I 4.4 < I < 1 < 5 I7

MW-4SR 3-0ct-06 0610230-03 < I 49 < I 4.I < I < I - -MW-4SR DUP 3-0ct-06 0702048-05 - - - - - - < 5 14

MW-4SR 2-Feb-07 06I0230-04 < I 48 < 1 4.2 < I < I - -MW-4SR 24-Apr-07 0704477-IO < 1 so < I 2.8 < I < I < 5 7.3

MW-4SR 6-Nov-07 071I197-11 < I 44 < I 2.2 < I < I < 5 15

MW-4SR 24-Apr-08 0804542-05 < I 32 < I < I < I < I < 5 45

MW-4SR 12-Nov-08 . 0811333-07 6.1 20 < I < I < I < I < 5 10

MW-4SRDUP 12-Nov-08 0811333-16 6 21 < I < I < 1 < I < 5 11

MW-4SR 22-Apr-09 M82335-5 < 0.3I 16.1 "< 0.52 0.58 < 0.23 < 0.26 <. 3.2 7.8

MW-4SR - Filtered 22-Apr-09 M82335-5A - - - - - - < 3.2 < 1.8

MW-4SRDUP 22-Apr-09 M82335-6 < 0.31. 11.S < 0.52 < 0.49 < 0.23 < 0.26 < 3.2 5.7

MW-4SR DUP - Filtered 22-Apr-09 M82335-6A - - - - - - < 3.2 < 1.8

MW-4SR 19~0ct-10 1010518-07 < 1.0 4.2 < 1.ci < 1.0 < 1.0 < 1.0 < 5.0 8.8

MW-4SRDUP I9-0ct-IO IOI0518-061 < 1.0 S.4 < 1.0 < 1.0 < 1.0 < 1.0 - -MW-4SR 4-May-11 I 105132-I5 < 1.0 43 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 63

MW-4SR 4-0ct-11 11 IOl52-02 < 1.0 2.3 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 7.8

MW-4SR 26-Ailr-12 1205050-04 < 1.ci 1.6 < 1.0 < 1.0 < 1.0 .< 1.0 < 5.0 < 3.0

MW-4SR IO-Oct-12 1210230-10 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 5.3

MW-4SR 25-Apr-13 1304463-06 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 3.5

MW-4SR 9-0ct-13 13I0241-04 < 1.0 < 1.0. < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 3.0

H:\Sital\Spiaaficlof\F,_y.,..~14C.....'GLA'.

Rqa!Tablm_OdaMf 2013_T3T3 Page 5 of22 See Notes on Page 22

TABLEJ

SUMMARY OF GROUNDWATER SAMPLING RESULTS SPRINGFIELD TOWNSHIP SUPERFUND SITE

Well Nwnber Sample Date Sample I.D.

Number TOLUENE TCE 1,1-DCE 1,1,1-TCA 1,1-DCA CHLO RO­BENZENE AS 3 LEAD 3

RAS (ug/L) 1,000 ·5 7 200 880 100 20 50

MW-5 6-Jul-94 A43472!6 < I < I < I < 1 · < I < 1 < 3 J 4

MW-5 4-0ct-94 940888-07 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u 19.5

MW-5 12-Jan-95 950012-07 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u < 5.8 u MW-5 14-Apr-95 950210-13 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u 3.1

MW-5 11-Jul-95 950474-01 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u 5.5

MW-5 IO-Jan-96 . 960014-04. < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u 4.2

MW-5 9-Jul-96 960530--03 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u 4.1 B < 2 u MW-5 16-Jan-97 WW2648204 0.06 J < 0.05 J < 0.05 < 0.04 < 0.04 < 0.05 < 1.7 5.2

IMW-5 1 l-Jul-97 WW2743078 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 2 7.2

MW-5 15-Jan-98 WW2859274 < 0.5 < 0.5 < 0.5 <. 0.5 < 0.5 < 0.5 < 2 < 2

MW-5 ll-Sep--98 85515-7 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 2 8.4

MW-5 · 16-Mar-99 E218836 < 10 .< I < 1 < 10 < 10 < 10 < 5 < 3

MW-5 6-0ct-99 E234150 <; 10 < I < 1 < 10 < 10 < 10 < 5 3.7

MW-5 14-Mar-00 E245043 < 10 < I < I < 10 < 10 < 10 < 5 < 3

MW-5 13-Nov-OI 8-Aug-02 < 10 < 1 < I < 10 < 10 < 10 < 5 5.4

MW-5 8-Nov--02 2-Jan-77 < 10 < I < I < JO < 10 < 10 < 5 22

MW-5 14-May-03 30-Jul-08 < 10 < I < I < 10 < 10 <. 10 < 5 4.1

MW-5 19-May-04 29-Aug-90 < JO < I < I < JO < JO < 10 < 5 < 3

IMW-5DUP 19-May-04 13-Sep--90 < 10 < I < I < 10 < 10 < 10 < 5 3.4

MW-5 30-Aug-05 12-Sep--81 < 10 < 1 < I < 10 < 10 < 10 < 5 9

MW-5DUP 30-Aug--05 13-Sep-81 < 10 < I < I < 10 < 10 < 10 < 5 II

MW-5 7-Apr-06 0604127--04 < 1 < I < I < I < I < I < 5 < 3

Mw-5 25-Apr--07 0705020--04 < I < I < I < I < I < I < 5 3.6

MW-5 22-Apr-08 0804511--02 < I < I < 1 < I < I < I < 5 110

MW-5 28-Apr--09 M82477-6 < 0.31 < 0.38 < 0.52 < 0.49 < 0.23 < 0.26 . .

~-5 - Filtered 28-Apr-09 M82477-6A . . . . . . < 3.2 < 1.8

MW-5 20-0ct-IO 1010518-09 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0· . . MW-5 - Filtered 20-0ct-lci 1010518-09 . . . . . . < 5.0 4.3

IMW-5 6-May-11 1105193-01 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 .

MW-5 - Filtered 6-May-11 1105193-01 . . . . . . < 5.0 3.0

IMW-5 25-Apr-12 1205050-03 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 . .

IMW-5 - Filtered 25-Apr-12 1205050-03 . . . . . . < 5.0 < 3.0

IMW-5 23-Apr-13 1304405-10 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 . . MW-5 - Filtered 23-Apr-13 1304405-10 . . . . . . < 5.0

- < 3.0 ,

R.cponTabla_Ocloba 201J_nn Page 6 of22 See Noles on Page 22

TABLEJ

SUMMARY OF GROUNDWATER SAMPLING RESULTS SPRINGFIELD TOWNSIDP SUPERFUND SITE

Well Number Sample Date Samplel.D.

Number TOLUENE TCE 1,1-DCE 1,1,1-TCA 1,1-DCA CHLO RO­BENZENE

AS J LEAD 3

RAS (ug/L) 1,000 5 7 200 sso 100 20 50 ' MW-SR 11-Jul-94 A4355609 < I < I < I < 1 < I < 1 < 3 60

MW-SR 4-0ct-94 940SSS-OS < 0.5 u < 0:5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u 37.1

MW-SR 12-Jan-95 950012-13 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0:5 u < 2 u 86.8

MW-SR 14-Apr-95 950210-06 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u 44.4

MW-SR 12-Jul-95 9504S2-06 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u 33.5

MW-SR 9-Jan-96 960004-10 < 0.5 u < 0.5 u < 0.5 u 5 < 0.5 u < 0.5 u < 2 u < 1 u MW-SR IO-Jul-96 960530-16 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u 5.1 B 14.3

MW-SR 16-Jan-97 wW264S211 < 0.05 < 0.05 < 0.05 < 0.04 < 0.04 < 0.05 < 1.7 34.5

MW-SR 11,Jul-97 WW2743079 < 0.5 < 0.5. < 0.5 < 0.5 < 0.5 < 0.5 < 2 36.1

MW-SR 15-Jan-9S WW2S59275 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 2 50.4

MW-SR 1 l-Sep-9S S5515-S < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 2 78

MW-SR IS-Mar-99 E21S84S < 10 < 1 < I < 10 < 10 < 10 < 5 IS

MW-SR 6-0ct-99 E234154 < 10 < I <. 1 < 10 < 10 < 10 < 5 12

MW-SRDUP 6-0ct-99 E234155 < 10 < 1 < 1 < 10 < 10 < 10 < 5 21

MW-SR 13-Mar-OO E245030 < 10 < 1 < 1 < 10 < 10 < 10 < 5 14

MW-SR 9-Nov-00 27-Aug-27 < 10 < I < I < 10 < 10 < 10 < 5 17

MW-SR 22-May-01 10-Nov-65 < 10 < I < I < 10 < 10 < 10 < 5 46

MW-SR 19-Nov-01 2S-Jul-03 < 10 < I < 1 < 10 < 10 < 10 < 5 4.2

MW-SR 2S-May-02 10-Sep-39 < . 10 < 1 < 1 < 10 < 10 < 10 < 5 < 3

MW-SRDUP 2S-May-02 20-Sep-39 < 10 < 1 < I < 10 < 10 < 10 < 5 < 3

MW-SR 7-Nov-02 16-Jul-75 < 10 < I < 1 < 10 < 10 < 10 < 5 < 3

MW-SR 15-May-03 2-Aug-OS < 10 < 1 < 1 < 10 < 10 < 10 < 5 s MW-SR 4-Nov-03 7-Mar-55 < 10 < 1 < 1 < 10 < 10 < 10 < 5 < 3

MW-SR 21-May-04 30-Aug-90 < 10 < 1 < I < 10 < 10 < 10 < 5 3.9

MW-SR 14-Dec-04 S-Jan-3S < 10 < 1 < I < 10 < 10 < 10 < 5 3.3

MW-SR l_-Sep-05 17-Sep-Sl < 10 < I < I < 10 < 10 < 10 ·< 5 < 3

MW-SR 12-Apr-06 0604216-03 <· I < I < I < 1 < 1 -< I < 5 '4.6

MW-SRDUP 12-Apr-06 0604216-05 < 1 < I < I < I < I < 1 <, 5 5 MW-SR 9-0ct-06 0610230-15 < I < I < I < 1 < I < I - -MW-SR 24-Apr-07 0704477-11 < I < I < I < I < 1 < I < 5 < 3

MW-SR 6-Nov-07 0711197-10 < I < I < I < I < I < I < 5 11

MW-SR 24-Apr-OS OS04542-12 < I < I < I < I < I < I < 5 < 3

MW-SR 13-Nov-OS OSI 1333-12 I.I < 1 < I < I < I < I < 5 5

MW-SR 23-Apr-09 MS2335-9 < 0.31 < 0.3S < 0.52 < 0.49 < 0.23 < 0.26 < 3.2 5.9

MW-SR 20-0ct-IO 101051S-OS < 1.0' < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 4.S

MW-SR 4-May-11 1105132-09 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 4.3

MW-SR 4-0ct-11 1110152-03' < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < S.O 4.9

MW-SR 23-Apr-12 12044SS-06 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < s:o 6.4

MW-SR IO-Oct-12 1210230-08. < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 3.S

IMW-SR 23-Apr-13 1304405-07 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < S.O S.3

MW-SR 9-0ct-13 1310241-06 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 9.6

Rqimt.TaYc._Octaiba l01~_T3Tl Page 7 of22 See Notes on Page 22

TABLE3

SUMMARY OF GROUNDWATER SAMPLING RESULTS SPRINGFIELD TOWNSHIP SUPERFUND SITE

WeU Number Sample Date ·sample LD.

Number TOLUENE TCE 1,1-DCE 1,1,1-TCA 1,1-DCA CHLO RO­BENZENE

AS l LEAD 3

RAS (ug/L) 1.000 5 7 200 880 100 20 50

MW-9AR I l-Jul-94 A4355603 < I < I < I < I < I < I < 3 < 2

MW-9AR 4-0ct-94 940888-09 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u 1.3 B

IMW-9AR 12-Jan-95 950012-11 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < I u < 2 u MW-9AR 14-Apr-95 950210-01 < 0.5 u < 0.5 u < 0.5 u < 0.5 .u < 0.5 u < 0.5 u < 2 u < 2 u IMW-9AR "12-Jul-95 950482-11 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u < 2 u MW-9AR 10-Jan-96 960014-11 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < -0.5 u < 0.5 u < 2 u < 1 u MW-9AR 10-Jul-96 960530-17 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u 3 B < 2 u MW-9AR 16-Jan-97 WW2648207 < 0.05 < 0.05 < 0.05 < 0.04 < 0.04 < 0.05 < 1.7 I J MW-9AR 11-Jul-97 WW2743043 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 2 < 2

MW-9AR 14-Jan-98 WW2859276 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 2 < 2

IMW-9AR I 1-Sep-98 85515-9 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 3.1 < 2

MW-9AR 16-Mar-99 E218834 < 10 "< I < I < 10 < 10 < 10 < 5 < 3 J

IMW-9ARDUP 16-Mar-99 E218835 < 10 < 1 < 1 < 10 < 10 < 10 < 5 < 3

MW-9AR 5-0ct-99 E234149 < 1.0 < 1 < I < 10 <· 10 < 10 < 5 < 3

MW'9AR 13-Mar-OO E245028 < 10 < I < I < 10 < 10 < 10 < 5 < 3

MW-9ARDUP 13-Mar-00 E245029 < 10 < I < I < 10 < 10 < 10 < 5 < 3

MW-9AR 9-Nov-00 9-SeP:27 < 10 < I < 1 < 10 < 10 < 10 < 5 < 3

MW-9AR 14-Nov-OI 16-Jul-03 < 10 < I < I < 10 < 10 < 10 < 5 < 3

MW-9AR 6-Nov-02 17-Jill-75 < 10 < 1 < 1 < 10 < 10 < 10 < 5 < 3

MW-9AR 14-May-03 31-Jul~08 < 10 < I < 1 < 10 < 10 < 10 < 5 < 3

MW-9AR I9-May-04 3I-Aug-90 < IO < I < I < IO < JO < IO < 5 5.5

MW-9AR 2-Sep-05 5-Nov-81 < 10 < I < I < 10 < 10 < 10 < 5 < 3

MW-9AR 6-Apr-06 0604127-01 < I < I < I < I < I < I < 5 < 3

MW-9AR 26-Apr-07 0705020-06 < I < I < I < I < I < I < 5 II MW-9AR 22-Apr-08 0804511-03 .< I < I < I < I < I < 1 < 5 < 3

MW-9AR 28-Apr-09 M82477-9 < 0.31 < 0.38 < 0.52 < 0.49 < 0.23 < 0.26 -MW-9AR - Filtered 28-Apr-09 M82477-9A - - - - - - < 3.2 < 1.8

MW-9AR 20-0ct-IO 10105I8-24 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 - -MW-9AR - Filtered 20-0ct-10 10105I8-24 - - - - - - < 5.0 < 3.0

MW-9AR 5-May-l I 1 I05132-22 < 1.0 < LO < LO < 1.0 < 1.0 < 1.0 - -MW-9AR - Filtered 5-May-11 110532-22 - - - - - - < 5.0 < 3.0

MW-9AR 26-Apr-12 1205050-06 < 1.0 < 1.0 < 1.0 < 1.0 '· < 1.0 < LO - -MW-9AR - Filtered 26-Apr-12 1205050-06 - - - - - - < 5.0 < 3.0

MW'9AR . 23-Apr-13 1304405-05 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 - -MW-9AR-Filtered 23-Apr-13 1304405-05 ·­ - - - - - < 5.0 < 3.0

MW-9AR 7-0ct-13 1310241-07 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 - -

MW-I OAR 7-0ct-13 1310241-08 < 1.0 < 1.0 < 1.0 < 1.0 ­ < 1.0 < 1.0 - -

Page 8 of22 See Notes on Page 22

TABLE3

SUMMARY OF GROUNDWATER SAMPLING RES UL TS SPRINGFIELD TOwNSHIP SUPERFUND SITE

Well Number Sample Date Samplel.D.

Number TOLUENE TCE 1,1-DCE 1,1,1-TCA 1,1-DCA CHLORO­

BENZENE AS J LEAD 3

[RAS (ug/L) 1,000. 5 7 200 880 100 20 50

MW-II 6-Jul-94 A4347217 0.04 J < I . J I J 110· J 0.7 J < I J < 3 J 23 J

MW-II 4-0ct-94 940888-10 < 0.5 u < 0.5 u I 120 I < 0.5 u < 2 u 59.3

MW-II DUP 4-0ct-94 940888-12 < 0,5 u < 0.5 u 2 130 2 < 0.5 u < 2 u 64.8

MW-II 12-Jan-95 950012-06 < 0.5 u <' 0.5 u 2 160 2 < 0.5 u < 2 u 21.2

MW-II 15-Apr-95 950210-19 < 0.5 u < 0.5 u I 120 < 0.5 u < 0.5 u < 2 u 52.3

MW-11 ll-Jul-95 950474-06 < 0.5 u < . 0.5 u I 110 ' 2 < 0.5 u < 2 u 18.9

MW-II 9-Jan-96 ' 960004-11 . < 0.5 u <· 0.5 u I 98 I < 0.5 u < 2 u 21.8

MW-II 9-Jul-96 960530-06 < 0.5 u < 0.5 u I 160 < 0.5 u < 0.5 u 4.8 B 5.4

MW-II 15-Jan-97 WW2648164 < 0.05 < 0.05 1.3 120 ~0.7 < 0.05 < 1.7 27

MW-II ll-Jul-97 WW2743044 < 0.5 < 0.5 1.7 110 0.91 < 0.5 < 2 41.4

MW-II 13-Jan-98 WW2859277 < 0.5 < 0.5 < 0.5 110 0.57 < 0.5 < 2 24.5

MW-11 ll-Sep-98 85515-10 < 0.5 < 0.5 < 0.5 37 <· 0.5 < 0.5 2.2 44

MW-II 17-Mar-99 E218837 < 20 < 2 < 2 110 < 20 < 20 < 5 < 3

IMW-11 6-0ct-99 E234153 < 10 < I < I 120 < ·10 < 10 < 5 < 3

IMW-11 14-Mar-00 E245039 < 20 < 2 < 2 110 < 20 < 20 < 5 7

MW-II DUP 14-Mar-OO E245040 < 20 < 2 < 2 100 < 20 < 20 < 5 5.5

MW-11 '10-Nov-00 2-Sep-27 < 10 < I I.I 120 < 20 <· 10 < 5 7

MW-II 22-May-01 14-Nov-65 < 10 < I < I 72 < 10 < . 10 < 5 20

MW-II 13-Nov-OI I l-Aug-02 .< 10 < I < I 94 < 10 < 10 < 5 < 3

MW-II 5-Nov-02 I 8,Jul-75 < 50 < 5 < 50 55 < 50 < 50 < 5 < 3

MW-II 13-May-03 27-Jul-08 < 50 < 5 < 5 59 < 50 < 50 < 5 8.6

IMW-11 18-May-04 1-Sep-90 < 10 < 5 < 5 72 < 10 < 10 < 5 4.1

MW-II 30-Aug-05 I 5-Sep-81 < 10 < 5 < 5 42 < 10 < 10 < 5 20

IMW-11 11-Apr-06 0604183-03 < 2 < 2 < 2 79 < 2 < 2 < 5 < 3

MW-II 9-0ct-06 0610230-14 < I < I < I 38 2.4 < I - -MW-II 25-Apr-07 0705020-01 < I < I < I 8.6 11 < I < 5 3.1

MW-11 5-Nov-07 0711197-05 < I < I 2.1 77 < I < I < 5 7.3

MW-II 23-Apr-08 0804511-08 < I < I < I 75 2.3 < I < 5 < 3

MW-II 13-Nov-08 0811333-15 <­ I - < I < I ·so I.I < I < 5 < 3

MW-11 27-Apr-09 M82477-3 < 0.31 < 0.38 0.79 62.8 1.9 < 0.26 < 3.2 11.8

MW-II 19-0ct-IO 1010518-18 < I < I I 52 1.4 < I < 5 < 3.0

MW-II DUP 19-0ct-10 1010518-21 - - - - - - < 5.0 5.0

MW-II 3-May-11 1105132-12 < I < I <" I 58 2.1 < I < 5.0 16

MW-II Filtered 3-May,l I 1105132-12 - - - - - - < 5.0 < 3.0

MW-11 6-0ct-11 1110152-18 < 1.0 < 1.0 < 1.0 63 2.6 < 1.0 < 5:0 < 3.0

IMW-11 27-Apr-l.2 1205050-08 < 1.0 < 1.0 < 1.0 69 1.7 < 1.0 < 5.0 21

MW-11 20-0ct-12 1304463-11 < 1.0 < 1.0 < 1.0 72 < 1.0 < 1.0 < 5.0 < 3.0

MW'll 25-Apr-13 1304463-11 < 1.0 < 1.0 < 1.0 60 1.3 < 1.0 .< 5.0 3.1

MW-11 8-0ct-13 1310241-09 < 1.0 < 1.0 < 1.0 67 I.I < 1.0 < 5.0 14

'

MW-13 6-0ct-94 940888-25 < 0.5 u < 0.5 u < 0.5 u < 0.5 u <. 0.5 u < 0.5 u < 2 u 21.7

IMW-13 11-Jan-95 950012-16 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < OS u < 0.5 u < 2 u 34.1

IMW-13 14-Apr-95 950210-11 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u I 1.6

IMW-13 11-Jul-95 950474-05 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u 15.4

MW-13 9-Jan-96 960004-03 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u 20.1

IMW-13 9-Jul-96 960530-09 < 0.5 u <" 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u 20.4

MW-13 15-Jan-97 WW2648165 < 0.05 < 0.05 < 0.05 < 0.04 < 0.04 < 0.05 < 1.7 18.2

MW-13 13-Jan-98 WW2859278 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 2 18.9

MW-13 11-Sep-98 85515-1 I < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 2.7 39

IMW-13 18-Mar-99 E218853 < 10 < I < I < 10 < 10· < 10 < 5 17

IMW-13 5-0ct-99 E234132 < 10 < I < I < JO < 10 < 10 < 5 3.8

IMW-13 13-Mar-OO E245032 < 10 < I < I < 10 <" 10 < 10 < 5 < 3

MW-13 9-Nov-00 3-Sep-27 < 10 < I < I < 10 < 10 < 10 < 5 4.4

H:\S111al~,...._,·_.~'f'Yl~O:im:.IGZAI

IU:partTlbla_<::>c:soea201:i._TJTJ Page 9 of22 See Notes on Page 22

TABLEJ

SUMMARY OF GROUNDWATER SAMPLING RESULTS. SPRINGFIELD TOWNSHIP SUPERFUND SITE

Well Number Sample Date Sample LO.

Number TOLUENE TCE 1,1-DCE 1,1,1-TCA 1,1-DCA CHLORO­BENZENE AS J LEAD 3

RAS (ug/L) 1,000 5 7 200 880 JOO 20 5Q

MW-102M 4-0ct-94 940888-13 < o·.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u "< 2 u < I u MW-102M 12-Jan-95 950020-05 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u 6.7 MW-102M 16-Apr-95 950210-31 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u 4.9 MW-102M 13-Jul-95 950488-06 < 0.5 UJ < 0.5 UJ < 0.5 UJ < 0.5 UJ < 0.5 UJ < 0.5 UJ < 2 u < 2 u MW-102M I J-Jan-96 960014-01 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u 1.9 B IMW-102M JO-Jul-96 960535-09 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u 4.9 B 67.8

IMW-102M 24-Jan-97 WW2651853 < 0.05 < 0.05 < 0.05 < 0.04 < 0.04 < 0.05 2 J 3.9 MW-102M I5-Jan-98 WW2859279 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 2 < 2 MW-I02M I I-Sep-98 855I5-12 < 0.5. < 0.5. < 0.5 < 0.5 < 0.5 < 0.5 5.2 3.9 MW-I02M I8-Mar-99 E218850 < JO < I <· I < JO < 10 < JO < 5 < 3

MW-102M 5-0ct-99 E234137 < IO < I < I < IO < IO < JO < 5 < 3

MW-102MDUP 5-0ct-99 E234I38 < JO < I < I < IO < JO < JO < 5 < 3

MW-102M 31-May-OJ 30-0ct-66 < . JO < I < I < 10 < 10 < JO < 5 I55'

MW-102M 16-Nov-OJ I 5-Jul-03 < 10 < I < I < JO < 10 < JO < 5 < 3 MW-102M · 29-May-02 14-Sep-39 < JO < I < I < JO < 10 < 10 < 5 < 3 MW-102M 7-Nov-02 I 9-Jul-75 < JO < I < I < JO < 10 < JO < 5 < 3 MW-102MDUP 7-Nov-02 27-Jul-75 < JO < I < 1 < 10 < 10 < 10 < 5 < 3 MW-102M 15-May-03 3-Aug-08 < JO < I < 1 < 10 < 10 < JO < 5 < 3. MW-102M 4-Nov-03 1-Mar-55 < JO < 1 < 1 < JO < 10 < JO < 5 < 3 MW-l02M 20-May-04 2-Sep-90 < 10 < l < 1 < 10 < IO < 10 < 5 ll MW-102MDUP 20-May-04 14-Sep-90 < IO < I < I < 10 < JO < JO < s 9.4 MW-l02M 9-Dec-04 27-Jun-36 < 10 < 1 < I < JO < JO < JO < 5 4.3

MW-102MDUP 9-Dec-04 28-Jun-36 < JO < I < I < JO < 10 < JO < 5 II MW-102M I-Sep-OS 18-Sep-81 < 10 < 1 < I < JO < JO < JO < 5 3.7

MW-102MDUP I-Sep-OS 19-Sep-81 < JO < I < I < JO. < JO < JO < 5 3.6

MW-102M 13-Apr-06 0604274-01 LI < I < I < I < I < 1 < 5 22

MW-102M 4-0ct-06 0610230-07 2.1 < I < 1 < 1 < 1 < 1 - -MW-102M 24-Apr-07 0704477-08 < 1 < I < 1 < 1 < I < ]" < 5 3.2

MW-l02M 6-Nov-07 0711197-09 < I < I < 1 < I < 1 < 1 < 5 3.3

MW-102M 24-Apr-08 0804542-01 < 1 < 1 < 1 < I < 1 < I < . 5 < 3

MW-102M 12-Nov-08 0811333-10 < I < I < I < I < I < I < 5 < 3

MW-102M 23-Apr-09 M82335-7 < 0.31 < 0.38 < 0.52 < 0.49 < 0.23 < 0.26 3.5 4.6

MW-102M 18-0ct-JO 1010518-16 < 1.0 < 1.0 < LO < LO < LO < 1.0 < 5.0 < 3.0

MW-102M 4-May-I I I 105132-08 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < S.0 4.7

MW-102M 5-0ct-I 1 1110152-12 < 1.0 < 1.0 < 1.0 < 1.0· < 1.0 < 1.0 < 5.0 3.9

MW-102M 26-Apr-12 1205050-11 < 1.0 < LO < LO < LO < LO < LO < 5.0 9.5 MW-102M JO-Oct-12 1210230-05 < LO < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 3.0

MW-102M 25-Apr-13 1304463-08 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 3.0

MW-lOiM 8-0ct-13 1310241-10 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < "3.0

MW-103 11-Jul-94 A4355607 l J < 1 < 1 < I < I < I < 3 8

MW-103 6-0ct-94 940888-26 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u 4.8

IMW-103 11-Jan-95 950012-09 < o.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u < 5.1 u MW-103 14-Apr-95 950210-04 < 0.5 u < ci.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u < 2 u MW-103 I J,Jul-95 950474-02 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u < 2 .u MW-103 JO-Jan-96 960014-06 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u < I u IMW-103 10-Jul-96 960530-20 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u < 2 u MW-103 15-Jan-97 WW2648169 0.25 J < 0.05 < 0.05 < 0.04 < 0.04 < 0.05 < 1.7 1.71 J

IMW-103 DUP 15-Jan-97 WW2648171 < 0.05 < 0.05 < 0.05 < 0.04 < 0.04 < 0.05 < 1.7 2.77 J

IMW-103 11-Jul-97 WW2743047 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 2 < 2

MW-103 14-Jan-98 WW2859280 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 2 3.75

MW-103 DUP 14-Jan-98 WW2859302 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 2 3.55

MW-103 I J-Sep-98 85515-13 < 0.5 < 0.5 < 05 < 0.5 < 0.5. < 0.5 3.2 4

IMW-103 DUP I 1-Sep-98 85515-29 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 3.2 3.55

MW-103 16-Mar-99 E218830 < JO < I < I < JO < 10 < JO < 5 < 3

MW-103 4-0ct-99 E234145 < JO < I < 1 < JO < 10 < 10 < 5 < 3

H:\Sdal~n-.:-\"arRco.Wwr.\fYIAICmrmi:GZAI

1U:pcwtTobla_~20n_nn Page JO of22 See Notes on Page 22

TABLE3

SUMMARY OF GROUNDWATER SAMPLING RESULTS SPRINGFIELD"TOWNSHIP SUPERFUND SITE.

Well Number Sample Date Sample LO.

Number TOLUENE TCE 1,1-DCE 1,1,1-TCA 1,1-DCA CHLORO­BENZENE

AS l LEAD 3

RAS (ug/L) 1,000 5 7 200 880 100 20 50

MW-104 6-Jul-94 A4347213 < 1 0.2 J < I < 1 < 1 < 1 < 3 5

MW-104 6-0ct-94 940888-27 < 0.5 u < 0.5 u < 0.5 u < 0.5 .U < 0.5 u < 0.5 u < 2 u 2 B

MW-104 10-Jan-95 950012--08 0.7 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u < 2.6 UB MW-104 14-Apr-95 950210-05 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u < 2 u MW-104 1 l-Jul-95 950474-03 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u 3 < 2 u < 2 u MW-104 10-Jan-96 960014--05 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u· < 2 u 2.1 B

MW-104DUP 10-Jan-96 960014--08 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u < 1 u MW-104 9-Jul-96 960530-10 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u 7.4 B < 2 u MW-104DUP 9-Jul-96 960530-11 < 0.5 u < 0.5 u < 0.5 u < .0.5 u < 0.5 u < 0.5 u 4.2 B < 2 u MW-104 15-Jari-97 WW2648168 < 0.05 < 0.05 < 0.05 < 0.04. < 0.04 < 0.05 < 1.7 L49 J

MW-104 11-Jul-97 WW2743048 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 2 < 2

MW-104 14-Jan-98 WW2859281 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 2 < 2

MW-104 11-Sep-98 85515-14 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 3.8 < 2

MW-104 16-Mar-99 E218831 < 10 < 1 < 1 < 10 < 10 < JO < 5 < 3

MW-104 4-0ct-99 E234146 < 10 < 1 < 1 < 10 < 10 < 10 < 5 < 3

MW-104 13-Mar-OO E245034 < 10 < 1 < 1. < 10 < 10 < 10 < 5 < 3

MW-104 9-Nov-00 10-Sep-27 < 10 < 1 < 1 < 10 < 10 < 10 < 5 < 3

MW-104 14-Nov-01 17-Jul-03 < 10 < 1 < 1 < 10 < 10 < 10 < 5 < 3

MW-104 5-Nov--02 20-Jul-75 < 10 < 1 < I < 10 < IO < 10 < 5 < 3

MW-I04 I3-May--03 25-Jul-08 < IO < 1 < I < IO < 10 < 10 < 5 < 3

MW-104 I9-May--04 3-Sep-90 < 10 < I < 1 < 10 < 10 < 10 < 5 < 3

MW-104 30-Aug--05 14-Sep-81 < 10 < 1 < 1 < 10 < 10 < 10 < 5 < 3

MW-104 7-Apr--06 0604127--05 < 1 < 1 < 1 < 1 -;:: 1 < 1 < 5 < 3

MW-104 24-Apr-07 0704477-12 < 1 < 1 < 1 < 1 < 1 < 1 < 5 < 3

MW-104DUP 24-Apr-07 0704477--09 < 1 < 1 < 1 < 1 < 1 < 1 < 5 < 3

MW-104 22-Apr-08 0804511-05 < 1 < 1 < 1 < 1 < 1 < 1 < 5 < 3

MW-104 27-Apr-09 M82477-2 < 0.31 < 0.38 < 0.52 < 0.49 < 0.23 < 0.26 < 3.2 < L8

MW-104 19-0ct-IO 10I0518-17 < 1.0 < 1.0 < LO < . 1.0 - < 1.0 < LO < 5.0 < 3.0 MW-104 3-May-11 I 105I32-1 I < LO < 1.0 < 1.0 < 1.0 < 1.0 < LO < 5.0 < 3.0 MW-I04 27-Apr-I2 1205050-I5 < 1.0 < LO < 1.0 < 1.0 <. 1.0 < 1.0 < 5.0 < 3.0

MW-I04 25-Apr-13 1304463-09 < 1.0 < LO < 1.0 < LO < 1.0 < 1.0 < 5.0 < 3.0

0H:':inal\SpWffido&IF..,...'i_. ~'f"\ 14'Carn:al'GZAI

Page 11 of22 See Notes on Page 22

TABLEJ

SUMMARY OF GROUNDWATER SAMPLING RESULTS SPRINGFIELD TOWNSIIlP SUPERFUND SITE

Well Number Sample Date Samplel.D.

Number TOLUENE TCE 1,1-DCE 1,1,1-TCA 1,1-DCA CHLO RO­BENZENE AS J LEAD 3

RAS (ug/L) ·­ 1,000 5 7 200 880 100 20 50

MW-105 7-Jul-94 A4346904 < I 67 J 0.3 J 60 J 29 J < I < 3 < 2 J

MW-105 4-0ct-94 940888-14 < 0.5 u 97 < 0.5 u 61 26 < 0.5 u < 2 u < I u MW-105 I 1-Jan-95 950012-22 < 0.5 u 120 < 0.5 u 44 II < 0.5 u < 2 JU 6.7

MW-105 16-Apr-95 950210-30 < 0.5 u llO I 38 9 < 0.5 u < 2 u < 2 u MW-I05 l 3-Jul-95 950488--02 < 0.5 u 69 < 0.5 u 22 9 < 0.5 u < 2 u < 2 u MW-I05DUP I 3-Jul-95 950488--03 < 0.5 UJ 51" J < 0.5 UJ 18 J 7 J < 0.5 UJ < 2 u < 2 u MW-I05 l l-Jan-96 960004-20 < I u 200 <· I u 62 II < I u < 2 u < I u MW-105 IO-Jul-96 960535--07 < 0.5 u 430 J < 0.5 u 33 12 < 0.5 u "5.4 B < 2 u MW-105 16-Jan-97 WW2648213 < 0.05 56 < 0.05 6.1 1.8 < 0.05 < 1.7 I J

IMW-105 12-Jul-97 WW2743049 < 0.5 370 < 0.5 31 7.5 < 0.5 < 2 < 2

IMW-105 15-Jan-98 WW2859282 < 0.5 350 < 0.5 34 9.5 < 0.5 < 2 < 2

IMW-105 ll-Sep-98 85515~15 < 0.5 190 < 0.5 35 7.6 < 0.5 2.3 < 2

MW-I05 17-Mar-99 E218841 < 100 630 < IO < 100 < 100 < 100 < 5 < 3

MW-105 5-0ct-99 E234136 < IO llOO < 10 < IO < IO < IO < 5 < 3

MW-105 14-Mar-00 E245047 < 200 1200 < 20 < 200 < 200 < 200 < 5 < 3

MW-105 9-Nov-00 28-Aug-27 < 25 1600 < 25 77 < 25 < 25 < 5' < 3

MW-105DUP 9"Nov--OO 12-Sep-27 < 10 1500 < I 28 < 10 < 10 < 5 < 3

JMW-105 30-May--01 26-0ct-66 < 100 550 < IO < 100 < 100 < IOO < 5 < 3

MW-105DUP 30-May-01 27-0ct-66 < 100 490 < 10 < 100 < 100 <, IOO < 5 < 3

MW-105 16-Nov-01 14-Jul--03 < 50 400 < 5 < 50 < 50 < 50 < 5 < 3

MW-105 30-May-02 18-Sep-39 < 250 980 < 25 < ·250 < 250 < 250 < 5 < 3

MW-105 7-Nov-02 21-Jul-75 < 250 510 < 25 < 250 < 250 < 250 < 5 .< 3

MW-105 15-May-03 18-Mar--08 < 25 800 < 25 35 < IO < 25 < .5 < 3

MW-105 5-Nov-03 23-Feb-55 < 25 880 < 25 < 25 < 25 < 25 < 5 < 3

MW-105DUP 5-Nov-03 IO-Mar-55 < 25 890 < 25 < 25 < 25 < 25 < 5 < 3

MW-105 20-May-04 4-Sep-90 < 10 1200 < 50 < IO < 10 < IO < 5 < 3

MW-105 8-Dec-04 23-Nov-35 < 50 800 < 50 < 50 < 50 < 50 < 5 < 3

MW-105 l-Sep-05 20-Sep-8!" < 20 510 < 20 < 20 < 20 < 20 < 5 < 3

MW-105 12-Apr-06 0604214-01 < 20 810 < 20 < 20 < 20 < 20 < 5 < 3

MW-105 4-0ct-06 0610230-06 < 10 760 < IO < IO < IO < IO, - -MW-105 26-Apr-07 07050020-8 < IO 300 < IO < IO < 10 < IO < 5 6.6

IMW-105 5-Nov--07 0711197-07 < 5 160 < 5 < 5 < 5 < 5 < 5 < 3

MW-105 DUP 5-Nov-07 0711197-08 < 5 160 < 5 < 5 < 5 < 5 < 5 < 3

MW-105 22-Apr--08 0804511--01 < IO 460 < 10 < IO < IO < 10 < 5 4.7

IMW-105 11-Nov-08 0811333--05 <· IO 360 < IO < IO < IO < IO < 5 < 5

IMW-105 28-Apr-09 M82477-5 < 0.31 432 < 0.52 4.2 < 0.23 < 0.26

IMW-105 -Filtered 28-Apr-09 M82477-5A - - - - - - < 3.2 < 1.8

IMW-105 20-0ct-IO 1010518-23 < 2.0 78 < 2.0 < 2.0 < 2.0 < 2.0 - -MW-I05 -Filtered 20-0ct-IO I010518-23 - - - - - - < 5.0 < 3.0

MW-105 3-May-11 1 I05132-05 < 1.0 ·, 180 < 1.0 < 1.0 < '1.0 < 1.0 - -MW-I05 - Filtered 3-May-11 1105132--05 - - - - - - < 5.0 < 3.0

MW-105DUP 3-May-11 l I05132-06 < 1.0 180 < 1.0 < 1.0 < 1.0 < 1.0 - -MW-I05 DUP - Filtered 3-May-11 1105132--06 - - - - - - < 5.0. < 3.0

MW-105 4-0ct-11 1110152-09 < 5.0 100 < 5.0 < 5.0 < 5.0 < 5.0 - -IMW-105 - Filtered 4-0ct-11 ll IOI 52-09 - - - - - - < 5.0 < 3.0

IMW-105DUP 4-0ct-11 1110152-11 < 5.0 llO < 5.0 < 5.0 < 5.0 < 5.0 - -IMW-105 DUP- Filtered 4-0ct-11 1110152-11 - - - - - - -< 5.0 < 3.0

MW-105 23-Apr-12 1204488-04 < 5.0 200 < 5.0 < 5.0 < ·5.0 < 5.0 - -MW-105 - Filtered 23-Apr-12 1204488-04 - - - - - - < 5.0 < 3.0

IMW-105DUP 23-Apr-12 1204488-05 < 5.0 200 < 5.0 < 5.0 < 5.0 < 5.0 - -MW-105 DUP- Filtered 23-Apr-12 1204488-05 - - - - - - < 5.0 < 3.0

MW-105 9-0ct-12 12I02~0--03 < 5.0 130 < 5.0 < 5.0 < 5.0 < 5.0 - -MW-I05 - Filtered 9-0ct-12 12I0230-03 - - - - - - < 5.0 < 3.0

MW-105 DUP 9-0ct-12 1210230-02 < 5.0 130 < 5.0 < 5.0 < 5.0 < 5.0 - -MW-105 DUP- Filtered 9-0ct-12 1210230-02 - - - - - < 5.0 < 3.0

MW-105 22-Apr-13 1304405-01 < 2.0 210 < 2.0 < 2.0 < 2.0 < 2.0 - -MW-105 - Filtered 22-Apr-13 1304405-01 - - - - - - < 5.0 < 3.0

MW-105 DUP 22-Apr-13 1304405-03 <. 5.0 220 < 2.0 < 2.0 < 2.0 < 2.0 - -MW-105 DUP- Filtered 22-Apr-13 1304405;03 - - - - - < 5.0 <. 3.0

Page 12 of22 See Notes on Page 22

--

TABLE3

SUMMARY OF GROUNDWATER SAMPLING RES_ULTS SPRINGFIELD TOWNSHIP SUPERFUND SITE

Well Number -­ Sample Date Sample LO.

Number TOLUENE TCE J,I-DCE I,I,l-TCA 1,1-DCA CHLO RO­BENZENE

AS 3 LEAD 3

RAS (ug/L) 1,000. 5 7 200 880 JOO 20 50

MW-I05 8-0ct-13 1310241-1 I < 2.0 260 < 2.0 < 20 < - 2.0 < 2.0 - -Mw-105 - Filtered 8-0ct-13 131024I-JI - - - - - ~ < 5.0 < 3.0

MW-I06 24-Mav-02 5-Sep-39 < JO < 1 < 1 < IO < IO <­ JO < 5 < 3

MW-106 I5-Nov-02 21-Dec-n < IO <" I < I < JO < JO < IO < 5 < 3

MW-J06 14-Mav-03 7-0ct-07 < IO < I < I < IO < JO < fo < 5 < 3 \.fW-106 6-Nov-03­ 24-Feb-55 < JO < I < I < 10 < JO < JO < 5 < 3

\.fW-106 21-Mav-04 5-Seo-90 < JO < I < I < JO < IO < 'IO < 5 < 3

\.fW-106 8-Dec-04 24-Nov-35 < 10 < I-­ < I < IO < 10 < IO .< 5 < 3 '1W-I06 2-Sep-OS 6-Nov-81 < JO < I < I < IO < IO < IO < 5 < 3

MW-I06

MW-I06

I2-Jan-06

I J-Apr-06 -

0604216-01 < -I <

-I <

-1 <

-I <·, -

I < -I

<

<"

5

5 <

6.1

3 MW-I06 26-Anr-07 - 0705020-05 < I <-. 1 < 1 < 1 < 1. < I < 5 31

MW-I08 6-Jul-94 A43472I2 < 1 < I < I < 1 "< 1 < 1 < 3 6

MW.-I08 6,0ct-94 940888~28 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0:5 u < 0.5 u < 2 u < 1 ·u MWcJ08 11-Jan-95 950012-I5 < ·o.s u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u < I u MW-108 I4-Anr-95 9502IO~l2 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0_5 u < 2 u < 2 u MW-J08 I 1-Jul-95 950474-04 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 li < 2 u MW-I OS 9-Jan-96 960004-09 < 0.5 u < 0.5 u < '0.5 u < 0.5 u < 0.5 u < 05 u < 2 u < I u MW-J08DUP 9-Jan-96 960004-13 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u <­ 1 u MW-108 9-Jul-96 960530-07 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u <I 2 u MW-I08 I5-Jan-97 wW26481666 < 0.05 < 0.05 < 0.05 < 0.04 < 0.04 < 0.05 < 1.7 1.13 J Mvi-I08 11-Jul-97 WW2743050 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0:5 .<­ 2 < 2 MW-108 I3-Jan-98 WW2859283 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 4.3 < 2 MW-I08 ll~Sep-98 855I5-I6 < 0.5 < 0.5 < 0.5 <· 0.5 < 0.5 < 0.5 2.1 < 2 MW-I08 I8-Mar-99 E21S858 < 10 < I < I < IO < 10 < IO < 5 < 3

MW-J08 5-0ct-99 E234I34 < 10 < 1 < l < - 10 <-. JO < 10 < 5 < 3 MW-108 14-Mar-OO E245035 < JO < 1 < I < 10 < 10 <" IO < 5 < 3 MW-108 9-Nov-00 4-Seo-27 < JO < 1 < 1 < 10 < 10 < JO < 5 < 3 MW-I08 22-Mav-01 13-Nov~5 < IO < 1 < 1 < IO < JO < JO < 5 < 3

MW-201 8-Jul-94 A4349204 < I < I < I NA < 0.5 < 0.5 < 3 8 J MW-20I 4-0ct-94 940888-I4 < 0.5 u < 0.5 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u ·2.4 B MW-201 11-Jan-95 950012-17 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u <· LI UB MW-201 15-Aor-95 950210-20 < 0.5 u < 0.5 u <­ 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u < 2 u IMW-201 12-Jul-95 950482-05 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u < 2 u MW-201 9-Jan-96 960004-04 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0_5 u < 0.5 u < 2 u < 1 u

· IMW-20I 9-Jul-96 960530-02 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 ·U < 0.5 u 3:3 B < 2 u MW-20I I5-Jan-97 WW2648I62 < 0.05 < 0.05 < 0.05 < 0.04 < 0.04 < 0:05 < 1.7 l.8I J MW-20I ll-Jul-97 WW274305I <. 0.5 < 0.5 < 0.5 < 0.5 < 0_5 < .0.5 : < 2 < 2 MW-20I 13-Jan-98· WW2859284 < 0.5 < 0.5 < 0.5 <·0.5 < 0.5 < 0.5 < 2 < 2 MW'20I I 1-Sen-98 85515-I7 < 0.5. < ·0.5 < 0.5 < 0.5 < 0.5 -< 0.5 < 2 14 MW-201 I7-Mar-99 E2·18838 < . 10 < 1 < I < 10 < 10 < IO < 5 < 3 MW'201 5~0ct-99 E234142 < JO < 1 < I < JO < 10 < 10 < 5 < 3 MW-201 14-Mar-OO £245041 < IO < 1 < 1 < JO < 10 < JO < 5 < 3 MW-201 JO~Nov"OO 5-Seo-27 < JO < 1 < 1 < 10 < JO < 10 < 5 < 3

H·'SitQl~ld\f'iw·Yc:ar~\FYJ-4~>GZA\

Repot1T1bla_ciaoMrlOB_T3T3 Page.13 of22 See Notes on P~e 22

TABLE3

SUMMARY OF GROUNDWATER SAMPLING RESULTS SPRINGFIELD TOWNSHIP SUPERFUND SITE

Well Number Sample Date Sample l.D.

Number TOLUENE TCE 1,1-DCE J,J,1-TCA J,J-DCA CHLO RO­BENZENE

AS 3 LEAD 3

RAS (ug/L) J,000 5 7 200. 880 100 20 50

MW-202 I 1-Jul-94 A4355607 < I < I < I < I < I < J < 3 4 MW-202 6-0ct-94 940888-29 < 0.5 u < 0.5. u < 0.5 u < 0.5 u < 0.5 u < 0.5 u 3.6 J < J u MW-202 IO-Jan~95 950012-05 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u 89.7 MW-202 15-Apr-95 950210-J7 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u .< 0.5 u < 2 u 7.7

MW-202 J 2-Jul-95 950482-04 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u 2.5 B 2.3 B MW-202 IO-Jan-96 9600J4-09 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u 5.9 MW-202 IO-Jul-96 960530-13 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < .0.5 u 3.1 B < 2 u MW,202 J5-Jan-97 WW2648170 < 0.05 < 0.05 < 0.05 < 0.04 < 0.04 . < 0.05 < 1.7 2.87 J MW-202 I J-Jul-97 WW2743052 < 0.5 < 0.5 < 0.5 < .0.5 < 0.5 < 0.5 < 2 6 MW-202 14-Jan-98 WW2859285 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < . 0.5 < 2 2.73 MW-202 I l-Sep-98 85515-18 < 0.5 < 0.5 < 0.5 "< 0.5 < 0.5 < 0.5 3.6 12 MW-202 18-Mar-99 E2J8857 < IO < 1 < J < JO < IO < IO < 5 < 3 MW-202 5-0ct-99 E234J4J < JO < J < J < IO < JO < 10 < 5 < 3

MW-202 14-Mar-OO E245036 < 10 < J < J < JO < 10 < 10 < 5 < 3

IMW-202 9-Nov-00 6-Sep-27 < JO < 1 < 1 < 10 < 10 < 10 < 5 13

MW-203 l 1-Jul-94 A4355602 1 J < 1 < 1 < 1 < J < . I < 3 14.1 J MW-203 5-0ct-94 940888-16 < 0.5 u < 0.5 ·u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u < 1 u MW-203DUP 5-0ct-94 940888-11 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u 1.4 B MW-203 10-Jan-95 950012-04 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u 48 MW-203 15-Apr-95 950210-18. < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u <· 2 u 46 MW-203 12-Jul-95 950482-02 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u 31.7

MW-203 JO-Jan-96 960014-13 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u 4.3

MW-203 10-Jul-96 960530-12 < 0.5 u < 0.5 u < 0.5 u < 0.5 u "< 0.5 u < 0.5 u 3.7 B < 2 u MW-203 16-Jan-97 WW2648205 < 0.05 < 0.05 < 0.05 < 0.04 < 0.04 < 0.05 < 1.7 7.1 MW-203 11-Jul-97 WW2743080 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 2 4.9

MW-203 , 14-Jan-98 WW2859286 < 0.5 < 0.5. < 0.5 < 0.5 < 0.5 < 0.5 < 2­ 3.56

MW-203 11-Sep-98 85515-19 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 2.4 4.8

MW-203 18'Mar-99 E218854' < 10 < 1 < I < 10 < 10 < 10 < 5 5.6

MW-203 5-0ct-99 E234140 < 10 < I < 1 < 10 < JO < 10 < 5 4.4

MW-203 14-Mar-OO E245037 < 10 < J < 1 < 10 < 10 < 10 < 5 6.7

MW-203 10-Nov-OO l J'Sev-27 < 10 4.9 < 1 < 10 < IO < 10 < 5 < 3

MW-203DUP JO-Nov-00 13-Sep-27 < 10 <· 1 < 1 < 10 < 10 < 10 < 5 < 3

MW-203 13-Nov-01 9-Aug-02 < IO < I .< 1 < 10 < IO < JO < 5 < 3

MW-203 5-Nov-02 22-Jul-75 < 10 < 1 < I < IO < IO < IO < 5 < 3

MW-203 13-Mav-03 28-Jul-08 < JO < 1 < 1 < 10 < JO < IO < 5 < 3

MW-203 I8-Mav-04 6-Sep-90 < JO < 1 < I < IO <­ IO < 10 < 5 < 3

MW-203 7-Sev-05 13-Nov-81 < JO < I < J < 10 < 10 < IO < 5 < 3

MW-203 ll-Aor-06 0604183-04 < I < I < I < I < I < I < 5 4.6

MW-203DUP I 1-Aor-06 0604I83-05. < I < I < 1 < J. < J < i < 5 9 MW-203 23-Aor-07 070477-02 < I < 1 < I < 1 < 1 < J < 5 6.2

MW-203 25-Apr-08 0804542-08 < I < J < 1 < J < 1 < I < 5 4.4

MW-203DUP 25-Apr-08 0804542-09 < 1 < 1 < 1 < J < J < J < 5 6.7

MW-203 29-Apr-09 M82477-J l < 0.3J < 0.38 < 0.52 < 0.49 < 0.23 < 0.26 < 3.2 J7.3

IMW-203 19-0ct-IO JOI05I8-05 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 5.I

MW-203 4-Mav-JI l J05132-J8 <. 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.o <: 3.0

MW-203 27-Apr-J2 1205050-J6 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 3.0

MW-203 25-Anr-13 I304463-JO < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 3.3

R.qqtlablca Octolc 20B T3T3 Page 14 of22 See Notes on Page 22

TABLE3

SUMMARYOF GROUNDWATER SAMPLING RESULTS , SPRINGFIELD TOWNSHIP SUPERFUND SITE

Well·Number Sample Date Sample I:D."

Number· TOLUENE TCE 1,1-DCE l,l,1-TCA 1,1-DCA CHLO RO­BENZENE

AS J LEAD 3 1

RAS (ug/L) 1,000 5 - 7 200 880 100 20 50

MW-204 lHul-94 A4355601 < 1 < I < I < I < I < I < 3 13

.MW-204 6-0ct-94 940888-30 0.3 J < 0.5 u < 0.5 u < 0.5 u < 0.5 u 0.4 J 2.8 J < I u MW-204 1 l-Jan-95 950012,14 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u < 9.2 u MW-204 14-Anr-95 950210-10 < 0.5 u < 0.5 u < 05 u < 0.5 u < 0.5 u < 0.5 u < 2 u < i u MW-204 12-Jul-95 950482-04 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u < 2 u MW-204 IO-Jan-96 960014-07 < 0.5 u < 0.5 u· < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u < 1 u MW-204 9-Jul-96 960530-08 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0:5 u < 0.5 u < 2 u < 2 u MW-204 15-Jan-97 WW2648167 < 0.05 < 0.05 < 0.05 < 0.04 < 0:04 < 0.05 < 1.7 1.37 J

MW-204 I l-Jul-97 'ww2743081 < 0.5 < 0.5. < 0.5 < 0.5 < 0.5 < 0.5 < 2 < 2

MW-204 13-Jan-98 WW2859287 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 2 < 2

MW-204 11-Seo-98 85515~20 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 2.8 < 2

>fW-204 18-Mar-99" E218852 < 10 .< 1 < I < 10 < 10 < 10 < 5 < 3

>fW-204 5-0ct-99 E234133 <" 10 < 1 ·< I < 10 < 10 < 10 < 5 < 3

'1W-204 13-Mar-OO E245033 < 10 < 1 < 1 < 10 < 10 < 10 < 5 < 3

>fW.-204 9-Nov-00. 7-Seo-27 < 10 < 1 < I < 10 < 10 < 10 < 5 < 3

MW-205 1 l-Jul-94 A4355605 < I < I < I < I < I < 1 < 3 3

MW-205 6-0ct-94 940888-31· 0.3 J 0.3 J < 0.5 u < 0.5 u < 0.5 u 0.4 J < ·2 u 1.4 B

MW-205 11-Jan-95 950012-19 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 < 2 u 14.7

MW-205 15-Aor-95 950210:16 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 U· < 0.5 u < 2 u < 2 u MW-205 I 1-Jul-95 950474-07 "< os u < 0.5 u < 0.5 u < 0.5 u < 0,5 u < 0.5 u < 2 u < 2 u MW-205 IO-Jan-96 960014-12 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u < 2 u MW-205 . 10-Jul-96 960530-15 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 ·U 4.3

MW-205DUP 10-Jul-96 960530-14 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u 5.8 B < 2 u MW-205 i6-Jan-97 WW2648206 < 0.05 < 0.05 < 0.05 < 0.04 < 0.04 < 0.05 <" 1.7 2.23 J

MW-205 l l-Jul-97 Ww2743082 < ·o.5 < 0.5. < 0.5 < 0.5 < 0.5 < 0.5 < 2 < 2

MW-205 13-Jan-98 WW2859293 < 0.5 < 0.5 <: 0.5 < 0.5 < 0.5 < 0.5 ' < 2 < 2

MW-205 11-Sep-98 85515-21 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 3 < 2

MW-205 18-Mar-99 E2J8855 < 10 < I < I < 10 < JO <" 10 < 5 5.8

MW-205 DUP J8-Mar-99 E218856 < 10 < 1 < J < 10. < 10 < 10 < 5 8.2 J MW-205 5-0ct-99 E234135 < 10 < J < 1 < 10 < JO < 10 < 5 4.7

MW-205 14-Mar-OO E245038 < JO < J < J < 10 < 10 < 10 < 5 < 3

MW-205 IO-Nov-00 8-Sep-27 < lO < I < I .< 10 < 10 < 10 < 5 < 3

MW-205 22-May-01 17-Nov-65 < 10 < 1 < ·1 < 10 < 10 < 10 < 5 3.2

MW-205 13-Nov-OI 10-Aug-02 < 10 < I < I < 10 < 10 < 10 < 5 < 3

MW-205 24-Mav-02 9-Seo-39 ·< 10 < 1 < J < JO < 10 < 10 - < 5 < 3 MW-205 .. 5-Nov-02 23-Jul-75 < JO < J < I < JO < JO < 10 < 5 < 3

MW-205 13-Mav-03 26,Jtil-08 < 10 < r < I < 10 < JO < 10 < 5 3.9

MW-205 5-Nov-03 2"Mar-55 < 10 < J < I < 10 < 10 < 10 < 5 4:2

IMW-205 J9cMav-04 7-Seo-90 < JO < J < I ·< JO < 10 < 10 < 5 8 MW-205 i4-Dec-04 10-Janc38 < 10 < J < I < 10 < 10 <: IO < ·5 <" 3

IMW-205 7-Seo-05 J4-Nov-8J < 10 < .J <, J < JO < 10 < Io < 5 < 3

MW-205 1 J-Aor-06 0604183-02 < 1 < 1 < 1 < 1 < 1 < I < 5 3.6

IMW-205 l l-Oct-06 0610230-12 < 1 < 1 <. 1 < 1 < 1 < 1 - . -IMW-205 25-Aor-07 0705020.'03 < 1 < 1 < ·1 < 1 < 1 < 1 <· 5 13

IMW-205 6-Nov-07 0711197-13 < I <: 1 < 1 < 1 < I < 1 < 5 4.9 IMW-205 23-Aor-08 080451-1-10 < 1 < 1 < 1 < 1 < I < 1 < 5 < 3

IMW-205 11-Nov-08 0811333-02 < 1 < I < I < I < 1 < I < 5 7.2

MW-205 24-Aor-09 M82335-11 < 0.31 < 0.38 < 0.52 ·­ < 0.49 < 0.23 .< 0.26 < . 3.2 6.6

· IMW-205 19-0ct-10 , 10 I 0518-03 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5,0 < 3.0

MW-205 3-May-11 1105132~13 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 3.0

IMW-205 6-0ct-11 1110152-68 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 3:0

MW-205 27-Aor-12 J205050-14 < 1.0 < 1.0 .<. 1.0 < 1.0 < 1.0 < 1.0 < 5.0 4.4

MW-205 11-0ct-12 1210383-02 < 1.0 < , 1.0 < 1.0 < 1.0 .< 1.0 < 1.0 . < 5:0. 7,0

MW-205 26-Apr-13 1304463-12 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < i'O < 5.0 7.0

IMW-205 . 9-0ct-13 1310241-12 < 1.0 < 1.0 < ·1.0 < 1.0 < 1.0 < 1.0 < 5.0 5.4 ,.

Rqxintuhii._~201~_nn Page 15 of22 Sec Notes on Page 22

TABLE3

SUMMARY OF GROUNDWATER SAMPLING RESULTS SPRINGFIELD TOWNSHIP SUPERFUND SITE

Well Number Sample Date ..

Sample I.D. Number TOLUENE TCE 1,1-DCE 1,1,1-TCA 1,1-0CA

CHLORO­BENZENE AS 3 LEAD 3

RAS (ug/L) 1,000 5 7 -200 880 100 20 50

MW-302S 6-Jul-94 A4347218 0.1 J < I < 1 < I < I < I < 3 J 22 J

MW-302S 4-0ct-94 940888-18 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u 1.7 B MW-302S 10-Jan-95 950012-01 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u < I u MW-302S 14-Aor-95 950210-15 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u < 2 u MW-302S l l-Jul-95 950474-08 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u < 2 u MW-302S 9-Jan-96 960004-07 < 0.5 u < 0.5 u < 0.5 u < ·o.5 u < 0.5 u < 0.5 u < 2 u < 1 u IMW-302S 9-Jul-96 960530-05 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u 2 B 3.7

IMW-302S 15-Jan-97 WW2648161 0.11 J < 0.05 < 0.05 ·< 0.04 < 0.04 < 0.05 < 1.7 1.42 J

IMW-302S I l-Jul-97 WW274083 ·< 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 2 < 2

IMW-302S 13-Jan-98 WW2859294 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 2 < 2

IMW-302S l l-Seo-98 85515-22 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 3.3 < 2

MW-302S 17-Mar-99 E218839 < 10 < 1 < 1 < 10 < 10 < 10 < 5 < 3

MW-302S 5-0ct-99 - - - - - - - - -

MW-3020 6-Jill-94 A4347214 < I < I < I < I < 1 < 1 < 3 12

MW-3020 5-0ct-94 . 940888-17 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 U· < 0.5 u < 2 u 8

MW-3020 l l-Jan-95 950012-18 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u 1.8 UB MW-3020 14-Aor-95" 950210-14 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u 12

MW-3020 l 1-Jul-95 950474-09 < 0.5 u <. 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u 5.6

MW-30200UP 11-Jul-95 950474-10 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u 5.9 MW-3020 9-Jan-96 960004-12 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u 7.I

MW-3020 9-Jul-96 960530-01 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u 11.6

MW-3020 15-Jan-97 WW2648163 < 0.05 < 0.05 < 0.05 < 0.04 < 0.04 < 0.05 < 1.7 5.4 MW-3020 l 1-Jul-97 WW2740384 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 2 < 2

MW-3020 13-Jan-98 Ww2859295 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 2 2.44

MW-3020 1l-Sep-98. 85515-23 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 2 6.5

MW-3020 17-Mar-99 E218840 < 10 < 1 < 1 < 10 < 10 < 10 < 5 7.8

MW-3020 5-0ct-99 E234143 < 10 < 1 < 1 < 10 < IO < 10 < 5 <. 3

v!W-3020 14-Mar-OO E245042 < 10 < 1 < 1 < 10 < 10 < 10 < 5 4.2

v!W-3020 10-Nov-00 29-Aug-27 < 10 < I < I < IO < 10 < 10 "< 5 4.1

v!W-3020 22-Mav-Ol I l-Nov-65 < 10 < 1 < I < 10 < 10 < 10 < 5 < 3

v!W-3020 9-Nov-01 7-Aug-02 < 10 < I < I < 10 < 10 < 10 < 5 9.4

MW-3020 23-May-02 15-Sep-39 < 10 < 1 < I < 10 < 10 < 10 < 5 < 3

MW-3020 5-Nov-02 24-Jul-75 < 10 < I < 1 < 10 < 10 < 10 < 5 < 3

MW-3020 13-Mav-03 29-Jul-08· < 10 < I < I < 10 < 10 < 10 < 5 9.7

MW-3020 6-Nov-03 3-Mar-55 < 10 < 1 < 1 < 10 < IO < 10 < 5 7.4

MW-3020 18-May-04 8-Sep-90 < 10 < 1 <" I < 10 < 10 < 10 < .5 < 3

MW-3020 14-0ec-04 13-Jan-38 < 10 < I < I < 10 < 10 < 10 < 5 4

MW-3020 30-Aug-05 IO-Seo-81 < 10 < I < 1 < 10 < 10 < 10 < 5 < 3

MW,3020 10-Anr-06 0604127-07 < I < I < I < I < 1 < 1 < 5 5.2

MW-3020 5-0ct-06 0610230-10 < 1. < 1 < 1 < I < 1 < 1 - -MW-3020 23-Apr-07 070447-03 < I < I < 1 <" I < I < I < 5 5.5

MW-3020 5-Nov-07 0711197-04 < 1 < I < · l < 1 < I < 1 < 5 5.2

IMW-3020 23-Aor-08 0804511-07 < I < 1 < 1 < I < I < 1 < 5 9.7

IMW-3020 f3-Nov-08 0811333-14 < 1 < 1 < 1 < I < I < 1 < 5 12

IMW-3020 27-Aor-09 M82477-4 < 0.31 < "0.38 < 0.52 < 0.49 <· 0.23 < 0.26 < 3.2 7.8

MW-3020 19-0ct-10 1010518-04 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 4.1

MW-3020 3-May-11 1105132-14 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 3.0

MW-3020 6-0ct-11 1110152-17 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 3.0

IMW-3020 27-Aor-12 1205050-07 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 3.0

MW-3020 ll-Oct-12 1210383-04 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 7.9

IMW-3020 26-Apr-13 1304463-13 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 3.1

MW-3020 7-0ct-13 1310241-13 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 3.0

r·

Page 16 of22 See Notes on Page 22

TABLEJ

SUMMARY OF GROUNDWATER SAMPLING RESULTS SPRINGFIELD TOWNSHIP SUPERFUND SITE

Well Number -· Sample Date

Sample l.D. Number TOLUENE

.. T<::E. 1,1-DCE 1,1,1-TCA 1,1-J)CA

CHLORO­BENZENE

AS J. LEAD 3

RAS(ug/L) I 000 5 7 20_0 880 10_0 20 50

MW-304S ll-Jul-94 A4355604 < 1 < 1 < 1 0.1 J < 1 < 1 < 3 5 J

MW-304SDUP ll-Jul-94 A4355604FD < I < 1 < 1 0.1 J < I < 1 NA NA

MW-304S 4-0ct-94 . 940888-19 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u 2.4 B 4.6

MW-304S ll-Jan-95 950012-12 < 0.5 u -< 0.5 u < 0.5 u < . 0,5 u < 0.5 u < 0.5 u < 2 .U < 4 u IMW-304S 14-Apr-95 950210-02 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < OS u < 0.5 u < 2 u < 2 u IMW-304S 12-Jul-95 950482-07 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < o·.5 u < 0.5 u < 2 u 4.9

IMW-304S IO-Jan-96 960014-10 < 0.5 u < 0.5 u < 0.5 u < . 0:5 u < 0:5 u < 0.5 u < 2 u 3.8

MW-304S IO-Jul-96 960530-19 < 0.5 u < 0.5 u < 0.5 u .< 0.5 u < 0:5 u < 0.5 u 3.9 B < 2 u MW-304S 16-Jan-97 WW2648208 < 0.05 < 0.05 < 0.05 0.38 J < 0.04 < 0.05 ·< 1.7 12.8

MW-304S 11-Ju1'9i WWi743085 < 0.5 < 0.5 '< 0.5 b.55 < 0.5 < 0.5 < 2 21.8

[MW-304S 147Jan-98 WW2859296 < 0.5 < 0.5 < 0.5 < 0:5 < 0.5 < 0.5 < 2 < 2

[MW-304S 1l-Sep-98 85515-24 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 2.7 28

[MW-304S. 16-Mar-99 E218833 < 10 < 1 < j < 10 < 10 < 10 < 5 < 3

MW-304S 5-0ct-99 E234147 < 10 < 1 < 1 < 10 < 10 < '10 < 5 < 3

IMW-304S DUP 5-0ct'99 E234148 < 10 < 1 < 1 < 10 < 10 < 10 < 5 < 3 IMW-304S 13-Mar-OO E245027 < 10 J < I J < 1 < 10 < 10 < 10 < 5 < 3 IMW-304S. 9-Nov-00 30-Au1t-27 < 10 < 1 < 1 < 10 < 10 < 10 < 5 < 3

MW-304S 23-Mav-Ol ·. 20,Nov-65 < 10 < I < 1 < 10 < 10 < 10 < 5 < 3

MW-304S 14-Nov-OI 18-Jul-03 < 10 < 1 < l < 10 < 10 < 10 < 5 < 3

[MW-304S 24-May-02 6-Sep-39 < 10 < 1 < 1 < 10 < 10 .< 10 < 5 .< 3

Mw-304S 8-Nov-02 6-Jan-77 < 10 < I < I < 10 < 10 < IO < 5 < 3

MW-304S 15-May-03 5-Au1t-08 < 10 < 1 < 1 < 10 < 10 < 10 < 5 8.9

1Mw-304S 5-Nov-03 4-Mar-55 < IO < 1 < I < IO < IO < IO < 5 < 3

IMW-304S I9-May-04 9-Sep-90. < 10 < 1 < 1 < 10 "< 10 < 10 < 5 3.1

IMW-304S 9-Dec-04 29-Jun-36 < 10 < 1 < 1 < 10 < 10 < 10 < 5 < 3 MW-304S 2-Sep-05 8-Nov-81 < 10 < 1 < 1 < 10 < 10 < 10 < 5 < 3

MW-304S 6-Apr-06 0604127-03 < I < I < 1 -< 1 < I <. I < 5 < 3

MW-304SDUP 6-Apr-06 0604127-02 < I <. I < I < I < 1 < 1 < 5 < 3

[MW-304S 3-0ct-06 0610230-02 < 1 < 1 < 1 < 1 < 1 < 1 - -IMW-304S 26-Apr-07 0705020-09 < 1 < 1 < 1 < 1 < I .< 1 < 5 13

IMW-304S 6-Nov-07 07i 1197-12 < 1, < 1 < 1 < I ·< 1 < I < 5 < 3

MW-304S 12-Nov-08 0811333-09 < 1 < 1 < 1 I.I < 1 < 1 < 5 < 3

IMW-304S 28-Apr-09 M82477-8 < 0.31 < 0.38· < 0.52 3 < 0.23 < 0:26 - -MW-304S - Filtered 28-Apr-09 M82477-8A - . - - - - - < 3.2 < 1.8

MW-304S 20-0ct-10 1010518,11 . < 1.0 < 1.0 < 1.0 1.4 < 1.0 < 1.0 - -MW-304S - Filtered 20-0ct-10 10105I8-11 ' - - - - - - < 5.0 < 3.0

IMW-304S 5-Mav-11 1105132-20 .. < LO < 1.0 < 1.0 3.7 < 1.0 < 1.0 - -IMW-304S - Filtered 5-Mav-H 1105132-20 - - - - - - < 5.0 < 3.0

IMW-304S 5-0ct-11 1110152-05 < 1.0 < 1.0 < 1.0 5.0 < 1.0 < 1.0 - -MW-304S - Filtered 5-0ct-11 1110152-05 - - - - - - < 5.0 < 3.0 MW-304S 24-Apr-12 1i04488-08 < 1.0 < 1.0 < 1.0 5.0 < 1.0 < 1.0 - -MW-304S - Filtered 24-Apr-12 . 1204488-08 - - - - - - < 5.0 9.8

IW-304S 10-0ct-12 1210383-06 < 1.0 6.6 < 1.0 1.6 < 1.0 < 1.0 - -IW-304S - Filtered 10-0ct-12 1210383-06 - - - c - - < 5c0 < 3.0

IW-304S 22-Apr-13 1304405-02 '< 1.0 14 < 1.0 < 1.0 < 1.0 < 1.0 - -IW-304S - Filtered 22-Anr-13 1304405-0:i - - - - - - < 5.0 < 3.0

'1W-304S 7-0ct-13 1310241-14 < 1.0 14 < 1.0 < 1.0 < 1.0 < 1.0 - -IAW-304S - Filtered 7-0ct-13 1310241-14 - - - - ' - < 5.0 < 3.0

'1W-304S DUP 7-0ct-13. 1310241-18 < 1.0 l3 < 1.0 < 1.0 < 1.0 < 1.0 - ' IAW-304S DUP - Filtered 7'0ct-13 1310241-18 - - - - ' - < 5.0 < 3.0

f1::~dClllSprm,tiddlfive-YcuRco.iowllF\"i ..'C.une111:GZ.AI

Rcpll'IT.nia_ 0cta0cr 101~_nn Page 17 of22 ·See Notes on Page 22

TABLE3

SUMMARY OF GROUNDWATER SAMPLING RESUL TS SPRINGFIELD TOWNSHIP SUPERFUND SITE

Well Number Sample Date Sampli: I.D.

Nwnber TOLUENE TCE l,I-DCE 1,1,1-TCA 1,1-DCA CHLO RO­BENZENE AS J LEAD 3

RAS (ug/L) 1,000 5 7 200 880 100 20 50

MW-305S 6-Jul-94 A4347215 < I < I < I < I < I < 1 < 3 < 2 J MW-305S • IO-Oct-94 · 940888-20/38 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u < I u MW-305S IO-Jan-95 950012-IO < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.·5 u < 0.5 u < 2 u < 1 u MW-305S 14-Apr-95 950210-09 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u < 2 u MW-305SDUP I4-Apr-95. 950210-08 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u < 2 u ~-305S I 2-Jul-95 950482-IO < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u < 2 u MW-305SDUP 12-Jul-95 950482-09 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u < 2 u MW-305S 9-Jan-96 960004-06 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u < I u MW-305S IO-Jul-96 960530-I8 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u < 2 u MW-305S I6-Jan-97 WW26482IO < 0.05 < 0.05 < 0.05 O.II J < 0.04 < 0.05 < 1.7 1.34 J MW-305S I I-Jul-97 WW274086 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 2 < 2 MW-305S I4-Jan-98 WW2859297 < 0.5 < 0.5 < 0.5 < 0.5 .< 0.5 .< 0.5 < 2 < 2 MW-305S I I-Sep-98 855I5-25. < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 3 < 2 MW-305S 17-Mar-99 E2I8842 < 10 < I < I < IO < IO < IO < 5 < 3

MW-305S 6-0ct-99 E234I56 < IO < I < I < IO < IO < IO < 5 < 3

MW-305S I3-Mar-OO E24503I < IO < I < I < 10 < IO < IO < 5 < 3 MW-305S 9-Nov-00 3I-Aug-27 < IO < I < I < IO < IO < IO < 5 < 3

MW-305S ., 22-May,OI I5-Nov-65 < IO < I < I < IO < IO < 10 < 5 < 3

MW-305S I5-Nov-01 22-Jul-03 < IO < I < I < IO < 10 < 10 < 5 5.7

MW-305S 24-Mav-02 7-Sep-39 < IO < 1 < 1 < IO < IO < IO < 5 < 3 MW-305S 6-Nov-02 25-Jul-75 < IO < I < I .< IO < IO < IO < 5 < 3 MW-305S I4-May-03 · 8-0ct-07 < IO < I < I < IO < JO < IO < 5 < 3

MW-305S 6-Nov-03 26-Feb-55 < 10 < 1 < 1 < 10 < IO < IO < 5 < 3

MW-305S 20-Mav-04 IO-SeP-90 < IO < I < I < IO < IO < 10 < 5 < 3 MW-305S I4-Dec-04 9-Jan-38 < IO <· I < I < IO < 10 < IO < 5 < 3 MW-305S 2-SeP-05 I6-Nov-81 < IO < I < I < IO < IO < IO < 5 < 3

MW-305S I2-Jan-06 - - - - - - - < 5 5.7 MW-305S I I-Apr-06 06042I6-02 < I < I < I < I < I < I '< 5 < 3 MW-305S 3-0ct-06 0610230-01 < I < I < I < I < I < I - -MW-305S 26-APT-07 0705020-07 < I < I < I < I < I < I < 5 33 MW-305 22-Apr-08 08045I I-04 < I < I < I < I < I < I < 5 I3 MW-305 I I-Nov-08 08I 1333-06 < I < I < I < I < I < I < 5 6.3

MW-305S 28-APT-09 M82477-7 < 0.3I < 0.38 < 0.52 < 0.49 < 0.23 < 0.26 - -MW-305S -. Filtered 28-Apr-09 M82477-7A - - - - - < 3.2 < 1.8

~-305S 20-0ct-IO IOI05I8-IO < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 - -Mw-305S - Filtered 20-0ct-IO !010518-IO - - - - - - < 5.0 < 3.0

MW-305S 4-Mav-1 I I 105132-07 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 -MW-305S - Filtered 4-May-II 1105132-07 - - - - - - < 5.0 < 3.0

MW-305S 5-0ct-I I 1 I IOI52-16 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 - -MW-305S - Filtered 5-0ct-I I I I IOI52-I6 - - - - - ' - < 5.0 < 3.0

MW-305S 25-Apr-12 1205050-02 < 1.0 < 1.0 < 1.0 < I.O < 1.0 < 1.0 - -MW-305S - Filtered 25-ADr-I2 1205050-02 - - - - - - < 5.0 < 3.0

MW-305S IO-Oct-12 12!0383-05 < 1.0. < 1.0· < 1.0 < 1.0 < 1.0 < 1.0 -MW-305S - Filtered 10-0ct-I2 I2I0383-05 - - - - - < 5.0 < 3.0

MW-305S ' 23-Apr-13 1304405-09 < 1.0 < 1.0 < 1.0 < 1.6 < 1.0 < 1.0 - -MW-305S - Filtered 23-Apr-13 I304405-09 - - - - - - < 5.0 < 3.0

MW-305S 7-0ct-13 I3I024I-15 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 - -MW-305S - Filtered 7-0ct-13 13l024I-I5 - - - - - - < 5.0 < 3.0

Page 18 of22 See Notes on Page 12

TABLE3

SUMMARY OF GROUNDWATER SAMPLING RESULTS SPRINGFIELD TOWNSHIP SUPERFUND SITE

Sampld.D.Well Number Sample Date CHLO RO­ 3Number TOLUENE TCE !J-DCE 1,1,1-TCA 1,1-DCA AS LEAD 3

BENZENE RAS (ul?!L\ 1 000 5 7 200 880 100 20 50'

MW-306S 4-0ct-94 940888-21 < 0.5 u < 0.5 U. < 0.5 u < 0.5 ti < 0.5 u < 0.5 u 2.1 J < I u MW-306S 10-Jan-95 950012-02 < 0.5 u < 0.5 u < o.5 u < 0.5 u < 0.5 u ·< 0.5 u < 2 u < 8.5 u IMW-306S DUP IO-Jan-95 - 950012-03 < .0.5 u < 0.5 u· < 0.5 u < 0.5 u < 0.5 u <· 0.5 u < 2 u < 1 u MW-306S 14-Aor-95 950210-07 < .o.5. u < 0.5 u ,< 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u < 2 u MW-306S 12-Jul-95 950482-01. < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < '0.5 u < 2 u < 2 u lMW-306S 9-Jan-96 960004-08 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u < I u MW-306S 9-Ju1'96 960530-04 < 0.5 U, < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u 2.1 B < 2 u MW-306S 16-Jan-97 WW2648209 < 0.05 < 0.05 < 0.05 0.23 J < 0.04 < 0.05 < 1.7 1.31 J

lMW-306S ll-Jul-97 WW2743087 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 2 3.4

lMW-306S 14-Jan-98 WW2859298 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 2 < 2

MW-306S 1 l-Seo-98 855i5-26 < 0.5 < ·0.5 < o.·§ < 0.5 < 0.5 < 0.5 3.6 < 2

lMW-306S 16-Mar-99 E218832. < 10 < 1 < I < 10 < 10 < 10 < 5 < 3

IMW-306S 4-0ct-99 E234144 < 10 < 1 < I < 10 < 10 <· 10 ·< 5 < 3

MW-306S 14-Mar-OO E245044 < 10 < 1 < I < 10 < 10 < 10 < 5 < 3

MW-306S 10-Nov-OO 1-Seo-27 < 10 1 < I < 10 < 10 < 10 < 5 <· 3.<

MW-306S 22-Mav-OI 12-Nov-65 < 10 < I < I < 10 ·< 10 < 10 < 5 < ·3

MW-306S 9-Nov-01 6-Au2-02 < 10 < I < I < JO < 10 < JO < 5 < 3 MW-306S 23-May-02 J6,Sep-39 < JO < J < J < 10 < JO < JO < 5 < 3

MW-306S 8-Nov-02 7-Jan-77 < 10 < J < J < JO < JO < 10 < 5 < 3

MW-306S J4-May-03 l-Aug-08 < JO < I < J < 10 < JO < JO 9.2 19

MW-306S 5-Nov-63 5-Mar-55 < 10 < I < J < 10 < 10 < 10 < 5 < 3

MW-306S 20-Mav-04 JJ-Sep-90 <' 10 < I < J < JO < JO < 10 < 5 <· 3

MW-306S 8-Dec-04 20-Nov-35 < JO < 1 < J < 10 < JO < JO < 5 < 3

MW-306S 30-Au2-05 1 J-Seo-8J < 10 < 1 < J < 10 < 10 < 10 < 5 < 3 MW-306S J2-Aor-06 0604216-04 < 1 < J < J < J < I < 1 < 5 < 3

MW-306S 5-0ct-06 . 06J0230-J J < J < 1 < 1 < 1 < 1 < J - ­MW-306S 23-Apr-07 070447-01 < 1 < 1 < J < I < J < I < 5 .< 3

MW-306S 5-Nov-07 0711197-03 <· J < J < I < I < J < I < 5 <· 3

MW-306S 23-Anr-08 080451 J-06 < I < 1 < J ·< I < J < J < 5 < 3 <.MW-306SDUP 23-Anr-08 08045J J-ll J < J < I < J < J < I < 5 < 3

· MW'306S J3-Nov-08 08J J333-13 < J .< J < J < I < J < J < 5 < 3

MW-306S 29-Apr-09 M82477-10 < 0.31 <· 0.38 < 0.52 < 0.49 < 0.23 < 0.26 < 3.2 < 1.8

MW-306S 18-0ct-IO J010518-15 < 1.0 < 1.0 . < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 3.0 MWc306S 3-May-11 J J05132-03 < 1.0 . < 1.0 < J.O < J.O < 1.0 < 1.0 < 5.0 < 3.0

MW-306S 6-0ct-11 11 JOJ52-07 < LO < 1.0 < 1.0 < 1.0 < 1.0 < J.O < 5.0 < 3.0 MW-306S 23-Anr-12 J204488-03 < 1.0 < 1.0 < 1.0 < J.O < 1.0 < 1.0 < 5.0 < 3.0 MW-306S 9-0ct-J2 1210230-0J < 1.0 < 1.0 < 1.0 ·< 1.0 < l.O <· 1.0 < 5.0 < 3.0 MW-306S 24-Apr-J3 J304463-0J < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 3.0

MW'306S 7-0ct-13 J3J024J-16 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 3.0

'. I

RcpartT.W..:_OcuMr2013_T3T.3 Page 19 of22 See Notes on Page 22

TABLE3

SUMMARY OF GROUNDWATER SAMPLING RESULTS SPRINGFIELD TOWNSHIP SUPERFUND SITE

Well Number Sample Date Sample I.D.

Number TOLUENE TCE 1,1-DCE 1,1,1-TCA 1,1-DCA CHLO RO­BENZENE

AS J LEAD 3

RAS (ug/L) 1,000 5 7 200 880 100 20 50

!Nickson Well 7-Anr-95 950210-29 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 2 u < 2 u [Nickson Well IO-Jul-96 960535-12 < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u < 0.5 u 4.2 B < 2 u [Nickson Well I 2-Jul-97 WW2743090 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 2 < 2 [Nickson Well 11-Sep-98 85515-27 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 4.7 < 2

!Nickson Well 6-0ct-99 E234157 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 2 < 2 !Nickson Well 25-May-01 23-Nov-65 < 10 < I < I < 10 < 10 < 10 < 5 16 3

!Nickson Well 15-Nov-01 20-Jul-03 < 10 < I < I < 10 < 10 < 10 < 5 < 3 !Nickson Well 28-Mav-02 I l-Sep-39 < 10 < I < I < 10 < 10 < 10 < 5 < 3 !Nickson Well 8-Nov-02 9-Jan-77 < io < I < I < 10 "< 10 < 10 < 5 < 3

!Nickson Well 15-Mav-03 6-Aue-08 < 10 < I < I < 10 < 10 < 10 < 5 < 3 Nickson Well 5-Nov-03 8-Mar-55 < 10 < I < I < 10 < 10 < 10 < 5 < 3 Nickson Well 19-May-04 18-Sep-90 < 10 < I < I < 10 < 10 < 10 < 5 < 3

Nickson Well 8-Dec-04 19-Nov-35 < 10 < I < I < 10 < 10 < 10 < 5 < 3

Nickson Well 1-Sep-05 24-Sen-81 < 10 < I < I < 10 < 10 < 10 < 5 < 3

Nickson Well 23-Aor-08 0804511-09 < I < I < I < I < I < I < 5 < 3

Nickson Well IO-Nov-08 0811333-01 < I < I < I < I < I < I < 5 3.2

Nickson Well 24-Aor-09 M82335-13 < 0.31 < 0.38 < 0.52 < 0.49 < 0.23 < 0.26 < 3.2 < 1.8 Nickson Well 20-0ct-10 1010518-12 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 3.0

MW-400-1 6-0ct-05 - - < I - - - - -MW-400-1 12-Jan-06 - - - - - - .< 5 < 3 MW-400-1 12-Apr-06 0604214-02 < I < I < I < I < I < I < 5 < 3 MW-400-2 6-0ct-05 - ' - < I - - - - - -MW-400-2 23-Nov-05 - - < I - - - - - -MW-400-2 12-Jan-06 - - - - - - - < 5 < 3

MW-400-2 18-Apr-06 0604326-02 < I ~ < I < ) . < I < I < I < 5 < 3 MW-400-2 6-May-11 1105193-02 < 1.0 < 1.0 < 1.0 1.4 < l.O < 1.0 - -MW-400-2 25-Apr-12 1205050-01 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 -MW-400-2 - Filtered 25-Apr-12 1205050-01 - - - - < 5.0 < 3.0 MW-400-3 6-0ct-05 - - < 1 - - - - - -MW-400-3 20-Dec-05 - - < 1 - - - - - -MW-400-3 DUP 20-Dec-05 - - < 1 - - - - - -MW-400-3 12-Jan-06 - - < I - - - - 8.2 II

MW-400-3 18-Apr-06 0604326-06 < 1 < I < 1 < I < 1 < I < 5 < 3

MW-400-4 6-0ct-05 - - < 1 - - - - - -MW-400-4 18-Nov~05 - - < I - - ' - - - -MW-400-4 15-Dec-05 - - < 1 - - - ' -MW-400-4 DUP 15-Dec-05 - - < 1 - - - - - -IMW-400-4 13-Jan-06 - - < 1 - - - - 6.4 7.9

[MW-400-4 26-Anr-06 - - < 1 - - - - - -MW-400-5 6-0ct-05 - - < 1 - - - - - -MW-400-5 17-Nov-05 - - < 1 - - - - - ' MW-400-5. 26-Apr-06 0604518-03 < 1 < 1 < 1 < 1 < I < 1 < 5 < 3. MW-400-6 6-0ct-05 - - < 1 - - - - - -[MW-400-6 17-Nov-05 - - < 1 - - - - - -MW-400-6 l-May-06 0605030-01 < I < I < I < 1 < I < I < 5 < 3

MW-400-7 17-Nov-05 - - < I - - - - - -- ­ MW-400-7 1-Mav-06 0605030-02 < I < 1 < 1 < I < I < I < 5 < 3

Rqm.Tabla_Oclobll 2013_TJTI Page 20 of22 See Notes on Page 22

TABLEJ

SUMMARY OF GROUNDWATER SAMPLING RESULTS SPRINGFIELD TOWNSHIP SUPERFUND SITE

Well Number Sample Date Sampld.D..

Number TOLUENE TCE 1,1-DCE 1,1,1-TCA 1,1-DCA CHLO RO­BENZENE

AS 3 LEAD 3

RAS (ug/L) I 000 5 7 200 880 100 20· 50

MW-401-3 12-0ct-05 - - 12 - - - - - -MW-401-3 20-Dec-05 - - S.9 - - - - ' - -MW-401-3 16-Jan-06 - - 9.1 - - - - - -MW-401-3 DUP 16-Jan-06 - - 5.6 - - - - - -MW-401-3 7-Anr-06 0604127-06 < I 57 < I < I < I < 1 - -MW-401-3 25-Apr-07 0705020-02 < 1 4 < I < I < I < 1 5.7 7.3

MW-401-3 6-Nov-07 0711197-14 < 1 57 < I < I < I < I < 5 7.3

IMW-401-3 24-Apr-08 0804542-02 < I . 32 < I < I < 1 < I < 5 < 3

MW-401-3 5-Mav-11 1105132-10 < 1 17 < 1 < I < I < I - -Mw-401-3 - Filtered 5-Mav-11 1105132-10 - - - - - - < 5 < 3

MW-401-3 4-0ct-11 1110152-10 < 1.0 10 < 1.0 < 1.0 < 1.0 < 1.0 - -[MW-401-3 - Filtered 4-0ct-11 1110152-10 - - - - - - < 5.0 < 3.0

IMW-401-3 23-Apr-12 1204488-01 < 1.0 220 < 1.0 < 1.0 < 1.0 < 1.0 - -MW-401-3 - Filtered 23-Apr-12 1204488-01 - - - - - - < 5.0 < 3.0 MW-401-3 23-Apr-13 1304405-04 < 1.0 8.S < 1.0 < 1.0 < 1.0 < 1.0 - -MW-401-3 - Filtered 23-Apr-13 1304405-04 - - - - - - < 5.0 < 3.0 IMW-401-4 12-0ct-05 - - < 1 - - - - - -IMW-401-4 23-Nov-05 - - < I - - - - - -IMW-401-4 16-Jan-06 - - < I - - - - - -MW-401-4 JO-Apr-06 0604183-01 < I < 1 < I < I < 1 < I '· -[MW-401-4 MW-401-4

6-Nov-07 24-Apr-08

0711197-15 0804542-04

< <

I I

< <

J. I

< <

I I

< <

I , 1

< <

1 1

< <

I I

< <

5 5

< <

3 3

[MW-401-4 5-Mav-11 1105132-21 < 1.0 3.5 < 1.0 < 1.0 < 1.0 < 1.0 -IMW-401-4 - Filtered 5-Mav-11 1105132-21 - - - - - - < 5.0 < 3.0 IMW-401-4 23-Ai:>r-12 1204488-02 < 1.0 2.9 < 1.0 < 1.0 < 1.0 < 1.0 - -MW-401-4 - Filtered 23-Apr-12 1204488-02 - - - - - - < 5.0 < 3.0 MW-401-5 12-0ct-05 - -· < 1 - - - - - -MW-401-5 23-Nov-05 - - < I - - - - - -MW-401-5 14-Apr-06 0604274-05 < I < I < I < I < I < 1 - -MW-401~ 12-0ct-05 - - < I - - - - - -MW-401~' 23-Nov-05 - - < I - - - - - -MW-401~ 18-Anr-06 0604326-01 < 1 < I < I < I < I < I - -MW-401-7 12-0ct-05 - - < I - - - - - -MW-401-7 23-Nov-05 - - < I - - - - - -MW-401-7 DUP 23-Nov-05 - - < I - - - - - -MW-401-7 26-Anr-06 0604518-01 < 1 < I <· 1 < I < I < I - -

RcportT1b1a.~2013nn Page 21 of22 See Notes on Page 22

TABLE3

SUMMARY OF _CROUNDWATER SAMPLING RESULTS SPRINGFIELD TOWNSIDP SUPERF_UND SITE

Well Number Sample Date Sample LD.

Number TOLUENE TCE 1,l~DCE 1,1,1-TCA 1,1-DCA CHLO RO­BENZENE

AS J LEAD'

RAS(ul!/l) I 000 5 7 200 880 100 20 50

MW-410 5-Mav-11 1105132-19 < LO < LO < LO < LO < LO < LO < 5.0 < 3_0 MW-410 5-0ct-11 1110152-04 < LO < LO < 1-0 < 1-0 < LO < 1-0 < 5.0 4_9 MW-410 - Filtered 4-0ct-11 1110152-03 - - - - - - < 4_0 < 2.0 MW-410 24-Apr-12 1204488-07 < LO < LO < LO < LO < LO < LO < 5.0 < 3_0 MW-410 l l-Oct-12 1210383-03 < LO < LO < 1-0 < LO < LO < LO < 5.0 < 3_0

MW-410 23-Aor-13 1304405-06 < LO < LO < 1-0 < 1-0 L6 < LO < 5.0 < 3_0

MW-410 10-0ct-13 1310241-17 < 1-0 < LO < LO < 1-0 1-6 < 1-0 < 5_0 < 3.0

Well damaged or inaccessible due to soil remediation activities_ 2 MW-3S and MW-30 were previously reported in EarthTecb reports as "MW-3SR" and "MW-3DR", respectively_ 3 In November 2000 and prior sampling events, the wells were purged and sampled with bailers, and the groundwater samples for metal analysis were

filtered in the field. In May 2001, the wells were purged and sampled with bailers, and the groundwater samples for metal analysis were not filtered and submitted for total metal analysis_ In November 2001, the wells were purged and sampled with low flow sampling techniques, and the groundwater samples for metal analysis were not filtered and submitted for total metal analysis_ Note that the groundwater samples in May 2001 may contain solids and the data overestimate metal concentrations in groundwater due to the sampliog method utilized. Low flow sampliog techniques will be used in the future sampling events_

4 Indicates the spike percent recovery was outside the control limits_ -Due to the relatively high turbidity, the sample was filtered in the field for dissolved metal analysis, and a non-filtered sample was also collected for total metal analysis_ The reported result showo in the table is dissolved lead concentration

ug/L Denotes microgram per liter, or, parts per billion (ppb). < Denotes the detection limit determined by the limitations of the procedure or QC considerations.

DUP Denotes duplicate sample_ J Indicates the compound was positively identified, but the concentration is below the Practical Quaotitation Limit (PQL)

and the value is an approximate conceotration_ U Indicates that constituent was not detected. B Indicates that constituent was also detected in blank sample_ NA Indicates that the sample was not analyzed for particular constituent:

Inorganic analyses for this well were from a sample collected on I 0/04/94; VOCs analyses were run on a sample collected on I Oil 0194_ The resampling of this well on I 0/10/94 was prompted by the breakage of the original voe· sample following shipment to the laboratory_

Bold Iildicates detected coricentration exceeds the remedial action standard. Abbreviations· TCE - Tricbloroethene 1,1-DCE - 1,1-Dicbloroethene 1,1,1-TCA- 1,1,1-Trichlorciethane 1,1-DCA - 1,1-Dichloroethane AS -Arsenic

RcponT.aNa_Oc!obcr 2013_nn Page 22 of22 see Notes on Page 22