jfd electronics/channel master sitesemspub.epa.gov/work/04/11014577.pdf · jfd electronics/channel...

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RECORD OF DECISION AMENDMENT

JFD ELECTRONICS/CHANNEL MASTER SITE OXFORD, GRANVILLE COUNTY, NORTH CAROLINA

PREPARED BY:

U.S. ENVIRONMENTAL PROTECTION AGENCY REGION 4

ATLANTA, GEORGIA

September 2015

11014577

Table of Contents

1.0 Introduction to the Site and Statement of Purpose 1

2.0 Site History, Contamination and Selected Remedy 1

2.1 Site History 2

2.2 Site Contamination 2

2.3 Summary of Remedy 3

3.0 Basis for the Document 5

4.0 Description of the Record of Decision Amendment 5

5.0 Remedial Action Objectives 6

6.0 Evaluation of Alternatives 6

7.0 Support Agency Comments 7

8.0 Statutory Determinations 7

9.0 Public Participation Compliance 7

TOCl

Appendices

Appendix A Soil/Sludge Remediation Tables and Record Drawings

Appendix B State Concurrence Letter

List of Figures Figure 1-1 Site Location Map

Figure 2-1 Soil Analytical Results

Figure 3-1 Groundwater Isoconcentration Map

Figure 4-1 Area of Interests On-Site and off-Site, Groundwater and Soil

roc 2

Acronyms and Abbreviations

List of Acronyms

ARAR Applicable or Relevant and Appropriate Requirement

ATSDR Agency for Toxic Substances and Disease Registry

CIC Community Involvement Coordinator

COC Contaminant of Concem

CERCLA Comprehensive Environmental Response, Compensation, and Liability Act

CFR Code of Federal Regulations

DCE 1,2-Dichloroethene

EPA United States Environmental Protection Agency

ESD Explanation of Significant Differences

FS Feasibility Study

FYR Five-Year Review

MCL Maximum Contaminant Level

ug/L micrograms per liter

mg/L milligrams per liter

NCDHR North Carolina Department of Human Resources

NCDENR North Carolina Department of Environment and Natural Resources

NCP National Contingency Plan

NPL NatioMl Priorities List

O&M Operation and Maintenance

PCE Tetrachloroethene

POTW Publicly Owned Treatment Works

PRP Potentially Responsible Party

RA Remedial Action

RAO Remedial Action Objective

RCRA Resource Conservation and Recovery Act

RD Remedial Design

Rl Remedial Investigation

T0C3

ROD Record of Decision

RPM Remedial Project Manager

TBC To-Be-Considered Criteria

TCE Trichloroethene

VOC Volatile Organic Compound

T0C4

THE DECLARATION FOR THE RECORD OF DECISION AMENDMENT

SITE NAME AND LOCATION

The JFD Electronics/Channel Master Site (the Site) is located in Oxford, Granville County, North Carolina and consists of approximately 13 acres of land, part of which is covered by the concrete slabs and foundations of two former buildings. An antenna, amplifier and booster manufacturing facility operated at the Site fi-om 1961 to 1984. The manufacturing process involved copper and nickel electroplating and chrome conversion coating of antenna parts. The United States Environmental Protection Agency's (EPA) Identification Number is NCD122263825. The lead agency for the Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (CERCLA) regulatory response at the site is the EPA. The North Carolina Department of Environment and Natural Resources (NCDENR) is the support agency. The Site was placed on the National Priorities List (NPL) on October 4,1989. The approximate location of the Site is shown on Figure 1 -1.

STATEMENT OF BASIS AND PURPOSE

The Record of Decision Amendment (AROD) is needed to select Institutional Controls (ICs) in the form of Land Use Restrictions as a component of the remedial activities at the Site. The State of North Carolina concurs with the amended remedy.

DESCRIPTION OF THE MODIFIED REMEDY

A Record of Decision (ROD) was signed on September 10, 1992 that selected a final remedy to address groundwater, soil and sludge contamination. The ROD was modified three times, through a 1996 Explanation of Significant Differences (ESD) for groundwater, a 1999 ROD Amendment for soil and sludge, and a 2000 ESD for soils and sludge. The current remedy calls for a groimdwater pimip-and-treat system to address Volatile organic compounds (VOCs) and cyanide in the groundwater and for the excavation and off-site transportation, treatment and disposal of metals and cyanide-contaminated sludge and soil. AH accessible soil and sludge contaminated above cleanup goals specified by the 1992 ROD have been removed and disposed off-Site. However, ICs are still required for soils to prevent unacceptable residential exposure to contaminated soils remaining on-Site since clean-up goals for hexavalent chromium specified by the 1992 ROD and achieved during remedial action activities exceed current acceptable cancer risk thresholds for both the residential adult and child exposure scenarios and the current hazard quotient for a residential child exposme scenario. Additionally, contaminated soils potentially remain beneath the rmaining concrete slabs and foimdations.

i

The remedial action provided in the ROD and Amendment to the ROD and subsequent BSD did not include ICs for soil and groundwater. The purpose of this ROD Amendment is to announce a modification of the remedy to include ICs for the Site. ICs in the form of a Land Use Restrictions under North Carolina General Statute 130A-310.3(f) must be implemented at the Site because the remedial action results in hazardous substance, pollutants, or pollutants, or contaminants remaining at the Site above levels that allow for unlimited use and unrestricted exposure to soil and groundwater.

STATUTORY DETERMINATIONS

The modified remedy is protective of human health and the environment, complies with State and Federal requirements that are legally applicable or relevant and appropriate to the extent practicable, and is cost effective. This modified remedy utilizes permanent solutions and alternative treatment or resource recovery technologies, to the maximum extent practicable, and satisfies the preference for remedies that reduce toxicity, mobility, or volume as a principle element. The AROD will become part of the Administrative Record FUe (NCP 300.825(a) (2)).

AUTHORIZING SIGNATURES

Franklin E. Hill, Director Superfund Division Date

1.0 INTRODUCTION TO THE SITE AND STATEMENT OF PURPOSE

Site Name; JFD Electronics/Channel Master Superfimd Site (Site)

Site Location: Oxford, North Carolina

Lead Agencv: United States Environmental Protection Agency ^EPAl

Swp<?rt AggffigYiNgrth Carolma aqd Nstwa^ fi^SQuryes (ISfCDENR)

This decision document presents an Amendment to the Record of Decision (AROD) for the JFD Electronics/Channel Master Superfimd Site (Site), located in Oxford, North Carolina. The original Record of Decision (ROD) for this Site was signed on September 10,1992. An ESD regarding the groundwater portion of the remedy was sighed on January 24, 1996. An AROD to the Record of Decision regarding the soil and sludge portion of the remedy was signed on May 4, 1999. A second ESD was signed on July 19,2000, enacting a significant change in the soils portion of the Remedial Action. Following the implementation of the Remedial Action (RA) on September 28, 2000, a Five Year Review (FYR) was finalized on September 30,2005. A Second FYR was fin^ized September 22,2010.

This AROD is issued in accordance with § 117(c) of the Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (CERCLA), 42 U.S.C. § 9601 et seq., as amended by the Superfimd Amendments and Reauthorization Act of 1986 (SARA), and the National Oil and Hazardous Substances Pollution Contingency Plan (NCP), § 300.435(c) (2) (i).

ADMINISTRATIVE RECORD AVAILABILITY

The AROD will become part of the Administrative Record for the JFD Electronics/Channel Master Superfimd Site (NCP 300.825(a) (2)), which has been developed in accordance with § 113 (k) of CERCLA, 42 U.S.C. § 9613 (k).

The Administrative Record is available for review at the Richard H. Thomton Library, 210 Main Street, Oxford, North Carolina, 27565, Monday - Thursday, 10:00 a.m. to 5:00 p.m., Friday -Saturday, 10:00a.m. to 1:00 p.m.. Sun., 1:00 p.m. to 5:00 p.m. The Administrative Record is also available for review at U.S. EPA Region 4,11th Floor Library, 61 Forsyth Street SW, Atlanta, Georgia 30303, Monday - Friday, 7:30 a.m. to 4:30 p.m.

2.0 SITE HISTORY, CONTAMINATION AND SELECTED REMEDY

2.1 Site History From 1961 to 1979, JFD Electronics (a subsidiary of Unimax Corporation) manufactured television antennas at the facility. The manufacturing process involved the copper/nickel electroplating and chrome-conversion coating of antenna parts. An unlined lagoon was built firom 1964 to 1965 to dispose of the wastewater generated during the electroplating and chrome conversion processes. This

1

wastewater contained chromium, lead, copper, nickel and cyanide, and was treated on site in a facility consisting of interconnected concrete tanks. The sludge generated from the treatment process was disposed in eleven sludge drying beds along the southem property boundary.

In October 1979, Channel Master Satellite Systems, Inc. (Channel Master; a subsidiary of Avnet Inc.) began leasing the Site. Channel Master bought the Site in 1980 and used it to produce satellite systems from 1980 to 1984. Indoor and outdoor antennas, amplifiers, and boosters were also assembled on site during this time period. Organic solvents were reportedly used on-Site for cleaning tools and the antenna elements prior to sending them off-She for electroplating. Manufacturing and assembly operations at the Site ceased in 1984. Representatives from the North Carolina Department of Human Resources (NCDHR), predecessor of the NCDENR, conducted a Site inspection on February 23,1987. Analysis of the lagoon sludge and adjacent soils revealed the presence of chromium, lead, arsenic, cyanide and Volatile Organic Compounds (VOCs). Ground water samples also revealed the presence of VOCs, primarily trichloroethene (TCE), tetrachloroethene (PCE), 1,2,-dichloroethene (DCE), and xylenes.

Channel Master initiated cleanup activities at the Site in June 1987 imder the supervision of the NCDHR. These activities included excavating approximately 17,000 cubic yards of contaminated sludge/soil and disposing of the material in a permitted waste disposal facility. Approximately 2,000 cubic yards of VOC-contaminated soil were ^so excavated and thermally treated. In July 1988, Chaimel Master excavated and disposed of two fuel oil tanks and one concrete waste oil tank. Site visits were conducted by representatives of the Agency for Toxic Substances and Disease Registry (ATSDR) in March 1989 and the EPA ia September 1989. Based on these inspections and on information collected since 1988, both the EPA and ATSDR concluded that contamination still existed at the Site, which warranted further investigation. Site contamination included soils contaminated with VOCs, groimdwater contaminated with VOCs and sludge/soil contaminated with metals. The EPA proposed the Site for listing on the National Priorities List (NPL) in June 1988 and finalized the Site on the NPL in October 1989.

A Remedial Investigation/Feasibility Study (RI/FS) report was completed in 1992 and the ROD was issued by September 1992. The Remedial Design for groundwater was implemented and construction began on the groundwater in May 1998 and is ongoing. Accessible cyanides and metals impacted soils and sludges were removed from the Site in 2000. However, clean-up goals for hexavalent chromium specified by the 1992 ROD and achieved during remedial action activities exceed current acceptable cancer risk thresholds for both the residential adult and child exposure scenarios and the current hazard quotient for a residential child exposure scenario (see Appendix A-Soil/Sludge Remediation Tables and Record Drawings). The buildings at the Site were demolished in early 2008, and only the concrete slabs and foundations remain, as well as contaminated soils that potentially lie beneath these structures.

2.2 Site Contamination All accessible soil and sludge contaminated above cleanup goals specified by the 1992 ROD have been reinoved and disposed off-Site. However, clean-up goals for hexavalent chromium specified by the 1992 ROD and achieved during remedial action activities exceed current acceptable cancer risk thresholds for both the residential adult and child exposure scenarios and the current hazard quotient for a residential child exposure scenario (see Appendix A - Soil/Sludge Remediation Tables and Record Drawings). Additionally, contaminated soils potentially remain beneath the remaining concrete

2

slabs and foundations.

Currently there is no risk to human health from contaminated groundwater, because presently the onSite and near off-Site groundwater is not being used for drinking water. A recent receptor survey of nearby wells indicates that there are presently no public water wells within a half-mile radius of the Site; however, there are numerous private water wells within that same area. Groundwater at the Site is a potential future source of drinking water as designated by the North Carolina Groundwater Classification. ICs are necessary to prohibit the installation of on-Site potable water wells until the groundwater is restored to drinking water standards.

In 2007, vapor'intrusion modeling and risk evaluation was perfonned at the Site using the results of soil vapor sampling conducted up-gradient of the Oak Ridge housing development. Four chlorinated VOCs were detected in one or more of the five soil vapor samples: PCE, TCE, DCE and vinyl chloride. Modeling of the predicted potential migration of these VOCs from the soil gas to indoor air detennined the highest predicted potential cancer risk for a resident as 1x10-5• This risk estimate is within the EPA's acceptable risk range, indicating that no unacceptable cancer risks are expected for resident receptors.

In September 2010, the EPA completed and issued the second FYR Report for the Site as required under the ROD. The EPA did not include a protectiveness statement in the FYR report, but rather identified eight recommended actions to be completed in order to evaluate remedy protectiveness. One of the recommended actions was to re-evaluate the potential human health risk associated with the groundwater to indoor air vapor intrusion pathway. The EPA noted increased concentrations of chlorinated volatile organic compounds in the vicinity of the down gradient Oak Ridge property (monitoring well CMMW23) and requested a second vapor intrusion study.

The EPA issued a letter to the Potentially Responsible Party (PRP) dated J~ptuary 18,2011, requesting them to address the recommended actions including evaluatioy of the potential for vapor intrusion at Oak Ridge. A draft work plan that addressed all eight actions 1~as prepared in compliance with the EPA's January 18, 2011 request and was submitted in March 2011. Based on the EPA's review of the work plan and subsequent correspondence, it was concluded that a standalone work plan should be prepared to specifically address the potential health risk associated with the vapor intrusion pathway. In December 2011, a standalone vapor intrusion work plan was submitted to the EPA.

In 2013, the EPA reviewed the PRP's evaluation of vapor intrusion at the Oak Ridge Apartments. The results of the April2013 indoor air, outdoor air, and sub-slab vapor sampling, in addition to the June 2013 groundwater sampling results, indicated that there is not a complete groundwater to indoor air vapor intrusion pathway at Oak Ridge that could create a potential risk/hazard above the EPA target levels.

2.3 Summary of Remedy

A ROD was signed on September 10, 1992 that selected a final remedy to address groundwater, soil and sludge contamination. An ESD regarding the groundwater portion of the remedy was signed on January 24, 1996. The ESD eliminated chlorination, precipitation/filtration and carbon absorption treatments and added six additional extraction wells and treatment ofVOCs via air stripping as well as discharge of treated groundwater to surface water or the publicly owned treatment works. An AROD regarding the soil and sludge portion of the remedy was signed on May 4, 1999, which excavated

3

approximately 1,750 cubic yards of cyanide-impacted sludge. The major components of the modified remedy include: reducing hexavalent chromium to trivalent chromium and excavating/transporting cyanided-impacted sludge and metal-impacted soil to an off-Site treatment/disposal facility. The contaminated soil that did not require treatment for metals would remain on site for treatment and disposal. A second BSD pertaining to the soils portion of the RA was signed on July 19, 2000. The BSD was issued to change the disposal of the metal-contaminated soils to excavation and transportation offsite to a Subtitle C landfill for disposal. Construction of the remedy was completed on September 28,2000.

The selected remedy, including all the changes outlined in the above actions, include:

GROUNDWATER (Ongoing)

1. Bxtraction of groimdwater from the Site in the overburden/fractured bedrock aquifer tiiat is contaminated above Maximum Contaminant Levels (MCLs) or the North Carolina Groundwater Standards;

2. On-Site treatment of extracted groundwater via alkaline chlorination, precipitation/ filtration, air stripping, and carbon adsorption to reduce contaminants to either MCLs or State Standards, whichever are more protective;

3. Discharge of treated groundwater to the local Publicly Owned Treatment Works or a nearby surface water pathway; and

4. Continued monitoring for contaminants in groundwater.

SLUDGE/SOIL (Completed)

The sludge and soil component of the remedy was modified in the 2000 BSD. The 1992 ROD specified on-Site soil/sludge stabilization followed by on-Site disposal, capping and monitoring of cap maintenance. The 2000 BSD specified that all soil/sludge would be removed from the Site. No monitoring and maintenance, other than establishing grass, would be required.

For cyanide and metals-contaminated sludge, the 2000 BSD specified:

1.Bxcavating approximately 2,300 cubic yards of cyanide-impacted sludge and transporting the sludge off-Site to an appropriate treatment and disposal facility;

2. Treating the sludge with alkaline chlorination to reduce levels of cyanide;

3. Reducing any hexavalent chromium present in the sludge to trivalent chromium; and

4. Stabilizing the sludge for metals to reach the disposal requirements established by the disposal facility, and disposing of the treated and stabilized sludge in the off- Site facility.

For metals-contaminated soil, which did not require treatment for cyanide, but did exceed remediation levels for metals, the BSD specified:

1. Excavating approximately 650 cubic yards of metals-impacted soils;

2. Transporting the soils off-Site to an appropriate treatment and disposal facility, and

3. Disposing of the soils in the off-Site facility.

The excavated areas were backfilled, graded, covered with topsoil and seeded with a vegetative cover.

3.0 BASIS FOR DOCUMENT

As discussed in the 2008 Second FYR Report, ICs were not included as part of the remedy in the 1992 ROD. The modified remedy includes ICs for soil and groundwater at the Site. Perpetual Land Use Restrictions miist be implemented in order to prevent unacceptable residential exposure to contaminated soils remaining on-Site since clean-up goads for hexavalent chromium specified by the 1992 ROD and achieved during remedial action activities exceed current acceptable cancer risk thresholds for both the residential adult and child exposure scenarios and the current hazard quotient for a residential child exposure scenario. See Appendix A - Soil/Sludge Remediation Tables and Record Drawings. Additionally, contaminated soils potentially remain beneath concrete slab and foundation.

Perpetual Land Use Restrictions must be implemented in order to prohibit the use of groundwater within the footprint of the plume since groundwater MCLs have not been met. In addition to restricting the groundwater on the JFD Electronics/Channel Master property, there are parcels outlined below where groundwater contamination has migrated and that also need to have restrictive covenants. The objective of the ICs is to ensure that people do not use and come in contact with contaminated groundwater beneath the Site. These restrictions will be in place until the clean-up levels specified for the groundwater in the ROD are achieved.

4.0 DESCRIPTION OF THE RECORD OF DECISION AMENDMENT

The modified remedy includes ICs for the groimdwater and soil at the Site. See Appendix A - Soil Sludge Remediation Tables and Record Drawings as well as Figures 2-1 and 3-1 for illustration of soil and groundwater analytical results. Perpetual Land Use Restrictions must be implemented in order to prevent unacceptable residential exposure to contaminated soils remaining on-Site since clean-up goals for hexavalent chromium specified by the 1992 ROD and achieved during remedial action activities exceed current acceptable cancer risk thresholds for both the residential adult and child exposure scenarios and the current hazard quotient for a residential child exposure scenario. Additionally, contaminated soils potentially remain beneath concrete slab and foundation.

Perpetual Land Use Restrictions must be implemented in order to prohibit the use of groimdwater within the foo^rint of the plume since groimdwater MCLs have not been met. In addition to restricting the groundwater on the JFD Electronics/Channel Master property, there are parcels outlined below where groundwater contamination has migrated and will also need to have restrictive covenants.

The objective of the groundwater ICs is to ensure that people do not come in contact with contaminated groundwater imtil the cleanup levels specified in the ROD are met and groimdwater is

returned to its beneficial use. The PRP is currently working with residential property owners to implement covenants to restrict the use of groundwater for drinking water purposes within the fooQirint of the groundwater plume (Figure 4-1). The covenant .will outline requirements of current and future property owners to ensure that the grotmdwater is restricted for drinking water pmposes (i.e. by preventing installation of private drinking water wells until cleanup levels are met and the aqmfer(s) are retumed back to beneficial use). The PRP will be responsible for implementing, monitoring and maintaining the ICs as outlined below:

Area of Interest- On-Site and Off-Site Ground Water and Soil

Media Institutional Controls Needed

Institutional Controls called for in the 1992 Decision Documents

Impacted Parcels

histitutional Control Objective

Instrument in Place

Ground water and soil on-Site

Yes No 191207588264 Prevent groundwater well installatior and disturbance ofomSite contaminated soils.

None

Ground Water (off-Site)

Yes No 191207575903, 191211577430, 191211567918, 191211673266, 191211679410, 191207687582, 191207781219, 191208785087, 191208786340, and 191208789619

Prevent groundwater well installation.

None

5.0 REMEDIAL ACTION OBJECTIVES

The groundwater remedial objectives as defined in the September 1992 ROD include the following:

• To prevent human exposure to contaminated groundwater and soil.

• Protect uncontaminated groundwater by minimizing continued migration of the existing plume of contaminated grotmdwater.

• Restore contaminated ground water to its former beneficial use aquifer (i.e., an existing or potential source of potable water).

6.0 EVALUATION OF ALTERNATIVES

In accordance with CERCLA and the NCP, the threshold requirements for any remedial action

6

are protection of human health and the environment and compliance with applicable or relevant and appropriate requirements (ARARs).

7.0 SUPPORT AGENCY COMMENTS

The EPA consulted with the NCDENR and provided it the opportunity to comment on this AROD in accordance with NCP § 300.435 (c) (2) and § 300.435 (c)(2)(i) and CERCLA §121(f). The NCDENR concuired with this AROD in a letter dated August 31,2015.

8.0 STATUTORY DETERMINATIONS

The EPA has determined that this significant change complies with the statutory requirements of CERCLA § 121,42 U.S.C. § 9621, is protective of human health and the environment, complies with Federal and State requirements that are applicable or relevant and appropriate to the RA, is cost-effective, and utilizes permanent solutions and alternative treatment technologies to the maximum extent practicable.

Because this remedy modification will result in hazardous substances, pollutants, or contaminants remaining on site above levels that allow for unlimited use and unrestricted exposure, the five year statutory review will continue to ensure that the remedy is, or will be protective of human health and the environment.

9.0 PUBLIC PARTICIPATION COMPLIANCE

The public participation and record reqiiirements set out in NCP §§ 300.435(c) (2) and 300.825(b) have been met by publishing a notice summarizing the AROD in a major local newspaper of general circulation, holding a 30-day public comment period and public meeting, if requested, and making the AROD and supporting information available to the public in the Administrative Record and information repository.

The proposed plan for the JFD Electronics/Channel Master Site was released to the public for comment on February 17, 2015. The document was made available to the public in both the administrative record and an information repository maintained at the EPA Superfund Record Center in Region 4 and at the Richard H. Thornton Library. In addition, over 100 copies of the Proposed Plan were mailed to citizens in neighborhoods adjacent to the Site. A public comment period on tiie documents was held from February 17 to March 18,2015. The citizens did not request to have a public meeting for this Site. The EPA received no comments during the comment period; therefore, no Responsiveness Summary is included in titis ROD.

AUTHORIZING SIGNATURE

,, Franklin E. Hill, Direct Superfimd Division Date

ÎvUP-S Depth: 3-4 ft bis | cis-l,2-Dichloroether»e IJ P

Trichloroethene 4.2 1

Chloroform [a- ' I cistfldfegitilôethene | SarB^le Locatfffts ̂

QXPQpg'"îiSampj^#L(xi^' e

UjiJ". Tetrachtoroethene Trichloroethene

atsiftfe Hydrant (Surveys trnm-h: \ - . ,

Storm Sewer Line (Surveyed)

Sanitary Sewer Line (Surveyed)

•" — Sanitary Sewer Line (Data from City of Oxford)

— — Approxi mate Sanitary Sewer Location (Field Verified)

J: The aralyte was positively iderrtified. The associated numerical vritie Is the a^roximate concerrtration of the analyte h the sample. Shaded; Concentration exceeded the Industrial Soil RSLs and Protection of GW SSLs. RSLs: Regional Screening Levels. Summary Table, April 2012, United States Environmental Protection Agency, Pacific Southwest, Region 8 SSLs: Groundwater Soil-Screening Levels In the Summary Table, April 2008, Region 9

Utility locations were based on a survey perfornwd by Stantec Consulting Services, Inc, Raleigh NC (Dated October 14,2012),

MIP-5B Depth: 4-5 ft bis Tetrachtoroethene 2.6 Trichloroethene 160

MIP-5A Depth: 3-4 ft bis

Chloroform 3.1 ci s-l,2-Di chloroethene 8.8

Methylene chloride 44 Tetrachtoroethene 45

Toluene 0.99 J Trichloroethene 15000

MlP-ll Depth: 4-5 ft bis cis-l^-Dichloroethene 20

Tetrachtoroethene 3 Trichloroethene 140

Figure 2-1

CMMW15 4/2/2014 TCE PCE cis-l,2-DCE VC

27 <1.0

<1.0

i—

TCE 121 PCE 3.1

cis-l,2-DCE <1.0

|vc <i.o|

AX:y 5#'

CHANNEL MAS^ BUILDING FOUNDATIOr

' '" Mi '/H

A » • .,•» ~''

|'?|apiîiîW25 i»

•feMMWOQ

PW^5^ /

TCE PCE cis-l,2-DCE VC

9,800

1,100

<500

PW-5B-•CMIVIW04 4/2/2014

TCE 2,800

PCE 400

cis-l,2-DCE 130

VC

^RaHo&E ' ..^^FpUNDATION^

, CMMyvwCfc •.

<25it»^ -ri-

[TCE PCE

Ichlorobenzene B?!

cis-l,2-DCE SBI [yc 1.71

•iMMWlO 4/2/2014

11,1-DCE 10

TCE 1,100

PCE 200

cis-l,2-DCE 60

VC <10

HOUÎ

¥ .

m

,fr-^

FrcE 33m

PCE 33

cis-l,2-DCE 26

VC <2.0

sihMi i-: ;rf *''' • •• r

i6. I^Ti

ITCE 241 PCE 160

Ichlorobenzene 2.4 cls-l,2-DCE 180

[trans-l,2-DCE 1.3 |vc

TCE 100

PCE 510

cis-l,2-DCE 180

VC T <5.0

11

Notes: (ug/L) micrograms per liter <1.0 - Compounds was not detected above quantitation limit

Frci <i.o| PCE <1.0

cis-l,2-DCE <1.0

|vc <i.o|

4/1/2014 CMMW17 4/1/2014 *4; TCE PCE cis-l,2-DCE VC

17 340

TCE PCE cis-l,2-DCE VC

<1.0 TCE

<1.0 PCE

86 cis-l,2-DCE <1.0 VC

<1.0 <1.0 <1.0 <1.0

fstar®!:: liititaMais®, yUEt^ t^HslsraOng.\[

Monitoring Wells A Pumping Well

Groundwater • - • Epttemeral Stream

© Observation Well Intermittent Stream

intermediate Weil Culvert

Ijl- Top of Rock Well

Sitallow Well

• Shallow Bedrock Well

# Deep Bedrock Well

, Parcel Boundaries

Well ID —1 1,1-DCE IC

— Date

TCE 1,100

PCE 200

cis-l,2-DCE 60

VC <10

Nntes 1,1-DCE = 1,1-DicNoroethene TCE = Trichloroethene

cis-1,2T3CE = cis-1,2-Dichloroethene trans-1,2T)CE = trans-1,2-Dichloroethene VC = Vinyl chloride

I I Estimated VOC Plume (MIP/DPT AECOM 2012) 11nch eiquais 150 feet 0 45 90 180 270 360

• Feet

Key Chlorinated Solvent Concentrations In Groundwater, April 2014

JFD Electronics/Channel Master 620 West Industry Drive Oxford, North Carolina

June 2014 Project Number: 60304768

'IGP, swisstopo, artdjthe",^S UserfO^

A^COAA Figure 5-/

. . i- . ». . . ,

Legend

I—^ Site Boundary J Parcel Boundaiy

Sources: Source: Esri, Digita/G/obe. GeoEye, Earthstar Geographies CNES/A'rbus OS, USDA. USGS.AEX. Getmapping, Aerogrid, IGN. !GP, swisstopo, and the OS User Community

Approximate Source Area 1335-303Parcel Number

Approxi mate Extent of VOC Plume -+— Railroad

o Figure 4-1 Area oflnterests On-site and off-site. Groundwater and Soil

JFD Electronics/Channel Master Superfund Site Oxford, Granville County, North Carolina

Figure ^-1

-• 'is J-' _ .._L _

ARCADIS Table 3.3. Summary ofPostexcavation Level II Confinnation Analylical Results, SoiVSiudgeRemediation, JFD Electronics/Channel Master Site, Oxford, North Carolina. Page 1 of?

Sample Location

Sample Description. SampleiD

Date Sampled;

Sludge-Dzying Bed 0

Bottom SB-OB 8/23/00

A//S Walls SB-ONE 8/23/00

S/WWalls SB-OSW 8/23/00

Sluqge-DzyingBed 1

Bottom SB-IB 8/23/00

North WaU SB-IN 8/23/00

South Wall SB-IS 8/23/00

East Wall SB-IE 8/23/00

West Wall SB-IW 8/23/00

Constituents (mg/kg.dw)

Hexavalent Chromium (USEPA 7196A) Antimony (USEPA 6010) Nickel (USEPA 6010)

Total Cyanide (USEPA 9010) Amenable Cyanide (USEPA 9010)

Percent Solids

Remediation •• ;i.L c}:-:

f;(!J "It ' Ml VI ^ J.

0.63 0.99 0.70 <0.45 <0.45 0.96 <0.46 0.72 <2.3 <2.4 <2.2 <2.3 <2.1 <2.6 <2.1 <2.3

24 170 20 8.4 110 120 12 120

0.66 62.1 <0.57 <0.54 <0.49 3.73 0.72 2.62 <0.53 25.8 <0.57 <0.54 <0.49 <1.3 0.63 1.84

,78 85 83 87 88 78 86 88

NIE SIW mg/1cg.dw

North and east wall combined. South and west wall combined. Milligrams per Idlo_gram on a dty weight basis. Constituoitwasnot detected above the quantitation tirniT.

Constituent concentration exceeds remediation level.

g;\env\ifdcbann\nc202.220\CompletionReport\Tahle3-3\2120/02

ARCADIS Table 3.3. Summary ofPostexcavation Level 11 Confiimation Analytical Results, Soil/Sludge Remediation, JFD Electronics/Channel Master Site, Oxford, North Carolina. Page2of7

Sample Location: Sludge-Drying Bed 2 Sludge-Drying Bed 3

Sample Description Bottom North Wall South Wall East Wall West Wall Bottom North Wall South Wall East Wall West Wall SampleiD SB-2B SB-2N SB-2S SB-2E SB-2W SB-3B SB-3N SB-3S SB-3E SB-3W

Date Sampled 8/17/00 8/17/00 8/17/00 8/17/00 8/17/00 8/17/00 8/17/00 8/17/00 8/17/00 8/17/00

CnnstitiiMitfl ^ml nf?* R^^iytioti,

Hexavalent Chromium (USEP A 7196 A) --i'.-"-'jf •- • 0.60 <0.45 0.54 <0.48 <0.49- 0.68 <0.46 0.91 0.93 0.88 Antimony (USEPA 6010) 3iQ <2.1 <2.3 <2.3 <2.2 <2.5 <2.4 <2.3 <2.4 <2.2 <2.5 Nickel (USEPA 6010) 81 19 280 41 22 29 27 74 60 57

Total Cyanide (USEPA 9010) 0.50 <0.53 28.8 <0.44 <0.48 <0.49 <0.26 1.91 0.89 1.90 Amenable Cyanide (USEPA 9010) <0.62 <0.57 <0.62 <0.61 <0.62 <0.60 <0.58 <1.5 <0.62 <0.62

Percent Solids 81 87 80 82 80 84 86 82 81 80

NIEW mglkg.dw

^ '*.*1

North and east wall combined. South and west wall combined. Milligrams per Idlogiam on a dry weight basis. Constituent was not detected above the

limil

CoDstituoit concentration exceeds rBmedisdon level

g:\env\ifdchann\nc202.220\Completion Report\Table3-3\2I20/02

ARCADIS Table 3.3. Summary ofPostexcavation Level n Confirmation Analytical Results, SoiVSludge Remediation, JFD Electronics/Channel Master Site, Oxford, North Carolina. Page3 of7

Sample Location Sludge-Drying Bed 4 Sludge-Drying Bed 5

Sample Description Bottom North WaU South Wall East Wall West Wall Bottom North Wall South Wall East WaU West Wall SiampleiD SB-4B SB-4N SB-4S SB-4E SB-4W SB-SB SB-SN SB-SS SB-SE SB-SW

Date Sampled: 8/17/00 8/17/00 8/17/00 8/17/00 8/17/00 8/23/00 8/23/00 8/23/00 8/23/00 8/23/00

Remediation, Constituents (mWJc .dw) :,;, iLevI

HexavalentChromium(USEPA 7196A)

1- M

I-

t 1 1 0.6 <0.47 1.4 0.51 0.77 •0.77 0.58 <0.45 <0.45 0.66 Antimony (USEPA 6010) 1 1 1

<2.2 <2.1 <2.8 <2.4 <2.0 <2.4 <2.4 <2.3 <2.1 <2.5 Nickel (USEPA 6010) 1 "II 39 34 68 42 79 37 60 — 20 54 100

Total Cyanide (USEPA 9010) ri <0.32 <0.44 <0.41 <0.41 <0.26 <0.41 1.37 <0.41 <0.47 <0.54 Amenable Cyanide (USEPA 9010)

, .\ <0.60 <0J9 <0.70 <0.60 <0.59 <0.41 <0.53 <0.41 . <0.47 <0.54

Percent Solids 83 85 71 83 85 85 85 86 86 81

NIESIff mglkg.dw

North and east wall combined. South and west wall combined. Milligrams per kilogram on a dry weight basis. Constituent was not detected above the qoantitation limit. Constituent concentzBtion exceeds remediatiott level.

g:\eav\jfdohann\nc202.220\Complction ReportMable 3-3\2/20/02

ARCADIS Table 3.3. Suitunary ofPostexcavation Level 11 Confinnation Analytical Results, SoiVSiudgeRemediation, JFD Electronics/Chanhel Master Site, Oxford, North Carolina. Page4of7.

Sample Location Sludge-D.tyingBed 6 Sludge-Drying Bed 7

Sample Description SampleiD

Date Sampled;

Bottom SB-6B 8/23/00

North Wall SB-6N 8/23/00

South Waif SB-6S 8/23/00

East Wall SB-6E 8/23/00

West Wan SB-6W 8/23/00


South WaU SB-7S 8/23/00

East Wall SB-7E

8/23/00

West Wall. SB-7W 8/23/00

Constituents lmWJcg.dw) I^m^iation

Hexavalent Chromium (USEPA 7196A) AntimoiQf (USEPA 6010) Nickel (USEPA 6010)


I --H V< «:; Sf: r- / •

M:3iO'

<0.46 <2.1 140

14.2 <1.1

0.62 <2.4

62

3.29 <0.41

<0.45 <2.1

29

<0.51 <0.51

6.53 <2.1 44

3.40 0.69

0.45 <2.3

55

<0.45 <0.45

2.7 <2.4 510

17 <0.95

0.82 <2.4

59

0.72 <0.42

0.59 <2.1 SI

<0.42 <0.42

<0.46 <2.2 45

<0.58 <0.58

Percent Solids V-' :-30 ....

85 83 87 85 87 84 83 88 84

• %. 1".. .--i

NIE sm mglkg.dw

North and east wall combined. South and west wall combined. Mflligrams perlcilogiamon a dly weight basis. Constitueiitwasnot detected above the quantitation limit. CousUluent concentration exceeds lemediatibn level

g:\env\iiachann\nc202.220\CompletionReport\TabIe3-3\2/20/02

ARCADIS Table 3.3. Suinmary ofPostexcavation Level 11 Confinnation Analytical Results, Soil/Sludge Remediation, JFD Electronics/Channel Master Site, Oxford, North Carolina. PageS of7

Sample Location; Sludge-Drying Bed 8 Sludge-Drying Bed 9

Sample Description: SampleiD

Date Sampled

Bottom SB-SB 8/25/00


South Wall SB-8S

8/25/00

West Wall SB-8W 8/25/00


South Wall SB-9S 8/25/00


West Wall SB-9W 8/25/00

Constituents (mglkg.dw) Rmediation >Levr

Hexavalent Chromium (USEPA 7196A) Antimony (USEFA 6010) Nickel (USEPA 6010)


r'

<0.53 <2.5

13

<0.64 <0.64

<0.47 <2.2 200

14.5 <0.52

0.84 <2.2 31

4.12 0.96

<0.49 <2.5

21

<0.50 <0.50

<0.55 <2.6 20

<0.64 <0.64

0.62 <2.4

66

0.83 <0.42

<0.49 <2.3

20

<0.41 <0.41

<0.48 <2.4

18

<0.47 <0.47

Percent Solids '*' 9

73 83 82 81 71 82 79 82

NIE S.W ii%Ikg.dw

< IBS

North and east wall combined. South and west wall combined. Milligrams pa Icilogr.un on a dry weight basis. Constituent was not detected above the qiiawritatinn limit

finnf^trarinn

exceeds remediation level

g:\env\jfdcbann\nc202220\Con^iletion ReportMable 3-3\2y20/02

ARCADIS Table 3.3. Summary ofPostexcavation Level 11 Coniinnation AnalyticResults, Soil/Sludge Remediation, JFD Electronics/Channel Master Site, Oxford, North Carolina. Page6of7

Sample Location:

Sample Description: Sample ID

Date Sampled:

Sludge-Drying Bed 10

North Wall SB-ION 8/25/00

South Wall SB-IOS 8/25/00

East Wall SB-lOE 8/25/00

West Wall SB-lOW 8/25/00


Bottom SB-UB 8/25/00

North Wall SB-UN 8/25/00

South Wall SB-llS 8/25/00

East Wan West Wall SB-llE SB-UW 8/25/00 8/25/00

Constituents (mg!kg.dw)

Hexavalent Chromium (USEPA 7196A) Antimony (USEPA 6010) Nickel (USEPA 6010)


Percent Solids

Reiped^ation s:;|ivei:.:, :

- -

0.49 <0.57 <0.47 0.73 0.51 <0.46 <0.45 <0.45 <0.43 <2.2 <2.7 <2.2 <2.2 <2.6 <2.1 <2.3 <2.3 <2.2 18 40 18 24 53 8 27 22 18

<0.36 1.67 <0.29 <0.37 0.39 <0.46 <0.35 <0.30 <0.19 <0.36 <0.61 <0.29 <0.37 <0.24 <0.46 <0.35 <0.30 <0.19

90 68 84 90 78 86 87 87 90

N/E SIH mglkg.dw

North and east wall combined. South and west wall combined.. MDligiams per ldlo.giam on a dly weight basis. Constituent was not detected above the qnantituriftn limit.

Constituent concenlTation exceeds remediation level.

g:\env.\j£dchann\nc202220\Con5)letionRq)oitMable3-3\2y20/02

ARCADIS Table 3.3. Summary ofPostexcavation Level II Confinnation Analytical Results, SoiVSludge Remediation, JFO Electronics/Giamiel Master Site, Oxford, North Carolina. Page? of?

Constituents (m2?k2;.dw)

Sample Location: Grid 2 Grid 5 Grid 9 Grid 18 Grid 21 Grid 22

Sample Description: Bottom Bottom Bottom Bottom Bottom Bottom Sample ID: G2-Conf. G5-Conf. G9-Conf. OlS^Conf. G21-Conf. G22-Conf.

Date^Sampled: 8/17/00 8/17/00 8/23/00 8/23/00 8/25/00 8/25/00

r :: . HexavaIentChromium(USEPA7196A) ~'"3;cDJ.

.y.^lOO:;:

.30.

11 E —:;.y.

Antimony(USEP A60 10) Nickel (USEPA 6010)

Total Cyanide (USEPA 9010) AmenableCyaHide(USEPA9010)

Percent Solids

NIE5/1P mglkg.dw

'i f I ill II I M I

NorA and east wall combined. Soutit and west wall combined. Milligrams per kilqj:IlUil on a diy weight basis.

ConstitaeDt was not detected above Ute quantitation liinit Constituent concentration exceeds remediation level.

<0.45 0.72 <0.52 <0.54 <0.57 <0.52 <2.1 <2.3 <2.4 <2.7 <2.6 <2.7

15 24 120 37 530 150

<o.4o <o.5o U.S 0.48 17.8 <0.67 <0.54 <0.62 1.82 <0.26 <12 <0.67

88 80 76 74 69 75

g;\cnv\jfdcbann\nc20122p\Conq>letion Report\Table3-3\2/20/02

ARCADIS

Table 3.4. Gomparison ofPostexcavation Level I land CLP/CLP Equivalaat Confinnation Analytical Results, SoiVSiudge Remediation, JFD Electronics/Channel Master Site, Oxford, North Carolina.

Sample Location:

Sample Description: SampleiD:

Date Sampled: Laboratory ID:

Constituents_{)Dg/lcg.tlw)

Hexavalent Chromium (USEPA 7196A) Antimony (USEPA 6010/CLP) Nickel (USEPA 6010/CLP)

Total Cyanide (USEPA 9010/CLP) Amenable Cyanide (USEPA 9010)

Percent Solids

Remedi tion „ Level-

.;:.1;100-'..

III ii

.......JO.'i

• • I M '

j'Ji

Sludge-Drying Bed 0

Afffl Walls SB-ONE 8/23/00

05788C-1 200285-7 9A08G504-00

Leve/2

0.99 <2.4

170

62.1 25.8

85

CLP

0.82 0,70BJU

196

15 2.0U

84

Sludge-Drying Bed 1

South Wall SB-IS 8/23/00

05788C-3 200285-3 9A08G504:-002

Leve/2

0.96 <2.6 120

3.73 <1.3

78

CLP

0.70 0.51BJrU

145

2.3 I.IU

76

Sludge-Drying Bed 2


05660A-2 200263-5 9A08G504-004

Leve/2

0.60 <2.1

81

0.50 <0.62

81

CLP

0.55 0.38UJ"

85.9

16 1.2U

80

mglkg.dw Millignms per kilogram on a dry weight basis. <0r U r-nnctitiifflf wiw nnt •hnvii tiwipimilitllfiflTi Ifmil

B Cpnstitnent concentration detected is between the MDL and PQL and is qualified as estimated. I Constituent concentration is qualified as estimated because the laboratory duplicate sample criteria were not meL


05660A-1 200263-4 9A08G504-003

Leve/2

0.54 <2.3 280

28.8 <0.62

80

CLP

0.68 2.7BJU

319

10 6.3 9U

80

Page 1 of4

g;\env\ifdch™\iic202.220\Completion Reporf\Table3-4'\2/20/02

ARCADIS -

Table3.4. Comparison ofPostexcavation Level IT and CLP/CLP Equivalent Confirmation Analytical Results, Soil/Sludge Remediation, JFD Electronics/Channel Master Site, Oxford, North Carolina.

Page2of4

Sample Location: SIudge-Diying Bed 3

Sample Description: SampleiD:

Date Sampled: Laboratory ID:


05660A-3

Sludge-E)tyihg Bed 4

West Wall SB^W 8/17/00

05660A-4

Sludge-Drying Bed 5

North Wall SB-SN 8/23/00

05788C-4 200263-10 9A08G504-005 200263-13 9A08G504-006 200290-1 9A09G530-001

Sludge-Drying Bed 6


05788C-5 200290-^ 9A09G530-002

Constituents (mglkg.dw)

Hexavalent Chromium (USEP A 7196 A) Antimony (USEPA 6010/CLP) Nickel (USEPA 6010/CLP)

Total Cyanide (USEPA 9010/CLP) Amenable Cyanide (USEPA 9010)

Percent Solids

R,eQiedill cin : Level- -

V. "M",--'-.':-

if>-. ' - *•«" Level! CLP Level! CLP Level! CLP Level! CLP

0.68 0.43B 0.77 0.50 0.58 0.64 0.53 0.42B <2.4 0.40UJU <2.0 0.35BJU <2.4 0.39UJ" <2.1 0.35UJ'

29 33.8 79 99.9 60 47.1 44 45.6

<0.49 0.56U <0.26 0.51U 1J7 0.92 3.40 3.0 <0.60 0.56U <0.59 0.51U <0.53 0.46U 0.69 2.6U

84 83 85 85 85 85 85 85

mglkg.dw Milligrams per kilogram on a (fay weight basis. coiU Constitnentwas not detected above the quantitation limit

_Constituent concentration detected is between die MDL and PQL and is cpialified as estimated. Constituent concentration Is qjualiited as estimated because tfaelabaratolj'dnplicatesampleciiteiiawerenotmeL

g;\env\ifdcbann\nc202220\CompletionRepoittrable3-t\2120/02

ARCADIS

Table 3.4. Comparison ofPostexcavation Level 11 and CLP/CLP Equivalent Confinnation Analytical Results, Soil/Sludge Remediation, JFD Blectronics/Channel Master Site, Oxford, North Carolina.

PageS of4

Sample Location:

Sample Description. SampleiD:

Date Sampled: LaboratocylD

Sludge-Dl)'ingBed7

North WaU SB-7N 8/23/00

05788C-6 200290-12 9A09G530-003

Sludge-DcyingBed 8


05852B-1 200307-2 9A09G530-004

Sludge-DcyingBed 9


05852B-2 200307-8 9A09G530-005

Sludge-DcyingBed 10

North Wall SB-ION 8/25/00

05852B-3 200307-10 9A09G530-006

Constituents (ml! Ikl! .dw)


Total Cyanide (USEPA9010/CLP) Amenable Cyanide (USEPA 9010)

Percent Solids

Rmediation. , .:,LeveL

-v.*

Leve/2 CLP Leve/2 CLP

2.7 0.39B <0.47 0.47 <2.4 1.2BJ" <2.2 0.73BJ" 510 407 200 .186

17 13 14.5 9J <0.95 3.2 <0.52 0.57U

84 84 83 84

Leve/2

0.62 <2.4

66

0.83 <0.42

82

CLP Leve/2 CLP

0.48U 0.49 0.61 0.41UJ" <2.2 0.33UJ'

47.4 18 15.2

0.46U <0.36 0.50U 0.49U -<0J6 0.46U

80 90 90

mglkg.dw MiUigrams per kilogram on a (by weight basis. <orU Constitueitt was not detected above die quantitation limiL

B Constituent concentration detected is between the MDL and PQL and is qualified as estimated. i' Constitueiit concentration is qualified as estimated because the laboratoiy duplicate sample criteria were not meL

g:\cnv\jfachann\nc202.220\Completion ReportVTable 3^\2/20/02

ARCADiS

Table 3.4. Comparison ofPostcxcavation Level 11 and CLP/CLP Equivalent Confirmation Analytical Results, SoiVSludge Remediation, JFD Electronics/Channel Master Site, Oxford, North Carolina.

Page4of4

Sample Location

Sample Description . SampleiD

Date Sampled Laboratory ID:


Bottom SB-llB 8/25/00

05852B-5 200307-14 9A090530-008

Orid2

Bottom 02-Conf. 8/17/00

05641A-1 200248-1 9A080504-007

Orid9

Bottom 09-Conf. 8/23/00

05788C-2 200285-9 9A080504-008

Orid21

Bottom 021-Conf.

8/25/00 05852B-4

200007-13 9A090530-007

Constituents (mglkg.dw)


Total Cyanide (USEPA 9010/CLP) Ameh^le Cyanide (USEPA 9010)

Percent Solids

Remediation. •.•J;.:Levef/

11 Viv- "•

... .U( f •tr • I I

. I., i • L •• I

Leve/2

0.51 <2.6

53

0.39 <0.24

78

CLP

0.55 0.41U1''

32.7

0.78 0.6 lU

81

Leve/2

<0.45 <2.1

15

<0.40 <0.54

CLP

0.44U 0J4U1"

12.6

0.49U 0.49U

88

Leve/2

<0.52 <2.4

120

11.5 1.82

76

CLP

0.51U 0.42BJ"

58.4

0.59U 0.59U

77

Leve/2

<0.57 <2.6 530

17.8 <12

69

CLP

1.7 2.6BJI/

417

15 3.0U

70

mg'kg.dw <orU

MUligrams per kilogram on a dsy weight basis. Constituent was not detected above the quantitation limiL

Constituent concentration detected is between theMDLandPQLandis qualified as estimated. Constituent concentration is qualified as estimated because the laboratosy duplicate sample criteria were not meL

g;\env\jiachann\ne202.220\Completion Report\Table 3-4\2/20/02

Appendix B State Concurrence Letter

North Carolina Department of Environment and Natural Resources

Pat McCroiy Donald R. van der Vaai Governor Secretary

August 31,201S

Ms. Beverly Stepter Remedial Progect Manager Superfund Remedial & Site Evaluation Branch U. S. Euvinmmental Protcctioii Agency, Region 4 Sam Nuim - Atlanta Federal Center 61 Forayth Street, S.W. Atlanta, OA 30303

R£: State Concuirence with tfaeReooid of Decision Amendment JFD Electronics/Channel Master NFL She Oxford, Oranviilc County, North Carolina NCD 122 263 825

Dear Ms. Stepter

The State of North CarolinB has reviewed the attached Record Dedsipn Amendment at the JFD Electronics/Channel Master National Priorities List Site (''Site'*)- The State of North Carolina concurs with foe Record cf Decision AmendmaiU subject to foe foUowing conditions;

1. State concurrence on foe Record of Decision Amendment C'AROD") and the selected remedy for foe Site is based solely on foe informatitHi contained in the subject AROD. Should the State receive new or additional information that significantly affects the condusuna or remedy selection contained in foe AROD, it may modify or withdraw this concurrence with wrhtmi notice to ̂ United States Ertviromnental Protection Agency (US EPA) Region IV.

2. State concurrence on this AROD in no way binds the State to concur in hiture decisions or commits foe State to participate, financially or odieiwise, in the clearuip of the Site. The State reserves foe right to review, overview, comment; and make independent assessmrat of all future work relating to this Site.

3. If, aRet ranediation is complete, the total residual risk level exceeds 10"^, the State may require deed lecordation/restriction to document the presence of residual oontaminatioii and possibiy limit foture use of the property as specified in North Carolina General Statute (NCOS) 130A-310.8.

1646 kteU Senrice Center, Raleigh, North CBroltna 27689-1646 Phone: 819-767-8200 \ Internet: wwwnodenr.gov

AiEtmawrtrivrraniihaAAn Bi*k«v-n%RivM110 »MCimirwPvtr

The State of North Carolina appreciates the opportunity to comment on the Record of Decision Amendment for tiie JFD Elcctronics/Channel Master National Priorities List Site and looks forward to working with the US EPA on the final remedy. If you have any questions or comments, please feel free to contact David Mattison at (919) 707-8336 or at david •[email protected].

Sincerely,

Jim Bateson Chief, Superfund Section NC DENR Division of Waste Management

Attachment