Third Five-Year Review Report Jadco-Hughes Site Belmont ...Third Five-Ycar Review Jadco-Hughes...

$: Third Five-Year Review Report Jadco-Hughes Site Belmont ...Third Five-Ycar Review Jadco-Hughes Be/mnnt. Cas/(in COUllf\'. NC Table of Contents List of Acronyms vi Executive Summary$
NORTH CAROLI A

DEPARTMENT OF ENVIRONME T D NATURAL RESOURCES

DIVISIO, OF WASTE MANAGEMENT

Third Five-Year Review Report Jadco-Hughes Site

Belmont, Gaston County, North Carolina US EPA ill: NCD 980729602

Prepared for US EPA Region 4 September 2011

111111111111 1111111111111111111 111111111111111111 10839465

TIDRD FIVE-YEAR REVIEW REPORT JADCO-HUGHES SITE

US EPA ID: NCD 980729602

Prepared for the US Environmental Protection Agency

Region 4

Prepared by the State ofNorth Carolina

Department of Environment & Natural Resources

September 2011

THIRD FIVE-YEAR REVIEW REPORT JADCO-HUGHES SITE

US EPA ill: NeD 980729602

Prepared for the US EPA Region 4

Prepared by the North Carolina Department of Environment & Natural Resources

'14:anJdin E. 1, irector Superfund Division US EPA Region 4

Third Five-Ycar Review Jadco-Hughes

Be/mnnt. Cas/(in COUllf\'. NC

Table of Contents

List of Acronyms vi Executive Summary viii Five-Year Review Summary Form xi 1.0 Introduction 1 2.0 Site Chronology 2 3.0 Background 4

3.1 Site Description 4 3.2 . Site Topography, Geology, and Hydrogeology 4 3.3 Land and Resource Use 5 3.4 History of Contamination 7 3.5 Initial Response ,' 7 3.6 Basis for Taking Action : 8

4.0 Remedial Actions 8 4.1 Remedy Selection 9

4.1.1 1990 Record of Decision 9 4.1.2 1994 Explanation of Significant Difference...... 12

4.2 Remedy Implementati·on 12 4.3 System Operation/Operation & Maintenance 14

5.0 Progress Since Last Five-Year Review 15 6.0 Five-Year Review Process 17

6.1 Administrative Components 17 6.2 Community Involvement. 17 6.3 Document Review 17

6.3.1 ARAR Review 17 6.3. L.I Original ARARs from the 1990 ROD 18 6.3.1.2 Current Applicable ARARs 18

6.4 Data Review 21 6.5 Site Inspection 3 L 6.6 Interviews 32

7.0 Technical Assessment... 32 7. L Question A: Is the remedy functioning as intended by the decision documents? 32 7.2 Question B: Are the exposure assumptions, toxicity data, clean-up levels and remedial

action objectives (RAOs) used at the time of the remedy still valid? 33 7.3 Question C: Has any other information come to light that couLd call into question

the protectiveness of the remedy? 33 7.4 Technical Assessment Summary 34

8.0 Issues · 34 9.0 Recommendations and Follow-up Actions 35 10.0 Protectiveness Statement...... 36 I 1.0 Next Review ~ 36

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Third Five-Year Review Jadeo-Hughes

Belmollt. Gaston County. NC

Tables Table 1 Table 2 Table 3 Table 4 Table 5

Table 6 Table 7 Table 8 Table 9 Table 10 Table I I Table 12 Table 13 Table 14

Figures Figure I Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure I I Figure 12 Figure 13 Figure 14

.Attachments Attachment 1: Attachment 2: Attachment 3: Attachment 4: Attachment 5: Attachment 6:

Chronology of Site Event , 3 Groundwater Remediation Goals as Specified in the 1990 ROD 10 Soil Remediation Goals as Specified in the 1990 ROD 11 Recommendations and Follow-Up Actions from the 2005 Five-Year Review 15 Explanation and Discussion of Recommendation and Issues from Previous Five- Year Review 16 Comparison of 1990 Groundwater Remediation Goals to Current ARARs 20 Summary of Groundwater Contaminants Detected below the SVE Gravel Trenches 22 Summary of Groundwater Data from the Evaluation Report .. : 23 Summary of MW5DDR 27 Summary ofMWI2D '" 28 Summary of Contaminants Detected during Deep MW Installation 29 Summary of SS 14 30 Institutional Controls Evaluation Summary 33 Recommendations and Follow-Up Actions 35

Site Location Map Shallow Groundwater Flow Pattems- April 1993 Deep Groundwater Flow Pattems- April 1993 Shallow Groundwater Flow Pattems- January 2008 Deep Groundwater Flow Pattems- January 2008 Parcel Map of Residential Well Survey O&M Schedule Groundwater Monitoring Network MIP Boring Locations Groundwater Analytical Results Proposed Piezometer/MW Locations Total VOCs in Shallow Wells -2010 Total VOCs in Intennediate Wells -2010 Total VOCs in Deep Wells -2010

List of Documents Reviewed Site Inspection Checklist Photographs Complete Interviews Summary of Historical Groundwater Data Declaration of Perpetual Land Use Restriction

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AOC

ARAR

BGS

BNA

CERCLA

CERCUS

CFR

COC

CRA

CRQL

EPA

ESD

FS

GWES

GWTS

HOPE

IC

JHSC

LSEBP

MCL

MW

NC2L

NCAC

Third Fi\'e-Year Re\'iew Jadea-Hughes

Be/mOnl. Gaston County. NC

List of Acronyms

Administrative Order on Consent

Applicable or Relevant and Appropriate Requirement

Below Ground Surface

Base Neutrals and Acids

Comprehensive Environmental Response, Compensation, and Liability Act

Comprehensive Environmental Response, Compensation, and Liability

Infonnation System

Code of Federal Regulations

Contaminant of Concem

Conestoga-Rovers and Associates

Contract Required Quantitation Limit

United States Environmental Agency

Explanation of Significant Difference

Feasibility Study

Groundwater Extraction System

Groundwater Treatment System

High Density Polyethylene

Institutional Controls

Jadco-Hughes Steering Committee

Large Scale Enhanced Bioremediation Pilot

Maximum Contaminant Level

Monitoring Well

North Carolina Classifications and Water Quality Standards, Subchapter

2LNorth Carolina Administrative Code

vi

NC DENR

NCP

NPL

O&M

PCB

PCE

PCOR

PRP

POTW

RA

RAO

RD

RG

Rl

ROD

RPM

SI

SVE

TBC

TCE

UAO

Ilg/L

VOC

Third Five-Year Review Jadco-HlIghes

Belmont, Gastoll COllnty, Ne

North Carolina Department of Environment and Natural Resources

National Contingency Plan

National Priorities List

Operation and Maintenance

Polychlorinated Biphenyls

TetrachIoroethene

Preliminary Close-Out Report

Potentially Responsible Party

Publicly Owned Treatment Works

Remedial Action

Remedial Action Objective

Remedial Design.

Remediation Goal

Remedial Investigation

Record of Decision

Remedial Project Manager

Site Investigation

Soil Vapor Extraction

To Be Considered

Trichloroethene

UnilateralAdministrative Order

Microgram per Liter

Volatile Organic Compound

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Third Five-Year Review Ja,ko-HI/ghes

Belmoll!. Gas!oll COl/II!)'. NC

Executive Summary

The Jadco-Hughes Site operated as a solvent reclamation and waste storage facility, which had two operators: CA. Hughes, Inc. (1971 to 1975); and Jadco, Inc. (1975). The Site is located in Belmont, Gaston County, North Carolina. From 1971 to 1975, the Jadco-Hughes property was used for reclaiming used waste paint and ink-type solvents. Spills occurred in the course of these operations causing contamination of soils, sediments, and groundwater. Contaminants in the groundwater have primarily consisted of volatile organic compounds (VOCs), extractable organic compounds, and metals. The facility also stored drummed material consisting of waste chemicals and sludge from area industries. In 1975 when Jadco, Inc. leased the facility, an accumulation of 8,000 to 10,000 drums was present at the Site.

The State of North Carolina ordered the Site to be closed and cleaned up in 1975 after numerous complaints by neighboring residents and the documentation of frequent spills during the Site's operation. The State-ordered cleanup reportedly included the excavation of two inground pits into which solvents were placed. Also, on-site contaminated surface soil was consolidated and covered in an on-site landfill located in the southwest quadrant of the Site. All remaining large storage tanks, mobile tanker, and numerous residual drums were removed in 1983. Also in 1983, the United Stated Environmental Protection Agency (EPA) initiated a Site Investigation (SI). The investigation analyzed surface water, sediment, soil, and groundwater samples. According to the 1986 Remedial Investigation/Feasibility Study (RI/FS) report, the drums were stacked at several locations on the property and were in various stages of deterioration. The drums contained ink, solvents, lubricants, petroleum products, and other unknown chemicals. Based on the results of this investigative effort, the Site was proposed for the National Priorities List (NPL) on October 15, 1984, and was finalized for inclusion on the NPL on June la, 1986.

The remedies set forth in the September 27, 1990 Record of Decision (ROD) provide for remediation of contaminated groundwater and contaminated soil. In summary, the major components of the 1990 ROD included the following:

• The soils with residual contamination were to be consolidated and capped, then remediated using soil vacuum extraction (SVE), followed by soil flushing. Extraction and treatment via aeration, carbon adsorption was to be utilized to treat the groundwater and the treated groundwater discharged to a Publicly Owned Treatment Works (POTW) owned by the City of Mount Holly;

• The onsite culvert was to be repaired and lined. The natural spring located to the south of the Site to be diverted to the culvert to prevent contamination of the spring water via overland flow;

• The PRP was to monitor groundwater at wells on the property and of monitoring wells adjacent to the property;

• The PRP was to sample sediment at locations around the site; groundwater where groundwater discharges to a culvert; and surface water in areas adjacent to the site; and

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Third Five-Year Review Jadco-Hughes

Be/mont. Gaston CoullIy. NC

• Institutional controls were also prescribed for the Site to restrict access to those PQrtions of the aquifer that remain above health-based goals, and preclude any other activities or actions that might interfere with the implemented remedy.

In September 1994, the EPA issued an Explanation of Significant Differences (ESD), which required that the soil leachate would be sampled after completion of the soil remediation. When the sampling results of the soil leachate meet the groundwater remediation goals, the soil will no longer be considered a source of unacceptable risk to human h.ealth and the enviromnent.

Construction of the Remedial Action (RA) components commenced on January 8, 1996 and ended with temporary demobilization on August 7, 1996. A summary of the activities completed at the Site:

• Groundwater Extraction System (GWES); Groundwater Treatment System (GWTS);

• Soil Vapor Extraction System (SVE); • Soil Flushing System; • Culvert Slip lining; and, • Miscellaneous Site Work.

On August 7,1996, the US EPA and the North Carolina Department of Environment and N~tural Resources (NC DENR) conducted the final RA Inspection. In September 1996, the RA components were approved and satisfactorily completed. The EPA again inspected the system on February 17, 1997. The Site began remedial operations on April 29, 1997.

The clean-up levels issued in the ROD at the time of the remedy do not meet the more stringent groundwater standards of the current North Carolina Classification and Water Quality Standards, Subchapter 2L North Carolina Administrative Code (NC 2L) and/or the Maximum Contaminant Levels (MCLs) for several compounds. Although the remediation goals do not reflect the new standards, there are no known current exposure routes to contaminated soil qr groundwater that would cause the Site to not be protective in the short tenn. Furthennore, the Potentially Responsible Parties (PRPs) have implemented Institutional Controls (ICs) and obtained fully implemented permanent land use restrictions.

The originally designed groundwater collection, extraction, and treatment system addressed the shallow impacted groundwater and, to a lesser extent, the intennediate depth impacted groundwater. However, recent groundwater monitoring data shows intemiediate groundwater impacts may exist in areas outside the primary capture area of the existing containment system. VOCs have been detected in groundwater samples collected from intennediate monitoring wells located downgradient of the perimeter collection system. VOCs have also been detected in groundwater samples collected from deeper portions of the saprolite. To address the contaminant migration, two of the four new deep monitoring wells that were installed during the October 2010 deep groundwater impact investigation were converted into

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Third Five-Year Re\'iell' Jadco-Hughes

Belmont. Galton Co 1111 ty. NC

extraction wells in April 2011. Early asseSSlnent indicates that the new extraction wells will prevent further contaminant migration in the deep levels of the saprolite; however, additional evaluation if required. The contamination that is presently down gradient of the collection system is upgradient of the nearest receptor by approximately 600 feet. In addition, a sentry monitoring well 500 feet upgradient of the nearest receptor has not detected contaminant migration.

The remedy at the Jadco-Hughes Site is currently protective of human health and the environment In the short-tenn because 1) source soil contamination was remediated through removals and treatment of soils through soil vapor extraction followed by soil flushing; 2) groundwater is currently being remediated by extraction and treatment. JHSC has been actively investigating the groundwater plume and has modified the groundwater extraction system to address the groundwater contaminant containment issue. Currently no human exposure pathways exist to contaminated soil or groundwater. Institutional Controls (ICs) have been implemented at the Site and a Declaration of Perpetual Land Use Restrictions has been signed. In order for the remedy to be protective in the long-teml, the following actions need to be taken to ensure long-tenn protectiveness: confinn that the modification to the groundwater treatment system is adequately preventing additional contaminant migration and develop a plan to address the recently-identified groundwater contamination that is down gradient of the collection system.

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Third Five-Year Review . Jadeo-Hughes

Belman!. Caston COllnty. NC

Site name (from WasteLAN): Jadco-Hughes Site

US EPA ID (from WasteLAN): NCD980729602

Region: 4 City/County: Belmont, Gaston County

NPL status: [RJ Final 0 Deleted 0 Other (specify)

Remediation status (choose all that apply): 0 Under Construction [RJ Operating

o Complete

Multiple OUs?* 0 YES [RJ NO Construction completion date: 12/30/ 1996

Has site been put into reuse? 0 YES [RJ NO

REVIEW STATUS

Lead agency: [RJ US EPA 0 State 0 Tribe 0 Other

Authors name: Doug Rumford / Stephanie Grubbs

Authors title:

Hydrogeologist/Hydrogeologist Authors affiliation: NC DENR

Review period: 12 / I /20 I0 to 5 /25 /20 II

Dates of site inspection: March 17,20 II

Type of review: Policy

Review number: 0 I (first) 0 2 (second) [RJ 3 (third) 0 Other

Triggering Action:

o AChIal RA Onsite Construction at au #__ DAchIal RA Start

o Construction Completion

o Other ~

[RJ Previous Five-Year Review Report

Triggering action date (from WasteLAN): 9/27 /2001

Due date (fil'e years after triggerillg actioll date): 9/27 / 20 II

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Belmonl, Gasloll Coullly, NC

Five- Year Review Summary Form (continued)

There following issues that have been identified during this review.

1. The NC 2L groundwater standards were revised in January 2010 and the Federal MCLs in May 2009. This resulted in more stringent standards for thirteen contaminants of concern than the remediation goals (RGs) that were set in the 1990 ROD.

2. Additional evaluation of the new extraction wells is required to assure they will prevent additional contamination migration.

3. Landfill soil leachate samples were omitted from sampling rounds in 2009 and 2010. 4. Groundwater contamination has migrated offsite in the northeast comer of the Site. 5. The Annual Reports submitted by the JHSC do not provide trend analysis, plume

contaminant maps, isoconcentration maps, volume of groundwater treated and volume of contaminants removed.

Recommendations and Follovv-up Actions: . I. Determine if the changes to the NC 2L Standards and MCLs will require changes to the

remediation goals (RGs) that were set in the ROD. 2. Con finn that the modifications to the groundwater extraction system and treatment system

are adequately preventing additional contamination migration. 3. Soil leachate sampling from the landfill needs to be continued on a regular basis. 4. Develop a plan to address the groundwater contamination that is down gradient of the

collection system. 5. Annual reports submitted by the PRP shall include trend analysis, plume contaminant

maps, isoconcentration maps, volume of groundwater treated and volume of contaminants removed by the remediation system in the annual reports.

Protectiveness Statement: The remedy at the Jadco-Hughes Site is currently protective of human health and the

environment in the short-tenn because I) source soil contamination was remediated through removals and treatment of soils through soil vapor extraction and soil flushing, and 2) groundwater contamination is currently being remediated by extraction and treatment. Currently no human exposure pathways exist to contaminated soil or groundwater. Institutional Controls (ICs) have been fully implemented at the Site and a Declaration of Perpetual Land Use Restrictions has been signed. The groundwater contamination was originally believed to be primarily shallow, which the remediation system was designed to contain. However, in more recent monitoring periods, evidence of contamination in the intermediate and deep aquifers has been reported. The JHSC has been actively investigating the groundwater plume and has modified the groundwater extraction system to prevent additional contaminant migration. In order for the remedies to be protective in the long-tenn, the following actions need to be taken: confinn that the modification to the groundwater treatment system is adequately preventing additional contaminant migration and develop a

Ian to address the aroundwater contaminant that is down gradient of the collection s stem.

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Be/mom. Gaston Co Ull ty. NC

I 1.0 Introduction

The purpose of conducting a Five-Year Review is to detennine whether the remedy implemented at a Site is protective of human health and the environment. The methods, findings, and conclusions of this review are documented in this Five-Year Review report. In addition, Five-Year Review reports identify issues found during the review, if any, and identify recommendations to address them.

The North Carolina Department of Environment and Natural Resources (NC DENR), Division of Waste Management, Superfund Section, on behalf of the United States Environmental Protection Agency (EPA), Region 4, has conducted a Five-Year Review of the remedial actions implemented at the Jadco-Hughes Site (Site) (EPA ID# NCD980729602). The Site is located in Belmont, Gaston County, North Carolina. The review was conducted from December 20 I 0 through May 20 II, and the results of the review are documented in this report. The review was conducted in accordance with the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) §121 and the National Oil and Hazardous Substance Pollution Contingency Plan (NCP). CERCLA §121 (c) states:

If the President selects a remedial action that results in any hazardous substances, pollutants. or contaminants rernaining at the site. the President shall review such remedial action no less ojten than each five years ajter the initiation ofsuch rernedial action to assure that hurnan health and the environment are being protected by the rernedial action being implemented. In addition, tfupon such revie'w it is 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 .vhich such review is required, the results ofall such reviews, and any actions taken as a result of such reviews.

The EPA interpreted this requirement further in the NCP; Title 40 Code of Federal Regulations (CFR) §300.430(t)(4)(ii) states:

(f a remedial action is 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 revieli' such action no less ofien than eve,)! five years after initiation ofthe selected remedial action.

Third FiFe-Year Review Jadco-Hughes

Be/mol1l. Gaston COlilltl'. NC

The methods, findings, conclusions, and significanUssues found during the review are documented in this Five-Year Review report. This Five-Year Review was perfonned in a manner consistent with the latest EPA Comprehensive Five-Year Review Guidance (EPA, 2001).

The Site consists of one operable unit. The remedial action provides remediation of contaminated groundwater and contaminated soil. As stated in the Record of Decision (ROD), contaminated soils were to be capped and remediated using soil vapor extraction (SVE), along with soil flushing. The groundwater was to be treated by aeration and vapor phase carbon adsorption. The ROD also called for the monitoring of the groundwater wells on and adjacent to the property, as well as sediment and surface water sampling. Implementation ofICs was also a part of the selected remedy.

The triggering action for this review is the signing date of the Second Five-Year Review Report, September 27,2006. As documented in CERCUS (Comprehensive Environmental Response, Compensation, and Liability Information System), this Five-Year Review for the Site is a policy review. A policy review is conducted when "upon completion of the remedial action, no hazardous substances, pollutants, or contaminants will remain on Site above levels that allow for unlimited use and unrestricted exposure, but requires more than five yearS to complete" (EPA Comprehensive Five-Year Review Guidance, June 2001, Section 1.2.2). In accordance with CERCLA §121 and the NCP, a policy review is initially triggered by the date that construction is completed at the Site. The date of construction complete is generally the date of the Preliminary Close-Out Report (PCOR).

The purpose of this Five-Year Review is to evaluate the remedy at the Site and to determine if the action remains protective of human health and the environment. More specifically, the purpose is:

• To continn that the remedies, as specified in the 1990 ROD, remain effective at protecting human health and the environment (i.e., the remedies are operating and functioning as designed), and;

o To evaluate whether the clean-up levels specified in the ROD remain protective of human health and the environment.

• To determine if any other infonnation has come to light that could call into question the protectiveness of the remedy.

The next Five-Year Review for the Jadco-Hughes Site is to be completed within five years from the EPA Region 4 Superfund Division Director's (or his designee) signature and approval of this Third Five-Year Review.

2.0 Site Chronology

Table I lists the site chronology for selected events for the Site.

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Be/mol/t. Gaj-tol/ Coul/ty. NC

TabIe 1..S·Ite Chrono ogy I

Event Date

Initial discovery of the Site October I, 1979

Preliminary Assessment and Site Inspection completed. June I, 1980

Expanded Site Inspection completed. May 23,1984

Site proposed to the National Priorities List (NPL). October IS, 1984

Final listing on NPL. June 10, 1986

Remedial Investigation and Feasibility Study (Rl/FS) completed. August IS, 1986

Potentially Responsible Party (PRP) RIfFS completed. September 27, 1990

ROD completed. September 27, 1990

Human Health and Ecological Risk Assessments completed. September 28, 1990

Unilateral Administrative Order (UAO) signed. June 19, 1991

Remedial Design Report completed. September 23, 1994

ESD Issued. September 1994

PCOR completed. December 30, 1996

Remedial Action Report completed. May 29,1997

First Five-Year Review completed. September 25; 2001

Reactive Material Pilot Study submitted. .November 12, 200 I

Jadco-Hughes Steering Committee (JHSC) request permission to May 28, 2003

dismantle SVE system.

NCDENR and EPA approval dismantle request June 1,2003

JHSC request permission from City of Mount Holly to remove carbon July 3, 2003 polisher from treatment system. City of Mount Holly approves request to remove carbon polisher and July 9 to August 4,2003 carbon polisher bypassed.

Removal of SVE complete. May 14,2004

Large Scale Enhanced Bioremedia~ion Pilot (LSEBP) study submitted. June 8, 2004

EPA and NCDENR approved LSEBP Study. August 4, 2004

Four drum skins and carcasses uncovered, and tive buried drums found. November 18, 2004

Drum Removal Complete. February 5, 2005

Second Fi ve-Year Review completed. September 27; 2006

Additional Groundwater Data Collection Work Plan. December 8, 2006

Pilot Study Progress Evaluation and Recommendation Letter. October 12, 2007

Fomler Landfill Data Collection and Evaluation Activities Work Plan. May 1,2008

Containment Analysis Report completed. June 2008

Residential Well Survey completed. June 5, 2008

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Third Five- rear Review Jadeo-Hughes

Belmonl, Gaslon COllnly, NC

Analytical Results - Fonner Landfill Data Collection and Evaluation Activities,

October 3, 2008

Analytical Results - Additional Data Collection Activities Summary LSEBPS,

November 28, 2008

Intennediate Groundwater Impacts Investigation Work Plan. May 17,2010

Work Plan for Modifying the Groundwater Extraction System submitted. July 8, 20 I0

Work Plan to Install Four Deep Monitoring Wells, October 3,20 I0

Intennediate Groundwater Impacts Investigation Data, November I, 20 I0

Evaluation of Enhanced Bioremediation Pilot Study (2005 -2009). I;>ecember I, 20 I0

Follow-Up Items from Five- Year Review Site visit on March 17,20 I0, April 15,2011

Summary of PW5 and PW6 Pumping Tests. July 18,2011

Declaration of Perpetual Land Use Restrictions signed by the landowners. July 20, 20 II

3.0 Background

3.1 Site Description

The Jadco-Hughes Site opera"ted as a solvent reclamation and waste storage facility, which had two operators: CA. Hughes, Inc. (1971 to 1975); and Jadco, Inc. (1975). Solvent reclamation and wastestorage operations at the Site were suspended and subsequently tenninatedlater in 1975. The Site is located in Belmont, Gaston County, North Carolina. The Site is approximately 6 acres in size and is located on Cason Street, which is a mixture of commercial and residential properties. Figure 1 is a site map of the Jadco-Hughes property,

3.2 Site Topography, Geology, and Hydrogeology

The Jadco-Hughes Superfund Site is located within the Charlotte Granite Belt of the Piedmont Plateau, which lies between the Coastal Plain and the Appalachian Mountains. The topography of the Piedmont Plateau is comprised of well-rounded hills and long ridges exhibiting a northeast-southwest trend. The fonnation of the hills and ridges are the result of differential erosion by stream action due to the lithological characteristics of the bedrock. In the Jadco-Hughes an~a, the Catawba River and its associated tributaries are responsible for the present-day topography.

In general, the Site is relatively flat, sloping gently to the north. The Site geology is predominantly weathered granite (saprolite) to a depth 01'95 feet below ground surface (bgs). The lenses of fluvial deposits of clay, silt, and sand are present in the saprolite at depths" of 10 to 20 feet bgs. The water table is present at a depth of approximately 5 to 19 feet bgs. The groundwater flow rate is approximately 8 to 14 feet per year. The groundwater flowed to the north and was strongly influenced by groundwater discharge into the on-site culvert and the tributaries to Fites Creek. The groundwater flow pattern has changed since implementation of the collection system. All groundwater that flows across the Site is intercepted by the collection

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Belmollt, Gastoll County. NC

systems. A spring is present near the south end of the Site. Figure 2 is a map of the prepumping Shallow Groundwater Flow Patterns from April 1993 and Figure 3 is a map of the prepumping Deep Groundwater Flow Patterns, April 1993. Figure 4 is a post-pumping Shallow Groundwater Flow Pattern map from January 2008 and Figure 5 is a post-pumping Deep Groundwater Flow Pattern map from January 2008. .

3.3 Land and Resource Use

From at least 1972 until operations ceased in 1975, activities at the Site included waste oil and solvent recovery and disposal. Since 1975, the facility has been inactive. The current land use for the surrounding area is residential and commercial. Although there have· been a number of zoning changes over theyears, it is anticipated that a mix ofland uses similar to that described will continue into the future. The Site itself is currently fenced and the treated soils and sediments are contained within the fenced area under a soil cap.

The groundwater aquifer underlying the Site is currently not used as an on site drinking water source. The groundwater aquifer is a water supply resource for offsite residents near the Site. A limited number of offsite residents have operating wells, which were installed prior to municipal water supply lines that were put in place by the City of Mount Holly. The dominant groundwater flow direction is to the north.

A door-to-door residential well survey of thirteen properties was conducted January 12 through 18; 2008. The PRP contractor, Conestoga-Rovers and Associates (CRA) updated the 1989 RI Survey information by identifying all parcels within a 1,000-foot radius of the Site. Based on the infonnation from the initial investigation, thirteen properties were visited door-todoor to verify infonnation and to detennine status of the water supply wells that were identified during the 1989 RI survey.

Below is a summary of the parcels a reported by CRA in the Residential Well Survey dated June 5, 2008. Figure 6 is a map of the properties and parcel numbers.

• Eight parcels (181747, 181752, 181755/54, 181760, 182511, 181750, 181751, and 181769) were identified during the 1989 RI Survey as having active water supply wells located on the property;

• Two parcels (181746 and 181748) were identified during the 1989 RI Survey as having inactive water supply wells located on the property; and

• Three parcels (181771, 181772, and 181767) were conducted to verify infonnation obtained from the City in 2007/2008.

CRA completed the door-to-door survey of the thirteen properties. The infonnation CRA obtained is summarized below. For the eight parcels that were identified during the 1989 RI Survey as having active water supply wells located on the property, CRA confinned the following:

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Be/moll/. Gas/on COIlIl/)'. NC

,. Parcel 181752 - The pump and electrical supply have been disconnected from the one well on the property and the well is not in use;

• Parcels 181755/54 and 181769 - The residences are supplied City water but the wells are being used for in"igation purposes. The owner ofthe 181769 stated that their well went dry during the summer of 2007;

• Parcels 181747 and 181760 - The properties are supplied City water and the property manager of parcel 181747 and the owner of the parcel 181760 were not aware of wells located on their properties;

'. Parcels 181750 and 181751 - The water supply wells are being used for domestic purposes; and

• Parcel 182511 - The property owner was not available for interview.

For the two parcels that were identified during the 1989 RI as having inactive water supply wells located on the property and for which the City did not have billing infonnation, CRA confirmed the following:

• Parcel 181746 - There are five residences located on this property and two of the five occupants verified that they were using City-supplied water; one resident stated all the properties were connected to City water; and

• Parcel 181748 - The residence is supplied City water and the owner had not used the well since being connected to City water; however, the owners stated that he may consider using the well for irrigation purposed if the drought continues;

For,three parcels where billing infonnation was not available from the City, CRA verified the following from a door-to-door survey:

• Parcels 181771 and 181772 - The same owners have owned these parcels since 1989. The parcel 181771 is a parking lot for the adjacent property 181772 and is connected to City water. The owner's residence is located across the street from the properties and the billing infonnation is sent to his residence; and

• Parcel 181767 - A garage is located on this parcel, which is owned by the adjacent property owner to the north (181766). No water is supplied to the garage. The owner confimled that the adjacent property to the north is supplied City water and no well exists on either property.

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Belman!. Gas/an County. NC

3.4 History of Contamination

From 1971 to 1975, the Jadco-Hughes property was used for reclaiming used waste paint, ink-type solvents, and other materials. In the course of these operations spills occurred, causing contamination of soils, sediments, and groundwater. Contaminants in the groundwate"r have primarily consisted of volatile organic compounds (VOCs), extractable organic compounds, and metals. The facility also stored drummed material consisting of waste chemicals and sludge from area industries. In 1975 when ladco, Inc. leased the facility, an accumulation of 8,000 to 10,000 drums was present at the Site. According to the 1986 RIlFS report, the drums were stacked at several locations on the property and were in various stages of deterioration. The drums contained ink, solvents, lubricants, petroleum products, and other unknown chemicals.

3.5 Initial Response

The State of North Carolina ordered the Site to be closed and cleaned up in 1975 after numerous complaints by neighboring residents and the documentation of frequent spills during its operation. The State-ordered cleanup reportedly included the excavation of two in-ground pits into which solvents were placed. Also, on-site contaminated surface soil wasconsolidated and covered in an on-site landfill located in the southwest quadrant of the Site. All remaining large storage tanks, mobile tanker, and numerous residual drums were removed in 1983. Also in 1983, the EPA initiated a Site Investigation (SI). The investigation analyzed surface water, . sediment, soil, and groundwater samples. Based on the results of this investigative effort, the Site was proposed for the NPL on October 15, 1984, and was finalized for inclusion on the NPL on June 10, 1986. The NPL is a list of priority releases for long-term evaluation and remedial response, and was promulgated pursuant to section 105 of the CERCLA. The NPL is found in the NCP (Appendix B of 40 CFR part 300). Later in 1986, an Administrative Order of Consent (AOC) was entered into between the EPA and a group of companies identified as potentially" responsible parties (PRPs) who fonned the JHSc.

A RIfFS and Superfund Risk Assessment were completed for the Site. The RIfFS identified the following: subsurface soil contaminated by VOCs, Base Neutrals and Acids (BNAs), and, to a lesser extent, metals; groundwater contaminated by VOCs and BNAs; surface soil contaminated by Polychlorinated Biphenyls (PCBs); and VOC contamination in the surface water in an adjacent tributary. During September through December 1990 the PRPs conducted a removal action, which included the excavation and disposal of PCB-contaminated surface soil from the southeast swale area. Approximately 900 cubic yards of soils were excavated and disposed of at the Chemical Waste Management Inc. landfill in Emelle, Alabama.

7

Third Five-Year Review Jadco-Hzlghes

Belmont. Gaston COllnty. Ne

3.6 Basis for Taking Action

A baseline risk assessment conducted during and reported in the RlfFS identified the major pathway for exp'osure to contaminants at the Site as contaminated groundwater. Exposure assumptions used in the risk assessment included exposure to soil, air, groundwater, and surface water. The assessment concluded there was a potential for exposure to the indicator chemicals above the acceptable levels for carcinogenic and non-carcinogenic risk by down-gradient groundwater users. The contaminated soils that remained on site were not considered a direct contact threat but were considered a continual source of contamination to groundwater. The remediation of on-site soils is for the protection of groundwater.

4.0 Remedial Actions

In accordance with CERCLA and the NCP, the overriding goals for any remedial action are the protection of human health and the environment and compliance with Applicable or .Relevant and Appropriate Requirements (ARARs). A number of remedial alternatives were considered for the Site, and final selection was made based on an evaluation of each altemative against nine evaluation criteria that are specified in Section 300.430(f)(5)(i) of the NCP. The nine criteria include:

I. Overall Protectiveness of Human Health and the Environment 2. COInpliance with ARARs 3. Long-Teml Effectiveness and Pemlanence 4. Reduction of Toxicity, Mobility or Volume of Contaminants through Treatment 5. Short-term Effectiveness 6. Impleli1entability 7. Cost 8. State Acceptance 9. Community Acceptance

The Assessment of the Site in the 1990 ROD, states, .. The goal ofthis Remedial Action is to restore groundvvater to its beneficial use. which is, at this Site, a potential drinking water source. Therefore, groundwater remediation will be pel/ormed until all contaminated water meets cleanup goals throughout the plume area(s). The groundwater cleanup goals are presented in Table 13 (In the ROD); Soil cleanup goals are identified in Table J4 (In the ROD). Both the groundwater and soil cleanup goals are developedfor the cleanup and overall protection o/the ground~vater. '.' The Remedial Action Objectives (RAOs) as stated in the 1990 ROD are listed below and divided into the following groups:

Source Control Response Objectives • Minimize the migration of contaminants from the property soils that could degrade

groundwater quality; .

8


Be/mollt. Gastoll COllllty. NC

• Reduce risks to human health by preventing direct contact with, and ingestion of, contaminants in the property soils, and by preventing potential ingestion of contaminated groundwater;

• Reduce risks to the environment by preventing direct contact with, and ingestion of, contaminants in the sediments; and

• Minimize the migration of contaminants (i.e., from property soils,) that could result in surface water concentrations in excess of Ambient Water Quality Criteria.

Management ofGroundwater Response Objectives • Eliminate or minimize the threat posed to human health and the envirorunent by

preventing exposure to groundwater contaminants; • Prevent further migration of groundwater contamination beyond its current extent; and • Restore contaminated groundwater to Federal and State ARARs, including drinking

water standards, and to a level that is protective of human health and the environment within a reasonable period of time.

4.1 Remedy Selection

4.1.1 1990 Record of Decision

The remedies set forth in the September 27, 1990 ROD provide for remediation of contaminated groundwater and contaminated soil. As stated in the 1990 ROD, the remedial action included, "Deed and access restrictions, soil venting with carbon adsorption ofthe oif gas, soi/flu~11ing, culvert replacement, sUllace water diversion, rnonitoring. grozmd1;vater extraction and treatment by aeration and vapor phase carbon adsorption on site. discharge to the City o/Belmont POTW or other locai POTW "(The Contingency Alternative) consists 0/ groundwater extraction and treatment by ozone pre-treatment for metals followed by ultraviolet oxidation for removal of VOCs. Effluent discharge would be to Tributmy B. Both the selected and contingency alternatives include institutional controls or other land use restrictions necessmy to prevent adverse e.Oects to the remedy. "

As stated in the 1990 ROD, "(The remedy) was developedfor treatment ofconstituents recovered by groundwater to levels suitable for discharge to a Publicly Owned Treatment Works (POTW). The proposed groundwater recovelY system will include installation ofrecovelY wells in areas ofknown high contaminallt levels. Further delineation ofthe plume will be necessmy to determine the exact location ofextraction wells. The installation ofbedrock wells may also be necessmy.

A subsw.face drainage tile trench will be used to collect contaminated groundwater. Groundwaterflows into the drain system and is collected in a sump where it is pumped into the groundwater treatment system. Recovered groundwater will be piped to an on-site treatment system. The actual treatment system will be based on the final discharge option.

9


Be/mom. Gas/oil County. NC

Soil treatment is the sarnefor both the selected remedy and the contingency alternative. Soil treatment is via a vacuurn extraction process followed by soilflushing. The vacuum extraction process is a technique for the removal and venting of VOCs and some semi-volatiles Fom the unsaturated zone. This technology would involve the installation ofextraction vents above the water table within the ....vaste soil similar to the conventional method oflandfill gas extraction. A vacuum system induces ai/flmv through the soil, stripping and volatilizing the VOCSF0111 the soil matrix into the air stream. Water in the air stream condenses. is separated

jl-om the air stream and is transferred to the groundwater system. The contaminated air stream would then/low through two activated carbon units arranged in a series. Clean water is then introduced into the contaminated soil zone moving with the natural groll11dwaterflow to be collected within the ground....vater collection system for treatment, thereby enhancing the soil cleanup by ajlushing rnechanism.

A securityfence is being installed under the interim action soil removal program and it being placed along the perirneter ofthe property boundary. This will restrict unauthorized access to the Site as well as to the treatment area ultimately minimizing the potential for direct human contact. "

Table 2 and Table 3 list the groundwater and soil remediation goals, respectively, as specified in the 1990 ROD.

0

0Table 2 Groundwater RernedOlafIOn Goa s as sipecl°fiIedOthm e 1990 ROD Contaminant

Acetone Benzene 2-Butanone Carbon Tetrachloride Chlorobenzene Chloroethane Chlorofom1 I,l-Dichloroethane 1,2-Dichloroethane I,I-Dichloroethylene I ,2-Dichloroethylene (total) I ,2-Dich loropropane

Ethyl benzene 2-Hexanone Methylene Chloride 4-Methyl-2-Pentanone Tetrach loroethylene Toluene I, I, I-Trichloroethane I, I ,2-Trichloroethane Trich Joroethylene

Vinyl Chloride

Remediation Goal Organic Compounds (!lgfL)

700 I

170 0.3 300 10

0.19 0.3

0.3 7

70 0.56 29

10 5

350 0.7

1,000 200

3 2.8

0.015

10


Belmolll. Gasloll COl/illy. NC

Xylene 400 Benzoic Acid 28,000 Bis(2-chloroethyl) ether 0.03 Bis(2-ethylhexyl)phthalate 4 I ,2-Dich lorobenzene 620 I ,3-Dich lorobenzene 620 1,4-Dichlorobenzene 1.8 Di-N-Butyphthalate 700 Phenol 4,200 1,2,4-Trichlorobenzene 9

Inorganic Compounds (!1gIL)

Aluminum 50 Antimony 3 Arsenic 50 Barium 1,000. Beryllium I Cadmium 5 Chromium 50 Iron 300 ·Lead 15 Manganese 150 Nickel 150 Vanadium 20 Zinc 5,000

T ble 3 S"I R la IOn oa s as .pecl"fiIed" th Contaminant

a "" 01 erned" f G S m e 1990 ROD Remediation Goal

mg/kg A

Arsenic

Barium

Cadmium

Carbon Tetrachloride

Chloroform Chromium A

I ,2-Dichlorobenzene A

Lead

Mercury

PCBs Selenium A SilverA

Vinyl Chlorides

48 360 6

3,689 15,865

140 1.5 1.3

0.15 10

4.6 0.6 14

As stated in the ROD, "The above identified soil cleanup goals are developed for the protection ofthe groundwater and are designed to ultimately eliminate allY leachabilityFom soil contamination that lVould exceed the established groundwater cleanup goal. A Based on the established background soil concentration as established by the RI. "

11


Be/mont. Gaslon COllllly. Ne

4.1.2 1994 Explanation of Significant Differences

In September 1994, the EPA signed an ESD, which required that the soil leachate would be sampled following completion of the soil remediation to detemline the soils protectiveness of groundwater. The EPA issued the ESD with respect to sampling the landfill soil leachate, in the form of the caphlred flushing water. The analytical data ofthe flushing water will be compared to the groundwater remediation goals contained in the ROD. When the sampling results of the soil leachate meet the groundwater remediation goals, the soil will no longer be considered a source of unacceptable risk to human health and the environment. The ESD states that the treatment components of the remedy remain unchanged. The soil remediation goals will not be required for the soil leachate verification method.

4.2 Remedy nmplementation

Following the issuance of the ROD, the JHSC was issued a Unilateral Administrative Order (UAO) under Section 106 of CERCLA on June 19, 1991. Accompanying the order was a Scope of Work for the RD/RA. CRA was retained to prepare the RD/RA Work Plans, perfonn the associated design activities and implement the RA. The PRPs advised the EPA by letter dated July 2, 1991 of their intent to comply with the order and undertake RA at the Site. CRA began the RD/RA process with a scoping meeting in August 1991 and completed the RD work plan, which was approved by the EPA in April 1993. The final RD report was finalized and approved on September 23, 1994.

Construction of the RA components commenced on January 8, 1996 and ended with demobilization on August 7, 1996. A summary of the activities completed at the Site:

Groundwater !Extraction System (GWlES) .. Construction of the GWES (installation of three new groundwater extraction

wells; installation of pumping equipment in four extraction wells and one collection sump; and, install associated piping from sump to the four extraction wells).

Groundwater Treatment System (GWTS) o Construction of the GWTS (construction of reinforced concrete foundation for

below-grade aeration basin; construction of the GWTS building; installation of the GWTS process equipment; installation of the discharge pipe to the sewer system; and, installation of the gravel access road from the Site entrance to the GWTS.)

Soil Vapor Extraction System (SVIE) o Construction of the SVE system (Excavation of vapor extraction and air inlet

trenches; illstallation of crushed rock in nine extraction trenches and backfilling; installation of air inlet and vapor extraction piping in trenches; installation of the SVE process equipment; installation of access road and fencing; and, installation

12


Be/mont, Gaston Coun/y, NC

of the SVE drain line to soil flushing collection system.)

Soil Flushing System • Development of a work area for installation of the system (clearing, grubbing etc). • Construction of the system (soil flushing collection trench downgradient ofthe

former landfill; installation of crushed stone and filter fabric in soil flushing collection trench; installation of nine stilling wells and mechanical shut-off valves at each SVE trench; installation of potable water line from the GWTS building to the stilling wells; installation of soil flushing collection sump and associated pumping equipment and piping; and, installation of four new shallow monitoring wells to evaluate the hydraulic effectiveness of the soil flushing collection trench.)

Culvert Sliplining • Cleaning and televising of the existing concrete culvert; preparing a level work

area; installing a 24-inch diameter HDPE slipline in he existing Site culvert; and restoration and reseeding of the work area. .

On February 21 and 22, 1996, soi Is were excavated from an area along the east side of the concrete pad of the former operations area. A volume of 500 cubic yards of soil was estimated for excavation from this area based on elevated vapor readings in air detected during the excavation of the test pits during the RI. Soils were excavated, transported to and stockpiled in the Fonner Landfill area. These stockpiled soils were covered with plastic sheeting until they were later distributed over the Fonner Landfill surface, prior to placement of the final cover soils. The thickness of the final soil cover, estimated to be 1.3 feet, was based on cut and fill balances of the soil that would be excavated during construction ofthe remedy and placed on the landfi II as a cover. As approved by the EPA, the soil cover was not intended to meetthe requirements of an engineered cap, such as that used for sanitary landfills.

On August 7, 1996, the EPA and the NC DENR conducted the final RA Site Inspection. The EPA again inspected the system on February 17, 1997. The Site was approved for operation on April 29, 1997.

The JHSC operated the SVE system until the end of 2000 and decommissioned the SVE system with the approval of the EPA in 2003. The concentrations of VOCs in the influent to the soil vapor treatment system had declined and were essentially non-detect. The JHSC proposed and the EPA approved the use of natural soil flushing in place of the active soil flushing system. This soil flushing collection system began in October 2001.

13


Be/mom, Gas{on CO/Ill!)', NC

4.3 System Operation/Operation and Maintenance

Operation and Maintenance (O&M)

Conestoga-Rovers & Associates submits the "Annual Summary Status Reports" and the "Progress and O&M Report of Semi-Annual and Quarterly Activities" on behalf of the PRPs in accordance with requirements of the RD/RA at the Site, dated June 19, 1991. A copy of the Maintenance Schedule is attached as Figure 7. The primary activities associated with O&M include:

• Inspections completed at the frequency specified in the O&M Plan (CRA, May 1997), which includes inspection of security, Site vegetation, all equipment, and clean out valves/drains etc.; and

• Quarterly sampling of monitoring wells (MW) MW5DDR and MWI2D for VOCs,

Figure 8 is a map showing all the monitoring well locations and sediment sample locations.

The most recent O&M infonnation available at the time of this Five-Year Review report is reported in the Annual Report- January to December 20 I0 and the Quarterly Progress ReportApril through September 20 II. Examples of some of the issues that affected the operation of the remedial systems are:

As reported in the September through December 20 I0 Quarterly Report, Section 2.0 Problems Resolved:

• The carbon polisher remains offline and the effluent has been monitored to verify that the discharge criteria are being met. The discharge criteria continued to be met;

• The Steering Committee continued to monitor the groundwater quality in groundwater samples collected from MWI2D and MW5DDR at an increased frequency.

As part of the five-year review process, CRA was contacted for infonnation regarding the O&M at the Site over the last five years. As written in the ROD, the estimated cost of remediation was $4,830,900. The Feasibility Study dated February 1990 stated that the present worth O&M costs would be $2,665,600 based on 30 years of operation and 30 years of groundwater monitoring. It was estimated that O&M costs at the Site from October 2006 through December 2010 were approximately $1.5 million dollars. There were no major complications regarding the system; however, some non-routine O&M related issues for the Site were cleaning out the discharge lines in February 2007 and December 2007 and repairing the retaining wall at the north outfall in February 2009. These items were outlined in the quarterly and annual reports.

14


Belmont, Gaston County. NC

5.0 Progress Since Last Five-Year Review

This is the Third Five-Year Review Report. The Protectiveness Statement for the second five-year review in 2006 expressed the protectiveness of the remedial actions and that the Site was protective of human health and the environment. The protectiveness statement, as written in the 2006 Second Five-Year Review, stated:

"The remedy isfunctioning as designed. The immediate threats have been addressed and the remed.v is protective in the short term. Long-term protectiveness is expected when groundwater cleanup goals noted in Table 13 ofthe ROD are achieved. The original estimated time to achieve the cleanup goals was 30 years from the implementation ofthe groundwater remed.y. Long-term Protectiveness: Long-term protectiveness ofthe remedial action will be verijledby obtaining additional groundwater samples to.lltl~v evaluate actual contaminant concentrations. Current monitoring data indicate that the remed.v-is functioning as required to achieve groundHJater cleanup goals fioted in Table 13 ofROD. .'.'

The following table (Table 4) is a copy of the Recommendations and Follow-Up Actions that were recommended during the Second Five-Year Review in 2006.

Table 4· Recommendations / Follow-Up Action from 2006 Five-Year Review Affects

Recommendationsl Party Oversight MilestoneIssues Protectiveness?

Follow-up Actions Responsible Agency Date (YIN)

Current Future

Institutional Control (IC) Agreement

Implement IC CRA EPA and State

9/2008 N y

The Large Scale Enhanced Bioremediation Pilot Study

Evaluate the Large Scale Enhanced Bioremediation Pilot Study for effecti veness

CRA EPA and State

9/2008 N N

Groundwater System Effectiveness

An extensive analysis of the groundwater system should be conducted,

EPA EPA and State

9/2008 N y

to assure containment, as well as overall . effectiveness of the contaminant removal being performed.

15


Belmont. Gas/on COllnty. NC

The following table (TableS) explains the response to the three issues identified in the previous five-year review report:

Table 5: Explanation and Discussion of Recommendations and Issues from Previous Five-Year Review

Recommendation

Status (Ongoing, Complete, Considered and Not Implemented, or Carried over to this

FYR)

Status Comment Completion Date (if

applicable)

Implement ICs Completed Completed July.20, 201 1

Evaluate the Large Scale Enhanced Bioremediation Pilot Study for effectiveness

Completed 'Bioremediation does not appear to be an effective overall site remedy.

December 20 10

An extensive analysis of the groundwater system should be conducted to assure containment, as well as overall effectiveness of the contaminant removal being performed.

Ongoing Groundwater system analysis needs to be performed.

Continued monitoring of the groundwater is a routine part of O&M and will no longer be an issue/recommendation for the Site. Containment Analysis Report submitted in June 2008.

On April 26, 2011, King & Spalding LLC sent a memorandum to the EPA regarding restrictive covenants on the property. In the memorandum it stated that the three representatives that own the Jadco-Hughes property were contacted and the need for restrictive covenants or easement restrictions was explained. On July 20, 2011, the property owners of Jadco-Hughes signed a Declaration of Perpetual Land Use Restrictions. See Attachment 6 for the signed copy of the Declaration of Perpetual Land Use Restrictions.

Since the last Five-Year Review dated September 2006, several reports and letters have been generated. Among these are included in the Containment Analysis Report (June 2008), Residential Well Survey (June 2008), Analytical Results-Fonner Landfill Data Collection and Evaluation Activities (October 2008), Analytical Results-Additional Data Collection Activities Large-Scale Enhanced Bioremediation Pilot Study (November 2008), Intermediate Groundwater Impacts Investigation Work Plan (May 2010), Intennediate Groundwater Impacts Investigation Data (November 2010), Evaluation of Enhanced Bioremediation Pilot Study-June 2005 to July 2009 (December 2010), and the Work Plan for Modifying the Groundwater Extraction System Deep Groundwater Containment (February 2011).

16

Third Five-Year RCl'iew ladeo-Hughes

Be/molll. Gasloll COllllly. NC

6.0 Five-Year Review Process

6.1 Administrative Components

The NC DENR Superfund Section performed the five-year review for the Jadco-Hughes Site. Doug Rumford (Hydrogeologist) and Stephanie Grubbs (Hydrogeologist) from NC DENR were responsible for gathering and reviewing data for this review and compiling all the information into the Five-Year Review Report for the EPA. Telephone and email discussionslinterviews with Michael Townsend, EPA Remedial Project Manager were conducted. Other activities conducted for this review include document review (see Attachment 1), completion of a Site Inspection Checklist (see Attachment 2), and the Five-Year Review Report preparation.

6.2 Community Involvement

Activities to involve the community in the third Five-Year Review were initiated with. a meeting in early May 2011 between the RPM and the Community Involvement Coordinator (CIC) for the Jadco-Hughes Superfund Site. An ad was placed in the Charlotte Observer newspaper on July 14,2011, announcing the initiation of this Five-Year Review, and upon completion of the Five Year Review, a second as will be placed in the same newspaper announcing its completion. After this report has been approved by the EPA, the community wi II be notified that a complete report will be available at the Belmont Town Library, III North Central Avenue, Belmont, NC 28012, and the EPA Region 4 office, Atlanta Federal Center, 61 Forsyth Street, SW, 11 th Floor, Atlanta, GA 30303.

6.3 Document Review

This Five-Year Review consisted ofa review of relevant documents including but not limited to the signed ROD (1990); ESD (1994); the First Five-Year Review Report (2001); Second Five-Year Review Report (2006); Quarterly and Annual Progress Reports from 2006 to 2011; and applicable groundwater clean-up standards and other ARARs, as listed in the ROD, which were also checked for updates. See Attachment 1 for a complete list of documents reviewed.

6.3.1 ARAR Review

Section 121 (d)(2)(A) of CERCLA specifies that Superfund remedial actions must meet any federal standards, requirements, criteria, or limitations that are detennined to be legally ARARs. Applicable or Relevant and Appropriate Requirements are those standards, criteria, or limitations promulgated under federal or state law that specifically address a hazardous substance, pollutant, contaminant, action, location, or other circumstance at a CERCLA site. ToBe-Considered criteria (TBCs) are non-promulgated advisories and guidance that are not legally

17

Third Five-Year Rel'iell' Jadco-Hlighes

Belmollt. Gastoll COlillty. NC

binding, but should be considered in detennining the necessary level of cleanup for protection of human health and he environment. While TBCs do not have the status of ARARs, they are specific numerical quantity restrictions on individually listed contaminants in specific media. Examples of chemical-specific ARARs include MCLs specified under the Safe Drinking Water Act (SOWA) as well as the ambient air quality criteria that are enumerated under the Clean Air Act (CAA). Because there are usually numerous contaminants of potential concem for any site, various numerical requirements can be identified as ARARs.

In perfonning the Five-Year Review for compliance with ARARs, only those ARARs that address the protectiveness of the remedy are reviewed. Because the remedy at the Site currently addresses only groundwater contamination, this Five-Year Review will discuss compliance with chemical-specific groundwater ARARs only.

6.3.1.1 Original ARAlRs from the n990 ROD

The 1990 ROD identified the following Federal and State chemical-specific ARARs:

Federal ARARs o 40 CFR Parts 261, 263, 264, 265, and 268 promulgated under the authority of

RCRA and RCRA as amended (42 USC Section 6901,6905,6912,6924,6925 et. seq.)

o Clean Water Act (CWA 33 USC Sections 1251-1376,40 CFR Parts 121,122, 125, and 131)

.. Occupational Safety and Health Administration (29 CFR 1910, Part 120) o Safe Drinking Water Act (40 USC Section 300; 40 CFR Part 141, 143) o Clean Air Act (40 CFR Part 50, Part 60, Subpart A and Subpart B, and Part 61,

USC 1857) <> Toxic Substance Control Act 40 CFR 761

Stale ARARs <> Regulations for the Management of Hazardous Waste promulgated under the

authority ofthe NC Waste Management Act (North Carolina Administrative Code (NCAC) Title 15A, Chapter 13A)

o NC Drinking Water and Groundwater Standards; Groundwater Classifications and Standards (NCAC Title 15A Chapter 2L)

o NC Drinking Water Act (NCDWA) (General Statutes Chapter 130A, NCAC 311-327)

6.3.1.2 Current Applicable ARAlRs

It is the EPA's policy that ARARs are generally "frozen" at the time of the ROD signature unless a "new or modified requirement calls into question the protectiveness of the selected remedy", 55 Fed. Reg. '8757 (March 8, 1990). The NC Classifications and Water

18

Third Five-Year Review Jadco-HlIghes

Be/mom, Gastoll COllllly, NC

Quality Standards Applicable to the Groundwater of North Carolina, North Carolina Administrative Code (NCAC) Title 15A Subchapter 2L (NC 2L) on which several of the Remedial Goals are based were last amended on January 1,2010. Some of the chemical-specific ARARs have changed for the contaminants of concern (COCs) since the Remediation Goals assigned in the ROD. Table 6 is a summary of previous and current ARARs for the groundwater COCs.

CERCLA requires that the remedy comply with any promulgated standard that is more stringent than any federal standard. The 1990 ROD adopted NC 2L Groundwater Water Quality Standards as the remedial cleanup levels for 28 of the 45 compounds. The organic compounds chlorobenzene, toluene, 1,2-dichlorobenzene, 1-3, dichlorobenzene, I A-dichlorobenzene and the inorganic compounds arsenic, barium, cadmium, chromium, nickel, and zinc currently have remediation goals that are less stringent than the NC 2L standards. Table 6 is a summary of all the current NC 2L Groundwater Standards, MCLs, and Contract Required Quantitaion Limits (CRQL) for all the compounds. All the COCs have remediation goals at or below the Federal M CLs for each compound with the exception of chlorobenzene, 1,"1,1, -trichloroethane, and arsemc.

The remedy is considered protective in the short term because the cleanup levels are still within the risk range and there is no current exposure. As'it is a "goal of the EPA's Superfund program to return Class I and Class II aquifers to their beneficial uses which include human consumption," if the new MCL is not met, the groundwater will not meet he remedial action objective of restoration to dinking water standards. To the extent the RGs are not reflective of current standards (as shown in Table 6), they should be amended to achieve long-term protectiveness of the remedy.

19

Third Fil'e-Year Rel'iew Jadea-HI/ghes

Be/mollt, Gastoll COl/lit)', NC

Table 6: Comparismlll of ]990 ROD Groundwater Remediation Goals to CUJIrrell1lt ARAJRs

COC

1993 IRO]) groundwater remediation

goal

Current Ne2L (As of

.:ITanuary 1,2010)

Current Federal CRQL

Current Federal MCLs

ARAR change?

Organic Compounds (~g/L)

Acetone 700 d 6,000 5 - Yes Benzene 10 I 0.5 5 No 2-Butanone 170 0 4,000 5 - Yes Carbon Tetrachloride CU 0 0.3 0.5 5 No Ch lorobenzene 300 0 50 0.5 100 Yes Chloroethane lOa 3,000 0.5 - Yes Chlorofonn 0.19 b 70 0.5 - Yes 1,1-Dichloroethane 0.3 b 6 0.5 - Yes 1,2-Dichloroethane 0.3 0 0.4 0.5 5 I,I-Dichloroethylene 7" 7 0.5 7 No 1,2-Dichloroethylene 70 e 70 0.5 70 No (total) 1,2-Dichloropropane 0.56 0 0.6 0.5 5 No Ethylbenzene 29 b 600 0.5 700 No 2-Hexanone 10" - 5 - No Methylene Chloride 5° 5 0.5 - No 4-Methyl-2-Pentanone 350 d - 5 - No Tetrachloroethylene 0.7 0 0.7 0.5 5 No Toluene 1,000° 600 0.5 1,000 Yes 1, 1,1-Trichloroethane 200 b 200 0.5 70 Yes I, 1,2-Trichloroethane 3 e - 0.5 5 No Trichloroethene 2.8 0 3 0.5 5 No Vinyl Chloride 0.015 b . 0.03 0.5 2 Yes Xylene 400 0 500 0.5 10,000 No Benzoic Acid 28,000 d 30,000 - - No Bis(2-chloroethyl) ether 0.03 0.03 - - No Bis(2 4 e 3 - - Yes ethylhexyl)phthalate 1,2-Dichlorobenzene 620° 20 0.5 - Yes 1,3-Dichlorobenzene 620 b 200 0.5 600 Yes IA-Dichlorobenzene 1.8 b 6 0.5 75 Yes Di-N-Butyphthalate 700 d 700 - - No Phenol 4,200 d 30 - - Yes 1,2,4-Trichlorobenzene g e 70 0.5 70 No

20

Third Fire-Year Review Jadco-Hughes

Belmollt. Gastoll COlillty, NC

Inorganic Compounds (!-,-glL)

Aluminum 50 f - - - No Antimony 3< - - 6 No Arsenic 50 b 10 - 10 Yes Barium 1,000b 700 - 2,000 Yes Beryllium 1< - - 4 No Cadmium 5 b 2 - 5 Yes Chromium SOb 10 - 100 Yes Iron 300 b 300 - - No Lead IS g IS - IS No Manganese 150b 50 - SOc Yes Nickel ISO b 100 - - Yes Vanadium 20 d - - - No Zinc 5,000 b 1,000 - - Yes Notes: a EPA CRQL - EPA CRQL for volatile compounds b NC 2L - North Carolina Administrative Code, Title 15A, Subchapter 2L, Classitications and Water Quality Standards Applicable to the Groundwater of North Carolina C Manganese is a secondary standard under the National Secondary Drinking Water Regulations d RFD - Reference Dose < PMCL - Proposed Maximum Contaminant Level f PSMCL - Proposed Secondary Maximum Contaminant Level g RCG - Recommended Cleanup Goal for Lead at Superfund Sites - No State or Federal standard (MCL and/or CRQL) exists for this compound BOLD font indicates a standard that is currently more stringent than the current RG

6.4 Data Review

Several investigations have been on-going since the last F ive-Year Review Report. Below is a summary of Site activities since the last review.

At the Site, "shallow groundwater" means groundwater at depths less than 20 feet below ground surface (ft bgs). "Intermediate groundwater" means groundwater at depths between 20 ft and 50 ft bgs. "Deep groundwater" means groundwater present at depths greater than 50 ft bgs.

Groundwater Data

Analvtical Results- Former Landfill Data Collection and Evaluation Activities - 2008

CRA collected groundwater samples from the fomler landfill area and in the vicinity of MW3S and MW3D at the Site. The samples were collected upgradient and surrounding the monitoring wells in June and July 2008. Carbon tetrachloride concentrations in the groundwater

21

Third Five- Year Revie\l' Jadeo-Hughes

Be/mom. Gaston Coullty. NC

samples collected from MW3S have fluctuated since the startup of the groundwater treatment system in 1996 with concentrations ranging from 2,300 to 77,000 !lg/L. CRA believed that the fluctuations were from ongoing impacts from a source material, such as a buried drum. Groundwater investigation was conducted to identify a potential source.

In June 2008, twenty-three boreholes were advanced and twenty-three groundwater samples collected within the limits of the. fomler landfill and MW3S/MW3D well. An additional four boreholes were advanced in the vicinity of MW3S/MW3D well nest to further delineate the elevated carbon tetrachloride concentrations. Eighteen samples were collected below the SVE and soil flushing gravel trenches and five groundwater samples were collected in the area between the northem limits of the landfill and MW3S/MW3D well nest. Groundwater samples were also collected from MW18S and MWl9S to evaluate hydraulic containment of the water injected for the soil flushing system.

Eighteen groundwater samples were collected from below the SVE gravel trenches installed in the landfill. As summarized in the Analytical Results-Fonner Lanc/fill Data Collection and Evaluation Activities Report, a summary of the concentrations detected at concentrations greater than the remediation goals was compiled. Table 7 below is a copy of the summary table from the report:

Table 7: Summary of Groundwater Contaminants Detected below the SVE Gravel Trenches

Detection Frequency Greater than

Remediation Goal

Concentration Range 6lg/L)

Remediation Goal (~lg/L)

1.2-Dichloroethane 11/18 4.3-980 0.38 1.4-Dichlorobenzene 10/18 2.0-160 1.4 2-Butanone 1/18 110,000 4,200 4-methvl-2-pentanone 2/18 3,000-38.000 350 Acetone 2/18 7,100-85.000 700 Benzene 10/18 1.9-140 1.0 Chlorobenzene 2/18 150 50 Cis-I.2-dichlorothene 3/18 86-180 70 Methvlene Chloride 6/18 5.4-110 4.6 Tetrachloroethene 9/18 1.0-2.4 0.7 Toluene 1/18 2,400 1,000 Trichloroethene 4/18 3.3-20 2.8 Vinvl Chloride 7/18 1.1-6.7 0.015

CRA compiled groundwater data from five groundwater samples collected from MW3S/MW3D, the four additional samples, and the samples from MWl8S and MW19S. As reported in the Analvtical Results-Former Land/llI Data Collection and Evaluation Activities . . Report, a summary of the concentrations detected in the groundwater at concentrations greater

22


Belmont. Gaston County, NC

than th~ remediation goals is provided below:

Table 8: Summary of Groundwater Data from Evaluation Re ort_.L..- --,

Detection Frequency Concentration Range Greater than (f-lg/L)

Remediation Goal 1,2-Dichloroethane 5/11 31-1,400 1,4-Dichlorobenzene 1/11 35 Acetone 1/11 1,700 Benzene 1/11 59 Carbon Tetrachloride 11111 12-14,000 Chloroform 10111 170-3,300 Cis-1,2- 1/11 150 Dichloroethene Methylene Chloride 9/11 19-870 Trichloroethene 3/11 13-48

Remediation Goal (f-lg/L)

0.38 1.4 700 1.0

0.269 70 70

4.6 2.8

As stated in the Ana~vtical Results-Former Landfill Data Collection and Evaluation Activities Report, "Carbon tetrachloride and its daughter products, chloroform and methylene chloride were both detected in the groundwater samples collected in the northwestern portion of the land/lll. in the vicinity ofMW3S. Carbon tetrachloride was not detected in the groundwater samples collected Vo,,'ithin the landflll area trenches. Based on the analytical data, CRA has narrowed the potential location ofthe carbon tetrachloride source to an area near the northwestern lin/it ofthe landfill.

Carbon tetrachloride was detected at a maximum concentration of14,000 pglL at the sample location at the northwestern limit ofthe landfill area. Based on the maximurn concentration ofcarbon tetrachloride in a the northwestern portion ofthe landfill. a source of carbon tetrachloride, such as a drum or a residual sewn ofcontamination, may be present near this location. "

Based on the recommendation of the Former Landfill Data Collection and Evaluation Activities Report, CRA excavated five test trenches north of the fonner landfill and in the northwestern portion of the landfill in order to locate the potential source of carbon tetrachloride in December 2008. CRA did not observe any visual, olfactory, or vapor evidence of impact in the test trenches; therefore no soil samples were collected. To date no additional source of carbon tetrachloride has been discovered.

23


Belmont, GasTOIl Counly, NC

Evaluation oOhe Enhanced Bioremediation Pilot Studv ~ 2010

CRA conducted a pilot study to detennine if ethyl lactate injections are effective in promoting enhanced reducing conditions and bioremediation of VOCs in the groundwater at the Site. The pilot study began in October 2004 with the submission of the work plan and the commencement of the study in June 2005. Groundwater monitoring at the Site from 2005 to 2006 did not indicate that the quarterly ethyl lactate injections were resulting in enhanced reducing conditions conducive ofbioremediation. Due to the slow rate of groundwater tlow and the distance between the monitoring wells and injection points, it was speculated that the injectant had not reached the monitoring wells. Therefore, in 2006, direct push sampling methods were used to sample 10 feet from the injection locations. The results indicated that the conditions were significantly reducing at the limited number of locations in the central portion of the Site. In 2007, a three-fold increase in the injectant along with a 250-gallon water flush was approved. In December 2008, the increased injectant and water flush was initiated.

In December 2008, CRA made additional changes to the injection program. Due to increasing VOC concentrations in some groundwater samples, CRA recommended that the ethyl lactate dosage in several injection wells increase, while decreasing the' dose in other wells depending on the specific conditions around the wells 'and the analytical groundwater results.

. The last sampling event of the Pilot Study was completed in July 2010. CRA collected groundwater samples from both the monitoring wells and the I-inch temporary monitoring wells for VOCs, SVOCs, dissolved iron and manganese, ethane, ethane, methane, chloride, and TOC analyses. (CRA also collected groundwater samples from the monitoring wells in December 2009 as part of the annual event, but the samples were analyzed for routine parameters only including VOCs and SVOCs.)

According to the Evaluation of the Enhanced Bioremediation Pilot Study -2010, "eRA examined the groundwater conditions in the area o.lthe injection .vells over time to determine if an increase in biological activity (i.e., biodegradation) had occurred in the irnpacted area as a result o.fthe Pilot Study injection program. "

CRA concluded that the ethyl lactate injections created a redox conditions conductive to bioremediation, but that low concentrations to contaminants prevented a reliable predication of trends; that reduction extended at least 20 feet down gradient of the injection wells in a zone at least 10 feet wide; and that complex variability in groundwater flow direction hampered this treatment methodology. Because of these conclusions, the PRPs discontinued the Pilot Study.

24

Third Five- Year Reviell' Jaclco-Hughes

Belmont, Gastoll County, Ne

Intermediate Groundwater Impacts Investigation- 2010

Based on the conclusions of the 2008 Containment Analysis Report, the perimeter collection system was effectively capturing shallow VOC-impacted groundwater from across the Site. The groundwater extraction system consists of four extraction wells in areas of observed elevated contaminant,concentrations. These wells pump groundwater from the intennediate portion (20-50 feet below ground surface) of the unconfined aquifer. Based on the VOC concentrations in the groundwater samples collected from the north end of the Site, the remedy appears to have been effective in containing impacted groundwater in the intended areas. The . groundwater capture zone is limited by low penneability of the saprolite, as was anticipated when the system was installed, but now the intennediate groundwater impacts appear to be more widespread than the extraction system was originally designed to remediate. In May 2010, the Intennediate Groundwater Impacts Investigation Work Plan was completed to address this issue. In November 20 I0, the Intemlediate Groundwater Impacts Investigation Data was submitted. The study was to designed to detennine the extent of carbon tetrachloride impacts in the intennediate groundwater in the central portion of the Site. Monitoring well location are shown in Figure 8.

CRA utilized a membrane interface probe (MIP) into the subsurface. MIP is a,highresolution, direct sensing, down-hole VOC sensing tool to detennine the extent of carbon tetrachloride impacts in the intennediate groundwater in the central portion of the Site. The sensor continuously logs VOCs that diffuse through a semi-penneable membrane. Using a carrier gas, the VOCs are brought to the surface through tubing, which is connected to a photoionization detector, an electron capture detector, and a flame ionization detector. CRA advanced four MIP borings along four transects located in the central portion of the Site. Figure 9 is a map of the MIP boring locations. As stated in the Intennediate Groundwater Inipacts Investigation Data Report, " The data collected during the MJP investigation did not identify source areas ofcarbon tetrachloride in the central portion ofthe Site: however, potential VOC contamination was identified in areas A2/A2-B and Cl2/Cl2-B.

The PRP Group is conducting additional investigatOly work with the installation olfour deep saprolite-monitoring .vells in the northern portion ofthe Site. No apparent carbon tetrachloride .vas spec{jical(v iden!{jied"

During the Intennediate Groundwater Impacts Investigation Data Investigation, CRA also collected ten groundwater samples from six locations. The samples above remediation,goals in I-lg/L are:

A2/B (8-12 feet bgs): cis-I,2-dichloroethene 72

Trichloroethene 2,400

25

Third Five-Year Re\'icw Jadco-Hzlghes

Be/mo/1/. Gastoll COlillty. NC

86/87 (26-30 feet bgs): Carbon Tetrachloride 12

B9 (22-26 feet bgs): Carbon Tetrachloride 23 Tetrachloroethene 4.8

CI2 (9.5-13.5 feet bgs): Cis-I,2-dichloroethene 51,000 o-xylene 6,200 Ethylbenzene 4,200 Tetrachloroethene 3,200 m & p xylenes 15,000 Toluene 27,000 Trichloro~thene 2,500 Vinyl Chloride 2, I00

CI2-B (24-28 feet bgs): 1,2-Dichlorobenzene 171 Trichloroethene 880 8enzene 131 Vinyl Chloride 36 cis-I,2-dichloroethene 2,100

018 (15-19 feet bgs): 1,2-Dichlorobenzene 47 Trichloroethene 4.9 Carbon Tetrachloride 12 Vinyl Chloride 4 Tetrachlorocthene 14

DI8 (27-31 feet bgs): 1,2-Dichlorobenzene 1.2 Tetrachloroethene 3.6

Quarterlv Progress Reports

CRAsubmits Quarterly Progress Reports in accordance with the requirements of Section XIV of the EPA VAG for the RD/RA at the Site. Quarterly sampling at the Site includes . monitoring wells MWI2D and MW5DDR. Tables 9 and 10 below are the summary tables of the sampling events from March 2007 through June 2011 for MW5DDR and MWI2D. The full analytical summary tables are presented in Appendix 3. See Figure 8 for a map showing monitoring well locations.

26


Be/mont, Gasto/l County, NC

Dales o./Qllarler(v Samp/ingfrom 2007102011

RG 3/

2007 6/

2007 9/

2007 /2/

2007 3/

2008 6/

2008 9/

2008 /2/

2008 3/

2009 6/

2009 9/

2009 /2/

2009 3/

20/0 6/

20/0 9/

20/0 /2/

2010 3/

2011 6/

2011

(I-lg/Lj

Chloroform

Cis-1,2dichlorothene

Chlorobenzene Carbon Disulfide

1,1-Dichloroethene

1,2-Dichloroethane

Methylene Chloride

Tetrachloroethene

Trichloroethene

0.19

70

300 NS

7

0.3

5

0.7

2.8

22/ 25

3.1/ 3.2 15/ 15

3.2

1.\

13

1.1

3.5

4.4/ 4.6

160

1.1/ 1.1

1.0/ 1.0

3.1/ 3.2

94/94

I.2

41

1.0

24

9.7

5.9

1.6/ 5.5

58/ 190

1.8

2.4

28/ 86

26/ 28

920/ 1,100

15/ 18

490/ 610

14/ 15

570/ 610

10

9.2/ 9.9

220/ 240

2.6/ 3

130/ 150

2.0/ 2.5 44/ 54

6.1/ 7.2

270/ 310

5.2/ 5.8 120/ 140

1.5

46

1.4

22

42

1400

24

720

38

1300

18

540

62/ 62

1,800 I

1,800

23/ 24

820/ 840

45

1800

24

840

1.8/ 2.4

76/ 110

1.0

43/ 44

11

1.8

3.8

Table 9: Groundwater Data Summary of MW5DDR

Bold indicates above Remediation Goals (RGs) NS - RG /lot specUied in ROD / - Duplicate sample in a sampling period. For example: 22/25

27


Be/mollt. Gastoll COl/II fl·. NC

Dates o.fQuarter~v Samplingjl-olJ1 2007 to 2011

RG 3/

2007 6/

2007 9/

2007 12/

2007 3/

2008 6/

2008 9/

2008 /2/

2008 J/

2009 6/

2009 9/

2009 12/

2009 J/

2010 6/

2010 9/

2010 /2/

2010 3/

2011 6/

2011

(~tg/L)

Chloroform

Cis-l.2dichlorothene

Carbon Tetrachloride

Methylene Chloride

Tetrachloroethene

Trichloroethene

,

0.19

70

5

0.7

2.8

8.4

8.1

19

16/ 17 13/ \3

1.2/ 1.2 37/ 37

8.7

7.2

23

8.3

5.7

23

,

11/ 11 12/ \2

1.7

1.1/ 1.2 30/ 31

10

12

1.0

29

6.3

8.6

21

4.9/5.2

7.6/ 8.2

22/ 23

6.8

15

34

12

30

1.9

1.5

54

5.1

\3

1.1

35

7.1

21

1.4

57

15/ 14 34/ 32

. 1.2/ 1.\

2.6/ 2.3 100/ 96

22

41

1.\

2.9

97

14

38

2.6

99

16

40

2.6

98

16

49

1.2

1.2

3.0

95

18

44

1.1

2.4

86

Table 10: Groundwater Data Summary of MW12D

Bold indicates above Remediation Goals (RGs) NS - RG not spec~fied in ROD / - Duplicate sample in a sampling period. For example: 22/25

28


Belmont, Gaston Co lin ty. NC

Work Plan for Modifying the Groundwater Extraction Svstem: Deep Groundwater Containment - FebruQ/Y 2011

CRA prepared this work plan for modifying the groundwater extraction system to contain deep groundwater impacts at the north end of the Site, to supplement the existing system that addresses the shal10w impacted groundwater and, to a lesser extent, the intennediate depth impacted groundwater.

The existing groundwater extraction system consists of four extraction wells (PW I through PW4) in areas of observed elevated contaminant concentrations, which pump groundwater from the intennediate portion (20 to 50 ft bgs) of the saprolite groundwater system. Based on VOC concentrations in groundwater samples collected from MW5D (located at the north end of the Site), the wells appear effective at removing contaminants from the intended areas, although the capture zone is limited by low penneability of the saprolite; however, monitoring data shows intennediate depth impacts outside the primary capture area, an indication of the failure to adequately contain contaminants.

In October 2010, four deep monitoring wel1s were instal1ed in the deep saproli.te focusing on the partially weathered rock (PWR) zone to further investigate the deep groundwater impacts at the Site. VOCs were detected in the groundwater samples from the newly instal1ed deep monitoring wells. Based on the analytical data, deep groundwater may be impacted at the north end of the Site. Figure II is a map showing the new well locations. Table 11 below is a summary of the contaminants detected in groundwater during the installation of the four deep monitoring wells.

Figures 12, 13, and 14 are total VOC isoconcentration maps for the Site generated by CRA, consistent with the updated Site Conceptual Model with maps generated for the shallow, intennediate, and deep groundwater.

.TabIll . ummary C Detected d urmle S ontammafIon Deep MW I nstaIIafIOn MW-27DD

MW-25DD MW-26DDMW-24DD /Duplicate

1,2-Dichloroethane

Contaminant RG

0.3 2 14 7.1 3/3 Carbon Tetrachloride 0.3 54 <1.0/<1.0 Chloroform

2.1 29 2700.19 2 59 <1.0/<1.0

Cis-l,2-dichloroethene 70 1.3 560 150 <1.0/<1.0 Methylene Chloride 2.9 <1.05 <1.0 <1.0/<1.0 Tetrachloroethene 0.7 1.1 84 <1.0/<1.0 Trichloroethene

39 2.8 1 350 130 <1.0/<1.0

29

Third Five-Year Review Jadco-Hl/ghes

Bellllolll. Gastoll COI/Ilty. NC

CRA installed the piezometers and monitoring wells in March 2011; the extraction wells were tested in March and April 2011; and the system modifications are expected to be completed in October 2011.

See Attachment 5 for historical groundwater analytical data summary tables.

Surface Water Data

As reported in the Quarterly Progress Reports, VOCs were detected in the surface water at stream sampling location SS 14 (located in Tributary B, near its confluence with Tributary A). There were no VOCs detected in surface water samples collected from locations SS 12, SS 15, and SS9. Location SS9 is upstream of SS 14. VOCs were detected in the sample collected from the location SS 14 in December 2008, December 2009 and December 2010; sampling in March 2009, June 2010, and March 2011 showed lower or not detectable levels of contaminants. By examining groundwater elevations in manholes and monitoring wells, CRA detennined that the probable source of surface water contamination is the discharge of groundwater to surface water in the area of SS 14. eRA proposed that increasing the pumping rate in MH5, which has already been implemented, should reverse the horizontal hydraulic gradient and preclude the discharge of groundwater to surface water, and thereby eliminate detections of VOCs in the tributary.

The data for the surface water sample location SS 14 are summarized below in Table 12. . March2011

CarbonTetrachlorideChloroform 1.5 ND 1.8 ND ND NDCis-l,2- 2.9 1 5.4 ND 2.9 NDdichlorotheneTetrachloroethene 1 2.9 ND 1.0UJ NDTrichloroethene ND 1.4 ND 1.6J ND

T able 12. 8ummary 0 f 8814 8 urface W ater Daat December March December June Decernber

2008 20102009 2009 2010 flg/L

2.8 ND ND 1.0UJ ND5.8

1.4 1.1

NO - Not detected at the reportmg Ilt1l1t of I. J - Estimated concentration . UJ - Estimated reporting limit

The surface water analytical data for the samples collected from location ,SS 15 on March 31, 2010 and from SS 14 on June 17, 2010 are presented in Appendix 4. With the exception of acetone, there were no VOCs detected in the surface water sample collected from location SS 15. Acetone was detected at a concentration of 13 J.!g/L. There were no VOCs detected in the surface water samples collected from location SS 14.

30

Third Five-Year Review Ja,ko-Hughes

Be/mOIl1, Gaslon COllllly, NC

6.5 Site Inspection

The Five-Year Review Site inspection of the Site was conducted on March 17, 20 II. Attending the Site visit was: Michael Townsend, Remedial Project Manger (RPM) for EPA and Doug Rumford, Hydrogoeologist for NC DENR Superfund Section. See Attachment 2 for the completed site inspection checklist.

During the site inspection, the landfill cover was covered properly and no bulges, erosion, slope instability or cracking were evident. It was noted that all groundwater extraction wells, pumps and pipelines were in good condition and operating properly. It was observed that the rip-rap at the outfall of the concrete culvert needed maintenance. The debris at the surface water headwall needed to be cleared. The JHSC addressed the surface water headwall issue in April 2011.

The treatment system electrical enclosures and panels were noted as in good condition as well as tanks, vaults, storage vessels, discharge structures and appurtenances, and treatment buildings were all observed to be in good condition. The monitoring wells were noted as being in good condition, functioning, and routinely sampled. It was noted that all monitoring data was submitted on time and acceptable quality.

6.6 Interviews

The following person was interviewed regarding the activities and implementation of the remedial actions at the ladco-Hughes Site. Only a portion of the interview is stated below. For the complete interview statement see Attachment 4.

Michael Townsend, EPA RPM: Overall impression of the project: A lot ofeffort has gone into the remediation o.lthe Site, The

PRPs have been proactive in addressing the changing conditions at the Site as lvell as proposing and implementing additional measures to enhance the remediation 0.(Site contarninants.

Do you have any comments, suggestions, or recommendations regarding the project (i.e., design, construction documents,. constructability, management, regulatory agencies, etc.)? ,

Future reports that evaluate the system should include an evaluation ofthe lateral and vertical extent o.lcontarnination beneath the property and down gradient. The reports should provide diagrams and graphs that dernonstrate the efFectiveness ofthe capture zone as lvell as plume maps identifjJing the extent ofthe contamination. There needs to be a plan developed to address the contarnination that is currently down gradient ofthe treatment systern,

Is the remedy functioning as expected? How well is the remedy perfonning? The remedy is adequate~v addressing the shallow contarninatioll as original(vdesigned:

31

Third Five-Year Review Jatteo-Hughes

Be/mO/1/, Gastoll Count)', NC

however the s.l/stem now requires the addition ofdeep extraction wells. The deep extraction "vells have been installed and H'il! be operational b.-v the time this jive year review is finalized.

The EPA is responsible for contacting and interviewing the community surrounding the Site for concerns, comments, and/or questions regarding the remediation at the Site for the FiveYear Review.

7.0 Technical Assessment

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

Yes, the remedial action continues to be operating as designed and rcs, as part of the remedy, have been implemented. However, groundwater contamination, originally believed to be primarily shallow, appears to have migrated to the intennediate and deep aquifers. The rnsc has been actively investigating the groundwater plume and has modified the OWTS to address this groundwater containment issue.

As stated above, rcs have been completed and implemented at the property. On July 20, . 20 II, the landowners of the Jadco-Hughes property signed a Declaration of Perpetual Land Use

Restrictions for the Jadco-Hughes Superfund Site. See Attachment 6 for a copy of the restrictive covenants.

The initial groundwater collection, extraction, and treatment system addres~ed the shallow impacted groundwater and, to a lesser extent, the intennediate impacted groundwater. Recent groundwater monitoring data shows intennediate VOC-groundwater impacts may exist in areas outside the primary capture area of the existing containment system. VOCs have been detected in groundwater samples collected from intennediate monitoring wells located downgradient of the perimeter collection system. VOCs have also been detected in groundwater samples collected from deeper portions of the saprolite. Modifications to the OWES were implemented to address the intennediate and deeper groundwater impacts.

32


Belmont. Gaston County. NC

Table 13: Institutional Controls Evaluation Summary

Ground Water

Yes Yes

lCs may include, but

not be limited to, deed

restrictions or covenants.

Yes Signed July

20,2011

Soils Yes Yes

ICs may include, but

not be limited to, deed

restrictions or covenants

Yes Signed July

20,2011

7.2 Question B: Are the exposure assumptions, toxicity data, clean-up levels and remedial action objectives (RAOs) used at the time ofthe remedy still valid?

There have been no changes in the physical conditions of the Site that would affect the protectiveness of the remedy. The exposure assumptions, toxicity data, and RAOs used at the time of the remedy arestill protective of human health and the environment. The Site is unoccupied therefore a vapor intrusion evaluation is not necessary at this time but this should be reviewed every five years to ensure this is not an issue. However, as stated above, some ARARs have changed. The NC 2L Standards on which several of the remedial goals are based were last amended on January I, 20 IO..Some of the chemical-specific ARARs have changed for the COCs since the remediation goals assigned in the ROD. CERCLA requires that the remedy comply with any promulgated standard that is more stringent than any federal standard. The 1990 ROD adopted NC 2L Groundwater Water Quality Standards as the remedial cleanup levels for several compounds. Several of the ROD-specified COCs currently have remediation goals that are less stringent than the NC 2L standards and the current federal MCLs. These contaminants are chlorobenzene, toluene, I, I, I-trichloroethene, bis(2-ethylhexyl)phthalate, 1,2Dichlorobenzene, 1,3-Dichlorobenzene, I,4-Dichlorobenzene, phenol, arsenic, barium, cadmium, chromium, nickel, and zinc.

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

No additional infonnation has come to light that could call into question the protectiveness of the remedy.

33

7.4

Third Five-Year Re\'iell' Jadea-Hughes

Belmollt. Gastoll County. NC

Technical Assessment Summary

According to documents reviewed, the exposure pathway to contaminated soil and groundwater has been mitigated. There are no known current exposure routes to contaminated soil or groundwater. Pennanent land use restrictions have beeIl: implemented at the Site. However, the remediation goals issued in the ROD at the time of the remedy do not meet the more stringent groundwater standards of the current NC 2L and/or the MCLs for chlorobenzene, toluene, I, I, I-trichloroethene, bis(2-ethylhexyl)phthalate, 1,2-Dichlorobenzene, 1,3Dichlorobenzene, I,4~Dichlorobenzene, phenol, arsenic, barium, cadmium, chromium, nickel, and zinc.

As stated previously, the existing groundwater collection, extraction, and treatment system addresses the shallow impacted groundwater and, to a lesser extent, the intermediate impacted groundwater. Recent groundwater monitoring data shows intennediate VOCgroundwater impacts may exist in areas outside the primary capture area of the existing containment system. VOCs have been detected in groundwater samples collected from intermediate monitoring wells located downgradient of the perimeter collection system. VOCs have also been detected in groundwater samples collected from deeper portions of the saprolite. Modifications were made to the groundwater extraction system to address the intennediate and deep groundwater impacts.

8.0 Issues

The following issues have been identified during this review.

1. The NC 2L groundwater standards were revised in January 2010. This resulted in more stringent standards for thirteen contaminants of concem than the remediation goals (RGs) that were set in the 1990 ROD.

2. Additional evaluation of the new extraction wells is required to assure they will fully address the contamination migration.

3. Landfill soi11eachate samples were omitted from sampling rounds in 2009 and 2010.

4. Groundwater contamination has migrated offsite in the northeast comer of the Site. 5. The Annual Reports submitted by the JHSC do not provide trend analysis, plume

contaminant maps, isoconcentration maps, volume of groundwater treated and volume of contaminant removed.

34


Belmonl. Gas/on Coullly. NC

.9.0 Recommendations and Follow-up Actions

T hi e .Recommen a IOns and JF0 HHow-U'Il Acfnonsa 14. d f

Issues

The NC 2L groundwatestandards were revised January 20 IO. This resuin more stringent standfor several COCs than tRGs that were set in the ROD.

ards

r in lted

he 1990

Early assessment indicathat the new extraction will resolve the issue of containment migration; however, additional evaluation is required to assure these modificatiwill fully address the problem.

ons

tes wells

Soil leachate samples womitted from sampling rounds in 2009 and 20 I

ere

O.

Groundwater contaminhas migrated offsite in tnortheast comer of the

ation

Site. he

Annual reports need to include all data for the (trend analysis, plume contaminant maps, isoconcentration maps, volume of groundwater treated and volume of contaminants removed remediation system.)

Site

by the

Recommendations/ Party Follow-up Actions Responsible

Detemline if the changes in the NC 2L will require changes to the RGs that were set

in the ROD.

EPA & State

Evaluate the modification to the extraction system to assure that they will

address the contaminant migration

Issue.

EPA& State

Sampling of soil leachate from the

landfill needs to be continued on a regular

basis.

JHSC

Develop a plan to address the

groundwater JHSC contamination that is down gradient of the

collection system.

To aid in the overall assessment of the Site, reports submitted by the PRP shall include JHSC trend analysis, plume

contaminant maps, isoconcentration maps, volume of

groundwater treated and volume of

contaminants removed by the remediation

system in the annual report.

35

Oversight Agency

EPA & State

EPA& State

EPA & State

EPA& State

EPA & State

Milestone Date

September 30,2013

September 30,2013

September 30,2013

September 30,2013

December 31,2011

Affects Protectiveness?

(YIN)

Current

Y

Future

Y

Y Y

Y

y

Y

y

N N

Third Five- Year Review Jadco-HlIghes

Belmon!. Gastoll COllllty. NC

The remedy atthe Jadco-Hughes Site is currently protective of human health and the environment in the short-tenn because 1) source soil-contamination was remediated through removals and treatment of soils through soil vapor extraction and soil flushing, and 2) groundwater contamination is currently being remediated by extraction and treatment. Currently no human exposure pathways exist to contaminated soil or groundwater. Institutional Controls (ICs) have been fully irnplemented at the Site and a Declaration of Perpetual Land Use Restri~tions has been signed. The groundwater contamination was originally believed to be primarily shallow, which the remediation system was designed to contain. However, in more recent monitoring periods, evidence of contamination in the intennediate and deep aquifers has been reported. The JHSC has been actively investigating the groundwater plume and has modified the groundwater extraction system to prevent additional contaminant migration. In order for the remedies to be protective in the long-tenn, the following actions need to be taken: confinn that the modification to the groundwater treatment system is adequately preventing' additional contaminant migration and develop a plan to address the groundwater contaminant that is down gradient of the collection system.

li LdD Next IRevnew

The next Five-Year Review for the Jadco-Hughes Site is required to be completed within five years from the EPA Region 4 Superfund Division Director's (or his designee) signature/approval date of this Third Five-Year Review.

36

O· 1000', ;

SOURCE: uSGS QUADRANGlE MM'. ~OUNT HOll..Y. N.C.

IFIGURE 1 I

eRA

SITE LOCATION JADeO-HUGHES SITE

Gaston County, NC

3669 (29) NOV 7/96 (w) REV.O

I I J /

650

o 50 100ftSHALLOW MONITORING WELL ~~~rl

SHALLOW PIEZOMETER

GROUNDWATER FLOW DIRECTION

GROUNDWATER CONTOUR (FT. AMSL)

GROUNDWATER ELEVATION (APRIL 30, 1993)

WATER LEVEL NOT MEASURED

SHALLOW GROUNDWATER FLOW PATTEF PRE-PUI

JADCO-HUGHE I

DEEP PIEZOMETER

PUMP WELL

o 50

~ 100ft

~

GROUNDWATER FLOW DIRECTION

GROUNQWATER CONTOUR (FT. AMSL)

GROUNDWATER ELEVATION (APRIL 30,1993)

WATER LEVEL NOT MEASURED I,

I I J I r

: I ~ - I I ((j

1 I - - -- -_. I______________ J~ _

- CASONSTREET .....,...,.----

"~' (653.50)

• MW110o (NMj

SPRING

PZ.1OD I (646.23)

DEEP GROUNDWATER FLOW PATTERI PRE-PUrv

JADCO-HUGHE~ I

=TER COLLECTION DRAIN 646----

l>KUUNUVVAI t:K t:Lt:VA IIUN In. AM~L)

GROUNDWATER CONTOUR

u ou "Iuun

~~~l

NELL GROUNDWATER FLOW DIRECTION

ILE

;HAMBER

Y1 MONITORING LOCATION

x- ------}}~

I I I I I I J

I I LL ." _

CASON STREET

----~--x----~~-X-~--'--Y::; ~'J

MWl85 J

~MW9S

~ • (649.21)

~

\

;j. \~~.

. ~)~.

. )"

NOTE: 1. GROUNDWATER CONTOURS GENERATED UTILIZING SURFER VERSION 8, SURFACE MAPPING SYSTEM, KRIGING METHOD.

SHALLOW GROUNDWATEF

"'.

I

I

vV IVVIt. ,....--. ....... 'J "'''VUI~U''I"\I c.l"\. <:U::Vt\IIU''1 \Il. t\M'=iL) UC.vC.Mtlt:K~,LUUj

:TER COLLECTiON DRAIN 646---- GROUNDWATER CONTOUR

VELL ... GROUNDWATER FLOW DIRECTION

LE

:HAMBER

/ NOTE: 1. GROUNDWATER CONTOURS GENERATED UTILIZING SURFER VERSION 7.03, -SURFACE MAPPING SYSTEM, KRIGING METHOD.

DEEP GROUNDWATEF

". .IAn~n-HI JnHI=~

FREQUENCY OF ACllVillES ACllVlTY MIKLy(l) QUARTERlY SEW!-ANNUALLY COMIolENTS

INSPECT SEClJRlTY FtNCt/GAlESftoacS. ** .*INSPECT SI1E WCETA11ON/EROSlON· .** INSPECT EX1RAC1lON YIEU. CtfAloiBERS· .* *lltfAntENT BVlU)~O EXlER/OR' '. * UISP£CT EXTRACllON YIEU. PUIolP FUNCTION. .* INSPECT "'H-5/l.lt1-12 PUMP fllNC1ION .* .** IIG'£CT AERAnoN'eL~ .* INSPECT PROCESS PIPING· .* .** INsPECT PROC£S INDICATORS' * WSPtCT CARSON ADSORSEJlS,MOS£' .** INSPtCT CA1l8Otl ADSORBER V'OC INDICATOR· .** INSPECT svt SY$lDI BLOW£RS. * * INSPECT sw: CAABOtJ Al>SORamS. ** INSPECT SVE PROCESS PlP\NC· * INSPECT SVE PROCE:SS INDICATORS * .** INSPECT SVE CARlON Al)SOR8£R we INDICATOR· * * INsPECT WtlY EQUIPMENT· .** UPDATE PROCESS RECOROiNC lOG' * .a.EANQUT CREtK CULVERT '1Nt.£T GRATE' .** ** .TEST FIRE ALARloI· .* * COIIPLETE Ali YIUICLV IlSPECTlON AHD WAlN1m'NCE AClMllES lOGo .* INVEHTORY/ORDER REQUIRED SPARE PARlS· INSPECT/CLEAN/TEST UNIT HEATERS ANa TH£RMOSTAT. .** INSPE:CT/CL£AN/TEST EXHAUST FAN AND 1liERUOSTAT. 1IISP£CT 00 1WClH.f' ~ SfIIJC1IJlAL STEfl NIl stmJlRON JIlPE. ** INSPECT AERAlION now 1I£l[R TUBE AND SAfETY SHIELD. CUAN BACl<f\.OW PREVENTER AND STRAINER. *#CtfEa</bRAIN CARBON AOSORBER& 'NsPECT/'ORAJN/aEAN SVE VAPORjUOUlO SlPARATORS' * INSPECTjCt.EAN SVE PARllCU\.Alt FlLTER E1nlEHT • CHECl</t)RAIN SVE CARBON AOSORUERS' * INSI'ECT/Ct£AN-OIJT DEBRIS FROM INlET TO roL\'ERT PIPE' * AT SOUTH END * OPfRATt AU. SOIL FUlSHIHG S'tSTEJ,l VAlVES' 'IF NOT RUNNING OPERATt AU. SOIl. FlUSHING S'tStnI FLOAT VAlVES'

.*. 'IF NOT RUNNING.*

lNSPECT/Cl£AN AU. SUMP PUWPS' ... OPERATt VAlVES 1'0 CONfIRW SIllOOTli OPERAllOO' ... CHECK/LU8IlICATE SVE BLOWER llEARING' TEST EWERGDlCY UGHTS" '* INSPECT/Cl£AN REWOTt \Il£ll. LEVEl. 1RANSWITTERS' ...'* INSPECT AERAllON COWPRESSOR(S) ROTOll. BODY AND END PLATt lEST AU. «:ROUND FAlJI.T RECEPl1a.ES· ...* CWN CAA80II PR£-t£A'lER ELDI£Nl N6) MCX IoU ~ lXH£ClKWS' CHECK AU. wee MOTOR STARltRS ANn ClEAN CONTACTS· * OlECK/av.N WASS FlJ1W ME'IER ~7lNG SlGIIAl CASU: W1TACTS' ...* CALIBRATE ,IOIASS Fl.OW METER (MRY 18 I.lONnlS~ ..... CHECK/CLEAN IoIASS now IoIEltR ElDlENl· INSPECT/Cl£AN VAQAAI TRANSIoUTlERS' .' ..CtlECK Bl~ MOUNTINGS' CHECK BLOWER FAN IWNlCE"

*.. *' CHECK/WBRICATt FNl SEARING' • CHECI(/I.UBRICATE BLOWER MOTOR' .a.

(1) FOR FIRST lIONTli OF OPERA1lOtl QUARTERt.Y TliERW1ER.

COpy TO CRA 651 COLBY DRIVE. WAiERLOO, ONTARIO N2V 1C2 TEL (519)725-.3.313 IFIGURE 6 FAX (519)725-1394

MAINTENANCE SCHEDULE JADeD HUGHES SITE

Gaston County, NCeRA. 3669 (23) MAY 26/97(W) REV.O (5-21)

I

\

••PZ9D

.. -.

• PZ5S

I----~----~----*_--

MH4

..-.-_----. -.. __

IIllIBI EXTRACTION WELL - PERIMETER COLLECTION DRAIN (VOCs - ANNUALLY, SNAs - ANNUAUBI-ANNUAL) o 50 100ft

~A';;; BACKGROUND MONITORING WELL ~~~!MANHOLE (METALS - BI-ANNUALLY)

GROUNDWATER SAMPLING COMPLETED IN ACCORDANCE WITH THE OCTOBER 21, 2004 LETIER

/ ( I I I I I I •ll _ •

CASONSTREET

-,;r1f~~r;-:-__"*----~~ "*....:-. ~~ "* ~\ \ \ ~ //l)( )( )( X )( \

\.'\ II: MW18S. MWl9S I /

';z\" '-'Wl!l91 0 /~ /\\ D // TREATMENT ...\ \ . RAISED CONCRETE PADS / / PLANT ./ ./ ~ \\0 .//~.[J././

\ \\ r - L MH8

L\~\ Q .MWl6S PZ2S. 11 MH3,! ~----------------.P'i;--=-~MW4S••MW40 OOEBRIS

/' .. --......... ~'\:'\ =.= 3S'!?ONCR:2:.ECULVERT ~~ = = - - - '----). \ I-r<='='-

" "MW17S PZ1S. . r--f"wn; .I .~ ~ 1f;~~;oO~ \

~. MH10 .,m.~lL"«!.\' I . \ \\

I ~' .. .\ 11\ • ~ -~~

.~".-'" SPRINGO r~t1P.J.

/

/ GROUNDWATER MONr

... 't \7a '.7,

LEGEND

------ PROPE;RTY UNE ."\\1;8 MONITORING WEll LOCATION ~ S • SHAlLOW, D • DEEP

------ TRE;A1ED WATER,DISCHARGE UNE • P29S PIEZOMETER LOCATION

S • SHAlLOW, D· DEEP 0 50 100IIPIPELINE

teU... PWt EXTRACTION WELllOCAliON----------- PERIMETER COLLECTION TRENCH

• e·~ MEMBRANE INTERFACE PROBE (MIP) MANHOLE0"''' SCREENING LOCATION

ti lJHS PUMP CHAMBER

\~

I IIFIGURE 8 MIP BORING LOCATIONS

/ JADCO-HUGHES SUPERFUND SITE Gaston County, NC

03669-10(TOWN190jGN.WAI)(l4 SEP 3012010

I

o I-S;;;ii

50 100ft

!

A208 ....,.., 712712010 7/2712010

8o,aBGS 2H6lBGS

I I

....'12:)). MW'23S

~1 1.211.1 12 14 3.tJ3Jl ~.9

~

112712010 7121/2010 1S-19ftBGS 27-31 ft BGS

RemedlaQon Goal (~)

Parameter

1,2-DIchIOfoothBne 0.38 Benzene 1 Carbon tetl&chlOl1do 0.269 cfs.1,2· DIchIOfoolhene 70 Elhylben>ene 550 Telracllloroolhene 0.7 Toluene 1,000 TridlIoroelhene 2.B VInyl chI0f\d0 0,015 X~ienes 530

IFIGURE 9

GROUNDWATER ANALYTICAL RESULTS JADCO-HUGHES SUPERFUND SITE

Gaston County, NC

CI2-8

1~~UlO 17J BenIeno 13 J cboI2_"" '100 T~:tae:n4 MO

~~~._-t:::==>ii3a~+_

.'000 42CO 3<QJ

27000 2500 2100

21200

71Z812010 9.So'MftBOS

• '-_X--X--'-_x .PZ~

2ltUJ_L~ __

d.s.-f ,2-acHotocltv:r.e EOT,lb<Neno Tei"adib~llt

T~ r_~

"'>1_ X)1one>

.".,.,\

/

,loMl

I

I

PIEZOMETER LOCATION S • SHALLOW, D- DEEP

~PWI EXTRACT/ON WELL LOCATION

CM"t

• e.------ PROPERTYWIE MEMBRANE INTERFACE PROBE (MIP) SCREENING LOCATION

- - - - - - TREATED WATER DISCHARGE LINE GROUNDWATER GRAB SAMPLE LOCATION I MIP SCREENING LOCATIONPIPEUNE

.01e GROUNDWATER GRAB SAMPLE LOCAT\OH ONLY ----------- PERJMETER COlLECTION TRENCH

0 ..... r---------SAMPLE lOCAllOflMANHOlE

llI WiS PUMP CHAMBER SAMPlED.'.TE

t::-====-t'='7~I=:m~o.~\.)e..,W55 MONITORJNG WELL LOCATION

S· SHALLOW, D· DEEP '--------PARAA'8ER

• PZ99

do-I~__ n HD(,.ol T_"""" 20) 2.1

_, .. 1=10 712&'2010

1I·1SftBGS ~ftOOS

1669-1O{TOWNl90)GN-WAOO2 OCT 2!V2010

LEGEND

.. "' = ='= PROPERTY LINE

==-=... ==-- PIPELINE

o MHI MANHOLE 40ft

I o 20I ! !

.~:\--_._ ... _-F-,=~ld~ . fL------l / KEY PLAN

PROPOSED PIEZOMETER I MONITORING WELL LOCATION

• MW6S MONrTORfNG WELL LOCATION S - SHALLOW, D -INTERMEDIATE. DD - DEEP

• PZ9S PIEZOMETER LOCATION S - SHALLOW, D - INTERMEDIATE, DD - DEEP

... PW1 EXTRACTION WELL LOCATION

PUMP CHAMBER l::il MH5

_.... ,... - ..._ -- TREATED WATER DISCHARGE LINE

.. ~ •. - .• ,. - ."., PERIMETER COLLECTION TRENCH

• MW15S

• MW15D

\ \

IFIGURE 10 I PROPOSED PIEZOMETER/MONITORING WELL LOCATIONS

JADCO-HUGHES SUPERFUND SITE Gaston County, NC

03669·1 0(TOWN194)GN-WA002 JAN 1712011

NOTE: CONTOURS BASED ON GROUNCWATERANALYTlCAl DATA OF SAMPLES COlLECTED IN OCTOBER. NOVEMBER AND DECEMBER 2010.

....-"""

• MW,:Z:S ND(1)":::.:

~.

IFIGURE 11 I TOTAL VOCs IN SHALLOW WELLS - 2010

JADCO-HUGHES SUPERFUND SITE Gaston County, NC

......_ •..:.1., .. -.,.......:......;;,::.__., .__ .'. _ --i.._.: .":':. _.__ .:;-:.. :-::---I'~_ .. _._·.~·.;.".:.:.;.::.::;.· _...;..;;.:.:.....,;! . ..i..-:~ ...:

- - --- - -_. PROPERTY LINE

TRE,ATEDWATER DISCHARGE LINE

PIPEliNE

PERIMETER COlLEC"fION DRAIN

MNIHOLE

PUMPCHMmER

EXTRAc;TION WELL LOCATION

_ .""" SHAllOW MONITORING WELL lOC'.TION

• PUG SHAlLOW PIEZOMETER LOCATION

TOTAl VOC CONCENTRATION (~gll'

a 50 'OOft100---- TOTAl VOC CONCENTRATION CONTOUR (~g,1.' b::S;;;J ! NOT SAMPlED

ND NOT DETECTED

03B69-10(PRES01SIGN·WAQOI FEB 15120"

.- - --- .- .-. PROPERn'L1NE .1Ntlot) INTERMEOtATE MONITORING WEll. LOCATION

TREATED WATER DISCHARGE liNE • """ INTERMEDIATE PIEZOMETER LOCATION

PIPELINE TOTAl VOC CONCENTRATION ("gJ1.)

o 50 100ft - .- - - '. - - - - - - PERIMETER COlLECTiON DRAIN 100----. TOTAl VOC CONCENTRATION CONTOUR (jIg1L) I-U I

MANHOLE NOT SAMPlED

PUMP CHAMBER ND NOT DETECTED

... ~1 EXTRACTION WEll. LOCATION

NOTE: CONTOURS BASED ON GROUNDWATER ANAlYTICAL DATA OF SAMPLES COLLECTED IN OCTOBER, NOVEMBER AND DECEMBER 2010,

·'1 ! ..;~.~

..:.. ....

•-= ND(\)

IFIGURE 12 1

TOTAL VOCs IN INTERMEDIATEWELLS-2010 JADCO-HUGHES SUPERFUND SITE

Gaston County, NC

03869-10IPRESOl o)GN-WA002 FEB 1012011

LEGEND

- - -- - -- PRQPERTYLINE

TREATED WATER DISCHARGE LINE

PIPEliNE

., .. - - - - - - -'- - PERIMETER COLLECTION DRAJN

MANHOLE

PUMP CHAMBER

EXrRACTION WELL LOCATION

• """"'0 DEEP MONITORING WELL LOCATION

11.' TOTAL VOCCONCENTAATION (1/11'1-)

100--- TOTAL vee CONCENTRATION CONTOUR ll'll.t.)

NOTE: CONTOURS BASED ON GROUNOWATERANAl.YT1CAL OATA OF SAMPLES COUECTED IN OCTOBER, NOVEMBER AND DECEMBER 2010.

~J 'or. ...__ .~.

,....- .. "

. ,

...._, ...,:.':.": .\, :)(,.,., '.~.

':,

...•:..... ~" .....

',:":'~" .'

.. _.! __.~--..-..~~.. :;_...

eMW1t1l0 t .•

~~."_' ~'::_::.... _•. ..~ _-._-._= .-.:.- ,.,;,;i:=......=-:;:-:-.~ ..-=~~..:: __ __

. .. ~:'\..

: i

.•..-<;.., .

.1'. "., I

:..-..--._ ......;........... _~ "." .• ..........: __ -_-_..... _.,~ """""',--. 0._'

50 100ft

U I

'"

IFIGURE 13 1

TOTAL VOCs IN DEEP WELLS" 2010 JADCO-HUGHES SUPERFUND SITE

Gaston County, NC

03669-'O(PRESOI5IGN-WA003 FEB 1012011


Belmollt. Castoll County, NC

ATTACHMENT 1 List of Documents Reviewed

-------- .._-----------------------------,

Third Fil'e-Year Rel'iew Jadco-Hughes

Be/mom. Gas/oil COUIl/)·. NC

Lust of ]]J)OC1lllmeIrllts Revuewedl Jadlco-JH[1lllgD'nes Sate

lFave-Year Revuew Report

U.S. Environmental Protection Agency, Region IV. September 30, 1990. Record Of Decision, Jadco-Hughes Site, Belmont, North Carolina.

U.S. Elivironmental Protection Agency, Region IV. September 1994. Explanation of Significant Difference. Jadco-Hughes Site, Belmont, North Carolina.

Conestoga-Rovers & Associates. May 1997. Remedial Action Report, Jadco-Hughes Site, Belmont, North Carolina.

U.S. Environmental Protection Agency, Region IV. September 26,2000. Five-Year Review Report, Charles Macon Lagoon and Drum Site, Cordova, North Carolina.

U.S. Environmental Protection Agency, Region IV. September 25,2001. First Five-Year Review, Jadco-Hughes Site, Belmont, North Carolina.

US Army Corp of Engineers. September 27, 2006. Second Five-Year Review Report. Jadco-Hughes Site, Belmont, North Carolina.

Conestoga-Rovers & Associates. June 2008. Containment Analysis Report, JadcoHughes Site, Belmont, North Carolina.

Conestoga-Rovers & Associates. October 2007 through October 2010. Quarterly Progress Reports, Jadco-Hughes Site, Belmont, North Carolina.

Conestoga-Rovers & Associates. June 2008. Residential Well Survey, Jadco-Hughes Site, Belmont, North Carolina.

Conestoga-Rovers & Associates. October 2008, Analytical Results-Fonner Landtill Data Collection and Evaluation Activities. Jadco-Hughes Site, Belmont, North Carolina.

Conestoga-Rovers & Associates. November 2008. Analytical Results-Additional Data Collection Activities. Jadco-Hughes Site, Belmont, North Carolina.

Conestoga-Rovers & Associates. February 2009. Annual Report-January to December 2008, Jadeo-Hughes Site, Belmont, North Carolina.

Conestoga-Rovers & Associates. July 2010. Work Plan for Modifying the Groundwater Extraction System, Jadco-Hughes Site, Belmont, North Carolina.

Conestoga-Rovers & Associates. November 20 IO. Intennediate Groundwater Impacts Investigation Data, Jadco-Hughes Site, Belmont, North Carolina.

Third Five-Year Revi£!',1' Jadco-Hughes

Belmont, Caston County, NC

ATTACHMENT 2 Site Inspection Checklist


Be/mom. Gas/oil COUll/V. NC

Please note that "O&M" is referred to throughout this checklist. At sites where LongTenn Response Actions are in progress, O&M activities may be referred to as "system operations" since these sites are not considered to be in the O&M phase while being remediated under the Superfund program.

FivemYear Review Site inspection Checklist (Template)

(Working document for site inspection. lnfonnation may be completed by hand and attached to the Five-Year Review report as supporting documentation of site status. "N/A" refers to "not applicable.")

I. SiTE INFORMATION

Site name: Jadco-Hughes Date of inspection: 3/17/11

Location and Region: 760 Cason St, Belmont, NC EPA 10: NCD 980 729 602

Agency, office, or company leading the five-year Weather/temperature: Sunny, 70 degrees review: USEPA Region 4

Remedy Includes: (Check all that apply) C; Landfill cover/containment r Monitored natural attenuation Sr Access controls r Groundwater containment r Institutional controls r Vertical barrier walls I;r Groundwater pump and treatment r Surface water collection and treatment rOther

Attachments: r Inspection team roster attached r Site map attached

II. INTERVIEWS (Check all that apply)

1. O&M site manager Name

Interviewed r at site r at office r by phone Problems. suggestions; r Report attached

Phone no. Title Date

2. O&M staff

Interviewed r at site r Name

at office r by phone Phone no. Title Date

Problems, suggestions; r Report attached

3. Local regulatory authorities and response agencies (i.e., State and Tribal offices, emergency response office. police department, office of public health or environmental health, zoning office, recorder of deeds, or other city and county offices, etc.) Fill in all that apply.

Agency Contact

Name Title Date Phone no. Problems; suggestions; r Report attached


Belmollt, Gastoll (Olillty, NC

Agency Contact

Name Problems; suggestions; r Report attached

Title Date Phone no,

Agency Contact



Agency Contact



4. Other interviews (optional) r Report attached.

-------------------- ---------------------------------.

Third Five-Year Review Jaclco-Hughes

Be/mollt. Gastoll COl/my. NC

III. ON-SITE DOCUMENTS & RECORDS VERIFIED (Check all that apply)

1. O&M Documents i O&M manual xf Readily available f Up to date f N/A i As-built drawings xf Readily available i Up to date fN/A f Maintenance logs f Readily available xl Up to date iN/A Remarks_monthly, quarterly, semi-annual

2. Site-Specific Health and Safety Plan xf Readily available i Up to date fN/A f Contingency plan/emergency response plan xf Readily available f Up to date iN/A" Remarks

3. O&M and OSHA Training Records xf Readily available f Up to date fN/A Remarks

4. Permits and Service Agreements f Air discharge pennit f Readily available r Up to date xiN/A f Effluent discharge i Readily available f Up to date xf N/A f Waste disposaL POTW f Readily available xf Up to date fN/A f Other permits f Readily available f Up to date fN/A Remarks

5. Gas Generation Records f Readily available i Up to date xf N/A Remarks

6. Settlement Monument Records f Readily available f Up to date xf N/A Remarks

7. Groundwater Monitoring Records f Readily available xf Up to date fN/A Remarks

8. Leachate Extraction Records f Readily available f Up to date xiN/A Reinarks

9. Discharge Compliance Records fAir f Readily available f Up to date xi N/A f Water (effluent) f Readily available xl Up to date fN/A Remarks_annually w/ City of Mount Holly

10. Daily Access/Security Logs xf Readily available f Up to date iN/A Remarks

Third Five- Year Review Ja,ko-Hughes

Be/moll/, Gaston County, NC

IV. 0&1\1 COSTS

1. 0&1\1 Organization r State in-house r Contractor for State r PRP in-house xr Contractor for PRP r Federal Facility in-house f Contractor for Federal Facility f Other

2. 0&1\1 Cost Records r Readily available f Up to date r Funding mechanism/agreement in place Original O&M cost estimate r Breakdown attached

Total annual cost by year for review period if available

From To f Breakdown attached Date Date Total cost

From To r Breakdown attached Date Date Total cost


From To f Breakdown attached Date Da\e Total cost


3. Unanticipated or Unusually High 0&1\1 Costs During Review Period Describe costs and reasons:

V. ACCESS AND INSTITUTIONAL CONTROLS f Applicable f N/A

A. Fencing

1. Fencing damaged r Location shown on site map xf Gates secured fN/A Remarks

B. Other Access Restrictions

1. Signs and other security measures f Location shown on site map fN/A Remarks_signs on gate, treatment bldg, fence

Third Five-Year Rel'iew Jaclco-Hughes

Be/mom, Cas/oil COUl11y, NC

C. Institutional Controls (ICs)

l. Implementation and enforcement Site conditions imply ICs not properly implemented f Yes fNo fN/A Site conditions imply ICs not being fully enforced fYes fNo fN/A

Type of monitoring (e.g., self-reporting. drive by) Frequency Responsible party/agency Contact

Name Title Date Phone no,

Reporting is up-to-date f Yes fNo fN/A Reports are verified by the lead agency f Yes fNo fN/A

Specific requirements in deed or decision documents have been met f Yes fNo fN/A Violations have been reported f Yes f No f N/A Other problems or suggestions: f Report attached

2. Adequacy f ICs are adequate f ICs are inadequate IN/A Remarks

D. General

I. Vandalism/trespassing I Location shown on site map xf No vandalism evident Remarks

2, Land use changes on site Xl N/A Remarks

3. Land use changes off site Xl N/A Remarks

VI. GENERAL SITE CONDITIONS

A. Roads f Applicable f N/A

l. Roads damaged I Location shown on site map xf Roads adequate fN/A Remarks__gravel drive-way access from Cason St

Third Five- Year Review ladeo-Hughes

Belmont. Gastoll COUlltv. NC

B. Other Site Conditions

Remarks

VII. LANDFILL COVERS xf Applicable fN/A

A. Landfill Surface

I. Settlement (Low spots) f Location shown on site map xf Settlement not evident Areal extent Depth

Remarks

2. Cracks f Location shown on site map xf Cracking not evident Lengths Widths Depths

Remarks

3. Erosion f Location shown on site map xf Erosion not evident Areal extent Depth Remarks

4. Holes f Location shown on site map f Holes not evident Areal extent Depth Remarks_rodent holes evident, bush hogging should be done

5. Vegetative Cover f Grass xf Cover properly established f No signs of stress f Trees/Shrubs (indicate size and locations on a diagram) Remarks

-

6. Alternative Cover (armored rock, concrete, etc.) xfN/A Remarks

7. Bulges f Location shown on site map xf Bulges not evident Areal extent Height Remarks

8. Wet Areas/Water Damage xf Wet areas/water damage not evident f Wet area's f Location shown on site map Areal extent f Ponding f Location shown on site map Areal extent f Seeps f Location shown on site map Areal extent f Soft subgrade f Location shown on site map Areal extent

--------------~~~~~~~~~~~~~~~~~~~~~~~~~~~~-------,


Be/mom. Gas/on County. NC

9.

B.

I.

2.

3.

C.

1.

2.

3.

Remarks

Slope Instability Areal extent Remarks

1 Slides I Location shown on site map Xl No evidence of slope instability

Benches 1 Applicable Xl N/A (Horizontally constructed mounds of earth placed across a steep landfill side slope to intemlpt the slope in order to slow down the velocity of surface runoff and intercept and convey the runoff to a lined channel.)

Flows Bypass Bench 1 Location shown on site map Xl N/A or okay Remarks

Bench Breached 1 Location shown on site map Xl N/A or okay Remarks

Bench Overtopped 1 Location shown on site map Xl N/A or okay Remarks

Letdown Channels I Applicable Xl N/A (Channel lined with erosion control mats, riprap. grout bags, or gabions that descend down the steep side slope of the cover and will allow the runoff water collected by the benches to move off of the landfill cover without creating erosion gullies.)

Settlement 1 Location shown on site map X No evidence of settlement Areal extent Depth Remarks

Material Degradation 1 Location shown on site map X No evidence of degradation Material type Areal extent Remarks

Erosion I Location shown on site map x No evidence of erosion Areal extent Depth Remarks


Belmol/I. Gaslon C011I71V, NC

4.

5.

6.

I.

2.

3.

4.

5.

Undercutting r Location shown on site map xr No evidence of undercutting Areal extent Depth Remarks

Obstructions Type xr No obstmctions r Location shown on site map Areal extent Size Remarks

Excessive Vegetative Growth Type ~r No evidence of excessive growth r Vegetation in channels does not obstnlct flow r Location shown on site map Areal extent Remarks

D. Cover Penetrations xr Applicable rN/A

Gas Vents r Activer Passive ~r Properly secured/locked r Functioning r Routinely sampled r Good condition r Evidence of leakage at penetration r Needs Maintenance rN/A Remarks no longer active

Gas Monitoring Probes r Properly secured/locked r Functioning r Routinely sampled r Good condition r Evidence ofleakageat penetration r Needs Maintenance xr N/A Remarks

Monitoring Wells (within surface area of limdfill) r Properly secured/locked r Functioning r Routinely sampled r Good condition r Evidence of leakage at penetration r Needs Maintenance xr N/A

Remarks

Leachate Extraction Wells r Properly secured/locked r Functioning r Routinely sampled r Good condition r Evidence of leakage at penetration r Needs Maintenance xr N/A Remarks

Settlement Monuments r Located r Routinely surveyed xrN/A Remarks

Third Fiw-Year Review Jadeo-Hughes

Belmonl, Gasloll CO/lIlI1', NC

E. Gas Collection and Treatment f Applicable xf N/A

I. Gas Treatment Facilities r Flaring f Thermal destruction f Collection for reuse r Good conditionf Needs Maintenance Remarks

2, Gas Collection Wells, Manifolds and Piping r Good conditionf Needs Maintenance Remarks

3, Gas Monitoring Facilities (e,g., gas monitoring of adjacent homes or buildings) r Good conditionf Needs Maintenance fN/A Remarks

F. Cover Drainage Layer f Applicable xf N/A

I. Outlet Pipes Inspected f Functioning f N/A Remarks

2, Outlet Rock Inspected f Functioning f N/A Remarks

G. Detention/Sedimentation Ponds f Applicable xfN/A

I. Siltation Areal extent Depth fN/A r Siltation not evident Remarks

'1"-. Erosion Areal extent Depth

f Erosion not evident Remarks

3, Outlet Works f Functioning f N/A Remarks

4, Dam f Functioning fN/A Remarks

--

Third Five-Year Review Jacko-Hughes

Belmollt, Gastoll COl/llty, NC

H. Retaining Walls r Applicable xr N/A

I. Deformations r Location shown on site map r Deformation not evident Horizontal displacement Vertical displacement Rotational displacement Remarks

2. Degradation r Location shown on site map r Degradation not evideni Remarks

I. Perimeter Ditches/Off-Site Discharge xr Applicable rN/A

I. Siltation r Location shown on site map xr Siltation not evident Areal extent Depth Remarks

2. Vegetative Growth r Location shown on site map rN/A 1;r Vegetation does not impede flow Areal extent Type Remarks

3. Erosion r Location shown on site map xr Erosion not evident Areal extent Depth Remarks

4. Discharge Structure r Functioning rN/A Remarks surface flow is north/northeast to creek

VIII. VERTICAL BARRIER WAl.LS r Applicable xr N/A

I. Settlement r Location shown on site map r Settlement not evident Areal extent Depth Remarks

2. Performance MonitoringType of monitoring r Perfonnance not monitored Frequency r Evidence of breaching Head differential Remarks

Third Fire-Year Reriell' Jadco-HlIghes

Belmont. Castoll COIlIIIV, NC

IX. GROUNDWATER/SURFACE WATER REMEDIES xf Applicable r N/A

A. Groundwater Extraction Wells, Pumps, and Pipelines Xl Applicable 1 N/A

1. Pumps, Wellhead Plumbing, and Electrical ~l Good condition Xl All required wells properly operating 1 Needs Maintenance f N/A Remarks

2. Extraction System Pipelines, Valves, Valve Boxes, and Other Appurtenances ~l Good condition f Needs Maintenance Remarks

3. Spare Parts and Equipment ~f Readily available f Good condition r Requires upgrade f Needs to be provided Remarks

B. Surface Water Collection Structures, Pumps, and Pipelines xf Applicable fN/A

1. Collection S'tructures, Pumps, and Electrical ~r Good condition f Needs Maintenance Remarks_groundwater discharge collection around site perimeter

2. Surface Water Collection System Pipelines, Valves, Valve Boxes, and Other Appurtenances ~f Good condition Xl Needs Maintenance Remarks surface water headwall needs to be cleared of debris-

3. Spare Parts and Equipment ~l Readily available 1 Good conditionf Requires upgrade 1 Needs to be provided Remarks


Be/mont, Cas/oil COUlltl', NC

C. Treatment S)'stem xf Applicable fN/A

I. Treatment Train (Check components that apply) f Metals removal f OiUwater separation f Bioremediation Sf Air stripping f Carbon adsorbers f Filters f Additive (e.g., chelation agent, flocculent) f Others f Good condition f Needs Maintenance Sf Sampling ports properly !parked and functional f Sampling/maintenance log displayed and up to date : kept on file at contractor office, updated annually Sf Equipment properly identified f Quantity of groundwater treated annually f Quantity of surface water treated annually Remarks

2. Electrical Enclosures and Panels (properly rated and functional) fN/A xf Good condition f Needs Maintenance Remarks

3. Tanks, Vaults, Storage Vessels fN/A xf Good condition f Proper secondary containment f Needs Maintenance Reinarks-IJressure washed and cleaned out Feb. 2011

4. Discharge Structure and Appurtenances fN/A xfGood condition f Needs Maintenance Remarks

5. Treatment Building(s) fN/A xf Good condition (esp. roof and doorways) f Needs repair Sf Chemicals and equipment properly stored Remarks-----.pvc primer & glue, spray paint

6. Monitoring Wells (pump and treatment remedy) Sf Properly secured/locked xf Functioning xf Routinely sampled xf Good condition Sf All required wells located f Needs Maintenance fN/A Remarks

D. Monitoring Data

I. Monitoring Data Sf Is routinely submitted on time xf Is of acceptable quality

2. Monitoring data suggests: f Groundwater plume is effectively contained f Contaminant concentrations are declining

Third Five-Year Review Jacleo-Hughes

Be/mont, Gaston Coullly, NC

D. Monitored Natural Attenuation

1. Monitoring Wells (natural attenuation remedy) r Properly secured/locked r Functioning r Routinely sampled r Good condition r All required wells located f Needs Maintenance xfN/A Remarks

X. OTHER REMEDIES

If there are remedies applied at the site which are not covered above, attach an inspection sheet describing the physical nature and condition of any facility associated with the remedy. An example would be soil vapor extraction.

XI. OVERALL OBSERVATIONS

A. Implementation of the Remedy

Describe issues and observations relating to whether the remedy is effective and functioning as designed. Begin with a brief statement of what the remedy is to accomplish (i.e., to contain contaminant plume, minimize infiltration and gas emission, etc.).

B. Adequacy ofO&M

Describe issues and observations re lated to the implementation and scope of O&M procedures. In particular, discuss their relationship to the current and long-tenn protectiveness of the remedy.

Third Five- Year Review Jadeo-HI/ghes

Belmollt, Castoll COl/illy. NC

Co Early Indicators of Potential Remedy Problems

Describe issues and observations such as unexpected changes in the cost or scope ofO&M or a high frequency of unscheduled repairs, that suggest that the protectiveness of the remedy may be compromised in the future. '

D. Opportunities for Optimization---=---------------------------------l

Describe possible opportunities for optimization in monitoring tasks or the operation ofthe remedy.

Third Five-Year Revie-..v Jadeo-Hughes

Be/mol/t, castoll COUllty, NC

ATTACHMENT 3 Photographs

Third Five-Year Review JadeD-Hughes

Belmont, Gaston County, NC

PHOTOGRAPHS

Photo 1

Photo 2

Third Five-Year Review Jaqco-Hughes


Photo 4



Photo 5

Photo 6



Photo 7


Be/mont, Gaston County, NC

Photo 9

Photo 10



Photo 11

Photo 12



Photo 13

Photo 14

Third Five-Year Rel,iell' Jadeo-Hughes

Belmont, Castoll County. NC

ATTACHMENT 4 Complete Interviews

Third Five-rear Review Jaden-Hughes

Belmollt. Gastoll Coullty. NC

Jadco Hughes Site Belmont, Gaston County, NC EPA ID: NCD 980729602 Superfund Third Five-Year Review Report

Interview Questionnaire Completed by Michael Townsend, US EPA RPM

I. What is your overall impression of the project? (general sentiment)

A lot ofeffort has gone into the remediation o.lthe Site. The PRPs have been proactive in addressing the changing conditions at the Site as lyell as proposing and implementing additional measures to enhance the remediation o.lSite contarninants.

2. What effects have site operations had on the surrounding community? The community has experience little to no impact from the operation o.fthe Sites remediation system.

3. Are you aware of any community concerns regarding the site or its operation and administration? If so, please give details. ! am not mvare o.fan.v adverse community concerns pertaining to the operation ofthe Site.

4. Have there been any complaints, violations, or other incidents related to the site requiring a response by your office? If so, please give details of the events and results of the responses..

No.

5. Do you feel well informed about the site's activities and progress? ! am kept we11 ir!formed o.fSite activities. .

6. Do you have any comments, suggestions, or recommendations regarding the site's management or operation? ! don't have any comments or recomrnendations pertaining to the management ofthe Site at this time.

7. What is the current status of construction (e.g., budget and schedule)? The Site is currently construction complete, however additional modlfication have been made to the system (insta11ation o.{additional deep extraction we11s).

8. Have any problems been encountered which required, or will require, changes to this remedial design or this ROD? The original design anticipated the majority o.{the contamination lvas c01~fined to the sha11oH' aqu({er. However, contaminants at the Site have begun to migrate via the intermediate and deep aquifers. The extraction system requires mod?flcation to address the additional contaminant migration.

Third Fil'e-Y,ear Revie\l' Jadeo-Hughes

Belmollt, Gaston COIlIIIV, NC

9. Have any problems or difficulties been encountered which have impacted construction progress or implementability? No. .

10. Do you have any comments, suggestions, or recommendations regarding the project (i.e., design, construction documents, constructability, management, regulatory agencies, etc.)? Future reports that evaluate the system should include an evaluation ofthe lateral and vertical extent ofcontamination beneath the property and down gradient. The reports should provide diagrams and graphs that demonstrate the effectiveness ofthe capture zone as 1-vell as plume ;llaps identifying the extent ofthe contamination. Their needs to be a plan developed to address the contamination that is currently down gradient ofthe treatrnent s.vstem.

II. Is the remedy functioning as expected? How well is the remedy performing? .The remed,y is adequate~v addressing the shallow contamination as origina/~v

designed; however the system now requires the addition ofdeep e.-rtraction wells. Their deep extraction wells have been installed and will be operational by the time this jive-year revie1-v is finalized.

12. What does the monitoring data show? Are there any trends that show contaminant levels are decreasing? The monitoring data shmvs that there is an increasing problem in the deep aqu[(er at the Site.

13. Is there a continuous on-site O&M presence? If so, please describe staff and activities. If there is not a continuous on-site presence, describe staff and frequency of site inspections and activities. No

Third Five- Year Review Jadco-Hlighes

Be/mont, Gastoll COlillty. NC

ATTACHMENT 5 Summary of Historical Groundwater Data

I·~S ,\1W-.:!S .\1\\'·.:!S ,\1\\'·25 ,\1\\'-25 ,\'\\'-25 MW·15 MW-.:!S MW-2S MW-2S I\1W-25 MW-2S

IO.'i-IHU-O.lJ W.l669/BU09220-iOO3 W-3669-1 BU-l.:!2005-0.:!7 \\'-3669-1 BU-OJ.:!1 06-,\'~V25 G\'I'-J669-/U-Ot>2IJOt>-MI\'1S r.W-.l669-IU-1 ~~06--{]J7 C;W-3t>h9·11I-12206-018 CW.J6f>9·IU-J.21J07-(I4.1 .1h69·IU.IJh1riOS-OO': (; 1\'-.1riri9-1U- J2J608-009 GW-3669-IU-U70909-00J GW-J66.'J-IU-1217Q9-029

!OO5 0/2::1'005 J~t:V20U5 ~J/200tl tV2~OO6 1:?,!2!V-!OOti 1V.2!V2006 .1~-V1007 <i'1<v.!OOS lV1~Of)", 7,19/.!OO9 1~7/2009

Rt'plicl1tc

(1) :"JD{I) :-JD(l) :"JD(I) \10(1) :"JD{l) ;\1D(I) ;..J0(1.0) :-JD(lO) :-JD(1.0) :-.JO(lO) :-JD(1.0)

(1) NO(I) :-.JD{I) :-.JD(l) NO(l) :-.JD(l) :-JD(l) :-JD(1.0) :-JD(lO) ND(l.O) :-.JD(lO) ND(1.0)

(l.1 'lD (1). :-.JO(l) :-.JO(l) :-JD(l) :-J0(1) :-J0(l) :-J0(1.0) :-J0(l0) :-.J0(1.0) :-J0(10) :-J0(1.0)

1.1) :-JD(l) NO(1) NO(l) :-JD(l) :-.JO(l) :-JD(l) ND(IO) :-JD(1.0) :-JD(1.0) 010001 :-JD(IO)

(1) :-JD(l) :-J0(l) :-JD(l) :-J0(1) \lD(1) :-JD(l) NO(I.U) :-JD(lO) :-.JO(1.0) :-.JO\1.0} NO (1.0) (l) :"JD(1) NO(l) ND(I) :-.JO(l) :-.JO(I) :-.J0(i1 NO 11.0) NO (1.0) :\10(1.0) :'\IOi1.0J NOll O} (I) NO(l) NO\l) ND(l) ND(l) :-.JD(I) ND(I) NO fLO) :-..!D (1.0) :"JD (1.0) ND(l.ll) NO (1.U)

(11 ND(l) ND(l) ND(l) ND(l) :-J[Jl]) N[llll :'\J[1(1.l11 :--J0\1.0) :"J0(1.0) :--JO (1.U) :'\10 (1.U)

(1) N[l(1) :\10(1) :\ID(1) NO(l) NOll) NOll) ;'\JD (l.01 NO/1.0J :--J0(1.0) NOO.lll :'\JO 11.U) (11 NO(ll :"JO(l) :\IDtll NO(1) ~..JO (1) NOll") ;..JO(l.Ol NO/1.0} :-..10(10) NO (1.l1) NO (1.0)

(11 NO(l) :\lOll) :\10(1) NO(1) NO(1) NO(I) NO(l,U} ND{l U) :-.JDII 0) :\1'01.1.01 NOn.O) (1) NO(l) :-J0(1) :-J0(1) ND(l) ND(1) ND(l) :-J0(1.0) ND(lO) ND{IO) NO 1.1.01 NO (1.0)

(1) NO(l) :-J0(1) ND(l) ND{l) :-JD(1) NDll) NO (1.0) :-.JD (1 0) ND{1 UJ :\1'011.01 NO (I.U)

(l) NO(l) :-J0(1) ND(1.) :-J0(1) :-JD(1) ND(l) \lD(1.0) NO (1.0) ND(lO) :"J0(l.0) ND(1.0)

(1.1 NO(I) NO(l) :-JD(l) ND{I} :-JD(l) NO(l) \lD(1.0) NO (1.0) :-J0(10) NO (1.0) NO (I.U)

(I) NOil) NO(1) :-J0(1) :\ID(l) :-.JD(1) NO(l) :-J0(1.0) :\10 (1.0) NO(IO) NO (l.0) :-JD(1.0)

(1.1 :-JD(l) :-J0(l) NO{l) :"J0(1) :-.JD(1) :-J0(l) :-JD(1.0) :\10 (1.0) :-.JO (I 0) :-J0(l0) :-JD(1.0)

(11 :-JD(l) :-.JD(l) :-JD(l) :-JD(l) \lD(l) :-JO(l) NO (1.01 NO (1.0) :-.J0(1.0) :-J0(10) NO(10)

(1) ND(l) :-.JD(l) :-J0(1) NO(l) :-JD(l) :-JO(l) :-J0(1.0) :-JD (1.0) :-.J0{1.0) :-.JD(1.0) ND{lO) 19 1.8 :-J0(l) 'lD(l) :-.J0(1) :-J0(1) NO(I) :-J0(1.0) :-JD (1.0) :-.J011.0) :\ITI (1.0) :-J0(1.0)

(l) :-JD(l1 :-J0(l) NU{l) :-JD(l) :-JD(l) :-JD(l) :-J0(1.0) :-JD (1.0) ND(1.0) 'lD (La) NO (1.0)

(1) NO(I) :-J0(1) :-JD(l) :-JD(l) :"J0(2) :-JD(,) ;..J0(20) NO 1.2.0) 1'0(5.0) :'..J0(5.tl) 010(5.0) (1) NO(1) NO(l) ND(l) :-JD(I) NO(l) \lD(1) NO(10) NO (1.0) ND(1.0) :-JD(10) ND(lO)

(I) NO(I) NO{I) NO(I) :-JD(l) NO(2) ND(2) NO(20) NO (5.0) ND(5.0) :-JD (50) ND(50)

(11 NO(1) :-JD(l) ND(l) ND(l) :-JO(l) NO(l} NOIIO) NO(IO) NO (1.0) NO (1 0) :-J0(1.0)

(1) NO(l) ND(I) ND(l) NO(l) :-JO(ll :-.lO(l} NO(lO' NO(lO) NO (1.01 ND(lO) ND(1.0)

(11 NOll) NDI1) NOll) ND(1) :'>JO (2) ;..JO(2) ND(20) :"J°t2 O) ND(='.O) ND(50) :-J0(501

I B NOllJ 2.3 Non1 16 NO(2) ND(2) ND{20J :"JD(5U) :\11:1(='.0) NO\50) :-.JU (~Ll)

(1) NO(1) NO(l} ND(l) NO(l) NO 1.1) NO(l) NO(I.O) :"JD (10) ;-..ID(l.O) NO{lO) N[J(lO\

(I) NO(l) NO(l) ND(l) NO(l) NOll) NO{l) ND (I.U) NO(l U) ;-..ID(1.0) NO{lO) :-JD (1.U)

(l) :"J0(1) ND(l) NO(l) NO(l) ND(l) ND(l) ;'\J0(1.0) :-J0(10) NO (1.0) NO(lO) N['(J.O)

(11 :-JD(l) :-J0(1) NO(l) ND(l) ND(l) ND(l) :'\ID(l.O) ND(1.0) :'\10(1.0) :-J0(1.0) \lD(l.U)

'(l) NO(l) \lD(l) ND(l) :-.J0(l) ND(l1 NOn) :-JD(1.0) ND(l.0) :-JD(1.0) :\10(1.0) NO (1.0)

(ll :-JD(l) :-JO(l) :-JD(l) :-JD(l) :-JD(l) :-JO(l) NO (1.0) :-JD(1.0) I'D (1.0) :-J0(1.0) :-J0(1.0)

(1) :-JD(l) :-Jol.1) :-JD(l) :-JD(l) :-J0(1) :-J0(1) :-J0(1.0) :-JD(1.0) :-..!0(1.0) :-J0(1.O) I'D (1.0)

(1) :'\10(1) NO(l) :\10(1) :-JD(1) :-JD(l) NO(l) NO(1.0) :-JD(1.0) ~0(10) :-J0(1.0) NO (1.0)

(l) NO(I) :-J0(l) :-JD(l) :-JD(l) NO(l) :-JO(I) :-J0(1.0) :-J0(1.0) :-JD(lO) :-JO(LO) :-JD(1.0)

(I) NO(I) :-JO(l) :-JD(l) :-JD(I) :-J0(l) .:-JD(I) :-J0(1.0) :-J0(1.0) ND(IO) :-.JD(1.0) NOtl.O) '(1) NDO) :-J0(1) :-JD(l) :-JD(l) :-J0(1) :-JO(I) :-J0(10) :-J0(1.0) :-JO(lO) :-JD(1.0) :-Jo (1 0)

(I) :-J0(l) :-J0(l) ND(I) :-J0(1) :-J0(l) :-JO(I) :-J0(l01 ND(1.0) :-J0(l0) :-J0(1.0) :-J0(l0)

(1) ND(l) NO(I) NO (I) :-JD(l) NO(l) :-J0(l) NO(lO) :-JD(1.0) :-.JDI.IO) :-J0(1.0) :-J0(10)

(1) NDP) ND(I) :-JD(1I ND(l) :-JO(I) :-J0(l) NO(IO) .ND(1.0) NO (1.0) :-J0(l0) NO(lO)

(1) ND(1) NO(I) NO(1) ND(l) NO(l) NO(l) NO(lO) NO(lO) NO (1.0) NO(lO) NO(IO)

(I) NOll) NO(I) ND(l) NDfl) NO{l) NO(l} NO(IO) NO(lO) NO (1.11) NO(lO) NO(IO)

(I) ND(I) NO(lJ NO(1) \lD(l) NO(l) ND(11 NO{IU) NOl.10) NO (1.11) NOll U) NO (1.0)

III :"JO!.I) ND(l} ND!.ll ND(l) NO 1.1) NDl1) ND\1 U) NO\IO) NO (1.11) ND{1 U1 NDll.01 il) NO(l] ND(l} NU(l) NO(l) ND(.l) ND{I) ND!.} U) NO{1 U} NO (1.0) ND(IO) ND(l.U}

0) ND(l) NO(l) NO(11 ND(l) NO(l) NO(I) NO (l.Uj NO(1 U) :\10 (l.U) NO(I.U) :-Jo (1.U)

(1) NO(l) ND(l) :-.JO(J) :-J0(1) ND(l) ND(I) :-J0(1.0) NO (.1.0) :\10(10) NO(1.0) :-JD(1.0)

(11 NO(l) ND(ll NO(l) :-J0(l) NO(l) ND(l) ND(1.0) ND(1.0) :-.J0(10) :'\JO(l.O) ND(1.0)

(1) NO{l) :-J0(11 :-J0(l) :-JO(I) NO(l) ND(I) NO (1.0) ND(1.0) :-.JDll U) :-JD(1.0) NO(l.O)

(1) :-J0(1) NO(l) :-J0(l) :-JO(I) :-J0(l) :-JD(l) NO (l.01 ND(2.0) :-.JD (.2 U} :-JD (2.0) NO (10)

(1) :-J0(l) :-JD(l) :-J0(1) :-J0(l) :-J0(l) :-J0(1) :-J0(l0) NO (1.0) :-J0(l0) :-JD(1.0) NO (1.0)

)) UJ :-J0(1) :-JO (7.5.1 U :-.JD(1) :"JD(l) :-J0(1) :-J0(1) :-J0(10) NO (1.0) :-J0(10) :-.JD(l.O) :-JD (1.0)

'(1) :-J0(l) :-J0(1) :"J0(1) :"JD(l) :-J0(1) :-J0(1) :-JO(IO) :-JD(1.0) :-J0(10) :-.J0(1.0) :-Jo (5.0)

'(I) NOt1) ND(l) :'\J0(l) :-JD(l) :-J0(1) NO(J) :-JO(IO) :-JD(1.0) :-J0(10) :-.JO (1.0) :-JO(IO)

:-.JO(l) :-JD(l) :-JO(IO) :-.JO (l 0) :-J0(1.0) :-.JO (1.UI :-JD(IO)

'(I) ;'\JDl.1) :\IO{l) :-.JD(1) :-JO(l) :-J0(1) NO(l) NO(lO) :-.JO (1.0) :-J0(1.0) NO (l.0) :-J0(50)

'(1) :-J011) NO(l) NOP) :-JO(l) :-J0(1) :-.JD(l) NO(lO) :-.JO (1.0) :-J0(1.0) NO (1.0) :-J0(501

'(I) ND(1) :-JD(l) NOll) :-J0(l) NOl.l) :'\l0(1) ND(IO) NO (1.0) :-J0(1.0) NO (1.0) NDIIO)

'(1) :"J0(1) :'\JD(l"1 NOn) :-.JD{l) NO(l) :'\lD(l) NO(l.O) :-Jo (1.0) NO(l.ll) NOlI.O} :-J0(l0)

·(11 :"J0(1) ND(l) NO(l) :-JD(l) NU(l) :-JD(l) NO 1.(0) :"JD (I 0) ND(l.O) . NDti.l1) NDIIO)

III :-.JO(ll :"JD(ll ND(l} ND(1) :"JD(l) ;'\J0(l} ND(l.O) :"JO (1 OJ NU(l.O) Non O} ND(10)

(II :\10 III :\JD{ll N[1(I) N[l(l) :'\1[1(1) ND(l) ND(l U) NO(I (I) NDl1.U) ND(1 U} ND(l U)

(II ND(1) :\IO(l} ND(l) ND(l) :'JO(I) ND(l) :'\J0(1.0) :-.JD(l.Lt) NO\1.Ll) :"J[' (l.U) ND(10) (1) NOll1 NO(l) NO (I) NO(I) :-.JO(J) NO(I) ND(l.O) NO(1.0} NO (1.0) :'\JD(I.O) ND(I U)

(I) ND(l) \lD(1) ND(l) NO(l) :-.JD(:') NO (.2) NO (2.0.1 NO(2.U} NO{'2.0) ND('2.0.) :\ID('2.0) (1) NO(l) :-J0(1I :-J0(1) NO(l) :-.JO(l) :-JD(l) ND{l.O} ND(l.U) \100.0) ND(1.01 :-J01.1.0)

1·25 ,\'W·25 MW-.?5 Ml\'-25 ,\nv-25 MW-25 MW-.?S MW-.?5 ,\IW-:?S ,\IW·.?S ,\.,W-15 MW·.?S

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(10) NO (9.Q) :'\10 (10) "D(9.7) :"J0(1O) ;\JD ('1.6) NO (.9.5) :'\10 (9.9) "D(lI) "D(II) :"JO(ll) :'\ID(11)

(l0) :-.JDf9.9.l :-.JD(lO.l "D(9.7) ,'JD(lO) :--JD{9.6) NO(~5) ;'\JD (9.9) "D (I I) "D(II) ;-.JD(11) "D(lI)

(10) ;\J0{Q.9) :'-.1D (W) ;\JD(9.7) "D(lO) :"JO (9.6) :'\ID(~.5) :'-.1D (9.9) :'-.1D(11) "D(II) NO (11) :'-.10(11)

(10) ND(9<1) ;\JO (10) ;\JD(9.7) ND (lUI NO (9.6) NO (9.5) NO (4.9) ;\J0(11) "D(ll) ND(11) NO{ll)

(10) ND (9.~)} ;\JD(IO) :-.JD(97) ND{lll) ND(4.b) ND(Y5) ND (9.9) ND(ll} ;\Jo(1) NO(11l NO Ill)

(10) NOl,9.9) ;\JO (1O) "D(9.7) ND(IO) NO (Q.6) NO(95) NO t9.9) ND(ll) "D(lI) NO(II) "D(lI)

(io) "D (99) :'\10 (10) "D(9.7) ND(IO) :"JO (9.b) "D(95) ;\JD (9.9) >JD(II) "D(11) ND(II) "D(II)

(10) :--JD (9,9) "D(IO) "D(97) "D(lO) :-.JO tQ.6) "D (95) ND(9.9) \10(11) "D(lI) "D(II) NO(ll)

(10) ND(99) ND(IO) :"JD(9.7) ND(IO) ;\JO (9.6) ND(9.5) ND(9.9) ND(II) ND(II) "D(lI)

(lO) ND(99) NO (10) ND('1.7) ND(lO) ND(9.b) ND(Q.5) NO(QQ} ND(II) "D(II) \10 (II) ND(ll)

(lO) :">JD IY9) NO (10.1 ND(9.i! NDilO) NDIQ.o) :'-JD(9.5) NO (9.Q) ND(II) NO (.l11 :-..101111 NO(lll

(50) :-.10 (9.9) ND(IO) ND(97j ND(IU) NO (Q.6) :'\ID(9.5) NO (9.9) NO (11) :"J0(1l) ND(ll) NOP1)

(.lD) :'\10(9.9) "D(IU) "D(97) "D (10) :--JO (9.6) "D(9.5) "D (9.9) >JD(II) "D(II) "D(II) NO (11)

(10) "0(9.9) NO (10) "0(97) ND(IO) ;'\10 (9.b) :\ID{9S) "D (9.9) :-.J0(11) "D(l1) "0(11) NO 1.11)

(10) "0 (99) NO (10) :\ID(97) ND(IO) :"JO (9.b) "0 (95) "0 (9.9) \10(11) "0(11) ND(II) "D(lI)

(50) ND(50) ND('O) NO (49) NO (SO) NO(-lB) ND(-\.8) NO (50) "0 (53) NO (32) :'\J0(J2) :\ID(32)

ilO) ND(99) NO (10) ND(Q.7) NO (10) ND t9.h) NO (9.5) ;\JD(9.9) NO(1l) ND(ll) "D(III ND(lI)

(10) NO(~91 ND(IOI ND(O.7) NO(lU) NO (9.h) NO (9.5) NO (Q.Q) NOlll) ND(ll) NO(1I) NO ill)

(10) NO(99) ND(lO) "D(9.7) NO (10) NO (9.6) :"J0{9.5) NO (Q.Q) "0(11) ND(II) :-..10(11) "0(11)

(10) "D(9.9) "D(IO) "D(9.7) "0 (IU) NO (9.6) "D(9.5) :'\lO{9.9) "D(1I) "D(ll) "0(11) "0(11)

(10) ND(9.9) "D(IO) "D(9.7) "0(10) :--JO (9.6) "D (9.5) ND(9.9) >JD(II) ND(II) NO (11) "D(ll)

(10) NO (9.') ND (10) :'\lOiQ.7) NO(IO) "D (9.0) NO (9.5) :--JD (9.9) "D(II) "D(II) :'\10(11) "D(II)

(10) ND(9.9) "D (10) ND(9.7) ND(lO) NO (9.frl ND{Y.5j NO (9.9/ ,\lo(n} ND(ll) NOlll) NO (11)

(IO) NO(Y9) ND (10) NO (9.7) ND{lO) ND (96) NO (9.5) ND(':J.91 NO(11} NO(l11 NO(l1)

(10) NO(99) "0(10) NO (9.7) NO(llJ.l NO (9 b) NO (9.5) ND(9.9) NO (11) ND(ll) NOlll) ND(l1)

(10) :\10 (9'1) NO(IO) NO (9.7) "D(IO) NO (9.0) NO (95) "D (9.9) "D(l1) "0(11) "D(II) "D(II)

(10) ."D (9.9) "0(10) "0(9.7) :'\JD (10) NO (9.6) "0(9.5) ND(99) >JD(II) "o(il) "D(lI) "0(11)

(10) ND(9.9) "0(10) NO (9.7) :\10(20) "D (19) NO(19) "D(20) NO(21) :\10(21) "0('1) :'\10(21)

l50j NO 1.9.9) NO{IU.l NO (9.7) ND(lD) :-.l0 (Q.b) NO (9.5) NO(99) ND(lI) NOlll.l ND(1I) ND(II)

(lUI N[I (9.9) NO 00.) N'D (9.7) NO (10) NO (9.b) :-JD(9.5) ND(Q.QI NO (11) ND(lll :-..IO(ll) ND(ll)

(10) NDl9.9) ND(IO) :'\ID{Y.7) NO (10) NO (Q.b.l ND(9.5) ND{QQ) ND(l1) ND(ll) :-..ID(ll) NO(II)

(50) "D(10) ND(10) :\10(19) "0('0) "D(19)U) ND(19)U) NO ('0) NO(21) NO(II) NO(II) "D(II)

(10) "0 (99) NO (10) NO (9.7) ND(IO) NO (9.6) "0(9.5) "0 (9.9) :-m (11) NO(1I) :'\10(11) "0(11)

(10) "D (99) NO (10) "D(9.7) ND(IO) NO ('1.6) "0(95) "D (9.9) NO (11) "0(11) "D(ll) "0(11)

(10) ND(9.9) NO(lD) "D (9.7) ND(IO) NO (9.6) NO(95) "D (9.9) NO(II) ND(II) ND(ll) NO (11)

(\O) NO (9.9) ND(IO) NO (9.7) NDIlO) NOt9.6) ND(95) NOtQ·Q) :"J0(11) NO(1I) N[I(ll) ;\J°llll

(lO) NO(9~) NO(lO) NO (9.;') NO (10) NO (C,I.b) ND(9.5) ND 1.9.9} NO(ll) NO(11) ND(ll) NOt ll )

(10) "D (9.9) ND(IO) NO (9.7) "0(10) ND (9.0) ND{9.5) ND(9.9) NO (11) NO(1I) ND(1I) NO(ll)

(10) ND(9.9) "D (10) NO (9.7) NO (10) ;'\ID (9.6) "0 (9.5) NO (9.9) "0(11) ND(II) NO(1I) ND(II)

(10) :'\J0{9.9) "D(IO) "0(9.7) "0(10) NO (Q.b) "0(9.5) NO (9.9) "0(11) "D(ll) "0(11) "0(11)

(10) NO (9.9) "D (10) :\10(9.7) "0(10) NO (9.6) "D(9.5) NO (9.9) NO(II) "D(ll) "0(11) NO(lI)

(10) NO 1.9.9) . ND(IO) "D(9.7) NO (10) :-.JO (9.6.1 ND(9.5) NO (9.9) ND(II) NO{1l) ND(lI)

(Ill) NO (~J.~ll NO(IO) :'\IDl.4.7) ND(IO) :-.J0{Q.6) NOWS) NO {9.9j NO(ll) ND(II) NO{ll) ND(lI)

(10) NO (9.0) "D(IO) "D(9.7) "D (10) NO (Q.6) NOWSJ NO (9.9) NOlli) ,\iD(II) No(ll) ND(II)

(10) "0 (99) "D(IO) ND(9.7) "D (10) "D (9.6) "0(9.5) "D (9.9) NO (11) "0(11) "D(II) ND(II)

(10) ND(99) ND(IO) "D(97) ND{IO) NO (9.6) "0(9.5) ND(9.9) "D(II) "0(11) "D(II) "D(II)

(10) "D (99) NO (10) "D(97) ND(IO) :\10 (96) NO (9.5) :--.10 (9.9) "0(11) "0(11) "0(11) "0(11)

(501 NO (50) :'\ID(50) :\10(-\.9) NO (50) ND(4") ND(4") "D (50) "0 (53) ND(53) NO (53) "0 (53)

(10) N(1W91 NO(IO) ND(9.7) NO(lO} NO (96) NO (9.5) NO (Q.Q) ND(ll) NO(1l) NO(II) NO(l1)

IIU) NO (9.4) NO (10) NO (9.7) NO (lU) NO (9f» ND(Y.5) NO (9.9) ND(l1) ND(ll) NU(l1) ND(l1)

(10) :-.ID (9.9) :'\JD(IO) "D (0.7) NOt lO ) ND (9.b) NO (9.5) NO (Q.9) NO (11) "0(11) NOl,ll) ND(11)

(10) ND{9.9) "D(10) :"JO (9.7) "D(IO) NO (9.6) :'\10 (Q.5) .:\10 (Q.9) "D(II) "0(11) :-..10(.11) NO (II)

(10) "D(9.9) "0 (10) .:'\I°t9.7) "D (10) ;\JO t9.6) "0(9.5) :'\10 (9.9) "D(II) "D(lI) "D(II) "0(11)

(50) "D(50) NO (SlI) :'\10(49) :\10 (SO) "D (4S) N[I(-\.8) "0 (50) ;\JO (53) :"JD(32) "D(3') NO(J2)

(.10) NO (9.9) ND(TO) :-..10(9.7) ND(10) NO {9.6) :\lOWS) :'\IDl.94) ND(II) "D(II) :-..10(11) NO(11)

(lUI NO(~.'Jj ND(lU) NO (9.7) ND(1U) NO (4.bl NDW5j ;'\IDl':l'J) NOIII) :"JD{ll) NO(11) NO(lI)

(10) NO (9.9) NO(IO) NO (9.7) ND(IO) NO (Q.b) ;,\/0 {9.5) :'\10 {'J9) ND(II) "D(II) :\10(11) ND(lI)

(10) :-.l0 (9.9) ND(IO) :-..10(9.7) ND(IO) NO (9.6) ND{9.5) NO(99) NO (11) "D(II) NO(l1) "D(II)

(10) :-..10 (9.9) ND(IO) ND(9.7) "D(IO) "D (9.6) "0(95) :\10 (99) "D(II) "D(II) NO(11) "D(II)

(10) NO (9.4) "D (JO) NO {9.7j NO(IO) :-.lD (96) NO (9.5) ND{9 Q) :-..10(11) "0(11) NO (11) :\ID{ll)

(10) \10 (9.9) NO (101 ND(9.7) "D(IO) NO(9b) NO 1.9.5) ND (9.Q) :-..10(11) "0(11) :'\10(11) "D(ll)

(10) NO 1':1.9) NO (10) :-.JO (9.7) N[I (101 NO (.9 b) NO (4.5.) ND(Il.Q) NO(lli ND(ll) NOl.11) :\10(11)

(10) :-..ID (9.9) :'\10 (101 :-..IO (9.7) "0 (10) NO{9b) ;\J0(9.5) NO (9.9) NO(11) ND(l1) NOlll) :-..1"0(11)

(lUI "D(9.9) "D (10) "D(9.7) "0(10) NO(9b) "D(9.5) :\10 (9.9) "D(II) :'\10(11) :-..1"0(11) :-..1"0(11)

(10) "D(9.9) ND(IO) "D (9.7) "0 (10) :\10 (Q.6) "D (95) :\10 (Q.Q) "0(11) "0(11) :'\10(1) ND(l1)

(10) "D (9.9) :\ID (10) "D (9.7) "0(10) "D (9.6) "0 (95) NO (9.Q) "0(11) "0(11) "D(1I). ~D(ll)

(10) :--Jo t9.9) NO (10) "D(9.7) NO (10) "D (9.6) :-.lD (YS) NO(Q.4) NO(l1) "0(11) "D(lI) :\I°tll)

·(10) :-..10 (.9:9) :\ID (10) NO (9.7) NO (10) ND(9/;1) NDt9.5) :'\ID (9.9) ND(II) :-..ID{1l) "0(11) ND(ll)

(10) :-..10 (.9.4) ND{llJ) :-..IDl.9.7) ND(lOJ NO(9h) NDt~.5) ;\JD (Q.9) NO (11) :-..ID{ll) NO(ll) :\10(11)

(101 :-.IOl9.Ql NO flO) NDI971 NO(lOl NOf9.61 NOl9.51 NOf991 :-.Jonl) ;'\/01111 NO 1111 NOllll

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(101 :'\JD (9.Q) :-..10(10) :'\J0(9.7) ;,D (10) :\ID (Q6) ;\m (95) ;-.![1 (9.9) NOtl ]) ND{ll) NDIIl) ND(ll)

(10) :-.JO (9.9) >JD (10) >JD(9.7) NO (10) :...JD (4.0) >JD (95) ND(Q.9) >JD(II) \I[J(ll) >JD(Il) >JD(II)

(10) :...JO (Q.9) NO(lO) NO (Q.7) NO (10) NO t9.b) NO (Y.5) NO (9.Q) >JD(lI) :--.lO(ll) ND(11) :"1"0(11)

(10) NO (4.9) >JD (10) >JD(97) :\10 (tU) :-JO (.Q.IJ) NO (9.5) NO (9.Q) :...J0(11) >JD(II) >JD(ll) :...JD{ll)

(.10) ;'\JD (9.9) ND(10) ;"'10 (Q.7) :-JD (10) ND (~.h) ;'\.ID(Q5) NO (Y.4) ND(ll.) NO(ll) :...J0(11) NO(ll)

(10) NOWlJ; :...JD (lU) NO (Q.7) NDlllll ND(Q.o) NDI4':;) :'JO (4.4) ND(lll NDtll ) ND(lll ND{ll)

(101 ;...JD (9.~') :...JO {W} NO (Q.7) ND(1ll1 NOtQ·b ) :...J[I (95) ND (9.9) ND(lll NO(ll) ND(lI) ND{ll)

(10) :...JD (Q.9) :'-JO (10) NO (9.7) >JD (10) ND(Q.6) :-..10 (9.S) ND(9.9) ND(lll :\10(11) ND(II) ND(lI)

(10) NO (9.9) NO (10) :-..10 (Q.7) ND(IO) NO (Q.6) :\1[1(4.5) NO (Q.Q) ND(III >JD(ll) >JD(II) ND(ll)

(10) :...JD (9.9) ,\l0{l0) :"J0(97) :"JD(hJ) ;'\.10 (Q.61 :\10(9.5) NO (9.9) :...JD(ll) NO (11) ;\ID(II) ND(II)

(5U) NO(99) NO (10) :"JO (9 7) ND(lO) ND(Qh.l :\10(9.5) ND(9.~) NO(l1) ND(::!l) N[I{21} NOl.:!.l)

(IU) ND(99) ND (10) NO (47) ND(IOl NOIQh) :\I[l (95) NDlQ.Q) :\10(11) ND{ll) ND{lll NOlll)

\!O) NO ('J9) NO (10) ND(47) :-.JO(]U) :-..ID{Qf:» ;.JD(QS) ND(Q.Q) :\10(11) NO(ll) NDllll ND(ll)

(10) :-.JD(99) ND(lO) :-.lD(Q.7) ND(IO) ;.J0{9f:» >JD (0.5) NO (9.9) NO ill) NO(l1) :\10(11) NO(1}}

(10) :-.JDW'I) :-.JO (10) >JD(O.7) :-.JO{IO) ;...JD «6) >JD (0.5) :\10 (9.9) NO(11) :\10(11) :\10(11) NO(11)

(10) :-.JD (9.9) NO (10) :\ID{9.7) NO (10) :-.l0 (9b) :"JD(95) ND(9.9) >JD(lI) :\.ID (11) :-.lOfll) ND(lI)

(10) NO (9.'1) NO(lO) >JD(O.7) NO{lO) NO(96) ND(Q.51 NO(QQ) ;\jD(11) >JD(II) ND{ll) >JD(lI)

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Drlp/i'-llte Drll'licate D"plicrlte

'I NO(JOOO) ,'10(5IJ) NO(5IJ) ,\10(10) ND(25) ,'iD (250) ND(Wl ,\10(10) ,'10(50) .\JD{5.0) NO(lfJl I) ;\ill (1000) ,\10 (50) NO (50) ND{lO) ,\ID (25) NO (2.'iO) ND(10) NO (10) NO (50) ,\ID(5.0) NO(10) I) :-.JD{10(0) NO (50) ,\10 [50) NOnO) ,\10(25) NO (2.50) ND (10) ,\ID(lO) ND(50) NOi5.0) NO (1.0) I) ;\.10(101.10) ND(SO) NO [5U) ,\10(101 ,\ID (25) NO (2.50) NO (10) ND(10) NO (5U) NOi5.01 ,\10(1.0) I) NO (lUOU) ND (50) ND(50) 11 NO (2.51 ND(~liOI :\10 itO) NO (101 NO (.50.1 NO (5.0) ·\..O I) ND tlOOll) ND (50) N[I(:;U) ND (10) ND{2.5) ND(2.';I.l) :\1000) :-.JD(10) NO (.'ilJ) ND(5.0) NO(1.0) I} NDl.IOUO) NO (50) ND(5U) NDflll) ND (25) NO(~'iO) ND (lO) NO[IO} NO (5lJ) NO (5.0) NO (l.0)

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I) ;\JO(IUOO\ NO (50) NO (5lJ) NO(lO) NO [25) NO (250) NO (10) :"JO(iO) ND (50) NO (S.OI NO (1.0)

I} NO (1000) NDi50) ND (501. ,\10(10) ,\ID [25) NO (250.) NO{lO) ,\10(10) NO (50) ND(5.0) :\10(1.0) I) ,\ID(looo) ND(50) :\ID (50) "0(10) :"JD (25) ND [250) ND(IO) ,\ID [10) NO (50) ND (5.0) ;'\.10 (1.0) I) ,\ID(IOOO) ,\ID (50) ,\10(50) ,\10(10) :"JD (25) ,\10 (250) NO (10) ,\ID (10) ,\ID (50) ,\ID (5.0) NO (1.0) I) ,\ID (1000) ND[50) ,\10[50) ,\10 (10) NO (25) ,\ID (250) ,\ID (10) :-.JD (10) ,\10 (50) ,\ID (5.0) NO (1.0) I) ND (1000) ,\ID [50) ,\ID (50) ,\ID (10) NO (25) ,\ID (250) ,\10(10) NO (10) ,\10(50) ,\10(5.0) N[I(10) I) ,\ID (1000) ,\ID (50) ,\ID(5U) 100 NO (25) ;'\10 (250) ,\10(10) NO (10) ,\10 [50) NO (5.0) 19

I) ND (1000) NO (50) ,\ID (50) ND(10) NO [25) ,\10 (250) ,\10 (10) NO (10) ,\ID (50) NO (5.0) ,\ID(1.0) I) NO (1000) NO (50) NO (50) ,\10 (10) NO (25) NO (250) NO (10) ,\ID(10) ,\ID (50) ND(5.0) ND(1.U) I) ND(IOOO) NO (50) NO (50) ,\10 (10) :"JD(25) ND [250) ND(IO) NO (10) ND (50) ND (5.0) NO (1.0) I) NO (1000} :"J0(50) :-.l"D (50) ,\ID [10) :"J[l (25)" ND (250) ND(IO) :--JO (10) NO (SU) NO (S.O) NO(l.U) I) NO (1000) NO (50) NO (50) NO (10) NO (2.5) ND (250) :\IO(lO) ND(10) NO (50) NO (5.0) NO (1.0)

') ND (1000) NOt5Ul ND(su) NO(llJ) NO (25) ND(~O) NO{lO) :-.JD (10) NO (5U) NO (5.0) NO (1.0)

I, ND(llJOO) NDCSO) NO (50) ND(IO) ND(50.1 ND(500) NDf.ZU} NO ('0' NO (2Sl1) ND(25) ,\/[1(50)

I) i'-JD (lOUU.l NO (50} NO (50) :\10 (10) NOlL") NO (25U) NOllU) NOllO) ND(5lJ) NO (5.0j NO(1 U)

I' :-.JD (lOoo.l ND(50) NO (50) ND(lO) NO (50) NO [5001 NO (50) NO (50) ND (30) ND(2S) NOi5.0) I) ,\10 (1000) ND(50) ND(50) ,\10(10) N~(25) NO (250) ND(IO) NO[10) NO (50) NO (5.01 NO (I.U)

I) ,\10 (1000) ND (50) NO (50) ,\10(10) ND[25) NO (250) ND[IO) ,\10(10) NO (50) :'\l0 l.5.01 ND(1.0) I) ,\10 (1000, ND (SO) NO (50) ,\10(10) NO (50) ,\10 (500) ND(20) NO (20) ;'\.10 (250) :'\lO (25) NO (5.0) I) ,\10 [WOO) ND(SO) :-.JD (50) NO [10) NO (50) ,\ID (500) ,\10 (50) ,\ID [SO) ;'\.10 (250) NO (25) NO [5.0) I) ,\ID [WOO) ND(50) ,\10(50) ,\10 (10) ND(25) NO (250) ND(lO) ,\10(10) ,\ID (50) NO (5.0) NO (1.0)

I) ,\ID (1000) ND (50) ,\ID (50) ND(lO) NO (25) ND (250) ,\10(10) NO (10) ,\10(50) ND (5.0) NO(10) I) ND (1000) ,\ID (50) ,\ID (50) ND (10) ,\ID (25) ;'\10 (250) ,\10(10) ND(lO) ,\10(50) ,\10 (5.0) ND(lO) I) ND (1000) ,\ID (50) ,\ID (50) NO (10) ND (25) ;'\ID (250) ND{lO) NO (10) ,\10 (SO) NO (5.0) ,\ID(1.0) I) .NO (1000) ND (50) ,\ID (50) NO (10) NO (25) NO (2.50) ,\10 [10) ND(10) ,\10 (SO) NO (5.0) ,\ID(1.0) I) ;\JO (IOOO) NO (50) ND (5U) NO (10) NO [25) NO (250) ND(IO) NOPO) ,\ID (50) NO (5.0) ND(1.0)

oo 4000 4500 12000 6bOO 26000 1300 1200 11000 740 3700סס2I) NO (1000) NO (50) NO (50) ND(IO) NO (25) ND (250) NO (10) ND (10) ND [50) ND(5.0) ND(1.0) I) NO (lOOO} ND(50) ,\10 (50) ND[IO) ND(25) NO{~'iO) NO (10) ND (10) ND (50) NO (S.O) NO (1.0) I) NO (lUOO) NO (5Uj NO (50) ND(IO) ND(2.5) NO{~'iO) NO(lU) NO (10) NO (SU) NO (5.1I) ND l1.U) I) NO (lUOll) 110 110 J10 I 140 520 .'1 4[1 J4U 71 2JU I) ND (1000) ND [50) NO (5U) NOl.lO) NO (25.1 NO (250) V.I ND (10) ;\JD(10) NO (SU) NO (5.0) NO (1.0)

I) NO (1000) ND (50) ND(5U) 14 ND(25.1 NO (250) NO(IU) ND{IU) NO (SO) NO (5.0) 4.5 I) NO (1000) ND(50) NO (5lJ) ND (10) ND(25) NO (2S0) ;'\.10(10) ND(IO) ,\10(50) NO (5.0) NOll.O) I) NO (1000) ND(50) NO (50) ND (10) ND (25) ND (2S0) ND(10) NO (10) ND (50) ;'\.10 (S.O) NO (1.0)

I) :-.JD (1000) ND(50) ,\10 (50), ND (10) NO (25) ND (250) NOnO) NO(IO) ,\ID (50) NO [5.0) ,\ID(1.0) I) :-.Jo (1000) ND (50) ,\10 (50) ND(lO) ,\10 (25) NO (250) ,\ID (10) NO(lO) ,\ID (50) NO (5.0) ND(1.0)

I) :-.JO (1000) ND (50) ND (50) ,\10(10) ,\10(25) NO (250) ,\ID (IU) NO(lO) ,\ID (50) ND (5.0) ND(1.0)

I) ,\ID(IOOO) ,\10 (50) ND (50) ,\10(10) NO (25) ND (250) ,\ID(lO) ,\ID(10) ,\ID (50) ,\10 (5.0) ND(1.0)

I) ,\ID (1000) NO (50) NO (50) ,\10(10) ND(25) NO (2.50) ND (10) ND(10) ND(50) ,\10 (5 0) ND(1.0)

I) NO (1000) ND(50) NO (50) ND(IO) ND (25) NO (250) ,\ID (10) ND(IO) ND(50) ,\10(50) NO(10)

.1) :\10 (1000) ND(50) ND (50) ,\ID [10) :-.Jo (251 ND (250) ,\ID (10) ;'\.ID(lO) ND(SO) NO (5.0) ,\10[10) I) :\ID (1000) ND(50) ND(50) NO(10) ;'\.10 (25) NO (:'.50) NO (10) NO (10) ,\10(50) ND(5.0) NO(IO) I) :\10 tIOOO) ND(50) NO (SO) :\10 (10) :-.10 (L") NO (.250) ND(2U) :'-J0(20) NO [100) NO (10) ND (10) I) ;\JO (1000) NO (50) ;\JO l.50) ND(1O) ND(25) NO(.~O) :"J0(10) NO (10) ND (50) ND(5.0) NO(lO) I) ND(IOllO) ND(5U) NOl.50) 37 NO(25) . NO (250) NO(12)Vl 15 NO (5U) ND(S.OI fi.U I) ;\JO (lUOU) NO (5U) NO (50) NOllll) NO(25) ND(~lJ) ;\JD till) Ul NOl.lO) NDI5lJ) ND(5.l11 ND(5U) I) :"JD (1000) ND\5U.l NO (50) NOllOJ NO{:'.5) NO (25U) NO(IO) N0l.10) ND(5U) NOlS.l}) ND{l.O)

NO (25) NO (25U) NO(10) NO(lO) ND(5U) NOl.5.0) ND(1.U) :"JO (WOO) NOI.SO) NO (50) ,\10(10) NO(25) NO(~O) ND (10) ;-..10(10) ND (5U) NOt5J}) ND(50) NO (WOO) NO (5U) :\10 (50) ,\10(10) ;'\.ID (25) ND (3D) ND(IO) ;-..10 (10} NO (50) ND(5.0) ND (50) NO (1000) NO (50) ,\ID (50) ,\10(10) NO [25) ND (250) NO (10). NO (10) ND (SO) ;'\10 (5.0) ND(J.O) :\10 (1000) ,\10(50) ,\10 (50) 21 ,\10[25) ND (250) NO (10) ,\10(10) ,\ID (5U) ,\10 (5.0) 7.7 :\10 (1000) ,\ID [50) ND(50) ,\ID(lO) :"JD (25) ,\ID (250) ,\10 (10) ND (10) ,\ID (50) ,\10 (50) ,\10(1.0) NO (lOoo) ND(50) ,\ID (50) ,\10 (IU) ,\ID (25) ,\10 (250) ND(lO) ND(IO) ,\10 (50) ,\10 (5 0) ,\10(1.0) ND(looo) ND(50) ,\ID (50) NO (10) ,\ID (25) NO (250) ND(IO) NO(IO) ,\10 (50) ,\ID(5.0) ,\10(10) NO (1000) NO (50) ,\ID (50) - NO (25) NO (250.) ,\10 (10) ND(10) ,\ID [50) ND (5.0) 79 ,\10(1000) ,\ID (50) ,\ID (50) NO (10") NO (2.5) ;'\10 (250) ND(lO) ,\ID (10) N[I (50) ND (5.0) ND(10) ~(1000) NO (50) ,\ID (50) NO (10) NO [50) ;\JO (500) ND(20) ND (2O) NO (100) NO (10) 7'J0 (2.0) NO (1000) ;-..IDISO) ND(5UI NO(IO) NDl:'.5) NO (3ll) ND(IU) ,\ID (10) ,\ID (5U) :"JD (5.0) :\ID (1.U)

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"0 (10)· "0 (95) ND (9.0) "0(9.7) ;...JD (90) ;'\!o e:~.7) "D(l1)Uj "D(l1)lIJ :-.J0(1l) NO(ll) "0(11) NO (10) ND(9.S} :.JO (Q.o) NO (9.7) :-.JO (9.6) :\!D(Q7) "D(ll)Uj ND(11)UJ "D(ll) :\!0{1l:1 ;...JDI.II) "0 (10) NO ('lS) NDl9.6) 7\JD (9.7,) 7\JD (9.0) NO (9.7) ND{ll) ND(ll) "D(ll) ;...JOill) ND(ll) NOPO) NO (Q.5) NO (9.6) ;...JO{Q7) 010(9.0) :\10(9.7) ND(ll)UJ NO(ll)UJ "0(111 :\lO{11) NO (11)

:\ID (lU) NO (Q.5) 010(9';) NDl"!·7) NO(9h) :\l0(9.7) NO( 11 .1 ND{11) :-In(lll :\1001) :"JO(ll) :\10 ilU) ND(9.5) NDIQo) ;...JD\'I.7) ND(96) :\lD (9.7) NOill} ND(11) ND(ll) NO(ll) :"JD(l1) :\lD \10) NDlY~) NO {l/t'l) :\lD (9.7) ND(46) :\lO (Q 7) NO\llJ NOlll) ND(lll NOlII) :'\JDll11 ,'JOlI ll) ,'JDl"!~) NO{'1b) NDIQ.7) NO{4.h) :'\JO(97) ND(l1JU.1 NO{ll) UJ N[I(ll) :--.J°lll) ,'J0(l1) NO IIII I ND\4.5) NO {'1.6) Nfl (Q 7) NO (9.ti) :--JO {Q7) NOl1llUJ :\IO(11)UJ ND(lll :'\JD(ll) :'JD (101 NO\Q.5) :\10 (9.t'l) NO(97) NO (9.ti) ·NO (97) N0l.ll)UJ "D(ll)UI NO (11) ;,D(ll) NO(l1)

JI "D(IO)UI NO (9.5) :\10 (Q.h) ND (97) NO (9."') :\l0(9.7) NO (11) :--lD(ll) NO (11) "0(11) "0(11) JI "0 (lU)U) ~0{9.5) :--JO (!?o) ND(97) ND(96) :'\l0(q.7j :-.JO(ll) :--JD{II) :-.10(11) "0(11) "0 (11) JI "0 (10) U) "0 (95) :'JO (9.6) "0(97) :-.ID (96) NO (9.7) :-.JO(ll) N"D(ll) :--lD(Il) "0(11) "0(11) .II N[l (10) UJ "0(95) ND (9.11) ND(97) ND{9b) "D(9.7) "0(11) "0(11) :--lD(l1) ;-";0(11) "0(11) JI :'\lD (10) UJ "0(95) ;\JD(9.6) ND(97) ND{9h) "0(9.7) "0(11) ND(II) :--JD(ll) "0(11) "0(11)

;.,JLJ (50) ND(-It\) :-";D(-I8) ;'\10(-19) ;...JD(-I8) ;,\!D(-I9) :'\!O (53) "0 (54) ND(32) "D(3~) "0(:14) 'lD (10) :'\JO(Q.5) ND(9.6) "0(9.7) NO (9.0) :--JD (Q 7) "0 (11) UI :"lD(ll)UJ NO(Il) "0(11) "0(11) "0(10) :'\JD(9.5) NO (9.o) "0(9.7) NO (Q.6) "0(97) "0(11) :"J0{1l) ND(ll) ;...J0(l1) :'\JD(ll) "0 (10) :'\J0(9.5) :"JD (9.6) NO (9.7) ND(9.6) :--JD{Q7) "D(ll)UI :\IO(l1)UJ NO(ll) :"J0(l1) :'\JD(lI) NO (10) NO (9.5) NO (9.6) ND(9.7) NOi9.6) NO(97) ND(ll) NO(11) ND(l1) ND(l1) ND(l1)

JI :'JO (10) UJ NO ("'.5) :\10 (".6) NO (!?7.) :\10 (9.0) :'\JO (.97) "0(11) :\IO(1l} ND(ll) :'\lO(ll) :\10(11) NO (10) ~0(9.5) :\l0 ('1.6) ND(97) NO (9.h) :'\JD (9'7) NOII1)UI :\lOi11JUl ND(ll) "D(ll) NO(ll)

JI NO (10) LJ! ND(9.5) NO (9.6) ND(9.7) NO (Q.h) ND(97} ND(ll) :'\JO(llJ NO(11) NO (11] NOl.ll} ND(lll) NLJ 1~.S) .'\JD(9.t» NDl~7) ,'\J"[1\9.h) .'\J[119.7} :'\lD{lllUl NO Ill) UI NOt ll ) NDlll) ND(lO) NLJI9.5) NO (9.b) ND(Q7) NO (9.0) NO (9.7) :"JD{ll)Ul NDI.ll)UI ND(11) NO (11) ND(ll)

.II :--.10(10) UI NO (9.5) NO (9.t» ND(97) NO (9.0) NOl'l.7} ND(ll) ND(11) ND{ll) NO(lI) ND(ll) :-.JO (10) NO (Q.5) :--JD (9.b) ND(Q.7) NO (9.t'i) ND(9.7) "D(ll)U) "D(ll)UI NO(ll) NO (11) ND(ll)

.IJ :-.ID (10) UJ NO (9.5) "0 (9.b) NO{l9) NO (19) :'\l0(19) ND(") NO(~) "0(") ND(21) NO (2.3)

:-.JO (1O) :-.10 (Q.5) "0(9.6) "0(9.7) :'\ID (~.o) NO (9.7) "0(11) "0(11) :--lD(ll) ND(ll) :--lD(ll) :\ID (10) :-.ID{Q.5) "0 (9.h) :-.10(9.7) ND(9.0) "0(9.7) "0 (11) Uj ND(ll)U) NO(ll) ND(l1) ND(1l) "0(10) :-.10(9.5) ;...JD(Q.6) NO (Q.7) :"JD (9.6) NO (!?.7) "D(ll)Uj :--lD (11) U) "0(11) ND(ll) ND(l1)

J) NO (20) UJ NO(lQ) NO(19) ND(1Q) ND(19)UJ NO (19.1 "0 (") "0(:'2) "0(11) 'lD (11) "0(11) "0(10) :\10(9.5) :-.J0('1.6) "0(9.7) :-.JD(9.t'l) :--lD(9.7) "0(11) :-.JO(ll) "0(11) "0(11) "0(11) "0 (10) NO (9.5) :-.JO (9.6) NO {9.7} :"JO (9.6) "0(9.7) "0(11) :-.J0(1l) "0(11) ND(Il) "0(11) "0 (10) ND(9.5) ND(Q.6) ND(4.7) NO (!?6) NO (Q.7) "0(11) NO (11) NO (11) "0(11) NO(ll) "0 (10) ND(9.5) NO (Q.ti) "0(9.7) "D (9.h) ND(Q.7) "0(11) "0(11) NO (11) NO (11) NDl1l) "0 (10) ND(9S.) NO (9.6) NO (9.7) NO (9.6) ND(Q.7) :--JD(ll) :'\J°tll ) "0(11) NO (11) ND(Il)

"0 (10) ND(95) NO (4.6) NO (9.7) "0 (9.6) NO (Q.7) NDl.11)UI ND(ll)UI :"JD(ll) ND(ll) ND(ll) :-.JD{IUJ N[I(95) NO (Q.I» ND(9.71 NLJl,'i.b) NO (Q.7) NO(ll)UI NO(1l)U/ NO(ll) NO(ll) ND(ll)

J) ND(IOjUJ ND{'J~) ND {Q h) .'JD(9.7) NDl"h) NO (Q.7) ND(ll) NO(1l) ,'\JDO]) NO(ln ND(ll) NO flO) NOIQ.5) NO (9 I:l) ND(97J NO (9.6) NO(7) NO(ll) NO(ll) :'\J[' ill) ND(ll) NO (1])

NO (10) NO (Q.5) ND(9h) ND (9 7) ND(96) NO (4.7) ND(ll) NO(1]} "0(11) NO (11) ND(lO) NO (9.5) NT! (90) ND(97) ND(96) NO (4.7) ND(l1) ND(ll) ND(111 :-.10(11) ND(ll) NO (10) NO (9.5) ND(9t'l) ND(97) ND(9b) NO (9.7) ND(ll) ND(11) ND(ll) "0(11) "0(11) "0 (10) NO (9.5) NDI.9.6) NO (97) ND(9b) :'\l0{9.7) ND(11) "0(11) "0 (111 "0(11) NO(I]) NO (10) NO (9.5) ND{Q.6.1 "0(97) NO(90) i'J0(9.7) ND(11) i'J[1 (ll) NO (11) "0(11) "0(11) "0(10) ND(9.5) ND{(6) NO (97) ND{9.0) :'\l0(9.7) ND(ll) "0(11) "0(11) "0(11) ND(Il) :\10 (50) ~D(4~) "0 ('S) :\!O(-lQ) "0('") "0('9) NO (53) "0 (S4) "0 (53) "0(53) :'\J0{57} :\10 (10) NO (!?.5) :-.JD (Q.6) NO (97) ND(96) NO (9.7) "0(11) "0(11) "0(11) "0(11) :'\JO(ll)

"0(10) NO (Q.5) "0 (9.6) ND(97) ;\10 (9.0) :'\JO (9.7) "0(11) "0(11) "0(11) . :\l0(11) NO (11)

:\l0 ilO) ND(9.5) ND(9.h) NO (Q.7) NO (!?6) NO (9.7) ND{ll) "0 (11) NO (11) :\lD(1I) :"J0(11) NO{lO) NO (4.5) "0 (9.h) NO (Q.i) ND(9.6) ND{9.7) NO(1l) "0 (11) NO(ll} :\l0(11) :"JD(l1) NO (to) :'\JD(4.5) ;...JD (~.6) ND(9.7) ND(9.6) ND (9.7) NO(ll) "0(11) NDtll ) NO (11) :'\J0(11) ~O (50) NOl~!l) ND(4H) NO (49) NO(4H) NO(~9) NO (53) "0 (5') NO(J2) NO (32) NO (:14)

NO (to) NO \9.5) NO (IJ6j ND(IJ.7) NO (ll.h) NO (Q.7) . NO(ll) ;"m.(ll) NDl.ll) ND(11"l ND(l1"!

NO 110.1 ND\Q.5) ND('1. u) ND(4.7) ,'JO (~.h) ND(Q.;') NO(11) N[l Ill) ND(ll) NDlll) NDlllJ NOll0) ND\9.5) ND ('I 6) :'\JOl.'1.7) NO (lJ.o) NO 19.7) NO(11) NDl.1l) NO(ll) NO(ll) Nlllll) NO (to) NO (9.5) ND(Qb) N0l.().7) ND(9./'i) NO (9.7) :\l0(1l) "0(11) NO (11) ND(ll) NO 1.11) NO (10) NO (9.5) NOl.4.6) :'\JO('1.7) :"JD (9.h) NO (9.7) :"JD(ll) N[I(ll) Nll(ll) :\10(11) NO (11) ;\.10(10) NO (9.5) NO (4.h) NO (Q.7) ND(9.0) "0(9.7) "0(11) NO (11) NO (11.1 "0(11) N0l.ll) ;\10 (10) "0 (Q.5) ND{':I.6) :'\JD (9.7) :\ID(9.6) NOW?) "0(11) ;\ID(l1) "0(11) NOtll ) ND(ll) ;\.'D (10) NO (9.5) :'JO(9.ti) :\'0 (Q.7) :-.JO (9.6) ND(9.7) "D(ll) "0(11) "0(11) :'-J0(1l) "0(11) NO (to) "0 (9.5) :\'0 (Q 6) ;-.J"D (9.7) :\10 (Q.b) "0 (9.7) "0(11) . NO (11) "0(11) :--lD(ll) "0(11) :\10 (10) NO (9.5) :-.JD (9 b) "0 (9 7) "0 (9.6) NO (9.7) ;...J~(1l) "0(11) :-.JD(1l) ;...JD(ll) :-.J0(1l) "0(10) "D (9.5) :-.J0(Q6) :"JD(9.7) ;...JD (Q.6) :\10('1.7) "0(11) "0(11) NO(ll) ND(l1) "0(11) "0(10) "0(9.5) :-.10 ('1.b) "0 (9.7) NO (4.0) NOt9.7) "0(11) NO(II) NO (11) ND(l1) ND(ll) :\ID (]O) NO (9.5) ND(Q.h) ND(97) ND(9.ti) "0(9.7) "0(11) "D(ll) NO(ll) "0(11) "0(11) "0 (lU) ND(~.5) ND{Qti) :\ID(.97) :-JD(9.h) NDl,9.7) ;...JO(ll) :\10(11) ND(l1) NOtll ) :\IOl,ll) ND(lO) ND(".5) ND{'1t'l) ND(Y7) :-.JD (9 h) NO (':l.7) :--lD(ll)UJ ND(ll)UJ NO(ll) NO(ll) ND(ll) ~..JD nOl NOr451 ND(9.61 NDr971 ND{4tll NO 19.71 :'JD(lllUI ND(lIIUI ;-..J0111l NDlll) ND(lll

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NO (9.1;) NOri'·3) ND(l1) NO(11) "0(11) N01l1) NDiSJ) NO (9.9) :-J0(9.4) NO (.9.7)

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NO (00) UI ;\J0(19) ND(:!1) NO (11) "0(11) ;\JOfl1) NO (53) ;\JD(20) NO(19} NO (19)

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NDl.(I.8) NO {tJ.3) ND(ll) NO(11) NO(I1) NOfll) NO (53) NOW9} NO ('14.1 NO (9.7)

NO {<l.t'i) NO 1.(3) ND(l1) NO(ll) NOlll) NOlll) NO (53) NO (9.'Jl NO (9A.l NO (9.7)

NO (4.b) N01.<J.3) ND(l1) NO(ll) NO(l1) NOlll) NO (5J) NO (9.'JJ NO(941 NO (9.7)

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;\JO (9.8) NO (9.3) NO (11) NOlll) NO(l1) NO(II) NO (53) ND (9.9) NO 19.4.1 ;\10(9.7)

ND{4.8) NO (9.3) NO (11) NO(11) NO(ll) NO(11) NO (53) N~ (99) NO 194) NOl9.7)

NO (9.8) NOl.'J.3) ND(ll) NOf.ll) "0(11) NO(II) NO (SJ) NO (9.9) :"JO (94.1 NO (9.7)

:-JO (<1.8) NO(3) NO (11) NOI") "0(11) NO(ll) NO (SJ) NO (9.9) NO (94) :'-JD (9.7)

;\JO (<1.8) NO (9.3) NO(1I) i-.JD(ll) NOpl) NO (53) NO (9.9) NO (94) "0(9.7)

NO (9.8) NO (9.3) ND(ll) NO(l1) .NO(l1) NO(11) NO (53) NO (9.9) NO(~4) NO (9.7)

;\JO (9.8) NO (9.3) NO (11) NO (I I) NO(l1) NO(I1) NO (53) NO {9.9) NO 194) "0(9.7)

:-JO (9.8) NO (9.3) NO (11) NO(lI) NO (11) ;\JO(II) NO (53) NO(99) "0 (9.4) "0(9.7)

;\JO (9.8) NO ('::1.3) "0(11) NOIII) NO(II) ;\JD (I I) NO (53) NO(99) "0(9.4) ;\J0(9.7)

;\JO (9.8) "0 (9.3) NO (11) NOlll) NO (II) ;\JO(II) NO (53) ;\;10 (9.9) "0(9.4) .;\10(9.7)

NO (49) NO (46) "0 (53) ~0(S6) NO (54) NO (54) NO (260) NO (50) NO (47) NO (49)

;\JO (9.8) NO (9.3) "0(11) NO(lI) NO (11) ;\JO(II) NO (53) ND(99) "0(9.4) NO (9.7)

;\JO (Q.8) "0 (9.3) NO (11) NO(ll) NO(I1) ND(l1) NO (53) NO(99) NO (9.-1) NO (9.7)

:"JD (9.8) "0 (9.3) "0(11) NO(lI) NO(II) NO (11) NO (53) ~D{9.9) "0(9.4) NO (9.7)

;\JD (9.8) "0 (9.3) "0(11) NO(l1) NO (11) NO (11) NO (53) ;\;10 (9.Q) ;\JOl.9.-\.) NO (9.7)

;\JD (9.8) NO (9.3) NO(11) NO(lI) NO(11) NO(l1) "0 (53) ;\;10 (9.9) NO (9.4) "0(9.7)

:"JO(9) "0(40) "0 (53) NO(JJ) ;\IT) (33) ;\;ID (33) NO (160) NO (501 NO (47) NO (49)

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;\JD (9.S) "0 (9.3) :"J0(1l) NO(II) NDllI) 01D(l1) "0 (53) :"JD (9.9) ;\J0(9.-I) "019.7)

01 NO (9.3) 43 NO (11) 72 ,;" NO (53) ;\JO (9.9) NO (9.4) NO (9.7)

;\JO (9.8) NO (9.3) ND(ll) NO(II) ;\J0(11) NO (II) NO (53) 860) NO (9.4) :"JO(9.7)

NO (9.8) NO (9.3) ND(ll) NO (11) :-J0(11) ;\;ID(lJ) ND(SJ) NO (9.9) ;\J0(9.4) "0(9.7)

;\JD (9.8) NO (9.3) NO(11) ND{ll) ;\J0(11) NO (11) ND{SJ) NO (9.9) ;\J0(9.4) "0(9.7)

:-.JD (9.8) "0(9.3) NO(ll) NO(lI) ~0(11) NO (11) NO (53) ND (9.9) ;\J0(9..1) "0(9.7)

:"JO (9.8) NO (9.3) NO(lI) NO{ll) NO (11) ND(ll) NO (53) NO (9.9) 010(9.4) "0(9.7)

;\JO (9.8) ND(9.3) "0(11) NO(l1) NO (11) NO (11) NO 153) NO (9.9) ;'\10(9.-1) "0(9.7)

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NO (4.8) NO (9.3) "0(11) NO{ll) :-J0(1l) NO (11) "0(53) ;\JO (9.9) "0(9 4) :"JO{9.7)

NO (Y.8) "0(9.3) NO(11) 010(11) :-.J0(11) NO il I) "0(53) NDl9.9) ND(9-1) ND(97)

NO (4.8) NO (9.3) ;-.JO(II) ND(ll) "0(11) "0(11) NO (SJ) NO (9.9) ;\JD(9.-I) :\ID{9.7)

NO (Y.8) NO (9.3) :"JO(ll) NO(l1) "0(11) ND(ll) ~0(53) NO (9.9) NO(Q4} ND{97)

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NO (1.0) NO{IO) :"J0{1.l1) "0(1.0) NO (10) NO(I) ND(l) NO (5) NO{I) NO (1.0) NO (1.0)

NO (5.0) ND (5 0) NO (S.O) NO 15.0) NO (10) N0l.l.l ND{l) NO (5'1 NO 1.2) NO 1.2.0) NO 1.5.0)

NO (1.0) ND(lOI NO (1.0) NOll·O) ND(lOI >101. ' ) ND(I) ;\lO(S) NO(1) NO 1.1.0) NO (1.0)

NO (1.0) ND(l.O) NO(lO) ND(l.O) NO (10) "Oil) ND(l) ND(S) NO(I) NOlJ.O) ND(1.0)

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NO (1.0) NO (1.0) "0 (1.0) NO (1.0) NO{I) "0(1.0) >10 {I 0)

:'-JO(l.O) NO (1.0) NO (1.0) NO (5.0) ND(lO) >10(1) NO{I) >10(5) "0(1) NO (1.0) NO{IO)

NO (1.0) "0 (1.0) NDl.l.O) >10 (5.0) :'-JD(IO) >101.1) >10(1) >101.5) "0(1) :'\J0(1.0) NOli 0)

NO (1.0) :'-JO(l.O) "0(10) >10(10) NO(IO) :'\JO(l) >10 (I) >10(5) NO(1} NO (l.0) "0(1.0)

:'-JO(l.O) NO (1.0) NO (1.0) NO(1.0) NO (10) :\)0(1) :\IO{l) :'\IO(S) NO{II NO (l.0) NL) (1.0)

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ui;jl "p (15) :-10 (~.") ~D(9.g) :-ID(9.7) ~D(94) "0(11) :-10(11) :'\JD(ll) :-10(11)

u;;/I ,\lPfJS) AID I~.S) ,"0(9.5) .\lD(9.7) .\lD{4.Y) NO(JJ) ,'\1D(11) >mIll) :-IO(ll)

ug/l ;\lLJ (15) NDl9.8) "D (9.8) ~D(Q.7) :\ID(9.9) "0(11) ;..JO(1I) :'\J0(11) :-10(11)

ug/l ;\JLJ (15) ;..JD (9.8) "D (98) ND(9.7) :\10(9.9) "0(11) ND(ll) >m (11) ;-.l0(11)

ug/l ""(15) Nt' (CI.8) "0 (98) :-10('.7) :\ID(9.9) "D(li) :-IO(ll) :\ID(l1) ;-.l0(11)

ui;ft "D(15) ~,m(~.81 NO 1.98) :-10(9.7) ~O(9.9J ND(lI) :-IO(ll) NDnl) ND(l1)

ugj! N"\15\ NDWS\ 7'J0{9H) NDI::'.7J ND(9.91 NOfll) NDnl) ·NO(lI) "0(11)

ugjl NPllS) NDl.Y.8} ND(9M) NDW?) ND{9.9) ND(ll) NO(ll)

'ne) ugjl NP{l~.l :'\ID t9.~) NOICJH) NO ('1.7) NO (9.9) NDll11 ND(l1) NDtll) NTJ (11)

ugjl NOllS) NOt 9.8) ND(9R) "D 19.7) -ND(4.Q) ND(111 ND(ll) NOlll) NO 111)

ug/l NI...l (15) :'\IO(9.~) ND(Q.~) "D 19.7) NDl.Q.Q) ND(ll} NO(11) :\10(11) NO(lI)

ug/I NO 115) NO (9.8) NO (9.8) :\ID(9.7) ND{9.9) :\ID(1I) NO(11) ;'\J0(1l) NO(lI)

ugjl NI-1(15) :'\10 (9.8) NO (4.8) :-..JD(CI.7} ND(9.Q) ;'\JD(1I) ND(ll) NO (11) NO(lI)

ug/l ND(15) ND (9.S) NO (9.8) :-.JD{9.7) :\ID (9.9) "0(11) ND(ll) :'\J0(11) ND(II)

ug/l N"(75) ND(49) :-10 (49) ;-..10 (~9) NO (50) "0 (53) NO(J2) ND (31) ND(JJ)

ug/l NO (15) ND(Q.8) "0 (98) ND('.7) ND(4.4) "D(II) "0(11) :-10(11) ND(lI)

ugjl :-IP(lS) ND(9.8) :-10(98) :-ID('.7) ND('.') "D(II) :-10(11) .:-10(11) ND(lI)

ugjl NO (15) NO('.') :-10('8) :-ID(9.7) ;\10(9.9) ,"0(11) NO(lI) :-ID(II) ND(lI)

ugjl :-10(15) NO (9.8) ND(9./l) "0(9.7) ~0(9.9) "0(11) :-10(11) ND(lI) :-ID(lI)

ugjl :-10(15) ND (9.8) :-1019.8) "D(9.7) :-.lD (9.9) :-10(11) NO(lI) NO(l1) NO(I1)

ugjl NO (15) :'\10 (9.8) ;..JO (9.8) :\10(9.7) ND(9.9) "0(11) :-10(11) "D(II) NO (II)

ug/l :-10(15) :'\10 (9.S) NO (9.S) "D(9.7) :\ID(9.9) NO(lI) NO (11) :-ID(lI) NO (11)

.ug/l "0(15) ND(4.8) :'\ID (98) ND('.7) :\ID (9.9) "0(11) ND(II)

ug/l NO (15) NDl.9.S) ND(98) ND(9.7} :\10 (9.9) :-10(11) ND{l1) NO(1) "0(11)

ug/l "0(15) NO 1.9.8) NO I.Y 8) ND(.Q.7) NO \9.9) NO (11\ NO (111 .ND(ll} "0(11) . ug/I :'\JD(l5) ND(9.S) NO (98) NO.14.7) ;'\JO (9.9) ND(III NOlll) ND(II) ND(II)

ug/l ;'\JOt15) ND(9.8) NO "0) ;'\lD(19) ND(:::O) ND(21) "0(21) NO(21) "D(22)

ug/l :\lOllS) :'\ID(9.H) NO (~'81 NO (9.7) ND('J.9) ND(II) ;-.lO(lll NO(II) ND(II)

ug/l ND(15) :'\ID(CI,fI) NO ('-Ill) NO (Y.7) ND(4.9) ND(II) NL1(lll NO (11) NO(I1)

ugjl :-10(15) :'\IDW8) NO (41l) NO (9.7) ND(Q.9) ND(Il) :-10(11) NO{l1) NO(II)

01 ug/l :-10 (30) NO 1201 NO (20) NO (19) UI ;..JO (20) ND(11) :-10(11) NO(II) :-10(11)

ug/l :-10 (IS) :'\10 ("~.8) ND(9.8) "0 (9.7) ND(l:I.Y) NO (11) :-ID(II) NO{ll) :-ID(II)

he< ug/l NO(15) :-10 (9:') :-ID (9.8) :-10(97) NO (Q.q) "0(11) NO (11) :-10(11) :-ID(II)

ug/l :-10(15) NO (9.S) ND(98) :-10(9.7) NO (9.9) ,"D(lI) NO (11) :-10(11) ND(lI)

ug/! :-ID(15) NO (9.8) :-10 (9.8) :-10(97) :'\JO (Y.9) ND(II) :-10(11) :-10(11) ND(II)

her ug/l :-10(15) ;'\JD (9.S) :-10 (9.8) :-10(97) "0 (9.9) NO(lI) :-10(11) :-10(11) :-ID(lI)

ug/l "D(l5) :"JO (9.8) :-10 (9.8) NO (97) :-ID (9.9) ND(II) :-10(11) :-ID(lI) "0(11)

ug/! :-ID(15) :"JD (9.b) ND(9.8) ND{9.7) :-10 (9.9) :-ID(II) :-10(11) :-ID(lI) :-10(11)

ugjl ,'10(15) :"JD(Y.Il) "0 (9.8) :-10(9.7) ND(9.9) ND(II) :-10(11) :-10(11) :-10(11)

ugjl "D(l5) :"JD (Y.8) :'\lD(9/l) NO (9.7) :-ID(9.9) :-ID(II) :-10(11) ND(l1) :-10(11)

li11l' ug/l NO (1S.) ND(9.8) NO{9~) :-10(9.7) NO (9.9) NO (11) NO(l1)

ugjl NO (15) :"JO(Y8) NO(9H) ND{9.7) NO ('1.9) ND(ll) NO(ll) NO(1I) NO(l1)

ugjl NO (15) :'\10 (Y.8) NO (9A) NO (9.7) NO (9.Q) "0(11) :-10(11) NO(lI) NO(ll)

tlgjl NO (15) :'\10(9.8) NO (9.H) ND{9.7) ND(9.Q) NDlll) "0111) NO{lI) ND\11)

ugjl NOllS) :'\ID(Il'l) ND(Y.Hl ND (9.7) NO (9.9) ND(I!) NO(II) ND(II) NOII1)

ug/I NOrIS) NDl.'Jl'l) NO (9.H) NDW!.) NO (Y'l) NO(II) NO(II} NDill) NDt ll )

ug/l :'\10 (75) NO (-\.'J) NDH9) ND(49) :-10 (50) NO (SJ) NOt.5J) ND (53) NO (55)

ug/l ND(15) :'\JDl'lH) ND{9.!l) NO (9.7} :-JO (99) :\\0(11) ND(11l NO(ll) :-Io(il)

ug/I NO(IS) ND{9 H) NDt4.!l) :\10 (4.7) NO ('19) :\\0(11) NO(Il) :\IDOl) ;\10(11)

ug/l :\lD(IS) NDl911,) ND\9.8) NDt<;l·7) NO <9Cl) NO (11) ND(lI\ :\I°lll) ;'\l0(1l)

ug/l :\10 (IS) ND{ClB) ND(Q.8) :\10(9.7) ND(Q.9) NOll]) NO (11) :-ID(II) :-ID(II)

ug/l N0 (15) :-10 (9.8) ND(9.8) :'\1[1 (l:I.7) ND(9.9) :-10(11) :-10(11) NO(Il) :-10(11}

ugjl "D (75) ;\.10(49) :-ID (49) ;-..10 (-\.CJ) "0 (50) ND{5.3) :\ID(32) "01.32) :-IO(J3)

ugjl "D(15) . :-10 (9.8) :'\JO ('IS) ND{9.7) :\10 (9.9) :-10(11) :-ID(II) "0(11) :-10(11)

ugjl ;'\JD(lS) :-10 (9.8) "D(98) :-10(9.7) ND(9.9) :-10(111 ND(11) "0(11) :-10(11)

'-IgJ\ ~O(15) NO\Q.8) ~~O 198) "0('.7) ND(9.9) :-m(H) "0(\\) ).10 (11) :-10 (11)

'-Ig/l N[>(15) ;\l0 (9.8) ND(98) ;'\lD{~.7) NO (9.9) "D(II) ND(II) :-10(11) :-10(11)

~g/I ,"[>(15) .\,'D/.q.8) ~0(98) :-"lD{~.7) :-"'0 (9. Q) ,"0(11) :-1['(11) :-"lD{ll.l ,",D(lI)

~g/l :-I D (15) ;\lD (9.8) :-10 ('") ND{~.7) ND(9.Q) NO(II) :-ID(II) :'\ID(1l) "0(11)

~g/l ~0(15) ;\lDW8) ND(98) :--JD (9.7) NDt9.CI) "0(11) "D(II) :'\10(11) NO (11)

~g/l. NO(15) ND(9.Hl ND(9.8) ND 19.7) ND(CI.9) NO(I!) ND(ll) NO(11) ND(II)

lI b/l NO (15) ND(9.H} ND(9.8) i\lO (~.7) ND(Q.Q) NO(l1} ND(ll) :'\J0{1l) NOp1)

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lIMI ND(15) ND(9.8) NO (4.H) NO (9.7) ND{~.9) NDil]) ND(l1) ND(II) NO(II)

~g/l :-lOllS) :'\10 (9.S) ND(9.8) ND(Q.7) NO {9.9) NO(\l) ND(III :-ID(II) NO(II)

1.Ic:/1 ;\JD(I.51 ~019.S' :\\0 (4S) NO/Y7) NDrqy) NDlln NDl1l) :-.loon NDnn

Third Five-Year Review Jac!co-Hughes

Belmol1/. Gas/oil Coull/Y. NC

ATTACHMENT 6 Declaration of Perpetual Land Use Restrictions

DECLARATION OF PERPETUAL LAND USE RESTRICTIONS FOR THE JADCO-HlfGHES SUPERFUND SITE, 730 CASON STREET, GASTON

COUNTY, NORTH CAROLINA

JADCOlHughes Superfund Site, North Belmont, Gaston County, North Carolina

The real property which is the subject of this Declaration of Perpetual Land Use Restrictions C'Declaration") is described in Exhibit A attached hereto and is located at 730 Cason Street,Gaston County, North Carolina. The real property described in Exhibit A is contaminated with hazardous substances and has been designated as the Jadco-Hughes Superfund Site (hereinafter referred to as the "Site").. The Site is listed on the National Priorities List issued by the United States Environmental Protection Agency ("EPA") pursuant to the provisions of § 105 of the Comprehensive .Environmental Response, Compensation and Liability Act, as amended ("CERCLA"), 42 U.S.c. §9605. The Jadco-Hughes Site is subject to the Unilateral Order for Remedial Design/Remedial Action Response Activities, U.S. EPA, Region IV CERCLA Docket No. 91-31-C (the "Order"). This Declaration is part of a remedial action plan for the Site that is . identified in the Federal Record of Decision and any amendments thereto ("ROD") and that has been approved by the Secretary of the North Carolina Department of Environment and Natural Resources (or its successor in function), or hislher delegate, as authorized by N.C.G.S. Section 143B279.9. The North Carolina Department of Environment and Natural Resources shall hereinafter be referred to as "DENR."

.The heirs of W.E. Fite ("Landowners") are the owners in fee simple of the Site, which is located at 730 Cason Street, North Belmont, Gaston County, North Carolina. The Site is a portion of

. the real property legally described in Deed Book 0150, Page 0502 in the Office of the Register of Deeds for Gaston County. The Site is also shown on a Notice of Contaminated Site, constituting a survey plat that is concurrently being recorded with this Declaration in the Office of the Register of Deeds for Gaston County. A copy of said survey plat showing the Site is attached hereto as Exhibit B.

For the purpose of protecting public health and the environment, Landowners hereby declare that all of the Site shall be held, sold and conveyed subject to the following perpetual land use restrictions, which shall run with the land; shall be binding on all parties having any right, title Of interest in the Site or any part thereof, their heirs, successors and assigns; and shall, . as provided in N.C.G.S. Section 143B-279.9, be enforceable without regard to lack of privity of estate or contract, lack of benefit to particular land, or lack of any property interest in particular land. These restrictions shall continue in perpetuity and cannot be amended or canceled unless and until the Gaston County Register of Deeds receives and records the written concurrence of the Secretary of DENR (or its successor in function), or his/her delegate. Such concurrence shall be granted upon achievement of the cleanup standards set forth in Tables 13 and 14 of the ROD and as measured in accordance with the Scope of Work that is part of the Order (the "Cleanup Standards"); and upon such concurrence, this Declaration shall be thereafter null, void, and of no effect whatsoever.

If any provision of this Declaration is found to be unenforceable in any respect, the validity, legality, and enforceability of the remaining provisions shall not in any way be affected or impaired.

It is the intention of Landowners and ·DENR that, to the extent allowed by law, the United States Environmental Protection Agency, Region 4 (EPA), is a third party beneficiary of the Declaration, and, as such, has the authority to enforce these restrictions, to the extent such enforcement is allowed by law. It is expressly agreed that EPA is not the recipient of a real property interest under this Declaration.

PERPETUAL LAND USE RESTRICTIONS

1. Groundwater beneath the boundaries of the property (as depicted in Exhibit A) may not be used for any purpose save and except the operation of the remediation systems on the property. No groundwater well or other device for access to groundwater for any purpose other than monitoring groundwater quality shall be installed or operated on the site

2. The Site shall only ·be used for industrial or commercial purposes. No residential, educational and/or agricultural use of the Site is allowed. Residential and educational use may be allowed if there is no exposure to contaminants at concentrations greater than DENR residential standards such as with high density developments, e.g., condominiums or apartments, and the use restriction is modified in accordance with the terms of this Declaration. No trees shall be planted within ten (10) feet of the drainage culvert or within the area of the engineered cap or within the confines of the spillway as depicted in Exhibit A.

3. On-site engineering controls, including any engineered covers, drainage culverts, buildings, concrete slabs, fences, extraction wells, piping and collection systems, and pavement on the property, as identified in ExhibitA, shall be maintained. Should future development require the disturbance ofon-site engineering controls, this restriction may only be modified in accordance with the terms of this Declaration.

4. The Landowners shall record this Declaration in the Gaston County Register ofDeeds and shall comply with the Land Use Restrictions set forth in this Declaration.

5. The Landowners hereby grant to DENR, EPA and Respondents listed in the Order, and their successors, assigns and other authorized agents (Grantees), an irrevocable, permanent and continuing right of access at all reasonable times to the Site for purposes of 1) implementing the response actions in the ROD; 2) verifying any data or information submitted to Grantees; 3) verifying that no action is being taken on the Site in violation of the terms of this Declararion or of any federal or state environmental laws or regulations; 4) monitoring response actions on the Site and conducting investigations relating to contamination on or near the Site, including without limitation, sampling of air, water, sediments, soils; and 5) conducting periodic reviews of the remedial action, including but not limited to review required by applicable statutes and/or regulations.

6. The Landowners shall cause any lease, grant, or other transfer of any interest in the

-2

property to include a provision expressly requiring the lessee, grantee, or transferee to comply with this Declaration. The failure to include such provision shall not affect the validity or applicability of any land use restriction in this Declaration.

7. The Landowners may submit a written request to the Secretary ofDENR for modification or cancellation of these restrictions. DENR shall concur with such modification or cancellation upon achievement of the Cleanup Standards and shall submit such written concurrence to the Gaston County Register of Deeds. The Landowners must provide written notification to EPA of the request for modification or cancellation of the restrictions at the same time the request is submitted to DENR.

REPRESENTA'FIONS AND WARRANTIJES

The Landowners hereby represent and WaITant to the other signatories hereto:

that the Landowners hold fee simple title to the property which is described in Exhibit A;

that the Landowners have the power and authority to enter into this Declaration, to grant the rights and interests herein provided and to carry out all obligations hereunder;

that the Landowners hold fee simple title and that no other person owns an interest in or an encumbrance on the property; and

that this Declaration will not materially violate or contravene or constitute a material default under any other agreement, document or instrument to which the Landowners are party or by which the Landowners may be bound or affected.

EN fO RCEMJENT

The land use restrictions set forth in this Declaration are an integral part of the remedy for the contamination at the Site. Adherence to the restrictions is necessary to protect public health and the environment. These land use restrictions shall be enforced by any owner, operator or other party legally responsible for any part of the Site. The land use restrictions may also be enforced by DENR through the remedies provided by any provision oflaw that is implemented or enforced by DENR or by means of a civil action, and may also be enforced by any unit of local government having jurisdiction over any part of the Site, and by EPA to the extent allowed by law. Any attempt to cancel this Declaration without the prior written approval of DENR or its successor in function shall constitute noncompliance with EPA's Record of Decision for the Site, which has been approved by DENR, and shall be subject to enforcement by DENR and/or, to the extent allowed by law, by EPA. The failure by any party required or authorized to enforce any of the land use restrictions or provisions of this Declaration shall in no event be deemed a waiver of the right to enforce the same or any other restriction or provision thereafter.

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FUTURE SALES, LEASES, CONVEYANCES AND TRANSFERS

When any portion of the Site is sold, leased, conveyed or transferred, pursuant to N.C.G.S. Section 143B-279.10(e), the deed or other instrument of transfer shall contain in the description section, in no smaller type than that used in the body of the deed or instrument, a statement that the real property being sold, leased, conveyed, or transferred is a Contaminated Site, together with a reference by book and page to the recordation of the Notice of Contaminated Site referenced in this Declaration.

MODIFICATION OR CANCELLATION OF NOTICE OF CONTAMINATED SITE

The Landowners may also submit a Written request to the Secretary of DENR for modification or cancellation of the Notice of Contaminated Site ("survey plat"). DENR will concur with such request for modification or cancellation if DENR determines, based upon a showing by the Landowners and documented in the administrative record for the Site, that the modification is justified and protective of health and the environment. DENR will concur with such request for cancellation if DENR detelmines, based upon a showing by the owner, that the contamination at the Site has been eliminated or remediated to unrestricted use standards pursuant to N.C.G.S. Section 143B-279.10(f). The Landowners must provide written notification to EPA of the request for modification or cancellation of the survey plat at the same time the request is submitted to DENR.

LANDOWNERS' SIGNATURES

"LJ., fN WITNESS WHEREOF, the heirs of W. E. Fite have executed this Declaration on thisW 'Clay of J'v { ,20 I_f. lJ-f:.,./. have executed thi-s-Declaratio solely to subordinate any right, title, or interest either of them may have in or to the Site to this Declaration, including but not limited to any rights to the Site under N.C. Gen. Stat. Sec. 29-30.

[SIGNATURES ON FOLLOWING PAGE]

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Signatory's name typed or printed:

~ It LU L-J r;i-.er \)jU,

Signature: ,(~ 4 £J{ /l,7' . /7-

STATE OF-N~~tl=-COUNTYOF C\t\~

~ I, Li ndi, L LDrqn§f--'>f---'-.I""" ,~ohn L \=-" \e. ,,)(2..,

,a Notary Public, do hereby certify that personally appeared before me this day and

signed this Declaration.

WITNESS my hand and official seal thi~1-O day of~uL


~ ,l=JJe ~'Iey Signature:'!}aA«.2 ;1£,

STATE OF NORTH CAROLfNA

COUNTY OF Ck~W

I, M tJ·~ ' a Notary Public, do hereby certify that __h,--"~=~~,--_F~-kIJO.---,6N......,e:;:>d.·,,,"b~.I personally appeared before me this day and signed this Declaration. !

WITNESS my hand and official seal this t7/1taay of :::s-ui'e- , 201_'.

#iff(~~ otary PublIc

My Commission expires: My CommissJcn [ExpIres Sep2 2015

","".11'""' CI.AR.l.oo~""

~ I:J .. ~ , ~ ~ ~~ 0";.::~ ~ ~-:......-0 .."

;:i ~ " ~E -:. ~~:: ." - O;:s~"~"? C; ....' . '"/~lA~O \""

"'1018"\\\


Signature: ~ a~ ~

STATE OF NOR!~ CAROlJNA COUNTYOF~L~~~~~l~)~~~ _

/} I~'tJ.~ , a Notary Public, do hereby certify that {.L~ , It .. ----=---.----p-ersonaJly appeared before me this day and

sign~hiSDeClafati(;n"

WITNESS my hand and official sea~1h;J1J

1/" /' ~~11C My COl((wJ~~ion expires:3 e)8

",,\ "'" -,+--/1--,+---. "~~ L. Po "~ l:S'~ 't( ''-;.

... ~ TA ,. .,1': , ~ ~( ~o orvr; ~~ ~- , = ~... I = \~~, ~L\C; ~C!J ~,:~...........~,~~

"'1"I""",,,\'il cou~' ~""


When any portion of the Site is sold, leased, conveyed or transferred, pursuant to N.C.G.S. Section 143B-279.1 O(e), the deed or other instrument of transfer shall contain in the .description section, in no smaller type than that used in the body of the deed or instrument, a statement that the real property being sold, leased, conveyed, or transferred is a Contaminated Site, together with a reference by book and page to the recordation of the Notice of Contaminated Site referenced in this Declaration.


The Landowners may also submit a written request to the Secretary of DENR for modification or cancellation of the Notice of Contaminated Site ("survey plat"). DENR will concur with such request for modification or cancellation if DENR determines, based upon a showing by the Landowners and documented in the administrative record for the Site, that the modification is justified and protective of health and the environment. DENR will concur with such request for cancellation if DENR determines, based upon a showing by the owner, that the contamination at the Site has been eliminated or remediated to unrestricted use standards pursuant to N.C.G.S. Section 143B-279.10(f). The Landowners must provide written notification to EPA of the request for modification or cancellation of the survey plat at the same time the request is submitted to DENR.


IN WITNESS WHEREOF, the heirs ofW. E. Fite have executed this Declaration on this~ itJ~y of ~uV\'f ",201_'_. Ssr--a-l'1l"l 'F/f-e- S'e..v-erz have executed this Declaration solely to subordinate any right, title, or interest either of them may have in or to the Site to this Declaration, including but not limited to any rights to the Site under N.C. Gen. Stat. Sec. 29-30.


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STATE OF NORTH CAROLI1)TA COUNTY OF G--u.-[ ~,d

I, L~u U' ~'"€...- A- bcu..; VV\ !:tV"' , a Notary Public, do hereby certify that _S_O\_r-_a...--=-..;;\....;~j--!n...L.-.-:F--:..-,'t~e..--:::.-......S2-~~V..::-e.::...:,----:::::5~ personally appeared before.me this day and signed this lJeclaratlOn.

Notary Public

My Commission expires:!12C) v eA'Y\.1o er 18j ;::<'0JY [SEAL]

LAURIE ABOWMAN NOTARY PUBLIC

ROCKINGHAM COUNTY NORTH CAROLINA

MY COMMISSION EXPIRES NOV. 18, 20~


When any portion of the Site is sold, leased, conveyed or transferred, pursuant to N.C.G.S. Section 143B-279.10(e), the deed or other instrument of transfer shall contain in the description section, in no smaller type than that used in the body of the deed or instrument, a statement that the real property being sold, leased, conveyed, or transferred is a Contaminated Site, together with a reference by book and page to the recordation of the Notice ofContaminated Site referenced in this Declaration.


The Landowners may also submit a written request to the Secretary of DENR for modification or cancellation of the Notice of Contaminated Site ("survey plat"). DENR will concurwith such request for modification or cancellation if DENR determines, based upon a showing by the Landowners and documented in the administrative record for the Site, that the modification is justified and protective of health and the environment. DENR will concur with such request for cancellation if DENR determines, based upon a showing by the owner, that the contamination at the Site has been eliminated or remediated to unrestricted use standards pursuant to N.C.G.S. Section 143B-279.1O(f). The Landowners must provide written notification to EPA of the request for modification or cancellation of the survey plat at the same time the request is submitted to DENR. .


fN WITNESS WHEREOF, the heirs ofW. E. Fite have executed this Declaration on this /3 day Of~' 20lL. Jff~e.;;* lJ1c;ot::e- have executedthi-s-Oed atio solely to subordinate any right, title, or interest either of them may have in or to the Site 0 this Declaration, including but not limited to a.ny rights to the Site under N.C. Gen. Stat. Sec. 29-30.


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Signature: ~~ d)4L ~

STATE OF NORTH CAROLINA COUNTY OF C~/;p?f-

I, -..:..-....:..~..:.-{)_·_L-r:'_, J_-=l:.--'_uJ__h_,l_ff ,a Notary Public, do hereby certify that _...:::::r~A-~n:...L.r_..LF......;....,~.!..:.fe-=____!/'VlP-vr._=...!:::....:.re......-_~ personaIly appeared before me this day and sig~~d this Declaration.

_WITNESS my hand and official seal this I ~ day of :r'<. '1 ,20 1~.

Notary Public My Commission expires: -.J1Jl.~-~g-_~_h_~J1~__

[SEAL]

Third Five-Year Review Report Jadco-Hughes Site Belmont ...Third Five-Ycar Review Jadco-Hughes...

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