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Home My WebLink AboutNCS000310_OTHER_19991130STORMWATER DIVISION CODING SHEET PERMIT NO. PCS DM �N D DOC TYPE ❑FINAL PERMIT ❑ MONITORING INFO ❑ APPLICATION ❑ COMPLIANCE "� OTHER DOC DATE ❑ l 6k�a 9 << YYYYMMDD Division of Water Quality 1617 Mail Service Center Raleigh, North Carolina 27699-1617 Work: 919-733-5083 Fax. 919-733-0719 To:' l `T Q I Fax: From: Date: Re: Pages: L� (including cover sheet) CC: ❑ Urgent ❑ For Review ❑ Please Comment ❑ Please Reply ❑ Please Recycle li/tom sT ar�s\i�, DECISION FACT SH11T 5 Operable Unit #1-Soil Region 4 N� fl' : BATTERY TECH SITE d N �SpUR ' October 199 Lexington, North Carolina On Tuesday, September 301, Mr. Dick Green, EPA Region 4 Waste Management Division Director signed the Record of Decision document selecting the method which will be implemented to treat contaminated soil at the Duracell/Battery Tech Site. In order to handle remediation of the Site more effectively activities have been divided into two Operable Units for manageability: soil investigation/ treatment is being conducted as Operable Unit #l, and groundwater investigation/treatment will be conducted as Operable Unit #2. BRIEF SITE HISTORY The Duracell site is located at 305 New Highway 64 East in Lexington. The 26.5+/- acre Site is an active facility that began operating in the 1950's. The various owners/operators of the Site manufactured mercuric oxide batteries, as well as dry cells for commercial and industrial use. Over the years several plant operations have been added to the Site expanding production. There were eight potential areas of concern that were characterized by collecting and analyzing samples. Those areas are: • the former Plant #2 area; • former solvent disposal area; • sump area north of Building #4; • former cleaning operation area; • former underground storage tank (UST) area; • northern Site area; and • the southern Site area. The various contaminants of concern resulting from battery production at the Site are: -> mercury i manganese polychlorinated biphenyls (PCBs) -; toluene -► xylene -� volatile organic compounds (VOCs) DESCRIPTION OF SELECTED REMEDY The selected remedy in the Record of Decision for Operable Unit #1 addressing soil (see Site map) consists of the following activities: ► in -situ stabilization and solidification of contaminated soil in the former Plant #2 area, then cap this area with impervious layers; ► in -situ chemical oxidation of contaminated soil in the former solvent disposal area, followed by capping this area; ► excavation and disposal of contaminated soil in selected areas in the Building#4 area, the northern site area, and soil and sediment in specific areas outside the facility fence line; ► place a cap on other areas located within the facility fence line for ecological concerns; ► long-term monitoring of site -related contamination. The selected remedy is protective of human health and the environment; complies with Federal and State regulatory requirements; is cost-effective; utilizes permanent solutions and treatment technologies; is acceptable to the. State and the public based upon comments received; and based upon all technical data developed during the Remedial Investigation and Feasibility Study (RI/FS) is considered the best blend of technologies to use to treat the contaminants in the soil at the Duracell/Battery Tech Site. DEFINITION OF TREATMENT PROCESSES Capping - Capping technologies are generally used to place a barrier between the land surface and the contaminants of concern. These technologies include temporary and permanent covers, single - layered caps and multi -layered capping systems. Native soil caps include a layer of native soil material that may or may not be compacted to minimize moisture seeping through the barrier. Single layered caps utilize a layer of clay, synthetic membranes, asphalt or concrete to prevent direct contact and reduce infiltration. Multi -layered caps use a system of low and high permeable layers to manage infiltration and prevent contact. A drainage system will be installed to handle any rainfall or run-off, and the cap would be designed to ensure proper run-off. Chemical Oxidation - The area to be treated would have chemical oxidants applied into the soil in order to either destroy or degrade the contaminants of concern converting them into harmless compounds that are commonly found in nature. The oxidants applied in this process are typically hydrogen peroxide, potassium permanganate, ozone, or to a lesser extent, dissolved oxygen. This process historically takes months instead of years to implement. A treatability study will be conducted to determine the effectiveness of this treatment in accomplishing its purpose. If it does not perform as anticipated, another technology will have to be implemented. Excavation - Digging to various depths to remove contaminated soils in specific areas. The soils would be transported off Site for disposal in an approved landfiWsite for treatment and/or disposal. Long-term Monitoring - Used to assess the effectiveness of the selected treatment process.It'can,also be,usedab determine if rther action is warranted;'or if closure can be obtained. Monitoring can include both ! `chemical sampling! and physical _ surveillance. Solidification/Stabilization - This technology is a system of stabilizing and solidifying contaminants of concern in the soils so that they are trapped and become immobile. This technology is performed by using standard earthmoving equipment (i.e., trackhoes, backhoes, drag lines, or large - diameter augers) to inject substances (i.e., cement, kiln dust, lime) into the soil to solidify the contaminants in the soil to keep contaminants from moving. Treatabihty tests witl be conducted to determine that this technology will accomplish its purpose; if not, another technology wiU have to be implemented. During the excavation process, the control of storm water run-on and run-off will be needed. Soil and erosion controls will need to be implemented, i.e., silt fences, sediment basins, erosion blankets and rip -rap. Dust and vapor suppression will also need to be in place during excavation. Many, many aspects of the remedies to be utilized in cleaning up the soil at the Site will be designed during the Remedial Design phase which is the next step of the Superfund process. For more details about the selected treatment processes see the July 1999 Feasibility Study Report located in the Information Repository. Now that the Record of Decision has been signed, EPA and Duracell/Battery Tech will negotiate the remaining steps of the process to determine who will pay for and conduct the cleanup of soils at the Site. -2- a DEFINNITION OF TREATMENT PROCESSES Capping - Capping technologies are generally used to place a barrier between the land surface and the contaminants of concern. These technologies include temporary and permanent covers, single - layered caps and multi -layered capping systems. Native soil caps include a layer of native soil material that may or may not be compacted to minimize moisture seeping through the barrier. Single layered caps utilize a layer of clay, synthetic membranes, asphalt or concrete to prevent direct contact and reduce infiltration. Multi -layered caps use a system of low and high permeable layers to manage infiltration and prevent contact. A drainage system will be installed to handle any rainfall or run-off, and the cap would be designed to ensure proper run-off. Chemical Oxidation - The area to be treated would have chemical oxidants applied into the soil in order to either destroy or degrade the contaminants -of concern converting them into harmless compounds that are commonly found in nature. The oxidants applied in this process are typically hydrogen peroxide, potassium permanganate, ozone, or to a lesser extent, dissolved oxygen. This process historically takes months instead of years to implement. A treatability study will be conducted to determine the effectiveness ofthis treatment in accomplishing its purpose. If it does not perform as anticipated, another technology will have to be implemented. Excavation - Digging to various depths to remove contaminated soils in specific areas. The soils would be transported off Site for disposal in an approved landfill/site for treatment and/or disposal. Long-term Monitoring - Used to assess the effectiveness of the selected treatment r' process. It can`alsd be'used.tb determine if ..further action is warranted, or if closure can be obtained. Monitoring can include both chemical sampling and physical surveillance. Solidification/Stabilization - This technology is a system of stabilizing and solidifying contaminants of concern in the soils so that they are trapped and become immobile. This technology is performed by using standard earthmoving equipment (i.e., trackhoes, backhoes, drag lines, or large - diameter augers) to inject substances (i.e., cement, kiln dust, lime) into the soil to solidify the contaminants in the soil to keep contaminants from moving. Treatability tests will be conducted to determine that this technology will accomplish its purpose; if not, another technology will have to be implemented. During the excavation process, the control of storm water run-on and run-off will be needed. Soil and erosion controls will need to be implemented, i.e., silt fences, sediment basins, erosion blankets and rip -rap. Dust and vapor suppression will also need to be in place during excavation. Many, many aspects of the remedies to be utilized in cleaning up the soil at the Site will be designed during the Remedial Design phase which is the next step of the Superfund process. For more details about the selected treatment processes see the July 1999 Feasibility Study Report located in the Information Repository. Now that the Record of Decision has been signed, EPA and Duracell/Battery Tech will negotiate the remaining steps of the process to determine who will pay for and conduct the cleanup of soils at the Site. -2- INFORMATION REPOSITORY Copies of all documents developed during the Superfund process have been placed in the Information Repository for the public which is located in the: Davidson County Public Library 602 South Main Street Lexington, N. C. Site Map: NEED MORE INFORMATION? If you have technical questions please contact Ken Mallary (EPA Project.Manager) at.1-800-435-9233 ext. 28802. If you.want your name added to the Site mailing fist or want to receive copies of fact. sheets or other information please contact Diane Barrett (EPA Community Involvement Coordinator) at 1-800-435-9233 ext. 28830. • i, ti_ x 's�i .� -_�,,..4 � 1 4 1 i 'r i S 4 i ti } l i 4 1 i 4} i' I 4'� .. .. Awl WOMEN `~ U.S. Environmental Protection Agency North Site Management Branch ((fi�ri �j{� i Pr. V(�AT= j� ^{ it 61 Forsyth Street, SW Diane Barrett, Community involvement Coords Region 4 Atlanta, Georgia 30303 Ken Mallary, Remedial Project Manager ` 4,� z G A i -� E I H Official Business Penalty for Private Use $300 DURA 29 SIF M17 IZ3/ 6/55 M5 MR. STEVE TEDDER. CHIEF WATER QUALITY SECTIONIDEM NC DEPT. OF ENVIRONMENT & NATURAL RESOURCES A P.O. BOX 27687 27fa11-7687 �� - RALEIGH NC .1.11J,111114AARA liftii,li,i,r,l,ili,1 _-�E,aM