SITE INFORMATION AND CORRESPONDENCE

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i . I OU 1 (continued) GLOSSARY I F TERMS This modification and a No Action Alternative were evaluated against the NCP criteria,and the modification was found to meet these criteria. Administrative Record(AR)—The body Considering the new information that was developed and the changes of documents that forms the basis for the y that have been made to the selected remedy,the DLA believes that it selection of a particular response at a site. the modified remedy is equally protective of human health and the Documents that are included are relevant environment,complies with federal and state requirements,and is documents that were relied upon in selecting more cost-effective than the original remedy. In addition,the revised the response action,as well as relevant remedy utilizes current,site-specific environmental data and analyses documents that were considered but to the extent practicable for this site. ultimately not used. Applicable or Relevant and Appropriate Requirements(ARARs)— .90 Applicable requirements are those cleanup standards,standards of control,and other HERTS 72 substantive environmental protection DSERTS 72 is a new site that was identified after the original ROD was requirements, criteria,or limitations promul- signed. In the winter of 1998-1999,a new storm drain and catch basin gated under federal or state law that specifi- were installed cast of the unlined stormwater detention pond(SWMU 4). cally address a hazardous substance,pol- Soil excavated as a part of the stone drain installation was removed lutant,contaminant,remedial action,loca- from a trench running north to south along the length of the sewage tion,or other circumstance at a CERCLA lagoons. This soil was sampled to determine whether it should be site. Relevant and appropriate require- classified for use as backfill or for off-site disposal. Analytical results ments are those cleanup standards,stan- indicated that several contaminants of potential concern(including dards of control,and other substantive total petroleum hydrocarbons,various pesticides,and selenium)were environmental protection requirements, present in the soil. The area was then designated for further testing. criteria,or limitations promulgated under federal or state law that,while not"appli- Soil and groundwater tests determined that the contaminants present cable"to a hazardous substance,pollut- in soils at DSERTS 72 are not migrating to groundwater and do not ant,contaminant,remedial actiofi,loca- pose a threat to groundwater quality. A risk assessment concluded tion,or other circumstance at a CERCLA that the contaminants at DSERTS 72 do not pose an unacceptable site,address problems or situations suffi- risk to human health,assuming that the area continues to be used ciently similar to those encountered at the for industrial purposes. CERCLA site that their use is well suited to the particular site. Follow-up sampling in the location of the storm drain did not detect Cleanup—Actions taken to deal with a any chemical contaminants in site soils or groundwater. It is believed release of contaminants that could affect that most of the soil volume affected by the chemicals was removed human health and/or the environment.The during excavation and construction activities. term"cleanup"is sometimes used interchange- Evaluation and Selection of Preferred Alternative ably with the terms remedial action,removal The original ROD did not contain remedial objectives for DSERTS 72, action,response action or corrective action. since this site was discovered after the original ROD was signed. Comprehensive Environmental The ROD Amendment selects institutional controls as the appropriate Response,Compensation,and remedy at DSERTS 72. Institutional controls consisting of an aggregate Liability Act(CERCLA)— cover,land use restrictions,and monitoring would be implemented in A federal law passed in 1980 and accordance with the Department of Defense's Interim Policy on Land modified in 1986 by the Superfund Use Controls Associated with Environmental Restoration Activities. Amendments and Reauthorization Act(SARA).The act created a trust The Land Use(institutional control)Alternative and a No Action fund,known as Superfurtd,to investigate Alternative were evaluated against the NCP criteria. The Land Use and clean up abandoned or uncontrolled Control Alternative was found to meet these criteria. This alternative hazardous waste sites.The act requires the would prevent unacceptable risks to human health and protect the Defense Logistics Agency to reach agree- environment from contamination remaining at the site,ensure long-term ment with the EPA for remedial actions at protection of human health,and comply with appropriate regulations. DDJC-Tracy and to perform the remedial actions. 8