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• <br /> �,tEO ST,)FS <br /> UNITED STATES ENVIRONMENTAL PROTECTION AGENCY <br /> ;F~r„molt� REGION I% <br /> 75 Hawthorne Street <br /> San Francisco. Ca. 94105.3901 R E I V <br /> August 27 , 1992 AUG 3 1 1992 <br /> Marshall Cloud ENVIRONMENTAL HEALTH <br /> Superfund Project Manager PkRM1f/§94VIIQt0 <br /> Environmental Protection Office <br /> Bldg. 231, Tracy Location <br /> Defense Distribution Region West <br /> P.O. Box 960001 <br /> Stockton, CA 95296-0250 <br /> RE: Evaluation of Detection Limits for the DDRW-Tracy <br /> Comprehensive RI/FS Work Plan <br /> Dear Marshall : <br /> As agreed during the dispute resolution meeting of August 4 , <br /> 1992 , EPA is providing a list of "obvious" detection limit <br /> inadequacies (see attached tables) in the Comprehensive RI/FS <br /> Work Plan. As also agreed, EPA is providing this information on <br /> or before the end of August 1992 . <br /> A review of the attached tables reveals that many of the <br /> detection limits for groundwater appear to be inadequate for <br /> Baseline Risk Assessment (BRA) purposes. For the soils, listed <br /> detection limits for dioxins appear to be clearly inadequate for <br /> BRA purposes, for any scenario. <br /> On August 4 , 1992 , DDRW-Tracy agreed to attempt to correct <br /> detection limit inadequacies prior to field sampling. Please <br /> contact me at (415) 744-2392 should you have any questions. <br /> Sincerely, <br /> Michael Work <br /> Project Manager (H-9-1) <br /> Federal Facilities Enforcement Branch <br /> Office of Superfund <br /> Attachments <br /> cc: (See Distribution List) <br /> Prived on Renrled Paper <br />