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CASE NARRATIVE <br /> Prepared For: <br /> Bob Cochran <br /> ChevronTexaco <br /> 6001 Bollinger Canyon Road L4310 <br /> San Ramon, CA 94583-0904 <br /> Prepared By: <br /> Lancaster Laboratories <br /> 2425 New Holland Pike <br /> Lancaster, PA 17605-2425 <br /> SAMPLE GROUP <br /> The sample group for this submittal is 837315. Samples arrived at the laboratory <br /> on Thursday, January 09, 2002. <br /> METHODOLOGY <br /> The=specific�methodo log ies;used�in�.obtaining4he,enclosed�anaIytical4esults are - <br /> indicated on the laboratory chronicles. <br /> COMMENTS <br /> The percent recovery for the surrogate for the TPH-GRO analysis was outside QC <br /> limits in the MS associated with samples QA, MW-1 and MW-2 from Facility <br /> 90557. This compound met recovery criteria in the LCS/LCSD analysis. <br /> Accurate surrogate recoveries could not be determined due to the dilution <br /> required for the TPH Fuels analysis of sample MW-9S from Facility 90557. <br />