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.l <br /> CASE NARRATIVE <br /> Prepared For: <br /> Bob Cochran <br /> Chevron Products Company <br /> 6001 Bollinger Canyon Road <br /> Building L <br /> P.O. Box 6004 <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 781041. Samples arrived at the laboratory <br /> on Friday, October 05, 2001. <br /> METHODOLOGY <br /> The specific methodologies used in obtaining the enclosed analytical results are <br /> indicated on the laboratory chronicles. <br /> COMMENTS <br /> Due to a coeluting peals near its retention time, accurate chlorobenzene <br /> surrogate recovery for the Custom TPH with Ranges analysis could not be <br /> determined for samples MW-7, MW-9, MW-9A and MW-9S from Facility 9-0557. <br /> Due to interferences from the sample matrix (high sediment content) for samples <br /> MW-8, MW-10 and MW-11 from Facility 9-0557, the reporting limit was increased <br /> for the Custom TPH with Ranges analysis. <br /> The vials MW-9A, MW-9S and MW-10 from Facility 9-0557 submitted for the <br /> BTEX/MTBE (8021) and TPH-GRO analysis did not have a pH < 2 at the time of <br />