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03/09/00 THU 15 39 FAX 209 384 1507 Castle Analytical Lab 003 <br /> CASTLE ANALYTICAL LABORATORY <br /> Environmental Testing Servioes 2333 Shuttle Dnve,Atwater CA 95301 Phone (209)3842930 <br /> Certificate#2079 Fax (209)384-1507 <br /> Advanced GeoEnvironmental,Inc Client Project ID Flag City Chevron Sampled 2-25 00 <br /> of Northern California Reference Number 2855 Received 2-26.00 <br /> 4005 North Wilson Way Sample Descriptlon Water Extracted 2-29-00 <br /> Stockton,CA 9520$ Sample PrepJAnalyst$Method EPA 503018015, 8020 Analyzed 2-29-00 <br /> Attn Tim Cuellar Lab Numbers 2955-BW,7W,8W,9W, 10W Reported 3-9-00 <br /> TOTAL PETROLEUM HYDROCARBONS -GASOLINE <br /> WITH BTEX DISTINCTION <br /> ANALYTE REPORTING LIMIT SAMPLE ID $AMPLE ID SAMPLE ID SAMPLE ID SAMPLE Ip <br /> MW 6B MW 7 FCDW 1 FODW 2 FCSD I <br /> (ug/-) (ug/L) (ug/L) (ug1L) (ug/L) (ug/L) <br /> MTBE 050 > 35 71 NO NO 23 <br /> BENZENE 050 NO NO ND NO ND <br /> TOLUENE 060 NO NO ND ND 11 <br /> ETHYL BENZENE 050 NO NO ND NO 05D <br /> TOTAL XYLENES 0-50 NO ND NO NO 23 <br /> GASOLINE RANGE <br /> HYDROCARBONS 50 ND ND NO ND 150 <br /> Report Lima Multiplication Factor 1 1 1 1 1 <br /> Report Lima Multiplication Factor MTBE only 10 <br /> Surrogate%Recovery RD 99.2x154D IM FID 10%liID los% Flo 10:aiwo-lo2% RQ o111%)FRD x OL ao aivrirRD 1Q9% <br /> Instrument ID VAR-GCi VAR-GCI VAR-GCI VAR-GC1 VAR-GCI <br /> Analytes reported as NO were not detected or below the Practical Quantitation Limit <br /> Prachcal Quantitation Limit=Reporting Limb x Report Lima Multiplication Factor r <br /> ANALYST APPROVED BY <br />. Clan J Cone Jam 5 Phillips <br /> En rronmental Lab Director <br />