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' CASTLE ANALYTICAL LABORATORY <br /> qW Environmental Testing Services 2333 Shuttle Drive, Atwater, CA 95301 Phone (209) 384-2930 <br />' Certificate 112079 Fax (209) 384-1507 <br /> Advanced GeoEnvironmental, Inc Client Project ID Cal Fuels Sampled 4-29-99 <br /> of Northern California Reference Number 2250 Received 5-4-99 <br />' 4005 North Wilson Way Sample Description Water Extracted 5-6 99 <br /> Stockton CA 95205 Sample Prep/Analysis Method EPA 6030/8015, 8020 Analyzed 5-6-99 <br /> Attn Tim Cuellar Lab Numbers 2250-6W, 7W, 8W, 9W, I IW Reported 5-18-99 <br /> TOTAL PETROLEUM HYDROCARBONS -GASOLINE <br />' WITH BTEX DISTINCTION <br />' ANALYTE REPORTING LIMIT SAMPLE ID SAMPLE ID SAMPLE ID SAMPLE ID SAMPLE ID <br /> MW-7/ MW 8/ MW 9/ MW-10/ MW-121 <br /> 4-29-99 4-2999 4-29-99 4-29 99 4-29-99 <br /> (uglL) (ug/L) tug/L) fug/L) (ug/U tug/L) <br />' MTBE 050 ND NO ND NO NO <br />' BENZENE 050 ND 092 6 7 5 6 ND <br /> TOLUENE 060 1 1 2 1 1 6 14 NO <br />'• ETHYL BENZENE 050 ND ND NO 5 4 ND <br /> TOTAL XYLENES 050 3 5 2 3 1 2 22 NO <br />' GASOLINE RANGE <br /> HYDROCARBONS 50 ND ND 350 150 ND <br /> Report Limit Multiplication Factor 1 1 1 1 1 <br /> Surrogate % Recovery LID 100%1 PID 99 6% ND 101%1 PID Inn% cin lora,,pin a7 o% crn 1n..r Pln.nca crD �x r n oc e� <br /> Instrument ID VAR-GC1 VAR-GC1 VAR-GC1 VAR GC1 VAR-GCI <br /> Analytes reported as NO were not detected or below the Practical Quantitation Limit <br /> Practical Quantitation Limit = Reporting Limit x Report Limit Multiplication Factor <br /> • ANALYST & APPROVED BY <br /> Clan J Cone Jam C Phillips <br /> vrronmental Lab Director <br />