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SEQUOIA ANALYTICAL <br /> 1900 4�; z 5 ,M�� <br /> 1900 Bates Avenue • Suite LM • Concord, California 94520 <br /> (510) 686-9600 • FAX (510) 686-9689 <br /> oux Associates Client Project ID ARCO #2130/Stockton Sampled Oct 15" 1893 <br /> 1855 Gateway Blvd , Ste 770 Sample Matrix Soil Received Oct 15, 1993 <br /> Concord, CA 94520 Analysis Method EPA 5030/8015/8020 Reported Oct 19, 1993 <br /> Attention Paul Supple First Sample # 310-0640 <br /> ' T . <br /> OTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> ' Reporting Sample <br /> Analyte Limit I.D. <br /> mg/kg 310-0640 <br /> ' CA6 (A-D) <br /> Purgeable <br />' Hydrocarbons 10 25 <br /> Benzene 0 005 N D <br /> Toluene 0 005 0 049 <br />' Ethyl Benzene 0 005 0 048 <br /> Total Xylenes 0 005 015 <br />' Chromatogram Pattern Non-Gasoline <br /> Mixture <br /> (>C8) <br /> Quality Control Data <br /> Report Limit Multiplication Factor 25 <br /> Date Analyzed 10/18/93 <br /> Instrument Identification HP-2 <br /> Surrogate Recovery, % 97 <br /> (QC Limits = 70-130%) ' <br />'Purgeable Hydrocarbons are quantitated against afresh gasoline standard <br /> Analytes reported as N D were not detected above the stated reporting limit <br /> SEQUOIA ANALYTICAL <br /> Kenneth K F Lee <br /> Laboratory Director <br />' 3100640 ROU <1;> <br />