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HOUSTON LABORATORY <br /> 8880 INTERCHANGE DRIVE <br /> O HOUSTON TEXAS 77054 <br /> PHONE (713)660-0901 <br /> nas <br /> Certificate of Analysis No. H9-9610A61-01 <br /> BP Oil Company <br /> 295 SW 41st St, Bldg 13 , Ste N P O # <br /> Renton, WA 98055 G797556, COC#078143 <br /> ATTN Scott Hooton DATE 10/25/96 <br /> PROJECT: BP Oil #11194 PROJECT NO: 1.0-085-10/001 <br /> SITE: Tracy, CA MATRIX: WATER <br /> SAMPLED BY: Alisto Engineering DATE SAMPLED: 10/15/96 <br /> SAMPLE ID: S-1 DATE RECEIVED: 10/17/96 <br /> ANALYTICAL DATA <br /> PARAMETER RESULTS DETECTION UNITS <br /> LIMIT <br /> MTBE ND 10 P µg/L <br /> Benzene ND 0 5 P Ag/L <br /> Toluene ND 1 0 P Ag/L <br /> Ethylbenzene ND 1 0 P Ag/L <br /> Total xylene ND 1 0 P Ag/L <br /> Surrogate Recovery <br /> 1, 4-Difluorobenzene 90 <br /> 4-Bromofluorobenzene 100 <br />• METHOD 8020*** <br /> Analyzed by RL <br /> Date 10/24/96 <br /> Total Petroleum Hydrocarbons-Gasoline ND 0 05 P mg/L <br /> Surrogate % Recovery <br /> 1, 4-D3fluorobenzene 1.00 <br /> 4-Bromofluorobenzene 103 <br /> CA LUFT - Gasoline <br /> Analyzed by RL <br /> Date 10/24/96 07 . 22 00 <br /> ND - Not detected (P) - Practical Quantitation Limit <br /> Notes *Ref Methods for Chemical Analysis of Water and Wastes, 1983 , EPA <br /> **Ref Standard Methods for Examination of Water & Wastewater, 18th ed <br /> ***Ref Test Methods for Evaluating Solid Waste, EPA SW846 , 3rd Ed <br /> QUALITY ASSURANCE: These analyses are performed in accordance <br /> with EPA guidelines for quality assurance <br /> SPL California License # 1903 <br />