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HOUSTON LABORATORY <br /> 8880 INTERCHANGE DRIVE <br /> HOUSTON TEXAS 77054 <br /> ® PHONE(713)660 0901 <br /> Certificate of Analysis No. H9-9704960-03 <br /> BP Oil Company <br /> 295 SW 41st St, Bldg 13 , Ste N P .O # <br /> Renton, WA 98055 G797556 , COC#055992 <br /> ATTN Scott Hooton DATE- 04/29/97 <br /> PROJECT: BP Oil #11194 PROJECT NO: 10-085-10-2 <br /> SITE: Tracy , CA. MATRIX: WATER <br /> SAMPLED BY: Alisto Engineering DATE SAMPLED: 04/16/97 <br /> SAMPLE ID: S-3 DATE RECEIVED: 04/18/97 <br /> ANALYTICAL DATA <br /> PARAMETER RESULTS DETECTION UNITS <br /> LIMIT <br /> MTBE ND 100 P µg/L <br /> Benzene 37 5 0 P ug/L <br /> Toluene ND 10 0 P µg/L <br /> Ethylbenzene 170 10 . 0 P µg/L <br /> Total Xylene 170 10 0 P µg/L <br /> Surrogate Recovery <br /> 1, 4-Difluorobenzene 97 <br /> 4-Bromofluorobenzene 108 <br /> Method 8020A*** <br /> Analyzed by. VHZ <br /> Date : 04/27/97 <br /> Total Petroleum Hydrocarbons-Gasoline 2 . 3 0 5 P mg/L <br /> Surrogate Recovery <br /> 1, 4-Dif Iuorobenzene 80 <br /> 4-Bromofluorobenzene 83 <br /> California LUFT Manual <br /> Analyzed by- VHZ <br /> Date 04/27/97 06 20 : 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 />