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a ,s <br /> HOUSTON LABORATORY <br /> 8880 INTERCHANGE DRIVE <br /> HOUSTON,TEXAS 77054 <br /> ertificate of Analysis No. H9-9705C92-05 PHONE(713)660.0901 <br /> BP Oil Company <br /> 295 SW 41st St , Bldg 13 , Ste N P •O• # <br /> Renton, WA 98055 G797415 , COC#077267 <br /> ATTN: Scott Hooton DATE : 06/04/97 <br /> PROJECT: BP Oil #11193 PROJECT NO: 10-136-6-4 <br /> SITE: Stockton, CA MATRIX: WATER <br /> SAMPLED BY: Alisto Engineering DATE SAMPLED: 05/22/97 <br /> SAMPLE ID: S-5 DATE RECEIVED: 05/24/97 <br /> ANALYTICAL DATA <br /> PARAMETER RESULTS DETECTION UNITS <br /> LIMIT <br /> MTBE 3100 1000 P jug/L <br /> Benzene 76 0 . 5 .P Ag/L <br /> Toluene 1 . 2 1 . 0 P µg/L <br /> Ethylbenzene 9 . 3 1 . 0 P µg/L <br /> Total Xylene 2 . 1 1 . 0 P µg/L <br /> Surrogate Recovery <br /> 1, 4-Difluorobenzene 110 <br /> 4-Bromofluorobenzene 103 <br /> Method 8020A*** <br /> 40 <br /> Analyzed by: DAO <br /> Date : 06/02/97 <br /> Total Petroleum Hydrocarbons-Gasoline 2 . 7 0 . 05 P mg/L <br /> Surrogate Recovery <br /> 1, 4-Difluorobenzene 90 <br /> 4-Bromofluorobenzene 14MI <br /> California LUFT Manual <br /> Analyzed by: DAO <br /> Date : 06/01/97 01 : 39 : 00 <br /> (P) - Practical Quantitation Limit MI - Matrix interference . <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 /> • Y ASSURANCE: These analyses are performed in accordance <br /> QUALITY y <br /> with EPA guidelines for quality assurance . <br /> SPL California License # 1903 <br />