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HOUSTON LABORATORY <br /> 8880 INTERCHANGE DRIVE <br /> HOUSTON,TEXAS 77054 <br /> ertificate of Analysis No, H9-9705C92-06 PHONE(713)660-0901 • <br /> SP 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-6 DATE RECEIVED: 05/24/97 <br /> ANALYTICAL DATA <br /> PARAMETER RESULTS DETECTION UNITS <br /> LIMIT <br /> MTBE 3400 1000 P µg/L <br /> Benzene 77 0 . 5 P µg/L <br /> Toluene 1 . 1 1 . 0 P µg/L <br /> Ethylbenzene 9 . 5 1 . 0 P Ag/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 /> Analyzed by: DAO <br /> Date : 06/02/97 <br /> Total Petroleum Hydrocarbons-Gasoline 2 . 8 0 . 05 P mg/L . <br /> Surrogate $ Recovery <br /> 1, 4-Difluorobenzene 93 <br /> 4-Bromofluorobenzene 15M2 <br /> California LUFT Manual <br /> Analyzed by: DAO <br /> Date : 06/01/97 02 : 08 : 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 /> i <br /> QUALITY ASSURANCE: These analyses are <br /> Q y performed in accordance <br /> with EPA guidelines for quality assurance . <br /> SPL California License # 1903 <br />