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HOUSTON LABORATORY <br /> 8880 INTERCHANGE DRIVE <br /> A HOUSTON,TEXAS 77054 <br /> ertificate of Analysis No. H9-9809326-07 PHONE(713)660-0901 t ?; <br /> BP Oil Company 1 <br /> 295 SW 41st St, Bldg 13 , Ste N P.O. # <br /> Renton, WA 98055 H405058, COC#095813 <br /> ATTN: Scott Hooton DATE: 09/17/9 <br /> PROJECT: #11195, PROJECT NO: 10-151-9-3 <br /> SITE: Lathrop, CA MATRIX: WATER <br /> SAMPLED BY: Alisto Engineering DATE SAMPLED: 09/03/98 <br /> SAMPLE ID: S-7 DATE RECEIVED: 09/09/98 <br /> ANALYTICAL DATA <br /> PARAMETER RESULTS DETECTION UNITS <br /> LIMIT <br /> MTBE 8000 500 P ug/ <br /> Benzene ND 0. 5 P ug/L <br /> Toluene ND 1. 0 P ug/T <br /> Ethylbenzene ND 1. 0 P ug/ <br /> Total Xylene ND 1. 0 P ug/i, <br /> Surrogate % Recovery <br /> 1, 4-Difluorobenzene 100 <br /> 4-Bromofluorobenzene 100 <br /> Method 8020A*** <br /> Analyzed by: YN <br /> -0Date : 09/15/98 <br /> Gasoline Range Organics 13 2 . 50 P mg/: <br /> Surrogate % Recovery <br /> 1, 4-Difluorobenzene 80 <br /> 4-Bromofluorobenzene 93 <br /> California LUFT Manual for Gasoline <br /> Analyzed by: YN <br /> Date: 09/15/98 12 : 49 : 00 <br /> (P) - Practical Quantitation Limit ND - Not detected. <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 /> E <br /> I I <br /> QUALITY ASSURANCE: These analyses are performed in accordance <br /> with EPA guidelines for quality assurance. t <br /> SPL California License # 1903 <br /> r <br /> Ik <br /> E <br />