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HOUSTON LABORATORY <br /> 8880 INTERCHANGE DRIVE <br /> Q HOUSTON, TEXAS 77054 AW <br /> ertificate of Analysis No. H9-9809326-03 PHONE(713)660-0901 <br /> fr <br /> BP Oil Company <br /> 295 SW 41st St, Bldg 13 , Ste N P.O.# <br /> Renton, WA 98055 H405058, COC#095813 <br /> ATTN: Scott Hooton DATE: 09/17/98 <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-3 DATE RECEIVED: 09/09/98 <br /> ANALYTICAL DATA <br /> PARAMETER RESULTS DETECTION UNITS <br /> LIMIT <br /> MTBE 19 10 P ug/L <br /> Benzene ND 0 . 5 P ug/L <br /> Toluene ND 1 . 0 P ug/L <br /> Ethylbenzene ND 1. 0 P ug/L <br /> Total Xylene 2 . 0 1. 0 P ug/L <br /> Surrogate % Recovery <br /> 1 , 4-Difluorobenzene 93 <br /> 4-Bromofluorobenzene 90 <br /> �.._ Method 8020A*** <br /> _ _. Analyzed by: YN <br /> _,Date : 09/14/98 <br /> Gasoline Range Organics ND 0 . 05 P mg/L <br /> Surrogate % Recovery <br /> 1, 4-Difluorobenzene 80 <br /> 4-Bromofluorobenzene 87 <br /> California LUFT Manual for Gasoline <br /> Analyzed by: YN <br /> Date: 09/14/98 07 : 22 : 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 /> QUALITY ASSURANCE: These analyses are performed in accordance <br /> with EPA guidelines for quality assurance. <br /> SPL California License # 1903 <br />