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HOUSTON LABORATORY <br /> 8880 INTERCHANGE DRIVE <br /> HOUSTON, TEXAS 77054 <br /> PHONE{713}6600901 <br /> Certificate of Analysis No. H9-9710855-05 01 <br /> BP Oil Company <br /> 295 SW 41st St, Bldg 13 , Ste N P.O. # <br /> Renton, WA 98055 H177183 , COC#072054 <br /> ATTN: Scott Hooton DATE : 11/25/97 <br /> PROJECT: 411195, NA PROJECT NO: 10-151-06/001 <br /> SITE: Lathrop, CA MATRIX: WATER <br /> SAMPLED BY: Alisto Engineering DATE SAMPLED: 10/15/97 <br /> SAMPLE ID: S-5 DATE RECEIVED: 10/17/97 <br /> ANALYTICAL DATA <br /> PARAMETER RESULTS DETECTION UNITS <br /> LIMIT <br /> MTBE 21000 1000 P <br /> Benzene ND 0 . 5 P pg/L <br /> Toluene ND 1 . 0 P µg/L <br /> Ethylbenzene ND 1 . 0 p ug/L <br /> Total Xylene ND 1 . 0 P pg/L <br /> Surrogate Recovery <br /> 1, 4-Difluorobenzene 103 <br /> 4-Bromofluorobenzene 73 <br /> Method 8020A*** <br /> Analyzed by: MF <br /> Date : 10/23/97 <br /> Gasoline Range Organics 0 . 67 0 . 05 P mg/L <br /> Surrogate Recovery <br /> 1 , 4-Difluorobenzene 117 <br /> 4-Bromofluorobenzene 67 <br /> California LUFT Manual for Gasoline <br /> Analyzed by: MF <br /> Date : 10/22/97 10 :46 : 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 />