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HOUSTON LABORATORY <br /> 8880 INTERCHANGE DRIVE <br /> HOUSTON,TEXAS 77054 <br /> PHONE(713)660-0901 <br /> Certificate of Analysis No. H9-9710855-02 <br /> BP Oil Company <br /> 295 SW 41st St, Bldg 13 , Ste N P.O. # <br /> Renton, WA 98055 H177183 , COC4072054 <br /> ATTN: Scott Hooton DATE : 11/25/97 <br /> PROJECT: ##11195 , 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-2 DATE RECEIVED: 10/17/97 <br /> ANALYTICAL DATA <br /> PARAMETER RESULTS DETECTION UNITS <br /> LIMIT <br /> MTBE 9100 1000 P Ag/L <br /> Benzene ND 0 . 5 P ttg/L <br /> Toluene ND 1 . 0 P ttg/L <br /> Ethylbenzene ND 1 . 0 P Mcg/L <br /> Total Xylene ND 1 . 0 P fcg/L <br /> Surrogate Recovery <br /> 1, 4-Difluorobenzene 93 <br /> 4-Bromofluorobenzene 70 <br /> Method 8020A*** <br /> '+ <br /> Analyzed by: MF <br /> Date : 10/23/97 <br /> Gasoline Range Organics 0 . 42 0 . 05 P mg/L <br /> Surrogate % Recovery <br /> 1, 4-Difluorobenzene 107 <br /> 4-Bromofluorobenzene 63 <br /> California LUFT Manual for Gasoline <br /> Analyzed by: MF <br /> Date : 10/22/97 09 :57 : 00 <br /> Diesel Range Organics ND 0 . 1 P mg/L <br /> Surrogate % Recovery <br /> n-Pentacosane 56 <br /> California LUFT Manual for Diesel <br /> Analyzed by: RR <br /> Date : 10/22/97 12 :24 : 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 />