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HOUSTON LABORATORY <br /> 8880 INTERCHANGE DRIVE <br /> ® HOUSTON,TEXAS 77054 <br /> Certificate of Analysis No. H9-9703E82-03 PHONE(713)660-0901 <br /> BP Oil Company <br /> 295 SW 41st St, Bldg 13 , Ste N P.O.#$ <br /> Renton, WA 98055 G797622 COC#077101 <br /> ATTN: Scott Hooton DATE: 04/07/97 <br /> PROJECT: BP Oil #1.1195 PROJECT NO: 10-151-54 L ync <br /> SITE: Lathrop MATRIX: WATER <br /> SAMPLED BY: Alisto Engineering DATE SAMPLED: 03/25/97 <br /> SAMPLE ID: S-3 DATE RECEIVED: 03/27/97 <br /> ANALYTICAL DATA <br /> PARAMETER RESULTS DETECTION UNITS <br /> LIMIT <br /> MTBE ND 10 P Ag/L <br /> Benzene ND 0 . 5 P µg/L <br /> Toluene ND 1 . 0 P µg/L <br /> Ethylbenzene ND 1 . 0 P µg/L <br /> Total Xylene ND 1 . 0 P µg/L <br /> Surrogate Recovery <br /> 1, 4-Difluorobenzene 90 <br /> 4-Bromofluorobenzene 93 <br /> Method 8020A*** <br /> Analyzed by: fab <br /> Date: 04/03/97 <br /> Total Petroleum Hydrocarbons-Gasoline ND 0 . 05 P mg/L <br /> Surrogate Recovery <br /> 1,4-Difluorobenzene 87 <br /> 4-Bromofluorobenzene 87 <br /> California LUFT Manual <br /> Analyzed by: fab <br /> Date : 04/03/97 03 :40 : 00 <br /> Diesel Range Organics ND 0 . 1 P mg/L <br /> Surrogate % Recovery <br /> n-Pentacosane 62 <br /> California LUFT Manual for Diesel <br /> Analyzed by: RR <br /> Date: 04/01/97 02 :49 : 00 <br /> ND - Not detected. (P) - Practical Quantitation Limit <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 />