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HOUSTON LABORATORY <br /> 8880 INTERCHANGE DRIVE <br /> HOUSTON TEXAS 77054 <br /> ® PHONE(713)660 0901 <br /> Certificate of Analysis No. H9-9704960-01 <br /> BP Oil Company P O # <br /> 295 SW 41st St, Bldg 13 , Ste N G797556, COC#055992 <br /> Renton, WA 98055 DATE 04/29/97 <br /> ATTN Scott Hooton <br /> PROJECT: BP oil #11194 PROJECT NO: 10-085-10-2 <br /> SITE: Tracy , CA. MATRIX: WATER <br /> SAMPLED BY: Alisto Engineering DATE SAMPLED: 04/16/97 <br /> SAMPLE ID: S-1 DATE RECEIVED: 04/1.8/97 <br /> ANALYTICAL DATA <br /> PARAMETER RESULTS DETECTION UNITS <br /> LIMIT <br /> MTBE 57 10 P Fug/L <br /> Benzene ND 0 5 P µg/L <br /> ND I 0 P µg/L <br /> Toluene <br /> END 1 0 P ug/L <br /> thylbenzene <br /> Total Xylene ND 1 0 P µg/L <br /> Surrogate % Recovery <br /> 1, 4-Difluorobenzene 97 <br /> 4-Bromofluorobenzene 93 <br /> Method 8020A*** <br /> Analyzed by. VHZ <br /> Date 04/27/97 <br /> Total Petroleum Hydrocarbons-Gasoline 0 . 18 0 05 P mg/L <br /> Surrogate Recovery <br /> 1, 4-Difluorobenzene 87 <br /> 4-Bromofluorobenzene 87 <br /> California LUFT Manual <br /> Analyzed by: VHZ <br /> Date . 04/27/97 04 54 00 <br /> (P) - Practical Quant3-tation 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 /> ***Ret . 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 />