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HOUSTON LABORATORY <br /> 8980 INTERCHANGE DRIVE <br /> O HOUSTON,TEXAS 77054 <br /> Certificate of Analysis No. H9-9901059-02 PHONE(713)6fi0-0901 <br /> BP Oil Company <br /> 295 SW 41 Street Bldg. 13 , Ste P.O.# <br /> Renton, WA 98055 N/A, COC##100191 <br /> ATTN: Scott Hooton DATE: 01/14/99 <br /> PROJECT: #11195 , 16500 I-5 PROJECT NO: 981231-K1 <br /> SITE: Lathrop MATRIX: WATER <br /> SAMPLED BY: Blaine Tech Services DATE SAMPLED: 12/31/98 07 : 40 : 00 <br /> SAMPLE ID: B DATE RECEIVED: 01/05/99 <br /> ANALYTICAL DATA <br /> PARAMETER RESULTS DETECTION UNITS <br /> LIMIT <br /> MTBE 13 5 . 0 P ug/L <br /> BENZENE ND 5 . 0 P ug/L <br /> TOLUENE ND 5 . 0 P ug/L <br /> ETHYLBENZENE ND 5 . 0 P ug/L <br /> TOTAL XYLENE ND 5 . 0 P ug/L <br /> TOTAL VOLATILE AROMATIC HYDROCARBONS ND ug/L <br /> Surrogate % Recovery <br /> 1 , 4-Difluorobenzene 100 <br /> 4-Bromofluorobenzene 100 <br /> Method 8020A *** <br /> Y <br /> Analyzed b TB <br /> _._ Y <br /> Date : 01/12/99 <br /> Gasoline Range Organics ND 0 . 25 P mg/L <br /> Surrogate % Recovery <br /> 1 , 4-Difluorobenzene 93 <br /> 4-Bromofluorobenzene 93 <br /> California LUFT Manual for Gasoline <br /> Analyzed by: CJ <br /> Date : 01/08/99 01 :41 : 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 />