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HOUSTON LABORATORY <br /> 8880 INTERCHANGE DRIVE <br /> ® HOUSTON,TEXAS 77054 <br /> Certificate of Analysis No. H9-990 .059-05 PHONE(713)fi60.09Q1 <br /> -) <br /> BP Oil Company <br /> 295 SW 41 Street B1dg. 13 , Ste P.O.# <br /> Renton, WA 98055 N/A, CDC#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 08 :40 :00 <br /> SAMPLE ID: E DATE RECEIVED: 01/05/99 <br /> ANALYTICAL DATA <br /> PARAMETER RESULTS DETECTION UNITS <br /> L IM-I T <br /> MTBE 490 1 . 0 P ug/L <br /> BENZENE ND 1 . 0 P ug/L <br /> TOLUENE ND 1 . 0 P ug/L <br /> ETHYLBENZENE ND 1 . 0 P ug/L <br /> TOTAL XYLENE ND 1 . 0 P ug/L <br /> TOTAL VOLATILE AROMATIC HYDROCARBONS ND ug/L <br /> Surrogate Recovery <br /> 1, 4-Difluorobenzene 123 <br /> 4-Bromofluorobenzene 93 <br /> Method 8020A *** <br /> `== Analyzed by: CJ <br /> Date : 01/08/99 <br /> Gasoline Range Organics 0 .47 0 . 05 P mg/L <br /> Surrogate % Recovery <br /> 1, 4-Difluorobenzene 113 <br /> 4-Bromofluorobenzene 90 <br /> California LUFT Manual for Gasoline <br /> Analyzed by: CJ <br /> Date : 01/08/99 16 : 56 : 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 />