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HOUSTON LABORATORY <br /> 9860 INTERCHANGE DRIVE <br /> HOUSTON,TEXAS 77054 <br /> n PHONE(713)660-0901 <br /> Certificate of Analysis No. H9-9901059-07 <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 09 : 25 : 00 <br /> SAMPLE ID: G DATE RECEIVED: 01/05/99 <br /> ANALYTICAL DATA <br /> PARAMETER RESULTS DETECTION UNITS <br /> LIMIT <br /> MTBE 160000 500 P ug/L <br /> BENZENE ND 25 P ug/L <br /> TOLUENE ND 25 P ug/L <br /> ETHYLBENZENE ND 25 P ug/L <br /> TOTAL XYLENE ND 25 P ug/L <br /> TOTAL VOLATILE AROMATIC HYDROCARBONS ND ug/L <br /> Surrogate % Recovery <br /> 1, 4-Difluorobenzene 107 <br /> 4-Bromofluorobenzene 100 <br /> Method 8020A *** <br /> Analyzed by: TB <br /> Date : 01/12/99 <br /> Gasoline Range Organics 110 1 . 2 P mg/L <br /> Surrogate % Recovery <br /> 1 , 4-Difluorobenzene 173MI <br /> 4-Bromofluorobenzene 92 <br /> California LUFT Manual for Gasoline <br /> Analyzed by: CJ <br /> Date : 01/08/99 02 : 55 : 00 <br /> (P) - Practical Quantitation Limit ND - Not detected. <br /> MI - Matrix interference . <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 /> COMMENTS : Sample contain petroleum hydrocarbons from C10-c24 <br /> that do not resemble a diesel pattern. (C10-c24) RR <br /> QUALITY ASSURANCE: These analyses are performed in accordance <br /> with EPA guidelines for quality assurance . <br /> SPL California License ## 1903 <br />