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HOUSTORLABORATORY <br /> 8880 INTERCHANGE DRIVE <br /> HOUSTON,TEXAS 77054 <br /> PHONE(713) 660-0901 <br /> 44&wc7eretit'icate of Analysis No. H9-9907A97--01 <br /> BP Oil Company <br /> 295 SW 41 Street B1dg. 13 , SteN P.O.$# <br /> Renton, WA 98055 N/A, COC##118682 <br /> ATTN: Scott Hooton DATE : 08/03/99 <br /> PROJECT: ##11192 , 1403 Country Club PROJECT NO: 990726-T1 <br /> SITE: Stockton MATRIX: WATER <br /> SAMPLED BY: Blaine Tech Services DATE SAMPLED: 07/26/99 15 : 25 : 00 <br /> SAMPLE ID: Z DATE RECEIVED: 07/29/99 <br /> ANALYTICAL DATA <br /> PARAMETER RESULTS DETECTION UNITS <br /> LIMIT <br /> MTBE 18000 50 P ug/L <br /> BENZENE ND 1 . 0 P ug/L <br /> TOLUENE ND 1 . 0 P ug/L <br /> ETHYL13ENZENE 7 . 2 1 . 0 P ug/L <br /> TOTAL XYLENE 2 .4 1 . 0 P ug/L <br /> TOTAL VOLATILE AROMATIC HYDROCARBONS 9 . 6 ug/L <br /> Surrogate % Recovery <br /> 1, 4-Difluorobenzene 93 <br /> 4-Bromofluorobenzene 93 <br /> Method 8020A *** <br /> Analyzed by: WLR <br /> Date : 08/03/99 <br /> Gasoline Range Organics 21 0 . 50 P mg/L <br /> Surrogate % Recovery <br /> 1, 4-Difluorobenzene 97 <br /> 4-Bromofluorolhenzene 93 <br /> California LUFT Manual for Gasoline <br /> Analyzed by: WLR <br /> Date : 08/02/99 13 : 33 : 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 /> i <br /> QUALITY ASSURANCE: These analyses are performed in accordance <br /> with EPA guidelines for quality assurance. . <br /> SPL California License # 1903 <br />