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HOUSTON LABORATORY <br /> 8880 INTERCHANGE DRIVE <br /> O HOUSTON,TEXAS 77054 <br /> Certificate of Analysis No. H9-9907597-04 PHONE (713)660-0901 <br /> BP Oil Company <br /> 295 SW 41 Street Bldg. 13 , SteN P . O. # <br /> Renton, WA 98055 N/A, COC#118682 <br /> ATTN: Scott Hooton DATE : 07/29/99 <br /> PROJECT: #11192 , 1403 Country Club PROJECT NO: 990714-M2 <br /> SITE: Stockton, CA MATRIX: WATER <br /> SAMPLED BY: Blaine Tech Services DATE SAMPLED: 07/14/99 <br /> SAMPLE ID: E DATE RECEIVED: 07/16/99 <br /> i <br /> ANALYTICAL DATA <br /> PARAMETER RESULTS DETECTION UNITS <br /> LIMIT <br /> MTBE 38000 100 P ug/L <br /> BENZENE ND 5 . 0 P ug/L <br /> TOLUENE ND 5 . 0 P ug/L <br /> ETHYLBENZENE 20 5 . 0 P ug/L <br /> TOTAL XYLENE 30 5 . 0 P ug/L <br /> TOTAL VOLATILE AROMATIC HYDROCARBONS 50 ug/L <br /> Surrogate % Recovery <br /> 1, 4-Difluorobenzene 90 <br /> 4-Bromofluorobenzene 100 <br /> Method 8020A *** <br /> Analyzed by: DR <br /> Date : 07/23/99 <br /> Gasoline Range Organics 29 0 . 250 P mg/L <br /> Surrogate % Recovery <br /> 1, 4-Difluorobenzene 87 <br /> 4--Bromofluorobenzene 80 <br /> California LUFT Manual for Gasoline <br /> Analyzed by: DR <br /> Date : 07/22/99 05 : 47 : 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 />