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HOUSTON LABORATORY <br /> 8880 INTERCHANGE DRIVE <br /> n HOUSTON,TEXAS 77054 <br /> erOtificate of Analysis No. H9-991031.0-05 PHONE (713)660-090: <br /> BP Oil Company <br /> 295 SW 41 Street Bldg. 1.3 , SteN P . O. # <br /> Renton, WA 98055 N/A, COC#118682 <br /> ATTN: Scott Hooton DATE : 10/19/99 <br /> PROJECT: #11192 , 1403 Country Club PROJECT NO: 990726-N2 <br /> SITE: Stockton MATRIX: WATER <br /> SAMPLED BY: Blaine Tech Services DATE SAMPLED: 10/07/99 15 : 25 : 00 <br /> SAMPLE ID: E DATE RECEIVED: 10/09/99 <br /> ANALYTICAL DATA <br /> PARAMETER RESULTS DETECTION UNITS <br /> LIMIT <br /> MTBE 35000 100 P ug/L <br /> BENZENE ND 1 . 0 P ug/L <br /> TOLUENE ND 1 . 0 P ug/L <br /> ETHYLBENZENE 8 . 7 1 . 0 P ug/L <br /> TOTAL XYLENE 1 . 1 1 . 0 P ug/L <br /> TOTAL VOLATILE AROMATIC HYDROCARBONS 9 . 8 ug/L <br /> Surrogate % Recovery <br /> 1, 4-Difluorobenzene 93 <br /> • 4-Bromofluorobenzene 100 <br /> Method 8020A *** <br /> Analyzed by: WLR <br /> Date : 10/1.8/99 <br /> Gasoline Range Organics 52 2 . 5 P mg/L <br /> Surrogate o Recovery <br /> 1 , 4-Difluorobenzene 100 <br /> 4-Bromofluorobenzene 107 <br /> California LUFT Manual for Gasoline <br /> Analyzed by: WLR <br /> Date : 10/16/99 03 : 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 />