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HOUSTON LABORATORY <br /> 8380 INTERCHANGE DRIVE <br /> HOUSTON, TEXAS :7084 <br /> r�)ificate of Analysis No . H9-9803153 --01 PHONE (710} 65::-1901 <br /> BP Oil Company <br /> 295 SW fist St , Bldg 13 , Ste N O <br /> Renton, WA 98055 N/A , COC--072100 <br /> ATTN : Scott Hooton DATE : 03/17/98 <br /> PROJECT : ##11192 , N/A PROJECT NO : 10-037- 07/001 <br /> SITE : Stockton, CA MATRIX : WATER <br /> SAMPLED BY: Alisto Engineering DATE SAMPLED : 02/26/98 <br /> SAMPLE ID : S-1 DATE RECEIVED : 03/04/98 <br /> ANALYTICAL DATA <br /> PARAMETER RESULTS DETECTION UNITS <br /> LIMIT <br /> MTBE ND 10 P ug/L <br /> Benzene ND 0 . 5 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 /> Surrogate a Recovery <br /> 1 , 4 -Difluorobenzene 97 <br /> 4 -Bromofluorobenzene 93 <br /> Method 8020A*** <br /> Analyzed by : LJ/ <br /> Date : 03/06/98 <br /> Gasoline Range Organics ND 0 . 05 P mg/L <br /> Surrogate % Recovery <br /> 1 , 4 -Difluorobenzene 73 <br /> 4 -Bromofluorobenzene 97 <br /> California LUFT Manual for Gasoline <br /> Analyzed by: LJ/ <br /> Date : 03/06/98 10 :49 : 00 <br /> ND - Not detected. (P) - Practical Quantitation Limit <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 />