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HOUSTON LABORATORY <br /> ano INTERCHANGE DRIVE <br /> O HOUSTON,TEXAS 77054 <br /> PHONE(713)860-0907 <br /> ' Certificate of Analysis No. H9-9901A27-01 <br /> BP Oil Company <br /> 295 SW 41 Street 131dg. 13 , Ste P.O. # <br /> Renton, WA 98055 N/A, COC#100217 <br /> ATTN: Scott Hopton DATE : 01/28/99 <br /> PROJECT: #11193 , 3202 W. Hammer Lane PROJECT NO: 990119-J2 <br /> SITE: Stockton, CA MATRIX: WATER <br /> SAMPLED BY: Blaine Tech Services DATE SAMPLED: 01/19/99 10 :41 : 00 <br /> SAMPLE ID: A DATE RECEIVED: 01/25/99 <br /> ANALYTICAL DATA <br /> PARAMETER RESULTS DETECTION UNITS <br /> LIMIT <br /> MTBE 2 . 3 1 . 0 P ug/L <br /> BENZENE ND 1 . 0 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 /> TOTAL VOLATILE AROMATIC HYDROCARBONS ND ug/L <br /> Surrogate % Recovery <br /> 1 , 4 -Difluorobenzene 110 <br /> 4 -Bromofluorobenzene 103 <br /> Method 8020A *** <br /> Analyzed by : LJ <br /> Date : 01/27/99 <br /> Gasoline Range Organics ND 0 . 050 P mg/L <br /> Surrogate % Recovery <br /> 1 , 4-Difluorobenzene 80 <br /> 4-Bromofluorobenzene 97 <br /> California LUFT Manual for Gasoline <br /> Analyzed by: LJ <br /> Date : 01/27/99 13 : 21 : 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 />