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HOUSTON LABORATORY <br /> 44 8880 INTERCHANGE DRIVE <br /> HOUSTON,TEXAS 77054 <br /> -'= r@ificate of Analysis No. H9-9805371-04 PHONe(71s)sso-osoi <br /> BP Oil Company <br /> 295 SW 41st St , Bldg 13 , Ste N P .O . # <br /> Renton, WA 98055 H177183 , COC#098772 <br /> ATTN: Scott Hooton DATE : 05/19/98 <br /> PROJECT: #11195, N/A PROJECT NO: 10-151-6-3 <br /> SITE: Lathrop, CA MATRIX: WATER <br /> :.� SAMPLED BY: Alisto Engineering DATE SAMPLED: 05/07/98 <br /> ;.J SAMPLE ID: S-4 DATE RECEIVED: 05/08/98 <br /> I <br /> ' .� ANALYTICAL DATA <br /> PARAMETER RESULTS DETECTION UNITS <br /> LIMIT <br /> MTBE 110000 5000 P ug/L <br /> Benzene ND 2 . 5 P ug/L <br /> Toluene ND 5 . 0 P ug/L <br /> '- 1 Ethylbenzene ND 5 . 0 P ug/L <br /> Total Xylene ND 5 . 0 P ug/L <br /> Surrogate % Recovery <br /> 1 , 4-Difluorobenzene 100 <br /> 4-Bromofluorobenzene 107 <br /> Method 8020A*** <br /> _r>r Analyzed by: HS <br /> Date : 05/17/98 <br /> r>! Gasoline Range Organics 67 2 . 5 P mg/L <br /> Surrogate % Recovery <br /> 1 , 4-Difluorobenzene 93 <br /> 4-Bromofluorobenzene 93 <br /> California LUFT Manual for Gasoline <br /> Analyzed by: HS <br /> !- Date : 05/17/98 01 : 37 : 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 /> 't <br />