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HOUSTON LABORATORY <br /> 8880 INTERCHANGE DRIVE <br /> HOUSTON, TEXAS 77054 <br /> x, erOtificate of Analysis No. H9-9801744-01 PHONE (713)660.0901 <br /> ?:l <br /> BP Oil Company <br /> 295 SW 41st St, Bldg 13 , Ste N P • O . # <br /> Renton, WA 98055 H177183 , COC#086229 <br /> ATTN: Scott Hooton DATE : 01/26/98 <br /> PROJECT: #11195 , 16500 South I-5 PROJECT NO: 10-151-06-002 <br /> SITE: Lathrop MATRIX: WATER <br /> SAMPLED BY: Alisto Engineering DATE SAMPLED: 01/15/98 <br /> SAMPLE ID: S-1 DATE RECEIVED: 01/17/98 <br /> ANALYTICAL DATA <br /> PARAMETER RESULTS DETECTION UNITS <br /> LIMIT <br /> MTBE 820 250 P [Cg/L <br /> Benzene ND 0 . 5 P yg/L <br /> Toluene ND 1 . 0 P µg/L <br /> Ethylbenzene ND 1 . 0 P Ag/L <br /> Total Xylene ND 1 . 0 P µg/L <br /> Surrogate Recovery <br /> 1 , 4-Difluorobenzene 100 <br /> 4-Bromofluorobenzene 92 <br /> Method 8020A*** <br /> Analyzed by: DN <br /> DAte : 01/21/98 <br /> Gasoline Range Organics ND 1 . 2 P mg/L <br /> Surrogate % Recovery <br /> 1 , 4-Difluorobenzene 72 <br /> 4-Bromofluorobenzene 99 <br /> California LUFT Manual for Gasoline <br /> Analyzed by: DN <br /> Date : 01/21/98 02 : 34 : 00 <br /> Diesel Range Organics ND 0 . 2 P mg/L <br /> Surrogate o Recovery <br /> n-Pentacosane 68 <br /> California LUFT Manual for Diesel <br /> Analyzed by: RR <br /> Date : 01/20/98 06 :45 : 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 />