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HOUSTON LABORATORY <br /> 8880 INTERCHANGE DRIVE <br /> HOUSTON, TEXAS 77054 <br /> n PHONE(713)660-0901 <br /> ertificate of Analysis No. H9-9801744-05 <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-5 DATE RECEIVED: 01/17/98 <br /> ANALYTICAL DATA <br /> PARAMETER RESULTS DETECTION UNITS <br /> LIMIT <br /> MTBE 21000 2500 P µg/L <br /> Benzene 20 5 P Ag/L <br /> Toluene ND 10 P k.g/L <br /> Ethylbenzene ND 10 P t,g/L <br /> Total Xylene ND 10 P �g/L <br /> Surrogate % Recovery <br /> 1, 4-Difluorobenzene 100 <br /> 4-Bromofluorobenzene 100 <br /> Method 8020A*** <br /> Analyzed by: DN <br /> Date : 01/22/98 <br /> Gasoline Range Organics 24 5 P mg/L <br /> Surrogate a Recovery <br /> 1, 4-Difluorobenzene 73 <br /> 4-Bromofluorobenzene 97 <br /> California LUFT Manual for Gasoline <br /> Analyzed by: DN <br /> Date : 01/21/98 04 : 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 />