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HOUSTON LABORATORY <br /> 8880 INTERCHANGE DRIVE <br /> HOUSTON, TEXAS 77054 <br /> ® <br /> ertificate of Analysis No. H9-9801744-02 PHONE (713)660-0901 <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-2 DATE RECEIVED: 01/17/98 <br /> ANALYTICAL DATA <br /> PARAMETER RESULTS DETECTION UNITS <br /> LIMIT <br /> MTBE 33000 2500 P Ag/L <br /> Benzene ND 0 . 5 P Ag/L <br /> Toluene ND 1 . 0 P p,g/L <br /> Ethylbenzene ND 1 . 0 P µg/L <br /> Total Xylene ND 1 . 0 P Ag/L <br /> Surrogate % Recovery <br /> 1, 4-Difluorobenzene 97 <br /> 4-Bromofluorobenzene 99 <br /> Method 8020A*** <br /> tr ` ' <br /> Analyzed b DN <br /> Date : 01/22/98 <br /> Gasoline Range Organics 36 5 P mg/L <br /> Surrogate % Recovery <br /> 1, 4-Difluorobenzene 73 <br /> 4-Bromofluorobenzene 107 <br /> California LUFT Manual for Gasoline <br /> Analyzed by: DN <br /> Date : 0 ./21/98 03 : 00 : 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 />