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HOUSTON LABORATORY <br /> 8880 INTERCHANGE DRIVE <br /> HOUSTON,TEXAS 77054 <br /> ertificate of Analysis No. H9-9801744-07 PHONE (713)660-0901 ,f <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-7 DATE RECEIVED: 01/17/98 <br /> ANALYTICAL DATA <br /> PARAMETER RESULTS DETECTION UNITS <br /> LIMIT <br /> MTBE 18000 1000 P Ag/L <br /> Benzene 6 . 6 5 P ug/L <br /> Toluene ND 10 P t.g/L <br /> Ethylbenzene ND 10 P jug/L <br /> Total Xylene ND 10 P Ag/L <br /> Surrogate % Recovery <br /> 1, 4--Difluorobenzene 97 <br /> 4-Bromofluorobenzene 100 <br /> Method 8020A*** <br /> Analyzed by: DNr ^ <br /> Date : 01/21/98 <br /> Gasoline Range Organics 19 5 P mg/L <br /> Surrogate % Recovery <br /> 1 , 4-Difluorobenzene 70 <br /> 4-Bromofluorobenzene 103 <br /> California LUFT Manual for Gasoline <br /> Analyzed by: DN <br /> Date : 01/21/98 05 : 14 : 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 />