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HOUSTON LABORATORY <br /> 6880 INTERCHANGE DRIVE <br /> HOUSTON,TEXAS 77054 <br /> p PHONE(713)660.0901 <br /> Certificate of Analysis No. H9-9903B99-08 <br /> BP Oil Company <br /> 295 SW 41 Street B1dg. 13 , SteN P .O. # <br /> Renton, WA 98055 NA , COC#118682 <br /> ATTN: Scott Hooton DATE : 04/07/99 <br /> PROJECT: #11195 , 16500 I-5 PROJECT NO: 990322R-2 <br /> SITE: Lathrop MATRIX: WATER <br /> SAMPLED BY: Blaine Tech Services DATE SAMPLED: 03/22/99 1.7 : 25 : 00 <br /> SAMPLE ID: H DATE RECEIVED: 03/27/99 <br /> ANALYTICAL DATA <br /> PARAMETER RESULTS DETECTION UNITS <br /> LIMIT <br /> MTBE 95000 250 P ug/L <br /> BENZENE ND 2S P ug/L <br /> TOLUENE ND 25 P ug/L <br /> ETHYLBENZENE ND 25 P ug/L <br /> TOTAL XYLENE ND 25 P ug/L <br /> TOTAL VOLATILE AROMATIC HYDROCARBONS ND ug/L <br /> Surrogate % Recovery <br /> 1, 4-Difluorobenzene 109 <br /> 4-Bromofluorobenzene 104 <br /> Method 8020A *** <br /> Analyzed by: LJ <br /> Date : 03/30/99 <br /> Gasoline Range Organics 85 1 . 25 P mg/L <br /> Surrogate % Recovery <br /> 1, 4-Difluorobenzene 89 <br /> 4-Bromofluorobenzene 92 <br /> California LUFT Manual for Gasoline <br /> Analyzed by: LJ <br /> Date : 03/29/99 23 : 39 : 00 <br /> Diesel Range Organics 0 . 10 0 . 05 P mg/L <br /> Surrogate % Recovery <br /> n-Pentacosane 62 <br /> California LUFT Manual for Diesel <br /> Analyzed by: RR <br /> Date : 04/01/99 03 :46 : 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 />