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r-� <br /> HOUSTON LABORATORY <br /> 8880 INTERCHANGE DRIVE <br /> !. <br /> HOUSTON, TEXAS 77054 <br /> ertificate of Analysis No. H9-9805371-05 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#098772 <br /> ATTN: Scott Hooton 05/22/98 <br /> PROJECT: #11195 , N/A PROJECT NO: 10-151-6-3 <br /> „- SITE: Lathrop, CA MATRIX: WATER <br /> SAMPLED BY: Alisto Engineering DATE SAMPLED: 05/07/98 <br /> SAMPLE ID: S-5 DATE RECEIVED: 05/08/98 <br /> ANALYTICAL DATA <br /> PARAMETER RESULTS PQL* UNITS <br /> r Benzene ND 5 ug/L <br /> Ethylbenzene 15 5 ug/L <br /> Toluene ND 5 ug/L <br /> Xylenes (total) ND 5 ug/L <br /> Methyl t-Butyl Ether 880 500 ug/L <br /> '- t-Butyl Alcohol ND 500 ug/L <br /> Di-Isopropyl Ether ND 10 ug/L <br /> ? . tert-Amyl Methyl Ether ND 10 ug/L <br /> Ethyl t-Butyl Ether ND 10 ug/L <br /> SURROGATES AMOUNT % LOWER UPPER <br /> SPIKED RECOVERY LIMIT LIMIT <br /> 1, 2-Dichloroethane-d4 50 u9l L 102 76 114 <br /> Toluene-d8 50 ug/L 98 88 110 <br /> 4-Bromofluorobenzene 50 ug/L 108 86 115 <br /> ANALYZED BY: JC DATE/TIME: 05/14/98 11: 09 : 00 <br /> METHOD: 8260 Water, Volatile Organics <br /> NOTES: * -- Practical Quantitation Limit ND - Not Detected <br /> NA - Not Analyzed <br /> COMMENTS: <br /> fs:J <br /> ! <br /> QUALITY ASSURANCE: These analyses are performed in accordance <br /> with EPA guidelines for quality assurance. <br /> SPL California License # 1903 <br />