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L <br /> HOUSTON LABORATORY <br /> 8880 INTERCHANGE DRIVE <br /> O <br /> HOUSTON, TEXAS 77054 <br /> ertiflcate of Analysi-s No. H9-9910418-20 PHONE(713)fi600s01 <br /> BP Oil Company P O # <br /> 295 SW 41st Bldg 13 , Ste N <br /> Renton, WA 98055 J131881 , COC4100527 <br /> ATTN Scott Hooton 11/08/99 <br /> PROJECT: #11193 , 3202 W Hammer Lane PROJECT NO: 852-1530 <br /> SITE: Stockton CA MATRIX: WATER <br /> SAMPLED BY: Cambria Env Technology DATE SAMPLED: 10/08/99 11 20 00 <br /> SAMPLE ID: CB-5-16 HP DATE RECEIVED: 10/12/99 <br /> ANALYTICAL DATA <br /> PARAMETER RESULTS PQL* UNITS <br /> Benzene ND 5 ug/L <br /> Ethylbenzene ND 5 ug/L <br /> Toluene ND 5 ug/L <br /> Xylenes (total) ND 5 ug/L <br /> Methyl t-Butyl Ether 17 10 ug/L <br /> Tert-Amyl Methyl ether ND 10 ug/L <br /> SURROGATES AMOUNT % LOWER UPPER <br /> SPIKED RECOVERY LIMIT LIMIT <br /> 1, 2-Dichloroethane-d4 50 ug/L 90 80 120 <br /> . Toluene-d8 50 ug/L 94 88 110 <br /> 4--Bromofluorobenzene 50 ug/L 86 86 115 <br /> ANALYZED BY HLW DATE/TIME 10/15/99 16 42 . 00 _ <br /> METHOD 8260 Water, Volatile Organics <br /> NOTES * - Practical Quantitation Limit ND - Not Detected <br /> NA - Not Analyzed <br /> COMMENTS: <br /> • <br /> QUALITY ASSURANCE: These analyses are performed in accordance <br /> with EPA guidelines for quality assurance <br /> SPL California License # 1903 <br />