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HOUSTON LABORATORY <br /> 8880 INTERCHANGE DRIVE <br /> HOUSTON TEXAS 77054 <br /> ® PHONE(713)660 0901 IM Alie <br /> • Certificate of Analysis No. H9-9509266-04 <br /> Engineering Science, Inc <br /> 290 Elwood Davis Rd <br /> Liverpool , NY 13088 <br /> ATTN Martin Miller DATE 09/19/95 <br /> PROJECT: Water Analysis PROJECT NO: 727211 08969 <br /> SITE: Greyhound Stockton, CA MATRIX: WATER <br /> SAMPLED BY: Provided by SPL DATE SAMPLED: 08/07/95 <br /> SAMPLE ID: Trip Blank DATE RECEIVED: 09/08/95 <br /> ANALYTICAL DATA <br /> PARAMETER RESULTS DETECTION UNITS <br /> LIMIT <br /> BENZENE ND 0 5 P µg/L <br /> TOLUENE ND 0 5 P µg/L <br /> ETHYLBENZENE ND 0 5 P jug/L <br /> TOTAL XYLENE ND 0 5 P jug/L <br /> TOTAL VOLATILE AROMATIC HYDROCARBONS ND Ag/L <br /> Surrogate % Recovery <br /> 1 , 4-Difluorobenzene 99 <br /> 4-Bromofluorobenzene 1.34 <br /> . METHOD 8020*** <br /> Analyzed by DAO <br /> Date 09/09/95 <br /> ND - Not detected (P) - Practical. Quantitation Limit <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 /> SPL, Inc - Project Manag4Ir <br /> k k <br />