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HOUSTON LABORATORY <br /> 8880 INTERCHANGE DRIVE <br />• ® HOUSTON TEXAS 77054 <br /> PHONE(713)650-0909011 <br /> Certificate of Analysis No. H9-9506462-01 <br /> Engineering Science, Inc. <br /> 290 Elwood Davis Rd <br /> Liverpool, NY 13088 <br /> ATTN: Martin Miller DATE: 06/23/95 <br /> PROJECT: Greyhound Stockton PROJECT NO: 727211.08969 <br /> SITE: Stockton MATRIX: WATER <br /> SAMPLED BY: Engineering Science DATE SAMPLED: 06/08/95 11:40:00 <br /> SAMPLE ID: MW-1 DATE RECEIVED: 06/12/95 <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 pg/L <br /> TOTAL XYLENE ND 0. 5 P µg/L <br /> TOTAL VOLATILE AROMATIC HYDROCARBONS ND µg/L <br /> Surrogate Recovery <br /> 1, 4-Dif luorobenzene 100 <br /> 4-Bromofluorobenzene 101 <br />• METHOD 8020*** <br /> Analyzed by: RR <br /> Date: 06/20/95 <br /> Total Petroleum Hydrocarbons-Diesel ND 0. 05 P mg/L <br /> Surrogate Recovery <br /> o-Terphenyl 87 <br /> 2-Fluorobiphenyl 44 <br /> Mod. 8015 - Diesel <br /> Analyzed by: SEG <br /> Date: 06/16/95 05:20 : 00 <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, 17th 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 /> 4�L_ WT>K� <br /> SPL, Inc. , - Pro ct Manager <br />