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O <br /> Certificate Of Analysis No. 9408876-29 <br /> Engineering Science, Inc. <br /> 290 Elwood Davis Rd <br /> Liverpool, NY 13088 <br /> ATTN: Martin Miller DATE: 09/21/94 <br /> PROJECT: Greyhound Bus Lines x#8969 PROJECT NO: 725386.08969 <br /> SITE: Stockton, CA MATRIX: SOIL <br /> SAMPLED BY: Engineering Science, Inc. DATE SAMPLED: 08/30/94 07:50:00 <br /> SAMPLE ID: SB4-10 DATE RECEIVED: 08/31/94 <br /> ANALYTICAL DATA <br /> PARAMETER RESULTS DETECTION UNITS <br /> BENZENE LIMIT <br /> ND 1 P µg/Kg <br /> TOLUENE ND 1 P Mg/Kg <br /> ETHYLBENZENE ND 1 P µg/Kg <br /> TOTAL XYLENE 1 1 P Ag/Kg <br /> TOTAL VOLATILE AROMATIC HYDROCARBONS 1 ug/Kg <br /> 11b Surrogate Recovery <br /> g <br /> 1,4-Difluorobenzene 82 <br /> 4-Bromofluorobenzene 106 <br /> METHOD 8020*** <br /> Analyzed by: SLB <br /> Date: 09/08/94 <br /> Total Petroleum Hydrocarbons-Diesel 3 .7 1 P mg/kg <br /> surrogate Recovery <br /> n-Pentacosane 82 <br /> Mod. 8015 - Diesel <br /> Analyzed by: SEG <br /> t Date: 09/09/94 15:52:00 <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 J 1903 <br /> SPL, Inc. , - Pr ect Manager <br /> ,_ r <br />