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f <br /> 3 <br /> i <br /> 0 <br /> Certificate of Analysis No. 9408B76-42 <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 18969 PROJECT NO: 725386.08969 <br /> r SITE: Stockton, CA MATRIX: SOIL <br /> SAMPLED BY: Engineering Science, Inc. DATE SAMPLED: 08/30/94 10:51:00 <br /> SAMPLE ID: SB5 30 DATE RECEIVED. 08/31/94 <br />' ANALYTICAL DATA <br /> PARAMETER RESULTS DETECTION UNITS <br /> LIMIT <br /> 1 BENZENE ND 1 P µg/Kg <br /> TOLUENE ND 1 P gg/Kg <br /> ETHYLBENZENE ND 1 P µg/Kg <br /> TOTAL XYLENE ND 1 P Ag/Kg <br />' TOTAL VOLATILE AROMATIC HYDROCARBONS ND Ag/Kg <br /> Surrogate $ Recovery <br /> 1,4-Difluorobenzene 81 <br /> 4-Bromofluorobenzene 98 <br /> METHOD 8020*** <br /> r� Analyzed by: SLB <br /> Date: 09/08/94 <br /> Total Petroleum Hydrocarbons-Diesel 1.1 1 P mg/kg <br /> Surrogate Recovery <br /> n-Pentacosane 107 <br /> Mod. 8015 - Diesel <br /> Analyzed by: SEG <br /> Date: 09/10/94 22:44:00 <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 /> SPL, Inc. , - ProjOct Manager <br />