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I' <br /> s <br /> u <br /> O <br /> Certificate of Analysis No. 9408B76-43 <br /> � Engineering Science, Inc. <br /> 290 Elwood Davis Rd <br /> Liverpool, NY 13088 <br /> i ATTN: Martin Miller DATE: 09/21/94 <br /> PROJECT: Greyhound Bus Lines , 8969 PROJECT NO: 725386.08969 <br /> SITE: Stockton, CA MATRIX: SOIL <br /> SAMPLED BY: Engineering Science, Inc. DATE SAMPLED: 08/30/94 11:00:00 <br /> d SAMPLE ID: SB5-35 DATE RECEIVED: 08/31/94 <br /> ANALYTICAL DATA <br /> PARAMETER RESULTS DETECTION UNITS <br /> r LIMIT <br />( BENZENE ND 1 P gg/Kg <br /> TOLUENE ND 1 P Ag/Kg <br /> ETHYLBENZENE ND 1 P gg/Kg <br /> TOTAL XYLENE ND 1 P Ag/Kg <br /> TOTAL VOLATILE AROMATIC HYDROCARBONS ND µg/Kg <br /> Surrogate % Recovery <br /> 1,4-Difluorobenzene 83 <br /> 4-Bromofluorobenzene 96 <br /> METHOD 8020*** <br /> Analyzed by: SLB <br />�1 Date: 09/08/94 <br /> Total Petroleum Hydrocarbons-Diesel ND 1 P mg/kg <br /> Surrogate % Recovery <br /> n-Pentacosane 85 <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 /> f Notes: *Ref: Methods for Chemical Analysis of <br /> y 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 /> i <br /> SPL California License , 1903 <br /> SPL, Inc. , - Pro ct Manager <br />