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t <br /> w <br /> a <br /> Certificate of Analysis No. 94091OS-11 <br /> Engineering Science, Inc. <br /> 290 Elwood Davis Rd <br /> Liverpool, NY 13088 <br /> ATTN: Martin Miller DATE: 09/26/92 <br /> PROJECT: Greyhound 18969 PROJECT NO: 725386.08969 <br /> SITE: Stockton, California MATRIX: SOIL <br /> SAMPLED BY: Engineering Sciences DATE SAMPLED: 08/31/94 07:49:OC <br /> SAMPLE ID: SB7-10 DATE RECEIVED: 09/02/94 <br /> ANALYTICAL DATA <br /> PARAMETER RESULTS DETECTION UNITE <br /> t BENZENE LIMIT <br /> ND 1 P gg/Kg <br /> TOLUENE Ag/Kc <br /> ` 1 ETHYLBENZENE ND 1 P µg/Ka <br /> TOTAL XYLENE ND 1 P µg/Ka <br /> TOTAL VOLATILE AROMATIC HYDROCARBONS ND µg/K9 <br /> Surrogate Recovery <br /> 1,4-Difluorobenzene 80 <br /> 4-Bromofluorobenzene 79 <br /> METHOD 8020*** <br /> Analyzed by: JZL <br /> 1 <br /> Date: 09/10/94 <br /> Total Petroleum Hydrocarbons-Diesel 2.8 1 P mg/kg <br /> s <br /> Surrogate g � Recovery <br /> n-Pentacosane 134 <br /> Mod. 8015 - Diesel <br /> r� Analyzed by: SEG <br /> Date: 09/13/94 17:59:00 <br /> ND - Not detected. (P) - Practical Quantitation Limit <br /> i <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 /> j <br /> QUALITY ASSURANCE: These analyses are performed in accordance <br /> with EPA guidelines for quality assurance. <br /> SPL California License # 1903 <br /> l <br /> SPL, Inc. , - Pro ct Manager <br />