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i <br /> O <br /> Certificate of Analysis No. 9409105-14 <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 08:09:00 <br /> SAMPLE ID: SB7-25 DATE RECEIVED: 09/02/94 <br /> ANALYTICAL DATA <br /> PARAMETER RESULTS DETECTION UNITS <br /> LIMIT <br /> BENZENE ND 5 P µg/Kg <br /> TOLUENE ND 5 P gg/Kg <br /> ETHYLBENZENE 63 5 P µg/Kg <br /> TOTAL XYLENE 330 5 P Ag/Ka <br /> TOTAL VOLATILE AROMATIC HYDROCARBONS 393 Ag/Kg <br /> Surrogate Recovery <br /> 1,4-Difluorobenzene 74 <br /> 4-Bromofluorobenzene 63 <br /> METHOD 8020*** <br /> Analyzed by: JZL <br /> Date: 09/10/94 <br /> Total Petroleum Hydrocarbons-Diesel 9600 200 P mg/kg <br /> Surrogate Recovery <br /> n-Pentacosane 6240 « <br /> Mod. 8015 - Diesel <br /> Analyzed by: SEG <br /> Date: 09/14/94 20: 13: 00 <br /> ND - Not detected. (P) - Practical Quantitation Limit <br /> « - Recovery beyond control limits. <br /> Notes: *Ref: Methods for Chemical Analysis of Water and Wastes, 1983, EPA <br /> r **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 /> � y � <br /> SPL, Inc. , -- Prod t Manager <br />