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4 <br /> Certificate of Analysis No. 9409105-04 <br /> Engineering Science, Inc. <br /> 290 Elwood Davis Rd <br /> Liverpool, NY 13088 <br /> ATTN: Martin Miller DATE: 09/26/9L <br /> PROJECT: Greyhound 08969 PROJECT NO: 725386.08969 <br /> BITE: Stockton, California MATRIX: SOIL <br /> SAMPLED BY: Engineering Sciences DATE SAMPLED: 08/30/94 14: 04:OC <br /> SAMPLE ID: SB6-20 DATE RECEIVED: 09/02/94 <br /> ANALYTICAL DATA <br /> PARAMETER RESULTS DETECTION UNITS <br /> LIMIT <br /> BENZENE ND 1 P µg/Kg <br /> TOLUENE ND 1 P gg/Kg <br /> ETHYLBENZENE ND 1 P gg/Kg <br /> TOTAL XYLENE 1 1 P Ag/Kg <br /> TOTAL VOLATILE AROMATIC HYDROCARBONS 1 µg/Kg <br /> I <br /> surrogate Recovery <br /> 1,4-Difluorobenzene 80 <br /> 4-Bromofluorobenzene 81 <br /> METHOD 8020*** <br /> Analyzed by: DAO <br /> Date: 09/10/94 <br /> Total Petroleum Hydrocarbons-Diesel ND 1 P mg/kg <br /> Surrogate Recovery <br /> _ n-Pentacosane 137 <br /> Mod. 8015 - Diesel <br /> Analyzed by: SEG <br /> Date: 09/13/94 17:59:00 <br /> ND - Not detected. (P) - Practical Quantitation Limit <br /> 4 <br /> f 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 /> r SPL, Inc. , - Projed3. Manager <br />