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f <br /> O <br /> certificate of Analysis No. 9409105-12 <br /> Engineering Science, Inc. <br /> 290 Elwood Davis Rd <br /> Liverpool, NY 13088 <br /> ATTN: Martin Miller DATE: 09/26/9' <br /> .r PROJECT: Greyhound #8969 PROJECT NO: 725386.08969 <br /> SITE: Stockton, California MATRIX: SOIL <br /> A SAMPLED BY: Engineering Sciences DATE SAMPLED: 08/31/94 07:55:0[ <br /> SAMPLE ID: SB7-15 DATE RECEIVED: 09/02/94 <br /> ANALYTICAL DATA <br /> PARAMETER RESULTS DETECTION UNITS <br /> LIMIT <br /> BENZENE 50 5 P Ag/Ka <br /> TOLUENE ND 5 p Ag/Ka <br /> ETHYLBENZENE 760 5 P ug/Ka <br /> f TOTAL XYLENE 3100 5 P Ag/Kc <br /> TOTAL VOLATILE AROMATIC HYDROCARBONS 3910 µg/Kg <br /> u Surrogate Recovery <br /> 1, 4-Difluorobenzene 111 « <br /> 4-Bromofluorobenzene 144 <br /> METHOD 8020*** <br /> Analyzed by: JZL <br /> Date: 09/10/94 <br /> Total Petroleum Hydrocarbons-Diesel 16000 400 P mg/kg <br /> Mod. 8015 - Diesel <br /> Analyzed by: SEG <br /> Date: 09/14/94 23 :33:00 <br /> (P) - Practical Quantitation Limit ND - Not detected. <br /> - Recovery beyond control limits. <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 /> j ***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. , -- Pr ect Manager <br />