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O <br /> Certificate of Analysis No. 940OB74-14 <br /> Engineering Science, Inc. <br /> 290 Elwood Davis Rd <br /> Liverpool, NY 13088 <br /> ATTN: Martin Miller DATE: 09/21/94 <br /> 1 <br /> PROJECT: Greyhound Bus Lines 08969 PROJECT NO: 725386.08969 <br /> SITE: Stockton, CA MATRIX: SOIL <br />' SAMPLED BY: Engineering Science, Inc. DATE SAMPLED: 0-9729/94 11:55:00 <br /> SAMPLE ID: SB2-25 DATE RECEIVED: 08/31/94 <br /> ANALYTICAL DATA -°_,..,...._...,-- <br /> PAVI M TER RESULTS DETECTION UNITS <br /> LIMIT <br /> BENZENE ND 5 P µg/Kg <br /> TOLUENE ND 5 P Ag/Kg <br /> ETHYLBENZENE 44/ 5 P Ag/Kg <br /> TOTAL XYLENE .1-9O�pem 5 P µg/Kg <br /> TOTAL VOLATILE AROMATIC HYDROCARBONS .23.4 µg/Kg <br /> Surrogate Recovery <br /> 1,4-Difluorobenzene 78� <br /> 4-Bromofluorobenzene 97 <br /> METHOD 8020*** <br /> Analyzed by: DAO <br /> Date: 09/02/94 <br /> Total Petroleum Hydrocarbons-Diesel 2900 200 P mg/kg <br /> f Mod. 8015 - Diesel <br /> Analyzed by: SEG <br /> Date: 09/09/94 15:52:00 <br /> ND - Not detected. (P) - Practical Quantitation Limit <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 /> QUALITY ASSURANCE: These analyses are performed in accordance <br /> with EPA guidelines for quality assurance. <br /> SPL California License 0 1903 <br /> SPL, Inc. , - Projtpt Manager <br />