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r ` <br /> 0 <br /> Certificate of Analysis No. 9408B74-15 <br /> r � <br /> Engineering Science, Inc. <br /> 290 Elwood Davis Rd <br /> Liverpool, NY 13088 <br /> ATTN: Martin Miller DATE: 09/21/94 <br /> PROJECT: Greyhound Bus Lines 08969 PROJECT NO: 725386.08969 <br /> SITE: Stockton, CA MATRIX: SOIL <br /> 4 SAMPLED BY: Engineering Science, Inc. DATE SAMPLED: 08/29/94 12:03:00 <br /> SA1dPLE ID: SB2-30 DATE RECEIVED: 08/31/94 <br /> ANALYTICAL DATA <br /> PARAMETER RESULTS DETECTION UNITS <br /> LIMIT <br /> BENZENE 2 1 P µg/Kg <br /> TOLUENE ND 1 P ug/Kg <br /> ETHYLBENZENE 23 1 P A91K9 <br /> TOTAL XYLENE 72 1 P µg/Kg <br /> TOTAL VOLATILE AROMATIC HYDROCARBONS 97 µg/Kg <br /> Surrogate Recovery <br /> r 1,4-Dif luorobenzene 75 <br /> 4-Bromofluorobenzene 79 <br /> METHOD 8020*** <br /> Analyzed by: DAO <br /> Date: 09/02/94 <br /> Total Petroleum Hydrocarbons-Diesel 1300 40 P mg/kg <br /> i <br /> Surrogate % Recovery <br /> n-Pentacasane 2800 oc <br /> Mod. 8015 - Diesel <br /> Analyzed by: SEG <br /> 1 Date: 09/09/94 15:52:00 <br /> (P) - Practical Quantitation Limit ND - Not detected. <br /> o - Recovery beyond control limits. <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 # 1903 <br /> 1 <br /> r <br /> SPL, Inc. , - Project ` anager <br />