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maze <br /> Certificate of Analysis No. 940OB76-34 <br /> Engineering Science, Inc. <br /> 290 Elwood Davis Rd <br /> Liverpool, NY 13088 <br />�f ATTN: Martin Miller DATE: 09/21/94 <br /> a <br /> PROJECT: Greyhound Bus Lines 08969 PROJECT NO: 725386.08969 <br /> SITE: Stockton, CA MATRIX: SOIL <br /> SAMPLED BY: Engineering Science, Inc. DATE SAMPLED: 08/30/94 08:30:00 <br />' SAMPLE ID: SB4-35 DATE RECEIVED: 08/31/94 <br /> - - <br /> ANALYTICAL DATA <br /> PARAMETER RESULTS DETECTION UNITS <br /> LIMIT <br /> BENZENE <br /> ` BENZENE ND 1 P µg/Kg <br /> TOLUENE ND 1 P µg/Kg <br /> ETHYLBENZENE ND 1 P µg/Kg <br /> TOTAL XYLENE ND 1 P µg/Kg <br /> t f TOTAL VOLATILE AROMATIC HYDROCARBONS ND µg/Kg <br /> Surrogate % Recovery <br /> 1,4-Difluorobenzene 83 <br /> 4-Bromofluorobenzene 113 <br /> METHOD 8020*** <br /> Analyzed by: SLB <br /> Date: 09/07/94 <br /> Total Petroleum Hydrocarbons-Diesel 1.2 1 P mg/kg <br /> Surrogate t Recovery <br /> n-Pentacosane 77 <br /> Mod. 8015 - Diesel <br /> + Analyzed by: SEG <br /> Date: 09/10/94 22:44:00 <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 /> 4 SPL California License 1903 <br /> SPL, Inc. , - Project Manager <br />