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r <br /> 4 <br /> Certificate of Analysis No. 940SB70-02 <br /> Engineering Science, Inc. <br /> r <br /> 290 Elwood Davis Rd <br /> Liverpool, NY 13088 ' <br /> ATTN: Martin Miller DATE: 09/21/94 <br /> PROJECT: Greyhound _Bus Lines PROJECT NO: 725386. 08969 <br /> SITE: -Stockton, CA MATRIX: WATER F <br /> SAMPLED BY: Engineering Science, Inc. DATE SAMPLED: 08/30/94 12 :29:00 <br /> SAMPLE ID: MW-1 DATE RECEIVED: 08/31/94 <br /> ANALYTICAL DATA <br /> PARAMETER RESULTS DETECTION UNITS <br /> LIMIT <br /> BENZENE ND 0.5 P Ag/L <br /> TOLUENE - ND 0. 5 P µg/L <br /> ETHYLBENZENE ND 0. 5 P µg/L <br /> TOTAL XYLENE ND 0. 5 P Ag/L <br /> TOTAL VOLATILE AROMATIC HYDROCARBONS ND Ag/L <br /> Surrogate Recovery <br /> 1,4-Difluorobenzene 92 <br /> 4-Bromof luorobenzene 60 <br /> METHOD 8020*** <br /> Analyzed by: MOO <br /> Date: 09/12/94 <br /> Total Petroleum Hydrocarbons-Diesel 0. 08 0. 05 P mg/L <br /> Surrogate Recovery <br /> n-Pentacosane 69 <br /> Mod. 8015 - Diesel <br /> Analyzed by: SG <br /> Date: 09/06/94 21: 36 : 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 # 1903 <br /> SPL, Inc. , - Pro] � t Manager <br />