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O <br /> Certificate of Analysis No. Eg-9501235-13 <br /> EZ Serve Inc. <br /> 2550 North Loop West, 1600 <br /> Houston, TX 77292 <br /> ATTN: Brian Cobb DATE: 01/18/95 <br /> PROJECT: EZ Serve - Stockton PROJECT NO: 1567 <br /> SITE: Stockton, CA MATRIX: SOIL <br /> SAMPLED BY: Brown & Caldwell DATE SAMPLED: 01/03/95 <br /> SAMPLE ID: VEl-65' DATE RECEIVED: 01/09/95 <br /> ANALYTICAL DATA <br /> PARAMETER RESULTS DETECTION UNITS <br /> LIMIT <br /> BENZENE 540 5 P Ag/Kg <br /> TOLUENE _ 450 5 P pg/Kg <br /> ETHYLBENZENE 25 5 P , pg/Kg <br /> TOTAL XYLENE 280 5 P Ag/Kg <br /> TOTAL VOLATILE AROMATIC HYDROCARBONS 1295 Ag/Kg <br /> Surrogate % Recovery <br /> 1,4-Difluorobenzene 110 <br /> 4-Bromofluorobenzene 108 <br /> METHOD 8020*** <br /> Analyzed by: DAO <br /> Date: 01/11/95 <br /> Petroleum Hydrocarbons - Gasoline 2 .9 0.5 P mg/Kg <br /> Surrogate % Recovery <br /> 1,4-Difluorobenzene 102 <br /> 4-Bromofluorobenzene 126 <br /> Modified 8015 - Gasoline <br /> Analyzed by: DAO <br /> Date: 01/11/95 <br /> (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 /> PL, Inc. , - Project Manager + <br />