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O <br /> ZJ2 <br /> Certificate of Analysis No. H9-9412475-10 <br /> EZ Serve Inc. <br /> 2550 North Loop West, #600 <br /> Houston, TX 77292 <br /> ATTN: Brian Cobb DATE: 12/29/94 <br /> PROJECT: EZ SERVE #100966 PROJECT NO: <br /> SITE: Stockto, CA MATRIX: WATER <br /> SAMPLED BY: Brown & Cadwell DATE SAMPLED: 12/09/94 14 : 10: 00 <br /> SAMPLE ID: MW-1FB DATE RECEIVED: 12/11/94 <br /> ANALYTICAL DATA <br /> PARAMETER RESULTS DETECTION UNITS <br /> LIMIT <br /> BENZENE ND 0. 5 P Mg/L <br /> TOLUENE ND 0. 5 P Ag/L <br /> ETHYLBENZENE ND 0. 5 P µg/L <br /> TOTAL XYLENE ND 0. 5 P Ag/L <br /> TOTAL VOLATILE AROMATIC HYDROCARBONS ND µg/L <br /> Surrogate % Recovery <br /> 1,4--Difluorobenzene 97 <br /> 4-Bromofluorobenzene 99 <br /> METHOD 8020*** <br /> Analyzed by: YN <br /> Date: 12/16/94 <br /> Petroleum Hydrocarbons - Gasoline ND 0. 05 P mg/L <br /> Surrogate Recovery <br /> 1, 4-Difluorobenzene 102 <br /> 4-Bromofluorobenzene 95 <br /> Modified 8015 - Gasoline <br /> Analyzed by: YN <br /> Date: 12/16/94 <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. , - Project Manager <br />