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O <br /> Certificate of Analysis No. H9-9503A37-10 <br /> EZ Serve Inc. <br /> 2550 North Loop West, ,#600 <br /> Houston, TX 77292 <br /> ATTN: Brian Cobb DATE: 04/04/95 <br /> PROJECT: EZ-Serves , 100878 PROJECT NO: 1565-04 <br /> SITES Manteca, California MATRIX: WATER <br /> SAMPLED BY: Brown & Caldwell DATE SAMPLED: 03/24/95 12 :40:00 <br /> SAMPLE ID: 100878-MW-2FB DATE RECEIVED: 03/25/95 <br /> ANALYTICAL DATA <br /> PARAMETER RESULTS DETECTION UNITS <br /> LIMIT <br /> BENZENE _ ND 0.5 P pg/L <br /> TOLUENE ND 0.5 P µg/L <br /> ETHYLBENZENE ND 0.5 P µg/L <br /> TOTAL XYLENE ND 0.5 P µg/L <br /> TOTAL VOLATILE AROMATIC HYDROCARBONS ND µg/L <br /> Surrogate Recovery <br /> 1,4-Difluorobenzene 98 <br /> 4-Bromofluorobenzene 91 <br /> METHOD 8020*** <br /> Analyzed by: DAO <br /> Date: 03/30/95 <br /> Petroleum Hydrocarbons - Gasoline ND 50 P µg/L <br /> Surrogate Recovery <br /> 1,4-Difluorobenzene 95 <br /> 4-Bromofluorobenzene 99 <br /> Modified 8015 - Gasoline <br /> Analyzed by: DAO <br /> Date: 03/30/95 <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 /> i <br /> QUALITY ASSURANCE: These analyses are performed in accordance <br /> with EPA guidelines for quality assurance. <br /> I SPLs California License #' 1903 i <br /> I i <br /> E ' SIP L, Vic. - Project Manager <br /> I <br /> I Ilii` �If I� <br /> hlI <br /> l �I <br />