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O <br /> Certificate of Analysis No. H9-9503A37-04 <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 0100878 PROJECT NO: 1565-04 <br /> SITE: Manteca, California MATRIX: WATER <br /> SAMPLED BY: Brown & Caldwell DATE SAMPLED: 03/24/95 09:35:00 <br /> SAMPLE ID: 100878-MW-4 DATE RECEIVED: 03/25/95 <br /> ANALYTICAL DATA <br /> PARAMETER RESULTS DETECTION UNITS <br /> LIMIT <br /> BENZENE ND 0.5 P ug/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 pg/L <br /> Surrogate Recovery <br /> 1, 4-Difluorobenzene 99 <br /> 4-Bromofluorobenzene 92 <br /> METHOD 8020*** <br /> Analyzed by: DAO <br /> Date: 03/31/95 <br /> Petroleum Hydrocarbons - Gasoline ND 50 P µg/L <br /> Surrogate $ Recovery <br /> 1, 4-Dif luorobenzene 97 <br /> 4-Bromofluorobenzene 157 « <br /> Modified 8015 - Gasoline <br /> Analyzed by: DAO <br /> Date: 03/31/95 <br /> ND - Not detected. (P) - Practical Quantitation Limit <br /> « - Recovery beyond control limits. <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, 3`rd Ed. <br /> r If I <br /> I' QUALITY ASSURANCE: These analyses are performed in accordance <br /> with EPA, guidelines for quality assurance. <br /> SPL Califor+nia License # 1903 <br /> I r <br /> II <br /> I. ,11 <br /> I r IF ` I <br /> r i <br /> ! r <br /> L, Inc. , - Project Manager <br /> i I r f f f E i <br /> Til <br />