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HOUSTON LABORATORY <br /> 8880 INTERCHANGE DRIVE <br /> ® HOUSTON TEXAS 77054 <br /> PHONE(713)660-0901 <br /> Certificate of Analysis No. H9-9506982-07 <br /> EZ Serve Inc <br /> 2550 North Loop West, #600 <br /> Houston, TX 77292 <br /> ATTN Brian Cobb DATE 07/10/95 <br /> PROJECT: EZ-Serve ##100878 PROJECT NO: 1566-04 <br /> SITE : Manteca, CA MATRIX: WATER <br /> SAMPLED BY: Brown & Caldwell DATE SAMPLED: 06/22/95 13 10 00 <br /> SAMPLE ID: 100878 MW-5 DATE RECEIVED: 06/23/95 <br /> ANALYTICAL DATA <br /> PARAMETER RESULTS DETECTION UNITS <br /> LIMIT <br /> BENZENE 130 0 5 P µg/L <br /> TOLUENE 21 0 5 P µg/L <br /> LTHYLBENZENE 240 0 5 P µg/L <br /> TOTAL XYLENE 1200 0 5 P Ag/L <br /> TOTAL VOLATILE AROMATIC HYDROCARBONS 1591 µg/1L <br /> Surrogate % Recovery <br /> 1, 4-Difluorobenzene 97 <br /> 4-Bromofluorobenzene 142 <br /> METHOD 8020*** <br /> Analyzed by LFD <br /> Date 07/05/95 <br /> Petroleum Hydrocarbons - Gasoline 4100 50 P Ag/L <br /> Surrogate $ Recovery <br /> 1 , 4-Difluorobenzene 100 <br /> 4-Bromofluorobenzene 89 <br /> Modified 8015 - Gasoline <br /> Analyzed by LFD <br /> Date 07/05/95 <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 F F <br /> SPL California License # 1903 <br /> E <br /> SPL, Inc -,"Project Mnager <br />