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O <br /> Certificate of Analysis No. H9-9412474-08 <br /> EZ Serve Inc. <br /> 2550 North Loop West, #600 <br /> Houston, TX 77292 <br /> ATTN: Brian Cobb DATE: 12/30/94 <br /> PROJECT: EZ SERVE #100878 PROJECT NO: 100878 <br /> SITE: Manteca, CA MATRIX: WATER <br /> SAMPLED BY: Brown & Cadwell DATE SAMPLED: 12/08/94 12 :20:00 <br /> SAMPLE ID: MW-7FB DATE RECEIVED: 12/11/94 <br /> ANALYTICAL DATA <br /> PARAMETER RESULTS DETECTION UNITS <br /> LIMIT <br /> BENZENE ND 0. 5 P µg/L <br /> TOLUENE ND 0. 5 P ug/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 96 <br /> 4-Bromofluorobenzene 96 <br /> METHOD 8020*** <br /> Analyzed by: YN <br /> Date: 12/17/94 <br /> Petroleum Hydrocarbons - Gasoline ND 0.05 P mg/L <br /> Surrogate Recovery <br /> 1,4-Difluorobenzene 103 <br /> 4-Bromofluorobenzene 76 <br /> Modified 8015 - Gasoline <br /> Analyzed by: YN <br /> , Date: 12/17/94 <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 /> E <br /> QUALITY ASSURANCE: These analyses are performed in accordance <br /> with EPA guidelines for quality assurance. <br /> ' SPL California License # 1903 <br /> jS:K <br /> , -Inc. , -- ro j ect Manager 1 <br /> I I if l' �' I I IE it ! II 11 { I III I i I I ! kl li I II 1 I p ifs <br /> k I <br />