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INTERNATIONAL ANALYTICAL <br /> TECHNOLOGY <br /> CORPORATION SERVICES <br /> 1 <br /> CERTIFICATE OF ANALYSIS <br /> DATE 07/08192 <br /> CLIENT IT CORPORATION <br /> 4585 Pacheco Blvd. <br /> Martinez, CA 94553 <br />' CONTACT Don Kubik. Jr Project Number 190916 <br /> Four water samples were received by the laboratory on June 30, 1992 <br /> Anai ical Methodoloxy <br />' Samples were analyzed for benzene, toluene, ethylbenzene,and total xylenes by EPA method 8020 -Gas <br /> Chr0mat0graphy/Photoionizat3on detection. Analysis for Total Petroleum Hydrocarbons (gasoline and <br /> diesel were performed by EPA modified method 8015 -Gas Chromatography/Flame Ionization detection <br /> Ouality Control <br />' Prior to sample analysis an initial five point calibration is performed for all methods. On the day of <br /> sample analysis a check standard for each method is analyzed to evaluate instrument performance on that <br /> day Compound response must be within 15% of the rhinal calibration <br /> Matrix spike and matrix spike duplicates are prepared and analyzed at a frequency of 1 per 20 samples <br /> Reviewed and Approved: <br /> Kaprie S Starr for <br /> Emanuel Hignutt,Jr <br /> Analytical Project Manager <br /> American Council of Independent Laboratories <br /> International Association of Environmental Testing Laboratories <br /> American Association for Laboratory Accreditation <br /> IT Field Analytical Services,4585 Pacheco Boulevard,Martinez, CA 94553 681A 1 92 <br />