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i I <br /> ( kx egg AL <br /> RECEIVED ��N 2 6 Z Ol �1�f4l11�RBlil MENT L <br /> F <br /> 23 January 2007 <br /> Mr. Eric Price <br /> Geological Technics Inc. <br /> 1101 7th'Street <br /> ModestoPl CA 95354 <br /> SUBJECT: DATA REPORT - Geological Technics Inc. Project# 1030.2 <br /> 3780 West Linne Road, Tracy, California <br /> TEG Project#70105E <br /> Mr. Price: <br /> Please find enclosed a data report for.the samples analyzed from the above referenced project for <br /> Geological Technics Inc. The samples were analyzed on site in TEG's mobile laboratory. TEG conducted a <br /> total'of-9"analyses on 9 soil vapor samples. <br /> -- 9 analyses on soil vapors for aromatic volatile hydrocarbons (BTEX), methyl-t-butyl ether(MTBE), and <br /> total petroleum hydrocarbons'-gasoline by EPA method 82608. <br /> The results of the analyses are summarized in the enclosed tables. Applicable detection limits and <br /> calibration data are included in the tables. <br /> 1,1 difiuoroethane was used as a leak check compound around the probe rods during the soil vapor <br /> sampling. No 1,1 difluoroethane was detected in any of the vapor samples reported at or above the ©TSC <br /> recommended leak check compound reporting limit of 10 µg/L of vapor. <br /> TEG appreciates the opportunity to have provided analytical services to Geological Technics Inc. on this <br /> project. ',If you have any further questions relating to these data or report, please do not hesitate to contact <br /> us. <br /> Sincerely, <br /> z. I; <br />! Mark Jei pbak <br /> Director; TEG-Northern California <br /> a <br /> Mobile and LaboratoryAnalyticalservices EnvironmentalS6bconsulting GeochemicalR&D SoiiVaporsurveys, AirMonitoring <br /> 11350 Monier Park Place, Rancho Cordova, CA 95742 Phone: (916) 853-8010 Fax: (916) 853-8020 <br /> I <br />