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GETTL i EINC. <br /> September 19, 2005 <br /> G-R Job#386855 <br /> Mr Darin Rouse <br /> ChevronTexaco Company <br /> P O Box 6012, Room K2260 <br /> San Ramon, CA 94583 <br /> RE: Third Quarter Event of July 29,2005 <br /> Groundwater Monitoring& Sampling Report <br /> Former Chevron Service Station#9-8632 <br /> 575 Grant Line Road <br /> Tracy, California <br /> Dear Mr Rouse <br /> This report documents the most recent groundwater monitoring and sampling event performed by Gettler-Ryan <br /> Inc (G-R) at the referenced site All field work was conducted in accordance with G-R Standard Operating <br /> Procedure - Groundwater Sampling (attached) A joint groundwater monitoring event was conducted with <br /> Tosco (Former BP Oil) Service Station #11194, located at 2375 Tracy Boulevard A joint groundwater <br /> monitoring event was scheduled but not conducted on the same date with Unocal (Fortner Scotty's) Service <br /> Station, located at 574 West Grant Line Road,Tracy, California <br /> Static groundwater levels were measured and the wells were checked for the presence of separate-phase <br /> hydrocarbons Static water level data, groundwater elevations, and separate-phase hydrocarbon thickness (if <br /> any) are presented in the attached Table 1 Joint groundwater monitoring data is presented in Tables 3 and 4 A <br /> Potentiometric Map is included as Figure 1 <br /> Groundwater samples were collected from the monitoring wells and submitted to a state certified laboratory for <br /> analyses The field data sheets for this event are attached Analytical results are presented in the table(s) listed <br /> below A Concentration Map is included as Figure 2 The chain of custody document and laboratory analytical <br /> report are also attached <br /> Please call if you have any questions or comments regarding this report Thank you <br /> cerely, <br /> r <br /> O eRQFESSIO <br /> 2 <br /> Deanna L Harding �Q�' �jpP KEL 9� <br /> �� <br /> Project Coordinator �P <br /> 11J No C 5573 rn <br /> * Exp j <br /> Hagop Kevork CP 'k <br /> PE No C55734 9��, C1V11_ <br /> OF CALIFOQ' <br /> Figure 1 Potentiometric Map <br /> Figure 2 Concentration Map <br /> Table 1 Groundwater Monitoring Data and Analytical Results <br /> Table 2 Groundwater Analytical Results <br /> Table 3 Joint Groundwater Monitoring Data-Tosco(Former BP Oil) <br /> Table 4 Joint Groundwater Monitoring Data-Unocal (Former Scotty's) <br /> Attachments Standard Operating Procedure-Groundwater Sampling <br /> Field Data Sheets <br /> Chain of Custody Document and Laboratory Analytical Reports <br /> 6747 Sierra 06urt, Suite J • Dublin, CA 94568 • (925) 551-7555 • Fax (925) 551-7888 <br /> 3140 Gold Camp Drive, Suite 170 • Rancho Cordova, CA 95670 • (916) 631-1300 • Fax (916) 631-1317 <br /> 1364 N McDowell Blvd Suite B2 • Petaluma, CA 94954 • (707) 789-3255 - Fax (707) 789-3218 <br />