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CI k! <br /> j J <br /> ig 6ETTLER - RYAN1c. <br /> N <br /> June 1, 2005 <br /> G-R Job#386854 <br /> Mr Darin Rouse <br /> ChevronTexaco Company <br /> P O Box 6012, Room K2260 <br /> San Ramon,CA 94583 <br /> RE: Second Quarter Event of April 28, 2005 <br /> Groundwater Monitoring& Sampling Report <br /> Chevron Service Station #9-8264 <br /> 3775 Tracy Boulevard <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 Shell <br /> Service Station, located at 3725 South Tracy Boulevard, 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 A 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 /> Sincerely, <br /> �%oNAL G <br /> /IwoC <br /> Deanna L Harding �c Q �� O <br /> Project Coordinator c N " <br /> N <br /> Cc No 7504 <br /> Robert A Lauritzen AGF CALIFO� <br /> Senior Geologist, P G No 7504 <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 Groundwater Analytical Results <br /> Table 4 Joint Groundwater Monitoring Data-Shell <br /> Attachments Standard Operating Procedure-Groundwater Sampling <br /> Field Data Sheets <br /> Chain of Custody Document and Laboratory Analytical Reports <br /> 6747 Sierra Court, 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 />