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• <br /> 6ETTLER - RYAN Inc. <br /> May 24, 2004 <br /> G-R Job 4386854 <br /> Mr Robert Cochran <br /> ChevronTexaco Company <br /> P O Box 6012, Room K2200 <br /> San Ramon, CA 94583 <br /> RE. Second Quarter Event of April 26,2004 <br /> Groundwater Monitoring& Sampling Report <br /> Chevron Service Station #9-8264 <br /> 3775 Tracy Boulevard <br /> Tracy, California <br /> Dear Mr Cochran <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 /> C�A-rru�uv����G F E <br /> _ pRB SS/O <br /> Deanna LHarding �`��GOp KEL0 <br /> Project Coordinatorco <br /> 2� <br /> 9"�KNo C 55734 ' <br /> ' * Exp <br /> Hagop Kevork <br /> P E No C55734 9j MIX- <br /> Figure <br /> IMEFigure 1 Potentiometric Map <br /> � OF C AI.1F�'P <br /> Figure 2 Concentration Map <br /> Table I 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 />