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oig6ETTLER - RYAN I <br /> August 18, 2004 <br /> G-R Job ##386854 <br /> Mr Robert Cochran <br /> ChevronTexaco Company <br /> P O Box 6012, Room K2200 <br /> San Ramon, CA 94583 <br /> RE Third Quarter Event of July 26,2004 <br /> Gioundwatei Monitottng& 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 /> Q?,04 E 3510r� <br /> Deanna L Harding <;, C? C7 <br /> Project Coordinator �� _� �� e;, <br /> LU LU No C 55734 m <br /> CC* EXP t.�(2 <br /> Hagop Kevorkq CMI- <br /> PE No C55734 rF OF 0 AO� <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 i • 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 />