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ig6ETTLER - RYAN INC. <br /> November 12, 2004 <br /> GR Job 4385121 <br /> Mr Robert Cochran <br /> ChevronTexaco Company <br /> P O Box 6012 Room K2200 <br /> San Ramon CA 94583 <br /> RE: Fourth Quarter Event of October 11, 2004 <br /> Groundwater Monitoring& Sampling Report <br /> Chevron Service Station #9-6171 <br /> 6633 Pacific Avenue <br /> Stockton, California <br /> Dear Mr Cochran <br /> This report documents the most recent groundwater monitoring and sampling event performed by Gettler- <br /> Ryan Inc (G-R) at the referenced site All field work was conducted in accordance with G-R. Standard <br /> Operating Procedure - Groundwater Sampling(attached) <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 <br /> for analyses The field data sheets for this event are attached Analytical results are presented in the table(s) <br /> listed below A Concentration Map is included as Figure 2 The chain of custody document and laboratory <br /> analytical report are also attached <br /> Please call if you have any questions or comments regarding this report Thank you <br /> Sincerely, <br /> D&cn A arding R. O Ffi <br /> Prolect Coordinator �`�'�Q� 0 <br /> LU No C5573 <br /> + * Exp ��� <br /> Hagop Kevork s <br /> P E No C55734 '*9J CIVIL <br /> F 4x <br /> Figure I Potentiometric Map OF 0 AL1Fp <br /> Figure 2 Concentration Map <br /> Table I Groundwater Monitoring Data and Analytical Results <br /> Table 2 Groundwater Analytical Results -Oxygenate Compounds <br /> Table 3 Groundwater Analytical Results <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 />