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• <br /> GETTLER - RYAN INC. <br /> November 24,2004 <br /> G-R Job#386392 <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 20,2004 <br /> Groundwater Monitoring& Sampling Report <br /> Chevron Service Station #9-1848 <br /> 1257 Yosemite Avenue <br /> Manteca, 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 /> r <br /> 0 :ESS o/y <br /> canna L Harding Q��pP K EF C� <br /> Project Coordinator ��c• Q, ,p <br /> c� x <br /> No C 5573 4 m <br /> Exp <br /> Hagop Kevork <br /> * <br /> PE No C55734 C1VtL <br /> Figure I Potentiometric Map TF OF C AOF3 <br /> Figure 2 Concentration Map <br /> Table I Groundwater Monitoring Data and Analytical Results <br /> Table 2 Groundwater Analytical Results-Oxygenate Compounds <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 />