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I ETTLER YANNC. <br /> December 8, 2004 <br /> G-R Job #386843 <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 November 10,2004 <br /> Groundwater Monitoring& Sampling Report <br /> Former Chevron Service Station #9-0557 <br /> 139 South Center Street <br /> Stockton, 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 to accordance with G-R. Standard Operating <br /> 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 I <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 /> ESS/p�9 <br /> pP KEV� <br /> Deanna L Harding ��Q 0� <br /> Project Coordinator y <br /> CD No C 55734 rn <br /> ,k Exp. � <br /> Hagop Kevork ClV1L <br /> PE No C55734 F vl%-SFO <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-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 />