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6ETTLER - RYAN INC. <br /> May 18, 2004 <br /> G-R Job #386844 <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 21,2004 <br /> Groundwater Monitoring& Sampling Report <br /> Former Chevron Service Station #9-6258 <br /> 2409 East Main at F 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 in 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 I A Potentiomctric 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 /> '?ROFESS/0 <br /> Deanna L Harding ti`� �OP KFGO <br /> Project Coordinator 2 <br /> C.0LU <br /> No C 5$734 m <br /> EXP r" <br /> Hagop Kevork CP�A <br /> P E No C55734 9jel L'1VILOF CALIO)l <br /> Figure I Potentiometric Map <br /> Figure 2 Concentration Map <br /> Table I Groundwater Monitoring Data and Analytical Results <br /> Table 2 Groundwater Analytical Results <br /> Attachments Standard Operating Procedure-Groundwater Sampling <br /> Field Data Sheets <br /> Chain of Custody Document and Laboratory Analytical Reports <br /> i <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 82 • Petaluma, CA 94954 • (707) 789-3255 • Fax (707) 789-3218 <br />