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i <br /> GETTLER - RYAN INC. <br /> May 10,2005 <br /> G-R Job#386463 <br /> Mr Darin Rouse <br /> ChevronTexaco Company <br /> P O Box 6012, Room K2260 <br /> San Ramon, CA 94583 <br /> RE: Second Quarter Event of April 5,2005 <br /> Groundwater Monitoring& Sampling Report <br /> Chevron Service Station #9-3232 <br /> 8660 Lower Sacramento Road <br /> Stockton, California <br /> Dear Mr Rouse <br /> This report documents the most recent groundwater monitoring and sampling events 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 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 /> QnOF1=Ss/a <br /> Deanna L Harding �� GOP KCL <br /> C�3 <br /> Project Coordinator ,Z <br /> CO <br /> No C 55734 M <br /> * Exp .X? <br /> Hagop Kevork <br /> P E No C55734 9��c- C V14 <br /> OF M.IF�4� <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 /> 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 />