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i <br /> GETTLER - RYANINC. <br /> September 15, 2005 <br /> G-R Job #386847 <br /> Mr Darin Rouse , <br /> ChevronTexaco Company <br /> P O Box 6012, Room K2260 <br /> ISan Ramon, CA 94583 <br /> RE- Third Quarter Event of August 8,2005 <br /> Groundwater Monitoring& Sampling Report <br /> Chevron Service Station #9-2033 <br /> 508 West Charter Way <br /> Stockton, California <br /> Dear Mr Rouse <br /> fThis 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) A Joint monitoring event was conducted with BP, <br /> located at 620 West Charter Way, Former Texaco, located at 440 West Charter Way, and with Arco #2168, <br /> located on West Charter Way, Stockton, California Joint monitoring data is not included in the report <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 /> I analytical report are also attached <br /> Please call if you have any questions or comments regarding this report Thank you <br /> ISincerely, <br /> pR01'ESS/o <br /> I ' <br /> Deanna L Harding �Q`� OV Ke <br /> Protect Coordinator <br /> � <br /> No C 55734 <br /> * Exp j"A __0 <br /> Hagop Kevork cfj, <br /> PE No C55734 <br /> Figure 1 Potentiometric Map OF 0 AI_WF <br /> I Figure 2 Concentration Map <br /> Table 1 Groundwater Monitoring Data and Analytical Results <br /> Table 2 Field Measurements <br /> Table 3 Groundwater Analytical Results-Oxygenate Compounds <br /> Table 4 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 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 />