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ti <br /> 4ZI 6ETTLER - RYAN INC. <br /> June 16, 2005 <br /> G-R Job 9386847 <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 May 9,2005 <br /> Groundwater Monitoring& Sampling Report <br /> Chevron Service Station #9-2033 <br /> 508 West Charter Way <br /> Stockton, California <br /> Dear Mr Rouse <br /> 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) 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 I <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 /> � 55 At GAO <br /> Deanna L Harding <br /> Project Coordinator Q� j9�0 <br /> CL 0 <br /> M co <br /> No.75x4 z <br /> PI&A 9), <br /> Robert A Lauritzen tc pQ' <br /> Senior Geologist, P G No 7504 �F CAO. <br /> Figure I Potentiometric Map <br /> Figure 2 Concentration Map <br /> Table 1 Groundwater Monitoring Data and Analytical Results <br /> Table 2 Field Measurements <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 62 Petaluma CA 94954 • (707) 789-3255 • Fax (707) 789-3218 <br />