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6ETTLER - RYAN INC. <br /> ' February 5, 2009 <br /> G-R Job#385833 <br /> Ms. Stephanie Furgal Page 1 of 2 <br /> Chevron Environmental Management Company <br /> 6111 Bollinger Canyon Road, Room 3652 <br /> ' San Ramon, CA 94583 <br /> RE: First Quarter Event of January 7,2009 <br /> Special Event of January 17,2009 <br /> Groundwater Monitoring& Sampling Report <br /> Chevron Facility#306620 <br /> ' (Former Unocal#5098) <br /> 5606 Pacific Avenue <br /> Stockton, California <br /> Dear Ms. Furgal: <br /> This report documents the most recent groundwater monitoring and sampling events 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). <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. Potentiometric Maps are included as Figures 1, 2 and 3. <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. The chain of custody document and the laboratory analytical reports are also attached. All <br /> ' groundwater and decontamination water generated during sampling activities was removed from the site, per <br /> the Standard Operating Procedure. <br /> Please call if you have any questions or comments regarding this report. Thank you. <br /> Sincerely, <br /> C� C _ <br /> ' Deanna L. Harding AL GF <br /> Project Coordinator �44 ✓��0 <br /> Q4 N <br /> X82 <br /> Doug s J. L e -9 <br /> Senior eolo ist, P.G. No. 6882 �C <br /> g <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 />