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GETTLER - RYAN INC. <br /> i <br /> August 5, 2004 <br /> G-R Job #386846 <br /> Ms Karen Stretch <br /> ChevronTexaco Company <br /> P O Box 6012, Room K2256 <br /> San Ramon, CA 94583 <br /> RE Third Quarter Event of July 15,2004 <br /> Groundwater Monitoring & Sampling Report <br /> Chevron Service Station 49-9840 <br /> 4344 Waterloo Road <br /> Stockton, California <br /> Dear Ms Stretch <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) <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 l 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 to 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 /> o ��r <br /> Deanna L Harding �� OP KLcy <br /> Project Coordinator <br /> 1 f , � No C 55734 m <br /> � Exp _Z0 <br /> Hagop Kevork �I clw_ <br /> P E No C55734 F OF CAO '3 <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 />