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tl i1 i <br /> INC.43 GETTLER - RYAN IU <br /> October 13, 2000 <br /> G-R Job#386845 <br /> Mr Robert Cochran <br /> Chevron Products Company <br /> P O Box 6004 <br /> San Ramon, CA 94583 <br /> RE Third Quarter Event of September 13,2000 <br /> Groundwater Monitoring&Sampling Report <br /> Chevron Service Station#9-4275 <br /> 2905 West Benjamin Holt Drive <br /> Stockton, California <br /> Dear Mr Cochran <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 Arco <br /> Station #2133 located at 2908 West Benjamin Holt Drive, Stockton, California <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 The chain of custody document and laboratory analytical report are also attached <br /> Please call if you have any questions or comments regarding this report Thank you <br /> cerely, <br /> I fESSI <br /> p.� 4N <br /> Deanna L HardingO e P <br /> KE A�F <br /> Project Coordinator ti�Q�AGO O,p 2� <br /> cornT <br /> rr <br /> No C 55734 <br /> Hagop evork d Expo <br /> P E No C55734 ,►r <br /> Q <br /> Figure 1 Potentiometnc Map <br /> Figure 2 Concentration Map f OF CAL F <br /> Table I Groundwater Monitoring Data and Analytical Results <br /> Table 2 Groundwater Analytical Results <br /> Table 3 Dissolved Oxygen Concentrations <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 , California 94568 ( 925 ) 561 - 7555 <br />