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y <br /> 4i9i 6ETTLER - RYAN INC. <br /> January 31, 2001 <br /> G-R Job#386846 <br /> Mr Robert Cochran <br /> Chevron Products Company <br /> P O Box 6004 <br /> San Ramon, CA 94583 <br /> RE' Fourth Quarter Event of December 14, 2000 <br /> Groundwater Monitoring & Sampling Report <br /> Chevron Service Station#9-9840 <br /> 4344 Waterloo Road <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) <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 /> Sincerely, <br /> lei <br /> Qenk and n <br /> ect Coordinator <br /> Doug s Lee <br /> Senior a logist, R G No 6882 : <br /> Figure I Potentiometric Map OF CA��`�O�` <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 /> • <br /> 6747 Sierra Court , Suite J Dublin , California 94568 ( 925 ) 551 - 7555 <br />