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C. <br /> GETTLER - RYANIN <br /> December 13, 2002 <br /> G-R Job#280045 <br /> Page l of 2 <br /> Mr Nick Nickerson <br /> Union Oil Company of California <br /> 8788 Elk Grove Boulevard <br /> Building 3, Suite 15 <br /> Elk Grove, California 95624 <br /> RE: Fourth Quarter Event of November 5 and 6,2002 <br /> Groundwater Monitoring & Sampling Report <br /> Former Unocal Service Station#0187 <br /> 437 East Miner Avenue <br /> Stockton, California <br /> Dear Mr Nickerson <br /> This report documents the most recent groundwater monitoring and sampling event performed by Gettler-Ryan Inc <br /> (G-R)at the referenced site All field work was conducted in accordance with G-R Standard Operating Procedure- <br /> Groundwater Sampling(attached) A joint monitoring event was conducted with Vintage Car Wash,located at 601 <br /> East Miner Avenue, Stockton, California <br /> Static groundwater levels were measured and all wells were checked for the presence of separate-phase <br /> •� hydrocarbons Separate-phase hydrocarbons were not present in the wells Static water level data and groundwater <br /> elevations are summarized in Table 1 Joint Groundwater Monitoring Data and Analytical Results are <br /> presented in Table 6 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 for <br /> analyses The field data sheets for this event are attached Analytical results are presented in the table(s) listed <br /> below Concentration Maps are included as Figures 4, 5 and 6 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 /> cerely, <br /> eanna L Harding ED GF <br /> Project Coordinator `���C YO <br /> •W(�0 <br /> �k No 7285 <br /> Robert C Mallory d+� l=ip of <br /> Registered Geologist No 7285 9pF CAL�Fp� <br /> i <br /> 6747 Sierra Court , Suite J Dublin , California 94568 ( 925 ) 551 - 7555 <br />