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A' 1 <br /> 091 6ETTLER - RYAN NC. <br /> September 3, 2002 <br /> G-R Job#386463 <br /> Mr Robert Cochran <br /> Chevron Products Company <br /> P O Box 6004 <br /> San Ramon, CA 94583 <br /> RE: Third Quarter Event of July 25,2002 <br /> Groundwater Monitoring&Sampling Report <br /> Chevron Service Station #9-3232 <br /> 8660 Lower Sacramento Road <br /> Stockton,California <br /> Dear Mr Cochran <br /> This report documents the most recent groundwater monitoring and sampling events performed by Gettler-Ryan <br /> Inc (G-R) at the referenced site All field work was conducted in accordance with G-R Standard Operating <br /> 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 Ievel 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 for <br /> analyses The field data sheets for this event are attached Analytical results are presented in the table(s) listed <br /> below A Concentration Map is included as Figure 2 The chain of custody document and laboratory analytical <br /> report are also attached <br /> Please call if you have any questions or comments regarding this report Thank you <br /> S erely, <br /> r <br /> 1,14, W4 <br /> eanna L Harding <br /> rolect Coordinator S '/ <br /> AS d <br /> No 6882 <br /> Dou s Lee "' <br /> Senior Ge logist, R G No 6882 <br /> Figure 1 Potentiometric Map 9rFOF 0p41F <br /> Figure 2 Concentration Map <br /> Table I 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 /> 0 <br /> 6747 Sierra Court , Suite J • Dublin , California 94568 { 925 ) 551 -7555 <br />