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6ETTLER - RYAN INC. <br /> November 22, 2002 <br /> Mr Robert Cochran <br /> G-R.Job#386463 <br /> Chevron Products Company <br /> P O Box 6004 <br /> San Ramon,CA 94583 <br /> RE, Fourth Quarter Event of October 24,2002 <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 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 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 ncerely, <br /> Deanna L Harding <br /> Project Coordinator <br /> �' <br /> O 0 <br /> * X No 7285 �t <br /> Aobert Mallory Exp of o <br /> Registered Geologist No 7285 `Py , Q <br /> CA4,�OQ` <br /> Figure I 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 , California 94568 ( 925 } 551 -7555 <br />