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I � <br /> GETTLER - RYAN INC. <br /> 091 September 9, 2002 <br /> Mr Robert Cochran G-R Job#386582 <br /> Chevron Products Company <br /> P O Box 6004 <br /> San Ramon,CA 94583 <br /> RE: Third Quarter Event of August 2,2002 <br /> Groundwater Monitoring&Sampling Report <br /> Chevron Service Station #9-1452 <br /> 334 East Main Street <br /> Ripon, California <br /> Dear Mr Cochran <br /> This report documents the most recent groundwater monitoring and sampling event 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 subrrutted 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 /> Si ely, <br /> r <br /> eanna L J G,5 <br /> Project Coordinator ��I\vGLAS <br /> t <br /> 1 <br /> No 6882 <br /> Dau s Lee <br /> Senior Geologist, R G No 6882 <br /> Figure 1 Potentiometric Map �TFOF CA�.�FG�� <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 9 Dublin , California 94568 ( 925} 551 - 7555 <br />