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GETTLER - RYAN INC. <br /> August 30, 2000 <br /> G-R Job#385121 <br /> Mr Robert Cochran <br /> Chevron Products Company <br /> P O Box 6004 <br /> San Ramon, CA 94583 <br /> RE: Second Quarter Event of May 22,2000 <br /> Groundwater Monitoring & Sampling Report <br /> Chevron Service Station #9-6171 <br /> 6633 Pacific Avenue <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 A Concentration Map is included as Figure 2 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 /> Scerely, <br /> ' RED GE <br /> p�O <br /> Deanna L arding <br /> Meet.Coordinator <br /> FOR No. 8882 <br /> Step\ A.�' <br /> Carter <br /> Senior Geologist,R G No 5577 LP <br /> Figure 1 Potentiometric Map SOF CAUF��\ <br /> Figure 2 Concentration Map <br /> Table 1 Groundwater Monitoring Data and Analytical Results <br /> Table 2 Groundwater Analytical Results <br /> Table 3 Groundwater Analytical Results <br /> Attachments Standard Operating Procedure-Groundwater Sampling <br /> Field Data Sheets <br /> Chain of Custody Document and Laboratory Analytical Reports <br /> r <br /> 6747 Sierra Court , Suite J Dublin , California 94568 ( 925 ) 551 -7555 <br />