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GETTLER - RYAN <br /> 411 INC. <br /> June 19,2001 <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: Second Quarter Event of May 23,2001 <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 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 /> Sely, <br /> Deanna L Harding <br /> Project Coordinator Q`i' C��P E 1/� F< <br /> CO <br /> RYNoCDLU <br /> fC 5573 <br /> 10 <br /> Hagop Kevork * Exp <br /> P E No C55734 a <br /> Figure I Potentiometric Map F 0 0"Figure 2 Concentration Map <br /> OF 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 />