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rt <br /> 4Zi 6ETTLER - RYAN INC. <br /> June 22, 2001 <br /> Mr Robert Cochran G-R Job#386855 <br /> Chevron Products Company <br /> P O Box 6004 <br /> San Ramon, CA 94583 <br /> RE Second Quarter Event of May 25,2001 <br /> Groundwater Monitoring &Sampling Report <br /> Former Chevron Service Station #9-8632 <br /> 575 Grant Line Road <br /> Tracy, 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) A joint groundwater monitoring and sampling <br /> event was scheduled but not conducted on the same date with BP Oil Service Station #11194 located at 2375 <br /> Tracy Boulevard, and Unocal Service Station located at 574 West Grant Line Road, Tracy, California Joint <br /> groundwater monitoring data is not included in this report <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 I Dissolved Oxygen Concentrations are presented in Table 3 A <br /> 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 /> Uincerely, <br /> Q�oF[=SS�asr, <br /> �0P Kk L ``2 <br /> Deanna L Harding C/:� <br /> Project Coordinator <br /> ' 55734 M <br /> * Exp 20 <br /> Hagop Ke rk <br /> PE No C55734 OF CA\-l�u <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 <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 />