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6ETTLER - RYAN <br /> 4Zi INC. <br /> August 30,2001 <br /> G-R Job#386855 <br /> Mr Robert Cochran <br /> Chevron Products Company <br /> P O Box 6004 <br /> San Ramon, CA 94583 <br /> RE: Third Quarter Event of July 31, 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 point groundwater monitoring event was <br /> conducted with Tosco (Former BP Oji) Service Station #11194 located at 2375 Tracy Boulevard and Unocal <br /> (Former Scotty's) Service Station located at 574 West Grant Line Road, Tracy,California <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 Joint groundwater monitoring data is presented in Tables 3 and 4 <br /> 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 /> cerely, <br /> V,pF1=SS/o q <br /> .0 K�V F <br /> Deanna L Harding <br /> Protect Coordinator � <br /> No j 55734 M <br /> * Exp 13,to <br /> Hagop KevorksT9r CN11- Q��Q <br /> P E No C55734 <br /> F OF C AL�FO <br /> Figure 1 Potentiometric Map <br /> Figure 2 Concentration Map <br /> 'fable 1 Groundwater Monitoring Data and Analytical Results <br /> Table 2 Groundwater Analytical Results <br /> • Table 3 Joint Groundwater Monitoring Data-BP Oil <br /> Table 4 Joint Groundwater Monitoring Data-Unocal <br /> Attachinents Standard Operating Procedure-Groundwater Sampling <br /> Feld Data Sheets <br /> Chain of Custody Document and Laboratory Analytical Reports <br /> 6747 Sierra Court , Suite J • Dublin , California 94568 ( 925) 551 -7555 <br />