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u <br /> 6ETTLER - RYANINC. <br /> • January 31, 2001 <br /> G-R Job#386847 <br /> Mr Robert Cochran <br /> Chevron Products Company <br /> P O Box 6004 <br /> San Ramon,CA 94583 <br /> RE: Fourth Quarter Event of November 21 and December 2, 2000 <br /> Groundwater Monitoring& Sampling Report <br /> Chevron Service Station#9-2033 <br /> 508 West Charter Way <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) A point monitoring event was conducted with Shell <br /> located at 620 West Charter Way, former Texaco located at 440 West Charter Way, and Arco located on <br /> Charter Way, Stockton,California The joint monitoring data is not included in the 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 1 A Potentiometric Map is mc,luded as Figure l <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 /> Sincerely, <br /> Deanna L Harding <br /> r ect Coordinator <br /> N 0 3 C 2al <br /> Doug s J Lee s; _ <br /> Senior Ge logist, R G No 6882 y <br /> Figure I Potentiometric Map <br /> O� C 1�L r <br /> Figure 2 Concentration Map <br /> Table 1 Groundwater Monitoring Data and 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 />