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rs <br /> 6ETTLER - RYAN 111 C. <br /> • <br /> June 20, 2003 <br /> G-R lob#386847 <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 29, 2003 <br /> Groundwater Monitoring & Sampling Report <br /> Chevron Service Station 49-2033 <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 condULted with BP, <br /> located at 620 West Charter Way, Former Texaco, located at 440 West Charter Way, and with Arco #2168, <br /> located on West Charter Way, Stockton, California 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 I 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 /> Sincerely, f <br /> -fat <br /> Deanna L Harding <br /> Probe t CoordinatorNo 7 <br /> Robert C Mallory Exp <br /> Registered Geologist No 7285 cfj, <br /> Figure 1 Potentiometnc Map 9�QFCA�� <br /> Figure 2 Concentration Map <br /> Table l 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 9 Dublin , California 94568 ( 925 ) 551 - 7555 <br />