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GETTLER - RYAN INC. <br /> • <br /> May 30, 2003 <br /> Mr Robert Cochran G-R Job#386960 <br /> Chevron Products Company <br /> P O Box 6004 <br /> San Ramon, CA 94583 <br /> RE. Second Quarter Event of April 24,2003 <br /> Groundwater Monitoring & Sampling Report <br /> Chevron Service Station#9-2396 <br /> 25651 Highway 99 North <br /> Acampo, California <br /> Dear Mr Cochran <br /> This report documents the most recent groundwater monitoring and sampling event performed by Gettler-Ryan <br /> Inc (G-R) at the referenced site All field work was conducted in accordance with G-R Standard Operating <br /> 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 Iaboratory for <br /> analyses The field data sheets for this event are attached Analytical results are presented in the table(s) listed <br /> below A Concentration Map is included as Figure 2 The chain of custody document and laboratory analytical <br /> report are also attached <br /> Please call if you have any questions or comments regarding this report Thank you <br /> S ncerely, <br /> Deanna L Harding <br /> ProiecL Coordinator RED G 01 <br /> O 0 <br /> Robert C Mallory * No 7285 Up 2 �k <br /> !Opl 04 <br /> Registered Geologist No 7185 (P .. �Q- <br /> Figure I Potentiometnc Map 9�OFCAl.��04` <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 />