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n , <br /> i <br /> "d iy <br /> 6ETTLER - RYAN NC. <br /> February 20, 2002 <br /> Mr Robert Cochran G-R Job#386854 <br /> Chevron Products Company <br /> P O Box 6004 <br /> San Ramon, CA 94583 <br /> RE- First Quarter Event of January 23, 2002 <br /> Groundwater Monitoring & Sampling Report <br /> Chevron Service Station #9-8264 <br /> 3775 Tracy Boulevard <br /> Tracy, 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) A Joint groundwater monitoring event was conducted with Shell <br /> Service Station located at 3725 South Tracy Boulevard, Tracy, California <br /> Static groundwater Ievels 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 laboratory 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 /> Sin ly, ` <br /> Deanna L Harding Q�Of ESSI; <br /> Protect Coordinator �Op Ke <br /> LU No C 55734 m <br /> Hagop Kevork `x' Exp <br /> P E No C55734 �r <br /> Figure l Potentiometric Map 9T CIVI\- <br /> Figure 2 Concentration Map F OF 0 p;11F0 <br /> Table l Groundwater Monitoring Data and Analytical Results <br /> Table 2 Groundwater Analytical Results <br /> Table 3 Groundwater Analytical Results <br /> Table 4 Joint Groundwater Monitoring Data - Shell <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 />