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i <br /> 6ETTLER - RYANINC.N <br /> February 6, 2004 <br /> GR Job#385121 <br /> Mr Robert Cochran <br /> Chevron Products Company <br /> P O Box 6004 <br /> San Ramon, CA 94583 <br /> RE: First Quarter Event of January 12 and 13, 2004 <br /> Groundwater Monitoring& Sampling Report <br /> Chevron Service Station#9-6171 <br /> 6633 Pacific Avenue <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) <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 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 /> bbaxn.� . AlOAd-)-l� <br /> �RpFESSIO� <br /> Deanna L Harding ,' q <br /> Project Coordinator <br /> �Q�' GnP K�LC�F <br /> LU No C 55734 <br /> 01W Hagop Kevork <br /> Exp Q�(' a' <br /> P E No C55734 CIVIL <br /> Figure 1 Potentiometne Map F OF CA N'V <br /> Figure 2 Concentration Map <br /> Table I Groundwater Monitoring Data and Analytical Results <br /> Table 2 Groundwater Analytical Results-Oxygenate Compounds <br /> Table 3 Groundwater 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, CA 94568 • (925) 551-7555 Fax (925) 551-7888 <br /> 3140 Gold Camp Drive Suite 170 • Rancho Cordova, CA 95670 • (916) 631 1300 • Fax (916) 631-1317 <br /> 1364 N McDowell Blvd Suite B2 • Petaluma, CA 94954 • (707) 789-3255 • Fax (707) 789-3218 <br />