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i <br /> Inc. <br /> � 6ETTLER - RYAN <br /> February 23, 2004 <br /> G-R.Job #386463 <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 23,2004 <br /> Groundwater Monitoring& Sampling Report <br /> Chevron Service Station#9-3232 <br /> 8660 Lower Sacramento Road <br /> Stockton, California <br /> Dear Mr Cochran <br /> This report documents the most recent groundwater monitoring and sampling events 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 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 /> I <br /> Sincerely, <br /> — ESSlpl <br /> Deanna L Harding kv OP KEL 4,1 <br /> Project Coordinator rPC? 0 1COD � <br /> r <br /> CD No C 55734 m <br /> M Exp <br /> Hagop Kevork 40 <br /> P E No C55734 ��9 C1VI%_ <br /> Figure 1 Potentiometnc Map TF dF C A0. '3 � <br /> Figure 2 Concentration Map <br /> Table 1 Groundwater Monitoring Data and Analytical Results <br /> . Table 2 Groundwater Analytical Results-Oxygenate Compounds <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 i32 • Petaluma, CA 94954 • (707) 789-3255 • Fax (707) 789-3218 <br />