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I C. <br /> 6ETTLER - RYANN <br /> November 17, 2003 <br /> G-R.Job #386392 <br /> Mr Robert Cochran <br /> Chevron Products Company <br /> P 0 Box 6004 <br /> San Ramon, CA 94583 <br /> RE: Fourth Quarter Event of October 249 2003 <br /> Groundwater Monitoring& Sampling Report <br /> Chevron Service Station#9-1848 <br /> 1257 Yosemite Avenue <br /> Manteca, 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 /> _RIP _ QROFESSI <br /> Deanna L Harding �`�� OQ KEL �� <br /> Project Coordinator OCD <br /> Q� F2 <br /> UJ Na C 55734 rn <br /> Exp <br /> Hagop Kevork (P <br /> P E No C55734 �9�� CIVIk- ��\P <br /> Figure 1 Potentiometnc Map OF <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 /> • <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 />