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Ir <br /> Ir <br /> • 6ETTLER - RYAN INC. <br /> March 17,2006 <br /> G-R Job#386847 <br /> Mr Dann Rouse <br /> Chevron Environmental Management Company <br /> P O Box 6012,Room K2260 <br /> San Ramon, CA 94583 <br /> RE: First Quarter Event of February 6,2006 <br /> Groundwater Monitoring& Sampling Report <br /> Chevron Service Station#9-2033 <br /> i 508 West Charter Way <br /> Stockton, California <br /> Dear Mr Rouse <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) A joint monitoring event was conducted with BP, <br /> located at 520 West Charter Way, Former Texaco, located at 440 West Charter Way, and with Arco #2168, <br /> located on West Charter Way, Stockton, California Joint monitoring data is not included in the report <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 Potentiometnc 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 /> i <br /> r <br /> Deanna L Harding ���ONA GFO <br /> Project Coordinator !�, A [� <br /> 2Unt�ze�n <br /> OL <br /> • 2 No 7504Robert A L <br /> Senior Geologist, P G No 7504 <br /> OF CAI.�� <br /> Figure 1 Potentiometnc Map <br />' Figure 2 Concentration Map <br /> Table I Groundwater Monitoring Data and Analytical Results <br /> Table 2 Field Measurements <br /> Table 3 Groundwater Analytical Results-Oxygenate Compounds <br /> Table 4 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) S51-7555 - 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 82 - Petaluma GA 94954 - (707) 789 3255 - Fax (707) 789 3218 <br /> r <br />