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T - R YA N INC.E TLER <br /> January 14, 2002 <br /> G-R Job#386847 <br /> Mr Robert Cochran <br /> Chevron Products Company <br /> P O Box 6004 <br /> San Ramon, CA 94583 <br /> i <br /> RE: Fourth Quarter Event of December 6, 2001 <br /> Groundwater Monitoring & Sampling Report <br /> Chevron Service Station#9-2033 <br /> 508 West Charter Way <br /> Stockton, California <br /> I <br /> Dear Mr Cochran <br /> This report documents the most recentgroundwater 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 620 West Charter Way, Former Texaco located at 440 West Charter Way and Arco #2168 located <br /> on West Charter Way, Stockton, California The 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 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 /> QvotiESS 04 <br /> �o 0? KED <br /> Deanna L Harding <br /> Project CoordinatorCO <br /> LU No C 55734 <br /> * Exp <br /> Hagop Kevork (PX �Q <br /> P E No C55734q CIVl1. <br /> lF �F GP, <br /> Figure I Potentiometnc Map <br /> Figure 2 Concentration Map <br /> Table 1 Groundwater Monitoring Data and 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 9 Dublin , California 94568 ( 925 ) 551 - 7555 <br />