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GETTLER - RYAN INC. <br /> June 2, 1995 <br /> Kenneth Kan <br /> Chevron USA Products Company <br /> P O Box 5004 <br /> San Ramon, CA 94583 <br /> Re Former Chevron Service Station ##9-0959 <br /> 103 W 11th Street <br /> Tracy, California <br /> Job ##5297 85 <br /> Dear Mr Kan <br /> This report documents the special groundwater sampling event performed by Gettler-Ryan(G-R)personnel <br /> On April 26, 1995, field personnel were on-site to gauge and sample two newly installed off-site monitoring wells <br /> (MW4 and MW-5)at Former Chevron Service Station#9-0959 located at 103 W 1 lth Street in Tracy, Califorma <br /> Static groundwater levels were collected on April 26, 1995 The wells were checked for the presence of <br /> separate-phase hydrocarbons Separate-phase hydrocarbons were not present in the wells checked Groundwater <br /> elevation Ievels are presented m Table 1 At the request of Chevron and with the approval of San Joaquin <br /> Environmental Health Department, no potentiometnc map was prepared A potentiometric map for the above- <br /> referenced location will be generated in accordance with the regularly scheduled third quarter morutorrng event <br /> The groundwater samples were collected as specified in the G-R Standard Operating Procedure -QuarterIy <br /> Groundwater Sampling(attached) The field data sheets for this event are also attached The groundwater samples <br /> were analyzed by Superior Precision Analytical, Inc Analytic results are presented in Table i The chain of <br /> custody document and laboratory analytic reports are attached G-R is not responsible for laboratory omissions or <br /> errors <br /> Thank you for allowing us to provide environmental services to Chevron USA Please call if you have <br /> any questions or comments <br /> Respectfully submitted, <br /> ArgyKon <br /> `5•��[�l�D G 0, <br /> Envrr nmceonn Project M er Q� EN J Cq,9�G�A <br /> Stephen Carter <br /> Senior Geologist, R G 5577 NO. 5577 <br /> AML/SJC/rJb Nil <br /> 5297 QML •� t1 <br /> AI. <br /> Table i Water Level Data and Groundwater Analytic Results �OP C %F�P <br /> Attachments Standard Operating Procedure - Groundwater Sampling <br /> Field Data Sheets <br /> Chain of Custody Document and Laboratory Analytic Reports <br /> 6747 Sierra Court , Suite J Dublin , California 94568 ( 5 10 ) 551 - 7555 <br />