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GETTLER - RYAN N C. <br /> September 21, 1998 Job #512I 80 <br /> Mr Brett Hunter <br /> Chevron Products &mpany <br /> P O Box 6004 <br /> San Ramon, CA 94583 <br /> Re Third Quarter 1998 Groundwater Monitoring Sampling Report <br /> Chevron Service Station #9-6171 <br /> 6633 Pacific Avenue <br /> Stockton, California <br /> Dear Mr Hunter <br /> This report documents the quarterly groundwater monitoring and sampling event performed by Gettler-Ryan <br /> Inc (G-R) On August 17 and 18, 1998, field personnel were on-site to monitor and sample six wells (MW-2 <br /> through MW-7) at the above mentioned site <br /> Static groundwater levels were measured and all wells were checked for the presence of separate-phase <br /> hydrocarbons Separate-phase hydrocarbons were not present in any of the wells Static water level data and <br /> groundwater elevations are presented in Table 1 A Potentlometric Map is included as Figure 1 <br /> Groundwater samples were collected from the monitoring wells as specified by G-R Standard Operating <br /> Procedure - Groundwater Sampling (attached) The field data sheets for this event are also attached The <br /> samples were analyzed by Sequoia Analytical Analytical results are presented in Tables I through 4 The chain <br /> of custody document and Iaboratory analytical reports are enclosed <br /> Thank you for allowing Gettler-Ryan Inc. to provide environmental services to Chevron Please call if you have <br /> any questions or comments regarding this report <br /> Si e ly, <br /> De ar ng i ED 1 0 <br /> Protect Coordinator y �C?�� F� SIF��O� <br /> Barbara Slerrunski NO 6676 <br /> Protect Geologist, RG No 6676 :A <br /> oGH/S1Cfdlh <br /> 5121 QML 'FoF cAL�F°� <br /> 6747 Sierra Court , Suite J - Dublin , California 94568 ( 925 } 551 - 7555 <br />