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N 1 C. <br /> owl <br /> 6ETTLER - RYA N' <br /> August 25, 1997 Job #5121 80 <br /> Mr Brett Hunter <br /> Chevron Products Company <br /> P O Box 6004 <br /> San Ramon, CA 94583 <br /> Re Quarterly 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 sampling event performed by Gettler-Ryan Inc (G-R) On July <br /> 20, 1997, field personnel were on-site to monitor and sample six wells (MW-2 through MW-7) at Chevron <br /> Service Station #9-6171 located at 6633 Pacific Avenue in Stockton, California <br /> Static groundwater levels were measured on July 20, 1997 All wells were checked for the presence of separate- <br /> phase hydrocarbons Separate-phase hydrocarbons were not present in any of the wells Static water level data <br /> and groundwater elevations are presented in Table I A Potentiometric Map is included as Figure I <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 1, 2, 3, and 4 The <br /> chain of custody document and laboratory 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 /> cerely, <br /> Deanna L Harding 9] J► <br /> Protect Coordinator y <br /> * No.5577 'k <br /> Stephen J Carter s <br /> Senior Geologist, RG No 5577 A9T�OF CAUFO��\� <br /> DLHRLS/dlh <br /> 5121 QML <br /> Figure I Potentlometric Map <br /> Table 1 Water Level Data and Groundwater Analytical Results <br /> Table 2 Field Measurements &Analytical Results <br /> Table 3 Analytical Results -Volatile Organic Compounds <br /> Table 4 Analytical Results - Bacteriological Elements <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 , California 94568 { 510 ) 551 - 7555 <br />