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6ETTLER - RYANINC. <br /> Siza <br /> March 29, 2002 <br /> G-R Job#180288 <br /> Mr Edward C Ralston <br /> Phillips 66 Company <br /> 1380 Lead Hili Road, Suite 120 <br /> Roseville, California 95661 <br /> RE- First Quarter Event of February 18,2002 <br /> Groundwater Monitoring &Sampling Report <br /> Tosco (Former BP) Service Station#11192 <br /> 1403 Country Club Boulevard <br /> Stockton, California <br /> Dear Mr Ralston <br /> This report documents the most recent groundwater monitoring and sampling event performed by Gettler-Ryan Inc <br /> (G-R)at the referenced site All fieldwork was conducted in accordance with G-R Standard Operating Procedure- <br /> Groundwater Sampling (attached) A joint groundwarter monitoring event was conducted with Shell, located at <br /> 1267 Country Club Boulevard, Stockton,California <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 the wells Static water level data and groundwater <br /> elevations are summarized in Table 1 A Potentiometric Map is included as Figure 1 <br /> Groundwater samples were collected from the monitoring wells as specified by G-R Standard Operating Procedure- <br /> Groundwater Sampling(attached) The field data sheets are also attached The samples were analyzed by Sequoia <br /> Analytical Analytical results are summarized in Tables 1 and 2 A Concentration Map is included as Figure 2 The <br /> chain of custody document and laboratory analytical reports are also attached <br /> Sincerely, <br /> t <br /> Deanna L Harding `y R G��� <br /> Project Coordinator �►,AS %/ <br /> No, 8882 <br /> Dougl J e � <br /> Senior eol gist, R G No 6882 <br /> �Ofi Chi-��r <br /> Figure 1 Potentiometnc Map <br /> Figure 2 Concentration Map <br /> Table 1 Groundwater Monitoring Data and Analytical Results <br /> Table 2 Groundwater Analytical Results-Oxygenate Compounds <br /> .0 Table 3 joint Groundwater Monitoring Data- Shell <br /> Attachments Standard Operating Procedure - Groundwater Sampling <br /> Field Data Sheets <br /> 11192-qml Chain of Custody Document and Laboratory Analytical Reports <br /> 6747 Sierra Court , Suite J Dublin , California 94568 { 925 ) 551 - 7555 <br />