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GETTLER - RYAN IVC. <br /> eig <br /> December 28, 2001 <br /> G-R Job#180198 <br /> Mr Edward C Ralston <br /> Phillips 66 Company <br /> 1380 Lead Hill Road, Suite 120 <br /> Roseville, California 95661 <br /> RE Fourth Quarter Event of November 20, 2001 <br /> Groundwater Monitoring& Sampling Report <br /> Tosco(Circle K)Unit#08671 <br /> 8606 Thornton Road <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 field work was conducted in accordance with G-R Standard Operating Procedure <br /> -Groundwater Sampling(attached) Joint groundwater monitoring has been discontinued with North Stockton Auto <br /> Center, located at 8709 North Davis Road, Stockton, California <br /> Static groundwater levels were measured and all wells were checked for the presence of separate-phase hydrocarbons <br /> Separate-phase hydrocarbons were not present in the wells Static water level data and groundwater elevations are <br /> . summarized in Table 1 Joint groundwater monitoring and analytical data are presented in Table 3 A Potentiometric <br /> 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 /> Deanna L Harding Rl~� G <br /> Project Cooidniatoi �%S G� , <br /> � <br /> �s <br /> .L No 6882 <br /> Doug s Lee <br /> Senior Geologist, R G No 6882 -V, <br /> Figure 1 Potentiometnc Map OF CA <br /> Figure 2 Concentration Map <br /> Table i Groundwater Monitoring Data and Analytical Results <br /> Table 2 Groundwater Analytical Results-Oxygenate Compounds <br /> Table 3 Joint 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 /> 08671 qml <br /> 6747 Sierra Court , Suite J Dublin , California 94568 ( 925 ) 551 - 7555 <br />