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GETTLER - RYAN <br /> INC. <br /> June 18, 2002 <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: Second Quarter Event of May 6, 2002 <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) <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 l Joint groundwater monitoring and analytical data are presented to Table 3 A Potentiometric <br /> • Map is included as Figure 1 <br /> Groundwater samples were collected from the monitonng wells and submitted to a state certified laboratory for <br /> analyses The field data sheets for this event are attached Analytical results are presented in the table(s)listed below <br /> A Concentration Map is included as Figure 2 The chain of custody document and laboratory analytical report are also <br /> attached <br /> Sincerely, <br /> Deanna L Harding Q�p�ESSIpN <br /> Protect Coordinator <br /> �7_ <br /> � S z <br /> d No Ctt 55734 M <br /> Hagop OorkY Exp l� <br /> PE No C55734 ♦r <br /> CN <br /> Figure 1 Potentiometric Map F O11-,�oQ�'�� <br /> Figure 2 Concentration Map F C AL <br /> Table l 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 /> (09671 ym) <br /> 6747 Sierra Court , Suite J Dublin , California 94568 ( 925 ) 551 - 7555 <br />