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6ETTLER - RYAN INC. <br /> • September 19, 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: Third Quarter Event of August 7,2002 <br /> Groundwater Monitoring & Sampling Report <br /> Tosco(Circle K)Unit#08671 <br /> 8606 Thornton Road <br /> Stockton, California <br /> bear 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 1 Joint groundwater monitoring and analytical data are presented in Table 3 A Potentiometnc <br /> Map is included as Figure 1 <br /> Groundwater samples were collected from the monitoring 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 /> bL'4r� J <br /> ---- <br /> Deanna L Harding e,01 ES 61"1f1 <br /> Project Coordinator �q O? K <br /> CO "XI <br /> LU No C 5573 �L n <br /> Hagop Kevork * Exp l�T <br /> P E No C55734 s <br /> CIV41- <br /> Figure 1 Potentiometnc Map TF OF 0 At1� <br /> Figure 2 Concentration Map <br /> Table 1 Groundwater Monitoring Data and Analytical Results <br /> Table 2 Groundwater Analytical Results-Oxygenate Compounds <br /> iTable 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 />