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Del Monte Foods — Research Center <br /> c"M 205 North Wiget Lane(94598-2458) <br /> P.O. ox 9004 <br /> T4111 M11 <br /> Walnut Creek, CA 94598-0904 <br /> Telephone: (510) 944-7300 <br /> q ?, � ll I�' <br /> FAX: (510) 945-7453 (3-1 J'�.' <br /> July 18, 1997 <br /> Ronald Rowe Certified Mail <br /> Site Mitigation Unit Return Receipt Requested <br /> Public Health Services <br /> San Joaquin County <br /> 304 E. Weber Ave., Third Floor <br /> Stockton, CA 95201-0388 <br /> Subject: Quarterly Monitoring Report—Del Monte Disco Site <br /> Dear Mir. Rowe: <br /> Enclosed is the Quarterly Monitoring Report for the monitoring well sampling that occurred on <br /> Ak 17, 1997, and MTBE confirming samples collected on June 12, 1997. The next quarterly <br /> monitoring well sampling event is scheduled for August 12. <br /> In this report, you will find the following: <br /> - Groundwater has risen four feet since the last sampling on December 12, 1996. <br /> -MTBE found in four wells of the April 17 sampling with EPA Method 8020, was not <br /> confirmed by the June 12 sampling using EPA Method 8240. <br /> We have added this monitoring well data to the previous groundwater monitoring results to allow <br /> evaluation of all the data since monitoring well testing was initiated. <br /> If you have any questions, you can reach me at 510-944-7276. <br /> Sincerely, <br /> Richard Fish <br /> Environmental Manager, NW <br /> cc,. Nancy Bice —Geomatrix (2 QMRs) <br /> Janet Shestakov—Del Monte (1 QMR) <br /> Steve Balling -Del Monte (w/o QMR) <br />