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Flag City Chevron - 2 - • 25 May 2004 6421 Capitol Ave., Lodi During my phone call, I also reminded AGE that the Monitoring and Reporting Program(MRP) for C&A 5-00-707 requires an Annual Report,which is overdue. AGE assured me that the Annual Report would be submitted shortly as an addendum to the Report. The MRP states: "An annual report shall be submitted to the Regional Board by 30 April of each year. This report shall contain an evaluation of the effectiveness and progress of the investigation and remedial actions. The annual report shall contain the following minimum information: (a) Groundwater contour maps and contaminant concentration maps containing all data obtained during the previous year; (b) Graphical summaries (time-series or trend graphs) of historical data obtained to date; (c) A discussion of the long-term trends in the concentrations of the pollutants in the groundwater monitoring wells; (d) An analysis of whether the contaminant plume is being captured by an extraction system or is continuing to spread; (e) A description of all remedial activities conducted during the year, an analysis of their effectiveness in removing the contaminants, and plans to improve remediation system effectiveness; (0 The anticipated date for completion of cleanup activities; (g) An identification of any data gaps and potential def ciencies/redundancies in the monitoring system or reporting program; (h) If desired, a proposal and rationale for any revisions to the groundwater sampling plan frequency and/or list of analytes. " In order to help evaluate remedial effectiveness and clarify why specific extraction wells should operate, I request that you include a table of the extraction wells (Table) in future Annual and Quarterly Reports, which provides: • The working status of each extraction well pump at that time (e.g., operable, inoperable), • An explanation how each extraction well is operated (e.g., continuous, alternating, not operated), and • An explanation why each extraction well is/is not incorporated into the treatment system (e.g., to maintain hydraulic control, remediate contamination, or is not needed with a rationale why, etc.). The Table should also be included with any future letter requests to change the treatment system operations. I will respond to the Report's recommendation to resume continuous groundwater extraction from extraction wells EW-7 and EW-10 after I have reviewed the Annual Report. I understand that