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MONITORING AND REPORTAROGRAM NO. R5-2007-XXXX -6 - <br /> PIONEER AMERICAS LLC <br /> TRACY, SAN JOAQUIN COUNTY <br /> (1) A discussion of the long-term trends in the concentrations of the pollutants in the <br /> groundwater monitoring wells and an analysis of whether the pollutant plumes are <br /> shrinking, stable, or are spreading; <br /> (m)Status of any wellhead treatment system(s), including operating times, effectiveness, and <br /> any field notes pertaining to the operation and maintenance of the system(s); <br /> (n) The reasons for, and duration of all interruptions in the operation of any wellhead <br /> treatment system(s), and actions planned or taken to correct and prevent future <br /> interruptions. <br /> (o) The anticipated date for completion of cleanup activities; <br /> (p) An identification of any data gaps and potential deficiencies/redundancies in the <br /> monitoring system or reporting program; and <br /> (q) If desired, a proposal and rationale for any revisions to the groundwater sampling plan <br /> frequency and/or list of analytes. <br /> The results of any monitoring done more frequently than required at the locations specified in <br /> the MRP also shall be reported to the Regional Water Board. The Discharger shall <br /> implement the above monitoring program as of the date of the Order. <br /> Ordered by: <br /> PAMELA C. CREEDON, Executive Officer <br /> (Date) <br />