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MONITORING AND REPORTINPROGRAM NO. 5-00-846 -3 - <br /> PIONEER <br /> 3 - <br /> PIONEER AMERICAS, INC.-TRACY PLANT <br /> FORMER ALL-PURE CHEMICAL COMPANY <br /> SAN JOAQUIN COUNTY <br /> the remediation system, and any field notes pertaining to the operation and maintenance of the <br /> system; and <br /> (g) if applicable, the reasons for and duration of all interruptions in the operation of any <br /> remediation system, and actions planned or taken to correct and prevent interruptions. <br /> An annual report shall be submitted to the Board by 30 April of each year. This report shall contain <br /> an evaluation of the effectiveness and progress of the investigation and remediation, and may be <br /> submitted with the first semiannual monitoring report. The annual report shall contain the <br /> following minimum information: <br /> (a) both tabular and graphical summaries of all data obtained during the previous year; <br /> (b) groundwater contour maps and contaminant concentration maps containing all data obtained <br /> during the previous year; <br /> (c) a discussion of the long-term trends in the concentrations of the pollutants in the groundwater <br /> monitoring wells; <br /> (d) if applicable, an analysis of whether the contaminant plume is being captured by the extraction <br /> system or is continuing to spread; <br /> (f) a description of all remedial activities conducted during the year, an analysis of their <br /> effectiveness in removing the contaminants, and plans to improve remediation system <br /> effectiveness; <br /> (g) the anticipated date for completion of cleanup or remediation activities; <br /> (h) an identification of any data gaps and potential deficiencies/redundancies in the monitoring <br /> system or reporting program; <br /> (i) if desired, a proposal and rationale for any revisions to the groundwater sampling plan frequency <br /> and/or list of analytes. <br /> The results of any monitoring done more frequently than required at the locations specified in the <br /> MRP also shall be reported to the Board. The Discharger shall implement the above monitoring <br /> program as of the date of the Order. <br /> Ordered by: <br /> Y C TON, Executive Officer <br /> /7 <br /> (Date) <br />