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MONITORING AND REPORTROROGRAM NO. 5-00- ` -4- <br /> PIONEER <br /> 4-PIONEER AMERICAS,INC. <br /> FORMER ALL-PURE FACILITY <br /> SAN JOAQUIN COUNTY <br /> Semiannual reports shall be submitted to the Board by the 30th day of the month following the <br /> end of first and third calendar quarters (i.e., by 30 April, and 30 October) until such time as <br /> the Executive Officer determines that the reports are no longer necessary. Each quarterly report <br /> is to include the following minimum information: <br /> (a) a description of the quarterly groundwater sampling event, including field logs. At a <br /> minimum, field logs shall contain water quality parameters measured before, during, and <br /> after purging, method of purging, depth of water, volume of water purged, etc.; <br /> (b) groundwater contour maps for the shallow and deep groundwater zones, if applicable; <br /> (c) isocontour contaminant concentration maps for all monitored groundwater zones, if <br /> applicable; <br /> (d) cumulative data tables containing the water quality analytical results and depth to <br /> groundwater; <br /> (e) a copy of the laboratory analytical data report; <br /> (f) if applicable, the status of any ongoing remediation, including cumulative information on <br /> the mass of contaminant removed from the subsurface, system operating time, the <br />