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Program Field Work Plan dated April 2003. Because these documents, which proposed <br /> quarterly analysis of CU pesticides and TPG-G, have been approved by the Regulatory <br /> Agencies, it is recommended that the sampling frequencies and analytical suites remain <br /> unchanged through 2003, and that the recommended changes be proposed in the <br /> forthcoming 2003 Annual Monitoring Report (estimated submittal date December 2003) <br /> and the 2004 Well Monitoring Program Field Work Plan for implementation in calendar <br /> year 2004. <br /> 2. We do not concur with the reduction in the target analyte list for the new and pre-2002 <br /> extraction wells from the current 23 dissolved inorganic species by EPA Method <br /> SW6010B and/or SW6020 and mercury by SW7470A to four metals only (arsenic, total <br /> chromium, mercury and selenium). It is recommended that the metals target analyte list for <br /> the extraction wells be evaluated on a well-by-well basis in the 2003 Annual Monitoring <br /> Report. <br /> 3. We do not concur with the reduction in frequency of analysis for volatile organic <br /> compounds (VOCs) by EPA Method SW8260B and organochlorine pesticides (OC) by <br /> EPA Method SW8081A for groundwater samples from extraction wells installed prior to <br /> 2002 from quarterly to twice per year. It is recommended that the frequency of analysis for <br /> these extraction wells be evaluated on a well-by-well basis in the 2003 Annual Monitoring <br /> Report. <br /> 4. No effects on ROD requirements were noted because none of the monitoring wells <br /> specified in Table 9-2 of the ROD as being part of the performance monitoring network <br /> were discussed in the WDR Memorandum. <br /> 2 <br />