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a <br /> (DDRW-WB) would like more letter reports to be followed by <br /> conference calls . In this manner , everyone would have hard <br /> data to look at and comment on during the conference calls . <br /> ' A question arose which was: What does WCC/CoE need to do to <br /> write off a SWMU to everyone ' s satisfaction? RWQCB says use <br /> appropriate testing for the contaminant in question , take <br /> three samples 'from a vertical boring and use appropriate <br /> grid . EPA would not/could not , at this meeting , define a <br /> acceptable grid . EPA feels that the contractor should <br /> _ propose griding for their review and comment . WCC to <br /> propose grid spacing and have adequate rationalization for <br /> it . <br /> The EPA agreed that it is all right to review field work <br /> during an investigation prior to doing more work . <br /> If DDRW-WB wants to proceed. with removal of 'lined ponds , an <br /> action memorandum' is required to get the ball rolling . <br /> Later in the meeting it was decided DDRW-WB did not want to <br /> close lined ponds yet because we are using them for disposal <br /> of purge water from monitoring wells . <br /> s Finally , it was decided that when the SWMUs <br /> ' investigation/report is finalized , the comments will be <br /> incorporated into the Site Wide RI/FS . <br /> 9 <br /> Operable Unit 1 <br /> WCC will collect additional data through well monitoring <br /> program. WCC to add different parameters for pesticides . <br /> CoE exercised options to look at off site wells , both <br /> domestic and agricultural . <br /> WCC to make sure there is data for the risk assessment and <br /> to look at groundwater risk . <br /> Contaminant level RWQCB would like to see is non-detect or <br /> background , the cleanup is .not just for drinking water . <br /> Quarterly monitoring report due 12 November 1991 . Data from <br /> this report will be what is used for the risk assessment . <br /> When critical issues arise there should be a conference call <br /> or meeting to make a decision . <br /> Conference call on 10 December 1991 , to agree on chemicals <br /> of concern. <br /> WCC will determine what type model it will use , analytical <br /> or capture zone , for OU- 1 and seek everyone ' s approval . <br /> 2 <br />