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Mr. Timothy VanDomelen - 2 - 9 May 2008 r <br /> J.R. Simplot, Lathrop <br /> Comment Source Resolution <br /> Number <br /> p. 4 and EB-BA, and EB-BB analyzed by Waste Extraction Test using <br /> Annual deionized water (D.I. WET) on a sample from each boring and <br /> Meeting reported in the Progress Report due 21 October 2008. <br /> Site groundwater background is proposed to be collected from <br /> monitoring well LP-7. Regional Board staff request an alternate <br /> location for background groundwater sampling further removed <br /> from plant activities. Please provide this information in a <br /> letter by 27 May 2008. <br /> 5 Addendum J.R. Simplot provided some as-built drawings of pond discharge <br /> p. 2 and piping in the appendix and will prepare updated versions of <br /> Appendix A requested drawings due 31 December 2008. <br /> 6. Addendum The location of the sump area relative to the ponds was pointed <br /> p. 2 and site out during the site tour. Sample EB-AG was collected near the <br /> tour sump area at the center of highest observed concentrations and <br /> this suffices as a sample location for the sump. As-built <br /> drawings of the sump area will be provided by <br /> 31 December 2008. <br /> 7 Annual See comment #4 above. We agreed that all soil and <br /> meeting groundwater samples will be analyzed for all constituents of <br /> concern and that locations and lithologic profiles of all soil <br /> borings will be included in J.R. Simplot's report on the <br /> investigation. <br /> Ammonium, general minerals, and TDS were requested to be <br /> added to the groundwater analytical program for the <br /> investigation. This addition is not mentioned in the Addendum; <br /> please confirm these additional analyses in a letter by <br /> 27 Ma 2008. <br /> 8 Annual We agreed that EB-AT would be moved from the east side to the <br /> meeting west side of Howland Road. Regional Board staff requested <br /> converting this boring to a monitoring well, but no wells were <br /> mentioned in the Addendum. Tim Van Domelen confirmed by <br /> telephone on 5 May 2008 that EB-AT would be moved as <br /> discussed, but well installation would not take place in this phase <br /> of work. <br /> 9 Addendum J.R. Simplot provided an update on the evaluation of <br /> p. 2 and p. containment for above-ground piping and for plans to evaluate <br /> 3 pipe integrity. J.R. Simplot plans to submit a test procedure for <br /> underground piping and work plan for pipe integrity testing by <br /> 31 July 2008. A report summarizing pond liner integrity <br /> monitoring and maintenance activities will be submitted by <br /> 31 Jul 2008. <br /> 10 Addendum See comment #9 above. <br /> p. 2 <br /> 11 Addendum We agreed that the locations and construction details for the <br />