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Mr. Timothy VanDomelen - 4 - 9 May 2008 <br /> J.R. Simplot, Lathrop <br /> Comment Source Resolution <br /> Number <br /> report of the size of the release, what was excavated, when and <br /> how excavation was done, how much material was removed, the <br /> fate of excavated wastes, and how confirmation of removal to <br /> the full extent is achieved. <br /> 22 Addendum The area east of Howland Road was backfilled with gravel out of <br /> p. 4 and concern for hazards caused by a large open hole near the <br /> Figure 3 roadway. Samples from the base of the excavation proposed <br /> will include analysis by D. I. WET for boring EB-AN. <br /> 23 Addendum See comment #4 above regarding site background. <br /> p. 2 and <br /> Annual <br /> Meeting <br /> 24 Addendum Geomatrix believes that the ammonium sulfate release is <br /> pp. 4-5 and shallow and that eight soil borings and a downgradient <br /> Annual groundwater grab sample are sufficient for its characterization. <br /> Meeting The soil borings will be used for depth-discrete groundwater <br /> sampling. Results will be summarized in the Progress Report <br /> due 21 October 2008 (may include proposal for additional wells <br /> if warranted by findings). <br /> 25 Addendum Discussion centered on what could be done this year to clean up <br /> p. 4 and groundwater. A site conceptual model is needed to formulate a <br /> Annual comprehensive approach to site cleanup. A conceptual site <br /> Meeting model will be summarized in the Progress Report due <br /> 21 July 2008. <br /> Incorporating monitoring wells LP-8 and LP-9 into regular <br /> monitoring would give helpful information on the groundwater. <br /> Sampling LP-9 as part of the upcoming field investigation is not <br /> mentioned in the Addendum. Tim Van Domelen confirmed that <br /> the well would be sampled by telephone on 5 May 2008. <br /> Regional Water Board staff recommended driving all future site <br /> investigation work toward overall remedial action for the facility— <br /> most probably beginning with an aquifer pumping test. Please <br /> provide a proposal for an aquifer testing program in the progress <br /> report due 21 October 2008. <br /> 26 Annual J.R. Simplot will be providing reports to Glenn Springs Holdings <br /> Meeting (Nam Baek) and their consultant, Conestoga-Rovers & <br /> Associates. <br /> In summary, the following outstanding items should be addressed in a letter by 27 May 2008: <br /> • Selection of an alternate location for background groundwater and background soil <br /> sampling. <br /> • Addition of ammonium, general minerals, and TDS to the groundwater analytical program. <br /> As stated in the Addendum, J.R. Simplot has committed to the following items and due dates: <br />