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Attachment EPA Comments on the Draft DDRW-Tracy Minutes of the Project Manager Meeting of October 10 and 11, 1991 1. The DLA should use page numbers (i.e. , "1 of 2" and 112 of 2" etc. ) in future minutes for ease of reference and so that the completeness of the minutes package can be easily ascertained. 2 . In the second paragraph under the heading "Solid Waste Management Unit (SWMU) Investigation" the DLA states that EPA had/has data questions regarding SWMUs 10, 12 , 14, 15, 16 and 20. • It would be a more accurate summary of the meeting to say "EPA feels uncertain as to whether the locations of these SWMUs have been adequately defined. " 3 . Also, under the second paragraph under "SWMU Investigation" DLA states that SWMU No. 10 needs better definition. While this statement may have been made, it is also true that the Draft SWMU Engineering Report states that both SWMUs Nos. 10 and 12 need better definition. • Annotate the minutes with this fact. 4 . Same section, fourth paragraph: The statement "WCC stated it was decided that they would finish the original RI/FS before doing everything else and that this effort would include characterizing the groundwater plume and source areas . . . . " . However, EPA points out that OU No. 1 is a groundwater-only operable unit and that source area identification is not a part of the scope of OU No. 1. This fact was discussed during the meetings of 10/10 and 10/11. • EPA would like the fact that the scope of OU No. 1 is limited to only groundwater added to the minutes. 5. Same section, eighth paragraph: The text states that "EPA would not/could not . . . define an acceptable grid. " EPA's project manager stated at the meeting that he would not propose a sampling grid; that it was more appropriate that DLA propose a sampling grid and rationale based on their knowledge of the site and that EPA has technical experts to review such proposals. • Revise the text to more accurately reflect the entire discussion. 1