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INTEROFFICE MEMORANDUM <br />TO: <br />JIM STARK, LEIGH SIMMONS <br />FROM: <br />ROB ZUBER <br />SUBJECT: <br />TR -76 ADEQUACY FOR C-1981-022 <br />DATE: <br />9/15/2015 <br />I looked at most of the TR -76 submittal (I did not look at the exhibit related to boreholes, leaving that for <br />Leigh's expertise). As appropriate, I compared the submittal to maps and exhibits in the PAP for Elk <br />Creek Mine (C-1981-22). I identified the following adequacy items: <br />1. In Exhibit 2.05-E5 it appears that several pages are called page 6. This could be there to identify <br />Item 6, but it is not clear. <br />2. In Table 2.05 -E5 -T2, the total values do not include the values for West Valley and II West <br />Refuse Piles. These should be added to the total values or annotation added to clarify why they <br />are not in the totals. <br />3. On several of the drawings (e.g., Drawing 2.05-M6 Sheet 1) there appear to be new (proposed) <br />culverts. However, the submittal does not include new calculations for the sizing of these <br />culverts. Please provide this analysis. <br />4. The label for the riprap channel in Elk Creek has changed: the word "geotextile" has been <br />removed. Please explain why this change to the drawing was made. If this reflects an on -the - <br />ground change, please explain the basis of this change. <br />