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December 3, 2012 <br />To: Jared Ebert <br />From: Susan Burgmaier <br />Re: Seneca II -W Mine (Permit No. C- 1982 -057) <br />Technical Revision No. 79 <br />Adequacy Review <br />Per your request, I have completed my review of Seneca Coal Company's submittal for <br />Technical Revision No. 79 for the Seneca II -W Mine permit. The design information <br />provided for new Culvert PM -18 is acceptable. I have a few other comments that are <br />primarily housekeeping /organization of the permit application: <br />1. Tables 13 -5 and 13 -7 -1 were updated to reflect the addition of new culvert PM- <br />18. Additionally, the table was revised so that the cells for information pertaining <br />to PM -16 are now blank. PM -16 has been physically removed from its location <br />(NE inlet to Pond 006), so it is appropriate that the tables no longer contain <br />design information for the culvert. The tables should be revised to clarify that the <br />culvert was removed. <br />2. Also on Tables 13 -5 and 13 -7 -1, culvert K -1 remains on this table. This culvert <br />was removed with the implementation of the Pond 016 area slide remediation <br />plan. The tables should be updated accordingly. <br />3. Maps 13 -2 and 20 -2 show culvert PM -16. Please revise the maps to omit culvert <br />PM -16. <br />4. The design information for culvert PM -18, for Attachment 13 -7, should have page <br />numbers. Please revise the design to include pagination. The Division's copy of <br />the permit application package indicates that the first page of the design should <br />begin with 13 -7 -274. <br />5. Page 20 -2.3 was not proposed for revision, but is not current and should be <br />revised. The page includes reference to Road LU -2, which has been reclaimed <br />and is no longer proposed as a permanent road. <br />6. The proposed revisions to Attachment 20 -D appear to omit much of the <br />investigative information (NWCC initial reports) that are in the currently approved <br />version of the attachment. This information needs to be retained to maintain a <br />record of conditions prior to implementation of the slide remediation plan <br />(saturation levels, slide extent, possible causes, etc.) <br />