2018-12-24_REVISION - C1981010

• Permit No: C1981010
• IBM Index Class Name: Revision
• Doc Date: 12/24/2018
• Doc Name: Adequacy Review #2
• From: DRMS
• To: Trapper Mining Inc
• Type & Sequence: PR9
• Email Name: RAR
• Media Type: D
• Archive: No

My review of the proposed revision with respect to these rules follows. Adequacy
review questions are numbered and italicized.
Revised Pages, Tables and Maps:
Revised page 3-27a has been considerably truncated, removing the historical
discussion and reference AAI geotechnical report regarding the 2006 slide.
1. Please explain TMI's decision to remove this historical perspective from the
permit at this time. It seems relevant to retain until Phase III bond release.
Trapper Response: The historical discussion was put back into enclosed page 3-27a. The tense was changed
from present to past.
24 December DRMS: Trappers response is adequate.
Table 7.8.2A Additional Culvert Listing, lists culverts from various permitting
actions that are non haul road culverts. With the exception of culverts OH3 and
OHS, DRMS did not locate the culverts listed in this table on any of the M51 maps.
Additionally, three 10' culverts near the Industrial Waste Pond and culverts A113,
DC12 and ASH2 did not appear on the map.
2. Please either explain the reason for not showing these culvert or update the
M51 maps with these listed culverts so that what is on the ground is shown
on the map.
Trapper Response: Foremost, the table referenced in this comment is table 4.8.2A, not 7.8.2A as given
in the adequacy review. Per a discussion with Robin Reilley during a partial inspection of the mine in May,
2018 the M51 map was reviewed and the culverts in question were located that were listed in Table 4.8.2A.
The other six culverts referenced above do not appear on the map or Tables 4.8.2 and 4.8.2A as they have
been removed from the site.
24 December DRMS: Trappers response is adequate.
Trapper Mine Inc's, application referenced page 3-48 submitted as a revised page.
DRMS was unable to locate this page in the submittal. Likewise, this page was not
referenced in the Cross reference Index.
3. Please inform DRMS if TMI intended to update this page and if so, please
submit as a revised page.
Trapper Response: The referenced page was included by mistake. There was no change to the page and
none was intended.
24 December DRMS; Trappers response is adequate.
Table 4.8-1 Water Depletion Calculation (pg. 4-172a), depicts current conditions at
Trapper Mine. Once the proposed Deacon and Deal ponds are built and the
Nighthawk Pit developed, this table requires updating.
Trapper Response: Table 4.8-1. There is actually a calculation in Table 4.8-1 that includes projected
water depletions for future pond construction. In addition, the overall depletion estimate is very
Trapper PR9 2"`' Adequacy Prepared by: R. Reilley, LISP, M.S. Page 3
Date: December 2018