2017-05-04_REVISION - C1981010 ‎(2)‎

• Permit No: C1981010
• IBM Index Class Name: Revision
• Doc Date: 5/4/2017
• Doc Name: Application
• From: Trapper Mining Inc
• To: DRMS
• Type & Sequence: PR8
• Email Name: RAR
• Email Name: DIH
• Media Type: D
• Archive: No

Page 3 of 8
PR8 Letter to Robin Reilley
May 3, 2017
A narrative has been added to Sections 2.9, 2.9.1 and 2.9.2 of the permit document. Replacement
pages 2-588, 2-590, 2-591, 2-591b and 2-591c are attached to this letter. The following cultural
resource surveys are included for insertion into Appendix K.
Section XIII: Class III Cultural Resource Inventory by Grand River Institute, BLM-LSFO No.
11.7.2013 (860 acres)
Section XIV: Class III Cultural Resource Inventory by Grand River Institute, BLM-LSFO No.
11.10.2013 (752 acres)
Section XV: Class III Cultural Resource Inventory by Grand River Institute, BLM-LSFO No.
11.1.2016 (1752 acres)
Section XVI: Text Excavation of Site 5MF7762 by Grand River Institute, BLM-LSFO No.
11.2.2016
Section XVII: Text Excavation of Six Sites (5MF319, 5MF7691, 5MF7682, 5MF7727,
5MF7794 and 5MF7795) by Grand River Institute, BLM-LSFO No. 11. 1.2016
Note that older Section VII is included as a two-sided document. This section should replace the
previous one-sided Section VII. This was done to make room for the new sections added to the
Appendix K binder.
c) A geology description that updates Sections 2.7.2 and 2.7.3 of the Trapper Mine permit
application package with the information required by Rule 2.04.6(2)(a) and (b).
As discussed in several previous adequacy responses related to the PR -7 area geologic
description, the general geology of the PR -7 area is similar to the remainder of the mine area as
described in Section 2.7.1 of the Trapper permit document. Geologic cross-sections through the
PR -7 Mine Expansion Area were included in a prior submittal in response to adequacy
comments. At this time, TMI is not asking for approval to mine in the PR -7 area. Site specific
information relative to geologic characteristics of the proposed mining area will be submitted as a
revision at the same time that a mining plan that includes this area is submitted.
TMI has completed a study of overburden characteristics for the PR -7 area. Pages 2-391a through
2-391 z are proposed to be added to the permit document which insert a new Section, Section
2.7.2.3, Overburden Geochemistry of the PR -7 Mine Expansion Area. The inserted section
includes two new figures (Figures 2.7-4a and 2.7-4b) and three new tables (Tables 2.7-8a through
2.7-8c). Section 2.7.2.3 provides a summary of the PR -7 Mine Expansion Area overburden
geochemistry testing and discusses the overburden geochemical testing specific to that area.
The overburden testing program was discussed with the CDRMS in a meeting on April 14, 2014
and agreement reached on the number of drill holes and that the overburden will be evaluated for
its potential suitability as either a plant growth medium or regraded spoil aquifer based on a
number of published criteria as listed in new Section 2.7.2.3. One drill hole was used for the
program and the location of that hole is shown on Map 36. Seventy-six (76) overburden samples
from the PR -7 Mine Expansion Area were analyzed for 30 physical and chemical parameters in
this evaluation.
The evaluation found that the overburden materials within the PR -7 Mine Expansion Area are
suitable for reclamation and are essentially free of constituents that pose a threat to plant growth,