2013-07-09_REVISION - C1981010 ‎(7)‎

• Permit No: C1981010
• IBM Index Class Name: Revision
• Doc Date: 7/9/2013
• Doc Name: Proposed Decision and Findings of Compliance
• From: Trapper Mining Inc
• To: DRMS
• Type & Sequence: RN6
• Email Name: JLE
• Email Name: SB1
• Media Type: D
• Archive: No

XII.
Range Sites A and B and 43.6 % effective cover on Range Site C. The litter
component included must be natural.
The production standards are based on the lower confidence limit of the historic
production means on each range site, utilizing data from 1979 -1985. The standards
are as follows:
Seed mixes and revegetation practices are designed to meet diversity standards set
forth in the permit for herbaceous species and woody shrub species. These
standards were revised through TR -71, approved in 1998.
The diversity standard for herbaceous species is based on pre- mining historical
data. The standard is:
1) At least five principal species including a minimum of four cool season
perennial grasses and a minimum of one perennial forb.
2) Each principal species shall contribute no less than 3.0% relative cover.
3) No single species shall contribute in excess of 50% relative cover.
4) No four species in combination shall exceed 80% relative cover.
The applicant will reestablish shrubs on Range Sites A and B by including various
native shrubs in the seed mixes and by transplanting mature woody shrub clumps.
A minimum of 250 mature shrub pads will be transplanted in each clump. The
clumps are approximately 1,400 apart. The shrub density standard on Range Sites
A and B is a minimum 400 live stems per acre and a minimum 50% survival of
pads within each clump. There is no shrub density standard for Range Site C.
(4.15.7(1)).
Post - mining Land Use
The post- mining land use is discussed under Section 4.2 of Vol. IV of the permit
application.
Cropland, rangeland and wildlife habitat are the currently approved post- mining land
uses. Recreational uses such as picnicking and hiking during the summer months as
well as cross - country skiing and snowmobiling during the winter months would be
compatible with the reclamation and the surrounding areas. Industrial use of the
facilities area is possible but these facilities are not currently approved as permanent.
The Division has approved the alternative post- mining land uses of recreation (mine -
wide) and industrial development of the facilities area only. These alternate land uses
Trapper Mine
32
July 9, 2013
mg s /m2
lbs /acre
Range site A
62.39
556.14
Range site B
42.49
378.76
Range site C
47.46
423.06
Seed mixes and revegetation practices are designed to meet diversity standards set
forth in the permit for herbaceous species and woody shrub species. These
standards were revised through TR -71, approved in 1998.
The diversity standard for herbaceous species is based on pre- mining historical
data. The standard is:
1) At least five principal species including a minimum of four cool season
perennial grasses and a minimum of one perennial forb.
2) Each principal species shall contribute no less than 3.0% relative cover.
3) No single species shall contribute in excess of 50% relative cover.
4) No four species in combination shall exceed 80% relative cover.
The applicant will reestablish shrubs on Range Sites A and B by including various
native shrubs in the seed mixes and by transplanting mature woody shrub clumps.
A minimum of 250 mature shrub pads will be transplanted in each clump. The
clumps are approximately 1,400 apart. The shrub density standard on Range Sites
A and B is a minimum 400 live stems per acre and a minimum 50% survival of
pads within each clump. There is no shrub density standard for Range Site C.
(4.15.7(1)).
Post - mining Land Use
The post- mining land use is discussed under Section 4.2 of Vol. IV of the permit
application.
Cropland, rangeland and wildlife habitat are the currently approved post- mining land
uses. Recreational uses such as picnicking and hiking during the summer months as
well as cross - country skiing and snowmobiling during the winter months would be
compatible with the reclamation and the surrounding areas. Industrial use of the
facilities area is possible but these facilities are not currently approved as permanent.
The Division has approved the alternative post- mining land uses of recreation (mine -
wide) and industrial development of the facilities area only. These alternate land uses
Trapper Mine
32
July 9, 2013