2013-02-12_PERMIT FILE - M2013007 ‎(17)‎

• Permit No: M2013007
• IBM Index Class Name: PERMIT FILE
• Doc Date: 2/12/2013
• Doc Name: New 112c Application
• From: Rocky Mountain Aggregate and Construction, LLC
• To: DRMS
• Email Name: WHE
• Media Type: D
• Archive: No

Mining Area
Acreage I Topsoil (C.Y.)
Overburden (C.Y.)
Gravel (tons)
2,298,000
Mining Area 1
47.77
77,069
77,069
Mining Area 2
42.22
68,115
68,115
2,622,000
Mining Area 3
43.61
70,357
70,357
3,082,000
Mining Area 4
43.35
13.68
69,938
69,938
2,904,000
413,000
Mining Area 5
22,070
22,070
Total
190.63 I 307,550
307,550
11, 319, 000
Montrose County Engineering. This entire new road will be part of the permit area. The access to
the shop and office area is directly from T Road. The anticipated haul route will utilize this new
Access Road, which converges with T Road east of the residences and then north or south on
Highway 550 depending on the location of the project. There is minimal overburden on site, but
it averages at approximately 1 foot thick with 1 foot of topsoil above the overburden. The loose
gravel deposit is very uniform at approximately 25 -35 feet thick. The deposit tapers out as the
terrace transitions from the flat top to the side slopes. Below the loose gravel deposit is shale
which is exposed on the side slopes of the terrace.
Topsoil will be salvaged from all Mining Areas. The expected topsoil thickness is 12 inches.
Initially, topsoil will be stockpiled in the southwest corner of the permit area (See Map C -2A) in
Topsoil Stockpile 1. Approximately 77,000 cubic yards of topsoil from Mining Area 1 will be
stockpiled here. The topsoil in this stockpile will be used for reclamation. All other topsoil will
be salvaged and directly replaced on areas that have been previously excavated. The operation
will mine for a few months per year and produce stockpiles to last the remainder of the year.
Product sales will occur throughout the year. Crushed product will be stored within the Mining
Area 1. All final slopes will be mined to 3H:1 V or less to reduce the amount of reclamation
required after mining. In reality, the upper gravel portion of the terrace will be removed, so that
the reclaimed slopes in the mining area will actually be milder than 8H:1 V in almost all cases.
The overburden will not be stockpiled but directly replaced on the pit floor as it is mined. In
addition to the overburden, crusher fines will be placed on top of the shale to provide a deeper
growth medium above the shale. The mining areas and stockpiles are shown on Map C -2B.
Uncompahgre Pit, February 2013 D -2
Table D -1 Mining Area Material Table