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John W. Hickenlooper
<br />Randy McClure Governor
<br />Rio Grande Silver, Inc. Mike King
<br />PO Box 610 Executive Director
<br />Creede, CO 81130
<br />Loretta E. Piifeda
<br />Director
<br />Re: Bulldog Mine, Permit M- 1977 -215, Technical Revision TR -22, Approved,
<br />and Reclamation Cost Recalculation
<br />Dear Mr. MClure,
<br />This office has reviewed the materials submitted by you and Tom Day of Rio Grande Silver, concerning
<br />Technical Revision TR -22, named above, and finds them to be adequate for approval. On June 5, 2013,
<br />the Division approved the technical revision. There are several separate items in the Bulldog Mine permit
<br />being revised under this single revision, and in the interest of clarity, I have listed each item below with a
<br />short description of its respective changes and my comments.
<br />9700 Portal: Reopen and replace existing culvert entry with steel sets and locked door.
<br />History: The portal had been backfilled and the surface was recontoured before 2000 by the prior
<br />operator. In 2008, Rio Grande Silver was approved under TR -14 to re -open the portal by removing
<br />backfill and installing a steel culvert entryway with locking door.
<br />Description: This TR -22 approves the removal of the existing secure entry and installing a new secure
<br />portal entry, consisting of steel sets and locking steel door. It is on pre- existing disturbed ground, with no
<br />topsoil or vegetation. The existing steel culvert will be removed from the surface and disposed.
<br />Mining Plan: Installation will include placement of fill above and around the steel entry to blend with and
<br />stabilize the slope. No increase of affected area.
<br />Reclamation Plan: Reclamation will consist of removing the door and several of the outermost sets,
<br />backfilling the adit with rock and debris for a sufficient distance inby to prevent entry, and recontouring
<br />the surface with onsite rock. No revegetation is required. Increase in reclamation costs.
<br />Road and Roadcut below 9700 Portal: Disturb minor area near the existing monitoring well for widening
<br />the road to allow passage of equipment up to 9700 portal.
<br />History: The monitoring well (MW -3) and the road to the portal currently exist in the permit.
<br />Description: This TR -22 approves the widening of the road up to the 9700 portal at the vicinity of the
<br />monitoring well so that equipment may avoid damaging the well when accessing the portal.
<br />Mining Plan: The roadway at the well location will be widened by excavating material from the cutbank
<br />side, and recontouring the resulting disturbed slope to stabilize it. Excavated materials, including the
<br />segregated topsoil, will be salvaged and windrowed along the roadway to be reused upon final
<br />reclamation. Sediment control will be implemented. Small increase of affected area.
<br />Reclamation Plan: Reclamation of the affected roadcut will include replacing salvaged materials to
<br />recontour and stabilize the cutslope. Topsoil will be replaced, and seeded with the approved seed mix.
<br />Increase in reclamation costs.
<br />Page 1
<br />Office of Office of
<br />Mined Land Reclamation Denver • Grand Junction • Durango Active and Inactive Mines
<br />5TATE OF COLORADO
<br />DIVISION OF RECLAMATION, MINING AND SAFETY
<br />Department of Natural Resources
<br />1313 Sherman St., Room 215
<br />O L O D 0
<br />Denver, Colorado 80203
<br />D o N
<br />Phone: (303) 866 -3567
<br />RECLAMATION
<br />FAX: (303) 832 -8106
<br />MINING
<br />SAFETY
<br />June 7, 2013
<br />John W. Hickenlooper
<br />Randy McClure Governor
<br />Rio Grande Silver, Inc. Mike King
<br />PO Box 610 Executive Director
<br />Creede, CO 81130
<br />Loretta E. Piifeda
<br />Director
<br />Re: Bulldog Mine, Permit M- 1977 -215, Technical Revision TR -22, Approved,
<br />and Reclamation Cost Recalculation
<br />Dear Mr. MClure,
<br />This office has reviewed the materials submitted by you and Tom Day of Rio Grande Silver, concerning
<br />Technical Revision TR -22, named above, and finds them to be adequate for approval. On June 5, 2013,
<br />the Division approved the technical revision. There are several separate items in the Bulldog Mine permit
<br />being revised under this single revision, and in the interest of clarity, I have listed each item below with a
<br />short description of its respective changes and my comments.
<br />9700 Portal: Reopen and replace existing culvert entry with steel sets and locked door.
<br />History: The portal had been backfilled and the surface was recontoured before 2000 by the prior
<br />operator. In 2008, Rio Grande Silver was approved under TR -14 to re -open the portal by removing
<br />backfill and installing a steel culvert entryway with locking door.
<br />Description: This TR -22 approves the removal of the existing secure entry and installing a new secure
<br />portal entry, consisting of steel sets and locking steel door. It is on pre- existing disturbed ground, with no
<br />topsoil or vegetation. The existing steel culvert will be removed from the surface and disposed.
<br />Mining Plan: Installation will include placement of fill above and around the steel entry to blend with and
<br />stabilize the slope. No increase of affected area.
<br />Reclamation Plan: Reclamation will consist of removing the door and several of the outermost sets,
<br />backfilling the adit with rock and debris for a sufficient distance inby to prevent entry, and recontouring
<br />the surface with onsite rock. No revegetation is required. Increase in reclamation costs.
<br />Road and Roadcut below 9700 Portal: Disturb minor area near the existing monitoring well for widening
<br />the road to allow passage of equipment up to 9700 portal.
<br />History: The monitoring well (MW -3) and the road to the portal currently exist in the permit.
<br />Description: This TR -22 approves the widening of the road up to the 9700 portal at the vicinity of the
<br />monitoring well so that equipment may avoid damaging the well when accessing the portal.
<br />Mining Plan: The roadway at the well location will be widened by excavating material from the cutbank
<br />side, and recontouring the resulting disturbed slope to stabilize it. Excavated materials, including the
<br />segregated topsoil, will be salvaged and windrowed along the roadway to be reused upon final
<br />reclamation. Sediment control will be implemented. Small increase of affected area.
<br />Reclamation Plan: Reclamation of the affected roadcut will include replacing salvaged materials to
<br />recontour and stabilize the cutslope. Topsoil will be replaced, and seeded with the approved seed mix.
<br />Increase in reclamation costs.
<br />Page 1
<br />Office of Office of
<br />Mined Land Reclamation Denver • Grand Junction • Durango Active and Inactive Mines
<br />
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