GENERAL34093

• Permit No: C1983058
• IBM Index Class Name: General Documents
• Doc Date: 3/31/1995
• Doc Name: PROPOSED DECISION & FINDINGS OF COMPLIANCE FOR RN2
• Permit Index Doc Type: FINDINGS
• Media Type: D
• Archive: No

species are desirable and necessary to achieve the approved post-mining land use,
and are not poisonous or noxious (4.15.2). Twin Pines has already used introduced
species to stabilize the topsoil piles and vegetate the fill apron over the entries. The
introduced species include: Cicer milkvetch, Streambank wheatgrass and Western
wheatgrass.
The Division has approved of the seed mix, located on page 88a of the permit
application. A vegetative production rate of 520 lbs. of dry herbage per year has
been permitted. The production rate will be based oa 90 percent growth with a
90 percent confidence level.
XI. Post-Mining Land Use
The post-mining land use -rangeland and wildlife habitat -has been approved by the
Division. The pre-mining land use was mining, rangeland and wildlife habitat. The
post-mining land use is consistent with the Fremont County zoning regulations for
agricultural use. No changes in the land use or zoning are anticipated or proposed at
this time.
XII. Protection of Fish, Wildlife and Related Envirotunental Values
Wildlife habitat is the planned post-mining land use. The applicant has selected
appropriate plant species and distributions to benefit wildlife (4.18.(4)(1)). Wildlife
resources for the site were inventoried using the "Environmental Impact Statement,
Royal Gorge Area," prepared by the Bureau of Land Management, United States
Department of the Interior, and can be found in permit application pages 65 and 66.
XIII. Subsidence Control
According to the original Findings Document in 1983, subsidence monitoring and a
subsidence control plan were unnecessary to assure compliance. On page 96 of the
permit application is an inventory of structures and renewable resource lands. A
subsidence survey of the immediate and adjacent area was also completed, which
contained predictions of anticipated subsidence effects based on prior mining in the
area.
Twin Pines subsidence inventory of renewable lands identified only limited grazing
lands and pinon-juniper woodland within the permit and adjacent area. No structures
are located within the potential angle of draw above the mined. area. Therefore, the
operation is not projected to cause material damage to structures or the limited
grazing and woodland areas.
Ten years of mining have recorded no subsidence effects from the Twin Pines No. 2
Mine. The mine ceased operations on August 31, 1993. The Division fords the
operation to be in compliance with the requirements of this section.
XIV. Concurrent Surface and Underground Mining
There is no concurrent surface mining activity associated with the underground
operation of Twin Pines No. 2 Mine.
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