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2007-04-05_GENERAL DOCUMENTS - M1977493 (2)
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2007-04-05_GENERAL DOCUMENTS - M1977493 (2)
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Last modified
8/24/2016 3:16:39 PM
Creation date
10/27/2010 7:54:02 AM
Metadata
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Template:
DRMS Permit Index
Permit No
M1977493
IBM Index Class Name
GENERAL DOCUMENTS
Doc Date
4/5/2007
Doc Name
Climax Mine Arkansas Channel Restoration Project
From
Climax Molybdenum Company
To
COE and DRMS
Permit Index Doc Type
Gen. Correspondence
Email Name
ACS
Media Type
D
Archive
No
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Climax Mine Arkansas River Restoration Proiect <br />Forth, in the event that Climax decides to reopen the underground mine, the pipeline will be in <br />place to contain and transport diverted water. <br />During the construction phase the unprotected entrance to the underground concrete pipe does <br />create a safety concern. This concern can be mitigated however by attaching a circular steel plate <br />gate to the 72-inch opening. This gate will be constructed to open and close from the top utilizing <br />a standard irrigation-type screw mechanism. Additional safety and debris protection will also be <br />added to the opening by attaching a heavy duty grated rack. <br />2.2.5 Transplanting On-Site Vegetation <br />The Habitat Team will transplant established vegetation from within the Storke affected area <br />boundary to selected areas immediately adjacent to the reconstructed channel when possible. <br />When adequate materials cannot be procured from the project site, commercially available native <br />plant material will be utilized. The benefits of transplanting established vegetation from riparian, <br />wet meadow and mesic ecotypes adjacent to the reconstructed channel include: <br />• Improved availability and survival rates compared to commercially available materials; <br />• The provision of instant cover, thereby reducing initial erosion rates; <br />• Increased plant species diversity, supporting ecosystem health; <br />• Instant creation of essential habitat; and <br />• Improved aesthetics by reducing maturation times for transplanted species. <br />In order to improve survival rates compared to commercially available vegetation, the Habitat <br />Team will preferentially select locally adapted plant materials, which are often not available from <br />seed or as containerized material. A modified front end loader bucket (9'L x 4'W x 2'D) will be <br />used to transplant vegetation pads of herbaceous and shrubby plant materials onto the channel <br />banks. This equipment will be provided by the Habitat Team to support the transplanting process. <br />To improve the variability of vegetation types and structure of the initial vegetative cover, <br />transplants will be used when available. Transplants will also be more effective in providing <br />necessary components to support a variety of invertebrate life cycles important to the fishery <br />development. Essential trout habitat will be created using bank-side transplants to stabilize hard <br />structures installed above incised banks. Additionally, larger sub-alpine fir and Engelmann spruce <br />tree spade transplants ranging in height from 6 to 20 feet will provide periodic shade on the water <br />surface, screen hard structures and provide the completed project an important aesthetic <br />component that will be visible to the public. <br />3.0 PROJECT SCHEDULE <br />The Habitat Team's schedule for the Climax Mine Arkansas River Restoration is based on the <br />assumption that Climax will authorize the Habitat Team to begin work by May 1, 2007 (weather <br />permitting) and complete construction and revegetation activities by October 31, 2007. Due to <br />the short construction season, it is critical that channel excavation and reconstruction activities are <br />completed by then end of August to allow approximately two months for soil amendments, <br />seeding and transplanting activities to be completed before October 31. As stated previously, our <br />Team believes that restoration should be completed within a three-year period, to maximize the <br />benefits of reclamation activities on stream channel stability. <br />Based on the Habitat Team's experience in high altitude restoration and our experience working <br />with the mining industry, we are confident of our ability to meet this schedule. If requested, a <br />final project review meeting can be scheduled in mid April with Climax staff and the interested <br />regulatory agencies. As an agency with an interest in this project, Climax wishes to inform you <br />Habitat Team March 28, 2007
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