2011-03-14_REVISION - M1977493 ‎(42)‎

• Permit No: M1977493
• IBM Index Class Name: REVISION
• Doc Date: 3/14/2011
• Doc Name: Exhibit List, Exs. 51 to 53
• From: Climax
• To: MLRB
• Type & Sequence: AM6
• Media Type: D
• Archive: No

CM0001431
Mr. Jim Curnutte
TETRATECH August 14, 2008
Page 2 is
The replacement of the reclaim pipeline from the Robinson Lake Pump Station is an
upgrade to an existing water system being proposed for the purpose of replacing old and
outdated equipment without expanding the capacity of the system. The replacement
pump station will have a design capacity of 10,000 gallons per minute (gpm), where the
existing system had a capacity of 15,000 gpm. While the location of the new pipeline will
not exactly coincide with the existing pipeline (which has been sealed and abandoned in
place) it is located in the same general area, and is within the wastewater collection area
of the Site's CDPS discharge permit and the permitted affected land boundary, as
authorized by the Mine Reclamation Permit issued by the Colorado Division of Mining,
Reclamation, and Safety (DRMS). Additionally, there are no identified wetlands, riparian
areas, floodplains, or sensitive areas along the alignment of the pipeline. The installation
of the replacement reclaim pipeline does not change the water management system at the
site. Since the construction of the original Robinson Lake Pump Station in 1936, water
stored in Robinson Lake has been pumped to the mill for use as process water in the
milling circuit. The project does not involve a change in land use, will have no impact or
effect on current of future land uses within or adjacent to the Climax Site, nor does it
impact or effect local government services within Summit County.
Based on the information provided in this letter, Climax is requesting your concurrence
with the determination that the installation of the section of buried reclaim pipeline through
Summit County is exempt from 1041 review.
Similar to the Tailing Distribution Line (TDL), the Robinson Lake Pump Station and
Pipeline were included in Technical Revision (TR) 14, submitted to the DRMS on May 7,
2008. The DRMS approved this Technical Revision on June 3, 2008. A copy of the
DRMS approval letter was provided with a letter from Climax regarding the TDL dated
June 16, 2008.
Consistent with our recent correspondence regarding the TDL, and because the
installation of the reclaim pipeline was approved under a. technical revision to the active
Climax Mine Reclamation Permit, which was in effect prior to January 26, 2004, this
project does not constitute a material modification of the mining or milling operation at
Climax. Therefore, Climax remains a legal, non-conforming mining activity under Section
3812 of the Summit County Development Code. As a grandfathered mining activity this
project is exempt from regulation under the Summit County Mining Zoning Regulations
and the related Mining/Milling Performance Standards (Section 3812.05) do not apply.
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