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

CM0001430
TETRATECH
0 August 14, 2008

Mr. Jim Curnutte
Planning Director
Summit County Planning Department
0037 SCR 1005, Peak One Drive
P.O. Box 5660
Frisco, CO 80443
4-"5, si fo 53
Subject: Climax Mine - Robinson Lake Reclaim Pipeline
Dear Jim:
On behalf of Climax Molybdenum Company, we are providing additional information
regarding the Robinson Lake Reclaim Water Pipeline project at the Climax Mine.
As we have discussed one of the facility upgrade projects being undertaken by Climax is
the replacement of the Robinson Lake Pump Station, located in Eagle County. This pump
station is part of the process water reclaim system which allows for the recycling and re-
use of water from the tailing impoundments. The new Robinson Lake Pump Station will
replace a system that was installed in 1936. In addition to the construction of the
replacement pump station, the pipeline from the pump station to the mill (located in Lake
County) will also be replaced. The location of the pump station and the pipeline alignment
are illustrated on the attached site location map (Figure 1). As indicated on this figure,
approximately 4,000 feet of this pipeline crosses Summit County along the southern edge
of the Robinson Tailing Storage Facility. The entire length of this pipeline will be buried
approximately 6 feet below existing grade.
As you are aware the Robinson Lake Pump Station Replacement project was the subject
of a 1041 application in Eagle County, submitted in May of this year. Summit County was
provided a copy of this application as a referral agency. This 1041 permit application was
approved by the Eagle County Board of County Commissioners on June 24, 2008. While
Climax believed that the entire Robinson Lake Pump Station project was exempt from
Eagle County 1041 Regulations, Eagle County requested that the project go through the
1041 permit process, in part due to concerns over the protection of Eagle Park Reservoir.
As a result we have viewed the pipeline as a minor element of the project and concluded
that the buried pipeline through Summit County does not constitute a water supply project
under Summit County regulations as it is not associated with providing water from or to
any storage or distribution system, or otherwise affect water storage or use, within Summit
County.
Tetra Tech
4900 Pearl E. Circle, Suite 300W, Boulder, CO 80301
Tel [phone] Fax [phone] www.tetratech.com
Exhibit 51