2003-05-14_REVISION - M1977342 ‎(3)‎

• Permit No: M1977342
• IBM Index Class Name: Revision
• Doc Date: 5/14/2003
• Doc Name: Summary of the Amendment Application
• From: DMG
• To: Parties to Amendment AM-04 Application
• Type & Sequence: AM4
• Media Type: D
• Archive: No

STATE OF COLORADO
DIVISION OF MINERALS AND GEOLOGY
Department of Natural Resources ,~ , ~~~.~ R~-~ ~ nPI~ C ~-~~ eK
13135herman 6t., Room 2t5 ' 0•~°"" I~/ ~d ~Q~ C` COLORADO
Denver, Colorado 80203 \ D I v I S t O N O F
Phone: [phone] ~ ~~~ ~'~ I'• `~ lYt 111 S RA L $
FAX: [phone] G E O L O G 1'
0.ECLAM ATION•MWING
SAFETY•SC IENCE
DATE: May 14 2003_/
Bill Owens
TO: Anne Beierle, Henderson Mine and Mill (via mail and email) c°~er,ror
Bill Gray, Grand County Planning (via mail and fax) Greg e. warner
Patricia Hesch, US Forest Service (via mail and fax) Executive Director
Ronald W. Cattany
Clear Creek County Commissioners (via mail, email, and fax) Division Director
Clear Creek Economic Development Corp. (via mail and fax) Natural Resource Trustee
Tom Roan, Attorney General's Office (via email)
Sandy Brown, Division of Minerals and Geology (via email)
CC: Carl Mount, Divisio/nf of Minerals and Geology (via email)
FROM: Allen Sorenson ~,j' ~j /
RE: Summary of the Amendment Ann[ication, Permit Amendment AM-014/, HI
and Mill, Climax Molybdenum Company,~Permit No. M-1977-342' J /
A pre-hearing conference for Henderson Mine and Mill permit amendment AM-04 will be held on
Tuesday, May 20, 2003 at 1:30 pm in the County Commissioner's hearing room and the Grand
County Courthouse in Hot Sulphur Springs. This memorandum provides a summary and update of
the status of the permit amendment application.
Proposal to Reclaim the Tailint Impoundment usiu¢ a Wet Cover
Initially, the amendment application requested approval of an alternative reclamation plan for the
tailing impoundment where a free water pond would occupy the western 70 percent of the
impoundment with the remaining 30 percent of the impoundment and the dam face covered with
plant growth media and revegetated to rangeland. Discussions between Henderson and the Division
of Minerals and Geology (DMG) leading up to the submittal of the amendment application
specifically addressed the incorporation of the wet cover into the reclamation permit as being both
alternative to the previously approved reclamation plan and conceptual in natwe. This is because
until designs addressing the engineering and hydrologic issues involved in a wet cover reclamation
project are prepared by Henderson, and reviewed and accepted by DMG there can be no reasonable
assurance that the project will be implemented or even feasible. Alternative reclamation plans are
addressed in the Hazd Rock/Metal Mining Rules and Regulations of the Mined Land Reclamation
Board at rule 6.4.5(2)(b). Under this regulation, until such time that the implementation of the
alternative post mining land use is reasonably assured, the existing plan remains the primary plan
for implementation, and is the plan upon which the amount of reclamation bond is established. As a
result, Henderson is required to implement the dry cover plan until such time that a wet cover plan
may be approved and properly bonded. Consideration of a wet cover plan will be through the
permit amendment process including public notice and the opportunity to provide comments.
Office of Office of Colorado
Mined Land Reclamation Agive and Inactive Mines Geological Survey