2000-04-27_REVISION - M1977342

• Permit No: M1977342
• IBM Index Class Name: Revision
• Doc Date: 4/27/2000
• Doc Name: TR-09 approval with 4 stipulations
• From: DMG
• To: CLIMAX MOLYBDENUM CO
• Type & Sequence: TR9
• Media Type: D
• Archive: No

• .. -iii iiiiiiiiniii iii • ~:
999 STATE OF
coLo~aDo
DIVISION OF MINERALS AND GEOLOGY
Depanmern of Natural Resources
1713 Sherman St.. Room 215
Denver, Colorado 80203
Phone: (3031 D66-3567
FAX: [phone]
April 27.2000
Mr. Erich Bower
Climax Molybdenum Company
19302 County Road #3
Pazshall, CO 80468
RE: 2-Dam Decant Grouting and 3-Dam Seep Water Management, Henderson Mill,
Technical Revision TR-09, Permit No. M-77.342
Deaz Mr. Bower:
DIVISION OF
MINERALS
GEOLOGY
RECLAMATION
MINING•SAf ETY
Bill Owens
Governor
Greg E. Walther
Execuove Duecior
Mich~e( 8. Long
Division Director
On April 27, 2000 the Division of Minerals and Geology issued a conditional approval of the technical
revision application submitted to the Division on April 12, 2000 addressing the following:
Grouting a portion of the abandoned No. 2-Dam decant system and the installation of parallel
gravity lines to route No. 3-Dam seepage to the No. 1-Dam seepwater collection system.
~ The terms of the technical revision TR-09 approved by the Division are hereby incorporated into Permit
No. M-77-342. The conditions of the Division approval are listed below. Please note that all other
provisions of Permit No. M-77-342 remain in full force and effect.
Stipulation No. Description
The 3-Dam seepage pipelines will not be put into service until the Division has
issued written acceptance of the certification of the facility as required under
Rule 7.3.2(2) of the Hard Rock/Metal Mining Rules and Regulations. The
certification shall be accompanied by a construction report that will detail the
installation of the pipelines, including pipe and valve specifications, adescription
of the inlet structures, seepage barriers and south dike reconstruction, a
description of any problems that occurred and their resolution, and a description
and test results of pipeline integrity testing.
2 The 3-Dam seepage pipelines will be tested for integrity at least once per year
and a description of the testing and results will be provided in the annual
reclamation report for the Henderson Mine and Mill
Within 60 days of completion, a grouting report will be provided for the 2-Dam
decant system grouting operation. The report will detail the installation of the