2014-03-05_REPORT - M1977493

• Permit No: M1977493
• IBM Index Class Name: REPORT
• Doc Date: 3/5/2014
• Doc Name: Annual Fee/Report/Map
• From: Climax Molybdenum Company
• To: DRMS
• Email Name: ECS
• Media Type: D
• Archive: No

ChmaxMolybdenum
A Freeport- McMoRan Company
Sent by Certified Mail
March 3, 2014
Eric Scott
Environmental Protection Specialist
Division of Reclamation, Mining and Safety
Department of Natural Resources
1313 Sherman St. Room 215
Denver, Colorado 80203
Climax Mine
Hwy 91 — Fremont Pass
Climax, CO 80429
Phone [phone]
Fax [phone]
Re: 2013 Annual Report, Climax Molybdenum Company - Climax Mine, Permit No. M-
1977 -493
Dear Mr. Scott:
Enclosed please find the 2013 Annual Reclamation Report for Climax Molybdenum Company —
Climax Mine (Climax) and a check to the Division of Reclamation, Mining, and Safety (DRMS)
for the annual fee of $1,150.00. The enclosed Annual Report and attachments follow the format
of the questionnaire we received in the Annual Fee Invoice and Report Request letter dated
February 3, 2014. The report describes 2013 reclamation and disturbance activities, estimated
reclamation and disturbance activities planned for 2014, and provides information on water
quality monitoring and weed control.
Climax has collected sufficient data at the Point of Compliance (POC) wells, with the exception
of well ARK- MW -001D, to propose Numeric Protection Levels (NPLs) for the Indicator
Parameter list specified in the Water Quality Monitoring Plan (WQMP). Two POC wells
(ARwell and GWM -2) had previously established NPLs, while the other POC wells have been
compared to the Colorado Water Quality Control Commission Basic Standards for Groundwater
(CBSG) until enough data were collected to calculate NPLs according to the methods in the
WQMP. With the exception of dissolved manganese at wells EVMW -3S, EVMW -3D and TM-
MW-002D, and dissolved manganese and dissolved iron at well EV -MW -004, the proposed
NPLs reflect the CBSG. Due to seasonal variability in groundwater concentrations from these
wells for dissolved manganese and dissolved iron, further monitoring is needed to characterize
conditions and establish NPLs. As we discussed previously with you, Climax has begun
monthly monitoring at EVMW -3S, EVMW -3D, TM- MW -002D, and EV -MW -004 and the
results will be reviewed at the end of 2014 to established appropriate NPLs for manganese and
iron.
Climax also has reevaluated the way that disturbed and reclaimed acreage were previously
surveyed and mapped by its consultants and has made several corrections to the 2013 Annual
Report due to overlapping survey results. In addition, Climax has reevaluated the way land is
classified for purposes of annual reporting to DRMS. Beginning in this 2013 Annual Report,
land classified per the DRMS questionnaire under item 12 will equate to areas where reclamation
is in progress and where reclamation performance bond has not been released. This includes all