2013-06-13_REPORT - M1990057

• Permit No: M1990057
• IBM Index Class Name: REPORT
• Doc Date: 6/13/2013
• From: The Union Milling Company
• To: DRMS
• Permit Index Doc Type: Annual Fee/Report
• Email Name: MAC
• Media Type: D
• Archive: No

Permit M1990 -057
Leadville Mill, Union Milling Company, LLC
June 13, 2013
from Calais Resources to UMC. Additionally, no trespassing signs and warning signs
were maintained, as needed, on the property boundary (which includes the permit
boundary) fence. The barbed wire property boundary fence was re -wired according to
Colorado Department of Wildlife recommendations and as required by our Lake County
Conditional Use Permit. The fence was also repaired and tightened as needed.
4. Permit boundary stakes were maintained as required.
5. The mill buildings were maintained in preparation of reconditioning and restarting the
mill. The mill equipment continues to be operated as part of maintenance testing, but
no material was processed by the equipment.
6. Sediment control measures were performed on an as needed basis (temporary silt
fence construction around the ore stockpiles, temporary historic tailings storage, and
new tailings storage facility). Additionally, culverts were cleaned, and berms and roads
were maintained as required.
7. Ore stockpiles remain covered with visqueen material as a temporary measure to
minimize acid generating potential of sulfidic ores. This visqueen material remains in
place as long as the material remains in place. The visqueen covers were replaced in
October 2012 on all three low grade ore piles. Repairs were made as necessary on
visqueen covers in May and early -June 2013.
8. Weed control measures were performed as required.
9. UMC and Calais Resources terminated the agreement to treat Cross Mine ore at the
Leadville Mill.
10. Additional mill equipment was ordered. Construction of mill building expansions
continued.
11. The following permitting activities were performed during the year.
• Lake County Conditional Use Permit review was held on September 10, 2012.
The county commissioners unanimously approved the CUP in the public
meeting.
• An amendment to M1990 -057 to convert from a 110(2) to a 110(d) was submitted
on April 19, 2013.
• UMC filed for a Succession of Operators from Calais Resources Inc. to Union
Milling Company, LLC on April 19, 2013. The SO was approved on May 3, 2013.
• TR-4, a material change request, was submitted to CDRMS May 16, 2013,
addressing the material change for the tailings storage facility from a clay liner to
a geosynthetic clay liner.
Anticipated Activities: June 18. 2013 to June 17. 2014
No new disturbances are planned for the Leadville Mill. Construction activities will continue
within the existing disturbed area to finish the tailings storage facility. Exhibit TSF 02 is
submitted showing the current disturbance outline and major proposed activities within the
current disturbance area.
UMC will initiate mill operations as the permits and construction allow. UMC is targeting August
2013 for initiating mill startup.
Leadville Mill activities:
1 CDRMS TR -4 revision changing construction materials approval anticipated July 2013.
2 Mill equipment, replacement and repair summer 2013.
3 SWMP application July 2013. (No NPDES)
4 MSHA compliance anticipated July 2013.