2016-06-17_REPORT - M1990057

• Permit No: M1990057
• IBM Index Class Name: Report
• Doc Date: 6/17/2016
• Doc Name: Annual Fee/Report/Map
• From: Leadville Mill
• To: DRMS
• Annual Report Year: 2016
• Email Name: MAC
• Media Type: D
• Archive: No

Permit M1990-057 4
Leadville Mill, Union Milling Company, LLC
June 17,2016
MW-1 is a shallow well reaching only a perched aquifer. This well continues to contain
insufficient water level for collecting and testing water.
2. Surface water Quality Sampling_ Quarterly surface water quality sampling from three
stations, SW-1 through SW-3 could not be performed due to insufficient stream flows to
collect samples during the summer, fall, winter and spring sampling periods.
3. TSF Construction. Delays associated with the final construction and operation of the
mill continue to be influenced by poor metals market conditions. Meetings with potential
investors were not successful in 2015 and we were not able to secure financing. We
continue to meet with interested parties and while hopeful that we will receive funding to
complete the project, it is not likely that this will happen to support construction activities
for the 2016 building season.
4. Si na e. Permanent mill permit identification signs (metal-style) were maintained on
the main gate to the facility and on the mill building, identifying the UMC and our permit
number.
5. Fencing. The barbed wire property boundary fence was repaired in various areas
where it was broken by wildlife. Fence maintenance is required by our Lake County
Conditional Use Permit.
6. Permit Boundary. Permit boundary stakes were maintained as required.
7. Mill Facility Activity. The mill buildings and equipment were maintained in preparation
of reconditioning and restarting the mill.
8. Sediment Control. 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.
9. Ore Stockpiles. 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. Repairs were made as
necessary on visqueen covers in October 2015.
10. Weed Control. Weed control measures were performed as required and according to
the weed management plan. Identified weed species are Oxeye daisies and Canada
thistle. Weeds occur sporadically near access roads, the mill building and the fence
bordering the water treatment plant (East side of property). Over the last 5 years,
weeds have been significantly eliminated. Current practice involves walking around
property and spraying weeds as required over the June—September growing season.
11. Permitting Activity. The following permitting activities were performed during the year.
• UMC submitted a status report to the Lake County Commissioners as required
by our Conditional Use Permit (CUP).
• UMC, in a public meeting held on December 21, 2015, revised certain
requirements in its CUP. The CUP has, with unanimous agreement by the
County Commissioners, made the following amendments to the CUP
o Permanent water must be obtained within 3-years after the
commencement of operations;
o The firewater tank must be installed and operational prior to
commencement of operations.
o The condition requiring a non-terminable easement for access was
changed to a requirement that the permit holder must be able to
demonstrate on an annual basis if requested that he or she has the
legal and physical access to the site.