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2021-09-27_REVISION - M1990057
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2021-09-27_REVISION - M1990057
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Last modified
1/12/2025 2:02:19 AM
Creation date
9/27/2021 4:35:44 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1990057
IBM Index Class Name
REVISION
Doc Date
9/27/2021
Doc Name
Adequacy Review Response
From
The Union Milling Contractors
To
DRMS
Type & Sequence
CN1
Email Name
DMC
Media Type
D
Archive
No
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Mr. Dustin Czapla 4 <br /> CDRMS <br /> September 24,2021 <br /> • The low permeable till cap layer isolates surface water from the tailings and minimizes <br /> infiltration into the tailings deposit. <br /> • Improved discharge water quality is expected due to the elimination of a standing pond <br /> and reduced infiltration. <br /> • Entire TSF area is returned to a terrestrial landscape, as close as practical to pre-mining <br /> conditions. <br /> 8. Rule 6.4.7 Exhibit G —Water Information <br /> Pursuant to Rule 6.4.7 (3) please provide an estimate of the project water <br /> requirements, including flow rates and annual volumes for the development, mining <br /> and reclamation phases of the project. <br /> Response <br /> For milling operations, under steady state, we will consume approximately 22.2 gpm. This <br /> equates to 32,000 gallons per day, or 11.2 million gallons per year. This is based on 24 hr/day, <br /> and 350 days per year. Additionally, it is estimated that 1,000 gallons of water per day will be <br /> used for road dust control for 120 days per year. <br /> There is no plan to irrigate reclaimed areas. <br /> 9. Rule 6.4.7 Exhibit G —Water Information <br /> Pursuant to Rule 6.4.7 (4) please provide the projected amount from each of the <br /> sources of water to supply the project water requirements for the mining operation <br /> and reclamation. <br /> Response <br /> Primary source: Parkville Water, 28,000 gallons per day. <br /> Run of Mine ore will contain approximately 4% moisture which equates to 4,000 gallons per day. <br /> 10. Rule 6.4.12 Exhibit L— Reclamation Costs <br /> Task 3 of the Reclamation Cost Estimate provided with your application shows <br /> removal cost for on-site reagents. Costs for two of the line items, Cyanide and <br /> Others were left blank. Please include these costs in your reclamation cost <br /> estimate. <br /> Response <br /> A draft version of the reclamation cost estimate was inadvertently included in the permit <br /> application. The correct version is attached in Appendix 5-2. <br /> 11. Rule 6.4.19 Exhibit S — Permanent Man-made Structures <br /> Your application includes structure agreements that are not executed. Please <br /> provide fully executed structure agreements for the following structures located <br /> within 200 feet of the affected area: <br /> (1) Leadville Sanitation District sewer pipeline, polishing pond and fence <br /> (2) Benson, George A. and Elizabeth L. access road and residence <br /> (3) Phillips Revocable Trust, access road and concrete structure <br /> (4) Wood, Derrick and Christina access road <br /> (5) Fowler, Justin Brown and Anne Marie access road <br /> (6) Xcel Energy Gas Pipeline and Power Line. <br />
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