1986-04-15_GENERAL DOCUMENTS - M1977378

• Permit No: M1977378
• IBM Index Class Name: GENERAL DOCUMENTS
• Doc Date: 4/15/1986
• Doc Name: High Priority Management Plan
• From: MLRD
• To: File
• Permit Index Doc Type: General Correspondence
• Media Type: D
• Archive: No

DEPARTMENT OF NATURAL RESOURCES
9�� L *i David H.Getches,Executive Director
MINED LAND RECLAMATION DIVISION
DAVID C. SHELTON, Director
Richard D.Lamm
Governor
DATE: i/Apri1 15, 1986
TO: Ed Bischoff
FROM: Camille Farrell
RE: HIGH PRIORITY MANAGEMENT PLAN; SUNNYSIDE GOLD CORPORATION'S SUNNYSIDE
MINE AND MAYFLOWER MILL; FILE NO. M-7-3 8, SAN JUAN COUNTY
PROJECT SUMMARY
Permitted: January 25, 1978
Financial Warranty: $447,543.00 (United Bank of Denver Letter of Credit)
Acreage: 140
The Sunnyside Mine/Mayflower Mill is an underground metal mine and affiliated
mill , north of the town of Silverton, San Juan County.
Four tailings "ponds" are present at the millsite, adjacent to the Animas
River. Tailings ponds 1 , 2 and 3 are inactive; tailings pond 4 will be
utilized for mill tails deposition.
Mine drainage emanates from both portals, the American and Terry Tunnels.
Water treatment ponds produce sludge which has been deposited at the millsite,
adjacent to the Animas River. Additional sludge will be disposed of atop
inactive tailings pond number 3, to a depth determined by engineering
stability analyses. Lake Emma, an alpine lake, was undermined as a result of
the mining operation; the area of disturbance will be incorporated into the
permit in a forthcoming amendment.
MANAGEMENT PLANS
I. Review the forthcoming amendment:
1 . Lake Emma stabilization and reclamation plans: in particular,
hydrologic balance of the area:
2. Sludge disposal plan:
A. Engineering analysis determining the final volume and
configuration of the sludge pile;
B. Reclamation of the pile;l
C. Monitoring schedule.
423 Centennial Building, 1313 Sherman Street Denver, Colorado 80203 Tel. [phone]