Overview of the Nevada Creek Restoration and Mitigation

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The Nevada Creek/Alaska Treasure Mine is a 445-acre parcel located on the southeast side of Douglas Island, Juneau, Alaska.

The mine site was in operation for a few brief years and was abandoned over a century ago. Nevada Creek Mitigation Partners has earmarked the site for ecological lift to mitigate for the wetland impacts of one of our clients and looks forward to providing the restoration and preservation of Nevada Creek.

In an effort to conserve, restore and rehabilitate the Nevada Creek watershed from the impacts of historic mining and enhance public safety, Nevada Creek Mitigation Partners proposes to:

  • Restrict access to tunnels and adits by gating or closing them
  • Remove tailings from affected areas
  • Stabilize waste rock dump slopes
  • Stabilize stamp mill cams and debris
  • Remove boilers and refuse
  • Remove iron stock
  • Establish land conservation and historic preservation easements

Tunnel/Adit Closures – The Upper Tunnel/Adit, Middle Tunnel/Adit, and Shoreline Tunnel/Adit closures are proposed by the installation of either permanent or locking rebar grate at the adit openings to restrict pedestrian access.
Tailings Removal – Approximately 14 cubic yards (10-foot by 20-foot pile) of mine tailings will be removed from the Upper Mine Area and be disposed of using acceptable conventional standards. Restoration of the tailings area will involve backfilling with borrowed native soil and planting with native trees and shrubs.
Waste Rock Dump Slope Stabilization – Proposed work associated with stabilization of the Middle Mine Area’s eroding waste rock dump slopes involves the installation of anchored wood cribs/horizontal logs along the eroding slopes, and planting along the slopes to provide additional stabilization. Stabilization activities will disturb an approximate 25,500 cubic yard area.
Stamp Mill Cams Stabilization – At present, two cams remaining from the stamp mills located in the Upper Mine Area are in precarious positions which could cause them to either tip over or slide down an embankment, posing a serious risk of injury for anyone in the area. Stabilization of the stamp mill cams will take place by using a winch to tip the cams so they are both resting horizontally on the ground. The process is thought to possibly disturb one cubic yard of soil.
Boiler and Refuse Removal – Historic steam boilers on concrete foundations located within the Lower Mine Area will be removed. The boilers have degraded to the point where they have become a safety hazard, as they have developed sharp openings in the metal surface which could cause damage to a person attempting to crawl into them. Removal will disturb approximately 22 cubic yards of soil.
General refuse located in the Upper Mine Area will be removed, and consists of wood, nails, bolts, components of the 20-stamp mill remaining in the area (gears, pulleys, stamps, fuel drum), and conveyor belt material.

Iron Stock Removal – (APE 3) – Within the Middle Mine Area is a section of exposed narrow gauge railroad iron stock spanning from the eastern terrace 30 feet above Nevada Creek to the western terrace and Main Adit. The iron stock will be dismantled and relocated along the bank of the creek.

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