Decision Memo Completed

Porphyry Basin and Grizzly Bear Mine cabin removal and physical safety closures

Grand Mesa, Uncompahgre and Gunnison National Forests Hinsdale, Colorado Ouray Ranger District

Dismantle and remove, or burn non-historic mining cabin from Uncompahgre Wilderness. Physical safety closures on 2 or 3 nearby mine openings. Install closure on shaft along Bear Creek National Recreation Trail and reinforce portal door in Ohio Park.

Location

Porphyry Basin, accessed from Middle Fork Cimarron Trail. Grizzly Bear Mine openings accessed from Ohio Park and from Bear Creek National Rec. Trail

Project timeline

1
Scoping Start
03/08/2018
2
Decision
05/2018 (Estimated)
3
Implementation
09/2018 (Estimated)

NEPA / regulatory detail

Categorical Exclusion32.2 (8), 36 Cfr 220.6(E)(8)
Special AuthorityNot Applicable / Other
Notice and Comment RegulationNot Subject to Regulations
Project ActivityAbandoned Mine Land Clean-Up
Porphyry Basin Robin Redbreast Cabin Removal and Physical Safety ClosureDecision Signed Date: 05/02/2018
ForestsGrand Mesa, Uncompahgre and Gunnison National Forests
DistrictsOuray Ranger District
Legal Land DescriptionT45N, R6W Sec 34; T43N R7W, Sec. 5 and 9, NMPM
Minerals and geologyWatershed management