Now showing items 1-14 of 14

    • Buffalo Mine abbreviated preliminary assessment 

      Wallowa-Whitman National Forest (Agency : U.S.) (2008-08)
      Assesses mine site on moderately steep side slopes, consisting of two adits, associated wasterock and tailing ponds, one with water treatment facilities and miscellaneous buildings. A Niton XLt unit found that all metals ...
    • Cap Martin complex abbreviated preliminary assessment 

      Wallowa-Whitman National Forest (Agency : U.S.) (2006-08)
      Assesses site consisting of four collapsed adits, one of which has water discharge, and 6000-80000cy of wasterock materials, most of which is adjacent to Granite Creek. There are numerous trenches and apparent hydraulic ...
    • Golden Fraction abbreviated preliminary assessment 

      Wallowa-Whitman National Forest (Agency : U.S.) (2006-08)
      Assesses site consisting of a large collapsed adit and approximately 3000cy of wasterock material adjacent to Granite Creek. A Niton XLt found that most metals at the site exceeded screening criteria for birds, invertebrates, ...
    • Granite Creek Mine #5 abbreviated preliminary assessment 

      Wallowa-Whitman National Forest (Agency : U.S.) (2006-08)
      Assesses mine site consisting of a large collapsed adit and approximately 500cy of wasterock material adjacent to Granite Creek, with numerous trenches and apparent hydraulic mining. A Niton XLt unit found that most metals ...
    • Granite Creek Mine #6 abbreviated preliminary assessment 

      Wallowa-Whitman National Forest (Agency : U.S.) (2006-08)
      Assesses mine site consisting of a large collapsed adit and approximately 1000cy of wasterock material, which is adjacent to a small ephemeral tributary to Granite Creek. A Niton XLt unit found that most metals at the site ...
    • Granite Creek Mine #7 abbreviated preliminary assessment 

      Wallowa-Whitman National Forest (Agency : U.S.) (2006-08)
      Assesses mine site consisting of a large collapsed adit and approximately 700cy of wasterock material adjacent to Granite Creek, with numerous trenches stemming from hydraulic mining and possible historic dredging operations. ...
    • Granite Creek Mines human health and ecological risk assessment 

      Wallowa-Whitman National Forest (Agency : U.S.); Cascade Earth Sciences (2006-04)
      Assesses, through a streamlined risk assessment process, potential human health and ecological risks associated with mining-related contamination at the Monumental, Cap Martin, Sheridan, Tillicum, and Central Mines ...
    • Granite Creek Mines site inspection 

      Wallowa-Whitman National Forest (Agency : U.S.); EA Engineering, Science, and Technology, Inc. (2004-01)
      Documents Site Inspection performed by EA Engineering at five Granite Creek Mines: Monumental, Cap Martin, Sheridan, Tillicum, and Central. The objectives were to access the immediate or potential threat posed by wastes ...
    • Granite Creek Tributary Mines initiation of CERCLA investigation memorandum 

      United States. Forest Service. Pacific Northwest Region (2007-02-20)
      Documents, pursuant to the guidelines of the National Oil and Hazardous Substance Contingency Plan (NCP), the decision to initiate a CERCLA investigation in nine locations at the Granite Creek Tributary Mines site. A Site ...
    • Granite Creek Tributary Mines initiation of CERCLA investigation memorandum 

      Wallowa-Whitman National Forest (Agency : U.S.) (2007-02-20)
      Documents, pursuant to the Guidelines of the National Oil and Hazardous Substance Contingency Plan (NCP), the decision to initiate a CERCLA investigation in nine locations at the Granite Creek Tributary Mines site. A Site ...
    • Pyx Mine and Mill abbreviated preliminary assessment 

      Wallowa-Whitman National Forest (Agency : U.S.) (2004-03)
      Assesses mine and mill site in moderate to steep side slopes, consisting of an open adit, waste rock dumps, tailings pond, and remains of a mill. A Niton XRF unit found numerous chemical elements exceeding regulations, ...
    • Rabbit Mine and Mill abbreviated preliminary asessment 

      Wallowa-Whitman National Forest (Agency : U.S.) (2004-03)
      Assesses mine and mill site on moderate to steep side slopes, with burned debris of the mill, open adit and an airshaft filled with water, with associated waste dumps. A Niton XRF unit found numerous chemical elements ...
    • Standard Mine abbreviated preliminary assessment 

      Wallowa-Whitman National Forest (Agency : U.S.) (2006-08)
      Assesses mine site on moderate side slopes, consisting of a large collapsed adit with minor seepage, approximately 500cy of wasterock near a small creek. A Niton XLt unit found that all metals exceeded screening criteria ...
    • Upper Central Mine abbreviated preliminary assessment 

      Wallowa-Whitman National Forest (Agency : U.S.) (2006-08)
      Assesses mine site on moderately steep side slopes consisting of four collapsed adits and about 1500cy of wasterock. A Niton XLt unit found most metals detected at the site exceeded screening criteria for birds, invertebrates, ...