Now showing items 8-13 of 13

    • Monumental abbreviated preliminary assessment 

      Wallowa-Whitman National Forest (Agency : U.S.) (2003-02)
      Assesses mine and mill site, consisting of waste and tailings piles on flat to moderate side slopes and mill on steep slopes, with an opening in the ground surrounded by an unstable area. A Niton XRF unit found arsenic, ...
    • New York Mine abbreviated preliminary assessment 

      Wallowa-Whitman National Forest (Agency : U.S.) (2006-08)
      Assesses mine site consisting of numerous trenches on the mountain slope, at least five of which are collapsed to partially collapsed adits, 9000-12,000cy of wasterock and 4000cy of tailings. A Niton XLt unit found all ...
    • Ruth #1 Mine abbreviated preliminary assessment 

      Willamette National Forest (Agency : U.S.) (2004-10)
      After performing a preliminary assessment using a Niton XRF unit on waste rock dumps at the Ruth Mine, 8 miles northeast of Elkhorn, a site inspection was recommended because of the concentration of various elements, the ...
    • Ruth Mine initiation of CERCLA investigation memorandum 

      Willamette National Forest (Agency : U.S.); United States. Forest Service. Pacific Northwest Region (2005-02-23)
      Documents decision to initiate a CERCLA (Comprehensive Environmental Response Compensation and Liability Act) process after an abbreviated preliminary assessment found release of hazardous elements within the Ruth Mine #1 ...
    • Tillicum abbreviated preliminary assessment 

      Wallowa-Whitman National Forest (Agency : U.S.) (2003-02)
      Assesses mine site consisting of waste piles placed on moderate to steep side slopes. A Niton XRF unit found arsenic and lead exceeded EPA Region goals. Based on its proximity to Granite Creek, a Site Inspection is recommended.
    • 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, ...