From the AP and KATU News,
RE: Restoration of an old mining site in the Applegate River Watershed.
"...the goal this year is to "weatherize" the operation before winter weather begins ... Rock catch basins have been built immediately downhill from where mining debris once lay... Those have rip-rap, then high density polyethylene liner and a couple feet of limestone ... We've drilled holes into the liner. As the water sits in the basin, it will percolate through and get the acid neutralized by the limestone. Each basin is intended to catch the sediment while neutralizing the water ... Original plans had called for a clay liner to be placed under the repository as well as on top, but it was decided the tough plastic liner would do a better job of enveloping the toxic material ... Slash is being used to provide erosion control in many areas. However, native grass seed has been broadcast in areas where soil remains. They also plan to plant some 15,000 young, native trees and shrubs at the old Blue Ledge Mine. "
Check out the entire article here http://www.katu.com/news/local/105523478.html
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