Restoration: Contractors inspect Boston Mine erosion control project near Durango

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From The Durango Herald (Dale Rodebaugh):

State Division of Reclamation, Mining and Safety officials on Thursday visited the site north of Twin Buttes off U.S. Highway 160 with seven potential bidders interested in restoring and revegetating 5 acres of steep hillside. The target is the Boston Mine, also known as Perin’s Peak No. 1, which operated from 1901 to 1926. The site produced more than 1 million tons of coal and left behind about 4,000 cubic yards of coal waste…

The mine is within the Perins Peak Wildlife Area, which comprises 12,000 acres of Colorado Parks and Wildlife and Bureau of Land Management holdings. The area is closed to the public Nov. 15 to July 15 as a winter haven for deer, elk, turkeys and snoozing black bears and in the spring for nesting peregrine falcons. The western half opens April 1 because no peregrines nest there…

Efforts to clean up the Boston Mine site, which at one time leaked 20 gallons a minute of toxic iron, copper, manganese and zinc into Lightner Creek, aren’t new. In 1992, grants from the Office of Surface Mining and the Bureau of Mines funded construction of wetland retention ponds to treat seepage and to assess the effectiveness of certain work.

“We stopped the leaks with the wetlands and by closing a collapsed spot that was allowing water to fill the mine workings and create seepage elsewhere,” Brown said. No seepage is seen today, she said.

The restoration will include closing a shaft, contouring a hillside, redirecting a ditch to carry runoff to one of the old retention ponds and seeding, mulching and applying 8 inches of compost and biochar – woody material reduced to charcoal through anaerobic processing – that retains a lot of water.

More restoration/reclamation coverage here.

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