The West Sopris Soil Refuse Project tackled seven acres of coal waste by the lake.
rehabilitated the abandoned West Sopris Mine
At the conference, Nickless discussed how the Colorado team transformed what was seven acres of coal refuse into soil that can support vegetation. The project also stabilized the refuse, preventing contaminating sediment from draining into Trinidad Lake. Rather than take on the cost of bringing in topsoil, scientists helped find a way to change the acidity of the coal waste to allow for vegetation to grow. “We took that recipe that the lab I came up with and we created this cocktail, if you will, of amendments to add to the coal base,” Nickless explains.
The total project cost $980,000. Nickless shared information on the soil transformation technique at the National Association of Abandoned Mine Land Program conference, in hopes that it could help with similar struggles in other states as well as Colorado.
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