Description: The C&K Glasgow treatment system was constructed by C&K Coal Co in 1998 to treat highly acid and metal-rich water emerging from the toe of a large area of surface mining adjacent to Muddy Run just east of PA 253. The original system contained both a passive system to treat most of the water most of the time and a NaOH system was also in place for higher flow periods. The passive system consisted of two vertical flow ponds (VFP’s or SAPS), about 1800 ft of wetland channels, a limestone bed for Mn removal and 3 ponds. The active system utilized portions of these components. In 2004, C&K Coal Co. declared bankruptcy and ceased maintenance and treatment at the site. Volunteers from the Clearfield Creek Watershed Association inspected the system and have been flushing the two VFP’s monthly since 2005 in an attempt to continue the treatment capability of the system. In 2008, a grant for $174,000 from the Remining Incentive Program was awarded to the Clearfield Creek Watershed Association for renovation of the passive system. During the renovation, the passive and active systems were separated.