The Coal Pit Run system treats abandoned mine drainage near the headwaters of Coal Pit Run, a tributary to the South Branch Blacklick Creek. The system is located north of Expidite Road, to the east of the village of Twin Rocks, in Blacklick Township, Cambria County. Coal Pit actually consists of two systems, both built in 2005. The Lower Treatment System has been negatively impacted by some construction activities, which disrupted the flow into the system. However, the Upper Treatment System continues to effectively treat water and enhances the water quality of the headwaters area of Coal Pit Run. The Upper Treatment System consists of a collection pond, a vertical flow pond (containing crushed limestone and manure) and a settling pond. The Lower System was funded by the federal Office of Surface Mining (OSM) Watershed Cooperative Assistance Program. The Upper System was funded through an EPA Section 319 grant. Reports, maps, photos, and water sampling results for both systems have been posted on the Datashed website at www.datashed.org.