Butler County Air Permits

Title V Operating Permits

AK Steel-Butler Works, Butler Township

Alcoa Commercial Windows (Kawneer Traco), Cranberry Township

Armstrong Cement and Supply, Winfield Township

BNZ Materials, Zelienople Borough 

Calumet Penreco, Karns City Borough

MarkWest Liberty-Bluestone LLC, Jackson Township

Mercer Lime-Branchton Plant, Slippery Rock Township

Seneca Landfill, Jackson Township

Slippery Rock University, Slippery Rock Borough

Sonneborn-Petrolia Plant, Petrolia Borough

Waste Management-Northwest Sanitary Landfill, Clay Township