GAI’s structural engineering group designed this acid mine drainage treatment plant to mitigate pollution from abandoned mine discharge and to provide additional capacity during periods of reduced stream flow. GAI’s designs for the plant include water containment structures; the plant control building; support framing for pipes and open troughs that convey water and chemicals throughout the plant; support framing for the plant’s elevated access platform; mat foundations for plant pumps; prefabricated storage tanks; and a silo.