Project Description:

Smith Gardner, Inc. (S+G) partnered with Crowder Construction to head the multi-disciplinary engineering team for this project. S+G provided Civil Design services and integrated the deliverables from geotechnical, electrical and surveying subconsultants into a design-build construction document package. The project, which tied-in to an existing landfill gas extraction system, consists of four main components: 1) a gas treatment and pressurization facility; 2) an on-site gas transmission pipeline; 3) an electrical generation facility; and 4) an electrical distribution line and utility interconnection. Prior to combustion, the landfill gas is desulfured, chilled, dehydrated, and pressurized. Sulfur removal is accomplished using a biological process (Bio-Gas Clean) whose only inputs are water and landfill gas. The electrical generation facility currently includes two Jenbacher internal combustion engine gensets with a combined capacity of 2.8 MW, with provisions for a third genset to be added as the landfill is expanded. The project included installation of a five-mile long electrical distribution line to connect the facility to the power grid.