Air Piping Replacements, Gurnee WRF and Clavey Road WRF RFP

Description: The work generally consists of approx. of removing existing 30" and 18" odorous air piping above grade and in the tunnels of the Thickener Control Building, abandoning 30” odorous air piping below grade with flowable fill, and installing new above grade 24" and 30" stainless steel air mains and air main supports from (4) thickener tanks to the inlet of the existing odorous air fan. The work generally consists of abandoning existing underground 30" air main piping between the main building (Building 20) and Operating Gallery B (Building 150) with flowable fill, and replacing this air main with 30" stainless steel air piping mounted above grade with air main supports. Concrete and landscaping shall be restored at both sites as needed. Contract to include all start up, testing, and balancing of the new air piping.