Tenders are invited to furnish all necessary labor, supervision, tools, equipment, materials and appurtenances, including transportation, to perform roof replacement and rehabilitation at the Stickney Water Reclamation Plant (WRP), 6001 West Pershing Road, Cicero, IL 60804; the Calumet WRP, 400 East 130th Street, Chicago IL, 60628; the O'Brien WRP, 3500 W. Howard Street, Skokie, Illinois; the Wellington Pump Station, 3006 N. Clybourn Avenue, Chicago, Illinois; the Kirie WRP, 701 W. Oakton Street, Des Plaines, Illinois; the Hanover Park WRP, 1200 Sycamore Avenue, Hanover Park, Illinois, and at the Harlem Avenue Solids Management Area (HASMA), 7430 West Portage Trail, Forest View, IL 60402, over an approximate thirteen (13) month period, commencing upon approval of the Contractor’s Bond.