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 125th Street Pumping Station, 12501 S. Michigan Avenue, Chicago IL, 60628, the Calumet Solids Management Area (CALSMA) East Scale House, 12600 S. Doty Avenue, Chicago, IL 60628, Sidestream Elevated Pool Aeration Station 1 (SEPA 1), 12354 S. Torrence Ave, Chicago IL, 60633, the O'Brien WRP, 3500 W. Howard Street, Skokie, Illinois and the Kirie WRP, 701 W. Oakton Street, Des Plaines, Illinois, over a twenty-four (24) month period, commencing upon approval of the Contractor’s Bond. Group A- Stickney WRP; Group B - Calumet WRP & Service Area; Group C - North Service Area (NSA)