Partner Links The following are links to some of HACIA’s partner institutions: Please note that these links will take you outside the HACIA website. City of Chicago City of Chicago Chicago Park District Chicago Public Schools Chicago Transit Authority City Colleges of Chicago Metropolitan Pier and Exposition Authority Chicago Housing Authority Public Building Commission Metropolitan Water Reclamation District of Greater Chicago O'Hare Modernization Program State of Illinois Central Management Services Illinois Department of Transportation Capital Development Board Illinois Higher Education Procurement Bulletin Regional Metra Cook County Pace