Chicago · permit 101061728

151 E WACKER DR

THE SCOPE OF WORK INCLUDES THE REMOVAL OF ONE (1) GENERATOR AND THREE (3) AUTOMATIC TRANSFER SWITCHES AND THE MECHANICAL SYSTEMS FOR THE SUPPLY AND EXHAUST SYSTEMS. EXISTING FUEL SYSTEMS AND ACCESSORIES WILL BE REUSED TO THE FULLEST EXTENT POSSIBLE. THE GENERATOR IS LOCATED ON THE LOWER LEVEL (EXHIBIT LEVEL) OF THE EAST TOWER, WHILE THE AUTOMATIC TRANSFER SWITCHES ARE LOCATED ON THE EXHIBIT LEVEL ELECTRICAL ROOMS AS WELL AS THE PENTHOUSE ROOMS. A NEW ELECTRICAL CLOSET ON THE EAST TOWER EXHIBIT LEVEL WILL BE CONSTRUCTED TO HOUSE ATS-4 IN ORDER TO MAINTAIN 2-HOUR SEPARATION FROM THE MAIN SWITCHBOARD. FAN REMOVAL AND DUCTWORK MODIFICATIONS WILL BE REQUIRED IN THE EAST TOWER GENERATOR ROOM AND THE ADJACENT STORAGE ROOM. NEW INTAKE AND EXHAUST LOUVERS WILL BE REQUIRED. A NEW ACCESS DOOR WILL BE REQUIRED TO ACCOMMODATE NEW DUCTWORK. THE WEST TOWER GENERATOR WILL BE REPLACED PRIOR TO THE EAST TOWER GENERATOR (UNDER A SEPARATE PERMIT) ALL DOWNTIME AND CUTOVERS SHALL OCCUR AFTER HOURS AT A TIM