The Contractor shall provide all plant labor, materials, and supervision to remove, store and reinstall stored cryogenic perlite and refill cryogenic perlite from a U-50 tower/Cold Box. Material shall be stored onsite. After repairs are made, the Contractor shall reinstall with the removed cryogenic perlite and top off with new cryogenic perlite until tower is topped off with fresh cryogenic grade perlite to fill all voids in the oxygen generation system. The Contractor will be responsible for disposing any cryogenic perlite material if any. 3.4.1 The City has one column. Estimated volume is 4,200 cubic feet. 3.4.2 The City will provide access to the top of the cold box and access to filling the ports by means of ladders. The ladders are affixed to the cryo tower. 3.4.3 The City will provide roadways for the bulk vacuum tanker to enter and leave the job site under its own power.
