Furnish all labor, materials, and equipment necessary to: 1. Demolish and dispose of the existing Digesters 3 and 4 roof covers and related appurtenances, except for the pressure/vacuum relief valve assemblies, which are to be removed and returned to Owner for salvage. 2. Temporarily remove and pull back all existing electrical, mechanical and instrumentation to allow full demolition and installation of new digester roof covers. All conduit that is to be removed will be replaced with new conduit. 3. Remove and return two Mixer Control Panel assemblies on Digester 4 to Owner for salvage. 4. Provide new digester covers and appurtenances on Digesters 3 and 4 in accordance with the Specifications and approved Submittals. 5. Install conduit and all previously removed electrical, mechanical and instrumentation equipment. 6. Provide sidewall hatches with access doors and pipe penetrations where shown at the lower level of both Digesters 3 and 4. 7. Provide stairs from the roof of Digester 3 down to the roof of the adjacent building.
