Submersible non-clog sewage pumps, wet well, sewer and force main connection at Lift Station 3 including pumps, level control system, guide rails, chains, concrete cover, hatch, level control system, valves, piping, fittings, sewer connections, control panels, wiring, autodialer, electrical work, testing, restoration and appurtenances. Furnish and install preloader tank at Comfort Station D including excavation, backfill, sheeting and shoring, sewer connections, testing, restoration and appurtenances. Reconstruct sidewalk at Comfort Station D to remove manhole cover including concrete, base course, backfill and all incidentals. Sealing of Wet Well joint and auto-dialer at Lift Station 2 including root removal, pressure washing, sealant taping, applying waterproof band, wiring, electrical work, autodialer, testing, and all incidentals. Allowance for relocation of unforeseen existing utilities and additional archaeological work as approved by the Officer-in-Charge. Any unused portion of this Allowance shall remain with the City and County of Honolulu.