Specifications include, but are not limited to: Upgrade of Final Settling Tanks (FSTs) 3801 through 3832, including the following: a. Draining and cleaning of each FST, including each FST influent channel and return activated sludge channel. b. Demolition and removal of the existing sludge collection mechanisms, including flights, chains, shafts, sprockets, rails, and supports. c. Demolition and removal of the existing scum dipping troughs and manual operators. d. Demolition and removal of the existing influent slide gates and floor stand operators. e. Demolition and removal of the existing effluent weir plates. f. Demolition and removal of the existing target baffles. g. Demolition and removal of the existing tank drain (dump) valves and related piping.