The pump shall be a Model CD500M, size 24" x 18" as manufactured by GODWIN PUMPS OF AMERICA, INC., Bridgeport, New Jersey. 2.2 EQUIPMENT 2.2.1 CASING, SUCTION COVER, AND SEPARATION TANK: Pump castings shall be cast iron. Pump design shall incorporate a direct suction flow path that is in axial alignment with the impeller eye. There shall be no turns, chambers, or valves between the suction flange and the impeller eye. 2.2.2 SOUND ATTENUATED ENCLOSURE: The engine and pump shall be completely enclosed with fourteen-gauge sheet metal panels backed with one inch and two-inch layers of polydamp acoustical sound-deadening material. The acoustical enclosure shall reduce pump and engine noise to sixty-eight dBA or less at a distance of thirty feet.
