Invitation for BID(IFB)This acquisition is being conducted under the Two Step Sealed Bidding procedures of Revolution FAR Overhaul (RFO) Part 14. Step One consists of the submission, evaluation, and acceptance of technical proposals without pricing. Step Two consists of the issuance of an Invitation for Bids (IFB) to only those Offerors whose Step One technical proposals are determined acceptable.The Army Contracting Command ? Aberdeen Proving Ground (ACC APG), on behalf of the Directorate of Public Works (DPW), seeks Contractor support for the Unidirectional Hydrant Flushing and Repair Program at:? APG South (Edgewood)? Adelphi Laboratory CenterThe Contractor shall perform all tasks necessary to execute APG?s unidirectional flushing program and produce all associated documentation and data deliverables.Award is contingent upon the availability of appropriated funds. The Government reserves the right to cancel this requirement at any time without obligation or liability for proposal preparation costs.The primary North American Industry Classification System (NAICS) Code of this Solicitation is 237110? Water and Sanitary Line and Related Structures Constructions Power and Communication Line and Related Structures Construction (small business size standard of $45million (M)).