The County of Loudoun, Virginia (County or “Owner”) seeks to award one (1) or more, with a maximum of three (3), Job Order Contracts (JOC or Contract) to qualified contractors to provide for the County wide Mechanical Infrastructure Maintenance Work on an as-needed basis at various Loudoun County facilities over a one (1) year Base Term and up to two (2) one (1) year additional Option Terms. A JOC is a competitively bid, firm fixed priced, indefinite quantity contract. The Work includes a collection of Tasks and related specifications that have pre-established unit prices. The JOCs resulting from this Request for Proposal (RFP) are to be used for the accomplishment of repair, alteration, maintenance, rehabilitation, demolition and installation of mechanical systems by means of individual Job Orders issued under the JOCs and related to discrete, identified Projects.