The City of Boston/County of Suffolk (the County), acting by its Fire Commissioner (the Official), invites competent persons, firms or corporations to apply for prequalification on a bidders list and thereafter enter into a contract or contracts, as may be requested from time to time by the Official, for the performance of the particular items of work when and as may be required by the Official during the period of July 1, 2009, through June 30, 2010.