Below are links to Competition Impracticable and Sole Sources under consideration by Maricopa County. The County reserves the right to reject any and all bids/proposals, and to waive any informality in any bid/proposal. Invitations for bid will be awarded to the lowest responsible/responsive bidder meeting specifications. Requests for proposals will be awarded to the most responsive/responsible bidder, whose proposal has been deemed most advantageous in accordance with the evaluation criteria contained in the RFP.