Nassau County Procurement and Contracts Management Department (PCM) functions as the central hub for purchasing and contracts management activities. Note that for Bid Contracts, in order to submit a bid, you must purchase a bid package from the Department of Public Works Permit Office directly.IMPORTANT Please be aware that all bids are governed under the State Finance Law Sections 139j and 139k (collectively,. Request for Proposal (RFQ) for Engineering Services. The City of Nassau Bay is seeking to obtain an engineering services contract with a licensed engineering.