Nassau County Procurement and Contracts Management Department (PCM) functions as the central hub for purchasing and contracts management activities. Its procurement and contract administration processes.The procurement procedures are outlined in several comprehensive manuals including the. Procurement Policy and Procedures manual, the Procurement Internal. Nassau County's Procurement Department prepares and solicits bids for RFPs (Request for Proposals) and RFQs (Request for Qualifications). By signing in or creating an account, some fields will auto-populate with your information. One of the best methods for ensuring that goods and services are acquired in a cost effective manner is to create as much competition as possible. The Purchasing Department is responsible for overseeing bids, requests for proposals and vendor contracts. The role of the contract management Procurement Department is to serve as the central location of thefor purchasing and contract management activities. Contract management is an essential part of the procurement process.