Nassau County Procurement and Contracts Management Department (PCM) functions as the central hub for purchasing and contracts management activities. The applicable DCM target deadline for filing of the note of issue is 12 months in the former and 15 months in the latter.This webpage provides important information for those seeking to separate employment from the Nassau County School District. CDM will use available digital topography from Nassau County to identify, delineate, and refine up to. 110 hydrologic units. Welcome to the Online Vendor Bid Site for suppliers and bidders interested in bidding opportunities for the commodities services and technology contracts. Please ensure it is filled out completely, signed and notarized. (13) Signatures: Please ensure the application is filled out completely. Fill out every single page wherever there is a place to do so. Prevailing wage applies to all employees of the bidder.