Nassau County Procurement and Contracts Management Department (PCM) functions as the central hub for purchasing and contracts management activities. Use this form if you are a new vendor at Nassau Community College.Please complete the new vendor form, qualification statement and upload a W-9 form. BusinessFriendly Nassau County. • Recognizes and values partnerships with vendor community. Please note that the below list is for informational purposes only. To access a bid please go to Vendor Portal and click the "Nassau County Procurement". The Vendor Claims Division of the Nassau County Comptroller's Office is responsible for the review of County agreements and claims for payment. Services Clause: A services provision outlining the goals, expectations and services to be rendered should be included in a vendor contract. Be paid for all Medical Examiner services performed up to the date of the notice of termination. 3.