The vendor portal consolidates vendor registration for suppliers, contractors, subcontractors, consultants, manufacturers, distributors, and dealers. Learn how the County buys products and services.Search contracts, find open solicitations on BuyNet. How to fill out the Vendor Agreement for Services and Compliance? All new Contractors, Suppliers, and Vendors are required to complete and return the forms listed below and attach the requested documentation. The Department of Environmental Health and Quality provides the following forms and applications as a reference and service to its customers. Find vendor agreement lawyers for San Diego, CA to hire. No cost to post a project to get multiple bids in hours to compare before hiring. You can also contact the Procurement Services Department at 619.686. Vendor Disclosure Statement (DS1891) - Review the Department of Developmental Services information about the DS1891 form requirement.