Proposal and Bid Items. Attachment 6: Payee Data.Vendors should submit written proposals in the manner described in the specific documents for open requests posted on this page, below. Please select from the links below to view both current and past bid opportunities. Current Bid Opportunities. You can browse open solicitations on our bid management system, Periscope. The County of Santa Clara (County) is seeking proposals from qualified vendors to provide a. Every blank on the enclosed Bid Proposal form should be filled out completely (or provided in another format). In addition, proposer must submit with their proposal any additional terms and conditions that they propose to have included in the contract.