C. Each bid shall be submitted on the proposal form attached, in a sealed envelope. (1) Addressed to the Purchasing Agent.C. Each proposal shall be submitted on the proposal form attached, in a sealed envelope. Gov, which is also noted in the solicitation. Any bidder may withdraw his bid at any time before the time set for receipt of bids. The submission shall be accompanied by: (1) NonCollusion Affidavit, (2) Disclosure of Ownership. Bids shall be made upon the Standard Proposal Form. Any bid guarantee required will be so specified in the bid documents for that item. Any proposal may be withdrawn up until the date and time set above for opening of the proposals. The bid proposal is to be returned in the pre-addressed envelope and will be accepted no later than p.m.