When an invitation to bid is issued, your firm would be contacted electronically. Prospective vendors are also welcome to visit our procurement department.Sealed DesignBuild bids shall be received at the offices of the Montgomery County Auditor,. Learn about current bid and contract opportunities available to consultants, service providers, contractors, vendors, or suppliers. The Port Authority's general policy is to solicit competitive bids for construction work. Generally, upon receipt, all bids are publicly opened and read. Construction Contract and Related Documents. Complete and submit Construction Manager as Constructor Compensation Proposal (Attachment G) hereinafter referred to as the "Cost Proposal".