The City is continually seeking vendors, suppliers, and contractors who can provide quality products and services at competitive prices. Do Complete and attach any certificates or forms requested in the solicitation.We have various projects in several departments that we contract out and want to inform vendors for potential bid opportunities. Online. Online. AHA utilizes the Bonfire e-procurement platform to host all competitive solicitations. Alameda County, CA is offering 120 parcels for auction online. Alameda County, CA is re-offering 15 parcels for auction online. To respond to open opportunities, please register as a vendor at our Procurement Portal.