The following specifications are minimum acceptable requirements. Bid specifications may not be revised without an official written addendum issued by Purchasing. Material shall conform to the State of Wisconsin Specification Section 455. Certified analysis of materials will be at supplier's expense if and when Portage County requires testing. The Highway Department will have the right to procure samples of material at destination point. Failure of materials to comply with State specifications and/or Highway Department requirements shall result in rejection. There will be no demurrage charges paid by the Highway Department. Late delivery of materials may cause forfeiture of the remaining season's contract. Upon award of the contract separate performance and payment bonds, each in the amount of one hundred (100) percent of the project price (including materials and labor), with a corporate surety approved by the owner will be required of the bidder for the faithful performance of the contract. This guarantee shall remain in effect until acceptance of the work by the owner...