All bids received after the scheduled time will be returned to the bidder unopened. Bidders shall have the option to submit a Single Prime Bid for all classifications of the work and/or separate bids for General Construction, Mechanical Construction, and Electrical Construction. Single Prime bids will be accepted but will not be awarded unless that bid is lower than the combined total of the lowest responsible prime bids. The procurement and contracting information including; Drawings, Technical Specifications, Addenda, and other contract documents as prepared by Craftwell Architects + Construction; Heyer Engineering, Structural Engineer; may be examined at the following places: The office of Craftwell Architects + Construction, Fargo, North Dakota Bids shall comply with North Dakota Century Code Chapter 48-01.1 as amended. Each bid submitted shall consist of two separate sealed envelopes one clearly marked "Bid Proposal" and the other clearly marked "Bid Bond" on the outside both with contractor's name. The two envelopes shall be attached to each other. The bid security must be in the sum equal to five percent (5%) of the full amount of the bid including any add alternates and must be in the form of a bidder's bond made payable to the Carrington Research Extension Center. A bidder's bond must be executed by the bidder as principal and surety, conditioned that if the principal's bid is accepted and the contract awarded to the principal, the principal, within ten days after notice of the award, shall execute a contract in accordance with the terms of the bid and the bid bond and any condition of the governing body. A countersignature of a bid bond is not required under this section. If a successful bidder does not execute a contract within the ten days allowed, the bidder's bond must be forfeited to the governing body and the project awarded to the next lowest responsible bidder. No bidder may withdraw this bid within 60 days after the actual date of the opening thereof. The bids of the three lowest Bidders for each contract will be retained until the contract has been awarded and executed, but no longer than sixty (60) days after the date of the Bid. All Bidders shall hold a valid North Dakota Contractor's license of the proper class for the full amount of the bid and shall enclose a copy of the license or Certificate of Renewal of the license with their bid. The Owner reserves the right to reject any and all bids and to waive any formalities therein and rebid the project until a satisfactory bid is received. The successful Bidder will be required at the time the contract is executed to provide Workers' Compensation Insurance Certificate, Certificate of Insurance, Company Safety Manual, and Waiver of Subrogation.