A written description of the scope or program of the project shall be prepared by the head of the state agency for which the project is proposed and submitted to the negotiating committee. The negotiating committee may approve the description as submitted or may revise and amend or reject all or any part of such description. The description in the form approved by the negotiating committee shall be used in the negotiations between the committee and qualified firms. Such description shall be the basis for the project development and the project description shall not be altered therefrom without the prior approval of the negotiating committee.