(1) The department reserves the right to require or to permit proposers to submit, at any time, revisions, clarifications to, or supplements of their previously submitted proposals. The department may, in the exercise of this authority, require proposers to add features, concepts, elements, information or explanations that were not included in their initial proposals, and may require them to delete features, concepts, elements, information or explanations that were included in their initial proposals. A proposer will not be legally bound to accept a request to add to or delete from a proposal any feature, concept, element or information, but its refusal to do so in response to a request by the department shall constitute sufficient grounds for the department to elect to terminate consideration of its proposal.

(2) After the department's opening and review of proposals, the department may issue or electronically post an addendum to the request for proposals that:

(a) Requires proposers to address or add physical features or elements, and information or explanations that were not included in their initial proposals; or

(b) Requires proposers to delete physical features or elements that were included in their initial proposals; or

(c) Change the method by which the department will send any such addendum that it issues by a method other than electronic posting to all proposers to continue in the proposal process; or

(d) Any addendum issued will contain a deadline by which the proposers must submit to the department any additions to, modifications of or deletions from their proposals.