1. Any agreement or collusion among responding offerors or prospective responding offerors in restraint of freedom of competition by agreement to respond with a fixed price, or otherwise, shall render the responses of such responding offerors void.
2. Advance disclosures of proprietary information or any other information to any particular responding offeror which would give that particular responding offeror any advantage over any other interested responding offeror in advance of the opening of responses, whether in response to advertising or an informal solicitation, made or permitted by a member of the governing body or an employee or representative thereof, shall operate to void all responses received in response to that particular solicitation.