The Commissioner of Developmental Services shall adopt regulations, in accordance with chapter 54, to establish and implement the policy of the Department of Developmental Services with respect to the placement and care of individuals who are evaluated by the department as posing a serious threat to others without specific measures for their supervision and security. Such regulations shall include, but not be limited to, provisions concerning the criteria or factors to be considered in: (1) Evaluating and placing such individuals; (2) siting of residential facilities for such individuals; (3) giving notice, if any, to the communities in which such individuals are to be placed; (4) determining appropriate levels of security and supervision; and (5) providing appropriate programs and quality of life for such individuals in the least restrictive environment. Such regulations shall not permit the siting of more than one such facility in any one municipality.