(a) Chapels. The commissioner may permit any religious or missionary corporation or society or combination of such corporations and societies to erect a building on the grounds of any facility in the office for the holding of religious service, to be used exclusively for the benefit of the patients and employees of such facility, subject to such conditions as may be imposed by the commissioner.

(b) Fire mutual aid. In cooperation with the development and operation of plans for mutual aid in cases of fire and other public emergencies, the director of a facility in the office for people with developmental disabilities, with the approval of the commissioner, may authorize the fire department of the facility to furnish aid to such territory surrounding the facility as may be practical in cases of fire and such emergencies, having due regard to the safety of the patients and property of the facility and to engage in practice and training programs in connection with the development and operation of such mutual aid plans.

(c) Community stores. The commissioner may authorize the director of any facility under his jurisdiction to operate a community store or to lease space in any of its buildings not inconsistent with the requirements of the facility for the operation of a community store for the use and benefit of the patients, visitors, and personnel of such facility. The moneys received by the director of such facility under or pursuant to any such operation shall be deposited in a special fund to be known as the community store fund and shall be used for the general purposes of the facility, subject to the provisions of section fifty-three of the state finance law.

(d) Laboratory services. Subject to the commissioner's regulations, the director may agree to make the laboratory service of a facility in the office for people with developmental disabilities available to adjacent local governments and may receive, apply, and spend money for the extension of laboratory service according to the terms of the agreement as approved by the commissioner.