N.H. Rev. Stat. § 33:5-c
Any such municipality which has voted to incur debt under the provisions of RSA 33:5-b shall submit a certified copy of the record of such action together with detailed plans of the proposed construction to the department of environmental services for review and approval, as hereinafter provided. After a review of the plans and such other independent investigation as is deemed necessary, if the department of environmental services determines that the proposed project is in the public interest, due consideration being given to the cost of said project in relation to the benefits which will accrue to public health or water pollution control, it shall furnish a report of its findings and recommendations including a recommendation concerning a state guarantee as provided for under RSA 485-A:7 to the governor and council for their approval.
RSA 33:5-c
1957, 213:1. 1965, 26:1. 1986, 202:6, I(a). 1989, 339:12, eff. Jan. 1, 1990. 1996, 228:108, eff. July 1, 1996.