Section sixty-one of chapter thirty requires all agencies to review, evaluate, and determine the impact on the natural environment of all works, projects, or activities conducted by the agencies and use all practicable means and measures to minimize damage to the environment. Section sixty-two defines “agency” to mean “an agency, department, board, commission or authority of the commonwealth, and any authority of any political subdivision which is specifically created as an authority under special or general law.” Any determination made by an agency must include a finding describing the environmental impact, if any, of the project and a finding that all feasible measures have been taken to avoid or minimize said impact. Such environmental impact report must be submitted to the secretary of environmental affairs, who will review the report according to section sixty-two c of this chapter.