(a) Environmental impact evaluations need not be prepared for projects for which environmental statements have previously been prepared pursuant to other state or federal laws or regulations, provided all such statements shall be considered and reviewed as if they were prepared under sections 22a-1a to 22a-1f, inclusive.

(b) Environmental impact evaluations shall not be required for the extension of the project otherwise known as the Connecticut River Interceptor Sewer Project, or a project, as defined in subdivision (16) of § 10a-109c, which involves the conversion of an existing structure for educational rather than office or commercial use.

(c) A constituent unit of the state system of higher education may provide for environmental impact evaluations for any priority higher education facility project, as defined in § 4b-55, or for any higher education project involving an expenditure of not more than two million dollars, by (1) reviewing and filing the evaluation for such project with the Office of Policy and Management for its review pursuant to § 22a-1e, or (2) including such project in a cumulative environmental impact evaluation approved by the Office of Policy and Management.

(d) Notwithstanding § 22a-1b, any environmental impact evaluation completed for proposed improvements for the Rentschler Field Development shall be deemed to include any industrial reinvestment project, as defined in subdivision (8) of subsection (a) of § 32-4m, including, but not limited to, any such planned or proposed project, any segment of such project and any state-certified industrial reinvestment project, as defined in subdivision (12) of subsection (a) of § 32-4m.

(e) Environmental impact evaluations shall not be required for actions in furtherance of the implementation of any approved program, as defined in 15 C.F.R. part 700, for the construction of nuclear submarines if such approved program has been given the priority rating of DX in accordance with said part on or before the effective date of this section under the United States Department of Defense Defense Priorities and Allocations System.