; 64 Fed. Reg. 48701, 49844)). (2) Exception If the Administrator determines that standards required by paragraph (1) are not technologically or economically feasible, the Administrator shall promulgate standards that achieve the maximum reduction of the emissions described in that paragraph from the vessels described in that paragraph that is technologically and economically feasible. (3) Considerations In determining technological and economic feasibility under paragraph (2), the Administrator shall take into account the net reduction of emissions of greenhouse gases, the net reduction of emissions of air pollutants for which air quality criteria have been issued under section 108, and potential adverse impacts on public health, safety, and the environment, including with respect to air quality, water quality, and the generation and disposal of solid waste. .