2193_sejda-DYJ.pdf - Draft Environmental Impact Statement for the Safer Affordable Fuel-Efficient(SAFE Vehicles Rule for Model Year 2021–2026

2193_sejda-DYJ.pdf - Draft Environmental Impact Statement...

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Draft Environmental Impact Statement for the Safer Affordable Fuel-Efficient (SAFE) Vehicles Rule for Model Year 2021 2026 Passenger Cars and Light Trucks 9-1 CHAPTER 9 MITIGATION CEQ regulations implementing NEPA require that the discussion of alternatives in an EIS “[ i]nclude appropriate mitigation measures not already included in the proposed action or alternatives. 1 An EIS should discuss the “[m]eans to mitigate adverse environmental impacts . 2 As defined in the CEQ regulations, mitigation includes the following actions: 3 Avoiding the impact altogether by not taking a certain action or parts of an action. Minimizing impacts by limiting the degree or magnitude of the action and its implementation. Rectifying the impact by repairing, rehabilitating, or restoring the affected environment. Reducing or eliminating the impact over time by preservation and maintenance operations during the life of the action. Compensating for the impact by replacing or providing substitute resources or environments. Under NEPA, an agency does not have to formulate and adopt a complete mitigation plan 4 but should analyze and consider all reasonable measures that could be adopted. This chapter provides an overview of the impacts associated with the Proposed Action and alternatives (Section 9.1, Overview of Impacts ) and then discusses potential mitigation measures that would reduce those impacts (Section 9.2. Mitigation Measures ). The chapter also addresses those impacts that would remain after mitigation (Section 9.3, Unavoidable Adverse Impacts ), short-term commitments of resources and implications for long-term productivity (Section 9.4, Short-Term Uses and Long-Term Productivity ), and commitments of resources to comply with the standards (Section 9.5, Irreversible and Irretrievable Commitments of Resources ). 9.1 Overview of Impacts Compared to the No Action Alternative, the Proposed Action and alternatives would increase fuel consumption and greenhouse gas (GHG) emissions. As seen in Chapter 5, Greenhouse Gas Emissions and Climate Change , the Proposed Action and alternatives would marginally increase the impacts of climate change that would otherwise occur under the No Action Alternative. As reported in Chapter 4, Air Quality , aggregate emissions of most criteria air pollutants (with the exception of carbon monoxide) are generally anticipated to increase while aggregate emissions of most hazardous air pollutants (with the exception of diesel particulate matter) are generally expected to decrease under the Proposed Action and alternatives as compared to the No Action Alternative. Compared to the No Action Alternative, health effects are estimated to increase under the Proposed Action and alternatives for all analysis years (Chapter 4, Air Quality ). Nationally, for those pollutant emissions projected to increase under the Proposed Action and alternatives, there would be a slight decrease in the rate of reduction otherwise
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  • Fall '19
  • Emission standard, Proposed Action

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