摘要: |
This Final Regulatory Support Document provides economic, technical, cost, and environmental analyses of the new permeation evaporative and exhaust emission standards for highway motorcycles. The anticipated emission reductions will translate into meaningful, long term improvements in air quality in many areas of the U.S. Overall, the new requirements will reduce individual exposure to dangerous pollutants and provide much needed assistance to states and regions facing ozone and particulate air quality problems that are causing a range of adverse health effects, especially in terms of respiratory impairment and related illnesses. Chapter 1 reviews information related to the health and welfare effects of the pollutants of concern. Chapter 2 contains an overview of the affected manufacturers, including some description of the range of vehicles/engines involved and their place in the market. Chapter 3 covers a broad description of engine and permeation evaporative emission control technologies, including a wide variety of approaches to reducing emissions. Chapter 4 summarizes the available information specifically providing a technical justification for the feasibility of the standards. Chapter 5 applies cost estimates to the projected technologies. Chapter 6 presents the calculated contribution of these sources to the nationwide emission inventories with and without the new standards. Chapter 7 compares the costs and the emission reductions for an estimate of the cost-effectiveness of the rulemaking. Chapter 8 presents our Small Business Flexibility Analysis, which evaluates the impact of the rule on small businesses. Market Overview This regulation is designed to achieve emission reductions from highway motorcycles. |