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Guidance for the Use of Latest Planning Assumptions in Transportation Conformity Determinations. Revision to January 18, 2001 Guidance Memorandum.
| 题名： | Guidance for the Use of Latest Planning Assumptions in Transportation Conformity Determinations. Revision to January 18, 2001 Guidance Memorandum. |
| 关键词： | environmental protection,air quality standards,transportation planning,conformity;clean air act, air pollution control, regulations, public health, state agencies, local agencies, employment, population, vehicle registartion, long range planning, implemen |
| 摘要： | The Clean Air Act requires that transportation investments be based on the most recent information that is available in order to protect public health over the long-term. As such, conformity determinations must be based upon the most recent planning assumptions in force at the time the conformity analysis begins (40 CFR 93.110(a)). The Environmental Protection Agency (EPA) and Department of Transportation (DOT) encourage state and local agencies to review and update their planning assumptions regularly. Areas are strongly encouraged to review and update planning assumptions at least every five years, especially population, employment, and vehicle registration assumptions. Areas with network-based travel models should review their assumptions and data used in model validation through the consultation process, and newer assumptions and data must be used whenever available. Conformity determinations that are based on assumptions that are older than five years should include written justification for not reviewing and updating assumptions at least every five years. / Supplementary Notes: Prepared in cooperation with Federal Highway Administration, Washington, DC. Office Natural and Human Environment. and Federal Transit Administration, Washington, DC. Office of Planning. / Availability Note: Product reproduced from digital image. Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5301 Shawnee Road, Alexandria, VA, 22312, USA. / NTIS Prices: PC A03/MF A03 / NTIS In-house Control Codes: epa/dotfha/dotfta;12111,1101 |
| 报告类型： | 科技报告 |
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