Compilation of Noise Programs in Areas Outside DNL 65 (2009)

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5This report presents the results of ACRP Project S02-03, Com- pilation of Noise Programs in Areas Outside DNL 65. This introductory chapter describes the purpose of the report, pre- sents the methodology used to develop the report, and outlines the organization of the report. PURPOSE OF REPORT There has been widespread industry discussion on programs to address land use compatibility outside the annual average 65 Day–Night Average Sound Level (DNL) contour. This ACRP synthesis project grew out of such industry discussion, and the need to understand the issue of noise outside DNL 65. The focus of this synthesis is a compilation of noise programs in areas outside DNL 65. Its goal is to compile in one location current federal law and policy and how it is applied regionally, and to provide the state of the practice of noise program mea- sures targeted outside DNL 65 at airports. The discussion of noise program measures outside DNL 65 is not limited to mit- igation measures such as sound insulation, but includes the entire range of strategies to address aircraft noise issues, includ- ing noise abatement procedures, ground noise policies, land use compatibility planning, and community and operator outreach. REPORT STRUCTURE The rest of this document presents the following: Chapter two—Regulations, Policies, and Court Cases Gov- erning Issues of Noise Outside DNL 65—A compilation of existing policies and regulations, plus relevant court decisions (published and as-available). Chapter three—Survey of Airports Regarding Noise Out- side DNL 65—A summary of the survey conducted for this synthesis, including survey methodology, and an overview of results. Chapter four—Operational Procedures—Information on the development and implementation of noise abatement procedures designed specifically to address noise issues out- side of DNL 65. Chapter five—Land Use and Sound Insulation Policies— A summary of information on land use policies that prevent or remediate incompatibilities outside of DNL 65. Chapter six—Communication and Outreach—A sum- mary of information on the communication and outreach techniques airports use to address noise outside DNL 65. Chapter seven—Case Studies—Two case studies of air- ports that have addressed noise outside DNL 65. Chapter eight—Conclusions—A summary of the infor- mation collected for this synthesis and a discussion of future research needs. The four appendixes include a copy of the synthesis sur- vey (Appendix A), the survey results (Appendix B), and two case studies (Dallas/Ft. Worth International Airport, Appendix C, and Naples Municipal Airport, Appendix D). References, including reports, websites, and data sources used in prepar- ing the synthesis report, and a glossary of terms, abbrevia- tions, and acronyms are also included. CHAPTER ONE INTRODUCTION