1. Presented to: By: Date: Federal Aviation Administration CHANGING NOISE CONTOURS AN FAA PERSPECTIVE NOISE MITIGATION SYMPOSIUM JOHN SILVA OCTOBER 2, 2006

2. Federal Aviation Administration 2 KEEPING NOISE CONTOURS UP TO DATE When you need to do it. When it may not be a good idea. Informing the community.

3. Federal Aviation Administration 3 ADJUSTING THE DNL CONTOUR “equity in the neighborhood” (ref. FAA Order 5100.38B) consistent approach among airports street lines vs. neighborhood/subdivision lines

4. Federal Aviation Administration 4 NEW CONSTRUCTION ELIGIBILITY ISSUES 1998 Policy on New Construction Within 65 DNL of Noise Exposure Map How is Policy Applied to Changes in Contours?

5. Federal Aviation Administration 5 ISSUES WITH GROWING CONTOURS Acquisition vs. sound insulation At a rapidly growing airport, lean your program toward the future Consider return on investment