Presented to: By: Date: Federal Aviation Administration Airport Noise Basics Noise Analysis Overview...
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Transcript of Presented to: By: Date: Federal Aviation Administration Airport Noise Basics Noise Analysis Overview...
Presented to:
By:
Date:
Federal AviationAdministrationAirport Noise
Basics
Noise Analysis Overview
2010 Hershey Conference
Chris Osburn, Env. Protection Specialist, WAS-ADO
March 3, 2010
2 2Federal AviationAdministration
Airport Noise Basics – Hershey Airports Conference 2010March 3, 2010
Noise Quality issues
• Why is noise important• Brief overview of required noise analysis• Common needs/supplemental needs• What we are seeing • What we would like to see• Additional resources• What is new in noise • NextGen trends
Note: This presentation relates to simple NEPA projects, such as Short Form EAs and EAs. Not those requiring significant Impact Analysis or NCP development
3 3Federal AviationAdministration
Airport Noise Basics – Hershey Airports Conference 2010March 3, 2010
Why is noise so important
• It’s the law – Federal, State, and/or Local• Manage community expectations on noise issues• Noise has the potential to influence multiple additional
areas of NEPA analysis
Noise Analysis
Outputs
Land Use
CompatibilityDOT 4(f)
Environmental
JusticeSocioeconomic
Historic/
Cultural
Resources
4 4Federal AviationAdministration
Airport Noise Basics – Hershey Airports Conference 2010March 3, 2010
Brief overview of required noise analyses• Remember what FAA Order 1050.1E says….(Paragraphs
14.6a and 14.6b), regarding triggering aircraft types and activity levels for analysis– But don’t forget the highly controversial caveat
• Threshold of significance is an estimated noise increase of 1.5 dB at or above the DNL 65 dB – An increase from DNL 63.5 dB to DNL 65 dB is a significant
impact– A 3.0 dB increase within the DNL 60 dB, is not necessarily a
significant impact
5 5Federal AviationAdministration
Airport Noise Basics – Hershey Airports Conference 2010March 3, 2010
Common noise needs
• In most cases an analysis using either the FAA Area Equivalent Method (AEM)* and/or Integrated Noise Model (INM), expressed in DNL, is all that is needed
• A rationale no-build and/or alternative comparison cases, with same forecast of operations modeled for all cases
Note: AEM should not be used to illustrate a shrinking noise environment Source: DCA RSA EA – Ricondo and Associates, 2010
6 6Federal AviationAdministration
Airport Noise Basics – Hershey Airports Conference 2010March 3, 2010
Supplemental metrics use
• Supplemental Metrics can play a role in supporting the analysis, but are largely unnecessary for the majority of noise analysis
– Maximum A-weighted Sound Levels - (Lmax)– Sound Exposure Level - (SEL)– Equivalent Sound Level - (Leq) – Time Above a Specified Sound Level - (TA) – Sound Pressure Level - (SPL)
• Remember the FAA selects the appropriate supplemental analysis when necessary, therefore prior to utilizing supplemental metrics in any noise analysis FAA approval is required
7 7Federal AviationAdministration
Airport Noise Basics – Hershey Airports Conference 2010March 3, 2010
What we are seeing in recent documents• When to model noise and when noise analysis is not
required
• AEM, used to screen decreases in noise impacts where the forecast is falling
• Inconsistent use of appropriate noise metrics
• Inconsistent levels of analysis by consultants
• Development of a practical comparison contour
8 8Federal AviationAdministration
Airport Noise Basics – Hershey Airports Conference 2010March 3, 2010
What the FAA would like to see
• Simple and consistent analysis in the use of GIS and depiction of land use data in accordance with FHA Standard Land Use Coding Manual
• Avoid saying to much or too little so as to prevent confusion of the audience, “Keep it Clear”
• Follow Chapter 17 “Noise” in the Airports Desk Reference
• Work with the FAA to determine additional analytical needs
• Coordination with ATC for towered facilities on flight procedures and usage
• Beware of apples and oranges comparisons when describing noise
9 9Federal AviationAdministration
Airport Noise Basics – Hershey Airports Conference 2010March 3, 2010
Additional resources to consider
• FAA Order 1050.1E – Appendix A – Section 14• FAA Airports Desk Reference• FICON/FICAN Federal Agency Review of Selected
Airport Noise Issues, 1992• FAA-AEE Website• TRB-ACRP Reports 15 and 16• NOISEQUEST• Your ADO
Hint… Hint…
10 10Federal AviationAdministration
Airport Noise Basics – Hershey Airports Conference 2010March 3, 2010
What is new in the World of Noise
• INM 7.0b release – October 2009– Aircraft type and performance database changes– Corrections from 7.0a
• FAA AC 150/5020 Update – 2010– Additional guidance on supplemental metrics use– Revised mitigation boundary guidance
11 11Federal AviationAdministration
Airport Noise Basics – Hershey Airports Conference 2010March 3, 2010
NextGen Trends on Noise
Publications are available via the FAA NextGen Integration Office, JPDO, FAA-AEE, and DOT-VOLPE, TRB-ACRP, PARTNER-COE, and NEXTOR
Popular Topics include:
• Potential changes beyond the 65 DNL?
• New Analysis Tools – AEDT
• RNAV/RNP – OPD/CDA Procedures
• NASA N+2 / FAA CLEEN Aircraft Technologies
Source: FAA-AEE
12 12Federal AviationAdministration
Airport Noise Basics – Hershey Airports Conference 2010March 3, 2010
It is all about…….
Google Images – arktimes.com
….or it could cost you time and money!