Item number: 9_Supp__
Date of Meeting: February 23, 2010




Federal Aviation Regulation Part 150
Aircraft Noise and Land Use Compatibility Study
Update
Stan Shepherd, Manager Airport Noise Programs   Diane Summerhays, Director of Community Development

Federal Aviation Regulation -- Part 150
Airport noise study
Quantify noise impacts to sensitive land uses
Bring partners together to develop recommendations for
mitigating the impact of noise
Voluntary, typically every 5 years
Due to 3rd Runway FAA Record of Decision study required

Noise Mitigation History
1970's  Sea-Tac Communities Plan
1985  First Part 150
1990  Noise Mediation Agreement
1993  Part 150 Update
2002  Part 150 Update

Products of a Part 150

Noise exposure maps
Day Night Level (DNL) is a
mandatory metric per FAA
regulations
Noise Compatibility Plan

Sound Insulation
Over 9,300 single family homes
Including 87 homes to mitigate for 3rd runway noise
An additional 236 condominium units were insulated
Highline School District -- $100M funding plan for sound
insulation and related work
Seven schools of 15 have been completed

Current Part 150 Consulting Team
Landrum & Brown: Completed over 100 Part 150 Studies

Synergy Consultants: National leader in aviation
environmental studies
Norton-Arnold & Company: Public involvement firm with over
14 years experience in the Northwest

Schedule
2009
Data collection
Project kickoff
2010
Consultant contract signed
Technical analysis
Public participation
2011
Develop recommendations
Public Hearing on draft document
Submit draft documents to FAA to begin 180 day review

Part 150 Scope of Work
Allows flexibility to include evaluation of all reasonable
noise reduction possibilities:
Outcomes of public meetings will drive the direction of
the scope
Process and study elements can be modified if
needed
Recommendations responsive to public concerns &
based on data

Noise Perception Versus Data

Data often presents a
different picture than
perceptions
Noise Contours may be
smaller than forecast in
runway EIS

Expectations related to Noise Contours
EIS data versus current data
35,000,000                                                         500,000
450,000
30,000,000
Aircraft operations                                   400,000
25,000,000                                                         350,000
300,000
Passengers 20,000,000
Passengers             250,000
15,000,000
200,000  Aircraft operations
10,000,000                                                         150,000
100,000
5,000,000
50,000
0                                                   0
1979     1984     1989     1994     1999     2004     2009
Year

Engaging Stakeholders
There are multiple vehicles planned to engage our stakeholders:
Public Workshops
Technical Review Committee
Highline Forum
Special Briefings and Presentations
Dedicated Website
Commission Briefings
Public Hearings

Public Notification
Air Mail
Seattle Times
Highline Times
Constant Contact - e-mail notifications
Highline Forum
Media Advisories
Noise Information Line
Various Community E-mails
Website (*Internal and External)
*Consultants estimate 800 visits
Blog postings

Public Workshops
Hosting up to six public workshops focused on
major elements of the study.
Our first workshop is scheduled to be held
Wednesday, February 24, 2009, from 5:00 to
7:00 P.M. at Mount Rainier High School
Presentations followed by small group breakout
sessions for public evaluation of problems &
solutions
Open to all

Technical Review Committee
Federal Aviation Administration
Airline Pilot Representatives
Puget Sound Regional Council
WSDOT Aviation Division
Boeing Field
Land Use Planners from local communities
Port of Seattle

Flight Tracks
Federal Aviation Administration
Only entity with authority to change flight procedures
Extensively studied in the 2002 Part 150
No viable alternatives without shifting tracks to another
community

Recommendations
Determine if proposal is within 65 DNL. If yes, screen for
inclusion in the study
FAA generally does not approve proposals in the Part 150 for
flight track changes that do not reduce noise within the 65 DNL
contour
If issue is related to non-compliance of a noise abatement
procedure, staff will raise the issue immediately with the FAA