Part 150 Update 
June 28, 2011

Part 150 Process 
Study Initiation 

Data Collection            Previous Commission Briefings: 
June 23, 2009 
Prepare Existing &           February 23, 2010 
Future Noise Exposure         March 23, 2010 
Maps           June 22, 2010 
October 26, 2010 
Study Noise Reduction
Alternatives
Commission Briefing 
We are here    Prepare Draft Part 150 
Commission Roundtable 
Hold Public Hearing
Commission Briefing 
Finalize Noise Compatibility Program
Commission 1st Reading
of Resolution 
Review and Approval          Commission 2nd 
Reading/Final Passage
of Resolution 
2

Commission & FAA Approval Process 
Public hearing and comment period 
Port Commission meetings to adopt resolution approving
recommendations 
Commission-approved recommendations forwarded to
FAA for approval

Information for Commission Decisions 
Benefits of recommended new programs; public
response 
Estimated costs 
Responsible parties 
Schedule

Smaller noise contours = 
smaller program boundaries 
- FAA funding eligibility requires periodic updating of
contours & program boundary 
- Existing boundary based on contours reflective of more
and louder aircraft than existing & projected fleet 
- Proposed program boundary based on projected 5 year
forecasted contour 
- Sound insulation offers made to all eligible single-family
homes within existing program boundary 

5 5

Updated Noise Program Boundary 
Based on Forecasted 2016 Contour

Options Under Review 
- Residential sound Insulation within new boundary 
- Single-family homes, 
- Condominiums 
- Pilot project for apartment buildings 
- Air conditioning in new insulation work 
- Avigation Easements for individual mobile homes on
private land 
- Church sound insulation feasibility study 
- Partner with local jurisdictions on long-term, land
use and noise compatibility planning 

7 7

South Approach Transition Zone 
- Voluntary acquisition and
relocation services for
residential properties
south of the third runway
(Approach Transition
Zone) 
2016 Future 
65 DNL 

ATZ 
Single-Family 
Multi-Family 
N 
8

Hush House 
- Hush House Facts: 
- A Hush House is a term used for an enclosed, noise
suppressed, aircraft engine test facility 
- Typically consists of 3 walls that deflect jet blast 
- Hush House will typically reduce noise by 15-20 dB 
- Typical Hush Houses cost $3 - $6 million (structure
only) 
- Site factors determine exact costs 


9 9

Hush House Evaluation 
- Facility 
- Fixed orientation with the wind 
- SEA-TAC facility would need to open to the south so
that aircraft would face the south during run up 
- Popular design (Portland, Chicago, Indianapolis) 




10 10

Hush House Evaluation 



A       B 
D 

E 


11 11

Options Under Review 
- Noise Monitoring System 
- Evaluating the need to add terminals 
- Evaluating new reporting techniques 
- Fly Quiet Program 
- Identifying possible enhancements 
- Expanding the program to include ATCT reporting of
operational modes for comparison to runway use
goals 
- Updating the Noise Exposure Maps as necessary 

12 12

Update on Public Outreach 
Last Public Workshop:
- Saturday, April 9, 2011 
- SEA-TAC Airport  Arrivals Hall 
- 10:00 am  4:00 pm 
- Open house format with topic-based stations 
- Over 75 people attended 
- Airfield tours were offered 
Next Public Workshop:
- Late summer/fall 2011 
- Public Hearing 
13 13

Update on Public Outreach 
Limited-English Speaking Outreach: 
- Hired interpretive services for written and oral communication 
- 4 languages 
- Spanish 
- Vietnamese 
- Somali 
- Cambodian 
- Publicized phone number for those in need of interpretive services 
- Distributed flyers to places or organizations that have contact with
limited-English speakers 
- Part 150 website can be converted into other languages 
- Will continue to monitor the response to see if additional services
are needed 

14 14

Part 150 - Schedule 
2010                                    2011                        2012 
Task                 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun  Jul  Aug Sep Oct Nov Dec Jan Feb 
Notice to Proceed 
Project Kick-off 
Prepare Aviation Forecasts 
Affected Environment                                                 We are here
Existing Noise Exposure 
Future Noise Exposure 
Noise Abatement Alternatives 
Land Use Alternatives 
Noise Compatibility Program 
Draft Document   Summer 2011
Submit Final to FAA    December 2011
FAA Reviews NEM/NCP   FAA will take 8 months to review/approve

Public Involvement 
- Public Workshops          1           2              3               4                 5
- Special Presentations                                         on demand


15

Questions?