Item No. 3c supp
Meeting Date: April 25, 2017
Noise Programs & NextGen Briefing
Arlyn Purcell, Director Aviation Environmental Services
Stan Shepherd, Manager Airport Noise Programs
David Suomi, FAA Deputy Regional Administrator
Steve Karnes, FAA Senior Technical Advisor


1

Presentation Overview
Noise Information Hotline
Increased Operations
Economic Impacts
Noise Contours
Noise Mitigation Programs
Fight Procedures
Noise Abatement and Mitigation Programs
2

Noise Information Hotline
Noise Office Inquiries  Noise Hotline & online comment forms
2016: 2,959
10 people = 55% of comments 
2015: 2,632
4 people = 59% of comments
2014: 2,172
4 people = 63% of comments
Calls to the Noise Office have increased in the past couple of years
3

Aircraft Operations
2016: 412,170 operations  8% increase
2015: 381,408 operations  12% increase
2014: 340,478 operations  7% increase
2013: 317,186 operations
The difference between 2013 and 2016 was 94,984 operations.
That's 260 more aircraft going over homes per day. 
The increase in operations is predominantly what is causing additional noise complaints
4

Sea-Tac Airport Economic Impacts
Economic Impact = $16.3 billion annually in business revenue
Generates 171,769 jobs / 19,000 directly related to the airport
Approximately 4,000 airport employees live in the local cities
Each international flight generates $75 million annually to the
economy
Tourism creates $365 million annually in state & local taxes and
approximately 140,000 jobs.

Sea-Tac Airport is a major contributor to the local economies
5

Noise Contour & Noise Remedy Boundary
2018 
Noise Remedy
65 DNL
Boundary
Contour




Residential sound mitigation occurs within the Noise Remedy Boundary per FAA rules
6

Accomplishments to Date
9400 Single-family homes sound insulated
8 Schools sound insulated
14 College buildings sound insulated
246 Condo units sound insulated
359 Mobile home units acquired and residents
relocated
$400 million spent since 1985 on mitigation
7

Part 150 Approved Sound Mitigation Programs
Single-Family Residential Insulation  Continuation of
1985 program
Condominium Insulation
Apartment Insulation  Pilot Project
Places of Worship Insulation  Pilot Project
South Approach Transition Zone Voluntary Residential
Acquisition
School Insulation MOA with FAA & School District
Part 150 is the FAA regulation outlining how airports study noise
8

Noise Abatement
Flight Procedure Monitoring


Procedures are designed to minimize noise impacts
9

Jet Noise Abatement Procedures


Noise Abatement Procedures are for jet aircraft only
10

Flight Paths
North Flow                               South Flow





Flight paths have been in place since 1990
11

NextGen And Conventional Approaches At SEA
South Flow                            North Flow

Conventional
Approach
Segment
Black Dashed
Line
NextGen
Track
Segment
Red Line

Not all approaches are NextGen
12

South Flow Before and After Greener Skies

NextGen Narrowed
Approach Path



Greener skies approaches are west side only
13

North Flow Before and After Greener Skies
NextGen Narrowed
Approach Path




NextGen Narrowed
Approach Path
Greener skies approaches are west side only
14

Questions?

15