PORT OF SEATTLE 
MEMORANDUM 
COMMISSION AGENDA                 Item No.        7b 
STAFF BRIEFING              Date of Meeting  September 24, 2013 

DATE:      September 13, 2013 
TO:       Tay Yoshitani, Chief Executive Officer 
FROM:     Stan Shepherd, Manager, Airport Noise Programs 
SUBJECT:   Part 150 Noise and Land Use Compatibility Study Update and
Recommendations 
SYNOPSIS 
The Part 150 Noise and Land Use Compatibility Study Update (Part 150 Study) is
designed to identify significant existing and future noise impacts, as defined by the
Federal Aviation Administration (FAA), within areas surrounding Sea-Tac Airport and
recommend actions to address those impacts.
Today's briefing will inform Commissioners about the May 15 public open house public
hearing, the State Environmental Policy Act (SEPA) review, and will offer a final review
of the noise mitigation recommendations currently included in the Draft Commission
Resolution and Part 150 Study Update.
The public comment period for the Part 150 Study recommendations and SEPA review
ran from April 15 through May 30 and approximately 70 comments were received on the
study. Responses to the comments received have been completed and will be included in
Part 150 documents.  The next step in the process will be for Commission to adopt a
resolution to approve the study and authorize staff to submit to the FAA for final review
and approval. 
On April 12, 2013, the Port issued the SEPA Threshold Determination of Non-
Significance (DNS) of Proposed Action.  The Port determined that the proposal would
not have a probable significant adverse impact on the environment.  The SEPA public
comment period ran from April 15 through May 30. The SEPA Final Determination was
issued on August 30 and should be final after the 21-day appeal period is complete on
September 20.

COMMISSION AGENDA 
Tay Yoshitani, Chief Executive Officer 
September 13, 2013 
Page 2 of 8 
BACKGROUND AND OUTREACH 
The Part 150 Study Update process began in 2009.  The Commission has been briefed
seven times on the study in public session. To date, the Port has sponsored five Part 150
Study public events: 
February 24, 2010  in Des Moines. 
June 9, 2010  in Burien. 
October 27, 2010  in Des Moines. 
April 9, 2011  at Sea-Tac Airport. 
May 15, 2013  in Burien. 
All outreach events were designed for maximum public involvement and were wellattended.
Briefings were also provided, as requested, to the following groups: 
Federal Way City Council. 
SeaTac City Council. 
Des Moines City Council. 
North Hill Community Club. 
City of SeaTac Hotel/Motel Committee. 
Highline School District Board of Directors. 
Citizens Against Sea-Tac's Expansion Community Group. 
Burien City Council. 
Normandy Park City Council.
Members of the study team also met multiple times with elected stakeholders at the local,
state, and federal levels, to keep them apprised of the process and solicit input. 
Other public involvement efforts: 
Periodic briefings to the Highline Forum to ensure that elected leaders in the
airport  communities  were  kept  informed  and  had  the  ability  to  offer  input
throughout the process. To date, the Highline Forum has received eight briefings. 
Seven Technical Review Committee (TRC) meetings, during which the study
team solicited feedback on technical issues related to the study.  The TRC is
comprised  of  land-use  planners  from  local  airport  communities  and
representatives from the FAA, Puget Sound Regional Council, Boeing Field,
Washington State Department of Transportation, and the Alaska Air Group. 
A dedicated data review session, during which the public could ask questions and
learn about the noise metrics used in a Part 150 Study. 
A combined open house and official public hearing was conducted on May 15, 2013.
Approximately 80 people attended.  In addition to Port staff, representatives from the

COMMISSION AGENDA 
Tay Yoshitani, Chief Executive Officer 
September 13, 2013 
Page 3 of 8 
consultant team of Landrum & Brown and staff from the FAA were on hand to answer
questions on the study.  A licensed court reporter was available at the meeting, so
attendees could formally offer public comments regarding the Part 150 Study Update and
the SEPA review process.  Responses to comments from this meeting and all others
received from April 15 through May 30 have been completed and will be included within
the Part 150 Study Update appendix documentation. A summary of the public comments
received will be provided to the Commission at today's briefing. 
PART 150 STUDY UPDATE PROCESS 
During the Part 150 Study Update process, the public was requested to provide their
perspective on which mitigation items should be proposed as options in the study. Input
received during the first four public meetings generated a  long list of  suggested 
recommendations. Using the FAA's established criteria for Part 150 community noise
mitigation, the list was refined to recommendations that could potentially provide a noise
reduction within the 65 Day Night Level (DNL) contour and would be allowable under
Part 150 regulations.
After the study update is approved by the FAA, Port staff will prepare for the
Commission a prioritization plan for the implementation of the approved noise mitigation
recommendations.    Final  FAA  approval  of  the  Part  150  noise  mitigation
recommendations   qualifies  these  recommendations  for  potential   FAA  Airport
Improvement Program (AIP) grant funding; however, approval of the recommendations
does not guarantee AIP grant funding or the Port's ability to commit resources.
PART 150 STUDY RECOMMENDATIONS 
The Part 150 Study recommendations are categorized as follows:  1) Continuing
measures with some modification;  2) Continuation of existing measures without
modification;  3)  New  measures;  and  4) Program  management  measures,  such  as
employee staffing and computer equipment and resources, which will assist with noise
program implementation and management.  (Note that the cost estimates provided are
preliminary and subject to change.) 
Continuing Measures with Some Modification 
Single Family Homes Sound Insulation:  Continue offering sound insulation to
eligible homes within the revised Noise Remedy Program Boundary. A potential
new element to this program is including air conditioning as part of the sound
insulation package for single family homes. Homes that have already received an
insulation package would not be eligible for air conditioning. 
o  Cost of adding air conditioning for one home: $12,500 
o  Number of remaining homes identified: 193 
o  Total cost estimate: $2,412,500

COMMISSION AGENDA 
Tay Yoshitani, Chief Executive Officer 
September 13, 2013 
Page 4 of 8 
Multi-Family Owner-Occupied Sound Insulation:  Offer sound insulation to
eligible  multi-family,  owner-occupied  residences  (condominiums)  within  the
revised Noise Remedy Program Boundary. 
o  Number of individual condominium units identified: 320 
o  Total cost estimate: $21,440,000, or $67,000 per unit 
Voluntary Acquisition of Residential Homes Located in the South Approach
Transition Zone (ATZ) for the 3rd Runway.
o  Number of single family homes identified: 16 
o  Number of apartment buildings identified: 6 
o  Total cost estimate: $10,000,000 
Maintenance of Run-Up Regulations:  Continue with existing measures and
modify to include the use of the recommended Ground Run-Up Enclosure (GRE). 
. 
Fly Quiet Program: Continue to implement the existing Fly Quiet Program and
modify to include different airline categories to enhance the program. 
Continuing Measures without Modification 
Insulation of Schools: As Port, Federal Aviation Administration (FAA) and State
funding permits, continue the sound insulation program for Highline Community
College buildings and schools in the Highline School District that were previously
identified as eligible. 
Property Advisory Service:  Provide residents and property owners within the
nearby communities access to timely and factual information concerning noise
programs and options for mitigation. 
Local Government Remedy Support:  Encourage the local jurisdictions to
undertake projects, provide services, and adopt laws that make them more
compatible with airport operations. 
Funding for Land Use and Noise Compatibly Planning:  Assist local public
agencies having planning authority within the 65 DNL Noise Contour to apply for
reimbursable funding for specific off-airport land use and noise compatibility
planning efforts that are consistent with the Part 150 guidelines and the Port's
noise compatibility goals. 
Prepare  Cooperative  Development  Agreements:    Continue  to  address
development potential within local jurisdictions for areas included within the
revised Noise Remedy Boundary.

COMMISSION AGENDA 
Tay Yoshitani, Chief Executive Officer 
September 13, 2013 
Page 5 of 8 
Explore Limited Rescheduling of Nighttime Flights: This measure involves the
voluntary rescheduling of aircraft flight times for nighttime short-haul flights. 
Use VOR Radials to Curb Aircraft Drifting from Noise Abatement Tracks: This
measure uses very high frequency (VHF) Omnidirectional range radials (VOR) to
prevent departing aircraft from drifting off the runway heading tracks as specified
in the FAA Tower Order. 
Preferential Runway Use:  This measure implemented a preferential runway
system during the nighttime hours for operations through the north flow nighttime
noise abatement corridor. 
Use of Flight Management System (FMS) Procedures: This measure is designed
to encourage the use of FMS procedures to improve noise abatement corridor
compliance. 
Use of Ground Equipment: This measure recommends the installation of power
and conditioned air in existing and newly constructed gates to minimize the use of
aircraft auxiliary power units. 
New Measures 
Multi-Family Tenant Occupied Sound Insulation: Offer sound insulation to
eligible apartment buildings inside the revised Noise Remedy Program Boundary,
starting with a pilot project to determine the project's feasibility. 
o  Number of individual apartment units identified: 1,157 
o  Total cost estimate: $46,280,000, or $40,000 per unit 
o  Estimate  for  a  feasibility  study  for  one  complex   approximately
$1,100,000 (included in total cost estimate above) based on a 20-24 unit
apartment building 
Church and Places of Worship Sound Insulation: Conduct a study to evaluate the
noise levels at various churches and places of worship within the revised Noise
Remedy Program Boundary to determine the feasibility  of providing sound
insulation to these buildings. 
o  Estimated cost of this study is approximately $40,000 
Voluntary Purchase of Avigation Easements on Individual Parcels with Mobile
Homes: Work with property owners and local jurisdictions to explore options to
discontinue the use of mobile homes as residences on single family zoned
properties, within the revised Noise Remedy Program Boundary.
o  Number of identified mobile homes on private land: 88 
o  Total cost estimate for purchase of avigation easements only:  $440,000,
or $5,000 per unit

COMMISSION AGENDA 
Tay Yoshitani, Chief Executive Officer 
September 13, 2013 
Page 6 of 8 
o  Potential additional cost if removal or relocation  of the structure  is
required: costs TBD 
Establish Feasible Locations for a Ground Run-up Enclosure (GRE): A GRE is a
large three-sided structure within which aircraft can perform required engine
testing,  thereby  resulting  in  a  quantifiable  noise  reduction  impact  on  the
surrounding communities. The Part 150 identified three feasible locations on the
airfield.  There are operational and cost issues associated with each of the feasible
locations on the airfield.  Concurrent with the Part 150 Study and within the
context of the Airport's future operational needs, Port staff will develop more
detailed construction cost estimates and facilities layouts for GRE site alternatives 
within the upcoming Sustainable Airport Master Plan.
o  Cost of structure only (not including site prep): $6,000,000 to $10,000,000 
o  Cost  of  site  preparation  (dependent  on  location)   $10,000,000  to
$25,000,000
Program Management Measures 
Replace and Upgrade the Noise Monitoring and Flight Tracking System:  The
current system is more than 12 years old and is recommended to be replaced with
newer technology innovations that require comprehensive updates to the existing
system.
o  Total cost estimate for replacement of flight tracking system and 25
permanent noise monitoring stations: $2,000,000 
Periodically Review and if Necessary, Update the Noise Exposure Maps (NEMs)
and the Noise Compatibility Program (NCP): Port Staff will periodically review
the NEMs and NCP to determine whether any significant changes have occurred
to the noise environment in accordance to the FAA's guidelines. 
Continue to Operate the Noise Programs Office: The Port will adequately staff
and operate the Noise Programs Office to carry out provisions of the Part 150
Study and provide noise-related community resources. 
FINANCIAL IMPLICATIONS 
Assuming all proposed noise mitigation recommendations in the current Part 150 Study
are approved by the Commission and the FAA, all recommendations receive 80% of
eligible costs through AIP grant funding, and the Port is able to commit resources to
cover its share (20% or more) of the funding match, the total project capital costs will be
approximately $131,575,000.
Internal operating costs of these programs are assumed to be met with existing resources.
Though the total amount expected to be spent will vary on a year-to-year basis, an

COMMISSION AGENDA 
Tay Yoshitani, Chief Executive Officer 
September 13, 2013 
Page 7 of 8 
average of $13,157,500 each year over a 10-year period may be necessary to fund these
projects.
Staff will work with the Office of Social Responsibility to follow federal Disadvantaged
Business Enterprise (DBE) guidelines to allow for small business opportunities.
NEXT STEPS 
A Commission resolution for adoption of the Part 150 Study Update is scheduled for first
reading on October 1, 2013, followed by second reading and approval on October 8. 
After Commission approves the resolution, the study documents will be submitted to the
FAA for review. It is anticipated that the FAA will issue the Federal Register notice in
November 2013, which will start the 180-day review period.  If no delays are
encountered during the review, we anticipate that the FAA will issue the Record of
Approval (ROA) by May 2014. 
ATTACHMENTS TO THIS BRIEFING 
Computer slide presentation. 
Draft Part 150 Study Update Commission Resolution. 
PREVIOUS COMMISSION ACTIONS OR BRIEFINGS 
January 15, 2013  Part 150 Noise and Land Use Compatibility Study Update. 
October 2, 2012  Part 150 Noise and Land Use Compatibility Study Update. 
August 23, 2011  Part 150 Noise and Land Use Compatibility Study Update
Briefing and Policy Roundtable with Mayors (or their representatives) from
Burien, Des Moines, Federal Way, Normandy Park, SeaTac and Tukwila. 
June 28, 2011  Part 150 Noise and Land Use Compatibility Study Update held
in Federal Way. 
October 26, 2010  Part 150 Noise and Land Use Compatibility Study Update. 
June 22, 2010  Part 150 Noise and Land Use Compatibility Study Update. 
March 23, 2010  Part 150 Noise and Land Use Compatibility Study Update held
in Normandy Park. 
February 23, 2010  Part 150 Noise and Land Use Compatibility Study Update 
and Policy Roundtable with mayors (or their representatives) from Burien, Des
Moines, Federal Way, Normandy Park, SeaTac and Tukwila. 
November 23, 2009  Authorization for the Chief Executive Officer to update the
Part 150 Noise Compatibility Plan Study for an approximate cost of $2.5 million,
representing an increase of $1.5 million over the previously authorized amount.

COMMISSION AGENDA 
Tay Yoshitani, Chief Executive Officer 
September 13, 2013 
Page 8 of 8 
June 23, 2009  Authorization for the Chief Executive Officer to procure and
execute a contract for consultant services to implement an update to the Part 150
Noise Study for an estimated cost of $500,000 to $1 million.