RESOLUTION NO. 3683 

A RESOLUTION of the Port Commission of the Port of 
Seattle, concluding the 2013 Federal
Aviation Regulation (FAR) Part 150 Noise
and Land Use Compatibility Study Update
for Seattle-Tacoma International Airport. 
WHEREAS,   Seattle-Tacoma International Airport is an essential regional
economic contributor and transportation facility and the Port of Seattle Commission
recognizes that responsible stewardship of this facility must include effective programs,
strategies, and technologies to reduce noise impacts resulting from aircraft operations; and
WHEREAS, in 1985, the Federal Aviation Administration (FAA) approved the
Airport's Part 150 Noise and Land Use Compatibility Study (Part 150 Study) established 
by Resolution No. 2943, as amended; and 
WHEREAS, in 1993, the Commission adopted Resolution No. 3144, setting forth
amendments to the Part 150 Study following a substantial public process review, and the
FAA subsequently approved those amendments; and 
WHEREAS, in 2000, the Commission adopted Resolution No. 3443 setting forth
amendments to the Part 150 Study following substantial public process review and the
FAA subsequently approved those amendments; and 
WHEREAS, in 2009, the Port engaged in an update to the Part 150 Study,
culminating with this Resolution; and 
WHEREAS, in 2009, the Port formed a Technical Review Committee (TRC),
consisting of land use planners from local jurisdictions, the FAA and other aviation­
related professionals to assist in the Part 150 Study's review; and 
WHEREAS, citizens of the region were provided multiple opportunities to 
participate in the Part 150 Study process, express concerns regarding noise impacts 
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                       resulting from operations at Sea-Tac Airport and offer suggestions on how to reduce those
impacts; and 
WHEREAS, the Part 150 Study document includes review and analysis of
alternatives and suggestions provided by the general public; and 
WHEREAS, the results of all analyses have been made available to the public; 
and 
WHEREAS, a public comment period for the Part 150 document and the related
State  Environmental  Policy  Act  (SEPA)  review  occurred  from  April  15,  2013,  to
May 30, 2013; and
WHEREAS, a formal public hearing on the Part 150 Study recommendations and
proposed SEPA Determination ofNon-Significance was held on May 15, 2013; and 
WHEREAS,  a SEPA  Determination of Non-Significance was  issued on
August 30, 2013; and
WHEREAS, the Port Commission at its Regular Commission Meeting on
September 24, 2013, received a briefing from Port staff on the final recommendations; 
NOW, THEREFORE, BE IT RESOLVED by the Port Commission of the Port
of Seattle as follows: 
Section 1.  The Part 150 Study prepared updated Noise Exposure Maps for
Seattle-Tacoma  International  Airport  for  Existing  (2013)  and  Future  (2018)
conditions. Port staff is directed to submit the updated Noise Exposure Maps to the
FAA for final review and acceptance. 
Section 2.  The Part 150 Study  is hereby amended  to include Continuing
Measures from previous Part 150 Studies and new Abatement, Mitigation and
Program Management Alternatives set forth herein. Port staff is directed to submit
these Alternatives  to the FAA  for  final  review and  approval  and,  upon  FAA
approval, to implement the directives in this Resolution, subject to Port and FAA
funding and all other required Port Commission approvals.

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                               Section 3.     Continuing Measures: 
a)  Insulation of Schools:  As required 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. 
b) 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. 
c)  Local Government Remedy Support:  Encourage the local jurisdictions to
undertake  projects,  provide  services,  and  adopt  laws  that  reinforce
neighborhoods and make them more compatible with airport operations. 
d)  Funding for Land Use and Noise Compatibly Planning: Assist local public
agencies having planning authority within the 65 DNL Noise Contour with
application 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.
e)  Prepare  Cooperative  Development   Agreements:   Continue  to  address
development potential within local jurisdictions for areas included within
the modified Noise Remedy Boundary.
f)   Explore Limited Rescheduling of Nighttime Flights: This measure involves
the voluntary rescheduling of aircraft flight times for nighttime short-haul
flights. 
g)  Use VOR Radials to Curb Aircraft Drifting from Noise Abatement Tracks: 
This measure uses very high frequency (VHF) Omnidirectional range
radials (VOR) to curb departing aircraft from drifting off the runway
heading tracks as specified in the FAA Tower Order. 
h)  Preferential Runway Use: This measure implements a preferential runway
system during the nighttime hours for operations through the north flow
nighttime noise abatement corridor. 
i)   Use of Flight Management System (FMS) Procedures: This measure is
designed to encourage the use of FMS procedures to improve noise
abatement corridor compliance. 
j)   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.

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                                Section 4.     Abatement Alternatives: 
a)  Ground-Run-up  Enclosure  (GRE):  GREs  can  provide  significant  noise
reduction during aircraft engine maintenance testing.  The Part 150's GRE
Siting  Study  identified  three  feasible  locations  that  would  provide  a
quantifiable noise reduction impact for the surrounding communities during
engine testing. The Port shall determine an exact location for a GRE on the
airfield through the ongoing Sustainable Airport Master Planning process. 
b) Maintenance Run-Up Regulations:  Continue with existing measures and
modify these measures to include the use of the Ground Run-Up Enclosure
(GRE) if constructed. 
c)  Expand the Fly Quiet Program: The Port established a Fly Quiet Program
following the recommendation from the 2000 Part 150 Study Update. This
measure would modify the program to include: 
a.  Use of Air Traffic Control Tower reporting of operational modes for
comparison to runway use goals 
b.  Provisions for the use of a GRE once it's constructed 
c.  Different categories of airline operations 
Section 5.     Mitigation Alternatives: 
a)  Noise Contours:  The Port shall adopt the 2018 65 DNL noise contour as
the basis for the Port Noise Compatibility Program and all related programs.
b)  Single Family Sound Insulation:  The Port shall provide for the installation
of sound insulation in single-family residential units within the modified 
Noise Remedy Boundary based on the 2018 65 DNL Contour.
c)  Owner-Occupied Multi-family (Condominiums) Insulation: The Port shall
provide for the installation of sound insulation in owner-occupied multifamily
units within the modified Noise Remedy Boundary based on the
2018 65 DNL Contour. 
d)  Tenant-Occupied Multi-family (Apartments) Insulation:  The Port shall
conduct a pilot program to sound insulate tenant-occupied units within the
modified Noise Remedy Boundary based on the 2018 65 DNL Contour. 
e)  Avigation Easements for Owners of Mobile Homes on Private Lots:  The
Port shall develop a program to offer compensation  to owners of mobile
homes on individual lots in return for removing the mobile homes and/or
providing avigation easements for air rights. This would be offered as a
pilot  program  to  eligible  property  owners  within  the  modified  Noise
Remedy Boundary based on the 2018 65 DNL Contour.
f)   Churches and Places of Worship Sound Insulation: The Port shall initiate a
formal study to evaluate the noise levels at various churches/places of 
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                                 worship within the modified Noise Remedy Boundary based on the 2018
65 DNL Contour. 
g)  Property Advisory Service: The Port shall provide residents and property
owners within the nearby communities access to timely and factual
information concerning (1) eligibility for noise mitigation programs; (2)
assistance with making decisions on different options; (3) information
regarding the mitigation programs; and (4) assurances that the programs
are intended to improve the living, working, and leisure-time environment. 
h)  Local  Government  Remedy  Support:  The  Port  will  encourage  local
jurisdictions to undertake projects, provide services, and adopt laws that
reinforce  neighborhoods  and  make  them  compatible  with  the  airport
operations. 
i)   Funding for Land Use and Noise Compatibility Planning: Port staff shall
assist public agencies having planning authority within the 65 DNL Noise
Contour with application for reimbursable funding for specific off-airport
land use/noise compatibility planning efforts that are consistent with the
Title 14 CFR Part 150 guidelines and the Port's noise compatibility goals. 
j)   Approach  Transition  Zone  Acquisition:  Port  Staff  shall  acquire  on  a
voluntary basis residential properties experiencing noise levels of 65 DNL
or greater, located within the South Approach Transition Zone. 
k)  Prepare Cooperative Development Agreements: Port staff shall continue to
address development potential with local jurisdictions for areas included
within the modified Noise Remedy Boundary. 
Section 6.     Program Management Alternatives: 
a)  Evaluate  Noise  Monitoring  and  Flight  Tracking  System:  The  Port  shall
evaluate  the  permanent  noise  monitoring  and  flight  tracking  system
software and hardware to determine alternatives for newer, more reliable
and cost effective systems. 
b)  Periodically Review and. if Necessary. Update the Noise Exposure Maps 
{NEMs) and the Noise Compatibility Program (NCP):  Port staff shall
periodically review the NEMs and NCP to determine if any significant 
changes have occurred  to the noise environment  in accordance  with the
FAA's guidelines.
c)  Continue to operate the Noise Office: The Port shall adequately staff and
operate the Noise Office to carry out provisions of the Part 150 Study and
provide noise-related community programs. 

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                   ADOPTED by the Port Commission of the Port of Seattle at a duly noticed meeting
thereof, held this 22nd day of October, and duly authenticated in open session by the
signatures of the Commissioners  voting in favor thereof and the seal of the Port
Commission. 

















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