Template revised January 10, 2019.
COMMISSION
AGENDA MEMORANDUM
Item No.
8f
ACTION ITEM
Date of Meeting
April 14, 2026
DATE : April 6, 2026
TO: Stephen P. Metruck, Executive Director
FROM: Sarah Cox, Director Aviation Environment and Sustainability
Eileen Francisco, Director Aviation Project Management Group
SUBJECT: Sound Insulation for Places of Worship Construction Authorization (CIP #C200098)
Amount of this request:
$2,960,000
Total estimated project cost:
$13,897,000
ACTION REQUESTED
Request Commission authorization for the Executive Director to 1) increase the project
authorization for the Places of Worship Sound Insulation project; and 2) advertise and execute a
construction contract for one Place of Worship property.
The amount of this authorization request is $2,960,000 for a total program authorization of
$13,897,000.
EXECUTIVE SUMMARY
The Sound Insulation Program exists to help reduce community noise impacts caused by aircraft
utilizing the Airport. As part of its long-term commitment to communities surrounding the
Airport, the Port offers sound insulation for eligible properties within the current Federal Aviation
Administration (FAA) Airport Noise Compatibility (Part 150) noise remedy boundary. This
voluntary program includes Single-Family Homes, Condominiums, Apartments and Places of
Worship. This authorization request is specific to Places of Worship.
The Sound Insulation Program, previously authorized, remains on track to complete all work in
compliance with Commission Motion 2020-04, which requires completion by the end of 2026.
This consists of 327 apartment units in 10-properties, 27 condominium units in 1-complex and
37 single-family homes. This represents all properties that have agreed to proceed with the
Sound Insulation Program. We will provide a briefing later in the year on the work completed.
COMMISSION AGENDA – Action Item No. 8f Page 2 of 5
Meeting Date: April 14, 2026
Template revised June 27, 2019 (Diversity in Contracting).
The Commission previously authorized construction for three participating places of worship
properties, that are actively in construction. There is now one additional property, that declined
to participate in 2023, requesting to participate in the program. This request will allow the Port
to commence construction for one additional place of worship property for a total of four
participating properties. Due to the timing of this additional place of worship property, the Port
will be unable to finish construction of this property within that timeframe. We anticipate
completing the work in 2027.
The Port has received $6.25M in FAA Airport Improvement Program (AIP) grant funding to
partially fund places of worship design and construction. The scope of construction work includes
installation of new Sound Transmission Class (STC) rated windows, doors, and storm doors, as
well as supplemental ventilation to meet the FAA standard of 45 decibel (dB) Day-Night Average
Sound Level (DNL) interior noise that can be achievable with at least a 5 dB reduction.
JUSTIFICATION
Resolution No. 3683 was adopted by the Commission on October 22, 2013, and included all
recommendations from the Part 150 Study, including sound insulation for eligible structures
within the Noise Remedy Boundary. This authorization will help to meet the requirements of
Resolution No. 3683 to conduct an ongoing Sound Insulation Program.
Diversity in Contracting
Federal DBE goal for this project is 7%.
DETAILS
This request is for construction authorization that includes one place of worship property that is
eligible to participate in the program.
Under state law, (R.C.W. 53.54.030), any owner who participates in the program is required to
provide the Port with an Avigation Easement in return for the Port paying the cost of the
improvements. A Subordination Agreement or Consent is required to convey the Avigation
Easement if there is a mortgage, deed of trust, or other lien on the property.
Scope of Work
Construction to include:
(1) STC rated solid core doors.
(2) STC rated windows.
(3) Storm doors.
(4) Positive exterior air ventilation.
(5) Regulated materials abatement.
(6) Other associated work as determined to be necessary by the architect to reduce noise
or to meet code.
COMMISSION AGENDA – Action Item No. 8f Page 3 of 5
Meeting Date: April 14, 2026
Template revised June 27, 2019 (Diversity in Contracting).
Schedule
Activity CIP #C200098 Places of Worship Program
Commission design authorization
Design start
Construction start
Cost Breakdown CIP #C200098
This Request
Total Project
Design
$0
$7,437,000
Construction
$2,960,000
$12,563,000
Total
$2,960,000
$20,000,000
ALTERNATIVES AND IMPLICATIONS CONSIDERED
Alternative 1 – Authorize Places of Worship Sound Insulation Program to commence
construction on one additional property (CIP #C200098).
Cost Implications: $2,960,000
Pros:
(1) Meets commitment to noise remediation in the community per Commission Resolution
3683.
(2) Accelerates work to uphold the intent of Commission Motion 2020-04, reaffirming our
commitment to complete the project as quickly as feasible.
(3) Allows staff to begin construction on one additional place of worship property.
(4) Provides a direct community benefit to reduce aircraft noise impacts.
Cons:
(1) The Port assumes the financial risk for this work if FAA AIP grant funding cannot be
secured.
This is the recommended alternative.
FINANCIAL IMPLICATIONS
Cost Estimate/Authorization Summary
Capital
Expense
Total
COST ESTIMATE
Original estimate
$25,872,000
$0
$25,872,000
Previous changes – Savings taken 11/29/23
($5,872,000)
0
($5,872,000)
Revised estimate
$20,000,000
0
$20,000,000
AUTHORIZATION
Previous authorizations
$10,937,000
0
$10,937,000
COMMISSION AGENDA – Action Item No. 8f Page 4 of 5
Meeting Date: April 14, 2026
Template revised June 27, 2019 (Diversity in Contracting).
Current request for authorization
$2,960,000
0
$2,960,000
Total authorizations, including this request
$13,897,000
0
$13,897,000
Remaining amount to be authorized
$6,103,000
$0
$6,103,000
Annual Budget Status and Source of Funds
This project, CIP C200098, was included in the 2026-2030 capital budget and plan of finance with
a budget of $20,000,000. The funding sources would be AIP grants, ADF (Airport Development
Fund), and revenue bonds.
The capital cost of the entire places of worship program is estimated at $20,000,000. The AIP
grants is estimated at $6 million. Therefore, the airline’s Rate Base Cost is estimated at $13.7
million with cost recovered through landing fee when each place of worship property
construction is substantially completed and grants are received.
Financial Analysis and Summary
Project cost for analysis
$20,000,000
Business Unit (BU)
Airfield Movement Area
Effect on business performance
(NOI after depreciation)
NOI after depreciation will increase due to inclusion of
capital (and operating) costs in airline rate base
IRR/NPV (if relevant)
N/A
CPE Impact
$0.04 in 2028
Future Revenues and Expenses (Total cost of ownership)
Once the project is complete and the Avigation Easement is permanently recorded on the
parcel(s), there will be no further expenses incurred.
ATTACHMENTS TO THIS REQUEST
(1) Presentation slides
PREVIOUS COMMISSION ACTIONS OR BRIEFINGS
October 10, 2023 – Commission authorized construction for three places of worship
properties.
July 25, 2023 – Commission briefing on sound insulation programs and construction
authorization for Phase 2 Apartment Program.
August 9, 2022 – Commission briefing on sound insulation programs and construction
authorization for Phase 1 Apartment Program.
COMMISSION AGENDA – Action Item No. 8f Page 5 of 5
Meeting Date: April 14, 2026
Template revised June 27, 2019 (Diversity in Contracting).
December 14, 2021 – Commission authorized design services for Places of Worship Sound
Insulation Program.
August 10, 2021 – Commission briefing on sound insulation programs and design
authorization for the Apartment Program.
December 15, 2020 – Commission briefing on sound insulation programs, acceleration and
staff recommendations.
December 15, 2020 – The Commission authorized consultant services IDIQ contract to
provide sound insulation program development support for single-family homes,
apartments, and places of worship.
February 25, 2020 – Commission briefing on sound insulation programs, acceleration, and
staff recommendations. Motion 2020-04 of the Port of Seattle Commission directing the
acceleration of the sound insulation program at the Airport.
July 10, 2018 – The Commission authorized contracting for Sound Insulation Architect and
Project Oversight Consulting for Condominiums.
October 11, 2016 – The Commission authorized contracting for Sound Insulation Architect
and Project Oversight Consulting Services and Job Order Contracting (JOC) for Single-
Family Homes.
October 22, 2013 – Second Reading and Final Passage of Resolution No. 3683 concluding the
Federal Aviation Regulation (FAR) Part 150 Noise and Land Use Compatibility Study
Update for Seattle-Tacoma International Airport.
October 8, 2013 – First Reading of Resolution No. 3683 concluding the Federal Aviation
Regulation (FAR) Part 150 Noise and Land Use Compatibility Study Update for Seattle-
Tacoma International Airport.
April 23, 2013 – The Commission authorized contracting for Sound Insulation Consulting
Services and Job Order Contracting (JOC) for Single-Family Homes.