COMMISSION 
AGENDA MEMORANDUM                        Item No.          8c 
ACTION ITEM                            Date of Meeting     December 14, 2021 

DATE:     December 3, 2021 
TO:        Stephen P. Metruck, Executive Director 
FROM:    Arlyn Purcell, Director Aviation Environment and Sustainability 
Stan Shepherd, Senior Manager Airport Noise Programs 
Wayne Grotheer, Director Aviation Project Management 
SUBJECT:  Places of Worship Sound Insulation Program - Planning and Design Authorization
(CIP #C200098) 
Amount of this request:               $7,387,000 
Total estimated project cost:         $25,872,000 
ACTION REQUESTED 
Request Commission authorization for the Executive Director to plan, design, and prepare
construction documents for the Places of Worship Sound Insulation Program (CIP #C200098)
located within the current noise remedy boundary near the Seattle-Tacoma International Airport
(Airport) in an amount not to exceed $7,387,000 of a total Places of Worship program cost of
$25,872,000. 
EXECUTIVE SUMMARY 
The Sound Insulation Program helps 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 work
typically 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 a 45 decibel (dB)
Day-Night Average Sound Level (DNL) interior noise that can be achievable with at least a 5 dB
reduction. 
This request will allow the Port to commence with acoustic testing, regulated materials testing,
title search, avigation easement and subordination document support, language translation
services,  other  necessary  program  planning,  and preparation  of  design  and  construction
documents for all 7 places of worship within the noise remedy boundary. Staff will return to the
Commission for construction authorization(s) for these projects. 

Template revised January 10, 2019.

COMMISSION AGENDA  Action Item No. __8c__                              Page 2 of 6 
Meeting Date: December 14, 2021 
This request does not include the Port's sound insulation work associated with condominium
buildings, apartment complexes, single-family homes, or the south Approach Transition Zone
voluntary residential acquisition. Staff will return to Commission to request authorization(s)
associated with these items as needed. 
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. 
In February 2020, the Commission passed Motion 2020-04 to accelerate this work with the goal
of completing work on these programs by the end of 2026. Moving forward with the places of
worship sound insulation is critical to compliance with the Motion. 
Diversity in Contracting 
Since the project will be partially funded with FAA Airport Improvement Program (AIP) grants,
the Port will follow the United States Department of Transportation's Disadvantaged Business
Enterprise (DBE) program requirements. A DBE goal of 2.87% has been established for this project
and the DBE Plan will be administered in accordance with 49 CFR Part 26 by the Diversity in
Contracting Department. The DBE goal was calculated from the number of available federally
certified DBE firms available for specialized work on the places of worship that can perform the
scopes of work as identified for the project. Dependent upon the Prime consultant's DBE scope
allocation during design, the ultimate DBE goal may exceed the current established goal. 
DETAILS 
Staff estimates 7 places of worship are potentially eligible to participate in the program. The Port
has retained a consultant to evaluate, confirm, and document eligibility of each place of worship
based on Port and FAA criteria, as well as owner willingness to participate. The pre-construction
design and testing will define the scope of this program and will be used to develop cost estimates
prior to construction.
The work associated with Places of Worship is highly specialized and detailed oriented. Places of
Worship provide unique challenges  when designing  and constructing  sound insulation 
improvements for architecturally significant buildings. Design requirements are developed and
refined to meet the needs for each unique structure. Scheduling the construction work also
provides unique challenges; the work needs to be performed while limiting the impact to the
places of worship day-to-day operations (worship schedule, schooling, special events, etc.).
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

Template revised June 27, 2019 (Diversity in Contracting).

COMMISSION AGENDA  Action Item No. __8c__                              Page 3 of 6 
Meeting Date: December 14, 2021 
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 
The consultant will provide good faith regulated materials surveys, planning, language translation
services, project documentation, acoustic testing, FAA AIP grant funding documentation, design
and construction documents, and any ancillary scope elements necessary to complete the
design(s). Typical design to include: 
(1)      STC rated solid core doors 
(2)      STC rated windows 
(3)      Storm doors 
(4)      Positive exterior air ventilation 
(5)      Other associated work as determined to be necessary by the architect to reduce noise or
to meet code 
(6)      Regulated materials abatement as necessary to facilitate these installations 

Schedule 
This is a multi-phased design and construction program. Prior to initiating design, there is 
extensive pre-design planning work that is required to be completed before proceeding with final 
design documents. Once the pre-design work is completed, the design and construction will
proceed concurrently throughout the duration of the program. The first design package will
commence Q4  2022 and will be followed by subsequent design packages until completion. Staff
is planning to return to Commission in Q1-2023 for construction authorization associated with
the first design package and will continue requesting construction authorization for design
packages throughout the duration of the program. The schedule below shows design beginning
in 2022 and sound insulation of all participating eligible places of worship completed by the end
of 2026, per the Port Commission Motion. 
Activity 
Design start, first package                         2022 Quarter 4 
Commission construction authorization, first     2023 Quarter 1 
package 
Construction start                                2023 Quarter 2 
In-use date (complete program)                 2026 Quarter 4 
Cost Breakdown                                     This Request           Total Project 
Design                                                  $7,387,000             $7,437,000 
Construction                                                     $0            $18,435,000 
Total                                                         $7,387,000             $25,872,000 

Template revised June 27, 2019 (Diversity in Contracting).

COMMISSION AGENDA  Action Item No. __8c__                              Page 4 of 6 
Meeting Date: December 14, 2021 
ALTERNATIVES AND IMPLICATIONS CONSIDERED 
The other alternative being considered would require longer schedules and/or be costlier. Based
on the direction provided by the Commission on February 25, 2020 to accelerate all active and
planned Sound Insulation Programs, there are at present no other feasible options other than to
proceed with the recommended alternative for this scope of work as described. 
Alternative 1    Defer the program 2-years to allow for COVID economic recovery with
accelerated project duration 
Cost Implications: $28,500,000 
Pros: 
(1)   No Port expenditures until 2023 
Cons: 
(1)   Costs would be more expensive in the long term 
(2)   Delaying the noise remediation program could reduce the Port's credibility in the
community by not honoring the Port commitments in a timely manner 
(3)   Would not meet the intent of Commission Motion 2020-04 to accelerate the airport's
noise mitigation program 
This is not the recommended alternative. 
Alternative 2  Authorize Sound Insulation Program to plan, design and prepare construction
documents for the Places of Worship Program (CIP #C200098) 
Cost Implications: $25,872,000 
Pros: 
(1)   Meets commitment to noise remediation in the community per Commission Resolution
3683 
(2)   Maintains the program schedule to meet the intent of Commission Motion 2020-04 to
accelerate the airport's noise mitigation programs prior to 2027 
(3)   Acoustic testing will identify which places of worship within the noise remedy boundary
are eligible for sound insulation 
(4)   Allows staff to begin design of all the places of worship projects
(5)   Provides a direct community benefit to reduce aircraft noise impacts in places of
worship 
Cons: 
(1)   The Port assumes the financial risk for this work if FAA AIP grant funding cannot be
secured 
This is the recommended alternative 

Template revised June 27, 2019 (Diversity in Contracting).

COMMISSION AGENDA  Action Item No. __8c__                              Page 5 of 6 
Meeting Date: December 14, 2021 
FINANCIAL IMPLICATIONS 
Cost Estimate/Authorization Summary              Capital        Expense           Total 
COST ESTIMATE 
Original estimate                                $25,872,000               $0     $25,872,000 
AUTHORIZATION 
Previous authorizations                             $50,000                0         $50,000 
Current request for authorization                $7,387,000                0      $7,387,000 
Total authorizations, including this request       $7,437,000                0      $7,437,000 
Remaining amount to be authorized           $18,435,000             $0    $18,435,000 
Annual Budget Status and Source of Funds 
This project, CIP C200098, was included in the 2022-2026 capital budget and plan of finance with
a budget of $25,872,000. The funding sources would be commercial paper, AIP reinvested funds
and revenue bonds. Future grants are currently unknown. We would seek Majority-In-Interest
airlines approval when scope and cost estimates are developed prior to construction. 
Financial Analysis and Summary 
Project cost for analysis              $25,872,000 
Business Unit (BU)                  Airfield Movement Area 
Effect on business performance     NOI after depreciation will increase due to inclusion of
(NOI after depreciation)             capital (and operating) costs in airline rate base. 
IRR/NPV (if relevant)                N/A 
CPE Impact                       $.09 in 2027 

ATTACHMENTS TO THIS REQUEST 
None 
PREVIOUS COMMISSION ACTIONS OR BRIEFINGS 
August 10, 2021  Commission briefing on sound insulation programs, acceleration and staff
recommendations 
August 10, 2021  The Commission authorized design for the Apartment Sound Insulation
Program 
December 15, 2020  Commission briefing on sound insulation programs, acceleration and
staff recommendations 

Template revised June 27, 2019 (Diversity in Contracting).

COMMISSION AGENDA  Action Item No. __8c__                              Page 6 of 6 
Meeting Date: December 14, 2021 
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. 








Template revised June 27, 2019 (Diversity in Contracting).