COMMISSION 
AGENDA MEMORANDUM                        Item No.          6d 
ACTION ITEM                            Date of Meeting      March 24, 2020 
DATE:     March 16, 2020 
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:  Residential Sound Insulation Program Consultant Services C200094 
Amount of this request:               $4,600,000 
Total estimated project cost:         $14,535,000 
ACTION REQUESTED 
Request Commission authorization for the Executive Director to fund and execute a consulting
contract to provide residential sound insulation program management support, design and
construction management for up to 60 single-family homes within the current Airport noise
remedy boundary at Seattle-Tacoma International Airport for an estimated value of $4,600,000. 
EXECUTIVE SUMMARY 
As part of the Port's long-termcommitment to communities surrounding the airport, it is
necessary to offer sound insulation for eligible single-family residential homes within the
current Federal Aviation Administration (FAA) Airport Noise Compatibility (Part 150) remedy
boundary. Using a consultant to manage the work and separate Job Order Contracts (JOC) work
orders for construction services, this project will provide sound insulation renovations for an
estimated sixty (60) homes located within the boundary. These renovations typically include
new windows, doors, storm doors, and ventilation for each unit in order to meet the FAA
standard of a 45 decibel (dB) interior noise level. Approximately 80 percent of eligible costs may
be funded by FAA Airport Improvement Program (AIP) grants. Funding for a previous contract 
used from 2018 to 2020 will be fully utilized and a new contract is needed in order to progress
with the work as new homeowners continue to apply for the program. The consulting firm
hired will provide project design, principal construction management, quality control, project
intake, homeowner outreach, project documentation, acoustical testing, and FAA AIP grant
funding documentation. 
JUSTIFICATION 
Resolution No. 3683 was adopted by the Commission on October 22, 2013. This resolution
included all recommendations from the Part 150 Study including sound insulation for single-

Template revised January 10, 2019.

COMMISSION AGENDA  Action Item No. 6d                                  Page 2 of 5 
Meeting Date: March 24, 2020 
family residential homes. The goal of this program is to meet the requirements of Resolution
No. 3683 to conduct an ongoing noise remedy program. 
Diversity in Contracting 
Since the project will be partially funded with FAA AIP grants, the Port will follow the United
States Department of Transportation's Disadvantaged Business Enterprise (DBE) program
requirements. Certified DBE goals will be administered in accordance with CFR 49 Part 26 by
the Diversity in Contracting Department.
DETAILS 
The Port will provide funding, staff, consultant and contractor oversight, and administration of
the program to provide program management, design and construction management for the
sound insulation of eligible single-family residential dwellings within the Noise Remedy Program
Boundary. The Airport Noise Program office estimates that there are up to 60 homes (out of the
approximately 140 homes potentially eligible) that will participate in the program. 
The firm procured will provide program management support and will have experience in FAA
sound insulation  work. The Port will provide ultimate oversight  of the residential sound
insulation program. The pre -construction design and testing of potentially eligible homes will
define the scope of this project and will be used to develop cost estimates prior to construction. 
The consultant hired under this contract will identify and qualify eligible homes based on Port
and FAA criteria and homeowner participation. In return for sound insulation, all homeowners
are required to provide the Port with an Avigation Easement which will be recorded on the
parcel  permanently  with  King  County.  An  Avigation  Easement  provides  the  Port  with
protections for free and unobstructed passage of aircraft over the parcel and becomes the
Port's asset. 
Scope of Work 
The hired firm will provide good faith regulated materials surveys, design, principal construction
management, quality control, project intake, homeowner outreach, project documentation,
acoustical testing, and FAA AIP grant funding documentation. Typical design to include: 
(1)   Sound Transmission Class (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 

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

COMMISSION AGENDA  Action Item No. 6d                                  Page 3 of 5 
Meeting Date: March 24, 2020 

ADDITIONAL BACKGROUND 
For a home to be eligible, it must be located within the FAA approved Noise Remedy Boundary
and has to have been built prior to the establishment of local jurisdictional building codes that
were enacted to either meet or exceed the FAA standards for noise reduction. These dates
include December 3, 1986, for the City of Des Moines and September 6, 1987, for all other
areas of King County. In 2012 the FAA implemented a requirement for all FAA-funded sound
insulation projects for acoustical qualification based on a pre- and post- noise audit. Each
building must be tested to ensure the interior noise level is at least 45 A-weighted decibels (dB) 
DNL with a minimum reduction of 5 dB that can be achieved through installing sound
insulation. Some homes may not qualify under this new requirement. 
Schedule 
Activity 
Commission design authorization               2020 Quarter 1 
Consultant services contract finalized             2020 Quarter 4 
Design start                                       2020 Quarter 4 
Construction start                                2021 Quarter 1 
Cost Breakdown                                     This Request           Total Project 
Design & Program Management                       $3,000,000           $9,435,000 
Construction Management                            $1,600,000            $5,100,000 
Total                                                          $4,600,000             $14,535,000 
ALTERNATIVES AND IMPLICATIONS CONSIDERED 
Alternative 1  Do not continue the program 
Cost Implications: $0 
Pros: 
(1)   No Port expenditures 
Cons: 
(1) Not implementing the sound insulation project could reduce the Port's credibility in
the community and would not honor our commitment to the Part 150 Study and
Commission Resolution 3683 
(2) Could impact the Port's ability to leverage available AIP funds 
This is not the recommended alternative. 


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

COMMISSION AGENDA  Action Item No. 6d                                  Page 4 of 5 
Meeting Date: March 24, 2020 
Alternative 2  Defer the program until a later date 
Cost Implications: Assumed a four-year delayed start with 5 percent per year cost increase,
total project would cost an extra $2,900,000 
Pros: 
(1)   No Port expenditures until 2024 
Cons: 
(1)   Would be approximately $2,900,000 more expensive in the long term 
(2) Delaying the noise remediation project could reduce the Port's credibility in the
community as we would not honor our commitments in a timely manner 
This is not the recommended alternative. 
Alternative 3  Continue sound insulation of single-family residential homes as described above 
Cost Implications: $14,535,000 
Pros: 
(1)   Meets commitment to noise remediation in the community in Commission Resolution
3683 
(2)   Provides a direct community benefit to reduce noise impacts from aircraft operations
at the airport 
(3)   Leverages available AIP funding and FAA financial contribution to the project 
Cons: 
(1)   Would add additional contracting with the use of a project management firm 
(2)   The Port would be one step removed from the day-to-day implementation of the
project 
This is the recommended alternative. 

FINANCIAL IMPLICATIONS 
Cost Estimate/Authorization Summary               Capital        Expense           Total 
COST ESTIMATE 
Original estimate                                $12,312,000      $2,223,000     $14,535,000 
Budget change                                $2,223,000    ($2,223,000)             $0 
Revised estimate                              $14,535,000              $0     $14,535,000 
AUTHORIZATION 
Previous authorizations                         $14,535,000               $0     $14,535,000 
Current request for authorization                         $0               $0               $0 
Total authorizations, including this request      $14,535,000               $0     $14,535,000 
Remaining amount to be authorized                    $0             $0             $0 

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

COMMISSION AGENDA  Action Item No. 6d                                  Page 5 of 5 
Meeting Date: March 24, 2020 

Annual Budget Status and Source of Funds 
The Noise Remediation for the Single-Family Homes Insulation (CIP C200094) was included in
the 2020-2024 capital budget and plan of finance with a total capital budget of $7,885,000. A
budget increase of $4,457,000 will be transferred from the Aeronautical Reserve CIP (C800753)
resulting in zero net change to the Aviation capital budget. This increase brings the CIP total to
the amount authorized by the Commission on October 11, 2016. Although never guaranteed,
the Port anticipates that up to 80% of grant eligible costs will be funded with AIP grants.
Additional funding sources will include the Airport Development Fund and future revenue
bonds. 
Financial Analysis and Summary 
Project cost for analysis              $14,535,000 
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                        $0.01 - $0.02 in 2022, if grants are not received 
Due to the use of grants, approximately 80% of the costs are estimated to be excluded from the
airline rate base.  Costs that are not paid by grants will be recovered in the airfield movement
area cost center through landing fees. 
PREVIOUS COMMISSION ACTIONS OR BRIEFINGS 
February 25, 2020  The Commission was briefed by Airport Noise Programs staff and
presented an option for accelerating the Residential Sound Insulation efforts that are
currently in progress or planned for the near future. 
October 11, 2016  The Commission authorized contracting for Sound Insulation Architect &
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 Study Update for Seattle-Tacoma
International Airport. 



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