Item No. 8a_supp 
Meeting Date: July 10, 2018 
Condominium Sound Insulation
Project 

1

Eligibility 
Project was identified in the 2014 Part 150 Noise and Land Use
Compatibility Study 
Inside the Noise Remedy Boundary 
Built before 1986 in Des Moines, 1987 all other areas 
Must pass an FAA required noise audit to qualify 
45 dB interior noise level or higher 
Achieve at least a 5 dB reduction with renovations 


2

Noise Remedy Boundary 
(Determines Eligibility) 




3 complexes including 240 units potentially eligible 
3

Project Elements 
No cost to homeowners - paid for by FAA and Airport revenues 
Scope of Work: 
Sound Rated Windows 
Sound Rated Exterior Doors 
Forced Air Ventilation 
May include other items identified by an architect that would reduce noise 
Avigation Easement 
Grants the Port air rights; filed permanently with King County on the parcel 
Required by state law 
Port's asset in exchange for the cost 


4

Contracting 
Project-specific design contract including
acoustical testing and construction support 
3 construction contracts (one for each
complex) 
FAA requirements for encouraging DBE
participation 
5

Project Funding 
$5,000,000 - Current Request 
$15,000,000 Construction - Future request 
Project is voluntary so some complexes may
not participate 
80% of eligible costs will be funded by FAA
Grant 
6

Previously Completed Sound Insulation 
1985-2017 
9400 Single-Family Homes 
One Private School 
One Convalescent Center 
Two Places of Worship 
14 Buildings at Highline College 
5 Condominium Complexes, 246 Units 
8 Schools at the Highline School District (funding assistance) 
Approximately $300 Million Spent on Sound Insulation To Date 
7

Current and Future Sound Insulation 
Current 
2018-2020          Single-Family sound insulation continues  Approximately 50 homes 
2018-2019          Highline School District construction of Des Moines Elementary School 
Future 
2019-2021          Condominium sound insulation for eligible complexes 
2019-2020          Highline School District construction of Highline High School 
2022-2023          Apartment sound insulation for 1 pilot project 
2023               Places of worship sound insulation of 1 pilot project 

Timelines are estimated and depend on FAA & Port funding eligibility 
8

Condominium Anticipated Project Timeline
For First Complex 
2018 Q4 
Finalize procurement and start design visits 
2019 Q1 
Obtain Commission authorization for construction contracting and funding 
2019 Q2 
Contracting for construction 
2019 Q3 
Start construction 
2020 Q1 
Construction complete for first complex 
9

Continued Engagement with Federal Partners 
Working to ensure continued federal funding for Highline Public Schools noise
insulation 
Encouraging swift hiring of newly funded FAA community engagement officers 
Providing technical assistance on Puget Sound Congressional delegation's noise
related legislation and amendments 
Tracking progress of relevant federal studies and legislation 


10

Questions? 

11