COMMISSION 
AGENDA MEMORANDUM                        Item No.          6e 
ACTION ITEM                            Date of Meeting      March 24, 2020 
DATE:     February 4, 2020 
TO:        Stephen P. Metruck, Executive Director 
FROM:    Arlyn Purcell, Director Aviation Environment and Sustainability 
Stan Shepherd, Manager Airport Noise Programs 
Wayne Grotheer, Director Aviation Project Management 
SUBJECT:  Villa Enzian Condominium Sound Insulation Construction C200095 
Amount of this request:               $2,438,000 
Total estimated project cost:         $20,000,000 
ACTION REQUESTED 
Request commission authorization for the Executive Director to construct, advertise, and award
of a major works contract to provide residential sound insulation construction for the Villa
Enzian Condominiums in Des Moines near the Seattle-Tacoma International Airport in an
amount not to exceed $2,438,000 of a total project cost of $20,000,000. 
EXECUTIVE SUMMARY 
As part of the Port's long-termcommitment to communities surrounding the airport, it is
necessary to offer sound insulation for eligible properties within the current Federal Aviation
Administration (FAA) Airport Noise Compatibility (Part 150) noise remedy boundary. In order to
complete this work, the Port has established a project specifically for the three potentially
eligible condominiums within the boundary. This request would allow a Major Works Contract
for construction of the first of three potentially eligible condominium complexes. This contract
will provide sound insulation for 28 units at the Villa Enzian Condominiums located at 1208
South 216th St. in Des Moines. The remaining two condominium complexes will be sound
tested at a later date to determine eligibility. 
Authorization for this work includes the installation of new Sound Transmission Class (STC) 
rated windows, doors, and storm doors, as well as supplemental ventilation for each unit to
meet the FAA standard of a 45 decibel (dB) DNL interior noise level. The Villa Enzian project is
currently at 100% design and the preliminary estimate for this scope of work is $2,438,000. The
King County Housing Authority (KCHA) confirmed that the Villa Enzian project is not in the
Weatherization Program jurisdiction. Port staff will continue to work with KCHA to seek
opportunities to collaborate on sound insulation and weatherization on future projects. We will
return to the Commission to request funding for the remaining two condominium complexes at
a later date. 

Template revised January 10, 2019.

COMMISSION AGENDA  Action Item No. 6e                                   Page 2 of 5 
Meeting Date: March 24, 2020 

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
condominium complexes. 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 up to 80% of the project could potentially be 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 design and Project/Construction Management for the sound insulation
of  the  Villa  Enzian  Condominiums.  The  construction  company  procured  will  provide
construction, construction oversight and quality control for the sound insulation renovations.
For sound insulation treatments to work properly, the windows and doors must remain closed.
The air becomes stagnant and the use of a positive ventilation system is required to circulate
fresh air throughout the home. 
In return for sound insulation, the Homeowners Association (HOA) and each homeowner are
required to provide the Port with an Avigation Easement which will be recorded permanently
on the parcel 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 company hired will provide construction, construction oversight and quality control. 
Construction work will include: 
(1)   STC rated solid core doors 
(2)   STC rated windows 
(3)   Storm doors 
(4)   Positive air ventilation or air conditioning as required 
(5)   Other associated work determined to be necessary by the architect to install the
above items or to meet building and fire code 
(6)   Regulated  materials  abatement  (asbestos  and  lead)  necessary  to  facilitate  these
installations 


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

COMMISSION AGENDA  Action Item No. 6e                                   Page 3 of 5 
Meeting Date: March 24, 2020 
Schedule 
Activity 
Design start                                     2019 Quarter 4 
Construction start                              2020 Quarter 4 
In-use date                                     2021 Quarter 3 

Cost Breakdown 
Villa Enzian          Remaining Two                     Total 
Complexes 
Design                            $822,000             $4,285,000             $5,107,000 
Construction                    $2,438,000            $12,455,000            $14,893,000 
Total cost                          $3,260,000             $16,740,000             $20,000,000 
ALTERNATIVES AND IMPLICATIONS CONSIDERED 
The two other alternatives being considered prior to the February 25, 2020 Commission
Briefing by Airport Noise Programs would require significantly longer schedule duration and/or
been costlier. Based on the direction provided by the Commission on February 25, 2020 to
accelerate all active and planned residential sound insulation programs, there are at present no
other realistic options other than to proceed with the recommended alternative for this scope
of work as described.
Alternative 1  Authorize noise remediation of Villa Enzian Condominiums as described above 
Cost Implications: $2,438,000 (current construction estimate). 
Pros: 
(1)   Meets  commitment  to  noise  remediation  in  the  community  per  Commission
Resolution 3683 
(2)   Provides a direct community benefit to reduce noise impacts in residential properties
from aircraft operations at the airport 
(3)   The use of a Major Works Contract allows more opportunities for certified DBE
contractors and supplier participation 
(4)   The project is currently at 100% design 
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. 6e                                   Page 4 of 5 
Meeting Date: March 24, 2020 
FINANCIAL IMPLICATIONS 
Cost Estimate/Authorization Summary               Capital        Expense           Total 
COST ESTIMATE 
Original estimate                                $24,000,000               $0     $24,000,000 
Budget decrease                             ($4,000,000)              $0    ($4,000,000) 
Revised estimate                               $20,000,000              $0     $20,000,000 
AUTHORIZATION 
Previous authorizations  Design Services        $5,107,000              $0      $5,107,000 
for 3 condominium complexes 
Current request for authorization  Major        $2,438,000              $0      $2,438,000 
Works Contracting for Villa Enzian 
Total authorizations, including this request       $7,545,000               $0      $7,545,000 
Remaining amount to be authorized --         $12,455,000              $0    $12,455,000 
Major Works Contracting for remaining 2
Condominium Complexes 
Annual Budget Status and Source of Funds 
The Noise Remediation for three Condominium Complexes (CIP C200095) was included in the
2020-2024 capital budget and plan of finance with a total capital budget of $20,000,000. FAA
AIP Grant funding is currently not available for this project. However, the Port anticipates that
80% of the grant eligible costs will be funded with future grants, though the timing of the grants
is not known or guaranteed. Additional funding sources will include the Airport Development
Fund and future revenue bonds. The project cost estimate remains a rough estimate due to the
uncertainties relating to the scope and cost. 
Financial Analysis and Summary 
Project cost for analysis              $20,000,000 
Business Unit (BU)                  Airfield Movement Area 
Effect on business performance    NOI after depreciation will increase 
(NOI after depreciation) 
IRR/NPV (if relevant)                N/A 
CPE Impact                        $0.05 in 2021 (less if grant funding is received) 
Future Revenues and Expenses (Total cost of ownership) 
N/A 
ATTACHMENTS TO THIS REQUEST 
(1)   Presentation slides 

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

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

PREVIOUS COMMISSION ACTIONS OR BRIEFINGS 
February 25, 2020  Port staff briefed the Commission on the current status of Airport Noise
Programs and presented an option to accelerate the Residential Sound Insulation
projects already underway or planned for the future. 
July 10, 2018  The Commission approved $5,107,000 to hire a firm to provide architecture
and engineering services for the sound insulation of condominium complexes near
Seattle-Tacoma International Airport.
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).