COMMISSION 
AGENDA MEMORANDUM                        Item No.          8c 
ACTION ITEM                            Date of Meeting      October 26, 2021 
DATE:     October 1, 2021 
TO:        Stephen P. Metruck, Executive Director 
FROM:    Tina Soike, Director Engineering Services 
Janice Zahn, Assistant Engineering Director, Construction Services 
Jeffrey Brown, Aviation Chief Operating Officer 
SUBJECT:  North Terminal Utilities Upgrade Project Phase 1 (#C800717) 
ACTION REQUESTED 
Request Commission authorization for the Executive Director to execute a Change Order to
Contract MC-0319240 North Terminal Utilities Upgrade Project Phase 1 (NTUUP) to replace an 
existing roll up door at Seattle-Tacoma International Airport in the amount of $12,490.97 and a
contract time extension of 89 calendar days. 
EXECUTIVE SUMMARY 
This change order requires the addition of eighty-nine (89) calendar days to the Contract
Duration. Commission action is required under the General Delegation of Authority because the
Change Order includes a time extension of more than sixty days (60). No additional project
funding is included with this request. 
Description of Change Order 
This change order authorizes installation of a new roll up door in lieu of reinstallation of the
existing 20+ year-old roll up door. It also revises the contract completion date to match the actual
completion date and settles all claims due to Port and Contractor impacts to the project schedule. 
Background 
This project was authorized for construction by the Commission on October 14, 2019. The project
installed the first phase of the north utility loop which replaces and extends the existing 50-yearold
undersized steam, condensate and chilled water supply and return piping from the Central
Mechanical Plant. The project will create a redundant interconnected piping loop when Phase 2
is completed. 
Phase 1 reached substantial completion on August 17, 2021 and is currently in project close out.
The project provided a new valve room and upsized piping from the Central Mechanical Plant to
the Concourse D Annex and North Satellite. 


Template revised September 22, 2016.

COMMISSION AGENDA  Item No. __8c__                                    Page 2 of 2 
Meeting Date: October 26,2021 
During construction, the contract scope included the removal and reinstallation of an existing roll
up door to excavate and install new piping to the room. Prior to reinstallation, it was discovered
the existing door would leave a 7" gap at the bottom. It was determined the existing door could
not be modified to close the gap and a new door is required.
While preparing the price proposal, the Port was notified by the contractor the lead time for the
new door was uncertain due to supply chain issues. Subsequently the contractor has obtained a
November delivery date. In lieu of extending the contract for over 180 days and compensating
the contractor for extended overhead due to the Port caused delay, the Port and Contractor
reached agreement for an 89 calendar day extension without any indirect time impact costs. The
Port would pay for only the direct cost of procuring and installing the new door. 
FINANCIAL IMPLICATIONS 
There is no additional funding being requested in this memo.
ATTACHMENTS 
None. 
PREVIOUS COMMISSION ACTIONS OR BRIEFINGS 
October 22, 2019  The Commission authorized the Executive Director to (1) advertise
and award a construction contract for Phase 1 of the North Terminals Utility Upgrade
project at Seattle-Tacoma International Airport: (2) employ a project labor agreement
(PLA); and increase authorization by $12,064,000 to total estimated cost of $40,000,000. 
September 12, 2017 - The Commission authorized the Executive Director to extend the
North Terminals Utilities Upgrade Project Early Work Mechanical Contract by adding 250
calendar days to the contract duration. 
June 28, 2016 - The Commission authorized the Chief Executive Officer to increase the
North Terminals Utilities Upgrade Project scope, budget, authorization, utilize Port crew
advertise and award a major construction contract for the Early Work Mechanical
Contract for an additional $7,271,000. 
April 28, 2015 - The Commission authorized the Chief Executive Officer to execute service
agreements and conduct studies, cost estimates, design and prepare construction
documents for the North Terminals Utilities Upgrade Project in the amount of $2,000,000. 



Template revised September 22, 2016; format updates October 19, 2016.