COMMISSION 
AGENDA MEMORANDUM                        Item No.          8f 
ACTION ITEM                            Date of Meeting     December 13, 2022 
DATE:     November 15, 2022 
TO:        Stephen P. Metruck, Executive Director 
FROM:    Mike Tasker, Director Aviation Maintenance 
SUBJECT:  Chiller 6 Repairs – Irregular Bid 
Amount of this request:                       $0 
Total estimated project cost:            $500,000 
ACTION REQUESTED 
Request Commission authorization for the Executive Director to award and execute a Major
Construction contract to the low bidder for an irregular bid outcome with only one bid submitted.
There is no funding associated with this request and the project is currently authorized for
construction with a total estimated cost not to exceed $500,000. 
SUMMARY 
This request is asking for authorization to proceed with awarding and executing a Major
Construction contract on an irregular bid as required by Resolution No. 3605 Paragraph 4.2.3.4.
Only one bid was received in response to the construction advertisement which qualifies the bid 
as irregular. The Engineer’s estimate was $332,596 (excluding WSST) and the bid received was 
$319,255 (excluding WSST) which represents a potential construction cost savings of $13,341.
Chillers provide cold water for the HVAC systems, which in turn provide cool air for critical
equipment, planes, passengers, tenants, and employees throughout SEA. Chiller 6 has failed to
such an extensive level that the existing maintenance contract would not have funding capacity
to effect repairs. It is for this reason that we are asking for specific funding to repair this asset
using Major Construction contracting. In 2021, a quote was prepared for anticipated repairs and
an expense budget line item was requested, and approved, for the 2022 budget in the amount
of $150,000. In early 2022, additional repairs were identified that were not previously accounted
for. The total anticipated cost to repair Chiller 6 has increased substantially to $500,000. There
may still yet be other unknowns with this type of work that won’t truly be discovered until the
asset is disassembled. The cost will now be incurred in 2023. While this is not included in the
2023 operating budget, Aviation will strive to absorb this necessary repair within the approved
budget. 
Chiller 6 at SEA has not been operational for approximately two years. This is one of eight chillers
at SEA and provides roughly 10% of total capacity, all of which is critical to passenger comfort.
Having all chillers available allows for resiliency during peak cooling season. In addition, Facilities

Template revised April 12, 2018.

             COMMISSION AGENDA – Action Item No. 8f                                   Page 2 of 2 
December 13, 2022 
& Infrastructure is upgrading the chiller controls on other chillers and Chiller 6 is part of that
upgrade. This chiller must be operational to complete the project work and is sequenced to be
upgraded last to allow time for repairs on Chiller 6 to be completed. 
PREVIOUS COMMISSION ACTIONS OR BRIEFINGS 
August 9, 2022 – The Commission authorized execution of MC contract 
There are no attachments to this memo. 















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