Deaerator (DA) and Condensate System
Upgrades
Joe Cook
AV F&I – Mech. Engineering Manager
Item No. 8c_supp
Meeting Date: November 11, 2025
Matthew Piccolo
AV PMG – Capital Project Manager
Action Requested
• Advertise, award, and execute a major works construction contract for the project
• Execute related project change orders, amendments, work authorizations,
purchases, contracts, and take other actions necessary to support and deliver the
project within the approved budget
• Authorization the use of Port of Seattle Crews and small works contracts to support
construction activities
• Authorize $11,056,000 for a total project cost not to exceed 14,656,000
2
Project Overview
The project replaces old heating
system components in SEA’s Central
Mechanical Plant (CMP) that supply
space heating and domestic hot water
throughout concourse areas.
3
• Install deaerator (DA) tank, steam
condensate tank, blowdown flash
tank
• Install new feedwater and
condensate pumps with energy-
efficient variable frequency drives
• Remove Boiler Room air handling
unit and three old air compressor
systems
Project Scope
4
Schedule
5
Milestone
Date
Commission Authorization for Design
Q2 2023
Commission Authorization Construction
Q4 2025
Advertise for Construction Bids
Q1 2026
Notice to Proceed
– DA & Condensate Tanks
Q2 2026
Substantial Completion
– DA & Condensate
Q3 2028
Budget
6
Cost Estimate Capital Expense Total
Project Budget
(Authorized April 2023)
$14,444,000 $212,000 $14,656,000
We are here:
100% Design
Commission Authorization
Cone of Certainty
7
QUESTIONS?
8
