AVIATION CAPITAL PLANNING &
PRELIMINARY DESIGN ACTION ITEM
July 23, 2019
Item No. ____ _3c ___
Meeting Date: July 23, 2019
Briefing overview
• Project Planning Process
• Near-Term Projects
• Projects Requiring Preliminary Design
• Glideslope Antenna Relocation
• Next Steps
1
2
Project Planning Process
• Master planning
- complete
– Campus wide, comprehensive planning
– Alternatives analysis for major plan elements
• Advanced planning
- in progress
– More detailed planning in focus areas of long-range plan and existing facilities
– Alternatives analysis within individual projects (e.g. options for configuring curbs
and functional areas for Second Terminal)
• Preliminary design
- current capital funds request
– Program development for individual projects
– Adequate detail required to transition projects to design
– Results in a Project Definition Document (PDD)
Near-Term Projects
3
Near-Term Projects
4
Design/construction period estimates for major projects
NOTE: Preliminary design precedes design phase shown above and is not depicted.
Commission authorization is required to proceed into design
5
1) Westside Maintenance Campus
2) Aircraft Rescue and Fire-
Fighting (ARFF) Relocation
3) Roadway Improvements
4) Taxiway A/B Extension
5) Main Terminal North GT Lot
Projects Requiring Preliminary Design
1
2
4
5
3
Design/construction period estimates
6
Glideslope Antenna Relocation
• Taxiway A/B project requires relocation of Runway 34R glideslope antenna
– Opportunity to adjust slope angle and increase aircraft elevation on approach
– Sea-Tac Stakeholder Advisory Round Table (StART) recommendation
• Relocate to potentially permanent location (i.e. consistent with Taxiway A/B project)
• Attempt to obtain a 3.1˚ glideslope angle
• Look for ways to expedite the project
– Begin design (design at risk prior to conclusion of environmental review)
– Initiate procedure development as soon as possible
– Design/construction by FAA with reimbursement by the Port
7
Next Steps
• Following Commission authorization…
– Utilize $10M capital funds to conduct preliminary design
• Projects currently identified as requiring preliminary design in the short term
– Westside Maintenance Campus
– Air Rescue and Fire-Fighting (ARFF) Facility
– Taxiway A/B Extension
– Main Terminal North GT Lot
– North Airport Expressway Improvements
• Other projects to be identified through additional advanced planning
– Procure and execute professional services contracts
– Enter into Reimbursable Agreements with FAA
(Glideslope)
