Item No. 8a_ supp
Meeting Date: January 28, 2020
Flight Corridor Safety Program 2019
Seattle-Tacoma
International Airport

Flight Corridor Safety Program 2019
An ongoing Port of
Seattle program to
remove and replant trees
around Sea-Tac Airport
that have grown or will
soon grow into FAA-
designated flight
surfaces

2

Project Scope
Removal of current and future flight path obstructions from non-
Port properties and associated replanting of replacement trees
Pay fees to the Washington State Department of Transportation
(WSDOT) and local jurisdictions for them to perform replanting for
certain obstructions removed from their properties
Execute agreements, including property easements, with public
agency and private property owners for obstruction management
3

Environmental Best Management Practices


To date the program has replaced trees (3,684) at a ratio of over 4 times the
number removed (783)
4

Example Profile View: Obstacle Detail
174 Total
Obstacles

SurfaceSurface
ObstaclesObstacles

RunwayRunway




Composite Ground Contour
N
5

Outreach & Communications
Airmail                           WSDOT
Airport-specific listservs               Highline Schools
Connections                      Cities
Media advisory                    Private property owners
Online Open House                Hillgrove Cemetery
Highline Forum

6

Obstruction Locations-North



7

Obstruction Locations-South



8

Jurisdiction               Number of Obstructions
Port                                          6
WSDOT                           104
City of SeaTac
Public                                       46
Private                                      10
Subtotal                                   56
City of Burien
Public                                        0
Private                                       7
Subtotal                                    7
City of Des Moines
Public
1
Private
Subtotal                                    1
Total                                            174
9

Appendix


10

Project Schedule
Commission Design Authorization           2017 Quarter 1
Design Start                                  2017 Quarter 1

Commission Construction Authorization      2020 Quarter 1
Obstruction Removal Start                   2020 Quarter 1
Replanting Start                              2021 Quarter 1

11

Project Budget
COST ESTIMATE               Capital    Expense               Total
(WP: U00506)
Original estimate                         $0                $7,227,000        $7,227,000
Current change                          0               1,273,000        1,273,000
Revised estimate                         0                8,500,000         8,500,000
AUTHORIZATION
Previous authorizations                  $0               $2,605,000        $2,605,000
Current request for                        0                 5,895,000         5,895,000
authorization
Total authorizations, including              0                  8,500,000         8,500,000
this request
12

Project Risks
Reach access agreements with public agency and private property
owners
Potential delay to the removal of priority obstructions prior to
March 1, 2020 bird nesting period
Execution of Job Order Contract and local permits following the
Commission Authorization
Potential delay to the removal of priority obstructions

13