PORT OF SEATTLE 
MEMORANDUM 
COMMISSION AGENDA  POLICY & STAFF BRIEFING 
Item No.        6a 
Date of Meeting   February 24, 2009 

DATE:    December 22, 2008 
TO:      Mr. Tay Yoshitani, Chief Executive Officer 
FROM:    Elizabeth Leavitt, Director, Aviation Environmental Programs 
Russ Simonson, Senior Environmental Program Supervisor 
Michael Lufkin, Senior Environmental Strategy Manager 
SUBJECT:  A report to the Commission regarding progress made to fulfill the actions requested in
motion of the March 25, 2008 Regular Commission Meeting addressing Support of
Federal and Local Initiatives to Address Aviation Greenhouse Gas Emissions. 
PURPOSE 
The purpose of this presentation is to provide the Port of Seattle Commission with an update on
progress related to the three motions made at the March 25, 2008 Commission meeting in regard
to the release of Seattle-Tacoma International Airport's greenhouse gas emissions inventory. 
BACKGROUND 
At the March 25, 2008 Port of Seattle Commission meeting, the results of Seattle-Tacoma
International Airport's greenhouse gas inventory were presented. Following the briefing, the
Commission passed a motion which supports federal efforts to reduce aircraft emissions and
directs staff to establish targets for emission reduction at the airport. 
The Commission's action calls for increased federal action in the areas of airspace protocols that
help reduce fuel consumption and increased funding for research into aircraft propulsion. In
addition, one of the motions supports California's call for the EPA to develop global warming
regulations for aircraft. 
Several initiatives are directed specifically toward reducing local airport-related emissions.
Additionally, Port staff members were directed to work in collaboration with aviation partners to
set measurable targets for emission reductions by the end of 2008; if no targets were developed,
the Commission will consider carbon offsets or fees. Finally, staff was directed to conduct
greenhouse gas inventories at Sea-Tac Airport every five years to measure the effectiveness of
emissions-reduction efforts.

COMMISSION AGENDA 
Tay Yoshitani, Chief Executive Officer 
December 22, 2008 
Page 2 
PROGRAM STATUS 
This presentation updates the Commission on progress made on the motion, recommended
greenhouse gas reduction goals, programs and projects to reduce greenhouse gas emissions at the
airport. 
ENVIRONMENTAL BENEFITS 
Early actions to track, manage, and reduce greenhouse gas emissions at Sea-Tac through 
programs, operations, and services as they pertain to, and impact, the global climate change
aspects of operating an airport support our organization's and community's collective
environmental sensibilities. The greenhouse gas inventory report, and our efforts to fulfill the
Commission's greenhouse gas motions, collectively supports our strategy to exhibit
environmental stewardship through our actions.