The Port of Seattle has released the first ever Airport Air Emissions Study called The Greenhouse Gas Emissions Inventory. The study details the nature of air emissions both in and around the airport as well as emissions calculated for aircraft leaving our local area. The media was given a behind the scenes tour of secure areas of the airport. The plans for environmental remediation include gate electrification (supplying power and preconditioned air to aircraft at each gate thus saving jet fuel), and efforts to work with the Airport's airline business partners and other companies to lower the amount of greenhouse gas emissions.

The Port of Seattle's Aviation Division represent 4.8% of the total air emissions associated with the airport, while the public's portion is 11.4%; these activities include ground access and support vehicles, facility sources (such as lighting, heating, air conditioning, etc.), as well as public and employee transportation to/from the airport. As expected, the highest source of air emissions - 83.8% - comes from aircraft operations, which is consistent with national and international estimate figures.

A fact sheet summary of the report is avaiable here: www.portseattle.org/downloads/community/environment/greenhousefactsheet.pdf