From:            sarah shifley
To:                Commission-Public-Records
Subject:           [EXTERNAL] [Possible Scam Fraud]Public Comment for 10/27/2020 Commission Regular Meeting
Date:              Saturday, October 24, 2020 6:46:55 PM

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My name is Sarah Shifley. I am a volunteer with the 350 Seattle Aviation Team and am
offering these comments on the Port's proposed 2021 legislative agenda.

In a recent press release, Commissioner Felleman reminded us that we're in an "urgent
time for the climate and our community's health." He's rightwe now have nine years
to cut our emissions in half to avoid even more catastrophic impacts of climate change.

Looking at the legislative agenda, it appears that when it comes to aviation, the Port's
solution is to push for aviation biofuels. A recent press release from the Port presented
a goal of having 10 percent of fuel used at Sea-Tac be a biofuel blend. However, a little
simple math quickly shows that, even if this goal is met, aviation biofuels will not reduce
aviation's impact on our climate and communities from what it is today. Moreover,
focusing on biofuels in this "urgent time" only distracts from real solutions and while we
treat steadily further into crisis.

The Port's goal is to have 10 percent of aviation fuel used at Sea-Tac be biofuel by 2028.
If the Port is correct that biofuel emits 50-80 percent less CO2 and it meets its goal, then
CO2 emissions from fuel pumped at Sea-Tac in 2028 would be 5 to 8 percent lower than
they otherwise would be. However, the Port is concurrently pushing for expansions that
would double the amount of airplane traffic at Sea-Tac in this same time frame, which
would double overall CO2 emissions. So all told, even if the Port reaches its goal, CO2
emissions from fuel pumped at Sea-Tac would continue to quickly increase between now
and 2028, and then beyond.
Additionally, it is now undisputed that aviation emissions warm the climate at
approximately three times the rate of that associated with aviation CO2 emissions alone
(a fact which the Port continually fails to acknowledge). It is unclear how much the

biofuels being promoted by the Port would do to eliminate the non-CO2 warming
impacts of aviation emissions.

Deployment of biofuels would also do nothing to address the disparate impact aviation
noise pollution has on communities under flight paths. As you well know (because I
testified about it at your last meeting), noise pollution can lead to countless life-
threatening health conditions, higher rates of depression and anxiety, and lower
learning outcomes.

Instead of investing time and money in aviation biofuels, the Port needs to focus on
actions that can actually reduce aviation emissions, like limiting demand for aviation and
supporting investments in truly sustainable forms of transportation.
Thank you,
Sarah