Northwest petrochemical projects have hit stumbling blocks across the region, but a big one on the north Puget Sound is still moving forward, and time is running out to stop it. Andeavor (formerly Tesoro) plans to expand its Anacortes oil refinery to add a petrochemical production facility to serve export markets. It’s a project that could pose serious risks for the Salish Sea, but the public has a limited opportunity to weigh in with written comments—from right now until November 1 at 4:30 pm.

A lesser-known liquid petrochemical, xylene, is the principal chemical precursor in the production of polyethylene terephthalate (PET), which is used for making plastic bottles, polyester fibers, food packaging, paint, rubber, solvents, and other products. It is created from a partially refined crude oil product called reformate that is often produced from light oil, such as Bakken shale oil, which yields particularly high levels of petroleum naphtha. The Anacortes facility would be capable of producing 15,000 barrels of xylene per day for export, primarily to Asia, representing roughly a 9 percent increase in total US xylene production.

Xylene is dangerous to public health. Short-term exposure to xylene is known to cause difficulty breathing, impaired memory, and delayed response to visual stimulus, among other issues. At very high levels of short-term exposure, people have died. Long-term exposure can lead to depression, insomnia, tremors, and worse.

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  • Xylene shipping also creates yet another spill risk for the Salish Sea, and xylene tanker mishaps have caused tremendous damage in the past, such as the 2007 spill on the Mississippi River. The Tesoro expansion would add up to five tankers per month navigating Fidalgo Bay and the surroundings water of the Salish Sea.

    Right now, Skagit County officials are deciding whether to approve a key Shoreline Permit for the project. Environmental advocates are asking the County to withhold issuing the permit until it completes a more thorough review of the project’s impacts, one that more fully considers offsite risks and the compounding dangers of petrochemical developments nearby.

    The public has just a few days more to weigh in. You can submit written comments by November 1 using the generic comment form here (be sure to include “Tesoro CPUP Shoreline Permit” in the subject line) or in-person at a hearing on Thursday, November 2 at 9:00 am at the Skagit County Commissioners’ Hearing Room, 1800 Continental Place in Mount Vernon, Washington.

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