— from Barbara Bentley —

Don’t be placated by BNSF assertion that they can “control” coal dust from open-car trains bringing coal from Wyoming to Bellingham (cited on Orcas Issues in a recent extract of a longer article by Floyd McKay).

Projected Coal ExportsWell, they may be able to reduce the “escape” of coal dust by 85%, but Peabody Coal is planning to export 53 million tons of coal per year through the Cherry Point. And, as you can see in the graph, the amount of coal being delivered is going to go up — and go up much faster at Cherry Point than at North America’s current largest coal terminal at Canada’s Roberts Bank. It looks to me like that’s still a lot of dust.

Nerd alert

Let’s do the math. The plan for the coal export terminal at Cherry Point estimates that 8 to 12 trains, made up of 100 to 125 cars will unload coal each day. In BNSF’s own study in 2010 on dust suppressants, they found that dust “escape” could be reduced by 73% to 93% depending on the brand of suppressant tested. (These “topical treatments” are sprayed on the top of a load in a car; “body treatments” had no effect.) From these data, we can create a best-case, worst-case, and something-in-the-middle-case scenarios.

........................Best Case .....Something in the Middle.....Worst Case
Trains Per Day..............8....................10....................12
Coal Cars Per Train.......100...................115...................125
Dust Lost Per Car (lbs)...500...................800..................2000

Now we can calculate the amount of dust “escaping” from the coal transport per year under each of the scenarios.

........................Best Case .....Something in the Middle.....Worst Case
Dust Lost Per Year
(tons) w/suppressant.....5,110..................25,185.............147,825

Even in the “best” case scenario, open-car coal trains would deposit more than five thousand tons of coal dust during their journeys across Washington. And, while I hope that we never see the worst-case scenario, even the something-in-the-middle is an astonishing twenty five thousand tons (yes, tons!) of coal dust “escaping” into the environment. God forbid if greed overcomes social responsibility and we have to face the worst case scenario.

That’s not the end.

Unfortunately, the train cars are not the end of the road. Each of those train cars must dump their loads at the docks where the coal is transferred to the bulk-carrier ships. Now the “topping agent” is no longer on top, so dust will again become airborne as the coal is moved from train cars to storage piles, from storage piles to conveyors, from conveyors to the ship’s hold. And this dust is not spread along a thousand mile journey from Wyoming to Bellingham, but is “escaping” at a point source on the shore of the Salish Sea. Depending on the dust suppressant plans for the terminal, those twenty five thousand tons of dust could blanket the San Juans.

As magical as Orcas Island is, I don’t want even a ton of pixie dust blanketing us. Can you imagine what twenty five thousand tons of coal dust would be like?

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