Encore les gaz de schiste

Orion L’excellente revue environnementale Orion a un article éclairant, plein d’arguments très solides sur les risques associés à l’extraction des gaz de schiste. À lire! en voici un extrait:

And nowhere in the U.S. is fracking proceeding more manically than Appalachia, which is underlain by the formation called the Marcellus Shale, otherwise referred to by the Intelligent Investor Report as “the Saudi Arabia of natural gas” and by the Toronto Globe and Mail as a “prolific monster” with the potential to “rearrange the continent’s energy flow.”

In the sense of “abnormal to the point of inspiring horror,” monster is not an inappropriate term here. With every well drilled—and thirty-two thousand wells per year are planned—a couple million gallons of fresh water are transformed into toxic fracking fluid. Some of that fluid will remain underground. Some will come flying back out of the hole, bringing with it other monsters: benzene, brine, radioactivity, and heavy metals that, for the past 400 million years, had been safely locked up a mile below us, estranged from the surface world of living creatures. No one knows what to do with this lethal flowback—a million or more gallons of it for every wellhead. Too caustic for reuse as is, it sloshes around in open pits and sometimes is hauled away in fleets of trucks to be forced under pressure down a disposal well. And it is sometimes clandestinely dumped.

By 2012, 100 billion gallons per year of fresh water will be turned into toxic fracking fluid. The technology to transform it back to drinkable water does not exist. And, even if it did, where would we put all the noxious, radioactive substances we capture from it?

HERE, THEN, are the environmental precepts violated by hydrofracking: 1) Environmental degradation of the commons should be factored into the price structure of the product (full-cost accounting), whose true carbon footprint—inclusive of all those diesel truck trips, blowouts, and methane leaks—requires calculation (life-cycle analysis). 2) Benefit of the doubt goes to public health, not the things that threaten it, especially in situations where catastrophic harm—aquifer contamination with carcinogens—is unremediable (the Precautionary Principle). 3) There is no away.

Et voici le clip de Gasland, le documentaire américain qui traite des impacts des gaz de schiste. Certaines régions aux US subissent ce phénomène depuis environ 5 ans:


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