2015-03-12

Hotel California

Vienoje žinomiausių ir turistų mėgstamiausių JAV valstijų jau ketvirtus metus tęsiasi sausra, todėl vandenį taupyti tenka itin griežtai. Tai labai nepatinka kanapių augintojams. Upės ir ežerai išsekę, kai kurie šuliniai tušti.  Vanduo tapo bene geidžiamiausia preke visoje Kalifornijoje.
Būna...

California is threatened with an impending fracking boom. But what is fracking, really? And what risks does it pose to the Golden State?  Why do we believe fracking is simply too risky to our water, air, wildlife and climate?


3. How does fracking contaminate our water?

Fracking routinely employs numerous toxic chemicals, including methanol, benzene, naphthalene and trimethylbenzene. About 25 percent of fracking chemicals could cause cancer, according to scientists with the Endocrine Disruption Exchange. Evidence is mounting throughout the country that these chemicals are making their way into aquifers and drinking water.

Water quality can also be threatened by methane contamination tied to drilling and the fracturing of rock formations. This problem has been highlighted by footage of people in fracked areas setting fire to methane-laced water from kitchen faucets. 
Fracking can also expose people to harm from lead, arsenic and radioactivity that are brought back to the surface with fracking flowback fluid. Fracking requires an enormous amount of water, and because fracking waste water contains dangerous toxins it generally cannot be cleaned and reused for other purposes. Especially during a historic drought, we cannot afford to permanently remove massive quantities of this precious resource from our state’s water supply.

4. How does fracking pollute our air?

Fracking can release dangerous petroleum hydrocarbons, including benzene, toluene and xylene. It can increase levels of ground-level ozone, a key risk factor for respiratory illness. The pollutants in fracking water can also enter our air when that water is dumped into waste pits and then evaporates. Air pollution caused by fracking may contribute to health problems in people living near natural-gas drilling sites, according to a study by researchers with the Colorado School of Public Health.

5. How does fracking worsen climate change?

Fracking and similar techniques often release large amounts of methane, a highly potent greenhouse gas that’s at least 86 times more effective at trapping heat than carbon dioxide over a 20-year period.

Fracking also allows access to huge fossil fuel deposits that were once beyond the reach of drilling. In California, rising oil prices are driving up interest in fracking on the Monterey Shale, a geological formation under the San Joaquin and the Los Angeles basins that may hold a large amount of recoverable shale oil.

Moreover, much of California's oil is dirty, heavy crude. The California Air Resources Board scores many of the state's oil fields as approximately as carbon intensive as oil from the infamous Alberta tar sands. As California strives to lead the fight to avoid a climate change catastrophe, why should we facilitate the release of carbon in billions of barrels of carbon-intensive oil now safely sequestered in our shale formations? We shouldn’t.

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2015-03-12 15:25
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