Studying fracking's effects, up close and personal

Studying fracking’s effects, up close and personal
In the verdant hill country of northeast Pennsylvania, thousands of acres of onetime farmland are being leveled to host large-scale hydrofracking operations.

Ten years ago, hydraulic fracturing barely existed. Today 45,000 fracked wells produce natural gas, providing energy for millions of homes and businesses, and nearly a quarter of the nation's electricity. But scientists are far behind in understanding how this boom affects people near wells. Geochemists Beizhan Yan and James Ross of Columbia University's Lamont-Doherty Earth Observatory are trying to fill in this gap in rural northeastern Pennsylvania, where thousands of fracking operations have taken over formerly quiet hilltops, farms and back roads. With new wells being drilled all the time, Yan and Ross are recruiting nearby homeowners to help them test groundwater and air for potential toxins before, during and after fracking. University of Pennsylvania medical researchers studying the region have already shown that people living in heavily fracked areas have been visiting hospitals increasingly for skin, respiratory and cardiovascular ailments since the boom began in 2007. But they cannot say whether this is linked to fracking, and if so, to which of the many substances it might introduce into the environment. Yan and Ross hope to help provide that information. This photo essay shows their work over one day this summer.

Hydrofracking involves leveling out large areas with crushed stone, bringing in acres of infrastructure and heavy equipment, then drilling deep into shale layers below and injecting millions of gallons of chemical-laced water and sand to crack open gas reserves there. Each fracked well requires thousands of truckloads of rock, sand, water, chemicals and machinery; this brings diesel fumes, dust and noise. (A Lamont student recently counted 30 big rigs entering one site in just an hour.) Due to a legal loophole, the U.S. Environmental Protection Agency (EPA) does not regulate fluids; in fact, in most places, even their compositions remain secret. But studies have show they can contain volatile formaldehyde, benzene or some 1,000 other substances, many of them known health hazards if leaked into air or water. Drilling also brings up dangerous natural products from deep gas-bearing shales, including salts, heavy metals and radioactive elements. Then there is the gas itself, mostly methane, which can leak from wellheads, pipes and valves into air or water. EPA estimates that leakage bleeds off 1 to 8 percent of production.

The effects are so far known mainly through a smattering of incomplete research and sometimes uncertain anecdotes. There is a film documentary showing a flaming Colorado kitchen faucet attributed to methane leakage; a court judgment this year awarding a Texas family $2.9 million from a company said to have poisoned them with air pollution. Other homeowners have brought complaints, but these are generally settled off the public record. The EPA itself has started a somewhat belated nationwide study of fracking's impacts on drinking water, but a draft is not expected until late 2014. Overall, funds for studies have remained thin. So for now, discourse on the subject is largely a war of rhetoric between energy companies who say fracking is generally harmless, and opponents who say it's not. People living near wells are caught in the middle, often not knowing what to think. "It's important to get the data, so everyone can consider this objectively," says Yan.

  • Studying fracking’s effects, up close and personal
    Geochemist Beizhan Yan of Columbia University’s Lamont-Doherty Earth Observatory is studying the environmental effects. His vest carries sensors to record air quality and noise levels as he walks.
  • Studying fracking’s effects, up close and personal
    Volatile chemicals and gas, as well as hazardous natural substances from deep underground can reach air or water if a well is not working properly. Here, tanks at a newly drilled site await use.
  • Studying fracking’s effects, up close and personal
    Setting up each well requires thousands of truckloads of material and machinery. Here, workers assemble pipe at a new well.
  • Studying fracking’s effects, up close and personal
    The well supplying Heaney’s water is just downhill of her house; Yan will test it before any drilling starts, then during and after. Tests will cover dozens of substances including methane, various metals and radioactive radium.
  • Studying fracking’s effects, up close and personal
    Next stop: the home of John Michael Beck, a now retired vocational counselor who built his place on four remote acres in 1985. In his spare time, he raised beef cattle, using hay from the next-door neighbor’s field.
  • Studying fracking’s effects, up close and personal
    Lamont geochemist James Ross assembles an air sampler in an upstairs window of Beck’s house. It will take background readings for a couple of weeks, before drilling starts.

Studying fracking’s effects, up close and personal
A tank built to hold water for fracking testifies to the massive nature of the development coming to dominate much of the countryside in this area.

Explore further

Another concern arises over groundwater contamination from fracking accidents

More information: "EPA's Study of Hydraulic Fracturing for Oil and Gas and Its Potential Impact on Drinking Water Resources" is available online: www2.epa.gov/hfstudy
Citation: Studying fracking's effects, up close and personal (2014, September 5) retrieved 22 October 2019 from https://phys.org/news/2014-09-fracking-effects-personal.html
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Sep 07, 2014
The article is not accurate. Since 1948, over 1 MILLION oil and gas wells have been fracked, and a lot of them are in the US. It is in truth a very common practice and in all that time there is only one water well that might have been contaminated by a fracked well. That well was in Wyoming and the fracked well was only 1400 feet deep and within 600 feet of the water well. Even in that case EPA and the local environmentalist could not show the contamination was due to fracking. One in 1 million. It is also misleading for the writer to say that 1000 substances could exist in the fracking water. After the fracking, minerals and chemicals leech into the well. That is the souce of 90% or more of the individual chemicals. But more important is the concentrations. The vast majority are in parts per billion range and the hazard to humans is very very low. Responsible efforts to inform the public would note that. Your home cleaning cabinet and super market is far more hazardous.

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