Valentine writes: "Air pollution from hydraulic
fracturing operations can likely travel hundreds of miles, even into states
with little or no fracking, a new study has found."
A natural gas well in Bradford County, Pa. (photo: Reuters)
Fracking Wells Could Pollute the Air Hundreds of Miles
Away
By
Katie Valentine, ThinkProgress
06 May 15
ir pollution from hydraulic fracturing operations can
likely travel hundreds of miles, even into states with little or no fracking, a
new study has found.
The study, published in the
journal Atmospheric Environment, looked at hourly measurements of air
pollutants like ethane and methane — gases that are found in natural gas — in
Baltimore, Maryland and Washington, D.C. between 2010 and 2013. It found that
ethane measurements increased by 30 percent between 2010 and 2013 in the
region.
The researchers focused on ethane because they
couldn’t find enough data for methane emissions during the time period, and
ethane is the second-most abundant compound in natural gas. Ethane spikes in
Maryland and D.C.’s air isn’t good news for residents of the region: when
ethane is breathed in, it can cause nausea, headaches, and dizziness.
But Maryland doesn’t currently allow fracking — former
Gov. Martin O’Malley didn’t propose fracking
regulations until the end of his term, and the state didn’t have any fracking
between 2010 and 2013. So the researchers compared the ethane data to natural
gas production in neighboring states atop the Marcellus shale play, including
West Virginia, Pennsylvania, and Ohio. By doing so, the researchers found that
the ethane emissions they found in Maryland appeared to be coming from these
neighboring states’ natural gas operations.
“As shale natural gas production continues to expand,
this increasing trend will continue in downwind regions until more efficient
control technologies are applied,” the authors write in the study.
The authors reviewed levels of ethane in Atlanta,
Georgia, a city that isn’t downwind of fracking operations, and found no
increase in ethane levels between 2010 and 2013. They were also able to rule
out other potential sources of the ethane, including natural gas storage fields
in nearby Garrett County, Maryland, and vehicles. Neither of these potential
sources saw a spike in natural gas use between 2010 and 2013. But, the report
notes, Pennsylvania and West Virginia “house thousands of wells responsible for
a tenfold increase in natural gas production volumes from 2009 to 2013.”
Geographical data displaying the number of fracking wells in the Northeast.
(photo: Atmospheric Environment)
The study points to the need to keep insterstate
pollution in mind when drafting rules on emissions from fracking, one of the
study’s authors said in a statement. Methane emissions from fracking aren’t
currently regulated in the U.S., but the Environmental Protection Agency introduced a proposed rule
earlier this year that aims to cut the emissions.
“What these results mean to me is that we’ve got
strong indications that it’s a regional issue,” author Sheryl Ehrman, chemical
and biomolecular engineering professor at the University of Maryland, said in a
statement. “What we want to
do is bring this to people’s attention, advocate for long-term methane
monitoring, and promote regional cooperation in monitoring and reducing
emissions from natural gas production.”
The study states that, along with ethane, gases like
methane and other pollutants could also be traveling across state borders,
something that could cause major impacts on air quality and ozone levels in
cities downwind of fracking operations.
Other studies have illustrated fracking’s link to air
and water pollution. One study of southwestern Pennsylvania fracking wells last
year found that the wells
released methane at rates 100 to 1,000 times higher than estimates by the EPA.
Methane, though shorter-lived once it’s released into the atmosphere than
carbon dioxide, is more effective at trapping heat, making it a potent
greenhouse gas. A study last year also confirmed that fracking operations have
contaminated well water in multiple states, and
another found that methane
concentration of residential water wells at Pennsylvania homes one mile from
fracking wells was six times higher than it was in homes located farther away
from wells. The study found that ethane levels were also elevated in water of
homes closest to wells.
Health problems, too, have been linked to this
pollution: a study last year found higher rates of
illness in Pennsylvania households located close to fracking wells than in
households farther away.
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