Fracking: Gas drilling's environmental threat and some latest studies

ProPublica surveys some recent research on potential health implications of hydro fracking

For years, environmentalists and the gas drilling industry have been in a pitched battle over the possible health implications of hydro fracking. But to a great extent, the debate — as well as the emerging lawsuits and the various proposed regulations in numerous states — has been hampered by a shortage of science.

In 2011, when ProPublica first reported on the different health problems afflicting people living near gas drilling operations, only a handful of health studies had been published. Three years later, the science is far from settled, but there is a growing body of research to consider.

Below, ProPublica offers a survey of some of that work. The studies included are by no means a comprehensive review of the scientific literature. There are several others that characterize the chemicals in fracking fluids, air emissions and waste discharges. Some present results of community level surveys.

Yet, a long-term systematic study of the adverse effects of gas drilling on communities has yet to be undertaken. Researchers have pointed to the scarcity of funding available for large-scale studies as a major obstacle in tackling the issue.

A review of health-related studies published last month in Environmental Science & Technology concluded that the current scientific literature puts forward “both substantial concerns and major uncertainties to address.”

Still, for some, waiting for additional science to clarify those uncertainties before adopting more serious safeguards is misguided and dangerous. As a result, a number of researchers and local activists have been pushing for more aggressive oversight immediately.


The industry, by and large, has regarded the studies done to date — a number of which claim to have found higher rates of illness among residents living close to drilling wells — as largely anecdotal and less than convincing.

“The public health sector has been absent from this debate,” said Nadia Steinzor, a researcher on the Oil and Gas Accountability Project at the environmental non-profit, Earthworks.

Departments of health have only become involved in states such as New York and Maryland where regulators responded to the public’s insistence on public health and environmental reviews before signing off on fracking operations. The states currently have a moratorium on fracking.

New York State Health Commissioner Nirav Shah is in fact conducting a review of health studies to present to Governor Andrew Cuomo before he makes a decision on whether to allow fracking in the state. It is unclear when the results of the review will be publicly available.

Other states such as Pennsylvania and Texas, however, have been much more supportive of the gas industry. For instance, Texas has been granting permits for fracking in ever increasing numbers while at the same time the Texas Commission on Environmental Quality, the agency that monitors air quality, has had its budget cut substantially.

1. An Exploratory Study of Air Quality near Natural Gas Operations. Human and Ecological Risk Assessment, 2012.

The study, performed in Garfield County, Colo., between July 2010 and October 2011, was done by researchers at The Endocrine Disruption Exchange, a non-profit organization that examines the impact of low-level exposure to chemicals on the environment and human health.

In the study, researchers set up a sampling station close to a well and collected air samples every week for 11 months, from when the gas wells were drilled to after it began production. The samples produced evidence of 57 different chemicals, 45 of which they believe have some potential for affecting human health.

In almost 75 percent of all samples collected, researchers discovered methylene chloride, a toxic solvent that the industry had not previously disclosed as present in drilling operations. The researchers noted that the greatest number of chemicals were detected during the initial drilling phase.

While this study did catalogue the different chemicals found in air emissions from gas drilling operations, it did not address exposure levels and their potential effects. The levels found did not exceed current safety standards, but there has been much debate about whether the current standards adequately address potential health threats to women, children and the elderly.

The researchers admitted their work was compromised by their lack of full access to the drilling site. The air samples were collected from a station close to what is known as the well pad, but not the pad itself.

The gas drilling industry has sought to limit the disclosure of information about its operations to researchers. They have refused to publicly disclose the chemicals that are used in fracking, won gag orders in legal cases and restricted the ability of scientists to get close to their work sites. In a highly publicized case last year, a lifelong gag order was imposed on two children who were parties to a legal case that accused one gas company of unsafe fracking operations that caused them to fall sick.

In 2009, the Independent Petroleum Association of America started Energy In Depth, a blog that confronts activists who are fighting to ban fracking and challenges research that in any way depicts fracking as unsafe.

Energy In Depth Error! Hyperlink reference not valid.and criticized its lack of proper methodology. The blog post also questioned the objectivity of the researchers, asserting that their “minds were already made up.”

The industry has also been performing its own array of studies.

Last year, for instance, an industry-funded study on the methane emissions from fracking wells was published in the prestigious journal, Proceedings of the National Academy of Sciences. It concluded that only very modest amounts of methane — a known contributor to climate change — was being emitted into the air during fracking operations.

The study came under heavy criticism from Cornell researcher Robert Howarth, who two years prior had published work that claimed methane emissions from shale gas operations were far more significant.

“This study is based only on evaluation of sites and times chosen by industry,” he said.

2. Birth Outcomes and Natural Gas Development. Environmental Health Perspectives, 2014.

The study examined babies born from 1996 to 2009 in rural Colorado locations — the state has been a center of fracking for more than a decade. It was done by the Colorado School of Public Health and Brown University.

The study asserted that women who lived close to gas wells were more likely to have children born with a variety of defects, from oral clefts to heart issues. For instance, it claimed that babies born to mothers who lived in areas dense with gas wells were 30 percent more likely to have congenital heart defects.

The researchers, however, were unable to include data on maternal health, prenatal care, genetics and a host of other factors that have been shown to increase the risk of birth defects because that information was not publicly available. A common criticism of many scientific studies is that they do not fully analyze the possibility of other contributing factors.

The study has thus come under attack from both the industry and state public health officials. In a statement, Dr. Larry Wolk, the state’s Chief Medical Officer, said “people should not rush to judgment” as “many factors known to contribute to birth defects were ignored” in the study.

But Lisa McKenzie, one of the lead authors of the study, said there was value to the work.

“What I think this is telling us is that we need to do more research to tease out what is happening and to see if these early studies hold up when we do more rigorous research,” she said.

In Pennsylvania, Elaine Hill, a graduate student at Cornell University, obtained data on gas wells and births between 2003 and 2010. She then compared birth weights of babies born in areas of Pennsylvania where a well had been permitted but never drilled and areas where wells had been drilled. Hill found that the babies born to mothers within 2.5 kilometers (a little over 1.5 miles) of drilled gas sites were 25 percent more likely to have low birth weight compared to those in non-drilled areas. Babies are considered as having low birth weight if they are under 2500 grams (5.5 pounds).

Hill’s work is currently under review by a formal scientific journal, a process that could take three or four years.

3. Health Risks and Unconventional Natural Gas Resources. Science of the Total Environment, 2012.

Between January 2008 and November 2010, researchers at the Colorado School of Public Health collected air samples in Garfield County, Colo., which has been experiencing intensive drilling operations. Researchers found the presence of a number of hydrocarbons including benzene, trimethylbenzene and xylene, all of which have been shown to pose health dangers at certain levels.

Researchers maintained that those who lived less than half a mile from a gas well had a higher risk of health issues. The study also found a small increase in cancer risk and alleged that exposure to benzene was a major contributor to the risk.

“From the data we had, it looked like the well completion phase was the strongest contributor to these emissions,” said Lisa McKenzie, the lead author of the study.

During the completion phase of drilling, a mixture of water, sand and chemicals is forced down the well at high pressure, and is then brought back up. The returning mixture, which contains radioactive materials and some of the natural gas from the geological formation, is supposed to be captured. But at times the mixture comes back up at pressures higher than the system can handle and the excess gas is directly vented into the air.

“I think we ought to be focused on the whole thing from soup to nuts because a lot of the potential hazards aren’t around the hydraulic fracturing step itself,” said John Adgate, chair of the Department of Environmental and Occupational Health at the Colorado School of Public Health and co-author on the study.

Energy In Depth, the industry blog, responded at length to this study and cited several “bad inputs” which had affected the results of the study. The researchers’ assumptions and data were criticized. For instance, the researchers had assumed that Garfield residents would remain in the county until the age of 70 in order to estimate the time period over which they would be exposed to the emissions.

“Unless the ‘town’ is actually a prison, this is a fundamentally flawed assumption about the length and extent of exposure,” Energy In Depth said.




Traffic can be stopped only for President, Vice President and Prime Minister

We all witness halting of traffic when all grades of ministers, with red beacon lights on their cars and cavalcade of several vehicles, pass through the road. RTI reveals this is illegal! The RTI activist also raised the issue before the Human Rights Commission

Most urban cities have one more sore point for traffic besides vehicle congestion and that is halting of traffic whenever any VIP passes by, often with a cavalcade of vehicles behind him. The common commuter is stranded, sometime for a long time.

While all grades of ministers lavishly enjoy this VIP treatment on roads, Jammu-based noted Right to Information (RTI) activist Deepak Sharma has procured information under RTI, which comes as a pleasant surprise.

The Ministry of Home Affairs (MHA) in reply to an RTI filed by Sharma revealed that the traffic on roads can be stopped only in the case of movement by the President of India, the Vice President of India, the Prime Minister of India and visiting foreign dignitaries who are given President/ PM level security cover.


Sharma said, “I have always been angry about closure of road traffic for the general public in order to facilitate easy and free movement of VIPs and their convoy. Even if there is a case of emergency, vehicles like ambulances also get stranded.’’


A couple of years back, a patient who was being rushed to the hospital in an ambulance lost his life as traffic was stranded for PM Manmohan Singh.


In the reply to his RTI application, the MHA said, “…it may be stated that as per guidelines issued by MHA in consultation with Central Security Agencies, traffic is to be stopped only in the case of President of India, the Vice President of India, the Prime Minister of India and visiting foreign dignitaries who are given President’s/ PM level security cover so as to give them safe passage during movement by road. Further details in this regard are exempt under Section 24 (1) and 8 (1)(g) of the RTI Act 2005 and cannot b e disclosed.’’


However, the RTI reply makes it clear that there is a set of rules adopted by state governments for halting of traffic for VIPs smooth transit on road. The reply states: “Details with regard to the authority vested with the police for regulating traffic movement in connection with movement of dignitaries or otherwise, may pertain to the state governments, form where the information may be obtained directly. Information on the subject may also be available with the Ministry of Road Transport and Highways to whom a copy of your application is being transferred under Section 6(3) of the RTI Act 2005 to provide you the information that they may have.”


“Similarly, a copy of your application is also being transferred to Delhi Police for providing you information (in respect of Delhi Police) if any, they may have on the subject.’’


Interestingly, Sharma filed his RTI, online. Following are the details:


RTI to MHA by online mode vide Regn. No. MHOME/R/2014/60202.

For reply, Please check follow the link:

Enter registration no. : HOME/R/2014/60202

Email id                                 :  [email protected]

RTI queries:

1)     Kindly provide the designations of all such VIPs etc. who are allowed to move freely on the roads by closing the traffic on roads for general public.


2)     Kindly provide the clear and certified copy of the order/directive etc. issued by Department of Home or some other competent authority which allows/authorizes the Traffic police or any other such agency to close traffic for general public for ensuring the free and easy movement of VIPs etc on the roads.


3)     Kindly mention under rules what legal action is taken against a person who refuses to stop or tries to pass through the road which is closed for traffic for the easy and free movement of the VIPs on the road. Kindly provide the relevant sections under law in this regard.


4)     Kindly provide the clear and certified copy of the order/directive etc. which allows ambulances/patients etc. to pass through the road which is closed for traffic for general public for ensuring easy and free movement of VIPs etc on the roads.


Sharma termed the present practice followed by traffic police to close the traffic for allowing free movement to all VIPs as undemocratic and violation of fundamental right of the people to enjoy right to freedom of movement.


Sharma also approached the State Human Rights Commission of J&K, petitioning that the general public is facing lot of hardship and sufferings due to this practice. He wrote: “This act of traffic police costs lives at times particularly when patients need immediate treatment in hospitals. The stoppage of traffic for general public to give smooth passage to VIPs also hits the right to liberty and right to freedom of movement of the general public.’’


The petitioner also placed on record of Rights Panel, the guidelines issued by Ministry of Home Affairs to stop traffic to give passage during movement by road, only in case of president of India, the Vice President of India, the Prime Minister of India and visiting dignitaries who are given President/ PM level security cover.


Considering the averments made in the petition a case of Human Rights violation, the acting Chairperson of State Human Rights Commission, Rafiq Fida, issued notice to Divisional Commissioners of Kashmir and Jammu and IGP Traffic, J&K for filing their factual reports in the matter. It stated: “The Commission cannot lose sight of the facts prevailing in the state on account of security scenario, but traffic department needs to adopt measures to minimize the inconvenience of the public in general due to stoppage of traffic to give safe passage to VIPs not entitled for the same”.


The hearing is on 30 March 2014.


Urging readers to file RTI in your respective city or town regarding which strata of VIP at the local level is covered under such VIP rule.


(Vinita Deshmukh is consulting editor of Moneylife, an RTI activist and convener of the Pune Metro Jagruti Abhiyaan. She is the recipient of prestigious awards like the Statesman Award for Rural Reporting which she won twice in 1998 and 2005 and the Chameli Devi Jain award for outstanding media person for her investigation series on Dow Chemicals. She co-authored the book “To The Last Bullet - The Inspiring Story of A Braveheart - Ashok Kamte” with Vinita Kamte and is the author of “The Mighty Fall”.)



shadi katyal

3 years ago

We the people are responsible for such deaths and delay as well as loss of business etc.
Why has the VIP themselves have brain enough to think???We created this monster ourselves by not standing up and blocking such blockages.
We could learn something from other nations.e.i USA President when visiting other cities, the time table of his route is published and junctions are closed for maximum 10 minutes and traffic is resumed. The ambulances are given preferences as matter of life and death are more important than even the President.
We should be ashamed of how the police behaves and why are the roads closed for hours ???
Maybe we should thank that ATLEAST THEY ARE NOT TRAVELLING ON ELEPHANTS OR BULLOCK CARTS BUT do we find any difference.
Thank SC for taking action even after 6 decades lagter

shadi katyal

3 years ago

We the people are responsible for such deaths and delay as well as loss of business etc.
Why has the VIP themselves have brain enough to think???We created this monster ourselves by not standing up and blocking such blockages.
We could learn something from other nations.e.i USA President when visiting other cities, the time table of his route is published and junctions are closed for maximum 10 minutes and traffic is resumed. The ambulances are given preferences as matter of life and death are more important than even the President.
We should be ashamed of how the police behaves and why are the roads closed for hours ???
Maybe we should thank that ATLEAST THEY ARE NOT TRAVELLING ON ELEPHANTS OR BULLOCK CARTS BUT do we find any difference.
Thank SC for taking action even after 6 decades lagter

Dr Anantha K Ramdas

3 years ago

Thanks to Ms Vinita Deshmukh for writing about this special treatment usurped by a lot of politicians.

Even ambulances and fire engines do not get the right of way, in heavy traffice. In the US, for instance, drivers on the road have to move aside to less the above emergency vehicles pass and traffice automatically comes to a halt to let them move on. Alas, it does not happen here in Bangalore, and I am sure in all other cities as well.

Looks like Ms Vinita Deshmukh has not been to Chennai to see the spectacle of Amma passing by to and from her office. I had a tiff with a policeman several years ago on a visit and after a heated exchange, I was told that "amma" was expected to pass! By which time, an inspector came and when I told him that I am a freelance Journalist, my auto driver was allowed to pass and
take a side road to reach my detination! The trouble is aam aadmi is helplessly placed because even the policeman on duty will ignore your complaint!

Abhijit Gosavi

3 years ago

Patient lost his life in the ambulance while traffic was stranded for a minister? Can there be anything more inhuman? Don't know how these people sleep at night!


3 years ago


Please avoid words like KINDLY, HUMBLY etc, etc. from RTI applications. It is your RIGHT to information.

Sensex, Nifty continue to head higher: Wednesday closing report

Only a close below 6,270 on the Nifty tomorrow would mean a reversal of the trend

Although the Indian stock market opened Wednesday in the positive, it went into the red two hours later. After trading in the red for about an hour the benchmark made a gradual recovery and closed almost at the level at which it had opened for the day.


The BSE 30-share Sensex opened at 21,280 and moved in the range of 21,176 and 21,333 and closed at 21,277 (up 67 points or 0.32%) while the NSE Nifty opened at 6,328 and moved between 6,288 and 6,336 and closed at 6,329 (up 31 points or 0.49%). The NSE recorded a higher volume of 62.50 crore shares.


The Election Commission has announced the dates for 2014 Lok Sabha elections. The polls will be held between 7 April 2014 and 12 May 2014 on nine days.


Private sector output across India rose for the first time in eight months during February. The seasonally adjusted HSBC India Composite Output Index posted 50.3 in February 2014, higher than 49.6 in January 2014, indicating a fractional rate of expansion. Adjusted for seasonal influences, the headline HSBC Services Business Activity Index rose from 48.3 in the previous month to 48.8 in February. This was consistent with a slight rate of contraction, and one that was the slowest in the current eight-month period of reduction, Markit Economics said. Sector data indicated that four of the six monitored categories recorded falling business activity, with the fastest decrease noted in Financial Intermediation.


India's exports will not be able to achieve the target of $325 billion in the current fiscal and will fall short by about $10 billion, Federation of Indian Exports Organisation (FIEO) said. The country's merchandise exports would touch $312-315 billion by the end of this fiscal, ending March 31. Finance Minister P Chidambaram in the interim budget speech had said that India's exports are foreseen to grow by 6.3% to $326 billion during the current fiscal.  "The government should not fix annual targets for exports. We should fix a target for five years and work accordingly," FIEO President Rafeeq Ahmed says.


State-run banks' bad loans are anticipated to be slightly higher by March-end from a year earlier, Finance Minister P Chidambaram said on Wednesday after reviewing their quarterly performance. He added that banks recovered bad loans worth Rs18,933 crore during April to December 2013.


US indices closed sharply higher on Tuesday. The US economy will grow this year at its fastest pace since 2005, helping reduce the annual average unemployment rate for a fourth straight year even as market borrowing costs rise, the Obama administration predicted. Gross domestic product will expand 3.1% in 2014 after rising 1.9% last year, the administration said in forecasts accompanying its 2015 budget plan released in Washington. The jobless rate will average 6.9% this year, compared with 7.4% last year, and average 6.4% in 2015, according to estimates based on information as of mid-November.


Except for Shanghai Composite (down 0.89%) and Hang Seng (down 0.34%) all the other Asian indices closed in the green. Jakarta Composite (1.26%) was the top gainer.


The HSBC China services Purchasing Managers' Index rose to 51 in February from 50.7 in January, HSBC Holdings PLC said on Wednesday.


European indices were trading in the red while US Futures were trading marginally in the green.


UK services expanded for a 14th month in February as an index of employment rose and confidence increased to the highest level since September 2009.


A Purchasing Managers’ Index was 58.2 compared with 58.3 in January. Manufacturing and construction both grew in February and Markit said today that those reports, combined with today’s services reading, indicate the economy is expanding at a pace of about 0.7% in the first quarter. In the Euro area, services output expanded faster than initially estimated in February, as Germany boosted growth to the strongest in almost three years. Markit’s index for the region rose to 52.6, compared with a provisional reading of 51.7. The gauge was 51.6 in January. A composite index of manufacturing and services increased to 53.3.


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