Energy Exchange

New Study Underscores Urgent Need to Reduce Methane Emissions from Natural Gas Operations

By Steven Hamburg / Published: November 26, 2013

Steve-Hamburg_D4B8294_287x377You may have seen news reports about a new methane emissions study conducted by climate researchers from Harvard and seven other institutions and just published in Proceedings of the National Academy of Sciences (PNAS).  The new paper provides an improved estimate of the total methane budget of the US – in other words, how much methane is being released into the atmosphere each year from all sources, including livestock and oil-and-gas production.

Based on analysis of nearly 5,000 air samples collected in 2007 and 2008 from ten communications towers located around the country, as well as 7,700 samples taken in those years from an aircraft monitoring program, the study finds that total methane emissions due to human activity were roughly 1.5 times greater at that time than previously estimated.  Emissions from livestock were roughly twice as high as previous estimates.  Emissions from oil-and-gas operations in Oklahoma and Texas were 2.7 times higher than estimated.

We are glad to see the methane issue getting the attention it deserves.  While EDF’s work to deepen our understanding of current emissions continues, there’s no question about the need for regulation to measure and reduce these emissions.  In August, scientists with the National Oceanic and Atmospheric Administration (NOAA) and the University of Colorado (UC) at Boulder published a long-awaited paper on methane leakage in the journal Geophysical Research Letters that reported an alarmingly high level of methane emissions in the Uintah Basin of Utah — 6.2 to 11.7 percent of total production for an area about 1,000 square miles.  Read More »

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Colorado’s Proposal Shows What it Takes to Make Progress on Climate

By Eric Pooley / Published: November 20, 2013
morberg /flickr

morberg /flickr

This commentary originally appeared on our EDF Voices: People on the Planet blog.

At a time when partisan rancor is the order of the day, this week’s news out of Colorado is a tribute to the power of partnership. On Monday, Governor John Hickenlooper of Colorado proposed new regulations for oil and gas operations that, if adopted, will cut both conventional air pollution and climate pollution – by making Colorado the first state in the nation to tackle the problem of methane emissions. The big announcement showed that industry leaders, state officials and an environmental group like Environmental Defense Fund can sit down together to negotiate a plan to deliver cleaner, safer air. And just in time. As EDF’s Rocky Mountain Regional Director Dan Grossman told NPR this week, “the fundamental question [is] whether or not citizens will tolerate oil and gas development.”

On Election Day, four Colorado communities voted to ban hydraulic fracturing. State officials and industry leaders are getting the message: public trust has been badly damaged, and the only way to restore it is by putting in place strong rules to protect air, water, and communities. Not every community is going to ban oil and gas development, obviously, so we need to protect the many places where it is happening.

While the new Colorado proposal doesn’t address all the issues surrounding oil and gas development, the governor and the state’s regulators should be applauded for their efforts in bringing forward these commonsense air pollution measures, which were agreed to and supported by EDF, Anadarko Petroleum, Encana, and Noble Energy. And we’re not the only ones who think so. Newspapers from Los Angeles to Denver to New York wrote in support of the new rules. New York Times columnist Joe Nocera praised both the proposed legislation and Environmental Defense Fund’s collaborative approach in an op-ed published Monday.  Read More »

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Wyoming Raises the Bar on Air Quality for Oil & Gas

By Jon Goldstein / Published: November 7, 2013

Source: Evolving ITSM

When it comes to willingness to show leadership in the critical field of air quality, Wyoming is once again first out of the gate with important new requirements to reduce harmful emissions from leaking oil and gas equipment — a major source of air pollution that can create serious air quality problems.

A Wyoming program finalized last week requires operators that are requesting permits for new and modified sources, such as wells or tanks, in the state’s most active oil and gas fields to find and fix leaking equipment under required Leak Detection and Repair (LDAR) programs.  Companies are required to inspect their operations quarterly utilizing reliable, technologically-precise detection methods at those sites most likely to leak.

This sort of leadership is not new to the Cowboy State. Wyoming has a tradition of being a first mover on air pollution reduction requirements, including pioneering the so-called “green completion” rules to reduce emissions from new wells that have since become the federal standard.

Wyoming’s LDAR program is a smart step forward on sensible, effective air quality regulations for the oil and gas industry. Tightening systems so that leaks are plugged will both protect the air we breathe and reduce the waste of a precious natural resource. In fact, strong LDAR programs may be the best, most cost-effective way to fix leaks and minimize pollution.

EDF, the Wyoming Outdoor Council (WOC) and Citizens United for Responsible Energy Development (CURED) offered their strong support for the state’s proposed LDAR program in joint comments, while also suggesting key improvements – chiefly, that the state  ensure these programs use readily-available, cost-effective technologies (like infrared cameras) to detect pollution.

We are pleased that this improvement was included in the final requirements and it shows the state’s willingness to work collaboratively in addressing Wyoming’s air issues.

Next up, the state should consider making these strong requirements apply to existing sources, such as previously drilled wells already in production, and on a statewide basis. But in the meantime, other states, including Colorado, should take note. On protecting the air we breathe, Wyoming just raised the bar.

 

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Methane: a Key to Dealing With Carbon Pollution?

By Steven Hamburg / Published: November 5, 2013

Carbon is typically considered enemy number one in the context of climate-altering pollution. There is good reason why. Carbon dioxide (CO2) emitted from power plants is the leading source of U.S. greenhouse (GHG) emissions. Beyond our borders, the historic level of 400 parts per million of GHGs entering into our earth’s atmosphere was passed just five months ago – an indication of the rapid rise in human-produced emissions.

And while reducing carbon pollution is the primary goal of EDF’s climate agenda, so is minimizing methane emissions from natural gas development. That’s because methane, the main ingredient in natural gas, is a powerful GHG that can cause major climate damage in the short term. In fact, a recent analysis by many of the world’s top experts on evolving climate science, the Intergovernmental Panel on Climate Change (IPCC), reports methane to be at least 84 times more potent than CO2 over the first two decades. On a 100-year timeframe, methane is at least 28 times more potent. These are noticeable changes in methane’s Global Warming Potential (GWP) from the IPCC’s last assessment in 2007, with values raised from 72 to 84 and 25 to 28, roughly a 17 percent increase on a 20-year time horizon and a 12 percent increase on a 100-year basis.

IPCC’s fifth assessment (AR5) also quantitatively discusses two additional indirect effects that further increase, albeit modestly, methane’s GWP. First, IPCC considers climate-carbon feedbacks and reports two sets of GWP values: one that accounts for the feedbacks and another that excludes them (they conclude that including this effect is “likely” to give a more accurate estimate of climate impacts from emissions of greenhouse gases like methane or CH4). The 20-year GWP for methane with feedbacks increases from 84 to 86, with the 100-year GWP up from 28 to 34. The explanation for this feedback is diminishing ability of oceans and soils to absorb carbon dioxide as the climate warms. As a result, as methane emissions warm the climate, more CO2 that would have historically been absorbed by the land and ocean remains in the atmosphere, causing additional warming. The second effect now quantified by the IPCC is the production of additional CO2 as CH4 is oxidized in the atmosphere, which adds another point or two to methane’s GWP.

Read More »

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“Go Time” for Groundwater Testing In Wyoming

By Jon Goldstein / Published: October 16, 2013

Everyone wins when states institute strong, science-based groundwater testing programs around oil and gas development areas. Landowners get important information about their water quality and protection from potential spills. Oil and gas companies get what is essentially an insurance policy tracking the quality of area drinking water sources both before and after drilling. And regulators get an important new source of data to help them understand local conditions and target clean up, if needed.

EDF has advocated for a program in Wyoming that aims to do exactly this – establish a groundwater quality baseline in areas where oil and gas development is planned, and then follow up with two sets of tests to monitor for potential impacts from this specific activity. And Wyoming regulators have proposed a program that would, on the whole, create a strong, scientifically valid groundwater testing program.

Late last week, Wyoming’s powerful paper of record, the Casper Star-Tribune, announced it agrees.

Read More »

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New Study Launches In Series Evaluating Methane Across The Natural Gas System

By Mark Brownstein / Published: October 16, 2013

Source: San Antonio Business Journal

This year is proving to be a big year for methane research.  We’ve seen a handful of new studies published, some funded by EDF and some not, as well as new projects announced.

The attention methane is getting by the scientific community is justified and overdue. Methane emissions are a central issue in the debate over the role that natural gas may play in our national energy future. From a climate perspective, methane is 72 times more powerful than carbon dioxide (CO2) on a per ounce basis when released into the atmosphere over the first 20 years.  And according to new projections by the Intergovernmental Panel on Climate Change (IPCC), methane is far more potent than we realized (as much as 84 to 87 times more potent than CO2 on a 20-year basis).

The oil and natural gas industry is the single largest source of manmade methane emissions in the United States. Despite this, little is known about how much methane is released from where across the natural gas supply chain. But, according to the Environmental Protection Agency’s latest estimates, we know enough to say that methane poses a serious problem to the climate. Read More »

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