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Lisa Song's articles

Fate of Exxon's Burst Pegasus Pipeline to Be Decided in 2014

Several other major pipelines intended to transport diluted bitumen from Canada's tar sands could be affected by the Pegasus outcome.

Jan 2, 2014
Exxon's burst Pegasus pipeline

Industry analysts and others who have wondered whether ExxonMobil will restart the broken Pegasus pipeline that leaked Canadian oil across an Arkansas suburb should get their answer in 2014.

The 65-year-old pipeline hasn't shipped any oil since it ruptured on March 29, costing Exxon as much as $450,000 a day in lost revenue, or up to $124 million as of Jan. 1. It's unclear when exactly the company might resume pumping oil through the 858-mile line that crosses dozens of waterways, farms and residential neighborhoods on its way from Illinois to the Texas Gulf Coast—though a decision is underway.

Exxon spokesman David Eglinton said the company "will not restart it until we are satisfied it is safe to do so and have the approval of [federal regulators]."

Several other major pipeline projects could be affected by the Pegasus outcome, because operators are planning to reverse the flow inside older, existing pipelines to carry dilbit from Canada's tar sands. That is exactly what Exxon did to the aging Pegasus in 2006. Some experts believe the extra pressure swings required to move dilbit could have contributed to the line's failure. The Pegasus was already prone to rupture due to a faulty 1940s-era construction technique as well as flawed maintenance and operations.

In 2013, Exxon Spill Showed Dangers of Pipelines Buried Under Backyards

The Arkansas spill shone a spotlight on the dangers hiding in existing pipelines. It also reignited the debate over the proposed Keystone XL.

Dec 24, 2013
Mayflower, Arkansas

When a 65-year-old ExxonMobil pipeline ruptured on March 29 and spilled 210,000 gallons of oil in Mayflower, Ark., it opened the nation's eyes to the potential dangers lurking in the thousands of miles of aging and overlooked pipelines buried beneath neighborhoods and farms.

The spill also brought fresh attention to the debate over the proposed Keystone XL pipeline and the inherent risks of transporting Canadian tar sands across America's heartland. Exxon's Pegasus pipeline was carrying dilbit when it split open on Good Friday, the same type of tar sands oil that would run through the Keystone. A separate, much larger dilbit spill in Michigan is still being cleaned up more than three years later.

What's Behind Surging Ozone Pollution in Texas? Study to Weigh Role of Fracking in Health Hazard

In San Antonio, the steepest increase in ozone coincides with the boom in the Eagle Ford shale. The heaviest drilling there lies 50 miles from the city.

Oct 23, 2013
Eagle Ford

When ozone pollution skyrocketed in the tiny town of Boulder, Wyo., in 2008, it was relatively easy to identify the culprit as oil and gas drilling, the only major industry in the rural area.

Today, a similar situation in San Antonio, Texas, will be more difficult to resolve. The city has violated federal ozone standards dozens of times since 2008, but with so much industrial activity in and around the city—including the Eagle Ford shale drilling boom south of San Antonio—local officials are waiting for the results of a state-funded study to pinpoint the source of the pollution.

San Antonio's ozone problem is so serious that the U.S. Environmental Protection Agency could designate the city a nonattainment area for ozone, a hazardous air pollutant that can cause serious respiratory problems. If that happens, the growing city would likely be saddled with additional air quality regulations, including stricter pollution controls on vehicles and industrial plants.

Map: Little-Known Pipeline Nearly as Big as Keystone Could Win Race to Gulf

The Enbridge pipeline, converted from natural gas, would carry tar sands crude like the Keystone XL but is expected to easily win regulatory approval.

Aug 4, 2013
Eastern Gulf Crude Access Pipeline

A little-known pipeline could win the race to ship heavy Canadian crude oil from the Midwest to the U.S. Gulf Coast if it comes online as planned in 2015.

Called the Eastern Gulf Crude Access Pipeline Project, the 774-mile line would be capable of carrying almost as much oil as the Keystone XL, the controversial pipeline mired in its fifth year of federal review.

The Eastern Gulf would run from Patoka, Ill. to St. James, La., carrying oil from North Dakota's Bakken formation as well as Canadian oil sands crude. Both types of oil are creating a bottleneck in the Midwest, which doesn't have the refining or pipeline capacity to handle the large amounts of oil now being produced.

Sickened by Exxon Oil Spill, Victims Face Confusion of Officials and Doctors

One infant, coughing and wheezing, was first treated with asthma medication, then with antibiotics for a severe respiratory infection.

Jul 3, 2013
Mayflower, Ark. oil spill cleanup

When Diane Wilson complained of headaches and coughs after an oil pipeline ruptured in Mayflower, Ark., her doctor treated her for allergies.

When Genieve Long came down with nausea, rashes and a fever, her doctor couldn't provide a diagnosis.

When Ann Jarrell's 6-month-old grandson began wheezing, a doctor sent him home with asthma medication.

All three families live within a few hundred yards of the March 29 oil spill that sent more than 200,000 gallons of heavy Canadian crude oil through Mayflower. Their experiences offer a snapshot of the confusion surrounding the health impacts of the spill, an uncertainty created by limitations in the science, physicians' lack of training in environmental health and a communication gap between local health officials and the people they are meant to serve. Like families who lived near two other large oil spills—the June 2010 spill in Salt Lake City, Utah and the July 2010 spill in Michigan's Kalamazoo River—they are still searching for answers.

Narrow and Flawed, Federal Pipeline Safety Study Fails to Settle Controversy

Tar sands oil poses no greater risk to pipelines, study says, but is mum on question of its relative danger to humans and the environment when spilled.

Jun 26, 2013
Spilled oil in a creek in Mayflower, Ark.

Diluted bitumen, a controversial form of heavy Canadian oil, poses no more risks to pipelines than conventional oil, according to a long-awaited report released Tuesday by the National Academy of Sciences.

But environmentalists and pipeline watchdogs said the study's scope was so narrow and its methodology so flawed that it does little to settle the controversy over whether diluted bitumen, or dilbit, is more dangerous to humans and the environment than the light, conventional crude oil that most U.S. pipelines were built to handle.

What Sickens People in Oil Spills, and How Badly, Is Anybody's Guess

There are no clear federal guidelines for chemical exposure at oil spills, and no studies to understand the long term dangers to human health.

Jun 18, 2013

Since 2010, at least three ruptured pipelines have spilled oil into U.S. neighborhoods, forcing officials to decide quickly whether local residents would be harmed if they breathed the foul air. But because there are no clear federal guidelines saying if or when the public should be evacuated during an oil spill, health officials had to use a patchwork of scientific and regulatory data designed for other situations.

As a result, residents of the three communities received different levels of protection.

No houses were evacuated in Salt Lake City, Utah, where a ruptured pipeline leaked 33,000 gallons of medium grade crude oil before it was discovered on the morning of June 12, 2010. The oil ran down Red Butte Creek, past neighborhoods where windows were left open in the summer heat. The fumes, which are known to cause drowsiness, left some people so lethargic that they didn't wake up until after noon.

In Marshall, Mich. officials called for a voluntary evacuation after more than a million gallons of heavy Canadian crude spilled into the Kalamazoo River on July 25, 2010. But they agonized over the decision for four days before making that recommendation.

In Mayflower, Ark. authorities quickly evacuated 22 families after a broken pipeline leaked about 200,000 gallons of heavy crude on March 29, 2013. But people living in the same subdivision, just a few blocks away, were not asked to leave. Neither were the residents of the lakeside community where the oil eventually pooled and where the cleanup continues today.

TransCanada Digging Up Defective Segments of New Pipeline, Angering Landowners in Texas

Dozens of "anomalies" — dents and welds — in need of repair on southern leg of Keystone XL thrusts controversial pipeline in the spotlight again.

Jun 5, 2013
Landowner David Whitley stands next to Keystone XL repair site.

A Canadian company is repairing dozens of defects along the newly laid southern leg of the Keystone XL—the section of the oil pipeline that does not need approval from the U.S. State Department and is already under construction.

The Oklahoma-to-Texas pipeline is not yet operational, but landowners worry that the repairs hint at more serious problems that could someday lead to oil spills. The project will carry primarily Canadian oil—including diluted bitumen from Alberta's oil sands—from Cushing, Okla. to the Texas Gulf Coast.

David Whitley, who owns a small cattle ranch in Wood County, Texas, said he first heard about the repairs six weeks ago, when TransCanada—the company behind the project—asked to dig up a small section of the pipeline on his land for a visual inspection. Whitley said the work was described as part of a "random inspection."

Construction workers showed up with heavy equipment and dug a trench at least 30 feet long, he told InsideClimate News. They removed an eight-foot section of pipe and painted it with the words "DENT" and "CUT OUT." Later, Whitley said he found a construction checklist near the trench that labeled his property as work site 31 or 34. (He said the last digit was difficult to read.)

In a video produced by Public Citizen Texas, a nonprofit that opposes the pipeline, landowners say pipeline workers have told them there are at least 40 "anomalies" along a 60 or 70-mile stretch of the line in east Texas.

Map: Another Major Tar Sands Pipeline Seeking U.S. Permit

Canadian energy giant Enbridge is quietly building a 5,000-mile network of new and expanded pipelines that would achieve the same goal as the Keystone.

Jun 3, 2013
Map of new and expanded Enbridge oil pipelines

While all eyes are on TransCanada's Keystone XL pipeline, another Canadian company is quietly building a 5,000-mile network of new and expanded pipelines that would achieve the same goal as the Keystone. In fact, the project by Enbridge, Inc., Canada's largest transporter of crude oil, would bring even more Canadian oil into the U.S. than the much-debated Keystone project.

Enbridge has already begun growing its existing pipeline infrastructure to increase the flow of Canadian and U.S.-produced oil into refineries and ports in the Midwest, Gulf Coast and Northeastern Canada. The company's plans have largely escaped public scrutiny, in part because its expansion has proceeded in many segments and phases.

After Upset Election, Route for Tar Sands to Pacific Doesn't Close

Anti-pipeline candidate ahead in the polls loses British Columbia election, but pipeline projects still face hurdles.

May 16, 2013
Christy Clark, Premier of British Columbia.

Environmentalists suffered a setback on Tuesday when British Columbia re-elected a premier who left the door open for approval of two oil pipelines that would carry tar sands oil across B.C. to the Pacific Coast, where it could be exported to the world market.

Despite trailing in the polls, incumbent Christy Clark, the leader of B.C.'s Liberal Party, defeated Adrian Dix and his New Democratic Party. Dix had opposed both pipelines, and environmental groups had hoped his win would signal the end of the projects.

The two Canadian pipelines—along with the proposed Keystone XL pipeline across the United States—are crucial to the expansion of Canada's oil sands industry, which is based in the province of Alberta. The industry hopes to double in size over the next decade, but because Alberta is landlocked, more pipelines are needed to get the oil to the coast.

Like the Keystone project, the Canadian pipelines face grassroots opposition from local landowners and environmental groups.