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Originally published April 2, 2013 at 10:04 PM | Page modified April 3, 2013 at 10:45 AM

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Arkansas oil spill renews debate on Keystone, pipeline ruptures

The spills have spurred more criticism from Keystone XL pipeline foes and raised new questions about federal monitoring of the nation’s pipeline labyrinth.

The New York Times

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Two recent oil-pipeline spills have prompted new criticism from opponents of the proposed Keystone XL project, while raising more questions about whether the federal government is adequately monitoring the nation’s vast labyrinth of pipelines.

An Exxon Mobil pipeline ruptured in central Arkansas on Friday, leaving a sheen of oil on nearby streets and causing the evacuation of 22 homes in the small town of Mayflower.

Exxon Mobil said its Pegasus Line, which runs from Patoka, Ill., to Nederland, Texas, was carrying heavy crude from western Canada when the spill occurred. On Tuesday, Attorney General Dustin McDaniel of Arkansas announced he was opening an investigation into the spill, and asked Exxon to preserve all documents related to the accident.

Opponents of the Keystone XL pipeline, which would also move heavy Canadian crude, leapt on the Exxon spill, reiterating their contention that crude drawn from Canada’s tar sands region is too risky to transport and especially vexing to clean up.

“What we’ve got here is a small example of the type of risks associated with a tar sands pipeline,” said Anthony Swift, a lawyer with the Natural Resources Defense Council, one of many environmental groups fighting the pipeline proposal, which is awaiting State Department approval. “It also demonstrates the large gaps in pipeline safety.”

On Tuesday, vacuum trucks and crews were still working to clean up the accident, which the Environmental Protection Agency called a “major spill.” While it was unclear how much oil had leaked, Exxon Mobil said it had recovered thousands of gallons of oil mixed with water and had prepared for a spill as large as 420,000 gallons, though it said it believed that the amount spilled was smaller.

Late Tuesday, the federal Pipeline and Hazardous Materials Safety Administration ordered Exxon not to restart the pipeline without approval, because of its proximity to populated areas and waterways, and because the initial investigation had not yet uncovered the cause of the accident.

The spill followed an accident in Utah on March 18 in which a Chevron pipeline leaked more than 25,000 gallons of diesel fuel in a wetlands area about 50 miles from Salt Lake City.

The safety records of both the Exxon and Chevron pipelines have been under scrutiny in recent years.

Last week, the pipeline agency proposed imposing a $1.7 million fine on Exxon Mobil over a 2011 spill that dumped an estimated 63,000 gallons of oil in the Yellowstone River in Montana. Records show the pipeline agency proposed imposing a fine of about $150,000 in the same year over the company’s failure to properly test several pipelines.

In June 2010, a Chevron pipeline spilled more than 33,000 gallons of crude into Red Butte Creek near Salt Lake City. The company took more than 10 hours to respond to the spill, and it was fined $423,600, according to pipeline agency records.

Seven months later, a second Chevron spill sent an additional 21,000 gallons of oil into the same area.

Carl Weimer, a member of the agency’s technical advisory committee, said he was told by a federal official that Chevron was thought to have misidentified the section of the pipeline that caused the spill last month, classifying the part of the pipeline in question as seamless in its integrity-management plan, an internal document that helps guide inspections.

In fact, the section had a seam, and it was of a type known to be subject to accidents, Weimer said.

In recent years, critics have said the pipeline agency has allowed companies too much autonomy in regulating their own operations. In 2011, Congress approved legislation that increased maximum fines that pipeline operators face for safety violations, among other measures.

Last month, the State Department released a revised environmental-impact statement on the proposed Keystone XL pipeline, finding no conclusive evidence to keep the project from moving forward. A public hearing on the report will take place next month in Nebraska. President Obama is expected to make a decision on the pipeline later this year.

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