WASHINGTON, Kan. — Chris and Bill Pannbacker stood atop a steep sandstone hill adjacent to the spot on the family farm where a major break in TC Energy’s Keystone pipeline showered thousands of barrels of black-as-night crude on livestock grazing land and into nearby Mill Creek.
They were involuntarily drawn into the environmental nightmare Dec. 7, more than six months ago, and still feel the gut-punch of a tragedy that was far from remedied by the relatively quick repair of the 36-inch oil pipe buried underground. The Pannbackers have had an unobstructed view of work by hundreds of people brought in to operate a fleet of heavy equipment — excavators, bulldozers, trucks — to remove oil-saturated soil for disposal in a Nebraska landfill. Machinery was used to install a temporary system of pipes to divert the creek flow to treatment ponds for extraction of potentially harmful chemicals used to shove tacky Canadian tar sand oil through steel pipe to refineries.
Initiation of the restoration phase of the estimated $480 million operation marked a downsizing of the onsite workforce and greater reliance on a menagerie of equipment necessary to bring the impact zone back to life.
Emmons City, the informal name of the site appropriated from the defunct community of Emmons wiped out by a tornado in the 1940s, no longer fills the sky with more artificial light than produced by the city of Washington.
“I am impressed with the cleanup effort and the intensity of the cleanup effort,” said Bill Pannbacker, a beef and crop producer who grew up in a farmhouse less than 1 mile from the pipeline break. “In the defense of TC, they put the effort in.”
Appreciation for the emergency response, however, hasn’t quelled the Pannbackers’ apprehension the clock is ticking toward a repeat of the pipeline catastrophe.
Anatomy of the fracture
There was an alarming pressure drop in Keystone’s pipeline at 9:30 p.m. Dec. 7, and equipment showed the rupture was at a joint immediately south of Mill Creek. TC Energy relies on the pipe system to move crude from Alberta to Manitoba, North Dakota, South Dakota and Nebraska before diverting a portion east through Missouri to Illinois and south through Kansas, Oklahoma and Texas to Gulf Coast refineries or export tankers.
Before the Keystone pipeline could be shut down, as much as 500,000 gallons of crude splattered vegetation and infected the modest creek. It created a hillside stain the size of a football field and left a coat of oil on the water surface. Containment booms and vacuum trucks were deployed. A dam was positioned at a low-water road crossing four miles downstream to better contain the heavy crude. Water flow eventually was diverted to treatment ponds to allow bank-to-bank extraction of sediment, debris and plants.
Under oversight of the U.S. Environmental Protection Agency, the U.S. Army Corps of Engineers and the Kansas Department of Health and Environment, TC Energy reopened the pipeline three weeks after the accident. Work to remove oil from within Mill Creek was concluded in May, allowing restoration plans to proceed.
“Starting restoration work in Mill Creek is a tremendous milestone and to meet that in five months highlights the commitment and dedication of response personnel,” said Meg McCollister, administrator for the EPA’s Region 7.
Large trucks have been hauling away polluted soil, while fresh topsoil has been transferred to the site. An attempt to reseed a portion of the slope sprayed with oil has been made. Areas close to the actual break last week still resembled a dirt-covered construction site.
In February, Calgary-based TC Energy attributed the failure to a faulty weld at a bend in the pipe. The weld was performed at a manufacturing plant to link two sections of pipe. TC Energy, which is responsible for inspections of the pipeline, said a progressive fatigue crack led to the largest onshore U.S. crude oil spill in nearly a decade.
Richard Prior, president of TC Energy’s Liquids Pipeline operations, said the company was confident in reliability of the 2,700-mile pipeline and “unwavering in our commitment” to repair the damage in Kansas.
An analysis of the pipe failure by RSI Pipeline Solutions of Columbus, Ohio, for the U.S. Department of Transportation’s Pipelines and Hazardous Materials Safety Administration indicated the break resulted from pipeline design issues, problems during pipeline construction and lapses by pipeline operators. That partially redacted report asserted TC Energy underestimated risk associated with deformed pipe. TC Energy excavated portions of the Keystone line in 2013 but didn’t replace all the disfigured pipe.
