Lawsuit claims Oso mudslide was ‘man-made’

OSO — A new lawsuit filed over deaths and property destruction from last year’s catastrophic mudslide makes a startling claim.

It faults the state of Washington, Snohomish County and a private timber company for causing, “the worst man-made landslide in the history of this nation.”

Seattle attorney Karen Willie filed the suit on behalf of three families of people killed in the slide and others who lost property.

“I am certain that this is a man-made landslide — I don’t think it was an act of God,” Willie said.

The lawsuit doesn’t explain how that claim squares with the evidence geologists say exists of 15 other large slides in the valley over the past 6,000 years, occurring anywhere from 400 to 1,500 years apart. Slides on that particular stretch of hillside have been occurring at least back to the 1930s.

The March 22 disaster killed 43 people and destroyed about 40 houses in the Steelhead Haven neighborhood. The new Oso lawsuit is the third to date. Filed Jan. 21 in King County Superior Court, it seeks damages to be determined at trial.

Plaintiffs include the estates and relatives of John and Kris Regelbrugge; Lon Slauson; and Steve and Theresa Harris.

Three other sets of plaintiffs lost property: Henrietta Ottersen; Davis and Ruth Hargrave; and Irvin and Judith Wood.

The suit accuses the state Department of Natural Resources of negligence for issuing a logging permit in 2004 to Grandy Lake Forest Associates of Mount Vernon. The company’s 7.5-acre, pie-shaped clear-cut on top of the hillside played a major role in causing a 2006 slide that blocked the North Fork Stillaguamish River, the suit contends.

A DNR investigation concluded that permitting for the clear-cut was done properly, but that the company exceeded the approved size by an acre.

While there is less agreement on what caused the 2006 slide, recent scientific studies are in general agreement that it set the stage for catastrophe in 2014.

The suit accuses the state and Snohomish County of botching attempts to manage river flows through the area, including the use of a wooden crib wall at the toe of the slope. The state and county also failed to adequately investigate the 2006 slide or warn neighbors of the dangers, the suit argues.

Another prong in the lawsuit goes after the state for allowing what it describes as nuisance conditions on its property, which allowed soil and water to run onto the plaintiffs’ land.

Snohomish County was served with paperwork for the suit on Friday, chief civil deputy prosecutor Jason Cummings said. The county won’t comment on the pending litigation, but plans to put up a vigorous defense, Cummings said.

The suit draws from decades of scientific observations of 600-foot-tall Hazel hill, where the slide began.

“There were studies out there and people knew so much,” Willie said.

In 1947, a professor noted slumping blocks of soil on the hillside. A 1952 study suggested rerouting a stream called Headache Creek to improve the slope’s stability — at a cost then calculated at $5,400.

Steelhead Haven began getting built out in the 1960s, first as rudimentary fishing shacks.

A large landslide destroyed vacation cabins in the area in 1967. More studies followed.

Over time, more people began to settle the area as full-time residents.

In 1999, a now oft-cited study warned of a 900-foot runout — similar to what happened in 1967.

The damage last year — from the top of the scarp to its southernmost point — stretched 5,827 feet. That was the 10th slide to hit the same location, according to the lawsuit.

Of the two earlier suits over Oso deaths, the one representing the largest bloc of victims — 10 families — was filed in October. Like the current lawsuit, it faulted the state, the county and the same timber company.

The first lawsuit over the slide was filed in July.

Noah Haglund: 425-339-3465; nhaglund@heraldnet.com. Twitter: @NWhaglund.

Talk to us

> Give us your news tips.

> Send us a letter to the editor.

> More Herald contact information.

More in Local News

Traffic idles while waiting for the lights to change along 33rd Avenue West on Tuesday, April 2, 2024 in Lynnwood, Washington. (Olivia Vanni / The Herald)
Lynnwood seeks solutions to Costco traffic boondoggle

Let’s take a look at the troublesome intersection of 33rd Avenue W and 30th Place W, as Lynnwood weighs options for better traffic flow.

A memorial with small gifts surrounded a utility pole with a photograph of Ariel Garcia at the corner of Alpine Drive and Vesper Drive ion Wednesday, April 10, 2024 in Everett, Washington. (Olivia Vanni / The Herald)
Death of Everett boy, 4, spurs questions over lack of Amber Alert

Local police and court authorities were reluctant to address some key questions, when asked by a Daily Herald reporter this week.

The new Amazon fulfillment center under construction along 172nd Street NE in Arlington, just south of Arlington Municipal Airport. (Chuck Taylor / The Herald) 20210708
Frito-Lay leases massive building at Marysville business park

The company will move next door to Tesla and occupy a 300,0000-square-foot building at the Marysville business park.

Everett Mayor Cassie Franklin steps back and takes in a standing ovation after delivering the State of the City Address on Thursday, March 21, 2024, at the Everett Mall in Everett, Washington. (Ryan Berry / The Herald)
In meeting, Everett mayor confirms Topgolf, Chicken N Pickle rumors

This month, the mayor confirmed she was hopeful Topgolf “would be a fantastic new entertainment partner located right next to the cinemas.”

Alan Edward Dean, convicted of the 1993 murder of Melissa Lee, professes his innocence in the courtroom during his sentencing Wednesday, April 24, 2024, at Snohomish County Superior Court in Everett, Washington. (Ryan Berry / The Herald)
Bothell man gets 26 years in cold case murder of Melissa Lee, 15

“I’m innocent, not guilty. … They planted that DNA. I’ve been framed,” said Alan Edward Dean, as he was sentenced for the 1993 murder.

FILE - A Boeing 737 Max jet prepares to land at Boeing Field following a test flight in Seattle, Sept. 30, 2020. Boeing said Tuesday, Jan. 10, 2023, that it took more than 200 net orders for passenger airplanes in December and finished 2022 with its best year since 2018, which was before two deadly crashes involving its 737 Max jet and a pandemic that choked off demand for new planes. (AP Photo/Elaine Thompson, File)
Boeing’s $3.9B cash burn adds urgency to revival plan

Boeing’s first three months of the year have been overshadowed by the fallout from a near-catastrophic incident in January.

Police respond to a wrong way crash Thursday night on Highway 525 in Lynnwood after a police chase. (Photo provided by Washington State Department of Transportation)
Bail set at $2M in wrong-way crash that killed Lynnwood woman, 83

The Kenmore man, 37, fled police, crashed into a GMC Yukon and killed Trudy Slanger on Highway 525, according to court papers.

A voter turns in a ballot on Tuesday, Feb. 13, 2024, outside the Snohomish County Courthouse in Everett, Washington. (Annie Barker / The Herald)
On fourth try, Arlington Heights voters overwhelmingly pass fire levy

Meanwhile, in another ballot that gave North County voters deja vu, Lakewood voters appeared to pass two levies for school funding.

Judge Whitney Rivera, who begins her appointment to Snohomish County Superior Court in May, stands in the Edmonds Municipal Court on Thursday, April 18, 2024, in Edmonds, Washington. (Ryan Berry / The Herald)
Judge thought her clerk ‘needed more challenge’; now, she’s her successor

Whitney Rivera will be the first judge of Pacific Islander descent to serve on the Snohomish County Superior Court bench.

In this Jan. 4, 2019 photo, workers and other officials gather outside the Sky Valley Education Center school in Monroe, Wash., before going inside to collect samples for testing. The samples were tested for PCBs, or polychlorinated biphenyls, as well as dioxins and furans. A lawsuit filed on behalf of several families and teachers claims that officials failed to adequately respond to PCBs, or polychlorinated biphenyls, in the school. (AP Photo/Ted S. Warren)
Judge halves $784M for women exposed to Monsanto chemicals at Monroe school

Monsanto lawyers argued “arbitrary and excessive” damages in the Sky Valley Education Center case “cannot withstand constitutional scrutiny.”

Mukilteo Police Chief Andy Illyn and the graphic he created. He is currently attending the 10-week FBI National Academy in Quantico, Virginia. (Photo provided by Andy Illyn)
Help wanted: Unicorns for ‘pure magic’ career with Mukilteo police

“There’s a whole population who would be amazing police officers” but never considered it, the police chief said.

Officers respond to a ferry traffic disturbance Tuesday after a woman in a motorhome threatened to drive off the dock, authorities said. (Photo provided by Mukilteo Police Department)
Everett woman disrupts ferry, threatens to drive motorhome into water

Police arrested the woman at the Mukilteo ferry terminal Tuesday morning after using pepper-ball rounds to get her out.

Support local journalism

If you value local news, make a gift now to support the trusted journalism you get in The Daily Herald. Donations processed in this system are not tax deductible.