Steve Skaglund walks across rubble a few days after the fatal mudslide near Oso in March 2014. (Genna Martin / Herald file)

Steve Skaglund walks across rubble a few days after the fatal mudslide near Oso in March 2014. (Genna Martin / Herald file)

State’s experts destroyed Oso mudslide records, lawyers say

OSO — Lawyers for people harmed by the Oso mudslide on Tuesday accused scientists and engineers hired by the state of deliberately destroying records that could be used to raise questions about their expected testimony regarding the disaster’s cause.

The state’s experts have acknowledged that for nearly a year and a half they’ve routinely destroyed emails discussing their multi-disciplinary effort to determine whether human actions somehow contributed to the hill’s collapse in 2014.

State attorneys received subpoenas seeking the emails, but the plaintiffs’ attorneys were told they didn’t exist.

In recent weeks, however, the lawyers stumbled upon emails that one of the experts didn’t delete. In depositions earlier this month, the experts acknowledged they’d been destroying the records routinely as part of their strategy for reaching conclusions about the mudslide, which killed 43 people.

The Oso mudslide litigation is often described as the biggest wrongful death case in Washington’s history, Seattle attorneys Guy Michelson, Emily Harris, Corrie Yackulic, John Phillips and Loren Cochran said in court papers.

“It has now become apparent that this case will also be known as the biggest discovery fraud in the history of the state — a fraud orchestrated by the state’s own Attorney General,” the lawyers wrote.

Attorney General Bob Ferguson’s office wasn’t ready to respond to the allegations on Tuesday afternoon.

“The Attorney General’s Office received the plaintiffs’ 30-page motion a few hours ago,” spokesman Peter Lavallee said. “Our legal team will review the filing and respond soon to the court. Our response will be made public at that time.”

The plaintiffs have asked King County Superior Court Judge Roger Rogoff to sanction the state, including a ruling that would decide the case in their favor without trial, which is now scheduled to begin this fall.

The trial had been set for this summer, but was rescheduled to allow more time to consider what the state experts found after they conducted drilling and other analysis over the past year.

The experts’ work reportedly challenged some widely held theories about the geologic makeup of the hillside and the allegation that logging over the years made it dangerously soggy and prone to collapse. Scientific studies conducted since 2014 have found signs that similar giant slides have occurred repeatedly in that stretch of the North Fork Stillaguamish River Valley since the Ice Age.

In paperwork filed weeks ago, state experts said they planned to offer no conclusion on the slide’s cause, but they made clear they are prepared to testify that logging wasn’t a significant factor. They also said drilling has shown the rain that soaked into the hillside didn’t drain into the slide.

The state’s experts concluded the hillside was so geologically complex as to preclude “any reasonable predictability of the timing of a long-runout landslide within the perspective of a human lifetime,” court papers show.

The plaintiffs’ attorneys on Tuesday said they believe those opinions don’t reflect science, but instead a willingness on the experts’ behalf to tailor opinions to “best protect the state’s interest in this litigation.”

“We know this is true only because some of those emails slipped through the cracks and were not destroyed as they were intended to be,” they wrote.

They said there is evidence to suggest the experts at one point were prepared to opine that human actions had made the hillside more dangerous. They asked the judge to impose a sanction of finding the state was negligent, and should have known that its property was more dangerous because of man-made alterations.

They also said the state should be barred from calling its experts to testify, among other punishments.

“The state has spent over $3 million in taxpayer dollars developing the opinions of its expert team, but that undertaking was launched 17 months ago with a secret pact by the state’s experts, with the blessing of the state Attorney General, to systematically destroy emails and repeatedly deceive the plaintiffs about what they were doing,” the lawyers wrote. “Rather than an investigation to find the truth, the undertaking of the state’s expert team has been a carefully orchestrated scheme to hide and distort the truth.”

The state, Snohomish County and the Grandy Lake Forest Associates timber company all are named as defendants.

Tuesday’s motion came after the judge’s Aug. 11 dismissal of most of the claims against the county. The ruling affected about a dozen slide survivors as well as legal claims linked to 28 people who lost their lives.

The judge dismissed the claims after the county prevailed in a series of pre-trial skirmishes that focused on its potential legal culpability. The court found that only a handful of the plaintiffs could pursue claims that the county had failed to adequately warn them of risks.

The county Monday acknowledged that it may spend up to $5.5 million for outside legal counsel on the litigation.

The County Council approved a contract amendment Monday with a 3-0 vote. It was the fourth time the council has authorized paying more money to the outside legal team it hired for the case.

Scott North: 425-339-3431; north@heraldnet.com. Twitter: @snorthnews.

Talk to us

> Give us your news tips.

> Send us a letter to the editor.

> More Herald contact information.

More in Local News

Janet Garcia walks into the courtroom for her arraignment at the Snohomish County Courthouse on Monday, April 22, 2024 in Everett, Washington. (Olivia Vanni / The Herald)
Everett mother found competent to stand trial in stabbing death of 4-year-old son

A year after her arraignment, Janet Garcia appeared in court Wednesday for a competency hearing in the death of her son, Ariel Garcia.

Everett council member to retire at end of term

Liz Vogeli’s retirement from the council opens up the race in the November election for Everett’s District 4 seat.

Washington State Department of Commerce Director Joe Nguyễn speaks during the Economic Alliance Snohomish County’s Annual Meeting and Awards events on Tuesday, April 22, 2025 in Tulalip, Washington. (Olivia Vanni / The Herald)
Commerce boss: How Washington state can make it easier for small businesses

Joe Nguyen made the remarks Wednesday during the annual meeting of the Economic Alliance Snohomish County and the Snohomish County Awards

LifeWise local co-directors Darcie Hammer and Sarah Sweeny talk about what a typical classroom routine looks like on Monday, April 14, 2025 in Everett, Washington. (Olivia Vanni / The Herald)
Everett off-campus Bible program draws mixed reaction from parents

The weekly optional program, LifeWise Academy, takes children out of public school during the day for religious lessons.

An EcoRemedy employee checks a control panel of their equipment at the Edmonds Wastewater Treatment Plant on Thursday, April 17, 2025 in Edmonds, Washington. (Olivia Vanni / The Herald)
Edmonds launches technology to destroy PFAS

Edmonds is the first city in the country to implement… Continue reading

Mary Ann Karber, 101, spins the wheel during Wheel of Forunte at Washington Oakes on Tuesday, April 1, 2025 in Everett, Washington. (Olivia Vanni / The Herald)
Lunch and Wheel of Fortune with some Everett swinging seniors

She’s 101 and he’s 76. At Washington Oakes, fun and friendship are on the menu.

Members of the Washington Public Employees Association will go without a wage hike for a year. They turned down a contract last fall. They eventually ratified a new deal in March, lawmakers chose not to fund it in the budget. (Jerry Cornfield/Washington State Standard)
Thousands of Washington state workers lose out on wage hikes

They rejected a new contract last fall. They approved one in recent weeks, but lawmakers said it arrived too late to be funded in the budget.

Founder of Faith Lutheran Food Bank Roxana Boroujerd helps direct car line traffic while standing next to a whiteboard alerting clients to their date of closing on Friday, April 25, 2025 in Everett, Washington. (Olivia Vanni / The Herald)
Faith Food Bank to close, replacement uncertain

The food bank’s last distribution day will be May 9, following a disagreement with the church over its lease.

Christian Sayre sits in the courtroom before the start of jury selection on Tuesday, April 29, 2025 in Everett, Washington. (Olivia Vanni / The Herald)
Jury selection begins in latest trial of former Everett bar owner

Opening statements for Christian Sayre’s fourth trial are scheduled for Monday. It is expected to conclude by May 16.

Ian Terry / The Herald

Zachary Mallon, an ecologist with the Adopt A Stream Foundation, checks the banks of Catherine Creek in Lake Stevens for a spot to live stake a willow tree during a volunteer event on Saturday, Feb. 10. Over 40 volunteers chipped in to plant 350 trees and lay 20 cubic yards of mulch to help provide a natural buffer for the stream.

Photo taken on 02102018
Snohomish County salmon recovery projects receive $1.9M in state funding

The latest round of Climate Commitment Act dollars will support fish barrier removals and habitat restoration work.

Fosse will not seek reelection; 2 candidates set to run for her seat

Mason Rutledge and Sam Hem announced this week they will seek the District 1 City Council position.

A few significant tax bills form the financial linchpin to the state’s next budget and would generate the revenue needed to erase a chunk of a shortfall Ferguson has pegged at $16 billion over the next four fiscal years. The tax package is expected to net around $9.4 billion over that time. (Stock photo)
Five tax bills lawmakers passed to underpin Washington’s next state budget

Business tax hikes make up more than half of the roughly $9 billion package, which still needs a sign-off from Gov. Bob Ferguson.

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.