November 10, 2025
A California federal judge refused to approve a $57 million settlement the U.S. government proposed to resolve whistleblower claims alleging Tetra Tech EC Inc. defrauded the Navy on radiation cleanup work at the former Hunters Point Naval Shipyard in San Francisco.
March 27, 2025
Seven whistleblowers told a California federal judge on Thursday they deserve a cut of the total $97 million settlement the government inked over allegations a Tetra Tech unit billed the Navy for radiation remediation that was not done, and not a smaller share covering only the government's False Claims Act claims.
January 21, 2025
The U.S. Navy and a Tetra Tech unit have reached two settlements amounting to $97 million, resolving claims the subsidiary billed the Navy for radiation remediation services at a former Navy shipyard in San Francisco that it did not actually perform.
August 26, 2024
Tetra Tech EC Inc. claimed that an attorney representing a developer accusing it of fraud had mistreated a witness during a deposition hearing, pressing a California federal court to order the release of recordings capturing the alleged misconduct.
June 07, 2024
Tetra Tech and a subsidiary accused the federal government and a housing developer of a "fishing expedition" after they sought access to electronic media long after discovery closed in cases accusing the subsidiary of fraud under Navy environmental contracts.
August 27, 2020
A subcontractor of Tetra Tech was "up to its neck" in its effort to help the engineering firm defraud the Navy out of hundreds of millions of dollars for environmental remediation that was never done, a California federal court has been told.
October 28, 2019
The San Francisco federal judge overseeing an environmental cleanup suit against Tetra Tech said the company's claims that he is prejudiced against it "border on frivolous" because they mostly rely on a single sentence in a remand order.
September 12, 2019
The U.S. government urged a California federal court not to free Tetra Tech from its lawsuit over falsified soil samples, arguing that the company improperly used an internal investigation to discredit its false claims allegations.
May 10, 2019
A group of whistleblowers urged a California federal court to reject a Tetra Tech unit's bid to toss their complaint accusing it of charging the U.S. Navy for radiation cleanup services at a former Navy shipyard that it didn't perform, in violation of the False Claims Act.
April 30, 2019
The government has pushed back against a Tetra Tech unit's bid to toss a False Claims Act suit that accuses the subsidiary of charging the U.S. Navy for radiation cleanup services it didn't perform at a former Navy shipyard in San Francisco.