A judge has ruled that complaints that the “Diesel Brothers” modified and sold trucks that violated the Clean Air Act and Utah law are true.

According to FOX 13, a complaint that was filed in 2016 by Utah Physicians for a Healthy Environment President Brian Moench stated the “Diesel Brothers” — known for their reality TV show on the Discovery Channel — were illegally removing pollution control equipment from their trucks, installing defective emission control parts and either selling or operating those trucks.

“They’re well known and their calling card is dismantling diesel control devices for trucks,” Moench told FOX 13. “These are monster trucks that are putting out monster quantities of pollution.”

Moench believed that without the proper pollution control equipment, the trucks were producing 30 to 40 times more air pollution, causing a public health issue.

Cole Cannon, the attorney for the “Diesel Brothers,” said the environment is an important thing to them and their fan base, and most are huge outdoorsmen. Cannon explained 17 trucks were found with emission control issues. However, he claims not all of them were tampered by the “Diesel Brothers."

As for the ones that were tampered by the “Diesel Brothers,” Cannon says they will do better and hopes the community remembers all the good they have done for the community.

Moench said the ruling was a good beginning in the fight against companies who are damaging the air quality.

“It’s a win for all Utah citizens especially those on the Wasatch front,” he said.

Editor’s note: The Salt Lake Tribune and FOX 13 are content-sharing partners.