Chemistry labs, companies that want to get rid of expensive to dispose of chemicals? A lab I worked for was caught decades ago (before my time) because bottles

Chemistry labs, companies that want to get rid of expensive to dispose of chemicals? A lab I worked for was caught decades ago (before my time) because bottles of chemicals were found in a rogue landfill with the name of the lab on them that allowed to track the origin. Turns out the chemical waste company didn't do the job it was paid for.