Definitions and terminology

The terms that turn up on a quote, in an insurance claim, or on a state form — usually at a moment when nobody has the patience to look them up.

Why the definitions matter more here than usual

Two words in this field carry a legal meaning that differs sharply from everyday use, and both decide money.

“Biohazard” in ordinary speech means anything biological that could make you ill. In US workplace law it means a specific, much shorter list. The gap is where overcharging lives, and where a reader who knows the difference can ask a better question.

“Cleanup” sounds like one service. In practice it splits into remediation — removing contamination — and restoration, putting the room back. A quote that blurs the two is where claim disputes start.

The terms worth knowing before you make a call

A Certificate of Treatment is what your insurer and your state compensation program will ask for. Regulated waste is the category that decides how material must leave the property. UN 3291 is the shipping classification it travels under. Covered peril is the thing your policy actually insures against — not “cleanup”. Payer of last resort is what every state compensation program is, which is why you file the insurance claim too. And assignment of benefits is the document you should not sign on a doorstep.

How we define things here

Short. Under forty words where possible, in plain language, and with the practical consequence attached rather than left implied. Where a term has a legal definition we quote the standard rather than paraphrase it, and where we could not verify a definition we say so instead of filling the gap.