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What is a hazardous substance?

OSHA developed the HAZWOPER Standard to protect emergency responders, site cleanup workers, and others who may be exposed to "hazardous substances." In the HAZWOPER regulations, OSHA defines "hazardous substances" to include four categories:

"CERCLA Hazardous Substances"
(Listed in 40 CFR 302.4)

The Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) authorizes US EPA to maintain a list of substances that can damage the environment if released. The list of CERCLA hazardous substances includes hundreds of substances, from acetone and ammonia to xylene and zinc.

"Hazardous Materials"
(As defined by 49 CFR 171.8)

The US Department of Transportation (DOT) defines a “hazardous material” as any substance or material that meets one or more of the criteria of a Hazard Class or Division described in 49 CFR 173, or any material that does not meet those criteria but DOT deems a hazardous material (e.g., Class 9).

"Hazardous Waste"
(As defined by 40 CFR 261.3)

Under the Resource Conservation and Recovery Act (RCRA), a hazardous waste is a waste that either:

Exhibits one or more hazardous waste characteristics (ignitability, corrosivity, reactivity, or toxicity), or
Is described on one of the lists of hazardous wastes in the RCRA regulations (F, K, P & U).

"Biological agents"
and "other disease-causing agents"

Agents "...which after release into the environment and upon exposure, ingestion, inhalation, or assimilation into any person...will or may reasonably be anticipated to cause death, disease, behavioral abnormalities, cancer, genetic mutation, physiological malfunctions, or physical deformation..."

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This was the 1st instructor that has made the topic actually enjoyable and easy to follow and understand. Far better than the "other" training providers our company has attended!

Lori Hardy

Process & Resource Administrator

Lion was very extensive. There was a lot of things that were covered that were actually pertaining to what I do and work with. Great Job. I will be coming back in three years!

Tony Petrik

Hazmat Shipping Professional

The instructor was great, explaining complex topics in terms that were easily understandable and answering questions clearly and thoroughly.

Brittany Holm

Lab Supervisor

The course was very well structured and covered the material in a clear, concise manner.

Ian Martinez

Hazmat Shipping Professional

I can take what I learned in this workshop and apply it to everyday work and relate it to my activities.

Shane Hersh

Materials Handler

Lion's training was by far the best online RCRA training I've ever taken. It was challenging and the layout was great!

Paul Harbison

Hazardous Waste Professional

The training was impressive. I am not a fan of online training but this was put together very well. I would recommend Lion to others.

Donnie James

Quality Manager

We have a very busy work schedule and using Lion enables us to take the course at our own time. It makes it easy for me to schedule my employees' training.

Timothy Mertes

Hazmat Shipping Professional

The instructor took a rather drab set of topics and brought them to life with realistic real-life examples.

Tom Berndt

HSE Coordinator

I tried other environmental training providers, but they were all sub-standard compared to Lion. I will not stray from Lion again!

Sara Sills

Environmental Specialist

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Use this guide to spot which tanks and substances are regulated under EPA's Underground Storage Tank program, and which are excluded as of October 2018.

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