The cornerstone of a successful hazardous waste management system is the proper identification of hazardous wastes. RCRA regulations at 40 CFR 262.11 require that any person who produces or generates a waste must determine if that waste is hazardous. 262.11 also provides four steps for generators to utilize in the process of hazardous waste identification. These are:
So, in order to properly identify hazardous waste, it stands to reason that we should work our way through those four points.
As with many things, the first step in hazardous waste identification is pretty intuitive. We must first determine if the material is a waste. After all, if it is not a waste it can’t be a hazardous waste. That said, determining whether or not something is a waste can get tricky. Take glass bottles for example, one person could see them as something to discard while another may see them as valuable due to their ability to be recycled.
Because of this ambiguity, the EPA developed a set of regulations to assist in determining whether or not a material is a waste. RCRA uses the term “solid waste” in place of “waste. Under RCRA, the term “solid waste” means any waste, whether it is a solid, semisolid, or liquid. The first section of the RCRA hazardous waste identification regulations focuses on the definition of solid waste and is a good place to look if you are confused about this step.
While solid wastes are rather abundant, just a small percentage of them qualify as hazardous wastes. You might think that distinguishing between hazardous and nonhazardous wastes is a simple matter of chemical and toxicological analysis. This, however, is not the case. We must first consider other factors before evaluating the hazard posed by the chemical composition of a waste.
Due to the fact that regulating some wastes may be impractical, unfair, or otherwise undesirable, the EPA has created exclusions. Household waste, for example, can contain dangerous chemicals, like solvents and pesticides, but making households subject to the strict RCRA waste management regulations would create a number of practical problems. Congress and EPA exempted or excluded certain wastes, like household wastes, from the hazardous waste definition and regulations.
Determining whether or not a waste is excluded or exempted from hazardous waste regulation is the second step in the RCRA hazardous waste identification process. Only after determining that a solid waste is not somehow excluded from hazardous waste regulation should the analysis proceed to evaluate the actual chemical hazard that a waste poses. Check 40 CFR to see if the waste you generate is excluded for any reason.
The EPA has studied hundreds of different waste streams and listed the wastes accordingly. Listed wastes are described or listed on four different lists that can be found at 40 CFR 261, Subpart D. These four lists are:
The third step in hazardous waste identification is determining which (if any) of these lists your waste belongs on.
We’ve talked about the characteristics of hazardous waste before. There are four different characteristics; ignitability, corrosivity, reactivity, and toxicity. If you need a refresher on the definitions of these characteristics check out our “Characteristics of Hazardous Waste,” post or our infographic depicting them.
The final step in the hazardous waste identification process is determining if your waste displays any of the four hazardous waste characteristics.
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