According to the Environmental Protection Agency (EPA), hazardous waste is generally classified into four main categories:

1. Characteristic Wastes: These exhibit at least one of four hazardous traits: ignitability (flammable, like gasoline), corrosivity (can rust or decompose materials, like car batteries), reactivity (unstable and can explode, like aerosol cans), or toxicity (harmful when ingested, like lead-based paint).

2. Listed Wastes: These are specific wastes from manufacturing and industrial processes that the EPA has officially designated as hazardous. They include byproducts from processes that use solvents, pesticides, and other chemicals.

3. Universal Wastes: These are commonly generated hazardous items that are subject to streamlined regulations. Examples include batteries, pesticides, mercury-containing equipment (e.g., bulbs), and some lamps.

4. Mixed Wastes: This category includes waste that contains both hazardous and radioactive components, making it subject to regulation by both the EPA and the Nuclear Regulatory Commission.

You can paint over lead paint, or “encapsulate” it with a special paint that includes an ingredient called an encapsulant. The EPA approves encapsulation as a lead paint removal method as long as the paint remains undisturbed. Standard types of paint without an “encapsulant” from the big box stores or hardware stores do not meet EPA standards for remediation of lead-based paint.

No, you can’t place hazardous waste in a dumpster unless you specifically ordered a dumpster for hazardous waste removal. If the dumpster company finds hazardous waste that it didn’t approve for dumping, the company will return the waste to you, and you’ll likely face a fine for illegal dumping.

Chlorine has a shelf life of between six months and several years, depending on its type and formulation. Liquid chlorine can often lose its effectiveness in just a few weeks. Pool owners can find themselves with overstock that they need to get rid of. The best way to dispose of excess chlorine is to take it to a hazardous waste collection site and let the pros handle it.