Hazardous Waste Classification

Waste is considered regulated hazardous waste if it meets any of the following:

• On the F-list (non-specific source waste) See F-List Hazardous Wastes
• On the P-list or U-list (discarded commercial chemical products) See P & U-List Hazardous Wastes
• Exhibit any characteristic of hazardous waste as described below (ignitable, corrosive, reactive, toxic)     

Characteristic Waste

Waste is regulated as hazardous if it meets any of the following characteristics.

Hazardous: Ignitable

• A liquid with a flash point less than 60 degrees Centigrade
• A solid capable under normal conditions of causing fire through friction, absorption of moisture or spontaneous chemical changes
• A flammable compressed gas
• An oxidizer

Hazardous: Corrosive

• An aqueous with pH less than or equal to 2, or greater than or equal to 12.5
• A liquid that corrodes steel at a rate greater than 0.250 inches per year at 55 degrees Centigrade

Hazardous: Reactive

• Is unstable and readily undergoes violent change without detonating
• Reacts violently with water
• Forms potentially explosive mixtures with water
• Upon mixture with water generates toxic gases, vapors or fumes
• Generates toxic gases, vapors or fumes at pH conditions between 2 and 12.5
• Capable of detonation or explosive decomposition
• Classified as a Department of Transportation explosive

Hazardous: Toxicity Characteristic

• The waste contains certain metals, pesticides or selected organics above specified levels.  See List of Toxic Characteristic Wastes.
• if it is otherwise capable of causing environmental or health damage if improperly disposed (this judgment is based on knowledge of the material).