Directorate of Public Works (DPW) » Environmental Division »
Hazardous Material Management
Hazardous Material is any material that, based on either its physical or chemical characteristics (corrosive, explosive, flammable, reactive, toxic), is capable of posing an unreasonable risk to human health or the environment if improperly disposed of, handled, stored, or transported.
| Flammable | Explosive | Corrosive | Irritant/Sensitizing | Toxic |
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| Oxidizing | Compressed Gases | Harmful to Health | Dangerous to the Environment |
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These symbols were introduced in accordance with the globally harmonized system of classification and labeling of chemicals (GHS). For further information please see the GHS Flyer
or visit the Occupational Safety and Health Administration (OSHA) web page.
The Environmental Division and the Safety Office have technical information available on how to use and dispose of hazardous materials and wastes properly:

















