A "Hazardous material" refers to any substance whose physical or chemical characteristics have the potential to endanger human well-being and/or environmental health upon release into the workplace or environment. The requirements of these mandates differ based on the jurisdiction of the local Certified Unified Program Agency (CUPA).

A HMBP is a document containing detailed information on the:

• Inventory of hazardous materials at a facility.
• Emergency response plans and procedures in the event of a reportable release or threatened release of a hazardous material.
• Training for all new employees and annual refresher training about safety procedures in the event of a release or threatened release of a hazardous material.
• A site map that contains the following: north orientation, loading areas and use of hazardous materials, internal roads, adjacent streets, storm and sewer drains, internal roads, access and exit points, emergency shutoffs, evacuation staging areas, hazardous material handling and storage areas, and emergency response equipment.

HMBPs are required for any business that uses or stores Hazardous Materials that meet or exceed these quantities at any one time.

NOTE: Minimum quantity reporting depends on the local regulating CUPA:

• 55 Gallons of liquid (one drum)
• 200 Cubic Feet of compressed gasses
• 500 Pounds of solids