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Wednesday, March 29, 2023

Hazardous Materials Disclosure

Hazardous Materials Business Plan


A major requirement of the Hazardous Materials Disclosure program is the creation and maintenance of a Hazardous Materials Business Plan (HMBP). The information from the HMBP is made available to first responders in the county for emergency response activities. All handlers are required to disclose their inventory of hazardous materials in the form of a HMBP. The chemical inventory and HMBP must now be reported electronically. Please use the link to the left to submit your HMBP electronically.

Chemical Inventory

Generally speaking, a Hazardous Materials Handler is identified as any facility storing hazardous materials and or wastes in quantities greater than or equal to:

  • 55 gallons of a liquid substance
  • 500 pounds of a solid substance
  • 200 cubic feet of compressed gas

Please note that for acutely or extremely hazardous materials, these amounts are less.


No Need To Hire A Trainer!


Important Notes

The Hazardous Materials Business Plan program is implemented by the City of Riverside Fire Department for all facilities located within the incorporated limits of the City of Riverside. The City of Corona Fire Department implements the Hazardous Materials Business Plan program within the incorporated limits of the city of Corona. Please contact the appropriate city fire agency if your facility is located within the aforementioned city limits.


As of January 1, 2018, all California regulated businesses must use the new Federal Hazard Categories to prepare the Hazardous Materials Inventory submittal in CERS, and must complete the submittal by December 31st or their annual submission deadline - whichever is first. 

Further information is available online:


Riverside Fire Department Patch
Corona Fire Department


Certain facilities may be regulated under the US EPA’s Toxic Release Inventory (TRI) program in addition to being regulated under the Riverside County Disclosure program. A listing of chemicals covered by the TRI program can be found here and generally include those substances which can cause cancer or chronic human health effects, can cause adverse acute human health effects, or can cause significant adverse environmental effects.

TRI tracks the management of certain toxic chemicals that may pose a threat to human health and the environment. U.S. facilities in different industry sectors must report annually how much of each chemical is released to the environment and/or managed through recycling, energy recovery and treatment.

From the US Environmental Protection Agency

Is your facility required to report to the Toxics Release Inventory?

Facilities must report annually by July 1st if they:EPA Logo



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