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Hazardous Materials Business Plans (HMBP)

Hazardous Materials Business Plans (HMBP's) exist in order to provide the public, emergency responding agencies, and local government agencies information regarding the potential for hazardous chemical situations in the community. HMBP's aid in:

  • Emergency planning
  • Emergency release notification
  • Chemical storage reporting
  • Toxic chemical release inventory reporting.

HMBP's are part of the "Community Right-to-Know Act". For more information, please visit the California Office of Emergency Services (CalOES).

Threshold Quantities

A business is required to have an HMBP if its inventory exceeds any of these threshold quantities:

  • Solids - 500 lbs. or more
  • Liquids - 55 gallons or more
  • Compressed Gasses - 200 Cubic Feet or more
  • Extremely Hazardous Substances - Applicable Federal threshold quantities for extremely hazardous substances are specified in 40 CFR Part 355, Appendix A or B
  • Radiological Materials - Quantities for which an emergency plan is required are specified in 10 CFR Parts 30, 40, and 70.

Please use our CERS Guidance Document for Businesses to assist you in submission of your HMBP.

HMBP Resources

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