Hazardous Materials Business Plan

The goal of the Hazardous Materials Business Plan (HMBP) program is to protect both human and environmental health from adverse effects as a result of the storage or possible release of those materials. This is done primarily by documenting significant amounts of hazardous materials so that emergency responders can effectively protect the public. HMBPs also satisfy Community Right-to-Know laws for public accessibility.


California Health and Safety Code, Division 20, Chapter 6.95, §25500-25519

California Code of Regulations, Title 19, Division 2, Chapter 4


Storage of any hazardous materials at or above State-defined thresholds makes a facility subject to the HMBP program. The general thresholds are 55 gallons of a liquid, 200 cubic feet of a gas, and 500 pounds of a solid. There are some exemptions to these thresholds.

The Hazardous Materials Compliance Division (HMCD) is responsible for the HMBP program within the cities of Los Altos, Los Altos Hills, Milpitas, Monte Sereno, Morgan Hill, San Jose, and Saratoga, as well as unincorporated areas of the County (including Moffett Field, San Martin, and Stanford). If your facility is located in a different city within the County, please refer to the Who Regulates What table​.

General Requirements

  • Electronically submit​ a Hazardous Materials Business Plan via the California Environmental Reporting System (CERS)
    • On CERS, this consists of three submittal elements: Facility Information (including Business Activities and Business Owner/ Operator Identification), Hazardous Materials Inventory (including site map/plan), and Emergency Response and Training Plans.
  • Emergency response plan training for personnel.
  • Pay an annual invoice to keep your permit active.

Forms & Documents


Fees are based upon the number of HMBP-reportable materials on-site. To see HMBP fees, please click here.

Frequently Asked Questions​​​​​

To view FAQs, click here.​

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