Appendix H — HAZARDOUS MATERIALS MANAGEMENT PLANS AND HAZARDOUS MATERIALS INVENTORY STATEMENTS
H2 Hazardous Materials Inventory Statements (hmis) — 2025 California Fire Code
California Fire Code (Title 24, Part 9) · 2025 edition · updated 2026-09-25 · California
CBSC: official editions, supplements and errata
Italicized text is a California amendment to the model code, as printed in the official publication.
Cite as: 2025 California Fire Code (Title 24, Part 9) § H2 · Effective January 1, 2026 · Official source: Building Standards Commission
H2.1 When Required. A separate HMIS shall be provided for each building, including its appurtenant structures, and each exterior facil- ity in which hazardous materials are stored.
The hazardous materials inventory statement shall list, by hazard class, all hazardous materials stored. The hazardous materials inventory statement shall include the following information for each hazardous material listed:
1. Hazard class.
2. Common or trade name.
3. Chemical name, major constituents and concentrations if a mixture. If a waste, the waste category. 4. Chemical Abstract Service number (CAS number) found in 29 Code of Federal Regulations (C.F.R.). 5. Whether the material is pure or a mixture, and whether the material is a solid, liquid or gas. 6. Maximum aggregate quantity stored at any one time. 7. Storage conditions related to the storage type, temperature and pressure.
H2.2 Changes to HMIS. An amended HMIS shall be provided within 30 days of the storage of any hazardous materials which changes or adds a hazard class or which is sufficient in quantity to cause an increase in the quantity which exceeds 5 percent for any hazard class.
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