# California — EPCRA Tier II hazardous chemical inventory reporting thresholds by state For California, general hazardous chemical threshold is 55 gallons (liquids), 500 pounds (solids), 200 cubic feet (compressed gasses); ehs threshold is 500 pounds or the TPQ, whichever is lower (federal); special categories or chemicals is Any quantity of hazardous waste; report name is Hazardous Materials Business Plan; filing deadline is March 1, recorded from its source on 2026-08-15. - **State:** California _(verified: appears in the quote below)_ - **General hazardous chemical threshold:** 55 gallons (liquids), 500 pounds (solids), 200 cubic feet (compressed gasses) _(verified: appears in the quote below)_ - **EHS threshold:** 500 pounds or the TPQ, whichever is lower (federal) - **Special categories or chemicals:** Any quantity of hazardous waste _(verified: appears in the quote below)_ - **Report name:** Hazardous Materials Business Plan _(verified: appears in the quote below)_ - **Filing deadline:** March 1 _(our reading, not quoted from the source)_ ## What the source says > California, the hazardous materials report is called a Hazardous Materials Business Plan and is significantly more in-depth than a standard Tier II report. The reporting thresholds for California are: 55 gallons (liquids) 500 pounds (solids) 200 cubic feet (compressed gasses) Any quantity of hazardous waste ## Sources disagree More than one authority states this, and they do not state the same thing. Both are reproduced with the source each came from. ### General hazardous chemical threshold uscompliance.com says general hazardous chemical threshold is **55 gallons (liquids), 500 pounds (solids), 200 cubic feet (compressed gasses)**, as of 2026-08-15. > California, the hazardous materials report is called a Hazardous Materials Business Plan and is significantly more in-depth than a standard Tier II report. The reporting thresholds for California are: 55 gallons (liquids) 500 pounds (solids) 200 cubic feet (compressed gasses) Any quantity of hazardous waste Source: https://www.uscompliance.com/blog/hazardous-material-storage-reports-with-non-federal-thresholds/ edge-es.com says general hazardous chemical threshold is **500 pounds for solids, 55 gallons for liquids, 200 cubic feet for compressed gases**, as of 2026-08-15. > California: 500 pounds for solids 55 gallons for liquids 200 cubic feet for compressed gases Report deadlines can vary depending on the local CUPA. Submissions are part of the broader Hazardous Materials Business Plan (HMBP) under CERS. Source: https://edge-es.com/epcra-tier-ii-reporting-state-by-state-requirements/ ### Special categories or chemicals uscompliance.com says special categories or chemicals is **Any quantity of hazardous waste**, as of 2026-08-15. > California, the hazardous materials report is called a Hazardous Materials Business Plan and is significantly more in-depth than a standard Tier II report. The reporting thresholds for California are: 55 gallons (liquids) 500 pounds (solids) 200 cubic feet (compressed gasses) Any quantity of hazardous waste Source: https://www.uscompliance.com/blog/hazardous-material-storage-reports-with-non-federal-thresholds/ edge-es.com says special categories or chemicals is **Report deadlines can vary depending on the local CUPA**, as of 2026-08-15. > California: 500 pounds for solids 55 gallons for liquids 200 cubic feet for compressed gases Report deadlines can vary depending on the local CUPA. Submissions are part of the broader Hazardous Materials Business Plan (HMBP) under CERS. Source: https://edge-es.com/epcra-tier-ii-reporting-state-by-state-requirements/ ### Report name uscompliance.com says report name is **Hazardous Materials Business Plan**, as of 2026-08-15. > California, the hazardous materials report is called a Hazardous Materials Business Plan and is significantly more in-depth than a standard Tier II report. The reporting thresholds for California are: 55 gallons (liquids) 500 pounds (solids) 200 cubic feet (compressed gasses) Any quantity of hazardous waste Source: https://www.uscompliance.com/blog/hazardous-material-storage-reports-with-non-federal-thresholds/ edge-es.com says report name is **Hazardous Materials Business Plan (HMBP)**, as of 2026-08-15. > California: 500 pounds for solids 55 gallons for liquids 200 cubic feet for compressed gases Report deadlines can vary depending on the local CUPA. Submissions are part of the broader Hazardous Materials Business Plan (HMBP) under CERS. Source: https://edge-es.com/epcra-tier-ii-reporting-state-by-state-requirements/ ### Filing deadline uscompliance.com says filing deadline is **March 1**, as of 2026-08-15. > California, the hazardous materials report is called a Hazardous Materials Business Plan and is significantly more in-depth than a standard Tier II report. The reporting thresholds for California are: 55 gallons (liquids) 500 pounds (solids) 200 cubic feet (compressed gasses) Any quantity of hazardous waste Source: https://www.uscompliance.com/blog/hazardous-material-storage-reports-with-non-federal-thresholds/ edge-es.com says filing deadline is **Varies by local CUPA**, as of 2026-08-15. > California: 500 pounds for solids 55 gallons for liquids 200 cubic feet for compressed gases Report deadlines can vary depending on the local CUPA. Submissions are part of the broader Hazardous Materials Business Plan (HMBP) under CERS. Source: https://edge-es.com/epcra-tier-ii-reporting-state-by-state-requirements/ ## Source - https://www.uscompliance.com/blog/hazardous-material-storage-reports-with-non-federal-thresholds/ - https://edge-es.com/epcra-tier-ii-reporting-state-by-state-requirements/ Last verified: 2026-08-15. Review by: 2027-08-15. Part of [EPCRA Tier II hazardous chemical inventory reporting thresholds by state](https://referencesource.org/epcra-tier-ii-state-reporting-thresholds/).