Tier II report

The annual inventory of hazardous chemicals a facility held during the previous calendar year, filed under EPCRA Section 312.

A Tier II report lists the hazardous chemicals a facility stored above reporting thresholds at any point during the previous calendar year, along with maximum and average daily amounts, how they were stored, and where on site they sat.

The federal deadline is March 1 each year, covering the year just ended. Reports go to the State Emergency Response Commission, the Local Emergency Planning Committee, and the local fire department, not to EPA.

The word "Tier II" refers to the level of detail: Tier I is an aggregate summary by hazard category, Tier II is the chemical-by-chemical detail. In practice almost every state requires Tier II, so the distinction rarely comes up.

Related terms

• EPCRA Section 312The annual hazardous chemical inventory requirement, the section the Tier II report is filed under.
• March 1 deadlineThe annual due date for Tier II reports covering the previous calendar year.
• SERCThe state body that receives EPCRA filings and oversees local emergency planning committees.
• LEPCThe local body that develops emergency response plans using the chemical data facilities report.
• Reporting thresholdThe quantity at which a chemical becomes reportable: 10,000 lb for most, lower for Extremely Hazardous Substances.

A plain-English explanation, not legal advice. Figures are the federal baseline; your state may differ, so see the state-by-state requirements.