EPCRA Tier II 2026 Prep: 5 Reporting Mistakes to Fix Before March 1

Frequently Asked Questions

When is the Tier II report due?

Tier II reports are generally due by March 1 each year for the previous calendar year. The article recommends completing a documented audit before that deadline.

What quantity should we use for Tier II threshold calculations?

Use the maximum amount physically on site at one time during the reporting year, not total annual purchases. The article recommends building that number from receiving, storage, and transfer records.

Why are mixtures a common Tier II reporting problem?

Facilities often track the product name but do not consistently evaluate the hazardous components inside the product. The article highlights mixture method consistency and EHS substance review as key audit steps.

Do secondary containers matter for Tier II prep?

Yes. Secondary containers can reveal chemicals that have moved into work areas without being reflected in the central inventory, which is why the article recommends checking labels and work-area storage during the audit.

What should we verify about emergency contacts before filing?

Confirm that the primary and alternate contacts are still employed, reachable after hours, and familiar with site hazards and layout. Also verify that the local submission and planning contact information is current for your jurisdiction.