Guide hub

EPCRA Tier II and TRI guides

Chemical inventories, March 1 Tier II packets, and the records responders and regulators expect.

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Questions this hub answers

Which hazardous-chemical inventory details should be gathered before March 1?
Does the portal distribute the filing, or are separate recipients still required?
Could the same chemical profile point to TRI reporting later in the year?

Run the checker

Check EPCRA and TRIUse chemical-storage and business facts to review Tier II and TRI filing signals.Check chemical inventoryStart from the unified checker before reviewing any chemical-inventory packet.

EPCRA review packet

Chemical names, CAS numbers, maximum and average quantities, and storage locations by facility
SDS files, hazard categories, site map context, and emergency-contact details
Portal receipts, recipient-delivery notes, and the inventory snapshot used for the filing period

Explainers

July 9, 2026 · 6 min read

EPCRA Tier II checklist: what to gather before the March 1 deadline

A practical EPCRA Tier II checklist for facilities screening chemical thresholds and gathering inventory, contacts, storage, and state portal details before March 1.

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