Tier II, TRI and EPCRA reporting guides

Published by Vertexium Environmental Solutions LLC · Last updated October 9, 2026

Practical answers to the questions facilities ask most about EPCRA reporting. Each guide cites EPA, the Code of Federal Regulations or the state agency.

• Tier II reporting: what it is, who files, and when

  Plain-English guide to EPCRA Tier II reporting: which facilities must file, the thresholds, what the report contains, and the March 1 deadline.

• Tier II reporting thresholds, with worked examples

  Tier II thresholds: 10,000 lb, 500 lb or TPQ for EHSs, retail fuel exceptions, mixtures, and diesel, propane and lead-acid battery examples.

• Threshold Planning Quantity (TPQ), explained

  What a Threshold Planning Quantity is, how it sets Tier II and EPCRA 302 duties for Extremely Hazardous Substances, and how it differs from an RQ.

• Tier II deadline: March 1, and what late filing can cost

  Tier II is due March 1 each year for the prior calendar year. Other EPCRA timelines, Texas dates, and EPA's current maximum penalty of $71,545.

• Tier2 Submit: EPA's free Tier II software, explained

  What EPA's Tier2 Submit software does, which version to use, how to import last year's data, whether your state accepts it, and where to get help.

• Texas Tier II reporting: TCEQ STEERS steps, deadlines and fees

  Texas Tier II reporting: TCEQ's STEERS system, the November 1 to March 1 window, initial and updated reports, fees and ePay, and preparer access.

• Tier II reporting requirements: what the form needs, field by field

  What a Tier II report must contain under 40 CFR 370.42: facility data, contacts, chemicals, range codes, storage, confidential locations, certification.

• TRI reporting and Form R: who files, the thresholds, and July 1

  EPCRA 313 TRI reporting: covered industries, the 10-employee test, 25,000 and 10,000 lb thresholds, Form R vs Form A, TRI-MEweb and July 1.

• EPCRA reporting requirements: sections 302, 304, 311, 312 and 313

  EPCRA facility reporting duties: emergency planning (302), release notification (304), SDS reporting (311), Tier II (312) and TRI (313).

• Your OSHA 300A and ITA data, prepared for your March 2 submission.

  OSHA 300A summary and ITA data prepared from your 300 log, $295 per establishment. Your executive certifies; your company submits in OSHA's free ITA.