EPA's Hazardous Chemical Reporting Rule for Construction Firms

The Environmental Protection Agency has finalized a rule that conforms the Emergency Planning and Community Right-to-Know Act's hazardous chemical inventory reporting regulations to the definitions and hazard categories in OSHA's Hazard Communication Standard, as amended in 2012 and 2024. Published as 91 FR 37022 on June 22, 2026, the rule is effective August 21, 2026. For construction firms that already prepare annual hazardous chemical inventory reports under EPCRA, this is a change to the terminology and hazard categories those reports rely on, not a new reporting program — and knowing what shifted before the effective date is what keeps a firm's inventory forms from lagging behind the standard they are supposed to match.

This guide explains, in plain English, what the rule does, who it touches, what construction firms should check before the date, and how a firm can keep its recordkeeping current as the underlying OSHA standard continues to evolve. It leads with the obligation and the dates, not with any product. The aim is to give environmental health and safety teams a clear, sourced picture they can act on without re-reading the full Federal Register entry themselves.

Key Takeaways

• An EPA rule, cited as 91 FR 37022, conforms EPCRA's hazardous chemical inventory reporting regulations to OSHA's Hazard Communication Standard amendments and is effective August 21, 2026.

• The rule was published June 22, 2026, carries RIN 2050-AH40, and revises the regulations at 40 CFR Part 370.

• Per 91 FR 37022, it conforms the terminology used and the information reported on hazardous chemical inventory forms to OSHA's 2012 and 2024 Hazard Communication Standard amendments — it does not create a new reporting program.

• Construction firms that already file EPCRA hazardous chemical inventory reports should confirm their forms and internal recordkeeping reflect the conformed terminology in 91 FR 37022 before the effective date.

• This post is informational only and is not legal or tax advice; consult a qualified attorney or environmental compliance professional before acting on any specific situation.

What this rule actually does

The rule addresses a structural feature of EPCRA: the statute and its regulations do not independently define which chemicals or hazards must be reported. Instead, EPCRA's hazardous chemical inventory reporting regulations rely on OSHA's Hazard Communication Standard for the definition of a hazardous chemical and for the categories of health and physical hazards that must be reported. When OSHA amends the Hazard Communication Standard — as it did in 2012 and again in 2024 — the terminology on EPCRA's own reporting forms can fall out of step with the standard those forms are meant to mirror. This action is EPA's fix for that gap: as stated in 91 FR 37022, it conforms the terminology used and the information that must be reported on hazardous chemical inventory forms to the current Hazard Communication Standard amendments.

It's worth reading that narrowly. The rule does not redefine what a hazardous chemical is in some new, independent way, and it does not layer a new reporting program on top of EPCRA's existing hazardous chemical inventory requirement. What changes is that the labels, categories, and terms a facility uses to complete its inventory forms — and the labels that same facility already encounters on the Safety Data Sheets it relies on — are brought into alignment with each other. According to the rule at 91 FR 37022, that alignment is expected to improve first responder and community safety, reduce discrepancies and confusion, prevent interpretation burdens on facilities that use Safety Data Sheets to complete annual hazardous chemical inventory reports, and enhance overall clarity.

Because this is a final rule, the conformity change carries the force of a final regulation as of its effective date. The rule at 91 FR 37022 took effect August 21, 2026, and it revises the regulations at 40 CFR Part 370 under RIN 2050-AH40. Any internal checklist, inventory-form template, or training material that still references pre-2024 Hazard Communication Standard terminology should be checked against the conformed language before that date.

Rule at a glance

The table below collects the identifying details of this rulemaking in one place. Every value traces to the rule as published in the Federal Register at 91 FR 37022.

Who is affected

This rule reaches facilities the same way EPCRA's hazardous chemical inventory reporting requirement already does: it applies to the reporting obligation itself, not to some new category of regulated party. For construction, that means firms that store or use hazardous chemicals on job sites or at fixed facilities in quantities that already trigger EPCRA's annual hazardous chemical inventory reporting requirement under 40 CFR Part 370 are the firms this conformity update touches. A firm's first task is to confirm it already falls within that reporting population; most construction firms that handle fuel, solvents, or other hazardous chemicals in reportable quantities already know whether they file these reports.

Firms that are unsure whether they meet EPCRA's reporting thresholds, or whether a specific chemical on site falls within a reportable hazard category, should treat that as a separate threshold question from this conformity update. This rule, as published at 91 FR 37022, changes the terminology and categories used on the reporting forms; it does not restate every applicable reporting threshold.

What Construction Firms should do before the date

The most important thing to take from this rule is that it is a terminology and categorization update layered onto an existing obligation, not a brand-new program with its own separate compliance track. That distinction shapes the right response. A firm that treats the conformity update as irrelevant because "the reporting requirement already existed" risks showing up to its next annual filing with inventory forms that still carry pre-2024 Hazard Communication Standard language. A firm that uses the runway between now and the effective date to check its forms and training materials against the conformed terminology is the one this rule is designed to help. The rule requires that hazardous chemical inventory forms reflect the conformed terminology and hazard categories as of 91 FR 37022; it does not relieve a firm of the underlying EPCRA reporting obligation.

A sensible, sourced preparation path looks like this. First, confirm the firm already falls within EPCRA's hazardous chemical inventory reporting population under 40 CFR Part 370, and if so, locate every internal form template, Safety-Data-Sheet-reading procedure, or training document that references hazard categories or hazardous-chemical terminology. Second, compare those materials against the Hazard Communication Standard amendments referenced in 91 FR 37022 and update any language that has not yet been conformed. Third, brief whoever prepares the annual hazardous chemical inventory report — often an EHS coordinator or an outside consultant — so the filing after August 21, 2026, uses the conformed terms rather than legacy language. Fourth, keep a copy of the rule itself on hand, since it is the controlling document for exactly what changed.

Throughout, the operative framing is that the rule requires hazardous chemical inventory forms to reflect the conformed Hazard Communication Standard terminology as of the effective date in 91 FR 37022, and covered firms must work out how that affects their own forms and procedures. This is a description of the rule as published in the Federal Register, not a personalized legal instruction to any reader, and it is not a substitute for advice from your own environmental counsel.

Operationalizing recordkeeping at volume

The hard part for most construction firms is not reading this one conformity update — it is keeping every job site's chemical inventory, every Safety Data Sheet binder, and every recordkeeping template aligned with the Hazard Communication Standard as OSHA continues to amend it and EPA continues to conform EPCRA's reporting rules to match. That is a monitoring and recordkeeping problem at scale, and it is where US Tech Automations fits: configured against a firm's own hazardous chemical inventory and the Federal Register feed for documents tied to 40 CFR Part 370 and RIN 2050-AH40, a configured US Tech Automations agentic workflow can flag a matching rule change, route it to a named EHS reviewer, and keep the underlying inventory data current across every site without anyone re-checking each form by hand before the next annual filing.

How this fits the broader regulatory window

This rule does not exist in a vacuum. It is one of 259 U.S. federal rules sealed in our point-in-time index of rules published July 1, 2024 – July 5, 2026 by 10 agencies governing our covered industries. A single conformity update like this one is easy to read in isolation; the challenge is that construction firms carry hazardous-chemical, safety, and environmental obligations from several agencies at once, each with its own effective date, its own CFR part, and its own follow-on amendments. A firm that tracks only the rules it already knows about, using the terminology it wrote down the first time it filed, will eventually find its recordkeeping out of step with a standard that has since moved. That is the structural case for treating Hazard Communication Standard and EPCRA monitoring as an ongoing operational function rather than a one-time compliance project.

The takeaway for leadership is straightforward: the underlying EPCRA hazardous chemical inventory reporting obligation has not changed. The terminology and hazard categories used to satisfy it have simply been conformed to the current OSHA standard, and that kind of conforming update is itself a reminder that compliance language is not static. Firms that want to see how a configured monitoring and recordkeeping workflow fits alongside their existing compliance program can review current plans on the US Tech Automations pricing page.

Frequently asked questions

What is the effective date of this EPA rule?

This EPA rule is effective August 21, 2026, as stated in the rule published at 91 FR 37022. The rule was published on June 22, 2026.

Which part of the Code of Federal Regulations does this rule affect?

The rule revises the regulations at 40 CFR Part 370, which implement EPCRA's hazardous chemical inventory reporting requirement. The RIN for the rulemaking is 2050-AH40.

Does this rule change what counts as a hazardous chemical?

Not on its own. EPCRA's hazardous chemical inventory reporting regulations already relied on OSHA's Hazard Communication Standard for the definition of a hazardous chemical and the categories of health and physical hazards that must be reported. This rule conforms the terminology on the reporting forms to the 2012 and 2024 Hazard Communication Standard amendments, as described in 91 FR 37022; it does not create an independent, new definition.

Does this rule create a new report or filing that construction firms must submit?

No. The rule conforms the terminology used and the information reported on existing hazardous chemical inventory forms; it does not establish a new report or a separate filing requirement, per 91 FR 37022.

Why is EPA conforming EPCRA's terminology to OSHA's Hazard Communication Standard?

According to the rule at 91 FR 37022, the conformity update is meant to improve first responder and community safety, reduce discrepancies and confusion, prevent interpretation burdens on facilities that use Safety Data Sheets to complete annual hazardous chemical inventory reports, and enhance clarity.

How can a construction firm keep its recordkeeping current as OSHA's standard continues to change?

Treat Hazard Communication Standard and EPCRA monitoring as an ongoing function rather than a one-time review. Many firms configure an automated workflow to monitor for new documents tied to 40 CFR Part 370 and RIN 2050-AH40 and route material changes to an EHS reviewer, so the next amendment does not slip past unnoticed. The primary text remains the rule itself at 91 FR 37022.

Related guidance

For related environmental and construction-industry compliance coverage, see our notes on the OSHA Hazard Communication Standard for roofing contractors, the national emission standards for hazardous air pollutants in construction, and EPA standards of performance for new stationary sources in construction.

Disclaimer

This article is provided for informational purposes only and does not constitute legal or tax advice. Reading it does not create an attorney-client relationship. Regulatory requirements are fact-specific, and you should consult a qualified attorney or environmental compliance professional before acting on any matter discussed here. Every date, citation, RIN, CFR reference, and figure in these posts is copied verbatim from the Federal Register and eCFR as of the snapshot date. Nothing is estimated, modeled, or extrapolated. This is not legal or tax advice.

Last reviewed: July 5, 2026.

Source: U.S. Federal Register (91 FR 37022); current text via eCFR, 40 CFR Part 370 (Protection of Environment, current as of July 1, 2026).