What EPA’s Review Means for Composite Wood Compliance

EPA’s 2026 Section 610 review does not suspend or change the TSCA Title VI composite-wood requirements in 40 CFR Part 770. Plywood, MDF and particleboard businesses must continue following the existing emission, testing, quality-control, certification, labeling, import and recordkeeping rules unless EPA completes a separate legally operative action. The reported December 2026 decision is a review target, not an effective date for a rule change.

Choose a panel type and stamp, or select a timeline milestone, to see what controls now.

The current eCFR text for 40 CFR Part 770, displayed as current through August 24, 2026, identified May 28, 2024, as the latest amendment to the part. It showed no 2026 amendment.

ArentFox Schiff’s legal analysis reports that EPA is conducting a Regulatory Flexibility Act Section 610 review under docket EPA-HQ-OPPT-2025-2433, with comments due October 13, 2026. Separate regulatory reporting identifies RIN 2070-AL38 and a December 2026 completion target.

Those filing details should be verified in the official EPA or Reginfo record. The supplied August 2026 Unified Agenda page returned a server error and did not expose the underlying entry. Its URL and title alone do not establish the docket, deadline, filing instructions or timetable.

The Review Cannot Change Part 770 By Itself

Section 610 of the Regulatory Flexibility Act provides for periodic review of rules that have or may have a significant economic impact on a substantial number of small entities. The process examines five reported factors:

1. The rule’s continued need
2. The nature of public comments or complaints
3. The rule’s complexity
4. Overlap, duplication or conflict with other requirements
5. Relevant technological, economic or other changes

These factors allow EPA to gather evidence about how the rule operates. They do not establish that the rule is obsolete, unnecessarily burdensome or headed for rescission.

The review could conclude that Part 770 should remain unchanged. It could identify provisions that warrant clarification or burden reduction. It could also inform a later proposal to amend or rescind part of the rule.

The review itself cannot edit the Code of Federal Regulations, approve a new test method, change an emission standard, create an exemption or suspend enforcement. A substantive change would require separate official action under the applicable legal authority, followed by an operative decision and effective date.

The reported December 2026 date is therefore an agency planning target. It is not a statutory deadline, a promised outcome or permission to change current compliance practices.

Current Requirements Cover More Than Emission Limits

The Formaldehyde Standards for Composite Wood Products Act of 2010 established emission standards and directed EPA to implement requirements for covered products. EPA published the implementing final rule on December 12, 2016, under 15 U.S.C. §2697. The requirements are codified in 40 CFR Part 770.

EPA describes the rule’s purpose as reducing exposure to formaldehyde emissions from covered wood products made domestically or imported into the United States on its composite-wood rule page.

The principal regulated panel categories are hardwood plywood, medium-density fiberboard including regulated thin MDF, and particleboard. Component parts and finished goods containing regulated composite wood can also be covered.

The regulation focuses on formaldehyde emitted from a covered product. A product is not classified solely by the presence or absence of a named adhesive ingredient. Its panel construction, resin pathway, certification status and applicable exclusions all matter.

Part 770 creates a compliance system rather than only a set of emission limits. Depending on the product and business role, it governs testing, quality control, third-party certification, accreditation, labels, import certification, records, noncomplying lots and supply-chain transactions.

Covered products manufactured in or imported into the United States after March 22, 2019, generally must be certified and labeled as TSCA Title VI compliant under the applicable conditions. The label represents conformity with the governing standard and related requirements; it does not mean that the panel emits no formaldehyde.

Part 770 contains exclusions and special provisions, including provisions affecting certain laminated products and exclusions for qualifying structural plywood, structural panels, structural composite lumber, hardboard and some previously sold finished goods. Coverage must be decided from the current regulation and the product’s actual construction, not its marketing name alone.

A Stamp Does Not Necessarily Identify The Adhesive

A TSCA Title VI stamp indicates federal compliance under the applicable panel category. It does not, by itself, identify urea-formaldehyde, phenol-formaldehyde or another resin family. The same is true of a CARB Phase 2 mark: it is an emissions-compliance designation, not a complete adhesive specification.

During the transition from June 1, 2018, through March 22, 2019, EPA accepted CARB ATCM Phase II or TSCA Title VI labels under the agency’s transition framework. For products made or imported after that period, a CARB Phase 2 stamp alone should not be treated as proof that current federal labeling conditions have been satisfied.

NAF identifies a no-added-formaldehyde-based-resin pathway. ULEF identifies an ultra-low-emitting-formaldehyde-resin pathway. Those designations can affect product-specific certification, testing or labeling treatment under Part 770, but they are not universal statements that every otherwise applicable duty disappears.

The governing emission standard still depends on whether the product is hardwood plywood, MDF, thin MDF or particleboard. The supplied source record does not state the numerical limits, so no numeric limit is reproduced here. Verify the current values and definitions in Part 770 before making a specification or acceptance decision.

California and federal requirements are closely aligned but should not be described as identical. California accepts products labeled as TSCA Title VI compliant because the programs are “very similar,” according to the California Air Resources Board’s composite-wood FAQ. Businesses selling into California must still determine which provisions of each program apply.

The February Proposal Is A Separate EPA Action

EPA’s February 2026 technical-standards proposal and the Section 610 review concern the same general rule but occupy different procedural tracks.

EPA announced the technical proposal on February 6, 2026. The official EPA announcement says it would update seven incorporated voluntary consensus standards and add ISO 12460-2:2024(en), a small-scale chamber method, as another quality-control option.

The proposal was published on February 11, 2026, at 91 FR 6161. The Federal Register proposal identifies proposed editions including ASTM D5582-22, ASTM D6007-22, ASTM E1333-22, BS EN ISO 12460-3:2023, ANSI A190.1-2022 and PS 1-22.

EPA did not propose new formaldehyde emission limits. It said ISO 12460-2:2024 could accommodate a wider range of analytical methods, including laser absorption spectroscopy. The method was proposed as an additional quality-control option, not a replacement for the emission standards.

Comments closed on March 13, 2026. The available evidence establishes the proposal and comment period but does not establish finalization. The eCFR record current through August 24 showed no 2026 amendment to Part 770.

Until a final rule says otherwise, a laboratory cannot treat ISO 12460-2:2024 as an approved federal Part 770 method merely because EPA proposed it. Laboratories, certifiers and manufacturers may evaluate potential validation, calibration, training, accreditation and documentation effects, but those possible implementation issues are not current obligations.

Both actions are also separate from EPA’s broader formaldehyde risk evaluation. The risk evaluation, Section 610 review and technical proposal have different purposes and procedural consequences.

The Review Timeline Has No Automatic Rule-Change Date

Congress established the statutory framework in 2010. EPA published the implementing final rule on December 12, 2016, and it became effective on May 22, 2017 after a delay from the previously planned March date.

June 1, 2018 marked a major compliance transition. From then through March 22, 2019, EPA accepted CARB ATCM Phase II or TSCA Title VI labels under the transition described by the agency. After March 22, 2019, covered products generally entered the current TSCA Title VI certification and labeling framework.

EPA made standards-related and alignment-related amendments in 2018, 2019 and 2023. Those amendments had different purposes and must be reviewed individually when historical text matters.

The 2026 sequence is narrower:

• February 6: EPA announces the separate technical proposal.
• February 11: The proposal is published at 91 FR 6161.
• March 13: Comments on that proposal close.
• August: The Section 610 review is reported.
• October 13: Reported review-comment deadline, subject to official verification.
• December: Reported target for completing the review, not for changing the rule.

Review findings could be published without any amendment to Part 770. The legally meaningful signal would be a separate action that states what changes, when it becomes effective and whether transition provisions apply.

Small Businesses Should Submit Provision-Specific Evidence

A useful Section 610 comment should connect a measurable effect to a particular Part 770 provision or process. General objections do not show whether a cost comes from federal law, a certifier, a customer contract or an internal quality system.

A panel producer can document annual testing and certification expense by facility and product line. A fabricator can map the steps needed to verify panels, retain purchase records and control labels. An importer can record supplier-document requests, shipment holds and repeated corrections. A laboratory can document equipment, calibration, validation, training, throughput and turnaround time.

The evidence should separate one-time transition costs from recurring costs and federal compliance costs from CARB, customer, certifier or contractual costs. An auditable calculation should identify its assumptions, time period, affected facilities or product lines, and treatment of labor and overhead.

Overlap claims require the same precision. A side-by-side comparison can identify the responsible actor, required document, label, test method, timing and legal source under each system. Similar controls are not necessarily legally duplicative.

Where a business proposes an alternative, it should explain how the change would reduce burden while preserving the rule’s purpose. It should also address whether the change would transfer cost or uncertainty to laboratories, certifiers, suppliers or downstream buyers.

Before filing, verify the docket number, deadline, submission portal and confidentiality procedures in the official record. The available sources do not supply complete official filing instructions.

Keep Existing Controls Until An Operative Change Takes Effect

Continue applicable emission testing, quality control, third-party certification, compliant-material controls, TSCA Title VI labeling, import certification and required record retention. Do not change an approved testing program, relax supplier controls or discard records because the review is underway.

Monitor the reported Section 610 docket separately from technical-proposal docket EPA-HQ-OPPT-2017-0245. A finding that some requirement deserves reconsideration would not itself change that requirement.

Importers should continue checking whether panels, component parts and finished goods are covered; whether required certification remains valid; whether labels are correct; and whether supplier and transaction records support the import certification. California-facing businesses should continue assessing federal and CARB obligations separately.

The review can influence future policy, but it cannot supply a present exemption. For plywood, MDF and particleboard adhesives, the existing panel-specific standards and compliance pathways remain controlling until EPA issues a separate action with legal effect.