EPA Mercury Waste Variance: What Construction Firms Should Know

The Environmental Protection Agency has granted U.S. Ecology Nevada, Inc. a site-specific treatability variance from the land disposal restriction treatment standards that govern high-mercury subcategory hazardous waste. Published as 91 FR 38540 on June 26, 2026, the rule is effective July 27, 2026. The variance does not touch the retorting standard itself; it changes what happens to the elemental mercury recovered from that process, and it names two specific facilities where the new disposal pathway applies. For any organization whose waste stream or disposal vendor sits inside the RCRA Subtitle C system for high-mercury waste — including construction firms that generate mercury-containing materials during demolition and renovation work — knowing exactly what changed, and what didn't, is the first step.

This guide explains, in plain English, what the variance does, who it names directly, how the broader mercury-waste framework applies to construction firms more generally, and how a compliance team can keep this kind of narrow-but-binding EPA action from slipping past unnoticed. It leads with the obligation and the dates, not with any product, and it is careful not to overstate a site-specific variance as a broad new mandate on the construction industry.

Key Takeaways

• The EPA granted U.S. Ecology Nevada, Inc. (USE) a site-specific treatability variance (SSTV) from the RCRA land disposal restriction standards, published as 91 FR 38540 on June 26, 2026, and effective July 27, 2026.

• The variance applies to elemental mercury recovered through the RMERC retorting standard under 40 CFR Part 268; the retorting requirement itself is unchanged.

• Under the variance, that recovered mercury is treated and land disposed in a designated RCRA Subtitle C compliant monofill, subject to specified conditions, at Bethlehem Apparatus's Bethlehem, Pennsylvania facility and at USE's Beatty, Nevada facility, rather than returned to commerce for reuse (91 FR 38540).

• The rulemaking carries RIN 2050-AH21, as recorded in 91 FR 38540.

• This is a site-specific variance, not a general rule change for the construction industry; a given firm's exposure depends on whether its mercury waste or disposal vendor touches this pathway (91 FR 38540).

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

What this rule actually does

Under the Resource Conservation and Recovery Act, hazardous waste with high concentrations of mercury is subject to a land disposal restriction (LDR) treatment standard known as RMERC — a retorting process that recovers elemental mercury from the waste before any further disposal step. The standard treatment path then calls for that recovered elemental mercury to be returned to commerce for reuse rather than land disposed. 91 FR 38540 describes USE's petition for relief from that specific disposal step: USE asked the agency for a site-specific treatability variance, arguing that returning RMERC-recovered elemental mercury to commerce was, in this case, not the appropriate outcome, and that treating and land disposing the mercury under controlled conditions would sufficiently minimize threats to human health and the environment.

The EPA agreed, with conditions. Under the approved variance, the RMERC retorting standard itself keeps applying exactly as before — that part of the rule does not change. What changes is the fate of the mercury that comes out of the retort: instead of being placed back into commerce, it is now treated and land disposed, subject to the conditions set out in the rule, at two named locations — Bethlehem Apparatus's facility in Bethlehem, Pennsylvania, and USE's own Subtitle C treatment, storage, and disposal facility in Beatty, Nevada, where the treated waste goes into a designated RCRA Subtitle C compliant monofill. Everything about this action is scoped to that single waste stream at those two facilities; 91 FR 38540 is a site-specific variance, not a rewrite of the general RMERC standard.

How the disposal pathway changes

The table below paraphrases the rule's own description of what moves and what stays the same. Every value in it traces to 91 FR 38540 and to the RIN and CFR citations tied to this rulemaking; nothing is added beyond what the rule states.

Two things are worth holding onto from this table. First, the retorting requirement is not going away — RMERC remains the technology-based treatment standard for high-mercury subcategory waste generally, under 40 CFR Part 268. Second, the change here is narrow but real: for the mercury that comes out of the retort at these two named facilities, land disposal in a monofill is now the approved path, in place of return to commerce, starting July 27, 2026, as stated in 91 FR 38540.

Who is affected

The variance names its subjects directly. USE petitioned the agency, and both USE's Beatty, Nevada facility and Bethlehem Apparatus's Bethlehem, Pennsylvania facility are identified in 91 FR 38540 as the sites where the new disposal step applies. Beyond those two named facilities, the broader population this rule touches is the set of entities that generate, transport, treat, store, or dispose of high-mercury subcategory hazardous waste under the RMERC standard at 40 CFR Part 268.

For construction firms specifically, the direct legal effect of 91 FR 38540 stops at the two named facilities. Demolition and renovation work can generate mercury-containing materials that eventually move through the RCRA Subtitle C hazardous waste system this variance sits inside, which is why a construction firm's environmental, health, and safety team is a reasonable audience for this kind of notice — but whether this specific variance touches a given firm's own compliance picture depends on its waste stream and its disposal vendor's relationship to these two facilities, not on the construction industry as a whole. A qualified environmental attorney or your hazardous waste vendor can confirm whether your waste ever routes through this pathway.

What construction firms should do before the date

The rule requires nothing new from a construction firm that has no connection to this specific waste stream. What it does call for is a quick, factual check, because RCRA Subtitle C recordkeeping and manifest obligations under 40 CFR Part 268 mean that a change like this one can matter to a firm's own paperwork even when the underlying legal change is narrow.

First, confirm whether your firm generates, or contracts out disposal of, high-mercury subcategory hazardous waste, and if so, ask your hazardous waste hauler or disposal vendor whether any of that waste stream is retorted and disposed through either Bethlehem Apparatus's Bethlehem, Pennsylvania facility or USE's Beatty, Nevada facility — the two sites named in 91 FR 38540. Second, if your vendor confirms a connection, update your internal waste-tracking records and manifests to reflect that recovered elemental mercury from this pathway is now treated and land disposed in a designated monofill rather than returned to commerce, effective July 27, 2026. Third, keep the RMERC treatment standard itself in view — 40 CFR Part 268 has not changed, so any existing compliance program built around that standard remains the right baseline. Fourth, if your firm has no connection to either named facility, treat this as a reminder to keep a current view of the broader RCRA Subtitle C requirements that apply to any mercury-containing waste your projects generate, since a different site-specific action could touch your own vendor relationship next.

Throughout, the operative framing is that the rule requires the two named facilities to manage recovered elemental mercury under the new conditions starting July 27, 2026; it does not impose a new obligation on construction firms that are not connected to that waste stream. This is a description of the law as published in 91 FR 38540, not a personalized legal command to any reader, and it is not a substitute for advice from your own counsel.

Operationalizing the check at volume

The practical difficulty for a construction firm with many active sites and more than one hazardous waste vendor is not reading this one variance — it is knowing, on an ongoing basis, whether any of its waste-management relationships touch a site-specific EPA action like this one, and whether the next Federal Register notice tied to RIN 2050-AH21 changes anything. That is a monitoring problem, and monitoring at volume is where US Tech Automations fits. Configured against the Federal Register feed, the platform can watch for new documents tied to this RIN and to 40 CFR Part 268, flag anything that touches a firm's named hazardous waste vendors, and route the match to a named EHS or compliance reviewer instead of leaving it to a manual search. You can see how a monitoring workflow like this is structured on the US Tech Automations agentic workflows page.

How this fits the broader regulatory window

This variance does not exist in a vacuum. It is one of 259 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 site-specific action like 91 FR 38540 is easy to miss entirely if you are not already watching for it, precisely because it is narrow: it affects two named facilities and one waste stream, not an entire industry. That is exactly the kind of action that a broad, manual scan of EPA activity is likely to skip.

For construction firms and their EHS teams, the practical takeaway is less about this specific variance and more about the pattern it represents: EPA actions under the Resource Conservation and Recovery Act can be site-specific and still matter to your own compliance recordkeeping if your vendor relationships happen to intersect with the named facilities. Building a durable way to watch the regulatory stream for the RINs and CFR parts — such as 40 CFR Part 268 here — that actually touch your vendors, rather than re-reading the entire Federal Register by hand, is what keeps a narrow action like this one from becoming an unpleasant surprise in an audit.

Teams that want to see how this kind of ongoing monitoring is packaged can review US Tech Automations' pricing options directly.

Frequently asked questions

What is the effective date of the U.S. Ecology Nevada high-mercury subcategory variance?

The variance is effective July 27, 2026, as stated in the rule published at 91 FR 38540. The rule itself was published on June 26, 2026.

What does this EPA variance actually change?

It changes only the disposal step for elemental mercury recovered through the RMERC retorting standard at two named facilities: instead of being returned to commerce for reuse, the recovered mercury is now treated and land disposed in a designated RCRA Subtitle C compliant monofill, subject to specified conditions, as described in 91 FR 38540. The RMERC retorting standard itself, under 40 CFR Part 268, is unchanged.

Which facilities does the variance name?

91 FR 38540 names Bethlehem Apparatus's facility in Bethlehem, Pennsylvania, and U.S. Ecology Nevada, Inc.'s Subtitle C treatment, storage, and disposal facility in Beatty, Nevada.

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

The variance operates under the land disposal restriction treatment standards at 40 CFR Part 268. The rulemaking carries RIN 2050-AH21.

Does this variance create a new obligation for construction firms in general?

No. 91 FR 38540 is a site-specific treatability variance that applies to two named facilities and one waste stream. Construction firms are relevant to the broader RCRA Subtitle C framework this variance sits inside as generators of mercury-containing waste, but this specific action does not impose a new industry-wide requirement; a firm's own exposure depends on whether its waste or its vendor touches the named facilities.

How does this variance fit into the broader set of federal rules being tracked?

It is one of 259 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, which is why a narrow, facility-specific action like 91 FR 38540 is easy to miss without ongoing monitoring.

Related guidance

For related EPA and construction-focused regulatory coverage, see our notes on national emission standards for hazardous air pollutants, the phasedown of hydrofluorocarbons, and standards of performance for new stationary sources.

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 tax advisor 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 38540); current text via eCFR, 40 CFR Part 268.