EPA's Title V rule adds another layer to the federal New Source Review framework, with state air agencies now facing program revisions that affect operating permits for materials recovery, recycling and waste-to-energy operations.

The National Law Review reported the development under the headline "What's New in New Source Review? EPA's Title V Rule Adds to a Growing List of NSR Developments."

What Title V and NSR actually do

A Title V operating permit consolidates applicable Clean Air Act requirements for a single source into one document the public can review. Renewal cycles typically run five years, with mid-term certifications required for major sources.

New Source Review, known as NSR, covers preconstruction review for new facilities and major modifications at existing ones. The program runs in two tracks based on regional air quality. Prevention of Significant Deterioration, or PSD, applies in areas meeting national ambient air quality standards. Nonattainment NSR governs areas that exceed them.

Both tracks hinge on emissions thresholds. PSD typically treats facilities emitting 100 tons per year or more of a regulated pollutant as major sources. Nonattainment classification pulls thresholds lower depending on pollutant category. A modification crosses NSR review when projected emissions increases cross those thresholds based on potential-to-emit, calculated before installed pollution-control equipment.

PSD permits require Best Available Control Technology determinations, air-quality impact analyses and cumulative visibility assessments in Class I areas. Nonattainment NSR requires emissions offsets at a higher than 1-to-1 ratio.

Where industry exposure sits

Materials recovery facilities operate diesel-powered conveyor lines, shredders, balers and air-classification systems whose particulate and combustion emissions can pull a site into permitting scrutiny. EPA measured the national recycling rate at 32 percent of municipal solid waste generation by weight in 2018, the most recent published characterization, and recovery infrastructure has continued to expand since.

Waste-to-energy plants burn municipal solid waste or refuse-derived fuel under boilers subject to Section 129 of the Clean Air Act. These facilities carry case-by-case or standardized emission limits layered on top of standard NSR review.

Pyrolysis units processing scrap tires or mixed plastics sit in regulatory territory EPA has scrutinized repeatedly. Composting sites with engine-driven aeration blowers can fall within scope when aggregate engine horsepower crosses permitting triggers.

Battery recycling operations, particularly those using pyrometallurgical processing, draw agency attention as lithium-ion volumes climb at materials recovery sites. Each plant presents an emissions profile distinct from conventional shredding and baling.

The Title V rule, as The National Law Review framed it, arrives as EPA has cycled through multiple NSR actions in sequence, raising the cumulative compliance load on permit holders with overlapping obligation dates.

What states must do next

State and local air agencies administer Title V programs under EPA-approved plans. A federal rule revision requires each agency to revise application forms, public-notice procedures and compliance-certification rules for facilities in its jurisdiction.

Permit holders face a transition period defined by the date a state's revised program becomes effective. Recycling operators holding major-source Title V permits will track their state agencies' rule-adoption timelines and any revised applicability criteria that determine whether their facilities stay in the major-source category.

Below-threshold facilities planning expansions will see parallel NSR reviews under revised thresholds. State agencies retain discretion on minor-source permitting, but major-source classification brings federal overlay and public-notice requirements.

The milestone that decides what happens next

Each state program revision carries its own effective date, typically following a public-comment period and formal EPA approval of the state plan submittal. Compliance obligations begin on that state-level effective date, not on the federal rule's publication date in the Federal Register.

The questions that remain open: whether the rule revises applicability criteria for materials recovery operations specifically, whether it adjusts exemptions for recycling residues burned as fuel, and whether it changes the treatment of throughput increases that leave equipment configuration unchanged.

Operators who file Title V renewals in the current cycle will see the revisions land first. Permittees whose renewals fall later will have more lead time but less certainty about the state program under which they will operate when the new rules take hold.