Air Quality Plan; Arizona; Maricopa County Air Quality Department; New Source Review; Emission Reduction Credits-Rule 204

The record

Publisher

Federal Register

Agency

Environmental Protection Agency

Source

Federal Register

Kind

Federal Register: proposed rule

Jurisdiction

United States

Topics

Environment

Importance

Notable, the middle of three tiers Kresmion sets by fixed rules from the source's own fields

Published (source time)

2026-10-08 (the source gives a date only)

First seen on Kresmion

2026-10-26 18:25 UTC

The original

• PDF (Federal Register)

Source: Federal Register (federalregister.gov). U.S. government work, public domain.

The publisher's summary

The U.S. Environmental Protection Agency (EPA) is proposing to approve a revision to the Maricopa County Air Quality Department (MCAQD or "Department") portion of the Arizona State Implementation Plan (SIP). This revision establishes a federally enforceable program allowing nonroad engine fleet owners/operators to generate emission reduction credits (ERCs) by either retrofitting their nonroad engines or replacing their nonroad engines with lower-emitting nonroad engines while meeting other Clean Air Act (CAA or "Act") requirements. These ERCs are intended for use as offsets for major stationary sources under the Department's Nonattainment New Source Review (NNSR) program. We are proposing to approve a local rule to allow for the generation of ERCs through voluntary nonroad engine emission reductions under the CAA.

The publisher's words, as published.

Federal Register document

Document number

2026-20612

Document type

Proposed Rule

Status

Published