Environmental Protection Agency
This document announces the availability of applicability determinations, regulatory interpretations, alternative monitoring, and other determinations made by the Environmental Protection Agency (EPA) from June 2025 to July 2026. The EPA made these applicability determinations, regulatory interpretations, alternative monitoring, and other determinations in response to inquiries concerning compliance with the Clean Air Act (CAA) stationary source program, specifically the New Source Performance Standards (NSPS); the National Emission Standards for Hazardous Air Pollutants (NESHAP); and the Emission Guidelines and Federal Plan Requirements for existing sources. The EPA posted the decisions on the CAA Section 111, 112, and 129 Applicability Determination Dashboard (ADD). This document also announces six broadly applicable alternative test method approval decisions that the EPA made in 2022, 2024, and 2025. These broadly applicable alternative test methods were approved in support of the NSPS and the NESHAP.
Document Headings Document headings vary by document type but may contain the following: the agency or agencies that issued and signed a document the number of the CFR title and the number of each part the document amends, proposes to amend, or is directly related to the agency docket number / agency internal file number the RIN which identifies each regulatory action listed in the Unified Agenda of Federal Regulatory and Deregulatory Actions See the Document Drafting Handbook for more details. Environmental Protection Agency [EPA-HQ-OAR-2026-8350, EPA-HQ-OAR-2007-1196; FRL-13631-01-OAR] AGENCY: Environmental Protection Agency (EPA). ACTION: Notice of availability. SUMMARY: This document announces the availability of applicability determinations, regulatory interpretations, alternative monitoring, and other determinations made by the Environmental Protection Agency (EPA) from June 2025 to July 2026. The EPA made these applicability determinations, regulatory interpretations, alternative monitoring, and other determinations in response to inquiries concerning compliance with the Clean Air Act (CAA) stationary source program, specifically the New Source Performance Standards (NSPS); the National Emission Standards for Hazardous Air Pollutants (NESHAP); and the Emission Guidelines and Federal Plan Requirements for existing sources. The EPA posted the decisions on the CAA Section 111, 112, and 129 Applicability Determination Dashboard (ADD). This document also announces six broadly applicable alternative test method approval decisions that the EPA made in 2022, 2024, and 2025. These broadly applicable alternative test methods were approved in support of the NSPS and the NESHAP. FOR FURTHER INFORMATION CONTACT: For questions about the ADD, broadly applicable alternative test methods, or this document, contact RADIMMO@epa.gov . This email address is for inquiries on all Regulatory Applicability Determinations, Interpretations, Alternative Methods, Monitoring, and Other re…
Citation: 91 FR 68510
