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EPA/OAR RIN: 2060-AV81 Publication ID: Fall 2023 
Title: Revisions to Method 320 Measurement of Vapor Phase Organic and Inorganic Emissions by Extractive Fourier Transform Infrared (FTIR) Spectroscopy 

This proposed action would update Method 320. This method describes sampling and analytical procedures for extractive emission measurements using Fourier transform infrared (FTIR) spectroscopy in specific field measurement applications and validation tests. The EPA is proposing revisions to streamline the length and language; quality assurance/quality control procedures would be revised to reflect changes in instrumentation and sampling equipment since the original version of this method; and data processing and analysis sections would be updated to reflect evolving software and testing approaches.

Agency: Environmental Protection Agency(EPA)  Priority: Substantive, Nonsignificant 
RIN Status: Previously published in the Unified Agenda Agenda Stage of Rulemaking: Proposed Rule Stage 
Major: No  Unfunded Mandates: No 
CFR Citation: 40 CFR 63 subpart PPP    40 CFR 60   
Legal Authority: 42 U.S.C. 7401 et seq.    Clean Air Act   
Legal Deadline:  None
Action Date FR Cite
NPRM  04/00/2024 
Final Rule  11/00/2025 
Additional Information: EPA-HQ-OAR-2022-0491.
Regulatory Flexibility Analysis Required: No  Government Levels Affected: None 
Federalism: No 
Included in the Regulatory Plan: No 
RIN Data Printed in the FR: No 
Agency Contact:
David Nash
Environmental Protection Agency
Office of Air and Radiation
109 TW Alexander Drive,
Research Triangle Park, NC 27701
Phone:919 541-9425