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EPA/OLEM RIN: 2050-AG93 Publication ID: Fall 2020 
Title: Modernizing Ignitable Liquids Determinations 
Abstract: On July 7, 2020, the EPA finalized the Modernizing Ignitable Liquids Determinations rule. Specifically, the EPA finalized: (1) updates to the flash point test methods to include current ASTM International (ASTM) standards that use modern instrumentation and non-mercury thermometers; (2) the codification of existing guidance to define "aqueous" as "50% water by weight." However, the EPA did not finalize other guidance proposed for codification and instead explained in the preamble how existing guidance for the aqueous alcohol exclusion and sampling of multiple phase wastes applies; (3) updates to correct cross references to U.S. Department of Transportation regulations and to remove obsolete information in the ignitability regulation; and (4) alternatives to the use of mercury thermometers in the air sampling and stack emissions methods 0010, 0011, 0020, 0023A, and 0051 in SW-846. The final rule became effective on September 8, 2020. 
Agency: Environmental Protection Agency(EPA)  Priority: Substantive, Nonsignificant 
RIN Status: Previously published in the Unified Agenda Agenda Stage of Rulemaking: Completed Actions 
Major: No  Unfunded Mandates: No 
EO 14192 Designation: Deregulatory 
CFR Citation: 40 CFR 261   
Legal Authority: 42 U.S.C. 6912    42 U.S.C. 6921(a) "RCRA 3001(a)"   
Legal Deadline:
Action Source Description Date
None       
Timetable:
Action Date FR Cite
NPRM  04/02/2019  84 FR 12539   
Final Rule  07/07/2020  85 FR 40594   
Final Rule Effective  09/08/2020 
Additional Information: Docket #:EPA-HQ-OLEM-2018-0830
Regulatory Flexibility Analysis Required: No  Government Levels Affected: Federal, State 
Small Entities Affected: No  Federalism: No 
Included in the Regulatory Plan: No 
RIN Information URL: https://www.epa.gov/hw-sw846/proposed-rule-modernizing-ignitable-liquids-determinations   Public Comment URL: https://www.regulations.gov/docket?D=EPA-HQ-OLEM-2018-0830  
Sectors Affected: 221118 Other Electric Power Generation; 324110 Petroleum Refineries; 541330 Engineering Services; 541380 Testing Laboratories; 541620 Environmental Consulting Services; 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); 561990 All Other Support Services; 562211 Hazardous Waste Treatment and Disposal 
RIN Data Printed in the FR: No 
Agency Contact:
Daniel Fagnant
Environmental Protection Agency
Office of Land and Emergency Management
1200 Pennsylvania Avenue NW, Mail Code 5304P,
Washington, DC 20460
Phone:703 308-0319
Email: fagnant.daniel@epa.gov

Melissa Kaps
Environmental Protection Agency
Office of Land and Emergency Management
1200 Pennsylvania Avenue NW, Mail Code 5304P,
Washington, DC 20460
Phone:703 308-6787
Email: kaps.melissa@epa.gov