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U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
All Titles
Title 40
Chapter I
Part 53
Subpart D - Subpart D—Procedures for Testing Performance Characteristics of Methods for PM 10
§ 53.40 - General provisions.
§ 53.41 - Test conditions.
§ 53.42 - Generation of test atmospheres for wind tunnel tests.
§ 53.43 - Test procedures.
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