U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 27, 2025

All TitlesTitle 40Chapter IPart 63Subpart YYYY - Subpart YYYY—National Emission Standards for Hazardous Air Pollutants for Stationary Combustion Turbines
View all text of Subpart YYYY [§ 63.6080 - § 63.6175]
§ 63.6115 - When must I conduct subsequent performance tests?

Subsequent performance tests must be performed on an annual basis as specified in Table 3 of this subpart.

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