Code of Federal Regulations > Title 40 > Chapter I > Part 63 > Subpart H > Appendix - Table 1 to Subpart H of Part 63

Regulations last checked for updates: May 18, 2024

Title 40 - Protection of Environment last revised: May 16, 2024

Appendix - Table 1 to Subpart H of Part 63—Batch Processes

Link to an amendment published at 89 FR 43234, May 16, 2024.

Monitoring Frequency for Equipment Other than Connectors

Operating time (% of year)	Equivalent continuous process monitoring frequency time in use
Operating time (% of year)	Monthly	Quarterly	Semiannually
0 to <25	Quarterly	Annually	Annually.
25 to <50	Quarterly	Semiannually	Annually.
50 to <75	Bimonthly	Three times	Semiannually.
75 to 100	Monthly	Quarterly	Semiannually.

authority: 42 U.S.C. 7401

source: 57 FR 61992, Dec. 29, 1992, unless otherwise noted.