40 C.F.R. Table 1 to Subpart UU of Part 63
Batch Processes Monitoring Frequency For Equipment Other Than Connectors
Cite as 40 C.F.R. Table 1 to Subpart UU of Part 63 (2026)
Operating time (% of year) Equivalent continuous process monitoring frequency time in use 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.