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Table 4 to Subpart BB of Part 63—Operating Parameters, Operating Limits and Data Monitoring, Recordkeeping and Compliance Frequencies

Operating Parameters, Operating Limits and Data Monitoring, Recordkeeping and Compliance Frequencies

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Displayed edition2026-04-27
Last updated2026-04-27

Table 4 to Subpart BB of Part 63—Operating Parameters, Operating Limits and Data Monitoring, Recordkeeping and Compliance Frequencies

For the operating parameter applicable to you, as specified in Table 3 . . .You must establish the following operating limit during your performance test . . .And you must monitor, record, and demonstrate continuous compliance using these minimum frequencies . . .
Data measurementData recordingData averaging

period for

compliance
Absorbers (Wet Scrubbers)
Influent liquid flowMinimum inlet liquid flowContinuousEvery 15 minutesDaily.
Influent liquid flow rate and gas stream flow rateMinimum influent liquid-to-gas ratio aContinuousEvery 15 minutesDaily.
For the operating parameter applicable to you, as specified in Table 3You must establish the following operating limitAnd you must monitor, record, and demonstrate continuous compliance using these minimum frequencies . . .
Data measurementData recordingData averaging

period for

compliance.
Pressure dropPressure drop rangeContinuousEvery 15 minutesDaily.
Sorbent Injection
Sorbent injection rateMinimum injection rateContinuousEvery 15 minutesDaily.
Sorbent injection carrier gas flow rateMinimum carrier gas flow rateContinuousEvery 15 minutesDaily.
Fabric Filters
Alarm timeMaximum alarm time is not established on a site-specific basis but is specified in § 63.605(f)(9)ContinuousEach date and time of alarm start and stopMaximum alarm time specified in § 63.605(f)(9).
Wet Electrostatic Precipitator
Secondary voltageSecondary voltage rangeContinuousEvery 15 minutesDaily.

[82 FR 45201, Sept. 28, 2017]