['Air Programs']
['Hazardous Air Pollutants']
12/23/2024
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(a) Each CPMS must meet the requirements in paragraphs (a)(1) through (4) of this section.
(1) Complete a minimum of one cycle of operation for each successive 15-minute period.
(2) To calculate a valid hourly value, you must have at least three of four equally spaced data values (or at least two, if that condition is included to allow for periodic calibration checks) for that hour from a CPMS that is not out of control according to the monitoring plan referenced in §63.7935.
(3) To calculate the average emissions for each averaging period, you must have at least 75 percent of the hourly averages for that period using only block hourly average values that are based on valid data (i.e., not from out-of-control periods).
(4) Unless otherwise specified, each CPMS must determine the hourly average of all recorded readings and daily average, if required.
(b) You must record the results of each inspection, calibration, and validation check.
(c) You must conduct a performance evaluation for each CPMS according to the requirements in §63.8(e) and your site-specific monitoring plan.
(d) Failure to meet the requirements of paragraphs (a)(1) through (4) of this section is a deviation and must be reported according to the requirements in §63.7951(b)(7).
[85 FR 41708, July 10, 2020]
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