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§ 63.7946 How do I monitor and collect data to demonstrate continuous compliance?
(a) You must monitor and collect data according to this section and your site-specific monitoring plan required in § 63.7935.
(b) Except for monitor malfunctions, associated repairs, and required quality assurance or control activities (including, as applicable, calibration checks and required zero and span adjustments), you must monitor continuously (or collect data at all required intervals) at all times that the affected source is operating.