Operating limit deviations.
(5) Operating limit deviations. If one or more operating limit deviations occurred during the monthly averaging period, compliance with the emission standards in 63.3320(b) is determined by either assuming no control of emissions or by estimating the emissions using a control destruction efficiency curve during each 3-hour period that was a deviation. You are in compliance with the emission standards in 63.3320(b) if, including the periods of deviations: