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§ 63.7947 What are my monitoring alternatives?
(a) As an alternative to the parametric monitoring required in this subpart, you may install, calibrate, and operate a continuous emission monitoring system (CEMS) to measure the control device outlet total organic emissions or organic HAP emissions concentration.
(1) The CEMS used on combustion control devices must include a diluent gas monitoring system (for O2 or CO2) with the pollutant monitoring system in order to correct for dilution (e.g., to 0 percent excess air).