['Air Programs']
['Hazardous Air Pollutants']
12/23/2024
...
For each wet scrubber subject to the operating limits for pressure drop and scrubber water flow rates in §63.9890(b), you must at all times monitor the hourly average pressure drop and liquid flow rate using a CPMS according to the requirements in §63.9921(a).
['Air Programs']
['Hazardous Air Pollutants']
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