40 CFR Table 3
Model Rule—Operating Limits for Incinerators and Wet Scrubbers 
June 9, 2020
As stated in §60.3023, you must comply with the following:
Open Table
| For these operating parameters | You must establish operating limits | And monitoring using these minimum frequencies | ||
|---|---|---|---|---|
| Data measurement | Data recording | Averaging time | ||
| 1. Charge rate | Maximum charge rate | Continuous | Every hour | Daily for batch units. 3-hour rolling for continuous and intermittent units.a | 
| 2. Pressure drop across the wet scrubber or amperage to wet scrubber | Minimum pressure drop or amperage | Continuous | Every 15 minutes | 3-hour rolling.a | 
| 3. Scrubber liquor flow rate | Minimum flow rate | Continuous | Every 15 minutes | 3-hour rolling.a | 
| 4. Scrubber liquor pH | Minimum pH | Continuous | Every 15 minutes | 3-hour rolling.a | 
aCalculated each hour as the average of the previous 3 operating hours.
