As stated in §63.9000(b), you must comply with the following operating limits for each emission stream that is part of an affected source that is vented to a control device.

Open Table
For each .  .  . You must .  .  .
1. Caustic scrubber or water scrubber/absorber a. Maintain the daily average scrubber inlet liquid or recirculating liquid flow rate, as appropriate, above the operating limit; and
b. Maintain the daily average scrubber effluent pH within the operating limits; or
c. Instead of a. and b., maintain your operating parameter(s) within the operating limits established according to your monitoring plan established under §63.8(f).
2. Other type of control device to which HCl emissions are ducted Maintain your operating parameter(s) within the limits established during the performance test and according to your monitoring plan.

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