(a) An existing Group 1 POTW treatment plant demonstrates compliance by operating treatment and control devices which meet all requirements specified in the appropriate NESHAP. Requirements may include performance tests, routine monitoring, recordkeeping, and reporting.

(b) A new Group 1 POTW treatment plant demonstrates compliance by operating treatment and control devices which meet all requirements specified in the appropriate NESHAP and by meeting the requirements specified in §63.1586, as applicable, as well as the applicable requirements in §§63.1588 through 63.1595.