Section 63.1585 - How does a Group 1 POTW treatment plant demonstrate compliance?(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 .