Scope of permit exemption

Scope of permit exemption. (1) Exemption or the granting of an exemption under this chapter from the requirement to obtain a permit does not relieve any person from compliance with the emission limitations of chs. NR 400 to 499 , the air quality requirements of ch. NR 404 , the reporting requirements of ch. NR 438 , or with any other provision of law. (2) If a source undergoes a modification which is exempt from the requirement to obtain a construction permit under s. NR 406.04 (4) , it will not be treated as a modified source for purposes of the emission limitations under chs. NR 400 to 499 . (3) A source that undergoes a modification which is exempt from the requirement to obtain a construction permit under s. NR 406.04 (1f) or (1k) shall be treated as a new or modified source for the purposes of the emission limitations under chs. NR 400 to 499 unless the modification is excluded from being considered a modification under s. NR 406.04 (4) .