LAC 33:III.707. Degradation of Ambient Air Having Higher Quality than Set Forth in These Sections Restricted

A. As of the effective date of these regulations all processes which currently result in higher ambient air quality than shown in LAC 33:III.711.A, Table 1 and 711.B, Table 1a shall be maintained at the higher process quality level or better unless it can be affirmatively demonstrated to the administrative authority that a change in quality is justifiable.