…ia (as N) 6665.000 2930.000 [ 50 FR 38365 , Sept. 20, 1985, as amended at 55 FR 31710 , 31711 , Aug. 3, 1990] Footnotes - 421.265 [ 1 ] This allowance applies to either acid or alkaline wet air pollution control scrubbers. If both acid and alkaline wet air pollution control scrub…