AMAAPCD RULE 422 EXEMPTIONS TO RULE 421
LAST REVISED 11/11/11


Rule 422  Exemptions to Rule 421.  The Air Pollution Control
          Officer may exempt from any of the requirements of Rule
          421.C. any of the following facilities or
          modifications:  (1) Resource recovery sources burning
          refuse-derived or biomass-derived solid waste fuels,
          (2) sources which must switch fuels due to a lack of
          adequate fuel supplies, and (3) sources required to be
          modified as a result of Environmental Protection Agency
          regulations where no exemption from such regulation is
          available to the source.  An exemption under this Rule
          shall not be granted unless:

     A.   The applicant demonstrated that it made its best
          efforts to obtain sufficient emission offsets to comply
          with Rule 421.C. and that such efforts were
          unsuccessful; and

     B.   The applicant has secured all available emission
          offsets and will continue to seek the necessary offsets
          and apply them when they become available.