1. a) PAL Effective Period. The Agency shall specify a PAL effective period of 10 years.

2. b) Reopening of the PAL Permit

   1. 1) During the PAL effective period, the Agency must reopen the PAL permit to:

      1. A) Correct typographical/calculation errors made in setting the PAL or reflect a more accurate determination of emissions used to establish the PAL;
      2. B) Reduce the PAL if the owner or operator of the major stationary source creates creditable emissions reductions for use as offsets under 35 Ill. Adm. Code 203; and
      3. C) Revise the PAL to reflect an increase in the PAL as provided under Section 204.1870.

   2. 2) The Agency shall have discretion to reopen the PAL permit for the following:

      1. A) Reduce the PAL to reflect newly applicable federal requirements (for example, NSPS) with compliance dates after the PAL effective date;
      2. B) Reduce the PAL consistent with any other requirement, that is enforceable as a practical matter, and that the Agency may impose on the major stationary source under the SIP; and
      3. C) Reduce the PAL if the Agency determines that a reduction is necessary to avoid causing or contributing to a NAAQS or PSD increment violation, or to an adverse impact on an air quality related value that has been identified for a Federal Class I area by a Federal Land Manager and for which information is available to the general public.
3. c) Except for the permit reopening allowed by subsection (b)(1)(A) for the correction of typographical/calculation errors that do not increase the PAL level, all other reopenings shall be carried out in accordance with the public participation requirements of Section 204.1810.

The requirements in subsections (a) and (b) apply to actuals PALs.