Document gDnpmgpkbED6MaYjENJONx1E3

d) The owner or operator skill provide a detailed showing that the proposed mission limitations-constitute LACK.. Such demonstration shall Include: lV A description of the manner in which the proposed emission limitation was Selected. Including a detailed listing, of. information resources. the.permit application is filed, and. If offset Is to be produced by a future - switch to a cleaner fuel, be accompanied by evidence that long-term supplies of the c,le*n fuel are available and a dommitmeql to a-spccifted alternative control measure which would achieve the same degree of emission reduction if return of the. dirtier fuel Is proposed; 2) Alternative emission limitations, and - . <' ;'* .s ' %,' 3) Musty.in.the case of a shutdown of a source or permanent curtailment of 3) Such other reasonable information as the' '. production- or operating hours occurring Agency may request as necessary to . oh dir after the date .a permit application determine whether-the proposed moission- . is 'filed for a- new or modified source. limitaition is LAER. . '.have been made known to the affected work " foefe; (Source: Amended.at I? 111. Reg. 6118. effective March 22. 1988) 4) Must. .In .the case or a past shutdown of a source .or-.- permanent. curtaHment'- oP- production or operating-hours, have Section 203:302. Maintenance .of Reasonable occurred since April 24. 1979. or the Further Progress and emission date the area Is designated a Offsets nenatT frinenc~ area fbr'flib poTMitwir;-''` v. .whichever Is more...recent, and the a') The'owner'or operator of a new-major source proposed new or modified source must be a or major modification shall provide emission ' replacement, for the'.-shutdown or offsets equal to or greater than the curtailment; allowable .emissions^from the source or the i net increase In emissions from the 5) . ikist. be. enforceable bjr.peroil; ` modification sufficient to allow the Agency to determine'that -the source or modification' 6).' Must not .have.-been previously relied on. will not .Interfere with reasonable further- ar-demonstrated'hy^the-Agency. in issuing' " progress qs set forth in Sect ion-173 of the any permit pursuant to IS 111. Ate. Code Clean Air Act. 201.142 qr 201.143 or this Part, or for * ..* 1 .......... demonsrratfng arralitnent' or reasonable- t>)The Agency shal 1 allow the- use of all or some further progress. pqrtion.of the available growth margin to . satisfy .subsection (a). If-the owner or .eJ-Therbesellnen for-rdetermining emission - operator can evidence that -the possible ' -. offsets are as follows: '.'sourCqs ot'emission offsets were'Investigated' ; and'none were available at that time. 1) `Except as provided In.subsection (2). the 64sel7We fbr tferennTfrTg: the'e*tent to (Source: Amended at. 12-111. Reg. 6118. which'emission reductions are creditable effective Harch 28. 1988) as offsets shaV) be the actual emissions of'-the-souree-frem-wh-lch-the-oftfset is to be obtained, to the extent they are Section 203.303 Baseline and Emission Offsets- ,'' Determination within' any -applicable maissions . i1wttatlOTS~or-tlTty Chepter-ur= the-Act- or - any applicable standards adopted.by USEPA a) An emission offset-must be obtained from a pursuant-to Section IM. and 1i2-.'of the source M operation prior to the-permit Clean Air.Act., and made .applicable.in appl icat 10h .f.or the npw or-modified source. Illinois pursuant to Section 9.1 of the 'Emission' offsets' oust ,,be- effective-prior to environmental Protection Act. start-up of the new or modified source. 2) IF the demonstration of reasonable b) The'emission.offsets'provided: fbrth'er progress and attainment or ambient air quality-standards approved-by- 1) Must be of the same pollutant and further USEPA'pursuant to Section 110(a)12) or be'of .a .type with approximately the -same 110(a)(3) of the Clean Air Act is based qualitative significance for public health and welfare as that attributed to-" on the applicable emlsstori limitations of thrs Chapter or the ACC or anyappTic-able- the Increase from a particular change: standards adopted by USEPA pursuant to Section til and 112 of the Clean Air Act 2} 'Must, In the case of a shutdown, have occurred since April 24. 1979 or the date~ - ~ and made applicable in Illinois pursuant to" Section-9..V of " the-EnrtronmentaV'- the area Is designated by the USCPA as a 'Protection Act for sources within-an honattainment area for the .-pollutant, area, and the source from which the- whichever Is more, recent, and the `offset is to be.obtained is.subject to shutdown source is being replaced by a similar new source; and must, in the case such limitations, the baseline for omens ska n~ be the' resser- or such- of a fuel combustion source, be based on limitation or the potential to emit of the type of fuel being burned at the time the source. - 31