Document emGVNpmO2yOXV6kgEKY858jL4

d) The owner or operator shall provide a detailed, showing that the proposed emission limitations constitute lAER.. Such demonstration shall Include: --- 1) 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 thecTeanfuel are available and a commitment to a specified alternative control measure which would achieve the sane degree or emission reduction If return Of the. dirtier fuel is proposed; 2) Alternative emission limitations, and i) Such other reasonable information as the' Agency may request as necessary to determine whether-the proposed emission limitation Is UER. ' (Source: Amended.at 1.2 111. Reg. 6118. effective Harcii 22. 19881 ' Section 203.302. Maintenance .of Reasonable Further Progress and Emission Offsets . , .* . . ` it- a) The owner or operator of a new major source or major modification shall provide emission ' offsets equal to or greater than the allowable^emissions from the source or the net increase In emissions from the J modification sufficient to allow the Agency to determine that the source or modification will not .Interfere with reasonable further- " progress as set forth In Section 173 of the Clean Air Act. b) The Agency shall allow the use of all or some portion.bt. the.available growth margin to . satisfy .subsection (a), if the owner or ; operator can evidence that-the.possible ". sources ,oJf .emissipn offsets were investigated and none were available at that time. (Source: Amended at. i2 111. Reg. 6118. effective Harch 28. 1988) Section 203.303 Baseline and Emission Offsets Determination a) An emission offset-must be obtained from a source In operation prior to the permit application .for the nqw or-modified source. Emission offsets must J>e effective prior to start-up of the. new or modified source. b) "The. emission,off sets'provided: 1) Must be of the same pollutant and further be "of a type with approximately'the same " qualitative significance for public health and welfare as that attributed to the Increase from a particular change: 2) Must, in the case of a shutdown, have occurred since April 24. 1979 or the date the area is designated by the USEPA as a honattainment area for the pollutant, whichever is more recent, and the shutdown source is being replaced by a similar new source; and must, in the case of a fuel combustion source, be based on the type of fuel being burned at the time 3) Must;.inthe.case of a shutdown of a source or permanent curtailment of production, or operating hours occurring , oh or after the date .a permit application is "filed for a new or modified source, have been made known to the affected work force: 4) Must", .in .the case of a past shutdown of a swrcer.or'. permanent curtailment of production or operating hours, have occurred "since April 24. 1979. or the - date the>rea is designated a noiiatfaffihentareaforTth'epoTTUtartt.' ,r. .whichever Is more recent. and the proposed new or modified source must be a " replacement, for the.-shutdown or curtailment: 5) Must be. enforceable by.-permit; `' 1 6).' Must not ..have-been previously relied on. ar-demonstrated- by-the- Agency. in Issuing any .permit pursuant to 3S 111. Adm. Code 201.142 ior 20.1..1.43 or this Part, or for ........ tfenonstratlhg airtatrtrtent' or reasonable" " further progress. . cy The-,-baselines for determining emi ss Ion . offsets, are as follows: 1) `Except as provided in.subsection (2). the bSselTffe ror detCrminirtg the'extent to which emission reductions are creditable As offsets shal-1 be the actual emissions .--- of- the-soorce fr-om whictv the offset is to be obtained, to the extent .they are within" any applicable emissions . Tlmnattons of trtts Chapter-or the-Aet or any applicable standards adopted by USEPA pursuant-to Section Hi. and 112;of the Clean Air Act,, and made, applicable,,in Illinois pursuant to Section 9.1 of the Environmental Protection Act. 2.) If the demonstration of reasonable further progress and attainment of ambient air quality-standards-approved-byUSEPA" pursuant to Section 110(a)(2) or 110(a)(3) of the Clean Air Act is based on the applicable emission limitations of this Chapter or the AcC or any applicable* standards adopted by USEPA pursuant to Section ill and 112 of the Clean Air Act and made applicable in Illinois pursuant - ' toSeettorr 9.1 erf the- Environmental---"Protection Act for sources within an area, and the source from which theoffset is-to be.obtained is.subject to such limitations, the baseline for omets sfian ee the Tesser afstretrlimitation or the potential to emit of the source. - 31 -