Section 203.209 Significant Emissions Determination

Section 203

Section 203.209  Significant

Emissions Determination

a)         A net emission increase in the pollutant emitted is

significant if the rate of emission is equal to or in excess of the following:

1)         Carbon monoxide:  100 tons per year (tpy)

2)         Nitrogen oxides:  40 tpy for a nonattainment area for nitrogen

dioxide and 40 tpy for an ozone nonattainment area, except as provided in

subsection (b) of this Section

3)         Sulfur dioxide:  40 tpy

4)         Particulate matter measured as PM-10:  15 tpy

5)         Ozone:  40 tpy of volatile organic material, except as

provided in subsection (b) of this Section

6)         Lead:  0.6 tpy

b)         For areas classified as serious or severe nonattainment for

ozone, an increase in emissions of volatile organic material or nitrogen oxides

shall be considered significant if the net emissions increase of such air

pollutant from a stationary source located within such area exceeds 25 tons

when aggregated with all other net increases in emissions from the source over

any period of 5 consecutive calendar years which includes the calendar year in

which such increase occurred.  This provision shall become effective beginning

November 15, 1992, or such later date that an area is classified as a serious

or severe nonattainment area for ozone.