Prior to receiving an approval order under Rule R307-401, a new source in an attainment area with a total controlled emission rate per pollutant greater than or equal to amounts specified in Table 1, or a modification to an existing source located in an attainment area which increases the total controlled emission rate per pollutant of the source in an amount greater than or equal to those specified in Table 1, shall conduct air quality modeling, as identified in Section R307-410-3, to estimate the impact of the new or modified source on air quality unless previously performed air quality modeling for the source indicates that the addition of the proposed emissions increase would not violate a National Ambient Air Quality Standard, as determined by the director.

TABLE 1

POLLUTANT EMISSIONS

sulfur dioxide 40 tons per year

oxides of nitrogen 40 tons per year

PM10 - fugitive emissions 5 tons per year

and fugitive dust

PM10 - non-fugitive emissions 15 tons per year

PM2.5 - combined non-fugitive

emissions, fugitive dust, and

fugitive emissions 10 tons per year

carbon monoxide 100 tons per year

lead 0.6 tons per year

KEY: air pollution, modeling, hazardous air pollutant, stack height

Date of Last Change: August 6, 2020

Notice of Continuation: May 4, 2022

Authorizing, and Implemented or Interpreted Law: 19-2-104