- (a) Within areas of high source density or higher receptor density and/or within areas affected by levels of air contamination, which, due to their intensity and/or duration, threaten to constitute a significant departure from the National Ambient Air Quality Standards, the Division of Environmental Quality may prescribe air quality control requirements that are more restrictive and more extensive than those provided in the rules of general application within said areas.
- (b) Such requirements may be kept in effect for such period and to such extent the division deems necessary to adequately deal with such conditions.