Any election by an MPO to shorten the timeframe of a conformity determination under 40 CFR 93.106(d) requires approval of the Department of Environmental Quality or the Lane Regional Air Protection Agency, as applicable. A shortened timeframe may be appropriate, for example, when projected future emissions fail to meet a Motor Vehicle Emissions Budget (MVEB) due to calculation methods that are inconsistent with the methods used to determine the MVEB. Such circumstances may exist for example, when emissions estimation methods have changed from those used to establish the MVEB.

Statutory/Other Authority

ORS 468.020

Statutes/Other Implemented

ORS 468A.035

History

DEQ 2-2010, f. & cert. ef. 3-5-10
DEQ 14-1999, f. & cert. ef. 10-14-99, Renumbered from 340-020-0770
DEQ 17-1998, f. & cert. ef. 9-23-98
DEQ 7-1995, f. & cert. ef. 3-29-95