State voluntarily completes the corrective actions or submits a SIP revision in
response to an EPA SIP call.
* In the notices of proposed rulemaking of December 16, 1999, EPA originally asked the States
with serious and severe ozone nonattainment areas to commit to submit their mid-course review by
the end of 2003; the selection of this time by EPA and the States was based in large part on the
expectation that NOx emission reduction controls under EPA’s NOx SIP call would be implemented
by that time. However, in August 2000, the U.S. Court of Appeals for the D.C. Circuit ruled that
EPA could not require compliance with the NOx SIP call reductions before 5/31/04. Therefore,
many States affected by the NOx SIP call emission reductions revised their commitment to submit
the MCR on the schedule suggested above.
It is recognized that a revised attainment demonstration submitted in response to the MCR may not
provide emission reductions in sufficient time to result in attainment for areas with an attainment date
earlier than November 2007 (however, see section D below). If implemented in the ozone season of
2007, these reductions should be sufficient for an area with a 2007 attainment date to qualify for the
first of two possible one-year attainment date extensions.
In cases where the analysis will not result in corrective actions by the ozone season of the
attainment year, the analysis should more correctly be termed an “accelerated attainment assessment”
rather than a true mid-course review, since it will serve the purpose of beginning corrective analyses
and actions early when it appears that the SIP will not result in attainment by the attainment date.
B. Where Failure to Make Progress Is Due to Transport
Section 2.2 of the MCR technical guidance provides a tool for assessing the relative importance of
transported emissions compared to local emissions. The analysis may show that an area’s failure to
make adequate progress toward attainment may be largely due to transported ozone and precursors.
The State should identify this situation in its MCR and recommend or propose ways of addressing
control, including filing a petition with EPA under section 126 to require control of upwind sources
contributing to the continuing nonattainment. To the extent that EPA determines that the lack of
adequate progress is due to transport from across State lines, EPA will use its authority under the Clean
Air Act to address the contributing emission sources. To the extent that the lack of progress is due to
local emissions, EPA will address that situation through an appropriate remedy (e.g., a call for a SIP
revision if additional control is needed or a finding of failure to implement and/or federal enforcement if
existing controls requirements are not being enforced).
n1201 - n1202 - n1203 - n1204 - n1205 - n1206 - n1207 - n1208 - n1209 - n1210 - n1211 - n1212 - n1213 - n1214 - n1215 - n1216 - n1217 - n1218 - n1219 - n1220 - n1221 - n1222 - n1223 - n1224 - n1225 - n1226 - n1227 - n1228 - n1229 - n1230 - n1231 - n1232 - n1233 - n1234 - n1235 - n1236 - n1237 - n1238 - n1239 - n1240 - n1241 - n1242 - n1243 - n1244 - n1245 - n1246 - n12247 - n1248 - n1249 - n1250
castellano: DISPER CUSTIC DESCAR RADIA italiano:
deutsch: DIS CUS DES RAD
castellano: DIS CUS DES RAD english: DIS CUS DES RAD
português: DIS CUS DES RAD italiano: DIS CUS DES RAD
français: DIS CUS DES RAD