The following table presents the latest dates by which the national standards are to be attained.
Attainment Dates Established by Clean Air Act of 1990----------------------------------------------------------------------------------------------------------------
Pollutant
-------------------------------------------------------
Air quality control region and nonattainment area SO2
-------------------- PM-10 NO2 CO O3
Primary Secondary----------------------------------------------------------------------------------------------------------------AQCR 107:
Androscoggin County................................. (\a\) (\b\) (\a\) (\a\) (\a\) (\g\)
Kennebec County..................................... (\a\) (\b\) (\a\) (\a\) (\a\) (\g\)
Knox County......................................... (\a\) (\b\) (\a\) (\a\) (\a\) (\g\)
Lincoln County...................................... (\a\) (\b\) (\a\) (\a\) (\a\) (\g\)
Waldo County........................................ (\a\) (\b\) (\a\) (\a\) (\a\) (\d\)
Oxford Cnty. (Part) See 40 CFR 81.320............... (\a\) (\b\) (\a\) (\a\) (\a\) (\e\)
Franklin Cnty. (Part) See 40 CFR 81.320............. (\a\) (\b\) (\a\) (\a\) (\a\) (\e\)
Somerset Cnty. (Part) See 40 CFR 81.320............. (\a\) (\b\) (\a\) (\a\) (\a\) (\e\)AQCR 108:
Aroostook Cnty. (Part) See 40 CFR 81.320............ (\a\) (\b\) (\c\) (\a\) (\a\) (\a\)
Remainder of AQCR................................... (\a\) (\b\) (\a\) (\a\) (\a\) (\a\)
AQCR 109:
Hancock County...................................... (\a\) (\b\) (\a\) (\a\) (\a\) (\d\)
Millinocket......................................... (\e\) (\e\) (\a\) (\a\) (\a\) (\a\)
Remainder of AQCR................................... (\a\) (\b\) (\a\) (\a\) (\a\) (\a\)AQCR 110:
York County......................................... (\a\) (\b\) (\a\) (\a\) (\a\) (\g\)
Cumberland County................................... (\a\) (\b\) (\a\) (\a\) (\a\) (\g\)
Sagadahoc County.................................... (\a\) (\b\) (\a\) (\a\) (\a\) (\g\)
Oxford Cnty. (Part) See 40 CFR 81.320............... (\a\) (\b\) (\a\) (\a\) (\a\) (\e\)AQCR 111................................................ (\a\) (\b\) (\a\) (\a\) (\a\) (\a\)----------------------------------------------------------------------------------------------------------------\a\ Air quality levels presently below primary standards or area is unclassifiable.\b\ Air quality levels presently below secondary standards or area is unclassifiable.\c\ 12/31/94.\d\ 11/15/94 (one-year extension granted).\e\ 11/15/95.\g\ 11/15/96. [60 FR 33352, June 28, 1995]