40 C.F.R. § 52.1523

Current through October 31, 2024
Section 52.1523 - Attainment dates for national standards

The following table presents the latest dates by which the national standards are to be attained. The dates reflect the information presented in New Hampshire's plan.

Air quality control region SO2 PM10 NO2CO O3
Primary Secondary
NH portion Andoscoggin Valley Interstate AQCR 107abaaaa
Central NH Intrastate AQCR 149abaaaa
NH portion Merrimack Valley-Southern NH Interstate 121:
Belknap Countyabaaaa
Sullivan Countyabaaaa
Cheshire Countyabaaad
Portmouth-Dover-Rochester area (See 40 CFR 81.330 )abaaae
NH portion Boston-Lawrence-Worcester area (See 40 CFR 81.330 )abaaaf
Manchester area (See 40 CFR 81.330 )abaaac

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. November 15, 1993.
d. November 15, 1995.
e. November 15, 1999.
f. November 15, 2007.

40 C.F.R. §52.1523

45 FR 24876, Apr. 11, 1980, as amended at 50 FR 51250, Dec. 16, 1985; 51 FR 21550, June 13, 1986; 65 FR 71065 , Nov. 29, 2000; 67 FR 72575 , Dec. 6, 2002