TITLE 35: ENVIRONMENTAL PROTECTION
SUBTITLE B: AIR POLLUTION
CHAPTER II: ENVIRONMENTAL PROTECTION AGENCY
PART 255 GENERAL CONFORMITY: CRITERIA AND PROCEDURES
SECTION 255.120 APPLICABILITY


 

Section 255.120  Applicability

 

a)         Conformity determinations for Federal actions related to transportation plans, programs, and projects developed, funded, or approved under Title 23 U.S.C. or the Federal Transit Act (49 U.S.C. 1601 et seq.) are not subject to the requirements of this Part.

 

b)         For Federal actions not covered by subsection (a) of this Section and not exempt pursuant to Section 255.170 of this Part, a conformity determination is required for each pollutant where the total of direct and indirect emissions in a nonattainment or maintenance area caused by a Federal action would equal or exceed any of the rates in subsection (b)(1) or (b)(2) of this Section:

 

1)         Nonattainment Areas:

 

 

Tons/Year

Ozone (VOC's or NOx):

 

Serious NAA's

50

Severe NAA's

25

Extreme NAA's

10

 

 

Other ozone NAA's outside an ozone transport region

100

 

 

Marginal and moderate NAA's inside an ozone transport region:

 

 

VOC

50

NOx

100

 

 

Carbon monoxide:

 

All NAA's

100

 

 

SO2 or NO2:

 

All NAA's

100

 

 

PM-10:

 

Moderate NAA's

100

Serious NAA's

70

 

 

Pb:

 

All NAA's

25

 

2)         Maintenance Areas:

 

 

Tons/Year

Ozone (NOx) SO2 or NO2:

 

All maintenance areas

100

 

 

Ozone (VOC's):

 

Maintenance areas inside an ozone transport region

50

Maintenance areas outside an ozone transport region

100

 

 

Carbon monoxide:

 

All maintenance areas

100

 

 

PM-10:

 

All maintenance areas

100

 

 

Pb:

 

All maintenance areas

25