PBR and Standard Permit Emission Limits
Impacts Analysis Not Required if Total Emissions
Less Than
Limit of PBR
Level 1
(180 day post
construction registration)
Limit of PBR
Level 1
(90 day post construction
registration)
Limit of PBR
Level 2
(preconstruction
registration)
Limit of Standard
Permit (preconstruction
registration)
NOx
9 lb/hr
9
25
lb/hr
tpy
25
100
lb/hr
tpy
50
250
lb/hr
tpy
53
250
lb/hr
tpy
H2S
0.025 lb/hr
0.5
2.2
lb/hr
tpy
2
4.5
lb/hr
tpy
6
9
lb/hr
tpy
6
15
lb/hr
tpy
SO2
0.42 lb/hr
5.4
10
lb/hr
tpy
8
15
lb/hr
tpy
12
25
lb/hr
tpy
12
50
lb/hr
tpy
CO
impacts analysis never required lb/hr
11.4
50
lb/hr
tpy
22.8
100
lb/hr
tpy
57
250
lb/hr
tpy
57
250
lb/hr
tpy
impacts analysis never required -
0.5
tpy
1
tpy
2
tpy
not specified, dictated by benzene, toluene,
xylene
25
5
lb/hr
tpy
50
10
lb/hr
tpy
75
25
lb/hr
tpy
200
250
lb/hr
tpy
impacts analysis never required -
0.9
lb/hr
1.5
lb/hr
2
lb/hr
3
10
lb/hr
tpy
PM2.5and10
Total VOC
formaldehyde
4
tpy
benzene
0.013 lb/hr
0.8
1.2
lb/hr
tpy
1.8
2.5
lb/hr
tpy
2.25
3.5
lb/hr
tpy
20
10
lb/hr
tpy
toluene
0.146 lb/hr
3.1
lb/hr
6
lb/hr
7
lb/hr
35
10
lb/hr
tpy
xylene
0.08 lb/hr
1.7
4
lb/hr
19
10
lb/hr
tpy
lb/hr
3
lb/hr
Note 1: To explain the information on this chart - xylene is taken as an example. The first column shows that if total site-wide xylene emissions are less than 0.08 lb/hr, no impacts analysis is
required to be performed. The next four columns show the xlylene emission limits for each authorization level - Level 1 (180 day post construction registration), Level 1 (90 day post construction
registration), Level 2 (preconstruction registration), and Standard Permit (preconstruction registration). If total site-wide xylene emissions are less than 1.7 lb/hr, then xylene emissions fall within
the limit of PBR Level 1 (180 day post construction registration). If total site-wide xylene emissions are equal to or greater than 1.7 lb/hr and less than 3 lb/hr, then xylene emissions fall within
the limits of PBR Level 1 (90 day post construction registration). If total site-wide xylene emissions are equal to or greater than 3 lb/hr and less than 4 lb/hr, then xylene emissions fall within the
limit of PBR Level 2 (preconstruction registration).
If total site-wide xylene emissions are equal to or greater than 4 lb/hr and less than 19 lb/hr, then xylene emissions fall within the limit of the Standard Permit (preconstruction registration).
Note 2: The site is required to use the highest level of authorization applicable based on the levels the pollutant emissions fall into. For example, if xylene emissions are 1.5 lb/hr, which is below
the limits of PBR Level 1 (180 day post construction registration), but NOx emissions are 30 lb/hr, which is greater than the limits of PBR Level 1 (180 day post construction registration), but below
the limits of PBR Level 2 (preconstruction registration), then the site must be authorized under PBR Level 2 (preconstruction registration), assuming none of the other pollutant emissions exceed
the limits of this level.