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Subpart 231-13: Tables and Emission Thresholds.

(Statutory authority: Environmental Conservation Law, §§ 1-0101, 3-0301, 3-0303, 19-0103, 19-0105, 19-0107, 19-0301, 19-0302, 19-0303, 19-0305; Federal Clean Air Act, §§ 160-169, 171-193 [42 U.S.C. 7470-7479; 7501-7515])

[Filed 1/20/09. Effective 30 days after filing. Amended adoption filed 02/03/09. Effective 3/5/09. Emergency adoption filed 5/26/11. Effective 5/26/11. Emergency adoption filed 7/19/11. Effective 7/19/11. Emergency adoption filed 9/16/11. Effective 9/16/11. Adoption filed 9/15/11. Effective 10/15/11.]

[This is page 1 of 1 of this Subpart. A complete list of Subparts in this regulation appears in the Chapter 3 contents page. A list of sections in this Subpart appears below.]

For administrative information about this posting, contact: Division of Air Resources. The Bureau of Stationary Sources at (518) 402-8403 is the contact for technical questions pertaining to this rule.

Contents:

Sec.

§231-13.1 Table 1 - Major facility thresholds and offset ratios for ozone nonattainment areas and the ozone transport region.

Area/Contaminant Classification Major Facility Threshold
(tons per year) 1
Offset Ratio
Marginal, Moderate, or Ozone Transport Region
VOC 50 At least 1.15:1
NOx 100 At least 1.15:1
Severe
VOC 25 At least 1.3:1
NOx 25 At least 1.3:1

1 - tons per year (tpy)

§231-13.2 Table 2 - Major facility thresholds and offset ratios for PM nonattainment areas

Area/Contaminant Classification Major Facility Threshold (tpy) Offset Ratio
Moderate
PM-101 100 At least 1:1
No classification
PM-2.51 100 At least 1:1
PM-2.5 Precursors
SO2
NOx

100
100

At least 1:1
At least 1:1

1 both the filterable and condensible fractions are to be included (see definitions of PM-10 and PM-2.5 in Part 200 of this Title).

§231-13.3 Table 3 - Significant project thresholds, significant net emissions increase thresholds, and offset ratios for ozone nonattainment areas and the ozone transport region

Area/Contaminant Classification Significant Project
Threshold (tpy)1
Significant Net Emission
Increase Threshold (tpy)
Offset Ratio
Marginal, Moderate, or Ozone Transport Region
VOC 40 40 At least 1.15:1
NOx 40 40 At least 1.15:1
Severe
VOC 2.5 > 25 At least 1.3:1
NOx 2.5 > 25 At least 1.3:1

1 - project emission potential threshold.

§231-13.4 Table 4 - Significant project thresholds, significant net emission increase thresholds, and offset ratios for PM nonattainment areas

Area/Contaminant Classification Significant Project Threshold (tpy)2 Significant Net Emission
Increase Threshold (tpy)
Offset Ratio
Moderate
PM-101 15 15 At least 1:1
No classification
PM-2.51 10 10 At least 1:1
PM-2.5 Precursors
SO2
NOx

40
40

40
40
At least 1:1
At least 1:1

1 both filterable and condensible fractions are to be included (see definitions of PM-10 and PM-2.5 in Part 200 of this Title).
2 project emission potential threshold.

§231-13.5 Table 5 - Major facility thresholds for attainment and unclassified areas

Contaminant Major Facility Threshold
(tpy)1
Carbon monoxide 100 / 250
Nitrogen oxides 100 / 250
Sulfur dioxide 100 / 250
Particulate matter 100 / 250
Particulate matter: PM-10 emissions2 100 / 250
Particulate matter: PM-2.5 emissions2 100 / 250
Ozone: as VOCs or NOx 100 / 250
Lead (elemental) 100 / 250
Fluorides 100 / 250
Sulfuric acid mist 100 / 250
Hydrogen sulfide (H2S) 100 / 250
Total reduced sulfur (including H2S) 100 / 250
Reduced sulfur compounds (including H2S) 100 / 250
Municipal waste combustor organics (measured as total tetra through octa-chlorinated dibenzo-p-dioxins and dibenzofurans) 100 / 250
Municipal waste combustor metals (measured as particulate matter) 100 / 250
Municipal waste combustor acid gases (measured as sulfur dioxide and hydrogen chloride) 100 / 250
Municipal solid waste landfills emissions (measured as nonmethane organic compounds) 100 / 250
Greenhouse Gases 100 / 250
and
100,0003
Any other regulated NSR contaminant 100 / 250

1 100 tpy threshold applies if the facility is one of the source categories listed in section 201-2.1(b)(21)(iii)(a) through (z) of this Title.
2 both filterable and condensible fractions are to be included (see definitions of PM-10 and PM-2.5 in Part 200 of this Title).
3 measured as CO2 equivalents

§231-13.6 Table 6 - Significant project thresholds and significant net emission increase thresholds for attainment and unclassified areas

Contaminant Significant Project Threshold 1/
Significant Net Emission Increase Threshold
Carbon monoxide 100 tpy
Nitrogen oxides 40 tpy
Sulfur dioxide 40 tpy
Particulate matter 25 tpy
Particulate matter: PM-10 emissions2 15 tpy
Particulate matter: PM-2.5 emissions2 10 tpy
Ozone: as VOCs or NOx 40 tpy
Lead (elemental) 0.6 tpy
Fluorides 3 tpy
Sulfuric acid mist 7 tpy
Hydrogen sulfide (H2S) 10 tpy
Total reduced sulfur (including H2S) 10 tpy
Reduced sulfur compounds (including H2S) 10 tpy
Municipal waste combustor organics (measured as total tetra through octa-chlorinated dibenzo-p-dioxin and dibenzofurans) 3.2 × 10-6 megagrams per year (3.5 × 10-6 tpy)
Municipal waste combustor metals (measured as particulate matter) 14 megagrams per year (15 tpy)
Municipal waste combustor acid gases (measured as sulfur dioxide and hydrogen chloride) 36 megagrams per year (40 tpy)
Municipal solid waste landfills emissions (measured as nonmethane organic compounds) 45 megagrams per year (50 tpy)
Greenhouse Gases Any increase
and
75,000 tpy3
Any other regulated NSR contaminant Any increase

1 project emission potential threshold.
2 both filterable and condensible fractions are to be included (see definitions of PM-10 and PM-2.5 in Part 200 of this Title).
3 measured as CO2 equivalents.

§231-13.7 Table 7 - Federal class I variance maximum allowable increase concentrations

Contaminant Maximum allowable increase
(micrograms per cubic meter)
Particulate Matter:
PM-10, annual arithmetic mean1 17
PM-10, 24-hr maximum1 30
PM-2.5, annual arithmetic mean1 4
PM-2.5, 24 hour maximum1 9
Sulfur dioxide:
Annual arithmetic mean 20
24-hr maximum 91
3-hr maximum 325
Nitrogen dioxide:
Annual arithmetic mean 25

1 both filterable and condensible fractions are to be included (see definitions of PM-10 and PM-2.5 in Part 200 of this Title).

§231-13.8 Table 8 - Maximum allowable increase in SO2 concentrations for gubernatorial variances

Maximum Allowable Increase
(Micrograms per cubic meter)
Period of exposure Terrain areas
Below 900 ft At or Above 900 ft
24-hr maximum 36 62
3-hr maximum 130 221

§231-13.9 Table 9 - Global Warming Potential Values for calculating CO2 equivalents.

Greenhouse Gas Global Warming Potential
CO2 1
CH4 21
N2O 310
SF6 23,900
Hydrofluorocarbons (HFC) 12 to 11,7001
Perfluorocarbons (PFC) 6,500 to 9,2001

1 see 74 FR 56395-56396, Table A-1, for specific values of HFC and PFC (see Table 1, Section 200.9 of this Title).