New Source Review for PM2.5

1
New Source Review for PM2.5

• David Campbell, EPA Region 3

2
Currently Effective PM2.5 Rules

• October 23, 1997 and April 5, 2005 Transition
  Guidance for the Implementation of NSR
  Requirement in PM2.5 Nonattainment Areas
• Use PM10 as a surrogate for PM2.5
• 100 tpy PTE as major source threshold
• 1-to-1 emissions offsets
• Source may quantify PM2.5 instead of PM10

3
Proposed NSR PM2.5 Elements

• Applicability to PM2.5 Precursors
• SO2 in for NA NSR and PSD.
• NOx presumed in for NA NSR and PSD.
• VOC presumed out for NA NSR and PSD.
• NH3 presumed out for NA NSR out for PSD.
• Major Source Threshold
• PSD 100/250 tpy
• NA NSR 100 tpy

Slides may not present all options propose
11/01/2005 70 FR 65984
4
Proposed NSR PM2.5 Elements

• Significant Emissions Rate
• Direct PM2.5 10 tpy
• SO2 40 tpy
• NOx 40 tpy
• VOC 40 tpy or as determined by SIP
• NH3 Determined by SIP
• Condensible PM2.5 Emissions
• Will be included in direct PM emissions for
  applicability determinations.

5
Proposed NSR PM2.5 Elements

• Control Technology BACT and LAER
• Applies to direct PM2.5, SO2, and other included
  precursors.
• PSD Air Quality Impact Analysis
• Applies to PM2.5.
• PSD Preconstruction Monitoring
• Case-by-case network evaluation.
• Exemptions based on sig. monitored conc. (SMC).

6
Proposed NSR PM2.5 Elements

• NA NSR Offsets
• Applies for direct PM2.5 emissions and included
  precursors at a minimum 11 ratio.
• Interpollutant Offset Trading
• Allowed with attainment plan modeling
  demonstration.

7
Proposed NSR PM2.5 Elements

• Transition for PSD
• SIPs due by April 5, 2008.
• Continue to Apply Existing Transition Guidance
  with PM10 as surrogate.
• Transition for NA NSR
• SIPs due by April 5, 2008.
• NA NSR applies at designation through Appendix S
  (or existing SIP).

8
Proposed NSR PM2.5 Elements

• Treatment of Precursors During SIP Development
  Period
• Minor NSR
• PM2.5 requirements must be included in minor NSR
  programs.

9
PM2.5 Increments, SILs and SMCs -Proposed rule
Sept. 21, 2007 72 FR 54112
Proposed PM2.5 Increments, SILs and SMCs 72 FR 54112 Proposed PM2.5 Increments, SILs and SMCs 72 FR 54112 Proposed PM2.5 Increments, SILs and SMCs 72 FR 54112 Proposed PM2.5 Increments, SILs and SMCs 72 FR 54112 Proposed PM2.5 Increments, SILs and SMCs 72 FR 54112 Proposed PM2.5 Increments, SILs and SMCs 72 FR 54112 Proposed PM2.5 Increments, SILs and SMCs 72 FR 54112
Option Proposed Increments (µg/m3) Proposed Increments (µg/m3) Proposed Increments (µg/m3) Proposed Increments (µg/m3) Proposed Increments (µg/m3) Proposed Increments (µg/m3)
Option Class I Class I Class II Class II Class III Class III
Annual 24-hr Annual 24-hr Annual 24-hr
1 1 2 4 9 8 18
2A 1 2 4 9 8 18
2B 1 2 5 9 10 18
Proposed Significant Impact Levels (µg/m3) Proposed Significant Impact Levels (µg/m3) Proposed Significant Impact Levels (µg/m3) Proposed Significant Impact Levels (µg/m3) Proposed Significant Impact Levels (µg/m3) Proposed Significant Impact Levels (µg/m3)
1 0.04 0.08 1.0 5.0 1.0 5.0
2 0.16 0.24 0.8 4.0 0.8 4.0
3 0.06 0.07 0.3 1.2 0.3 1.2
Significant Monitoring Concentrations (µg/m3) Significant Monitoring Concentrations (µg/m3) Significant Monitoring Concentrations (µg/m3) Significant Monitoring Concentrations (µg/m3) Significant Monitoring Concentrations (µg/m3) Significant Monitoring Concentrations (µg/m3)
1 10.0 10.0
2 7.9 7.9
3 2.3 2.3
10
Other Rules Affecting PM2.5

• Clarification of PSD Increment Modeling Rule
• Proposed rule June 6, 2007 72 FR 31372