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The San Diego County Air Pollution Control District (SDAPCD) will be holding a public workshop on Thursday, May 7, 2015 to discuss proposed amendments to New Source Review (NSR) Rules 20.1, 20.2, 20.3, and 20.4. The rule updates are anticipated to remove insufficiencies, meet regulatory requirements, and improve consistency between federal, state, and local regulations.

Rule 20.1 New Source Review – General Provisions will be amended to include emission thresholds and compliance requirements for fine particulates (PM2.5). PM2.5 triggers will be included for air quality increments, Prevention of Significant Deterioration (PSD), major source thresholding, major modification thresholding, and Air Quality Impact Analysis (AQIA). The definition for Best Available Control Technology (BACT) will be revised to incorporate cost-effectiveness and practicable control approaches. The potential to emit (PTE), actual emissions, emission increases and emission reduction sections of this rule will also be updated to improve clarity of requirements and maintain consistency between different agencies.

Rule 20.2 New Source Review – Non-Major Stationary Sources will be updated to also apply to replacement emission units. The rule does not apply to portable emission units. Rule 20.3 New Source Review – Major Stationary Sources and PSD Stationary Sources will be amended to clarify the LAER requirements and how BACT exemptions to LAER will be obtained. The emission offset section in Rule 20.3 will be revised to consolidate requirements and add new provisions regarding emission reduction credits (ERC). Rule 20.4 New Source Review – Portable Emission Units clarified applicability section to include certain portable units at stationary sources and replacement portable emission units. Additional revisions to exemptions and definitions will also be incorporated into the proposed amendments for all four rules.

For more information regarding compliance with this rule, click here.