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Applications

  1. Gas Compression
  2. Power Generation
  3. Rail
  4. NESHAP Regulations
  5. Industrial
  6. Air Compression
  7. Liquids Pumping
  8. Bio-Gas
  9. Greenhouse CO2 Enrichment
  10. Industrial Marine

Engine Type

  1. Bi-Fuel Diesel and Natural Gas
  2. Diesel
  3. Natural Gas Lean Burn
  4. Natural Gas Rich Burn

Noise Control

  1. Yes
  2. No

Engine Size

  1. 20 to 200 hp
  2. 200 to 1350 hp
  3. 1350 to 10,000 hp
  4. 10,000 hp and above

Regulated Pollutants

  1. NOx
  2. NO2
  3. CO
  4. VOC (NMNEHC)
  5. HAP's
  6. Particulate Matter (PM)
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EPA releases final PM 2.5 nonattainment precursor demonstration guidance.

July 1, 2019

On May 30, 2019, the U.S Environmental Protection Agency (EPA) released a final guidance document for Fine Particulate Matter (PM2.5) Precursor Demonstrations for analyzing contributions of PM2.5 precursors to ambient concentrations of PM2.5 in areas designated as nonattainment for the PM2.5 National Ambient Air Quality Standards (NAAQS) according to a June 20, 2019 Trinity Consultants report.pm 2.5 graphic

Chemical reactions involving sulfur dioxide (SO2), oxides of nitrogen (NOX), volatile organic compounds (VOC), and ammonia cause the formation of secondary PM2.5. These emissions are considered precursor emissions for PM2.5 and are required to be evaluated in all PM2.5 nonattainment area State Implementation Plans (SIPs).

This guidance is published to assist air agencies in the development of optional PM2.5 precursor demonstrations as permitted by the PM2.5 SIP Requirements Rule. This rule establishes that PM2.5 precursor emissions must be evaluated for potential control measures in any PM2.5 attainment plan, and any nonattainment new source review (NNSR) program.

The rule allows air agencies to submit an optional precursor demonstration, such as a concentration-based analysis or sensitivity-based analysis, showing that emissions of one or more of those precursors would not contribute significantly to PM2.5 levels that exceed the standard.

If the EPA approves a precursor demonstration for a particular nonattainment area, the attainment plan and NNSR program can exclude the precursor from certain control requirements.

This guidance provides awareness of different approaches that can be made when working in a PM2.5 nonattainment area. On its Web page for the Guidance Document EPA also provides a link to Webinar Slides for the Draft PM2.5 Draft Precursor Demonstration Guidance.

What this means to you
EPA has released its final guidance final guidance document for Fine Particulate Matter (PM2.5) Precursor Demonstrations for analyzing contributions of PM2.5 precursors to ambient concentrations of PM2.5 in areas designated as nonattainment for the PM2.5 National Ambient Air Quality Standards.

MIRATECH can help
Contact MIRATECH for stationary engine emission particulate matter control.