In the United States, the list of current non-attainment areas can be viewed on EPA’s Greenbook website here: www.epa.gov/green-book/green-book-pm-25-2012-area-information. As of May 2018, some locations within California, Idaho, Ohio, and Pennsylvania are listed as non-attainment areas for particulate matter 2.5. If your project is located outside the United States, you’ll need to research data on recorded readings for particulate matter at your project location. If the three-year average of the weighted annual mean for particulate matter exceeds 15 ug/m3, your location is in a non-attainment area.
EPA’s Greenbook may also be referenced to confirm the ozone concentration for projects located in the United States and compare to the prerequisite threshold of 0.107 ppm. Once you are on the Greenbook website, navigate to the section for 8-Hour Ozone (2008) Designated Area Design Values. Per the Greenbook as of July 2017, the current design value for ozone concentration for one area (Los Angeles – South Coast Air Basin, CA) exceeds the limit of 0.107 ppm. As with particulate matter, projects located outside the United States must find measured data for ozone concentrations at the project location and compare to the prerequisite requirement.
How do I find whether my project is located in a non-attainment area for particulate matter or exceeds the prerequisite ozone requirements?