Final Rule: Additional Revised Air Quality Designations for the 2015 Ozone National Ambient Air Quality Standards: El Paso County, Texas and Weld County, Colorado
EPA completed its response to the D.C. Circuit Court’s remand of certain air quality designations for the 2015 Ozone National Air Quality Standards by expanding its initial designations for the Doña Ana County (Sunland Park Area), New Mexico and Denver Metro/North Front Range, Colorado nonattainment areas. In the case of the Doña Ana County, New Mexico area, the nonattainment area now includes all of El Paso County, Texas and has been renamed El Paso-Las Cruces, Texas-New Mexico nonattainment area. The Denver Metro/North Front Range, Colorado nonattainment area now includes all of Weld County.
Improving air quality to protect public health is a shared goal. Through local, state, tribal, and national programs, we have made considerable progress to reduce ozone levels throughout the country. Nationwide, monitored levels have dropped 25 percent since 1990. EPA will continue to work with our state, tribal and local partners to assure that air quality continues to improve.
Read the pre-publication version of the Final Rule: Additional Revised Air Quality Designations for the 2015 Ozone National Ambient Air Quality Standards: El Paso County, Texas and Weld County, Colorado (pdf)
Summary Table: Nonattainment and Unclassifiable Area Designations for the 2015 Ozone Standards (pdf)
Final Technical Support Document: Texas - El Paso-Las Cruces TX-NM (pdf)
See other area designations for the 2015 Ozone Standards
For assistance accessing any of the documents on this page, please contact Carla Oldham at 919-541-3347 or oldham.carla@epa.gov.