A review of Indiana's Ambient Air Monitoring Network is to be conducted as per 40 CFR Part 58 Subpart B 58.10. The review is to assess the current air monitoring network and determine if any changes are necessary to meet the monitoring goals and monitoring projects across the state. All criteria pollutant monitoring networks, carbon monoxide, lead, nitrogen dioxide, ozone, PM10, PM2.5, and sulfur dioxide, are evaluated. Other networks such as toxics, PM2.5 speciation, PAMS, metals, and meteorology are evaluated as well. Any network modifications become part of the 2020 Network Plan.

• Proposed 2020 Network Review [PDF]

Previous Ambient Air Monitoring Network Plans

• Indiana 2019 Ambient Air Monitoring Network Plan [PDF]
• Indiana 2018 Ambient Air Monitoring Network Plan [PDF]
  • Amendment to Lead Monitoring Network [PDF]
• Indiana 2017 Ambient Air Monitoring Network Plan [PDF]
  • PAMS Ozone Precursors Amended [PDF]
• Indiana 2016 Ambient Air Monitoring Network Plan [PDF]
• Indiana 2015 Ambient Air Monitoring Network Plan [PDF]
• Indiana 2014 Ambient Air Monitoring Network Plan
  • Part 1 [PDF]
  • Part 2 [PDF]
  • Continuous PM2.5 Data Exclusion [PDF]
• Indiana 2013 Ambient Air Monitoring Network Plan [PDF]
• Indiana 2012 Ambient Air Monitoring Network Plan [PDF]
• Indiana 2011 Ambient Air Monitoring Network Plan [PDF]
• Indiana 2010 Ambient Air Monitoring Network Plan [PDF]
• Indiana 2009 Ambient Air Monitoring Network Plan [PDF]
• Indiana 2008 Ambient Air Monitoring Network Plan [PDF]