In the second episode of our conversation with John Slade, we continue to explore the National Ambient Air Quality Standard (NAAQS) designation process. We discuss situations where individual companies are brought into a designation process by agencies, nonattainment permitting requirements for large sources, and timing considerations for large project permitting when a NAAQS change is imminent. We wrap up the conversation by discussing how companies can be proactive by tracking ambient monitoring data in the midst of NAAQS changes such as the upcoming fine particulate NAAQS revision.