The department is proposing amendments to Chapter 62-210, F.A.C., in response to requirements imposed by the Environmental Protection Agency (EPA) in its recent conditional approval of Florida’s Prevention of Significant Deterioration (PSD) air permitting program under the federal Clean Air Act. The proposed amendments clarify the definition of “New Emissions Unit” as used in the PSD program. They also add ozone depleting substances (ODS) to the definitions of “Regulated Air Pollutant” and “Significant Emissions Rate” such that emission of ODS are treated the same under Florida’s PSD rules as under EPA’s PSD regulations.