Memo on Public Hearing Requirements for 1990 Base-Year Emission Inventory for Ozone and Carbon Monoxide Nonattainment Areas

This 1992 memorandum clarifies that emissions inventories for a State Implementation Plans (SIP) are subject to the public hearing requirements of the Clean Air Act. 

• Public Hearing Requirements for 1990 Base-Year Emissions Inventories for Ozone and Carbon Monoxide Nonattainment Areas (pdf) (270.8 KB)