The report disseminates information provided to the NATICH data base by State and local air agencies and EPA on their air toxics activities. It both updates and extends (in new tables) the information in the first six reports. The report includes a listing of State and local agencies that have provided information to the clearinghouse, air toxics contacts, regulatory program information, acceptable ambient concentration guidelines or standards and the bases of those guidelines/standards, pollutant research information, methods development activities, permitting data, source testing data, ambient monitoring information, emissions inventory information, and selected EPA risk assessment information. Because of the large volume of data that now resides in the data base, the document reports only a subset of permitting and source data.