The file contains data compiled for the Resource Conservation Recovery Act. Notification of Hazardous Waste Activity, EPA Form 8700-12, was used to collect the data. The file was updated with information compiled from the Application for a Hazardous Waste Permit, EPA Form 3510-3. The data include names and addresses of the facility owner and operator, as well as the facility contact name and number. The data indicate whether a facility is a generator, treatment/storer/disposer, and/or transporter of hazardous waste. There is also a listing of code numbers of waste handled taken from 40 CFR, Part 261. The file is produced on a quarterly basis.