Robin Rowland of the Ryerson Polytechnic University School of Journalism in Canada, recommends a database called the "Public Information Dataset Manifest and Generator Registration Information," which tracks all the hazardous waste generators, carriers and receivers in Canada. "If a U.S. company on the border trucks its waste across the border to Canada or vice versa, it is listed," Rowland says. "U.S.

data is dirty. It lists 'USA' under province in some conditions." To get the free database, send three high-density PC disks to: Ontario Ministry of Environment and Energy, Environmental Monitoring and Reporting Branch, Environment Information and Systems Section, 40 St. Clair Ave. West Floor 12, Toronto M4V IM2