EPA Revising Chromium Risk Study As It Weighs Industry Findings

The Environmental Protection Agency is delaying until next year its pending Integrated Risk Information System (IRIS) assessment of the risks of hexavalent chromium (Cr6) in order to craft a new version that will weigh industry-funded studies on the chemical's cancer risks that industry says warrant a weaker risk number than the agency's current draft. About two years ago OSHA issued a direct final rule requiring employers to notify workers of any exposure to hexavalent chromium, regardless of whether the exposures exceed OSHA's permissible exposure limit, in line with the provisions of a cour