This final rule codifies EPA's interpretation and enforcement policy regarding section 6(a)(2) of the Federal Insecticide, Fungicide and Rodenticide Act (FIFRA), which requires pesticide registrants to report information concerning unreasonable adverse effects of their products to EPA. The purpose of the rule is to clarify what failures to report information, or delays in reporting, will be regarded by EPA as violations of FIFRA section 6(a)(2), actionable under FIFRA sections 12(a)(2)(B)(ii) and 12(a)(2)(N). In comparison to previous EPA policy statements, some reporting requirements are expanded, and others reflect increased flexibility or exemptions for reporting specific types of information. When effective, this rule will supersede all previous policy statements pertaining to section 6(a)(2). EFFECTIVE DATE: This rule will become effective June 16, 1998. FOR FURTHER INFORMATION CONTACT: By mail: James V. Roelofs, Office of Pesticide Programs (7506C), U.S. Environmental Protection Agency, 401 M St., SW.,, Washington, DC 20460. Office location, telephone number and e-mail address: Crystal Mall #2, Rm. 1113, 1921 Jefferson Davis Highway, Arlington, VA, (703) 308-2964, e-mail: roelofs.jim@epamail.epa.gov. SUPPLEMENTARY INFORMATION: Electronic Availability: