The U.S. Environmental Protection Agency (EPA or the agency) is taking final action to amend the Standards and Practices for All Appropriate Inquiries to update an existing reference to a standard practice revised by ASTM International, a widely recognized standards development organization. Specifically, this final rule amends the All Appropriate Inquiries Rule to reference ASTM International's E2247-16 "Standard Practice for Environmental Site Assessments: Phase I Environmental Site Assessment Process for Forestland or Rural Property" and allow for its use to satisfy the statutory requirements for conducting all appropriate inquires under the Comprehensive Environmental Response, Compensation and Liability Act (CERCLA).