The Environmental Protection Agency (EPA) is amending the standards and practices for conducting all appropriate inquiries under the Comprehensive Environmental Response, Compensation and Liability Act (CERCLA) to remove the reference to ASTM International's E1527-05 standard practice. This 2005 standard practice was replaced with an updated standard, the E1527-13, by ASTM International, a widely recognized standards development organization. Specifically, EPA is amending the "All Appropriate Inquiries Rule" to remove the reference to ASTM International's E1527-05 "Standard Practice for Environmental Site Assessments: Phase I Environmental Site Assessment Process."