The Environmental Protection Agency lays out and enforces the requirements for All Appropriate Inquiry and CERCLA liability. However, the industry standard for conducting and reporting environmental due diligence is the ASTM E1527 standard (the Standard Practice for Environmental Site Assessments: Phase 1 Environmental Site Assessment Process), which was designed by ASTM International specifically to meet the AAI requirements. First released in 1993, the standard has been revised in 1997, 2000, 2005, and most recently in 2013.
The current standard for the Phase 1 Environmental Site Assessment, ASTM E1527-13, is up for renewal. This has been a known likelihood over the course of 2018, as the committee has met on numerous occasions and suggested revisions have been put up for consideration. The deadline for finalizing a new standard is 2021, when the current standard sunsets, however the hope is to pass it by late 2019.
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