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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June 22, 2026
Partner has named Frederick Ellington, AIA, LEED AP, as Technical Director in its Construction Services division. With 30+ years of experience, he strengthens the firm's construction risk management, due diligence, and project advisory capabilities for commercial real estate clients.

May 27, 2026
Capital planning in commercial real estate has entered a new phase. In addition to traditional lifecycle replacements, managers now face a growing set of capital needs driven by energy ordinances, decarbonization goals, and climate risk. These drivers are no longer peripheral considerations; they are central to how capital plans are developed, prioritized, and executed.

June 05, 2026
Partner Property Consultants, the European subsidiary of Partner Engineering & Science, Inc. (Partner ESI), announces that Antoine Yeprem joined the company in June 2026 as Senior Consultant, Real Estate Due Diligence, in Germany.





