ASTM E1527 is a standard for Environmental Site Assessments (ESA) in the United States. It sets the standards for conducting Phase I environmental site assessments to identify potential environmental liabilities associated with a property.
There have been several updates to the standard over the years, the latest of which is ASTM E1527-21. Some of the key changes in this version include:
- Definition of “Control”: The definition of “control” has been updated to align with the definition used in the Resource Conservation and Recovery Act (RCRA) and other regulations.
- Definition of “Historical Recognized Environmental Condition”: The definition of “historical recognized environmental condition” has been updated to clarify when a site may qualify as such.
- Definition of “Recognized Environmental Condition”: The definition of “recognized environmental condition” has been updated to clarify when a site may qualify as such.
- Updates to the Scope of Work: The scope of work for a Phase I ESA has been updated to include new topics such as vapor intrusion, emerging contaminants, and climate change.
- Update to the Requirements for Report Content: The requirements for the content of a Phase I ESA report have been updated to include new topics such as vapor intrusion and emerging contaminants.
Overall, these changes aim to improve the accuracy and completeness of Phase I ESAs and help ensure that they provide a comprehensive assessment of potential environmental liabilities associated with a property. Additional information can be found at ASTM: https://www.astm.org/e1527-21.html