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ASTM Issues Revised Phase I Environmental Assessment Standard

On November 6, 2013, ASTM International (ASTM) issued the long-awaited, revised version of the ASTM E1527: Standard Practice for Phase I Environmental Site Assessments: Phase I Site Assessment Process (Phase I Standard). The ASTM Phase I standard is used in most commercial property transactions to identify potential environmental contamination and as a means to establish an innocent landowner defense or take advantage of certain liability protections in accordance with the U.S. Environmental Protection Agency’s (EPA) All Appropriate Inquiries (AAI) Rule (Title 40 Code of Federal Regulations (CFR) Part 312). ASTM’s revisions to the Phase I standard clarify language where there was inconsistency in interpretation and strengthens the deliverable that is produced at the end of the Phase I process; however, the revisions do not change the current environmental assessment process.



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