The ASTM E1527-13 was phased out after February 13, 2024, and was updated to the new ASTM E1527-21 Standard. This update introduces key changes to improve Phase I Environmental Site Assessments’ clarity, consistency, and comprehensiveness (ESAs). Here’s a brief overview of the most important updates: Clarifications and Updates Definitions: Improved definitions for Recognized Environmental Condition (REC), Controlled Recognized Environmental Condition (CREC), and Historical Recognized Environmental Condition (HREC). Significant Data Gap: Clear guidance on identifying and addressing significant data gaps. Historical Research Scope: Historical research must now trace back to the property’s first developed use or to 1940, whichever is earlier. Read More »