Which standard updated the E1903-97 for Phase II ESA?

The standard that updated E1903-97 for Phase II Environmental Site Assessment (ESA) is E1903-11. This revision reflects advancements in environmental assessment practices and provides a framework that incorporates updated methodologies and practices used in Phase II ESAs.

The Phase II ESA is crucial for evaluating potential contamination at a site based on the findings of a Phase I ESA. The updates made in E1903-11 include enhanced investigation procedures, risk assessment strategies, and more detailed guidance on sampling and analysis, ensuring that these assessments are thorough and aligned with current regulatory standards and scientific understanding.

Understanding the significance of these revisions is essential for environmental professionals who conduct site assessments and manage environmental risks, as it directly impacts the effectiveness of their evaluations and the protection of human health and the environment.