Beyond what is covered in Tier 1 assessments, Tier 2 assessments often involve which additional element?

Tier 2 assessments are designed to provide a more detailed evaluation compared to Tier 1 assessments. One of the key characteristics of Tier 2 assessments is the inclusion of comprehensive sampling and analysis. This involves a more thorough examination of environmental conditions and potential contaminant levels.

In Tier 2 assessments, the data collected is analyzed in depth to identify specific contaminants, their sources, and their impact on the environment. This meticulous approach enables regulators and organizations to assess risks accurately, make informed decisions about remediation strategies, and ensure compliance with environmental regulations. Comprehensive sampling ensures that all relevant environmental media—such as soil, water, and air—are sufficiently analyzed for any contaminants that could pose a risk to human health or the environment.

The focus on detailed sampling and analysis is what distinguishes Tier 2 assessments, reflecting a deeper dive into the environmental issues identified in the preliminary Tier 1 assessments. This enables the identification of risk levels and guides the subsequent steps in the environmental assessment process.