What is an important consideration in a Phase I ESA?

In a Phase I Environmental Site Assessment (ESA), investigating past land use and environmental conditions is a crucial component. This process involves examining historical records, property ownership, and any prior industrial activities that could have impacted the site. By understanding the history of how the land has been used and identifying any past environmental hazards, assessors can evaluate the potential for contamination and determine the need for further investigation or remediation.

This focus on historical land use is essential because many environmental issues arise from previous activities that may not be immediately evident from current observations alone. The Phase I ESA aims to identify any recognized environmental conditions (RECs) based on this historical analysis which could pose risks to human health and the environment.