Which standard corresponds to the Phase II Environmental Site Assessment?

The Phase II Environmental Site Assessment is primarily guided by ASTM E1903. This standard provides the necessary framework for evaluating the environmental conditions of a property, particularly focusing on the results of initial investigations under Phase I assessments and determining if there is a need for further investigation into potential contaminations.

This phase typically involves the collection and analysis of soil, groundwater, and other samples to assess any potential hazards or pollutants present on the site. By following ASTM E1903, practitioners ensure that the assessment is thorough and adheres to best practices for environmental evaluation.

In contrast, ASTM E1527 pertains to the procedures for conducting Phase I Environmental Site Assessments, rather than the Phase II. The 40 CFR Standards relate to the Code of Federal Regulations regarding protection of the environment but do not specifically designate the procedures for Phase II assessments. The ASCE Guidelines provide general civil engineering practices and may not focus explicitly on environmental site assessments. Thus, ASTM E1903 is the correct and relevant standard for Phase II Environmental Site Assessments.