Phase I ESA:

A Phase I Environmental Site Assessment involves an evaluation of past and present “uses” of a property, through research of government databases, historical sources and interviews of those familiar with the site, to determine the potential for the “uses” to adversely impact the site.  A Phase I investigation does not involve intrusive investigation of a site.

Phase I Environmental Site Assessments are conducted in accordance with the All Appropriate Inquiry standard published in 40 CFR Part 312, published November 1, 2005 and the American Society of Testing and Materials ASTM designation E1527-05, Standard Practice for Environmental Site Assessments: Phase I Environmental Site Assessment Process, (released November 21, 2005) to identify recognized environmental conditions (RECs) on properties. 

Phase II ESA:

Phase II Environmental Site Assessments as defined by American Society of Testing and Materials ASTM designation E1903-97(2002) is conducted to evaluate the recognized environmental conditions identified in the Phase I ESA.  See Site Characterization.

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