A Phase I Site Assessment is used primarily to investigate commercial real estate for environmental conditions.  The American Society for Testing and Materials (ASTM) International provides a Standard Practice for environmental professionals undertaking a Phase I Site Assessment.  Last fall, ASTM International published a revised version of the Standard Practice for Environmental Site Assessments: Phase I Environmental Site Assessment Process or “ASTM E1527-13.”  
Continue Reading USEPA to Phase Out Use of Older Standard Practice for Site Assessments