The last blogpost discussed the difference between an environmental audit and a Phase I Environmental Site Assessment (ESA). This post gives more details about a Phase I ESA, First of all, why “Phase I”? The answer is that there are also Phase II and Phase III ESAs. Phase I does not involve any sampling or site remediation. In a Phase II ESA, based on recommendations in the Phase I ESA report, soil, groundwater, and/or building materials are sampled and analyzed for various contaminants. In a Phase III ESA, based on recommendations in the Phase II ESA report, the site is remediated and follow-up monitoring is conducted. A Phase I ESA is conducted within the scope and limitations of the American Society for Testing and Materials’ (ASTM) designation E 1527-13. (EPA regulations also allow ASTM E 1527-05 to be used.) This assessment includes a review of federal and state environmental records and...
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