Environmental Site Assessments
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Phase I Environmental Site Assessment (ESA)
The collected information is compiled into a detailed report in general conformance with ASTM E1527-21, Standard Practice for Environmental Site Assessments, and 40 CFR Part 312, All Appropriate Inquiries. The conclusions of a Phase I ESA include whether a Phase II ESA is recommended or not. A Phase I ESA does not include any sampling or laboratory analysis activities. These activities are conducted if recommended during the Phase II ESA.
A Phase I ESA is usually performed by a party considering a purchase of real estate since the best time to determine if an environmental issue is present is before you buy. A property owner may also wish to conduct a Phase I ESA of their land to begin resolving environmental issues at their own pace and avoiding future surprises.
Phase II Environmental Site Assessment (ESA)
The scope of work typically focuses on the areas most likely to exhibit detectable contaminants and suspected releases. Additional inspections outside the scope of a Phase II ESA may include surveys for asbestos, lead paint, or a wetlands assessment based on knowledge of property use and history.
If no significant contamination is detected in the Phase II ESA, often no further work is required. If contamination is found at levels of concern, further site characterization to delineate the extent of the impacts and assess the level of risk may be completed to determine if an environmental cleanup is recommended.
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