Author Archives: streamgeosciences

Drilling Methods for a Phase II ESA Project

Stream GeoSciences engineers and geologists are familiar with a host of drilling technologies and have relationships with some of the best drilling companies nationwide. We will choose the best drilling technology to economically meet the goals of the Phase II Environmental Site Assessment. Drilling methods used most often during Phase II ESAs include: Push ProbeContinue reading “Drilling Methods for a Phase II ESA Project”

What is a Phase II ESA and What’s Involved In Phase II ESA?

At the most basic level, a Phase II Limited Subsurface Investigation is an environmental site investigation that collects physical samples and subjects them to laboratory analysis specific to chemicals of concern (COCs) identified in the initial environmental site assessment. This data collection and analysis determines whether contaminants are present on site in sufficient concentration toContinue reading “What is a Phase II ESA and What’s Involved In Phase II ESA?”

The Change Could Do You Good: Adopting The 2021 Phase I ESA Standard

On March 14, the EPA officially accepted the new ASTM Standard E1527-21 for conducting Phase I Environmental Site Assessments (ESAs) as meeting the requirements of All Appropriate Inquiries (AAI). Since most commercial real estate (CRE) transactions require a Phase I ESA, the change is big news for anyone who buys, sells, invests in, or lends on CRE.Continue reading “The Change Could Do You Good: Adopting The 2021 Phase I ESA Standard”

Comprehensive Environmental Response, Compensation and Liability Act (CERCLA)

Also known as the “Superfund” law, the Comprehensive Environmental Response, Compensation and Liability Act (CERCLA) was enacted in 1980 and, among other things, gave the federal government the ability to respond to releases or threatened releases of hazardous substances, and to pursue polluters (“responsible parties”) or potential polluters (“potentially responsible parties”) for the cleanup of contaminated sites.
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