The New Phase I ESA Standard

Does your environmental consulting company use the latest standard for Phase I ESA (Environmental Site Assessment) reports? If not, it could put your property deal or loan at risk and expose you to unnecessary environmental hazards. Mill Creek Environmental is one of Georgia’s top environmental firms. We have completed thousands of Phase I Environmental Site Assessment (Phase I ESA) reports in our years of experience and we know the importance of staying up to date with the latest standards and regulations.

What is the New Phase I ESA Standard?

In November 2021, ASTM International introduced a new standard called ASTM E1527-21 for Phase I ESAs. This replaced the older standard, ASTM E1527-13, and meets the USEPA’s (U.S. Environmental Protection Agency) “All Appropriate Inquiries” (AAI) Rule. The EPA approved the new standard in February 2023 and allowed a one-year transition period for switching from the old standard to the new one. Starting February 13, 2024, all Phase I ESA reports must follow the ASTM E1527-21 standard to comply with the AAI rule.

What’s Changed in the New Phase 1 Standard?

While the changes in the new standard might seem minor, they can significantly impact the results and content of a Phase I ESA report. The key updates include:

  • Updated Definitions: New definitions for Recognized Environmental Conditions (RECs), Historical Recognized Environmental Conditions (HRECs), and Controlled Recognized Environmental Conditions (CRECs).
  • Revised Terms: Changes to terms like “significant data gaps” and “level of inquiry” with clearer guidelines on the validity of Phase I ESA reports and the required effort and documentation.
  • Historical Research and Records Review: Improved methods for conducting historical research and reviewing environmental agency records, including mandatory data sources.
  • Site Visits: Clearer guidelines on how to conduct site visits, detailing which activities, property uses, and site conditions should be noted.
  • Emerging Contaminants: Inclusion of “emerging contaminants,” which are not yet classified as hazardous by Federal law but may be in the future and should be reported in a Phase I ESA.

What Standard Does Mill Creek Environmental Use?

Mill Creek Environmental has been using the new ASTM E1527-21 standard for Phase I ESA reports since the EPA approved it in February 2023. This ensures that our clients and their lenders are compliant with the latest regulations, providing peace of mind.

Our Phase 1 Environmental Site Assessments are performed by experienced staff, and all are directed by environmental professionals with a minimum of 10-years’ experience. Our projects are cost-effective, and we have the available staff and experience to complete multi-site portfolios with very short due dates.

We specialize in fast completion, quality assessments, and competitive cost while meeting the requirements for the ASTM E1527-21 Standards and the All Appropriate Inquiry Rule (AAI) 40 CFR Part 312.

So, if you want Phase 1 ESA experts that are up to date with all the latest regulations, contact Mill Creek Environmental Today.

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