All Phase I Environmental Site Assessments comply with current ASTM E1527-13 standards and All Appropriate Inquiry (AAI).

The ESA will include:

  • Investigations of past land-use history and current use, including title history and municipal documentation.
  • Federal and State Environmental Database reports and site mapping.
  • Review of Sanborn fire insurance maps (where available).
  • Review aerial photographs and topographic maps of the site and surrounding areas.
  • Explanation of data gaps.
  • Non-scope issues (asbestos, lead-based paint, radon, mold, etc.) are documented.
  • On-site reconnaissance of the site and surrounding areas for recognized environmental conditions (RECs).
  • Interviews with the property owner(s), or property owner(s') representative.
  • Preparation of a final report with findings, opinions, conclusions, and recommendations.

Phase I Assessment

Recognized Environmental Conditions (RECs) are defined by ASTM E1527-13 as the presence or likely presence of any hazardous substance or petroleum products on a PROPERTY under conditions that indicate an existing release, a past release, or a material threat of a release of any hazardous substances or petroleum products into structures on the PROPERTY or into the ground, groundwater, or surface water of the PROPERTY.


The term includes hazardous substances or petroleum products even under conditions in compliance with laws. The term is not intended to include “de minimis” conditions that generally do not present a threat to human health or the environment and that generally would not be subject to enforcement action if brought to the attention of appropriate governmental agencies. Conditions determined to be “de minimis” are not “recognized environmental conditions.”