Phase 1 ESA

Real estate that is the subject of a Phase I Environmental Site Assessment, (ESA) undergoes a thorough and detailed investigation of the property's history.  

An ESA is a report prepared by AAI qualified Environmental Professionals for a real estate holding that identifies potential or existing environmental contamination liabilities. This environmental assessment is created in strict accordance to ASTM E 1527-05 and AAI, so that CERCLA liability protection requirements are met.

Although the scope of Phase I Assessments vary, the items listed below are common tasks completed in most Phase I ESAs:

  • Performance of an on-site visit to view present conditions (chemical spill residue, etc.); hazardous substances or petroleum products usage (presence of AST’s/ UST’s, storage of chemicals, etc.); and evaluate any likely environmentally hazardous site history.
  • Evaluation of neighboring properties that pose potential threats to the integrity of a site
  • Review of Federal, State, Local and Tribal Records out to distances specified by the ASTM 1528 and AAI Standards (ranging from 1/8 to 1 mile depending on the database)
  • Examine municipal or county planning files to check prior land usage and permits granted
  • Conduct file searches with public agencies having oversight relative to water quality and soil contamination.
  • Examine historic aerial photography of the locale as well as current USGS maps to scrutinize drainage patterns and topography.
  • Study chain-of-title for Environmental Liens and/or Activity and Land Use Limitations (AULs).

Several additional items which can be reviewed in a Phase I Environmental Site Assessment:

  • Asbestos Containing Building Materials (ACBM)
  • Lead-based Paint
  • Lead-contaminated Drinking Water
  • Mold
  • Radon
  • Wetlands
  • Mercury poisoning
  • Debris flow

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