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Environmental Due Diligence Boot Camp
 
 
Lesson 4:  Environmental Assessment - The Nuts and Bolts 
 
Part 2
 
 

 
 

Elements of a Phase 2 Environmental Site Assessment:

 

 
The scope of a Phase 2 Environmental Site Assessment (ESA) will vary substantially depending upon actual site conditions and what types of environmental hazards are potentially present on the property.  There are three (3) primary elements that may, depending upon site conditions, be included in a Phase 2 ESA:

 

  • Structural and Material Sampling
  • Environmental Sampling
  • Geophysical Survey
 
 

 Structural and Material Sampling:

 

The sampling protocol will depend on what types of hazardous substances are suspected of being present, where they are suspected of being located, and their expected form.

 

Examples: 

 

  • Lead-based paint:  laboratory analysis of paint chips or on-site XRF measurements 
  • Asbestos:  laboratory analysis of samples of material(s) suspected of containing asbestos 
  • Metal fume (Lead, Chromium, and other metals):  laboratory analysis of wipe samples from surfaces suspected of having been impacted  
  • PCBs:  laboratory analysis of wipe samples of oil film on or near suspect equipment, or samples of liquid acquired from suspect equipment 
  • Stains and deposits:  laboratory analysis of wipe, swab, scraping, or core samples  
  • Sludges; waste piles; unknown materials in containers, ponds, pits, or lagoons:  representative sample(s) of material(s) acquired for laboratory identification and/or hazardous waste characterization.
 
 
 
 
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POSTED:  22 December 2010