Environmental Services

Phase I Environmental Site Assessments

The purpose of a Phase I ESA is to identify and assess characteristics of sites that are of environmental concern.  Environmental concerns include aspects that could lead to liability in the event of ownership, that have a potential to significantly impact property value, and that could impact the present or future use of the site.   A Phase I ESA typically involves the following steps: 
  • Historical/Records Review - obtain and review aerial photographs, city directories, and standard reference maps that will help identify recognized environmental conditions in connection with both past and present use of the property. 
  • Site Reconnaissance - an examination of the property for visible indicators of potential environmental conditions. 
  • Individual Interviews - interviews with individuals familiar with the site and adjacent properties provide information regarding condition and uses of the property. 
  • Agency Record Searches - thorough review of government agency archives for environmental permits and regulatory action on both the site and adjacent properties. 
  • Report - comprehensive documentation of acquired information, sources, conclusions and recommendations based on ASTM 1527-97 format for Phase I ESA’s.  
  • Client Meeting - a face-to-face meeting to discuss and clarify key project findings and recommendations.


Phase II Environmental Site Assessments

When the findings of the Phase I ESA suggest potential environmental contamination on the property, a Phase II ESA is frequently recommended.  The purpose of the Phase II ESA is to obtain definitive evidence of contamination through sampling and testing to define contaminant concentrations and estimate remediation costs.  The following steps are typically involved:
  • Sampling -  samples of groundwater, soil, building materials, and stored waste are collected and analyzed for potentially hazardous environmental conditions. 
  • Testing - sample tests are performed to determine the existence of petroleum hydrocarbon contamination; the presence of volatile organic or heavy metal compounds; or toxic/hazardous waste characteristics. 
  • Surveys - comprehensive surveys of the site are performed to determine the presence, location, and estimated quantities of lead-based paint, asbestos, radon, and lead-in-water. 
  • Report - detailed report of the methodology, findings, conclusions, and recommendations. 
  • Client Meeting - a face-to-face meeting to discuss and clarify key project findings and recommendations.