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Phase I Environmental Site Assessments

Active Environmental conducts Phase I Environmental Site Assessments (ESA) using the ASTM Standard E-1527: (Standard Practice of Environmental Site Assessments:  Phase I Environmental Site Assessment Process) and the U.S. Environmental Protection Agency (USEPA) All Appropriate Inquiry (AAI) to assist our clients in due diligence assessments of property transactions or development projects. 

Phase I ESA services Include:

  • Review geologic and hydrogeologic information available from local/state environmental offices, State Geological Survey, Department of Natural Resources (DNR), and the County Soil and Water Conservation District (SWCD);
  • Review past occupant information provided by the current owner, Environmental Data Resources (EDR), and available historical information from City/County Recorders and Assessors offices;
  • Review historical USGS Topographic Maps, Sanborn Fire Insurance Maps, city directories, and , aerial photographs from EDR and state/local offices; 

 Review EDR database information from Federal and State regulatory records and proprietary records for current of previous environmental activities related to the site; 

  • Contact state and local governmental agencies, current and past property owners (if available), county health departments, and local fire jurisdictions to determine previous contamination on the property;
  • Conduct a site visit to determine potential onsite/offsite sources of contamination considered an environmental concern for the subject property, including: Underground Storage Tanks systems (USTs), Aboveground Storage Tanks (ASTs), electrical transformers and other potential sources of polychlorinated biphenyls (PCBs), and disposal practices of the property and adjacent properties of non-hazardous and hazardous materials.
  • Services that are provided at an additional cost include: reviews for property boundaries; airborne pathogens (mold); spores, fungi, or other biologic al pathogens; asbestos; lead-based paint; radon; formaldehyde; wetlands; lead in drinking water; methane gas; or electromagnetic fields (EMF).  These services are performed as part of the Phase I ESA only if requested by the client.

The client will receive a verbal report followed by a final bound copy of the Phase I ESA report.  The recognition of an environmental concern is discussed in the conclusions followed by recommendations.