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Phase II Subsurface Site Investigations & Site Remediation Services
A Phase II Subsurface Site Investigation, commonly referred to as a Phase II, is often conducted after the completion of a Phase I Environmental Site Assessment (ESA) to confirm the environmental liabilities or suspect findings identified during the Phase I ESA process. Phase II Subsurface Site Investigations aid in significant business and risk management decisions associated with commercial real estate transactions, lending, and re-financing. Phase II Subsurface Site Investigations confirm whether environmental impact is present on a property through the sampling and laboratory analysis of soil and/or groundwater.
A Phase II Subsurface Site Investigation includes, but is not limited to, the following tasks:
- Evaluation of geologic conditions of the property.
- Collection of soil samples on the property typically through utilizing drilling equipment.
- May involve the installation of monitoring wells for the collection of groundwater samples.
- Analysis of soil and/or groundwater samples for contaminant parameters. The contaminant parameters selected for analysis are based on site specific information and/or the suspect environmental findings obtained from the Phase I Environmental Site Assessment.
- Interpretation of analytical results in comparison to applicable cleanup objectives adopted by the Illinois Environmental Protection Agency (IEPA) listed under the Tiered Approach to Corrective Action Objectives (TACO).
- Preparation of a written report detailing Phase II activities, laboratory analytical results, and interpretation of analytical results for managing potential for risk at a property.
Once environmental findings are confirmed through the Phase II Subsurface Investigation, proceeding steps include establishing the extent of conditions and evaluating an appropriate remedial method. This remediation process may be conducted in conjunction with environmental regulatory programs, such as the IEPA’s Site Remediation Program (SRP). The SRP is an environmental cleanup program in which the IEPA provides oversight of investigations and cleanup activities. Once the full extent of subsurface contamination on a property is defined and remediated to conditions considered acceptable to the IEPA, the IEPA will issue what is referred to as a No Further Remediation Letter (NFR). The NFR letter signifies that remedial objectives and regulatory requirements have been satisfied.