Generally, a Phase III Environmental Sites Assessment (ESA) is the term used to describe the contaminated site remediation phase of an ESA. This includes both the planning and the execution of a remediation of an impacted site. A Phase III ESA is performed when a release of polluting substances has been detected during a Phase II ESA, and involves further testing with the goal of determining the extent and magnitude of the release. Once the extent and magnitude of a release is established, the data is compared to applicable environmental laws and regulatory criteria and a determination is made as to whether remediation of the impacted site is feasible.

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Our Phase III services include but are not limited to.

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• Identifying the extent of environmental contaminants found during the Phase II Environmental Site Assessment process.

• Determining the amount of soil and groundwater impacted by environmental contaminants.

• Completing a Site Notification Report to notify regulatory bodies of site contamination.

• Develop a Remedial Action Plan (RAP) to remove environmental contaminants from the property.

• Assessing cost options available and timelines of remediation.

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Purpose of a Phase III ESA

During a Phase II Environmental Site Assessment, intrusive testing is performed on a property to determine if environmental contaminants are present on a property. If no contaminants are found, a Phase III Assessment is not necessary. However, if contaminants are found, a Phase III Assessment takes the information from a Phase II and determines the extent of contamination of the property. It is a much more detailed investigation of the property, and is necessary to uncover additional information before remediation work can take place.

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A Phase III ESA should allow parties involved to develop a plan of remediation, which needs to have the approval of local, state and federal environmental agencies. It will also detail a full scope of options for all parties and time and costs involved with cleanup.

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Environmental engineers typically will conduct additional testing to determine the extent of pollution on the property. Common tests may include:

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• Groundwater testing

• Subsurface soil assessment

• Sediment testing

• Assessing pathways of contaminants in soil and groundwater

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The environmental consultants and engineers at CTS Group are experienced at conducting Phase III Assessments, and are knowledgeable of the steps and requirements necessary in conducting the process. To learn how we can help plan your needed Phase III ESA, please contact us.