Phase I & Phase II Assessments

Phase I Environmental Site Assessment (ESA)
EWI resources include a group of environmental professionals dedicated to Phase I research and reporting. Phase I ESAs are performed in accordance with the EPA All Appropriate Inquiry (AAI) Rule and ASTM Standard E 1527-05. With an average Phase I volume of between 100 to 150 ESAs annually, EWI offers Phase I experience beyond comparison.

EWI Phase I Assessments typically include:

  • Historical records review and other land use research
  • Interviews with current and previous owners and occupants
  • Environmental database reviews
  • Identification of Recognized Environmental Conditions (RECs) or other conditions indicative of potential environmental impact

Phase II Assessment and Investigation
Phase I findings may warrant further evaluation to better characterize environmental conditions and potential risk. Such conditions are typically explored through Phase II investigations and sampling.

The scope of a Phase II assessment may vary significantly based on the Phase I findings and other project objectives. EWI maintains a dynamic Phase II philosophy that often entails the application of innovative sample collection and analysis methods. EWI has the flexibility to conduct Phase II assessments that range from limited, subsurface investigations to comprehensive groundwater studies. Related technical services include provided by EWI:

  • Direct-push (Geoprobe®) investigation
  • Field screening and analysis
  • Monitoring well installation and sampling
  • Soil vapor and geophysical surveys
Our field operations capabilities and in-house equipment allow EWI to support Phase II and site investigation projects from initial planning through sample collection in the field. This approach produces a higher level of quality control, with expedited and cost-effective results.

Related Projects

13 Bank Properties - Missouri, Kansas, and Nebraska
A regional bank client was presented with the opportunity to acquire additional branches in Missouri, Kansas and Nebraska. The bank contracted EWI to assess the environmental risk associated with purchasing 13 of these properties in an expedited manner. Read More
Major Retail Store Chain Property - Springfield, Missouri
EWI performed an initial Phase I Environmental Site Assessment including Asbestos and Lead-Based Paint Inspections. The Phase I ESA report included additional scope of work considerations including Section 106 Review, wetlands and surface water considerations, environmental regulatory compliance and potential environmental impacts and implications associated with property development / construction. Read More