Phases of Investigation
Generally, ESAs are performed in phases, with a Phase I assessment consisting of a nonintrusive and qualitative investigation, which takes into consideration current and historical uses of the site and whether any conditions exist that indicate a release of hazardous material, such as petroleum or chemicals.
If the Phase I ESA determines a potential environmental risk is associated with the property, a Phase II investigation is recommended. Phase II ESAs involve analytical testing of:
- Soil and water (depending on contamination source)
- Building materials (asbestos or lead-based paint)
- Underground storage tanks and piping (tank integrity testing)
- Or electrical transformers (PCBs)
CGRS has extensive experience in generating Work Plans, Quality Assurance Project Plans (QAPP), and Sampling and Analysis Plans (SAP), all of which ensure the proper analytical data are generated for each project, and that all sampling and handling are done in accordance with written protocols.