Stakeholders at a TCE-impacted site required conclusive evidence of TCE degradation and suspected that multiple sources of TCE may exist at the site.
Site managers asked “Is there evidence of TCE dechlorination at the site?” The answer was yes. CSIA conclusively demonstrated that TCE degradation had occurred at several locations at the site.
The site managers also asked “Is there evidence of multiple sources of TCE at the site?” The answer was yes. CSIA demonstrated a potential second source of TCE at the site.
These observations increased stakeholder confidence in the current treatment strategy and avoided a premature injection of additional electron donor. The identification of a potential second TCE source refined the site conceptual model resulting in more efficient treatment and the potential for identification of a second responsible party.
