STAR as an Innovative Alternative for Source Zone Remediation
Numerous field evaluations and applications over the past several years inform the design of STAR systems and our understanding of the technology’s operational limits. The technology is robust and applicable to a wide range of contaminants and range of hydrogeologic settings, but is best suited to high concentration source zones of low volatility compounds such as coal tar, creosotes, or high molecular weight petroleum hydrocarbons (heavy hydrocarbons). Additionally, STAR has been demonstrated to treat higher volatility compounds such as diesel range organics (DRO) or gasoline range organics (GRO), typically with the addition of a low-volatility surrogate fuel such as vegetable oil.
This presentation will provide an overview of the technology, factors affecting site-specific applicability including insight into the importance of quality site investigation data and a rigorous Conceptual Site Model (CSM), pre-design evaluations that may be performed, and a demonstration of how the technology is implemented for successful site remediation. While STAR may be applied for a range of site conditions, emphasis will be on utilizing the technology for source zone remediation .