Training Exchange | In Situ Chemical Oxidation

Using in situ chemical oxidation (ISCO) to remediate groundwater contamination involves injecting oxidants directly into the source zone and downgradient plume. Contaminants potentially amenable to treatment by ISCO include benzene, toluene, ethylbenzene, and xylenes (BTEX); tetrachloroethylene (PCE); trichloroethylene (TCE); dichloroethylenes; vinyl chloride; methyl-tert-butyl-ether (MTBE), polyaromatic hydrocarbon (PAH) compounds, and many other organic contaminants. Commonly used oxidant chemicals include permanganate (sodium and potassium), hydrogen peroxide, and ozone. The oxidants react with contaminants, producing innocuous substances such as carbon dioxide, water, and inorganic chloride; however, the full spectrum of reaction intermediates and products is not yet fully understood for all contaminants.

This training familiarizes participants with ITRC's Technical and Regulatory Guidance for In Situ Chemical Oxidation of Contaminated Soil and Groundwater In Situ Chemical Oxidation (ISCO-1, 2001), including descriptions of various chemical oxidants, regulatory considerations, stakeholder concerns, case studies, and technical references--information to help understand, evaluate, and make informed decisions on ISCO proposals.