Concurrent treatment of source area saturated and unsaturated zones usually requires the integration of chemical oxidation with other remedial technologies that target unsaturated zone contamination (., soil vapor extraction). Frequently, soil vapor extraction, which is used to treat the unsaturated zone, is included as a component of chemical oxidation remedial solutions even if there is no specific need to treat unsaturated soils in the source area. Use of soil vapor extraction in conjunction with chemical oxidation can help alleviate safety issues associated with controlling and recovering off-gas containing volatile organic carbons (VOCs), oxygen, oxidants and other reaction byproducts that can be generated by various chemical oxidants
