In conjunction with the expertise in the procurement, installation and activation of a single-phase (vapor or liquid) extraction systems, ICS has installed many dual phase (vapor/liquid-phase) extraction systems. Similar activities such as trenching, pipe installation and welding (HDPE certified plumbers), system installation and treatment compound construction carry into the work ICS has performed for its client with dual-phase systems.

Dual phase systems, similar to vapor extraction, involve the physical stripping of volatile vapor and liquid contaminants from the soil using negative (vacuum) pressure. The resulting vapor contaminated vapor stream is manifolded through treatment systems, which may include granular activated carbon (GAC), thermal or catalytic oxidizers, wet and dry scrubbers, and internal combustion engines. The liquid contaminate is typically separated and Vapor extraction can be performed in situ using extraction wells, or ex situ through vented stockpiles.

The process can often be enhanced by injecting heated air into the soil to enhance volatilization of hydrocarbons. Vapor extraction has the greatest impact on volatile high-end hydrocarbons such as gasoline, as well as TCE, PCE and various other chlorinated solvents. It can also be used in conjunction with groundwater pump and treat systems to enhance the rate of groundwater extraction and volatilization of chemicals from the vadose and saturated zones.