Guidance and Orientation for the Selection of Technologies

Slideshow

Targeted contamination cleanup

NRC researchers conducted an in situ aerobic biostimulation trial in Goose Bay, Labrador, to clean up petroleum hydrocarbon contaminated groundwater. Because this system relies on solar energy alone, it can be used in remote or Far North locations.

Cleaning up the Arctic

This operator is digging a trench at CFS Alert to collect soil samples for chemical analysis. The results will then be used to map the location of contaminated soil.

Phytoremediation

Phytoremediation is used to revegetate the oil sands with pioneer plants that are able to grow under harsh conditions and start the process of succession leading to natural reforestation. Here, alder trees and shrubs form a symbiotic relationship with a soil bacterium, Frankia, that can convert atmospheric nitrogen into nitrate, an essential plant nutrient.

Contaminant Information

Light hydrocarbons such as benzene, toluene, ethylbenzene and xylene, found in gasoline and jet fuel, are less dense than water. As seen in this image, such compounds at high concentrations will form free phase which floats on the surface of groundwater.

GOST is a tool designed to help contaminated sites managers better manage their sites. GOST contains a Technology Selection Tool as well as practical information on technology implementation and site characterization.

The GOST Technology Selection Tool is a questionnaire where users enter site specific parameters and a list of remediation technologies appropriate for their site is returned. Users can then review the Technology Fact Sheets to find more detailed information on the selected technologies or using GOST generated tables, compare key information between technologies. The technology fact sheets also provide a list of recommended laboratory analyses and field trials for Phase II and III assessments to assist in determining whether a technology is appropriate for their site.

Another feature of GOST is the Contaminant Fact Sheets. For each compound, important chemical properties are listed, as well as a description of how it will react in the environment, the principal sources of the contaminant and a brief summary of health and safety considerations.

Under Useful Information, you will find estismated costs of laboratory analyses glossary of terms used in the site and links to relevant websites.