Once the site characterization and risk assessment are completed, the remedial alternatives are weighed. Remediation means minimizing the risk imposed by the site on the environment to no risk condition. If natural attenuation is monitored it should be enhanced, if not, a remediation strategy is chosen; this it might be ex-situ or in-situ remediation methods for soil and ground water. There are more than six different in-situ methods, such as pump and treat, in-situ flushing, permeable reactive barriers, air-sparging, vapor extraction, and bioremediation. Comparison of compatibility and economy is conducted to justify the choice of a specific method for the site. We design the remediation system, supervise its installation, monitor it, detect the changes in the concentration of the contaminants, prepare the periodical progress reports and write the site final remediation report.
