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Environmental Remediation of Liabilities.

Once the existence is detected and the type, extent, level and nature of the contamination are characterized, the next actions to be taken are those of Environmental Remediation. The correct selection of the techniques and technologies to be applied is crucial for the success of the project.

The design of the Environmental Remediation Project considers the type of contamination, the hydro-geological and physical-chemical conditions of the site, the nature of the existing operation, physical facilities, environmental assets to be protected, the remediation goals established, and the technical and economic feasibility of the project.

SGW Services has ample experience in the application of all the environmental remediation techniques currently available. According to the characteristics of each case, one or more or a combination of remediation techniques may be applied:

  • Pump & Treat
  • Multiphase Extraction (MPE)
  • Recovery of Free Phase
  • Monitored Natural Attenuation
  • Removal and Destination of Soils and Waste
  • Extraction of Soil Vapors (SVE)
  • Air Sparging
  • In-Situ Chemical Oxidation (ISCO)
  • In-Situ Chemical Reduction (ISCR)
  • Hydraulic Barriers
  • Physical Barriers
  • Reactive Barriers
  • Bioremediation
  • Coverage of Waste
  • Bio-sparging
  • Bio-venting
  • Reductive De-chlorination
  • Geotechnical Encapsulation
  • Soil Washing
  • Immobilization of Heavy Metals
  • Phytoremediation

 

SGW Services has a specialized team with vast experience in remediation projects for the construction, implantation, operation, maintenance and monitoring of the systems, which guarantees meeting the goals and results with high efficiency.

In all the projects, irrespective of size and complexity, the economical, technical, environmental, legal and social aspects and the vision of sustainability are considered, without compromising production capacity and economic growth. These assumptions, together with the high rate of success in reaching the objectives established, have made SGW Services a reference in quality for clients, collaborators and environmental agencies in the entire country.

Environmental Monitoring

During the entire Environmental Remediation process, irrespective of the techniques applied, monitoring of the physical-chemical parameters of the soil, groundwater and surface water is necessary.

Environmental Monitoring is carried out by means of collecting samples of materials such as soil, waste, ambient air, groundwater and surface water, free phase products, sensitive material or bio-indicator of the site and remediation products. The objective of the results obtained is to indicate and quantify the presence of contaminants, attest the efficiency and performance of the remediation system implanted and the reduction or not of the persistent concentrations.

Once the remediation goals are attained (CMA – Maximum Acceptable Concentrations or SSTL – Site Specific Target Level), a representative monitoring cycle is necessary in order to ascertain with certainty that the site is remedied and the proceeding can be closed with the environmental agency.

SGW Services is qualified to collect these samples according to the technical standards in force, which guarantees the reliability of the results of the physical-chemical analyses performed by specialized laboratories accredited by the competent bodies, as well as to analyze the results and report eventual environmental measures necessary, or recommend closing the case.