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Our staff has over 50 years of experience with the design, installation and operation of a wide variety of treatment systems. Embarking on the installation of a treatment system is not to be taken lightly because of the cost, time and property disruption that can result. For that reason, we always evaluate other options first. Once it is clear that a treatment system is needed, the proper remedial options must be selected and configured to meet any unique features of the property, the sensitivity of the location and the goals of the client.

LEI is constantly reviewing emerging technologies that can provide timely, cost-effective solutions for our clients. Below is a list of remedial techniques most commonly employed by LEI:

  • Bio-RemOX SM: LEI's patent pending, revolutionary remedial technique combining Chemical Oxidation with Bioremediation. Bio-RemOX SM is performed by self contained and self sufficient mobile injection units.
  • Chemical Oxidation: The addition of an oxidant (e.g. hydrogen peroxide, Fenton's Reagent, permanganate, etc.) in a controlled manner, via a strategically designed series of injection wells
  • Bioremediation: The addition of nutrients or other materials to stimulate naturally occurring bio-remedial processes in subsurface soil and groundwater
  • Soil Vapor Extraction: Connecting an extraction blower to a series of slotted, horizontal or vertical pipes to remove contaminants primarily from subsurface soil above the groundwater table
  • Air Sparging: Introducing pressurized air to groundwater at low flow rates to encourage the volatilization of dissolved phased contaminants. This technique is frequently employed in conjunction with soil vapor extraction and/or bioremediation.
  • Dual Phase Extraction: A modified version of soil vapor extraction that utilizes a high vacuum capable of extracting both vapors and groundwater from the same well point. This technique is effective at sites that exhibit free phase contaminants or NAPL (Non Aqueous Phase Liquid).
  • Soil Excavation: Excavation and proper off-site disposal or recycling of contaminated soils
  • Groundwater Recovery: Depression of groundwater via recovery trenches or wells to contain a groundwater contaminant plume
  • Mold Remediation: Various mold removal processes to address viable and non-viable impact identified in various media (i.e. non-porous, semi-porous and porous materials, HVAC systems and indoor air)
  • Natural Attenuation: Relying on naturally occurring bioremedial processes to further improve site conditions

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