724-335-7273 | info@geo-solutions.com HOME SERVICES SOIL MIXING BARRIER WALLS BARRIER WALLS Vertical barrier or cutoff walls are used to control the horizontal spread of contaminants in groundwater or simply the movement of the groundwater itself. These barrier walls can be installed using a number of construction methods, including slurry trenching, soil mixing or jet grouting. Independent of the construction approach, cutoff walls are typically designed to have a hydraulic conductivity or permeability that is at least one order of magnitude less than the native or existing (fill) soils. Vertical barrier walls can be used to directly contain or cutoff contaminated groundwater by surrounding the impacted groundwater plume or can be used to control the flow of groundwater to prevent contact. In some cases, such as permeable reactive barriers (PRBs) or collection trenches, the vertical barrier wall is designed to have a higher hydraulic conductivity (permeability) to serve as a preferential flow path that can be used to control contaminant migration. In the case of PRBs, the groundwater is actually treated as it flows through the barrier. In the case of collection trenches, the groundwater is generally collected and passively or actively moved to a treatment system. Slurry Walls Soil Mixing Steam Enhanced Soil Mixing Barrier Walls Excavation/Structural Support Zero Valent Iron Geotechnical Excavator Mixing In-Situ Stabilization/Solidification In-Situ Chemical Oxidation In-Situ Chemical Reduction Rotary Tool Mixing Bio-Polymer Trenches Permeable Reactive Barriers Grouting Geo-Trencher Vibrated Beam Cutoff Walls BARRIER WALLS CASE STUDIES Greenfield, MA: Greenfield Remediation Project – Phase I Aiken, SC: Groundwater Barrier Extension at the F-Area Seepage Basin Sag Harbor, NY: Former Manufactured Gas Plant Site Irving, TX: Hunter Ferrell Landfill Metaline Falls, WA: Lehigh Cement Company CKD Lima, OH: Soil Mix Barrier Wall Jeffrey City, WY: McIntosh Pit Reclamation, Impoundment Sealing Project Louisville, MS: Slurry Wall Installation, American Creosote Works Superfund Site Louisville, MS: Deep Soil Mixing (DSM) Containment Wall Remediation, American Creosote Works © Copyright 2017-2020. All Rights Reserved. Corporate Headquarters: 1250 Fifth Avenue New Kensington, PA 15068 Phone: (724) 335-7273 Email: info@geo-solutions.com FOLLOW US Facebook Twitter Youtube Linkedin