Service:
Cutoff & Containment Walls Built with One-Pass Precision
L4H Trenching constructs high-performance cutoff and containment walls using our proprietary one-pass trenching system. Designed for work under the water table, our process eliminates dewatering and contaminated soil handling while creating continuous, low-permeability barriers that protect groundwater and meet strict regulatory standards.
What Sets Our Process Apart
Our single-pass system combines excavation, soil removal, and backfilling in one continuous operation. This eliminates the need for multiple machines, reduces project timelines, and ensures consistent quality throughout the wall. By completing installations in one pass, we minimize site disruption, lower costs, and keep sensitive environments intact.
Engineered for Complex Sites
Our technology performs exceptionally well in tight, active, or confined locations and can operate effectively below the static water table. This allows L4H to handle projects that would otherwise require complex groundwater management or extensive site preparation
Materials and Methods
Each containment wall is designed using the most suitable material for the project’s conditions:
Soil-Bentonite: Ideal for low-permeability groundwater barriers
Soil-Cement: Provides added structural integrity
Reactive Media: Enables in-situ contaminant treatment
This flexibility allows us to meet unique geotechnical and regulatory requirements for every site
Common Applications
Our one-pass cutoff and containment walls are used for:
Landfill containment
Dam seepage and reservoir control
Industrial site remediation
Mining leachate and tailings control
Slope stabilization and groundwater interception
Results That Save Time and Cost
Because our machine cuts, removes soil, and installs material simultaneously, L4H Trenching reduces total project duration, labor hours, and equipment use while maintaining precision and safety
Start Your Project with L4H
From site assessment to final installation, L4H Trenching provides end-to-end support that helps clients achieve regulatory approval and lasting results. Contact us today to discuss your cutoff or containment wall project.