Providing sustainable, effective remedial solutions for complex soil and groundwater contamination since 1993

Nature-based solutions in even the most challenging conditions.

TreeWell® technology provides solutions

Our patented TreeWell® Systems offer a cost-effective, nature-based, sustainable remediation alternative that can provide hydraulic control and contaminant mass reduction. Our technology allows access to deep groundwater and bedrock aquifers, and our methods promote in-situ microbial degradation of subsurface contaminants.

Our TreeWell systems can treat groundwater well beyond the shallow depths reached by traditional phytoremediation methods. With our systems, we have remediated groundwater at over 100 ft bgs.
Our systems are engineered to direct root growth and enable trees to uptake water from targeted lithologic intervals, including those beneath zones of clean groundwater.
With our patented technologies and methods, we have developed in situ, plant-based solutions effective even in circumstances generally considered phytotoxic. We have planted trees in a DNAPL area with concentrations greater than 65-ppm.
Our systems have been installed to provide hydraulic capture, effectively replacing aging and inefficient mechanical pump and treat systems. We have success achieving remedial objectives and receiving regulatory closure.

**How do TreeWell® units work?**

Trees operate as a pump—contaminated groundwater is drawn upward towards roots, while roots are encouraged to grow downward towards contaminated groundwater
Root_Sleeve™ liner acts as well casing to exclude non-targeted surface water and encourage tree pumping of targeted depth
Aeration tubing is installed to provide oxygen to root zone
TreeWell unit acts as a bioreactor—microbes degrade contaminants before having contact with roots
Residual contaminants treated within the tree and/or photo-oxidized within the atmosphere

Contaminants successfully treated by TreeWell® Systems

• Volatile Organic Compounds (VOCs) • Semi-Volatile Organic Compounds (SVOCs) including 1,4-dioxane • Pesticides • Agricultural inorganics such as nitrate & ammonium • Tritium • Solubilized metals: lead, arsenic, boron, zinc, cadmium

*Applied Natural Sciences is currently working on multiple pilot-scale TreeWell projects for the remediation of PFAS-impacted groundwater.

Additional Resources

**Past PHYTO_INTEGRATED® Remediation Project Overview**

Conventional Phytoremediation vs. TreeWell-based System

Read about Past Projects.

What do you want to know more about?

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Phytotoxic • Site Closure • Fractured Bedrock •Cost Savings • Challenging Geology • Pump and Treat • 1,4-Dioxane • CCR • No Further Action • Deep Groundwater • Hydraulic Control • VOCs • Wetlands • Multiple Subsurface Horizons • Greenhouse Studies • Red Mud • Revegetation • Straw TreeWell Unit •