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RegenOx is a two-part chemical oxidant (a liquid and a solid) that destroy’s contaminants by means of robust chemical reactions, therefore distribution of RegenOx within the soil/groundwater matrix and contact with contaminants are of paramount importance.

RegenOx is delivered to the subsurface using two primary methods, direct-injection and fixed-delivery wells. Direct-injection is typically the optimal approach for shallow soils to ensure thorough distribution across heterogeneous soils. The relative cost of direct-injection allows for closer spacing than can be achieved with the use of permanent wells. Permanent or temporary injection wells can also be used and may be a suitable delivery method where multiple injections and higher volumes are required. RegenOx can also be used in excavation applications, soil mixing projects, bio-piles and trench configurations.

It is important to recognize that most applications of chemical oxidation including those using RegenOx® will require subsequent re-application, therefore it is prudent to keep this in mind when planning and configuring your injection scheme. Re-applications are necessary due to the fact that as the concentration of contaminant in groundwater decreases (or is chemically oxidized), the equilibrium between the aqueous phase and the sorbed-phase (or free-phase) will change, resulting in an increase in the rate of desorption of contaminant. As the oxidant is consumed and soil organics are oxidized, the concentration of contaminant in the aqueous phase can increase. Monitoring of the site after injection often shows an increase in the concentration of contaminant in the groundwater samples; however, if soil samples are also collected, they should show a corresponding decrease in mass of contaminant.

Note: All Installation Instructions are in .PDF format and can only be read using Adobe Acrobat® Reader®. Please click the icon below to download the most recent version.

RegenOx Direct-Push Injection Instructions (Step-by-Step Procedures)

RegenOx Fixed Well Application Instructions (Overview of Methods)

3-D Microemulsion is typically applied in high-volumes as an emulsified, micellar suspension (microemulsion). The material is delivered to the site as a concentrate and is then emulsified with on-site water forming an easy to handle and pump microemulsion with a relatively high hydrophilic/lipophilic balance (HLB). This high HLB allows dilute 3-D Microemulsion suspensions to be well distributed across contaminant plumes without high injection costs. 3-D Microemulsion applications can be configured in several different ways including: grids, barriers and excavations. The material itself can be applied to the subsurface through the use of direct-push injection, hollow-stem auger, existing wells or re-injection wells 3-D Microemulsion is usually applied throughout the entire vertical thickness of the determined treatment area. Once injected, the emulsified material moves out into the subsurface pore spaces forming micelles and moving via micellar transport, eventually coating most all available surfaces, these structures provide the added benefit of increased distribution via migration to areas of lower concentration. Over time the released soluble components of 3-D Microemulsion are distributed within the aquifer via the physical process of advection and the concentration driven forces of diffusion.

3-D Microemulsion Installation Instructions

ORC Advanced® can be applied to the subsurface in a number of different ways. The application method chosen is often determined by a range of factors including: depth to groundwater, soil type, location and extent of contaminants, remediation objectives, etc.

Typical installation of these controlled-release oxygen amendments involves mixing the ORC Advanced powder with water and forming an injectable slurry. The slurry is then injected into the subsurface using direct-push technology which can be an extremely cost-effective, efficient and clean way to deliver controlled-release oxygen into groundwater. Other common application types for ORC Advanced include: oxygen curtains (barriers), excavations, tank-pits, trenches and single or multi-well filter socks.

The following table contains ORC Advanced installation instructions for several different types of installations.

Note: All Installation Instructions are in .PDF format and can only be read using Adobe Acrobat® Reader®. Please click the icon below to download the most recent version.

Augered Hole, Back-Fill Method	Excavation Applications
Replaceable Filter-Sock Application	Direct-Injection Slurry Application
Geoprobe® Bore-Hole Back-Fill Method	Slurry Mixing