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What is in-situ chemical oxidation (ISCO)?

In-situ chemical oxidation (ISCO) is an environmental remediation technique where chemical oxidants such as persulfate, permanganate, or hydrogen peroxide are injected into contaminated soil and groundwater to destroy organic contaminants like TCE, PCE, and petroleum hydrocarbons in place — without excavation.

What contaminants can IET remediate?

IET specializes in TCE remediation, chlorinated remediation, and comprehensive environmental treatment. We remediate chlorinated solvents (TCE/trichloroethylene, PCE/perchloroethylene, DCE, vinyl chloride), petroleum hydrocarbons (BTEX, gasoline, diesel, MTBE), heavy metals (chromium, lead), NAPL, DNAPL, PAHs, creosote, and mixed contamination using ISCO, ISCR, bioremediation, EZVI, and ISGS technologies.

How long does environmental remediation take?

Remediation timelines vary by technology and site conditions. ISCO can achieve significant contaminant reduction in weeks to months. Enhanced bioremediation typically requires 2–5 years of active treatment. IET's patented ferric iron-activated persulfate provides sustained treatment lasting over 2 years to prevent contaminant rebound.

What states does IET provide environmental drilling services?

IET provides environmental and geotechnical drilling services nationwide including Pennsylvania, Ohio, North Carolina, South Carolina, Texas, Florida, New Jersey, New York, Virginia, Georgia, Tennessee, Indiana, Illinois, and more. IET operates 50+ specialized rigs including CME, Geoprobe, AMS, and barge drilling equipment.

ISCO - Large Scale

Provect-OX Injection Program

Potomac Falls, VirginiaMarch-April 2020

Project Overview

IET executed a massive In-Situ Chemical Oxidation program for Clean Sites in Potomac Falls, VA, deploying 214,636 lbs of Provect-OX reagent across 188 injection locations. This multi-week project included piezometer installation, continuous sampling, and water management, representing one of IET's largest single ISCO deployments.

Project Scope

Provect-OX Reagent

214,636 lbs of chemical oxidant delivered and injected

Injection Locations

188 total injection points completed

Piezometer Installation

105 linear feet with DPT services and continuous sampling

Water Management

131,717 gallons of water for injection activities

Project Details

• Client: Clean Sites
• Location: Potomac Falls, VA area
• Completion Date: March 23 - April 9, 2020
• Technology: Provect-OX Chemical Oxidation
• Total Oxidant: 214,636 lbs
• Injection Points: 188 locations
• Total Project Value: $771,753