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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.

Reston Large-Scale Permanganate

Reston, VA

November 2008

Permanganate ISCO

High-Volume Permanganate Program

An environmental consulting firm contracted IET for large-scale sodium permanganate oxidation treatment. The program injected 15,600 gallons of 40% NaMnO4 solution across 134 injection locations from 10-12 feet below ground surface, utilizing compressed air pathway development at 165 psig prior to chemical introduction.

15,600 gal

40% NaMnO4 Solution

134

Injection Locations

10 days

Field Operations

Technical Approach

• Pre-injection pathway development using 165 psig compressed air
• Injection depth: 10-12 feet below ground surface
• Injection period: November 3–13, 2008
• Complete IET permanganate injection process implementation

Project Information

Client

Environmental Consulting Firm

Location

Reston, Virginia

Completion Date

November 2008

Duration

10 days of continuous field operations