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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.

Ferric-Activated Persulfate ISCO

Water Street Persulfate Injection

Gloucester City, New JerseyFebruary 2023

Project Overview

IET executed a 10-day ferric oxide-activated persulfate ISCO program for CTM Environmental Services at 201 Water Street in Gloucester City, NJ. The project deployed 26,433 lbs of sodium persulfate with 4,800 lbs of ferric activator and 2,500 lbs of magnesium oxide across 64 injection points, demonstrating our expertise in activated persulfate oxidation chemistry.

Treatment Formula

Sodium Persulfate

26,433 lbs primary oxidant

Ferric Activator

4,800 lbs for enhanced oxidation

Magnesium Oxide

2,500 lbs pH buffer

Injection Points

64 locations with specialized tooling

Project Details

• Client: CTM Environmental Services
• Site: 201 Water St, Gloucester City, NJ
• Completion Date: February 13-23, 2023
• Technology: Ferric-Activated Persulfate ISCO
• Total Persulfate: 26,433 lbs
• Injection Points: 64
• Project Duration: 10 days
• Total Project Value: $177,403