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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.

Hexavalent Chromium - PRB

Kinsman Road Chromium Treatment

Cleveland, OhioJune-July 2025

Project Overview

IET implemented a comprehensive hexavalent chromium remediation program at 6300 Kinsman Road in Cleveland, OH for Partners Environmental Consulting. The project utilized a two-phase approach: ex-situ soil conditioning and in-situ injectable permeable reactive barrier (PRB) installation.

This innovative treatment combined ferrous sulfide/mackinawite with Zero Valent Iron (ZVI) to reduce hexavalent chromium to the less toxic trivalent form, creating a long-term reactive barrier for groundwater treatment.

Treatment Approach

Soil Mixing Phase

640 tons of impacted soil conditioned with ferrous sulfide/mackinawite and ZVI

Completed June 9-10, 2025

Injectable PRB Installation

ZVI and soluble ferrous sulfide solution injected to create reactive barrier

Completed July 2025

Project Details

• Client: Partners Environmental Consulting
• Site: 6300 Kinsman Road, Cleveland, OH
• Completion Date: July 2025
• Technology: ZVI/Ferrous Sulfide PRB for Chromium
• Soil Treated: 640 tons
• Total Project Value: $336,069 (combined phases)
• Sales Representative: Wade Meese