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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.

Ex-Situ Soil Treatment

Lima Street Soil Oxidation Program

Wapakoneta, OhioMarch-April 2025

Project Overview

IET completed a massive ex-situ soil treatment program at 210 Lima Street in Wapakoneta, OH for CTL Engineering. The project involved chemical conditioning and disposal of over 2,700 tons of contaminated soil using oxidant treatment technology with mobile laboratory services for real-time monitoring and optimization.

Treatment Phases

Phase 1 (Feb 25 - Mar 14, 2025)

1,725 tons of soil conditioning and disposal

Rate: $283.97/ton

Phase 2 - Primary Treatment

741 tons at $275/ton with mobile lab support

Phase 2 - Secondary Treatment

280 tons at $134.40/ton

Mobile Laboratory

3 days of on-site analytical services for treatment optimization

Project Details

• Client: CTL Engineering
• Site: 210 Lima Street, Wapakoneta, OH
• Completion Date: March 25, 2025
• Technology: Chemical Oxidant Soil Conditioning
• Total Soil Treated: 2,746 tons
• Mobile Lab Support: 3 days on-site
• Project Number: 23510009COL, Unit 78082
• Total Project Value: $740,343