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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.

ISGS Treatment

South Cedar ISGS Remediation

Tacoma, WashingtonJune 2025

Project Overview

IET executed an In-Situ Generated Solidification (ISGS) remediation program at 3133 South Cedar in Tacoma, WA for Landau Associates. The six-day injection program utilized 23,112 lbs of ISGS amendment material with complete neutralization services, demonstrating our expertise in ISGS technology deployment on the West Coast.

Treatment Details

ISGS Amendment

23,112 lbs of amendment material for soil stabilization

Neutralization Services

Complete post-injection neutralization for environmental compliance

Equipment Deployment

IET injection trailer with supervision and forklift support

Project Duration

6 days of injection operations

Project Details

• Client: Landau Associates, Inc.
• Site: 3133 South Cedar, Tacoma, WA
• Completion Date: June 9, 2025
• Technology: In-Situ Generated Solidification (ISGS)
• ISGS Amendment: 23,112 lbs
• Injection Duration: 6 days
• Project Number: 2238001.010.015.051
• Sales Representative: Mike Scalzi