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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.

Alpharetta Rapid ISCO Program

Alpharetta, GA

October 2010

3-Day ISCO

Rapid Deployment Chemical Oxidation

An environmental consulting firm contracted IET for a rapid 3-day ISCO program utilizing ZVI-activated persulfate with hydrogen peroxide enhancement. The project required comprehensive pre-planning including work/chemical spill plans, HASP, fire hydrant permitting, and site coordination.

Chemical Package

Sodium Persulfate (powder)25,359 lbs

Zero Valent Iron (activator)2,377 lbs

Hydrogen Peroxide (35%)1,072 gal

Project Coordination

• Work and chemical spill plan submittals, HASP preparation
• Site mobilization and vendor coordination
• Injection operations: trailer, probe, and vehicles (3 days)
• Chemical management: forklift and storage
• GRP geophysical study (cost-shared)

Project Information

Client

Environmental Consulting Firm

Location

Alpharetta, Georgia

Duration

3 days injection operations

Completion Date

October 2010

Special Services

Water, power washer, traffic control included