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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.

Indianapolis Variable-Density Three-Area Program

Indianapolis, IN

October 2019

Variable Density

Variable-Density Three-Area Injection

An environmental consulting firm contracted IET for a three-area remediation program with variable formulations optimized for each area's contamination profile and site-specific conditions. The 25-point program addressed distinct contamination levels across three treatment zones.

Treatment Areas

Area A (5 points)

High-intensity treatment formulation for elevated source area concentrations

Area B (10 points — Largest)

Maximum-concentration area requiring the most intensive substrate package

Area C (10 points)

Lower-intensity downgradient treatment for dissolved plume management

Project Details

Client

Environmental Consulting Firm

Location

Indianapolis, Indiana

Completion Date

October 2019

Total Points

25 injection points across three areas

Contract Type

Variable-density lump sum per treatment area