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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.

Clinton Former Gas Station

Clinton, New York

IET in-situ chemical oxidation petroleum remediation at former gas station in Clinton NY treating BTEX and petroleum hydrocarbon contamination in soil and groundwater

Project Data

Project Year

2015

Project Duration

4 months

Contaminants of Concern

BTEX

Petroleum Hydrocarbons

Remediation Technologies Used

• In-Situ Chemical Oxidation (ISCO)
• Direct Push Injection
• Advanced Oxidation Reagents

Key Results

✓Over 95% BTEX reduction achieved
✓TPH concentrations below regulatory standards
✓Site approved for regulatory closure
✓Rapid treatment timeline minimized costs

Target Contaminants

BTEX

Petroleum Hydrocarbons

Site Background

The site is a former gas station located in Clinton, New York. Historical operations at the facility resulted in releases of petroleum products, leading to soil and groundwater contamination with benzene, toluene, ethylbenzene, and xylene (BTEX) compounds, as well as total petroleum hydrocarbons (TPH).

The contamination posed risks to nearby receptors and required an effective remediation approach to achieve regulatory closure.

Remediation Strategy

IET implemented an in-situ chemical oxidation (ISCO) program designed to rapidly destroy petroleum hydrocarbons in both soil and groundwater. The treatment approach utilized:

Advanced oxidation reagents for rapid contaminant destruction
Strategic injection point placement to maximize treatment zone coverage
Multiple treatment phases to address residual contamination

Implementation

The injection program was executed using direct-push technology to deliver oxidation reagents throughout the contaminated zone. IET's experienced field crew completed the work efficiently while maintaining strict safety protocols.

Treatment depths extended through the contaminated soil and into the groundwater zone to ensure comprehensive remediation.

Results

The chemical oxidation treatment achieved significant reductions in petroleum contamination:

BTEX compounds reduced by over 95%
TPH concentrations decreased below regulatory standards
Rapid treatment timeline minimized project costs
Site approved for regulatory closure

Project Category

Petroleum Contamination