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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.

Durham Washington Street Investigation

Durham, NC

January 2024

Mixed Investigation

Dual-Purpose Assessment

Hart & Hickman contracted IET for a rapid assessment combining groundwater monitoring well installation with soil boring investigation at 802 Washington Street in Durham.

Monitoring Wells

3 wells

1" PVC to ~15 ft depth

Soil Borings

Several

To 10 ft with continuous sampling

Well Construction Details

• Three groundwater monitoring wells
• 1" PVC screens and riser construction
• Depth to approximately 15 feet below grade
• Flush well covers with 2' x 2' concrete pads
• Soil cuttings spread on-site

Project Information

Client

Hart & Hickman, PC (Job No. AXR.001-001B)

Completion

January 29-30, 2024

Duration

1.25 days (rapid mobilization)

Total Cost

$4,574