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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.

Honeywell Quanta - Coal Tar Remediation

Edgewater, NJ

March-June 2024

Coal Tar / NAPL

Program Highlights

$1.9M+

Total Project Value

59,086

Gallons Injected

4 Phases

North & South Areas

One of IET's largest groundwater remedy programs, executed across multiple phases for Jacobs Engineering on behalf of Honeywell. The project treated both North and South treatment areas with precision reagent delivery.

Treatment Phases

Phase 3a & 3b - North Area (August 2024)

North Area injection completion with borehole abandonment

7,671 gallons injected | $381,870 phase cost

Phase 4a & 4b - South Area 25% (May 2024)

Initial South Area treatment implementation

25,063 gallons injected | $744,493 phase cost

Phase 5a & 5b - South Area 50% (June 2024)

South Area treatment expansion

26,352 gallons injected | $771,369 phase cost

Project Details

Client

Jacobs Engineering (Subcontract No. 148047746)

Site Type

Industrial Facility - Honeywell Quanta

Total Duration

March - June 2024 (Multi-phase program)

Contract Structure

Lump sum + volume-based pricing with 5% retainage