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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.

Cincinnati OH Enhanced Bioremediation

Cincinnati, OH

May 2005

$45,907

Project Overview

Enhanced bioremediation project for The Payne Firm featuring HRC (Hydrogen Release Compound) and zero valent iron injection at the bedrock-soil interface. The challenging project included both interior basement injections and exterior treatment, targeting chlorinated solvent contamination with comprehensive nutrient packages.

Treatment Configuration

Injection Distribution

Interior Basement

6 injection points

Exterior Area

12 injection points

Per-Point Material Delivery

HRC (Heated to 150°F)

30 lbs

Zero Valent Iron

54 lbs

Vitamin B2

334.46 g

Vitamin B12

36.13 g

Yeast Extract

4 lbs

IET Nutrient

5 lbs

Plus sodium sulfite (5 lbs) for oxygen scavenging, with high-pressure nitrogen pathway development

Monitoring Infrastructure

Installation of temporary piezometers for monitoring included:

Acetate Liners

PVC Cap/Plug Sets

Sand Bags (50#)

Cement Bags

Project Totals

540 lbs

Total HRC

972 lbs

Total ZVI (1-3 micron)

Injection Points

Project Details

Client

The Payne Firm, Inc.

Contact

Bill Reed

Location

Cincinnati, Ohio 45242

Target Zone

Bedrock-soil interphase

Technology

HRC/Fe Enhanced Bioremediation

Delivery Method

High-pressure N₂ with IET system