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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.

Downers Grove Three-Area Bio Program

Downers Grove, IL

March 2006

Petroleum Bioremediation

Multi-Component Bio Strategy

Clayton Group Services contracted IET for comprehensive three-area petroleum bioremediation combining BioInjection (LPD bacterial culture), ORC slow-release oxygen, and specialized sump treatments with enhanced bacterial loading.

$80,328

Total Investment

Treatment Areas

Area A (28 BioInjection + 25 ORC @ 10-12' BGS)

• BioInjection: 15 gal LPD + 150 gal bioslurry per point ($9,660)

• ORC: 10 lbs per point with 75 gal bioslurry ($8,625)

Total: $18,285

Area B (8 ORC + 6 Sump Injections)

• ORC: Standard 10-12' BGS treatment ($2,760)

• Sump: 110 gal LPD + 1,500 gal bioslurry per point ($4,620)

Total: $7,380

Area C (21 BioInjection + 10 ORC @ 10-12' BGS)

• BioInjection: 10 gal LPD + 150 gal bioslurry per point ($7,245)

• ORC: 10 lbs per point with 75 gal bioslurry ($3,450)

Total: $10,695

Materials Package

• ORC: 555 lbs @ $15.50/lb

• IET's LPD (Liquid Petroleum Degraders): 1,290 gallons @ $22.95/gal

• Nutrient (NutiSource): 1,500 lbs @ $2.69/lb

• Hydrogen Peroxide (35%): 50 gallons @ $19.50/gal

• Mobilization/Demobilization: $750

Project Details

Client

Clayton Group Services, Downers Grove, IL

Project Manager

Steve Swenson

Total Injection Points

98 points across three areas

Ship Date

March 28, 2006