TranslateRemediation Strategy Guides
Expert guidance on selecting and implementing the optimal remediation approach based on nearly 2,000 sites designed and implemented since 1998, backed by 14 U.S. patents
Core Remediation Technologies
Enhanced In Situ Chemical Oxidation (ISCO)
Advanced oxidation technologies using persulfate, permanganate, and proprietary formulations
Chlorinated Solvents
Petroleum Hydrocarbons
BTEX
PAHs
Key Advantages
Rapid contaminant destruction- Effective in low permeability zones
- Minimal disruption to operations
- Proven track record across 500+ sites
Technologies
- •Ferric Oxide Activated Persulfate (Patent #8,766,030)
- •Sodium Persulfate with multiple activation mechanisms
- •Sodium/Potassium Permanganate (1.81g MnO4 per 1g TCE)
- •Hydrogen Peroxide/Fenton systems
- •Synergistic Chemical Oxidation + Biological processes (Patent #9,427,786)
Enhanced Bioremediation
Stimulating indigenous microorganisms to biodegrade contaminants through engineered nutrient delivery
Chlorinated Solvents
Petroleum Hydrocarbons
BTEX
MTBE
Key Advantages
- Long-term sustainable treatment
- Cost-effective for large plumes
- Natural attenuation enhancement
- Minimal infrastructure requirements
Technologies
- •Emulsified Zero Valent Iron (EZVI) - NASA-developed technology
- •Encapsulated substrates for controlled hydrogen release (Patent #9,126,244)
- •Electron donor injection (lactate, propionates, butyrate, vegetable oil)
- •Enhanced reductive dechlorination with Dehalococcoides bioaugmentation
- •Methane inhibition technology (Patent #9,221,699) to optimize hydrogen use
- •Vitamin B12 catalyst for accelerated dechlorination (Patents #7,531,709, #7,129,388)
In Situ Geochemical Stabilization (ISGS)Evonik License
IET's innovative proprietary, exclusively licensed approach to NAPL remediation focusing on NAPL encapsulation and flux reduction
DNAPL
Creosote
Coal Tar
PAHs
MGP Contamination
Key Advantages
- Physical coating of NAPL reduces contaminant flux
- Chemical weathering increases NAPL stability
- Lower oxidant dosage than typical ISCO
- Rapid, cost-effective treatment results
Technologies
- •NAPL encapsulation technology
- •Proprietary Evonik licensed formulation
- •Combined oxidation and stabilization mechanisms
- •In-situ flux control methodology
- •Weathering enhancement processes
In Situ Soil Mixing
High-torque mechanical mixing for reagent distribution in low permeability soils
Heavy Metals
Chlorinated Solvents
PAHs
Mixed Contamination
Key Advantages
- Effective in clay and silt formations
- Immediate contact with contaminants
- Uniform reagent distribution
- Suitable for source zone treatment
Technologies
- •Hollow-stem auger mixing
- •Multi-phase reagent injection
- •Real-time depth control
- •Post-treatment verification sampling
Technology Selection Framework
Site Geology
- →Permeability: High permeability favors injections; low favors soil mixing
- →Depth to contamination: Shallow (<30ft) allows more options
- →Lithology: Clay requires different approach than sand/gravel
- →Groundwater flow: Affects plume migration and treatment design
Contaminant Properties
- →Chemical structure: Chlorinated vs. petroleum compounds
- →Concentration levels: High concentrations may require oxidation
- →Distribution: Dissolved phase vs. NAPL vs. sorbed
- →Degradation pathways: Oxidation vs. biological treatment
Regulatory & Timeline
- →Cleanup standards and goals
- →Required treatment timeframe
- →Permit requirements and restrictions
- →Monitoring and reporting obligations
Site Constraints
- →Active operations and access limitations
- →Underground utilities and infrastructure
- →Available staging area
- →Sensitive receptors and vapor intrusion concerns
Typical Implementation Process
Phase 1: Site Assessment & Design
2-4 weeks
- Review existing site data and geology
- Evaluate contamination distribution
- Select optimal remediation technology
- Design injection spacing and reagent dosing
- Develop health & safety protocols
Phase 2: Permitting & Approvals
2-8 weeks
- Prepare work plans and permit applications
- Coordinate with regulatory agencies
- Obtain necessary approvals
- Finalize injection design details
Phase 3: Mobilization & Application
1-3 weeks
- Mobilize equipment and personnel
- Install temporary wells if needed
- Execute reagent injections
- Real-time monitoring and adjustments
- Post-treatment sampling
Phase 4: Monitoring & Evaluation
6-24 months
- Quarterly groundwater monitoring
- Track contaminant concentration trends
- Evaluate treatment effectiveness
- Additional applications if needed
- Path to closure documentation
