EHC^® technology describes a family of remediation products used for the in situ treatment of groundwater and saturated soil impacted by heavy metals and persistent organic compounds such as chlorinated solvents, pesticides and energetics. The technology is a modification of our DARAMEND^® technology which has been used since 1992 to treat over 7,000,000 tons of similarly effected soil and sediment. Both EHC^® and DARAMEND^® are the subjects of numerous patents owned by Adventus Intellectual Properties, Inc. (Adventus).

EHC^® is a controlled-release, integrated carbon and zero valent iron (ZVI) source that yields redox potential (Eh) in the -500 to -650 mV range. This Eh is significantly lower than that achieved when using either organic materials (lactate, molasses, and sugars) or reduced metal alone. Eh potentials in this range facilitate the timely and effective removal of normally recalcitrant chlorinated organics (e.g., CT, PCE) and other persistent compounds (e.g., perchlorate) without the formation of potentially problematic intermediates, such as DCE/VC from the anaerobic degradation of PCE/TCE or CF/DCM from the anaerobic degradation of CT.

• View EHC^® Treatment Mechanisms / Mass Requirements
• View EHC Direct Injection Installation Methods
• View EHC Placement into Open Excavation Methods

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Site Details
Street Address
City
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ZIP Code/Postal Code
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Site Description: Historical Use Buildings: Source of Contamination Current Remediation Activities Etc.
Note: Please Attach - Site maps, containing water table data, contaminant data, and any other maps available.
Unit type for values *	------Please Select------ Metric Imperial
Site Geology
Description of top geologic unit General Thickness (?)
Description of 2nd geologic unit General Thickness (?)
Description of 3rd geologic unit General Thickness (?)
Description of 4th geologic unit General Thickness (?)
Contaminated Aquifer Characteristics for more than one unit, attach characteristics
Hydraulic Gradient (?/?)
Hydraulic Conductivity (?/day)
Soil Dry Bulk Density (lbs/ft3)
Total Porosity (between 0 and 1)
Effective Porosity (between 0 and 1)
Linear Groundwater Velocity (?/?)
Which geologic unit is it?
Note: Please Attach - All lithologic logs and construction logs of monitoring wells in plume area if available.
Geochemistry
List available geochemical data in below table:
Geochemical Parameter Typical Minimum Maximum Redox Potential (mV) pH Total Organic Carbon (mg/L) Dissolved Oxygen (mg/L) Total Manganese (mg/L) Dissolved Manganese (mg/L) Nitrate (mg/L) Nitrite (mg/L) Total Iron (mg/L) Dissolved Iron (mg/L) Sulfate (mg/L) Sulfide (mg/L)
Aim of Remediation
In the sections below, please select the type of remediation requested and provide data for that section.
Source Zone
Is source zone remediation requested?	------Please Select------ Yes No
Width of Source Zone (?)
Length of Source Zone (?)
Depth to Top of Source Zone (?)
Thickness of Source Zone (?)
Depth to Water Table (?)
Depth to Bedrock if applicable (?)
Is there pure phase product on site? If so, which constituents?	No
List primary constituents of concern with concentrations measured in source zone in below table:
Constituent of Concern Maximum Conc. (μg/L) Average Conc. (μg/L) Remedial Target (μg/L)
Total Plume Clean-up
Is total plume clean-up requested?	------Please Select------ Yes No
Width of Plume (?)
Length of Plume (?)
Depth to Top of Plume (?)
Thickness of Plume (?)
Depth to Water Table (?)
Constituent of Concern Maximum Conc. (μg/L) Average Conc. (μg/L) Remedial Target (μg/L)
Plume Containment / Permeable Reactive Barrier (PRB)
Is a PRB requested?	------Please Select------ Yes No
PRB Length (?)
Depth to Top of Plume (?)
Thickness of Plume (?)
Depth to Water Table (?)
Constituent of Concern Maximum Conc. (μg/L) Average Conc. (μg/L) Remedial Target (μg/L)
Other
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