COMPANY

Adventus Americas Inc. (AAI) provides various environmental biotechnologies including those exclusive to our sister companies, EnviroMetal Technology, Inc. (ETI) and Adventus Remediation Technologies, Inc. (ART). Our proprietary technologies include DARAMEND® and TERRAMEND® for treatment of soil and sediment, AQUAMEND® for wastewater, AquaBlok+®  for in situ sediment treatment, and EHC®, EHC-O and mGCW systems for in situ groundwater treatment.

Adventus provides biotechnology-based remedial solutions that effectively manage complex, challenging environmental liabilities, while saving our clients significant time and money. Our technically superior remedial solutions are proven to treat a wide range of organic contaminants by accelerating their natural attenuation in soil, sediment and groundwater.

A 16-year record of successes in Adventus’ application of technologies to solve complex environmental problems began within the W.R. Grace & Co. organization (NYSE:GRA). As of December 2007, we have successfully treated over 3,600,000 metric tons of soil impacted by hazardous wastes, and
have applied our in situ groundwater technologies at over 500 sites around
the globe. Our portfolio of remediation successes enables us to uniquely guarantee the performance of our products and services.

Adventus specializes in remedial solutions. Our business model is to support a project team by aiding in the design and selection of the most cost-effective remedial solution or strategy without predisposition or bias to the selection of our proprietary technologies. When their application is justified, however, our proven products may provide significant advantages, and then we provide these. We subsequently rely on select consultancies to support joint projects especially from engineering and construction (oversight) perspectives.

Adventus technical experts specialize in soil microbiology, bioremediation, remedial design support, groundwater modeling and project management.

PRODUCTS

EHC® -- a patented combination of controlled-release carbon plus zero valent iron (ZVI) yields redox potential (Eh; hence EHC or Redox compound) in the -500 to -650 mV range. This Eh is significantly lower than that achieved when using either organic materials (emulsified oils, 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. EHC uniquely offers the benefits of in situ chemical reduction (ISCR).

EHC - A® -- an aqueous (A) formulation of EHC which is shipped as a dry flowable powder or liquid.

EHC - M® -- is specially formulated for in situ immobilization of soluble metals via enhanced precipitation and adsorption reactions. The controlled-release feature of the carbon provides for extended longevity and greatly assists in maintaining very low redox conditions through simultaneous microbial consumption of the carbon and electron acceptors. Arsenic, for example, is precipitated through the production of iron arsenic sulfide minerals that are virtually insoluble in groundwater. EHC-M™ is well suited for treating environments co-impacted by heavy metals and chlorinated solvents.

EHC - O® -- contains an oxygen releasing component that provides a long-term source of dissolved oxygen. Native microorganisms utilize the dissolved oxygen as an electron acceptor, and the targeted contaminant serves as the electron donor resulting in its destruction. The organic carbon component of EHC® provides trace micronutrients required for healthy growth and proliferation of the indigenous, naturally occurring microbial population.

DARAMEND® -- advanced biological treatment technology for soil, sediment, and solid wastes contaminated with recalcitrant organic compounds. DARAMEND® has been used successfully throughout the world to treat over 3,000,000 tons of soil, sediment, and solid wastes containing persistent organic contaminants such as chlorinated pesticides (toxaphene, DDT, dieldrin), wood preservatives and organic explosives (TNT, DNT, RDX, HMX). Performance guaranteed!

TERRAMEND® -- inorganic soil amendments that provide an optimized balance of major, minor, and micronutrients (and oxygen, as needed) designed to cost-effectively enhance bioremediation of soils, sediments, and solid wastes impacted with petroleum hydrocarbons, including gasoline, diesel fuel, jet fuel, heating oil, bunker-C, and a wide variety of other petroleum-based compounds. TERRAMEND™ technology offers the cost-effective reduction of petroleum hydrocarbon concentrations in soils, can often be applied without excavation, generates no odors or leachate, and does not result in bulking.

AQUAMEND® -- a highly efficient, stable biological water treatment technology based on the use of specialized biocarriers and site-specific process optimization. AQUAMEND® biocarriers are specially designed to enable dense bacterial colonization, and to provide protection for the micro-organisms. AQUAMEND® technology has been proven to provide low maintenance, cost effective treatment of industrial process water and groundwater containing a range of compounds including pentachlorophenol, VOCs, base neutral acid extractables (BNAs), chlorinated organics, PAHs, petroleum hydrocarbons, high COD/BOD, landfill leachate, pesticides and herbicides, organic explosives, ammonia, as well as industrial and municipal nitrate.

mGCW -- microbiologically enhanced vertical groundwater circulation well (mGCW) technology significantly modifies conventional GCW systems to effect the removal of inorganic constituents (e.g., heavy metals and nitrate) and/or accelerate the biodegradation of persistent organic compounds under aerobic (e.g., high molecular-weight PAHs) or anaerobic (e.g., organic explosives, chlorinated hydrocarbons) conditions. The mGCW systems are specifically designed and uniquely configured to provide accelerated aerobic, enhanced anaerobic or sequential anaerobic/aerobic reactions. These reactions facilitate terminal destruction of persistent organics, appropriately coupled with the removal of inorganic constituents where needed. The mGCW system treats soil and groundwater simultaneously by drawing groundwater from an aquifer formation through one screen section of a multi-screened well and discharging it through another. This creates an in situ vertical groundwater circulation cell.

RemOx® EC Stabilization Reagent -- Offered through our business partners at Carus Corporation, RemOx EC in situ biogeochemical stabilization (ISBS) entails the use of modified permanganate solutions for the purposes of mass removal and flux reduction (i.e., NAPL stabilization). As the oxidant migrates through the treatment area, various (bio)geochemical reactions destroy the targeted compounds present in the dissolved phase. This causes a “hardening” or "chemical weathering” of the NAPL as it steadily loses its more labile components. This causes a net increase in viscosity of the organic material, which yields a more stable, recalcitrant residual mass.

AquaBlok+® -- horizontal reactive barrier matrixes for in situ management of impacted sediments.

PEOPLE

Adventus is managed by an established team of environmental professionals representing over 80 years of combined experience in the hazardous waste industry.

• Jim Mueller, Ph.D – President / Director of Remedial Solutions & Strategies
• Alan Seech, Ph.D – CEO / Director of Technologies for Adventus Remediation Technologies
• Joanna Moreno, CGWP, PH-GW – Director of Groundwater Services
• Fayaz Lakhwala, Ph.D. – Director of Remedial Design and Engineering Services