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Contacts:
Adventus; Michael Mueller 860.841.9138
ARS; John Poulson 415-828-1177
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Multi-Reactive Treatment Barrier Successfully Treats TCE Contamination
Adventus and ARS Technologies announce the successful completion of Canadian PRB project
NEW BRUNSWICK, N.J. and TORONTO
(February 14, 2007) - ARS Technologies (ARS) and
The Adventus Group have announced the completion of their
first joint project integrating the firms' environmental
treatment technologies. The project, completed for a Canadian
government agency, consisted of the installation of a pilot-scale
multi-reactive treatment barrier at a facility in Quebec,
Canada.
The project site is an active facility that has a TCE plume
migrating to a local river. The plume is about 2.2 km (1.5
miles) long and has three large source areas and a few smaller
source areas. The three source areas co-mingle to form one
large plume. The geology of the site is comprised of sands
and gravels over bedrock with small localized inclusions
of silts and clays. Groundwater velocity is estimated at
1 to 3 feet per day. Depth to bedrock varies but is 95 to
130 feet bgs. A low permeability clay-till layer is located
at about 81 feet bgs. The water table is about 30 feet bgs.
TCE concentrations in the pilot test area are as high as
680 micrograms per liter, but average around 100 to 200 micrograms
per liter.
The installed system will be monitored for the next 10
months as part of an ongoing technology evaluation program.
The installation was implemented by ARS as part of a corrective
measure study to assess the effectiveness of Pneumatic Fracturing/Liquid
Atomized Injection (PF/LAI) and In-Situ Chemical Reduction
(ISCR) emplacing a mixture of zero valent iron (ZVI) powder
and Adventus' EHC bioremediation product (a proprietary mixture
of solid organic carbon and micro-scale iron), for the treatment
of chlorinated volatile organic compounds (CVOCs).
Field operations at the site were performed from June 19
through July 15, 2006. Field work began with installation
of twelve injection boreholes to depths as great as 83 feet,
in a 125 feet long by 25 feet wide treatment area. The reactive
materials were injected by ARS Technologies' patented emplacement
technology termed "Liquid Atomization Injection" (LAI)
using bulk nitrogen gas to maximize the extent and uniformity
of reactive medium distribution. The gas was injected at
flow rates ranging from 300 to 800 scfm using a proprietary
high-pressure pneumatic injection module designed to regulate
the high flow rate. The gas served to drive and disperse
the EHC and ZVI powder into the formation. PF/LAI may be
applied by a steady stream of nitrogen or a pulsing method
in response to formation characteristics at specific intervals
or depths.
Injections were performed in discrete 3.5-ft intervals
in order to isolate and concentrate the energy of the nitrogen
for better distribution. Ten to fifteen injections were conducted
in each of the twelve injection locations. Over four weeks,
a total of 64,877 pounds of ZVI and 26,645 pounds of EHC
material were emplaced directly in the aquifer.
"We're pleased to be to working with our partner, Adventus,
here at this site," said Mike Liskowitz, ARS Project Manager. "This
deep application project represents the first EHC/ZVI barrier
installed using our proprietary gas atomized injection method.
With the results of this project, we look forward to working
with Adventus in extending the applicability of their treatment
products to deeper and more complex geology sites."
David Hill, Adventus' Director of Operations, added "Through
our acquisition of EnviroMetal Technologies Inc., we were
certainly aware of ARS' capabilities to inject ZVI at significant
depths. This demonstration confirmed the efficacy of their
methods for emplacement of EHC, which will broaden the scope
of subsurface environments where EHC can be used to effectively
treat groundwater contamination of both CVOCs and trace metals
with our EHC-M product."
About The Adventus Group
The Adventus Group provides a growing portfolio of leading
environmental remediation technologies, including patented
offerings from Adventus Americas Inc., and EnviroMetal Technologies
Inc. Our business model supports site owners, environmental
engineers, and diverse consulting professionals by providing
unbiased design, and selection of the most cost-effective
remediation strategies.
Adventus exclusively offers DARAMEND®, EHC™ and
related ZVI technologies for In Situ Chemical Reduction (ISCR)
along with TERRAMEND®, AQUABLOK+™, EHC-O™,
O-Sox™, and mGCW-R™ systems to address myriad
soil, sediment and groundwater impacts. Our world-class technical
team is a clearly recognized industry leader. Since its inception
in 2003, Adventus as successfully deployed field installations
at over 200 sites in North America, Europe, Asia, and Australia.
The Adventus family of companies is always seeking strategic
partnerships with complementary remediation biotechnologies,
and qualified international licensees in numerous countries. For
more information contact Michael Mueller at
or visit us online at www.AdventusGroup.com or www.eti.ca.
About ARS Technologies
ARS, founded in 1990 is the world leader in environmental
soil fracturing and injection services. As a field services
subcontractor, ARS focuses on applying its innovative and
patented services at contaminated sites with difficult geologic
conditions. With experienced crews and proprietary
equipment based on both coasts at our New Jersey and California
offices, we effectively service both the North American and
global markets. Using exclusive and proprietary fracturing
and injection processes, ARS offers solutions at sites possessing
clay, silt, fill, fractured rock, fine sands, and other difficult
geologic settings and offers cost-effective treatment options
for our clients at sites that were previously thought untreatable.
At present, our technologies are operating in three countries
and more than thirty- five different states and provinces.
To learn more visit the ARS Technologies Web site at: www.arstechnologies.com.
- END -
For further
information, please contact Adventus Group. |
