[CPEO-BIF] Institutional control monitoring system - EPA completes study

[Lenny Siegel <lsiegel@cpeo.org>]

The following is from the Terradex web site. For the original, as well 
as a link to the referenced EPA study, go to
http://www.terradex.com/PublicPages/News/NewsHome.aspx


USEPA Releases Study Citing Terradex's Prevention of an Environmental 
"Disaster" to the Los Angeles Public Water Supply

Terradex avoided a “disaster” according to the United States 
Environmental Protection Agency (USEPA), threatening the potable water 
in Los Angeles. The local permitting agency missed the conflict with a 
benzene plume. However, Terradex proactively detected the excavation and 
thus allowed the responsible party to step in and prevent a cathodic 
protection well installation through the center of a benzene plume -- 
the installation of which would of breached an aquitard building a 
conduit to the potable supply aquifer of Los Angeles.

In February 2006, the USEPA released their two year evaluation of a 
multi-site case study conducted in California's Silicon Valley. The 
study tested Terradex's monitoring to numerous contamination sites 
including Superfund, BRAC sites, leaking underground fuel sites and 
brownfield sites. An extract from USEPA's report:

"A prime example of the potential of an IC monitoring system to protect 
the public and the environmental from exposure to contamination occurred 
in January 2006. While the Del Amo Superfund site was not technically 
part of the pilot program, many of the same parties using the same 
process employed in the pilot program, detected and prevented a disaster 
from occurring there. Chevron had proposed drilling a 300-foot well for 
cathodic protection of one of its pipelines. The local permitting agency 
missed a conflict with a benzene plume in the area of the planned 
excavation and permitted Chevron to drill the well. The IC monitoring 
service used in the pilot program, Terradex, alerted stakeholders to the 
conflict and Chevron canceled the drilling. Had the well been drilled, 
concentrated benzene would have polluted the Lynwood Aquiifer that 
supplied drinkable water to Los Angeles County. Chevron is now working 
with regulators toward a solution that will protect human health and the 
environment."

--
Lenny Siegel
Director, Center for Public Environmental Oversight
c/o PSC, 278-A Hope St., Mountain View, CA 94041
Voice: 650/961-8918 or 650/969-1545
Fax: 650/961-8918
http://www.cpeo.org

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