Tag Archives: Groundwater

Off-site Groundwater Plumes – Terradex LandWatch Is A Risk Manager’s Best Friend

Groundwater contamination plumes often migrate off-site beyond the site where the chemicals were released.   The fate of the off-site plume poses a vexing risk management challenge for the regulator, potential responsible parties and even affected local governments.  Terradex’s LandWatch is an efficient and effective adjunct to the risk management plan for an off-site plume. […]

Where is the Water Well? The Competing Interests of Homeland Security and Environmental Health

Can you find the location of a water well in on a governmental mapping system? The answer is maybe – and it varies nationwide. A strong tension between the environmental health protection and safeguards for homeland security controls whether you will find that water well.  Environmental health protection invites for more  transparency in water well locations […]

Learning Lessons from a Personal Encounter with a Failing Groundwater Recovery System

Children playing patty-cake in the discharge of the discharge of a remediation recovery well: this article reveals first-hand challenges to landowners and responsible parties when a remedial piping fails.  As the task group chair for ASTM’s Continuing Obligations Guide, Terradex’s Bob Wenzlau shares his personal encounter with a failed remedial system, the difficult to report […]

USEPA Releases Study Citing Terradex’s Protection of the Los Angeles Public Water Supply

Terradex avoided a “disaster” threatening the potable water in Los Angeles, according to the United States Environmental Protection Agency. The local permit agency approved the installation of a cathodic protection well. This type of deep well, used to prevent pipeline corrosion, has perforated walls and can thus allow groundwater to flow downward from a shallow […]