There are hundreds of thousands of brownfield sites throughout the United States. Proactively monitoring activity on those properties is the best way to promote long-term land stewardship, said Terradex CEO Bob Wenzlau during the recent “State Agency Risk Communication Strategies for Protecting...

Can Terradex still be a startup after 20 years? That is the question I ask myself as I reflect on this milestone. A startup is a fast, bumpy, innovative ride to converge on the model, market, revenue, and profit, and is very much the norm in Silicon Valley. Although Terradex is in the business...

Try to read a typical institutional control (IC) and locate its boundaries. We bet you can’t. You will find a complicated legal description referring to metes and bounds, but not a map of the restricted areas that you can actually see and understand. Only licensed surveyors can decipher...

Excavations are a common event around contaminated sites as each flash of light signifies.  This map shows flashes for each excavations around contaminated sites in New Castle County, Delaware.  Try  adjusting the map, the date may be adjusted on the slider, and the coverage area...

Terradex is testing a mobile web tool to assist excavators and engineers working near spill sites. Now under testing by several utility companies, the web tool permits an excavator to learn chemical information at cleanup sites in Delaware. The tool addresses a common need in the...

Excavations by third-parties are inevitable near any cleanup site. Of concern to cleanup site managers, these unexpected events can breach institutional or engineering controls relied upon in a site’s cleanup remedy. Third-party excavators include utility companies, developers and contractors...