Dr. Chris travels to Colorado to get the scoop on two textbook cases of modern groundwater contamination and finds out what developers and managers must do in order to deal with them. In this episode, Dr. Chris visits a busy freeway interchange in Colorado Springs and meets workers from Kraemer, North America, who share the groundwater clean-up techniques that were implemented following the discovery of unexpected contamination from previous times. The immediacy of being on location is supplemented with important background information in order to understand how legacy problems such as these are dealt with in the real world.