Last month I needed to segue into distillation to provide the foundation for this month’s article on condensation. When we speak of condensation the condensed liquids involved will be water and some type of dry cleaning solvent. Condensing a vapor to a liquid can be accomplished by two methods. 1. Cooling a vapor, 2. Pressurizing […]
Category: Enviroment
Using Conceptual Site Models To Direct Investigations And Cleanups By: Steve Henshaw
In the early 1980’s, when the field of environmental consulting was just starting, the United States Congress was busy developing guidance documents to direct how site investigations and cleanup would be conducted. The science was new and there wasn’t a lot of data to draw from with respect to how chemicals “behaved” in the subsurface. […]
Risk Based Cleanup By: Steve Henshaw in Collaboration with Jeff Cornahan
More and more often, people are talking about “Risk Based Cleanups.” It sounds ominous and complicated, but because so many people are throwing the term around, it seems like everyone is supposed to know what it is. In general terms, a “Risk Based Cleanup” is nothing more than the process of getting the regulatory body […]