Radon gas is a radioactive gas that naturally forms when radioactive metals such as thorium, radium, or uranium break down underground.
We often think of the foundation of a building as being absolutely solid. While this is the ultimate goal, it is not often true. Buildings can sometimes be faced with a phenomenon known as vapor intrusion. Contaminated groundwater or soil can emit dangerous gasses that find their way up and into structures.
Anyone who has lived in southern California long enough knows that this is fault country, and if you are a property owner you have an obligation to yourself to safeguard your property against damage from earthquakes. Earthquake prediction science is as yet not developed enough to know when one will strike.
Septic systems have a long history. For developers in the early days, it was cheaper and faster to install septic systems than to install public sewers. Starting in the late 1940s and into the 1960s, the widespread use of septic systems for sewage disposal, with little to no governmental regulation, contributed significant pollution and environmental problems to groundwater, slope instability, and degradation of soils.