If your property falls within a City of Los Angeles methane zone, you will need to have a methane test before you do any construction, remodeling, or renovation.
Decomposing organic matter deep within landfills emits literal tons of methane gas into the atmosphere each year. Using landfill methane capture programs, up to 90% of gas emissions can be redirected and used for fuel, electricity, or industrial applications.
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.