The procedures that this film will explore are biological injections, air sparging, pump and treat, and natural and monitored attenuation. This is called MNA. This video will explain the scenarios these methods work best for. It will also detail how each one works so you can have an idea of the positives and negatives before they are shared. There are many advantages to them, including being simple to use , and swiftly acting. There are some cons, including the need for many more pieces of equipment, and limited choices in terms of the types of contaminants that are able to be handled. 8kmtzjpfpa.