The P-NBS Is an engineered ecological system that allows natural physical, chemical and biological processes to occur all at the same time thanks to the existence of: a) Chemical-aggregates with natural or engineered minerals and active surfaces, b) Physical-gradient of substrate sizes, surface textures and porosity, and c) Biological-specialized plants and additives able to support a healthy microbiome which promotes contaminant degradation, sequestration and volatilization.