Compare the design, management, and role of soil in today’s containment landfills with the natural attenuation type most common 30 years ago, and indicate how the changes affect soil and water...

Compare the design, management, and role of soil in today’s containment landfills with the natural attenuation type most common 30 years ago, and indicate how the changes affect soil and water pollution.

Soil organic matter and some silicate clays chemically sorb some organic pollutants and protect them from microbial attack and leaching from the soil. What are the implications (positive and negative) of such protection for efforts to reduce soil and water pollution?