What are the differences between a sanitary and secure landfill. What is it about a landfill that makes it..?

Question

*that makes it sanitary

Answer 1

A secure landfill has a thicker lining than a sanitary landfill. The specs that are needed to qualify for a secure landfill are greater than that of a sanitary.  Sanitary does have requirements, however. There is a measurement of sand that goes under the liner and a liner of a specific thickness. There are also requirements for daily cover and final cover that differ and are greater for secure. Certain drainage requirements also exist.