Just want to give all contractors who are removing septic tanks and drain fields a heads up... Be very aware of local and state laws on removing these... I say this because I worked for a county health dept. in Florida as an inspector and I know that my boss was big on proper septic tank abandonment. In the county I worked in and I believe the entire state of Florida, a tank and or field if removed must be sent to a properly licensed landfill where it is treated/decontaminated, however, the tank and field can be left in place and crushed but this will limit the area available for future system instalations. In this and other buisnesses fines are big and can be devestating so you must learn every law you can.