1.   A coating of butter or water soluble barrier film prevents oxidisation and makes subsequent soil removal easier.

2.   For example, one can prove beyond a reasonable degree of doubt that a conservation project reduces the rate of soil removal.

3.   If you cram too much in, there may not be enough water flow for soil removal.

4.   It recommends that states and local school districts temporarily adopt New York state standards for soil removal, which the report identifies as stricter than most other similar standards.

5.   Still, Brundage said, a tank removal that requires contaminated soil removal as well can cost thousands of dollars.