39. In a sanitary landfill, the refuse is dumped into a trench, compacted, and
covered/sealed _________________ with a layer of soil between 6 and 24 inches deep.
Twice a week.
Four times a week.
Five times a week.
How far should a sanitary landfill be from inhabited buildings?
What will an impervious layer of soil at the bottom of the sanitary landfill prevent?
Rodents from harboring.
Which method is used at some installations with little land area to dispose of
garbage and combustible rubbish?
Burial in two-foot trench.