6. In the United States the building of landfills is the job of both federal and local governments.
7. Hazardous wastes have to be treated before being dumped into landfills.
8. Typical customers of a landfill are __________________.
9. To dispose of a ton of trash in a landfill, customers have to pay tipping fee of ____________.
10. Materials that are not permitted to be buried in landfills should be dumped at ____________.
Unit 1
1. Y 2. Y 3. N 4.N 5. Y
6.N 7.NG
8. municipalities and construction companies
9. $10 to $40
10. drop off stations
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