Ground water contamination

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Across
  1. 1. Just as_______ water generally moves slowly, so do contaminants in ground water
  2. 3. Most______ landfills, however, do not have these safeguards.
  3. 5. Poorly constructed wells can result in _______ water contamination.
  4. 7. it is difficult and expensive to clean up
  5. 9. used in wet areas to help drain water and transport it to deeper soils.
  6. 11. As many as 180,000 surface impoundments _____ in the United States
  7. 16. regulates ground water that is shown to have a connection with surface water.
  8. 18. Using alternative _______ is probably more expensive than obtaining drinking water from the original source.
  9. 19. This_________ is called interaquifer leakage
  10. 22. have entered and contaminated ground water following normal, registered use
  11. 23. Approximately _____ million underground storage tanks exist in the United States and, over the years, the contents of many of these tanks have leaked and spilled into the environment.
  12. 24. a land area larger than the original recharge area, is drawn into the well and the surrounding aquifer
  13. 25. the _______ of many household wastes is not regulated.
  14. 27. Solid waste is disposed of in thousands of municipal and industrial landfills throughout the country
  15. 28. _______ pipes carrying wastes sometimes leak fluids into the surrounding soil and ground water
  16. 29. _______ trucks and train cars pose another chemical storage hazard.
Down
  1. 1. nearly always the result of human activity.
  2. 2. Some substances found naturally in rocks or soils, such as iron, manganese, arsenic, chlorides, fluorides, sulfates, or radionuclides, can become dissolved in ground water.
  3. 4. computer models have been developed to calculate suitable distances and densities.
  4. 6. If there is a nearby river or stream, that water body may also become
  5. 8. _____ should be properly sited and wastes should be removed at regular intervals.
  6. 10. Ground water and contaminants can move rapidly through fractures in
  7. 12. Only 10 ______ of the wells classified as rural were actually located on farms.
  8. 13. These wells are _______ by the U.S. EPA’s Underground Injection Control Program
  9. 14. This phenomenon is called
  10. 15. These _______ often contain metals, acid, minerals, and sulfides.
  11. 17. These may contain agricultural chemicals and bacteria.
  12. 20. One of the main causes of ground water contamination in the United States is the effluent (outflow) from septic tanks, cesspools, and privies
  13. 21. Ground water and_______ can move rapidly through fractures in rocks
  14. 26. Companies should train employees in the proper use and disposal of all chemicals used on _____