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HS&E MAP practice question: Preventing pollution (2 of 4)

E. Environment A free question from our original HS&E MAP practice exam. Try it, then open the answer to see why each option is right or wrong.

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You see a drain marked with a blue cover on your site.

What does GPP6 say about drains like this?

Choose one answer.

  1. A. Only clean rainwater should enter it
  2. B. It is a foul sewer, so anything can go in it
  3. C. It is for washing out concrete
  4. D. It is for pumping out silty water from excavations
Show the answer and explanation

Answer: A

  • A. Right: Right. GPP6 says blue (or the yellow fish symbol) marks surface water drains, which go straight to a watercourse and should only carry clean rainwater.
  • B. Wrong: Wrong. GPP6 says red marks foul sewer connections.
  • C. Wrong: Wrong. Concrete washwater must be collected in an impervious container.
  • D. Wrong: Wrong. Silty water must be treated first.

Explanation

Mark surface water drains blue (or with a yellow fish) and foul drains red. Only clean rainwater goes into surface water drains.

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