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CONCRETE WASH WATER:                   Test Your Concrete Knowledge

Take the following quiz to see how much you know about concrete, fish and fish habitat, and the Fisheries Act.

1.

The Fisheries Act only applies to creeks and does not apply to liquids dumped into street drains.

True

False

2.

Concrete wash-water is no longer toxic to fish if it has been filtered, or if the solids settle out, and it is clear.

True

False

3.

The wash-off of a concrete truck chute is only a few litres so it's not a big deal.

True

False

4.

The safe pH range for most fish in fresh water is between 6.5 and 9.0.

True

False

5.

Water that has contacted uncured concrete may have a pH of 12 or higher.

True

False

6.

While concrete wash-water is an environmental problem, water that has contacted stucco and tile grout is no problem, as long as the water isn't cloudy.

True

False

7.

It is okay to discharge to the drains that are on a street since these go to a treatment plant.

True

False

8.

The pH of a liquid can easily be tested "on-site."

True

False

9.

Concrete wash-water can be treated to lower the pH to non-lethal levels.

True

False

10.

Concrete wash-water is very cloudy and can affect the ability of salmonids to capture food.

True

False

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Send any comments or questions about this page to:  wernickb@pac.dfo-mpo.gc.ca

 

 
 

http://www-heb.pac.dfo-mpo.gc.ca/water_quality/fish_and_pollution/conc_quiz_e.htm

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Fisheries and Oceans Canada - Pacific Region
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Updated: 2006-05-26