C&G 2365 201-15 Environmental Protection

What is a potential cause of land contamination in the electrical trade?

• Proper disposal of waste

• Recycling all materials

• Dumping solid waste inappropriately

• Using biodegradable materials

What is an example of inappropriate waste disposal mentioned in the text?

• Recycling PVC conduit

• Placing waste plastic in ordinary waste containers

• Composting organic waste

• Using reusable containers

How long might it take for PVC plastic to degrade in a landfill?

• A few months

• A few years

• Hundreds of years

• A decade

What type of pollution is generally caused by the installation of electrical infrastructure?

• Direct pollution

• Indirect pollution

• Water pollution

• Noise pollution

Which of the following is a cause of direct air pollution mentioned in the text?

• Solar panel installation

• Exhaust from diesel generators

• Wind turbine noise

• Hydroelectric dam construction

What is a significant source of air pollution when burning waste on site?

• Metal scraps

• Insulation on scrap cable

• Glass bottles

• Food waste

What are the potential consequences of discharging liquids into watercourses or the sewage system?

• It can improve water quality.

• It can have serious implications for wildlife and humans.

• It can increase fish population.

• It can reduce water treatment costs.

What is the purpose of treatment works in relation to river water?

• To increase the water temperature.

• To purify it to produce potable water.

• To add chemical pollutants.

• To change the water color.

Why might treated water still be unfit for human consumption?

• It may contain too much oxygen.

• It may not eradicate chemical pollutants.

• It may be too cold.

• It may have a high mineral content.

What is an example of a substance that should not be disposed of by pouring down the sink?

• Cooking oil

• Battery acid

• Soap water

• Vinegar