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第1段

1 .<-NARRATOR:->Now listen to part of a lecture on the topic you just read about.

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第2段

1 .<-FEMALE PROFESSOR:->There should definitely be stricter rules adopted for handling and disposing of coal ash.

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第3段

1 .First, the regulations we have now, for example those that require companies to use liner, are not really sufficient.

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2 .Under the current regulations, liner has to be used only when a company builds a new landfill or a new pond.

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3 .But companies are not required to add liner to old ponds and landfills.

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4 .Yet several of those older disposal sites have caused significant damage—for example, the harmful chemicals from coal ash leaked into groundwater and contaminated drinking water.

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5 .We absolutely need stricter new regulations that will prevent environmental damage at all coal ash disposal sites—the new sites as well as the old ones.

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第4段

1 .Second, stricter rules for handling coal ash won’t necessarily mean that consumers will stop using recycled coal ash products.

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2 .Let’s look at how people responded to strict regulations for other dangerous materials.

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3 .Take mercury, for example.

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第5段

1 .Mercury is a fairly hazardous material, and it’s been subject to very strict handling and storage rules for a long time.

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2 .Yet despite those rules, it’s been successfully and safely recycled for over 50 years and consumers have had very few concerns about it!

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3 .So it’s unlikely that consumers will become afraid to buy recycled coal ash products if stricter regulations are adopted.

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第6段

1 .Third, it’s true that the cost of coal ash storage and handling will increase.

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2 .But in this case, the result is well worth the extra cost.

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3 .According to analysts, the cost to the power companies of implementing these rules would be about $15 billion.

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4 .That sounds like a lot, but when you actually do the math, it would increase the average consumer’s household electricity bill by only about one percent!

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5 .That’s not a big price to pay for having a cleaner environment.

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