Exam 21: Solid, Toxic, and Hazardous Waste

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Evaluate the use of dumps, sanitary landfills, and modern secure landfills in disposing of waste.In your evaluation provide the pros and cons and the context for which each disposal method would best work.

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Open dumps:
Pro - cheap, no planning involved, easy to use
Con - non-regulated, unstable-may collapse, groundwater contamination, smells terrible
These types of dumps are mainly found in developing countries where technology and/or money is not available for other means of waste disposal.
Sanitary landfills:
Pro - waste regulated and controlled, covered w/dirt to decrease smell, convenient, relatively inexpensive, can be used to capture methane and generate electricity
Con - sometimes located on permeable or faulted rock formations, possible groundwater contamination, suitable sites becoming scarce
Works best in areas with sufficient land area-away from large populations, built in impermeable and stable geologic regions with little or no threat to groundwater contamination.
Secure landfills:
Pro - allow disposal of toxic waste, liner prevents groundwater contamination
Con - transportation of hazardous waste to disposal sites is the greatest concern because of the chance of accidental chemical spill (especially in urban areas), financial responsibility of abandoned waste sites (must be maintained for many years after being filled), best in areas with large amounts of hazardous wastes that need to be disposed of, would be best located away from urban areas.

Contamination in the Love Canal was from a(n)

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C

If less-developed countries can make money while more-developed countries can rid themselves of waste, why would opponents be against exporting wastes to developing countries?

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E

According to the Household Disposal Guide, what is the best way to dispose of your aerosol cans (hairspray, bug spray, furniture polish, etc.)?

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In recent decades, unregulated open dumps have ____________ in developing countries.

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Individual efforts to reduce the volume of the waste stream

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The National Priority List is a list of sites that

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According to the Household Disposal Guide, which of the following materials should never be disposed of in a drain or toilet?

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The Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) regulates cleanup of Superfund designated hazardous waste sites and the siting, construction, and operation of hazardous waste sites.

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In the United States, about two-thirds of a ton of waste are generated for each person (including children).Compared to the United States, Japan and Europe generate about half that amount.One of the factors that probably does NOT contribute to this difference is

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Explain how incinerator ash can become toxic when the initial material that is incinerated is not toxic.

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Secure landfills are those that

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The main method for disposing of municipal wastes in the United States is ________, while ________ is the main method in Japan.

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Hazardous waste is anything that

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In order to find specific information about toxic materials in your neighborhood, you would consult the

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In the case of sanitary landfills, the cost of disposing of wastes is _____ as technology provides safer alternatives.

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Secure landfills are usually sealed with

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Many states, countries, and corporations dispose of their waste overseas because it is

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Demanufacturing is the disassembly of manufactured homes and is key to reducing the waste stream.

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The questions of ____ and _________ are among the biggest problems in cleaning up hazardous waste sites.

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