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  2. Chemical waste - Wikipedia

    en.wikipedia.org/wiki/Chemical_waste

    The U.S. Environmental Protection Agency (EPA) prohibits disposing of certain materials down drains. [4] Therefore, when hazardous chemical waste is generated in a laboratory setting, it is usually stored on-site in appropriate waste containers, such as triple-rinsed chemical storage containers [5] or carboys, where it is later collected and disposed of in order to meet safety, health, and ...

  3. Ash pond - Wikipedia

    en.wikipedia.org/wiki/Ash_pond

    Wet disposal has been preferred due to economic reasons, but increasing environmental concerns regarding leachate from ponds has decreased the popularity of wet disposal. [9] The wet method consists of constructing a large "pond" and filling it with fly ash slurry , allowing the water to drain and evaporate from the fly ash over time.

  4. High-level radioactive waste management - Wikipedia

    en.wikipedia.org/wiki/High-level_radioactive...

    This method is not restricted by international treaties and is recognized as a feasible and advanced technology for nuclear waste disposal. [ 22 ] [ 23 ] [ 24 ] At the natural nuclear fission site discovered at the Oklo mine in Gabon , where nuclear fission reactions occurred 1.7 billion years ago, fission products have moved less than three ...

  5. Low-level radioactive waste policy of the United States

    en.wikipedia.org/wiki/Low-level_radioactive...

    Requirements for LLW disposal sites have been established by the NRC and use a series of natural and engineered barriers to prevent any radioactive waste from escaping into the environment. [3] Currently, the United States has four low-level waste disposal facilities that accept various levels of LLW, all are located in agreement states. [11]

  6. Toxicity characteristic leaching procedure - Wikipedia

    en.wikipedia.org/wiki/Toxicity_characteristic...

    Toxicity characteristic leaching procedure (TCLP) is a soil sample extraction method for chemical analysis employed as an analytical method to simulate leaching through a landfill. The testing methodology is used to determine if a waste is characteristically hazardous, i.e., classified as one of the "D" listed wastes by the U.S. Environmental ...

  7. High-level waste - Wikipedia

    en.wikipedia.org/wiki/High-level_waste

    High-level waste is the highly radioactive waste material resulting from the reprocessing of spent nuclear fuel, including liquid waste produced directly in reprocessing and any solid material derived from such liquid waste that contains fission products in sufficient concentrations; and other highly radioactive material that is determined, consistent with existing law, to require permanent ...

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