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  2. Topsoil - Wikipedia

    en.wikipedia.org/wiki/Topsoil

    Topsoil is composed of mineral particles and organic matter and usually extends to a depth of 5-10 inches (13–25 cm). Together these make a substrate capable of holding water and air which encourages biological activity.

  3. Soil conservation - Wikipedia

    en.wikipedia.org/wiki/Soil_conservation

    Soil conservation is the prevention of loss of the topmost layer of the soil from erosion or prevention of reduced fertility caused by over usage, acidification, salinization or other chemical soil contamination . Slash-and-burn and other unsustainable methods of subsistence farming are practiced in some lesser developed areas.

  4. Drain-waste-vent system - Wikipedia

    en.wikipedia.org/wiki/Drain-waste-vent_system

    A drain-waste-vent system (or DWV) is the combination of pipes and plumbing fittings that captures sewage and greywater within a structure and routes it toward a water treatment system. It includes venting to the exterior environment to prevent a vacuum from forming and impeding fixtures such as sinks, showers, and toilets from draining freely ...

  5. Soil contamination - Wikipedia

    en.wikipedia.org/wiki/Soil_contamination

    v. t. e. Soil contamination, soil pollution, or land pollution as a part of land degradation is caused by the presence of xenobiotic (human-made) chemicals or other alteration in the natural soil environment. It is typically caused by industrial activity, agricultural chemicals or improper disposal of waste. The most common chemicals involved ...

  6. Coal combustion products - Wikipedia

    en.wikipedia.org/wiki/Coal_combustion_products

    Photomicrograph made with a scanning electron microscope and back-scatter detector: cross section of fly ash particles. Fly ash, flue ash, coal ash, or pulverised fuel ash (in the UK)—plurale tantum: coal combustion residuals (CCRs)—is a coal combustion product that is composed of the particulates that are driven out of coal-fired boilers together with the flue gases.

  7. Hunters Point Naval Shipyard - Wikipedia

    en.wikipedia.org/wiki/Hunters_Point_Naval_Shipyard

    The Hunters Point Naval Shipyard was a United States Navy shipyard in San Francisco, California, located on 638 acres (258 ha) of waterfront at Hunters Point in the southeast corner of the city. Originally, Hunters Point was a commercial shipyard established in 1870, consisting of two graving docks. It was purchased and built up in the late ...

  8. Three Corning parks have contaminated soil: What to know ...

    www.aol.com/news/three-corning-parks...

    September 2, 2022 at 12:11 PM. The New York State Department of Environmental Conservation says environmental cleanup is necessary at Corning's McKinney Park and William Street Park, which ...

  9. List of Superfund sites in Arizona - Wikipedia

    en.wikipedia.org/wiki/List_of_Superfund_sites_in...

    This is a list of Superfund sites in Arizona designated under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) environmental law. The CERCLA federal law of 1980 authorized the United States Environmental Protection Agency (EPA) to create a list of polluted locations requiring a long-term response to clean up ...

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