www.nrdc.org/cities/recycling/recyc/chap2.asp
Top of Report Chapter 2 The Downstream Benefits: Decreasing Garbage and the Need for Landfill Space LANDFILLS' TOXIC IMPACTS The most obvious and well-known advantage of recycling is that it leads t o less garbage being buried in landfills, and environmental problems are the major reason more than 10,000 landfills have closed in the United S tates in the past fifteen years. Among the listed Superfund sites, the n ation's most hazardous and contaminated locations, more than 20 percent are former municipal landfills.
The Reason Foundation dismisses concerns about the environmental impacts of landfills by claiming that "properly sited and operated, landfills pose little threat either to hum an health or to the environment."
here's little reason to worry about mode rn landfills, which by federal law must be lined with clay and plastic, equipped with drainage and gas-collection systems, covered daily with soil and monitored regularly for underground leaks.
The Facts Landfills are neither simple, cheap nor environmentally safe. L andfills generate hazardous and uncontrolled air emissions and also thre aten surface and groundwater supplies. Landfills have contaminated aquif er drinking water supplies, wetlands, and streams throughout the United States -- indeed, throughout the world -- and many continue to do so. As detailed below, the list of toxic and hazardous chemicals emitted as ga s or leaching as liquid from literally thousands of landfills defines a waste management option with wide-ranging pollution impacts. Among these documented pollutants are cyanide, dioxins, mercury, volatile organic c ompounds, methane and non-methane organic compounds, greenhouse gases, h ydrochloric acid, sulfuric acid, lead, and many others. Hazardous Air Emissions In March 1996, less than four months before the Times published John Tier ney's pro-landfilling tract "Recycling Is Garbage," the EPA published a regulation, based on years of research, that determined that currently o perating "municipal solid waste landfills cause, or contribute significa ntly to, pollution that may reasonably be anticipated to endanger public health or welfare."
The EPA regulation certified that public h ealth threats caused by currently operating landfills include documented emissions of "known carcinogens"; it also noted "many documented cases of acute injury and death caused by fires and explosions related to muni cipal landfill gas" which occur "both on and off-site."
Specifi c air pollutants listed by the EPA as a concern from currently operating landfills include volatile organic compounds, hazardous air pollutants, methane, odorous compounds, and more than a hundred non-methane organic compounds, including known and suspected carcinogens such as toluene, b enzene, chloroform, carbon tetrachloride, vinyl chloride, trichloroethyl ene, and methylene dichloride, to name just a few.
Landfill gas emissions include high concentrations of methane, which is produced whe n recyclable yard wastes, food wastes, and papers decompose in a landfil l In fact, US landfills are among the single greatest contributors of global methane emissions. Methane produced by landfills is characterize d by the EPA as "a major greenhouse gas...
Controlling dangerous air pollutants produced by landfills is anything bu t "simple" and only about one-third to one-half of currently operating l andfills attempt to do so.
Complicating matters, the long-term effectiveness of landfill caps -- which are supposed to prevent gas emis sions and leachate from landfills after they cease operation -- is unkno wn. Summarizing some of the facts pertaining to the use of landfill caps to control hazardous air emissions at landfills, the chairman of the Ne w York State Bar Association's Environment Committee stated: The long-term integrity of landfill caps is in serious doubt.
A few state environmental agencies have req uired the creation of perpetual care funds, but most states are content with only 20 or 30 years of post-closure care or monitoring.
Despite the confidence antirecycling interests have in the construction d esign of landfills, debate certainly still exists about how to best desi gn landfill caps to control hazardous air emissions. Although compacted clay has to date been the technology of choice for capping landfills, it s long-term integrity is in doubt, and other types of capping are underg oing review as a potential replacement technology for clay caps.
Consequently, geosynthetic a lternatives to compacted clay are being promoted as a better landfill ca p technology. However, the integrity of these alternatives is also uncer tain and still being reviewed. Hazardous air emissions from landfills ar e far from "safe" and far from effectively controlled. Water Pollution It also is not "simple" to protect against the surface water runoff or gr oundwater pollution that landfills typically produce. Despite assurances to the contrary by the Reason Foundation and John Tierney, two-thirds o f currently operating landfills do not have synthetic liners and groundw ater-monitoring technology.
nly 960 of the nation's 2,931 active dumps have synthetic liner syste ms. The liner installation shortfall arose as the EPA delegated to states th e implementation of dump rules, and allowed the states to exempt many d isposal facilities from any synthetic-liner requirement. This shows how even a simple environmental safeguard -- itself far from an absolute protection against fouling groundwater -- ends up being wat ered down as the EPA, states, local government and the waste industry a ll get involved in the implementation of federal rules.
The broad range of exemptions from landfill liner requirements make it im possible to claim, as antirecycling interests do, that currently operati ng landfills do not threaten surface water and groundwater. Another impo rtant reason so few landfills are effectively lined is that "today's str ingent regulations" for landfill liners and groundwater monitoring refer red to in "Recycling Is Garbage" do not come fully into force under US federal law until October 9, 1997.
And beyond these 800 exemptions, scores of other operating land fills will be exempt from the US federal rule governing landfills if t hey are located in EPA "approved states" or on Native American land.
and which vary from the technical specifications the EPA requires "everywhere" else. Questions also remain about the environmental integrity of even those lan dfills that won't be exempt from the EPA's landfill rule.
to have cheaper-than-real-c ost solid waste management that misleads the public into believing that today's landfills are managing their wastes in a technically valid, co st-effective manner.
Groundwater monitoring and protection technologies that are supposed to r educe the dangers inherent in landfilling also face threats that might a rise during years of daily use.
landfills have shown themselves to be s tructurally unstable, and have physically collapsed during filling acti vities. These collapses have typically occurred when the force of waste on the side of a slope exceeded the bearing strength of the slope, cau sing both the waste and the liner to slide down, ripping the containmen t layers and spreading garbage over a large area. The Kettleman Ci ty Landfill in California experienced a similar collapse in the late 19 80s.
"A Disgrace To Any Civilized Society" No discussion of the false hope continued landfilling of wastes out for the nation, and New Yorkers in particular, is complete without a recogn ition of the problems New York City's dump -- the Fresh Kills landfill -- has created during the past fifty years, and continues to create: The city's Fresh Kills landfill is reportedly the world's largest. It st retches over western Staten Island for nearly 3,000 acres and it receiv es over 14,000 tons a day of residential and commercial refuse. It is h ome to roughly about a third of the total waste now being landfilled in New York State. The world's biggest landfill, however, has no state operating permit. Un controlled pollutants streaming into surrounding water is one reason. been observed snaking their ...
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