The U.S. Environmental Protection Agencys scientific and technical decisions in assessing risks to human health from pollution at a Superfund site in the Coeur dAlene River Basin have been generally sound, says a new report from the National Academies National Research Council. And the agencys remediation plans for residential areas should adequately protect residents against the most serious health threats, provided floods do not recontaminate cleaned-up areas. However, the committee that wrote the report expressed "substantial concerns" about EPAs proposed strategies for cleaning up and protecting the environment, including fish and wildlife.
Congress asked the Research Council to assess EPAs decisions concerning a 1,500-square-mile area in the Coeur dAlene River Basin of northern Idaho and eastern Washington that is designated for cleanup under Superfund legislation because of contamination from years of mining for silver, zinc, and lead. A 21-square-mile "box" around Idahos Bunker Hill Mining and Metallurgical Complex was declared a Superfund site in 1983 after high blood levels of lead were detected in local children, and high levels of metals were measured in the environment.
EPA expanded its Superfund cleanup in 1998 to include contaminated areas throughout the Coeur dAlene River Basin, and in 2002 outlined a plan to clean up parts of this pollution and lessen risks to human health and the environment. Three-quarters of the proposed $359 million expenditures are to finance the first steps toward protecting the environment, including fish and wildlife, over an approximate 30-year period. The committees concerns pertain primarily to these remedies. The other quarter of the funds is intended to address human health risks, which EPA expects to accomplish well before the 30-year mark.
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03.04.2017 | American Chemical Society
Litter is present throughout the world’s oceans: 1,220 species affected
27.03.2017 | Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung
More and more automobile companies are focusing on body parts made of carbon fiber reinforced plastics (CFRP). However, manufacturing and repair costs must be further reduced in order to make CFRP more economical in use. Together with the Volkswagen AG and five other partners in the project HolQueSt 3D, the Laser Zentrum Hannover e.V. (LZH) has developed laser processes for the automatic trimming, drilling and repair of three-dimensional components.
Automated manufacturing processes are the basis for ultimately establishing the series production of CFRP components. In the project HolQueSt 3D, the LZH has...
Reflecting the structure of composites found in nature and the ancient world, researchers at the University of Illinois at Urbana-Champaign have synthesized thin carbon nanotube (CNT) textiles that exhibit both high electrical conductivity and a level of toughness that is about fifty times higher than copper films, currently used in electronics.
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The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.
Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...
The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...
Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.
Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...
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