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List Of Superfund Sites In Arkansas
This is a list of Superfund sites in Arkansas 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 hazardous material contaminations.P.L. 96-510, (), December 11, 1980. These locations are known as Superfund sites, and are placed on the National Priorities List (NPL). The NPL guides the EPA in "determining which sites warrant further investigation" for environmental remediation. As of March 26, 2010, there were nine Superfund sites on the National Priorities List in Arkansas. No additional sites are currently proposed for entry on the list. Six sites have been cleaned up and removed from the list. Superfund sites See also *List of Superfund sites in the United States *List of environmental issues *List of waste types *TOXMAP R ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Environmental Protection Agency
The Environmental Protection Agency (EPA) is an independent executive agency of the United States federal government tasked with environmental protection matters. President Richard Nixon proposed the establishment of EPA on July 9, 1970; it began operation on December 2, 1970, after Nixon signed an executive order. The order establishing the EPA was ratified by committee hearings in the House and Senate. The agency is led by its administrator, who is appointed by the president and approved by the Senate. The current administrator is Michael S. Regan. The EPA is not a Cabinet department, but the administrator is normally given cabinet rank. The EPA has its headquarters in Washington, D.C., regional offices for each of the agency's ten regions and 27 laboratories. The agency conducts environmental assessment, research, and education. It has the responsibility of maintaining and enforcing national standards under a variety of environmental laws, in consultation with state, tr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lawrence County, Arkansas
Lawrence County is a County (United States), county located in the U.S. state of Arkansas. As of the 2010 United States Census, 2010 census, the population was 17,415. The county seat is Walnut Ridge, Arkansas, Walnut Ridge. Lawrence County is Arkansas's second county, formed on January 15, 1815, and named for Captain James Lawrence who fought in the War of 1812. It is an alcohol prohibition or dry county. History Following the Louisiana Purchase, the area currently encompassing Lawrence County was contained within the Louisiana Territory from 1805 to 1812, and the Missouri Territory from 1812 until the creation of Arkansas Territory in 1819. While the southern portion of Missouri Territory began to be settled, Lawrence County was created on January 15, 1815 from New Madrid County, Missouri, New Madrid County and Arkansas County, Arkansas, Arkansas County. The large area spanned from Cape Girardeau County, Missouri, Cape Girardeau County to the Arkansas River. Geography Accordi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Toluene
Toluene (), also known as toluol (), is a substituted aromatic hydrocarbon. It is a colorless, water-insoluble liquid with the smell associated with paint thinners. It is a mono-substituted benzene derivative, consisting of a methyl group (CH3) attached to a phenyl group. As such, its systematic IUPAC name is methylbenzene. Toluene is predominantly used as an industrial feedstock and a solvent. As the solvent in some types of paint thinner, permanent markers, contact cement and certain types of glue, toluene is sometimes used as a recreational inhalant and has the potential of causing severe neurological harm. History The compound was first isolated in 1837 through a distillation of pine oil by the Polish chemist Filip Walter, who named it ''rétinnaphte''. In 1841, French chemist Henri Étienne Sainte-Claire Deville isolated a hydrocarbon from balsam of Tolu (an aromatic extract from the tropical Colombian tree ''Myroxylon balsamum''), which Deville recognized as similar to Wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Methylene Dichloride
Dichloromethane (DCM or methylene chloride, methylene bichloride) is an organochlorine compound with the formula . This colorless, volatile liquid with a chloroform-like, sweet odour is widely used as a solvent. Although it is not miscible with water, it is slightly polar, and miscible with many organic solvents.Rossberg, M. ''et al.'' (2006) "Chlorinated Hydrocarbons" in Ullmann's Encyclopedia of Industrial Chemistry, Wiley-VCH, Weinheim. . Occurrence Natural sources of dichloromethane include oceanic sources, macroalgae, wetlands, and volcanoes. However, the majority of dichloromethane in the environment is the result of industrial emissions. Production DCM is produced by treating either chloromethane or methane with chlorine gas at 400–500 °C. At these temperatures, both methane and chloromethane undergo a series of reactions producing progressively more chlorinated products. In this way, an estimated 400,000 tons were produced in the US, Europe, and Japan in 1993 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sebastian County, Arkansas
Sebastian County is a county located in the U.S. state of Arkansas. As of the 2010 census, the population was 125,744, making it the fourth-most populous county in Arkansas. The county has two county seats, Greenwood and Fort Smith. Sebastian County is part of the Fort Smith, AR- OK Metropolitan Statistical Area. History Sebastian County is Arkansas's 56th county, formed on January 6, 1851, and named for William K. Sebastian, United States Senator from Arkansas. Geography According to the U.S. Census Bureau, the county has a total area of , of which is land and (2.6%) is water. It is the second-smallest county by area in Arkansas. Major highways * Interstate 49 * Interstate 540 * U.S. Highway 64 * U.S. Highway 71 * U.S. Highway 271 * State Route 10 * State Route 22 * State Route 45 * State Route 59 * State Route 96 Adjacent counties *Crawford County (north) * Franklin County (east) *Logan County (southeast) * Scott County (south) *Le Flore County, Oklahoma (south ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Industrial Waste Control
Industrial may refer to: Industry * Industrial archaeology, the study of the history of the industry * Industrial engineering, engineering dealing with the optimization of complex industrial processes or systems * Industrial city, a city dominated by one or more industries * Industrial loan company, a financial institution in the United States that lends money, and may be owned by non-financial institutions * Industrial organization, a field that builds on the theory of the firm by examining the structure and boundaries between firms and markets * Industrial Revolution, the development of industry in the 18th and 19th centuries * Industrial society, a society that has undergone industrialization * Industrial technology, a broad field that includes designing, building, optimizing, managing and operating industrial equipment, and predesignated as acceptable for industrial uses, like factories * Industrial video, a video that targets “industry” as its primary audience * Industri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zinc
Zinc is a chemical element with the symbol Zn and atomic number 30. Zinc is a slightly brittle metal at room temperature and has a shiny-greyish appearance when oxidation is removed. It is the first element in group 12 (IIB) of the periodic table. In some respects, zinc is chemically similar to magnesium: both elements exhibit only one normal oxidation state (+2), and the Zn2+ and Mg2+ ions are of similar size.The elements are from different metal groups. See periodic table. Zinc is the 24th most abundant element in Earth's crust and has five stable isotopes. The most common zinc ore is sphalerite (zinc blende), a zinc sulfide mineral. The largest workable lodes are in Australia, Asia, and the United States. Zinc is refined by froth flotation of the ore, roasting, and final extraction using electricity ( electrowinning). Zinc is an essential trace element for humans, animals, plants and for microorganisms and is necessary for prenatal and postnatal development. It ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barium
Barium is a chemical element with the symbol Ba and atomic number 56. It is the fifth element in group 2 and is a soft, silvery alkaline earth metal. Because of its high chemical reactivity, barium is never found in nature as a free element. The most common minerals of barium are baryte ( barium sulfate, BaSO4) and witherite (barium carbonate, BaCO3). The name ''barium'' originates from the alchemical derivative "baryta", from Greek (), meaning 'heavy'. ''Baric'' is the adjectival form of barium. Barium was identified as a new element in 1774, but not reduced to a metal until 1808 with the advent of electrolysis. Barium has few industrial applications. Historically, it was used as a getter for vacuum tubes and in oxide form as the emissive coating on indirectly heated cathodes. It is a component of YBCO (high-temperature superconductors) and electroceramics, and is added to steel and cast iron to reduce the size of carbon grains within the microstructure. Barium compounds ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PCBs
Polychlorinated biphenyls (PCBs) are highly carcinogenic chemical compounds, formerly used in industrial and consumer products, whose production was banned in the United States by the Toxic Substances Control Act in 1979 and internationally by the Stockholm Convention on Persistent Organic Pollutants in 2001. They are organic chlorine compounds with the formula C12 H10−''x'' Cl''x''; they were once widely used in the manufacture of carbonless copy paper, as heat transfer fluids, and as dielectric and coolant fluids for electrical equipment. Because of their longevity, PCBs are still widely in use, even though their manufacture has declined drastically since the 1960s, when a host of problems were identified. With the discovery of PCBs' environmental toxicity, and classification as persistent organic pollutants, their production was banned by United States federal law in 1978, and by the Stockholm Convention on Persistent Organic Pollutants in 2001. The International Agency f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crittenden County, Arkansas
Crittenden County is a county located in the U.S. state of Arkansas. As of the 2010 census, the population was 50,902. The county seat is Marion, and the largest city is West Memphis. Located in the Arkansas Delta, Crittenden County is Arkansas's 12th county, formed October 22, 1825, and named for Robert Crittenden, the first Secretary of the Arkansas Territory. Crittenden County is part of the Memphis, TN-MS-AR Metropolitan Statistical Area. Most of the county's media comes from Memphis, although some Little Rock TV (Arkansas Educational Television Network, KATV) is imported by Comcast Cable. It lies within Arkansas's 1st congressional district. Geography According to the U.S. Census Bureau, the county has a total area of , of which is land and (4.2%) is water. Adjacent counties * Mississippi County (northeast) * Tipton County, Tennessee (east) * Shelby County, Tennessee (east) * DeSoto County, Mississippi (southeast) * Tunica County, Mississippi (south) * Lee County ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gurley Pit
Gurley may refer to: __NOTOC__ People * Gurley (surname) * Gurley Brewer (1866–1919), African-American attorney, newspaper publisher and political activist Places Australia: *Gurley, New South Wales, a town United States: *Gurley, Alabama, a town *Gurley, Louisiana, an unincorporated community *Gurley, Nebraska, a village *Gurley, Horry County, South Carolina Businesses *Gurley Precision Instruments Gurley Precision Instruments, or GPI, is an ISO-9001 certified U.S. manufacturing company based in Troy, New York. History Gurley Enterprise was established by William Gurley and Lewis E. Gurley in 1845, brothers who were both alumni of Renssela ..., an American manufacturing company * Gurley (automobile company), American automobile company (1899–1901) * Gurley Novelty, a defunct candle-making company See also * W. & L. E. Gurley Building, the Gurley Precision Instruments's National Historic Landmark building {{disambiguation, geo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lead
Lead is a chemical element with the symbol Pb (from the Latin ) and atomic number 82. It is a heavy metal that is denser than most common materials. Lead is soft and malleable, and also has a relatively low melting point. When freshly cut, lead is a shiny gray with a hint of blue. It tarnishes to a dull gray color when exposed to air. Lead has the highest atomic number of any stable element and three of its isotopes are endpoints of major nuclear decay chains of heavier elements. Lead is toxic, even in small amounts, especially to children. Lead is a relatively unreactive post-transition metal. Its weak metallic character is illustrated by its amphoteric nature; lead and lead oxides react with acids and bases, and it tends to form covalent bonds. Compounds of lead are usually found in the +2 oxidation state rather than the +4 state common with lighter members of the carbon group. Exceptions are mostly limited to organolead compounds. Like the lighter members of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
