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Best Available Retrofit Technology
Best Available Retrofit Technology (BART) is a pollution control standard in the United States Clean Air Act. Overview A BART review is required by sections 169AUnited States. Clean Air Act (CAA). Visibility protection for Federal class I areas. and 169B of the Clean Air Act for pollution sources which might cause haze in a "Federal Class 1 area". An example of such a source is the Navajo Generating Station in Page, Arizona which could affect visibility in Grand Canyon National Park. BART provisions were included in the "Clean Air Visibility Rule," published by the United States Environmental Protection Agency (EPA) in 1999, and amended in 2005. Determining best available retrofit technology The Clean Air Act defines Best available retrofit technology:... in determining best available retrofit technology the State (or the Administrator in determining emission limitations which reflect such technology) shall take into consideration the costs of compliance, the energy and nonair ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clean Air Act Of 1963
The Clean Air Act (CAA) is the United States' primary federal air quality law, intended to reduce and control air pollution nationwide. Initially enacted in 1963 and amended many times since, it is one of the United States' first and most influential modern environmental laws. As with many other major U.S. federal environmental statutes, the Clean Air Act is administered by the U.S. Environmental Protection Agency (EPA), in coordination with state, local, and tribal governments. EPA develops extensive administrative regulations to carry out the law's mandates. The associated regulatory programs are often technical and complex. Among the most important, the National Ambient Air Quality Standards program sets standards for concentrations of certain pollutants in outdoor air; the National Emissions Standards for Hazardous Air Pollutants program sets standards for emissions of particular hazardous pollutants from specific sources. Other programs create requirements for vehicle f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haze
Haze is traditionally an atmospheric phenomenon in which dust, smoke, and other dry particulates suspended in air obscure visibility and the clarity of the sky. The World Meteorological Organization manual of codes includes a classification of particulates causing horizontal obscuration into categories of fog, ice fog, steam fog, mist, haze, smoke, volcanic ash, dust, sand, and snow. Sources for particles that cause haze include farming (ploughing in dry weather), traffic, industry, volcanic activity and wildfires. Seen from afar (e.g. an approaching airplane) and depending on the direction of view with respect to the Sun, haze may appear brownish or bluish, while mist tends to be bluish grey instead. Whereas haze often is thought of as a phenomenon occurring in dry air, mist formation is a phenomenon in saturated, humid air. However, haze particles may act as condensation nuclei that leads to the subsequent vapor condensation and formation of mist droplets; such forms of ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Navajo Generating Station
Navajo Generating Station was a 2.25-gigawatt (2,250 MW), coal-fired power plant located on the Navajo Nation, near Page, Arizona, United States. This plant provided electrical power to customers in Arizona, Nevada, and California. It also provided the power for pumping Colorado River water for the Central Arizona Project, supplying about 1.5 million acre feet (1.85 km3) of water annually to central and southern Arizona. As of 2017 permission to operate as a conventional coal-fired plant was anticipated until 2017–2019, and to December 22, 2044, if extended. However, in 2017, the utility operators of the power station voted to close the facility when the lease expires in 2019. In March 2019, the Navajo Nation ended efforts to buy the plant and continue running it after the lease expires. On November 18, 2019, the plant ceased commercial generation. Full decommissioning of the site is projected to take approximately three years. On December 18, 2020, the three smokest ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Page, Arizona
Page is a city in Coconino County, Arizona, United States, near the Glen Canyon Dam and Lake Powell. As of the 2010 census, the population of the city was 7,247. History Unlike other cities in the area, Page was founded in 1957 as a housing community for workers and their families during the construction of nearby Glen Canyon Dam on the Colorado River. Its site was obtained in a land exchange with the Navajo Nation. The city is perched atop Manson Mesa at an elevation of above sea level and above Lake Powell. The city was originally called Government Camp, but was later named for John C. Page, commissioner of the Bureau of Reclamation, 1936–1943. After the dam was completed in 1966, Page officially incorporated as a town on March 1, 1975. The city grew steadily to today's population over 7,000. Because of the new roads and bridge built for use during construction, it has become the gateway to the Glen Canyon National Recreation Area and Lake Powell, attracting more than 3 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grand Canyon National Park
Grand Canyon National Park, located in northwestern Arizona, is the 15th site in the United States to have been named as a national park. The park's central feature is the Grand Canyon, a gorge of the Colorado River, which is often considered one of the Wonders of the World. The park, which covers of unincorporated area in Coconino and Mohave counties, received more than six million recreational visitors in 2017, which is the second highest count of all American national parks after Great Smoky Mountains National Park. The Grand Canyon was designated a World Heritage Site by UNESCO in 1979. The park celebrated its 100th anniversary on February 26, 2019. History The Grand Canyon became well known to Americans in the 1880s after railroads were built and pioneers developed infrastructure and early tourism. In 1903, President Theodore Roosevelt visited the site and said, The Grand Canyon fills me with awe. It is beyond comparison—beyond description; absolutely unparalleled ... [...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] |
United States Department Of The Interior
The United States Department of the Interior (DOI) is one of the executive departments of the U.S. federal government headquartered at the Main Interior Building, located at 1849 C Street NW in Washington, D.C. It is responsible for the management and conservation of most federal lands and natural resources, and the administration of programs relating to Native Americans, Alaska Natives, Native Hawaiians, territorial affairs, and insular areas of the United States, as well as programs related to historic preservation. About 75% of federal public land is managed by the department, with most of the remainder managed by the Department of Agriculture's Forest Service. The department was created on March 3, 1849. The department is headed by the secretary of the interior, who reports directly to the president of the United States and is a member of the president's Cabinet. The current secretary is Deb Haaland. Despite its name, the Department of the Interior has a different ro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Central Arizona Project
The Central Arizona Project (CAP) is a 336 mi (541 km) diversion canal in Arizona in the southern United States. The aqueduct diverts water from the Colorado River to the Bill Williams Wildlife Refuge south portion of Lake Havasu near Parker into central and southern Arizona. CAP is managed and operated by the Central Arizona Water Conservation District (CAWCD). It was shepherded through Congress by Carl Hayden. Description The CAP delivers Colorado River water, either directly or by exchange, into central and Southern Arizona. The project was envisioned to provide water to nearly one million acres (405,000 hectares) of irrigated agricultural land areas in Maricopa, Pinal, and Pima counties, as well as municipal water for several Arizona communities, including the metropolitan areas of Phoenix and Tucson. Authorization also was included for development of facilities to deliver water to Catron, Hidalgo, and Grant counties in New Mexico, but these facilities have ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Navajo Nation
The Navajo Nation ( nv, Naabeehó Bináhásdzo), also known as Navajoland, is a Native American reservation in the United States. It occupies portions of northeastern Arizona, northwestern New Mexico, and southeastern Utah; at roughly , the Navajo Nation is the largest land area held by a Native American tribe in the U.S., exceeding ten U.S. states. In 2010, the reservation was home to 173,667 out of 332,129 Navajo tribal members; the remaining 158,462 tribal members lived outside the reservation, in urban areas (26 percent), border towns (10 percent), and elsewhere in the U.S. (17 percent). The seat of government is located in Window Rock, Arizona. The United States gained ownership of this territory in 1848 after acquiring it in the Mexican-American War. The reservation was within New Mexico Territory and straddled what became the Arizona-New Mexico border in 1912, when the states were admitted to the union. Unlike many reservations, it has expanded several times since ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gila River Indian Community
The Gila River Indian Community (GRIC) (O'odham language: Keli Akimel Oʼotham, ''meaning "Gila River People"'', Maricopa language: Pee-Posh) is an Indian reservation in the U.S. state of Arizona, lying adjacent to the south side of the city of Phoenix, within the Phoenix Metropolitan Area in Pinal and Maricopa counties. Gila River Indian Reservation was established in 1859, and the Gila River Indian Community formally established by Congress in 1939. The community is home for members of both the Akimel O’odham (Pima) and the Pee-Posh (Maricopa) tribes. The reservation has a land area of and a 2020 Census population of 14,260. It is made up of seven districts along the Gila River and its largest communities are Sacaton, Komatke, Santan, and Blackwater. Tribal administrative offices and departments are located in Sacaton. The Community operates its own telecom company, electric utility, industrial park and healthcare clinic, and publishes a monthly newspaper. It has on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salt River Project
The Salt River Project (SRP) is the umbrella name for two separate entities: the Salt River Project Agricultural Improvement and Power District, an agency of the state of Arizona that serves as an electrical utility for the Phoenix metropolitan area, and the Salt River Valley Water Users' Association, a utility cooperative that serves as the primary water provider for much of central Arizona. It is one of the primary public utility companies in Arizona. The name, ''Rio Salado Project'' – "Rio Salado" is Spanish for "Salt River" – used to refer to the improvement projects along the Salt River (Arizona), Salt River through the Phoenix Metropolitan Area, is not related to SRP. Service territory SRP serves nearly all of the Phoenix metropolitan area. A large portion of its electric service territory is shared with Arizona Public Service. Governance Each company of SRP is governed separately. For the Association, landowners elect a president, a vice president, a 10-mem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Environmental Defense Fund
Environmental Defense Fund or EDF (formerly known as Environmental Defense) is a United States-based nonprofit environmental advocacy group. The group is known for its work on issues including global warming, ecosystem restoration, oceans, and human health, and advocates using sound science, economics and law to find environmental solutions that work. It is nonpartisan, and its work often advocates market-based solutions to environmental problems. The group's headquarters are in New York City, with offices across the US, with scientists and policy specialists working worldwide. US regional offices include Austin, Texas; Boston; Boulder, Colorado; Los Angeles; Raleigh, North Carolina; San Francisco; and Washington, D.C. The group has a growing international presence, with offices in London, Brussels, Mumbai and Beijing. Fred Krupp has served as its president since 1984. In May 2011 Krupp was among a group of experts named by US Department of Energy Secretary Steven Chu to a subco ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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