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Stone Canyon Reservoir
Stone Canyon Reservoir and Upper Stone Canyon Reservoir are adjoining reservoirs in the Westside region of Los Angeles, California. Situated in the Santa Monica Mountains at above sea level, the reservoirs lie in the Bel Air neighborhood, south of Mulholland Drive and west of North Beverly Glen Boulevard. The main reservoir is the Stone Canyon Reservoir with the much smaller, cone-shaped Upper Stone Canyon Reservoir adjoining it to the north. The two reservoirs supply the Westside water subsystem, including service to around 400,000 people in Pacific Palisades, the Santa Monica Mountains, and West Los Angeles. History The reservoirs are owned by the Los Angeles Department of Water and Power. The main reservoir, which is the lower reservoir and the larger of the two, is situated south of the upper reservoir. It was designed and built in 1924 by the Los Angeles Department of Water and Power's water branch, the Bureau of Water Works and Supply (BWWS).23rd Annual Report of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bel Air, Los Angeles
Bel Air (or Bel-Air) is a residential neighborhood on the Westside of Los Angeles, California, in the foothills of the Santa Monica Mountains. Founded in 1923, it is the home of the Hannah Carter Japanese Garden and the American Jewish University. History The community was founded in 1923 by Alphonzo Bell. Bell owned farm property in Santa Fe Springs, California, where oil was discovered. He bought a large ranch with a home on what is now Bel Air Road. He subdivided and developed the property with large residential lots, with work on the master plan led by the landscape architect Mark Daniels. He also built the Bel-Air Bay Club in Pacific Palisades, Los Angeles, Pacific Palisades and the Bel-Air Country Club. His wife chose Italian names for the streets. She also founded the Bel-Air Garden Club in 1931. Together with Beverly Hills, California, Beverly Hills and Holmby Hills, Bel Air forms the Platinum Triangle, Los Angeles, Platinum Triangle of Los Angeles neighborhoods. Fires ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
California Department Of Transportation Environmental Enhancement
California is a U.S. state, state in the Western United States, located along the West Coast of the United States, Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the List of states and territories of the United States by population, most populous U.S. state and the List of U.S. states and territories by area, 3rd largest by area. It is also the most populated Administrative division, subnational entity in North America and the 34th most populous in the world. The Greater Los Angeles area and the San Francisco Bay Area are the nation's second and fifth most populous Statistical area (United States), urban regions respectively, with the former having more than 18.7million residents and the latter having over 9.6million. Sacramento, California, Sacramento is the state's capital, while Los Angeles is the List of largest California cities by population, most populous city in the state and the List of United States cities by population, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Federal Law
Federal law is the body of law created by the federal government of a country. A federal government is formed when a group of political units, such as states or provinces join in a federation, delegating their individual sovereignty and many powers to the central government while retaining or reserving other limited powers. As a result, two or more levels of government exist within an established geographic territory. The body of law of the common central government is the federal law. Examples of federal governments include those of Australia, Brazil, Canada, Germany, Malaysia, Pakistan, Republic of India, Russia, the former Soviet Union and the United States. Australia Brazil Canada Germany India Malaysia Pakistan Russia United States The United States Constitution established through the supremacy clause that the United States Constitution and federal law takes precedent over state law. These powers include the authority to govern international af ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Surface Runoff
Surface runoff (also known as overland flow) is the flow of water occurring on the ground surface when excess rainwater, stormwater, meltwater, or other sources, can no longer sufficiently rapidly infiltrate in the soil. This can occur when the soil is saturated by water to its full capacity, and the rain arrives more quickly than the soil can absorb it. Surface runoff often occurs because impervious areas (such as roofs and pavement) do not allow water to soak into the ground. Furthermore, runoff can occur either through natural or man-made processes. Surface runoff is a major component of the water cycle. It is the primary agent of soil erosion by water. The land area producing runoff that drains to a common point is called a drainage basin. Runoff that occurs on the ground surface before reaching a channel can be a nonpoint source of pollution, as it can carry man-made contaminants or natural forms of pollution (such as rotting leaves). Man-made contaminants in runoff i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sylmar, Los Angeles
Sylmar is a suburban neighborhood in the San Fernando Valley and is the northernmost neighborhood within the City of Los Angeles. Historically known for its profusion of sylvan olive orchards, Sylmar can trace its past to the 18th century and the founding of the San Fernando Mission. In 1890, olive production was begun systematically. The Sylmar climate was also considered healthy, and so a sanitarium was established, the first in a series of hospitals in the neighborhood. There are fourteen public and eight private schools within Sylmar. History Naming San Fernando became a city in 1874, leading to the naming of the unincorporated land surrounding San Fernando as Morningside. In 1893 the area was named Sylmar, a fusion of two Latin words for "trees" and "sea". Around 2000, some residents proposed a plan to rename the northwest portion of the district as Rancho Cascades. The name change was approved in 2018. Sylmar has been nicknamed "The Top of Los Angeles." Olives The f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Los Angeles Aqueduct Filtration Plant
LOS, or Los, or LoS may refer to: Science and technology * Length of stay, the duration of a single episode of hospitalisation * Level of service, a measure used by traffic engineers * Level of significance, a measure of statistical significance * Line-of-sight (other) * LineageOS, a free and open-source operating system for smartphones and tablet computers * Loss of signal ** Fading **End of pass (spaceflight) * Loss of significance, undesirable effect in calculations using floating-point arithmetic Medicine and biology * Lipooligosaccharide, a bacterial lipopolysaccharide with a low-molecular-weight * Lower oesophageal sphincter Arts and entertainment * ''The Land of Stories'', a series of children's novels by Chris Colfer * Los, or the Crimson King, a character in Stephen King's novels * Los (band), a British indie rock band from 2008 to 2011 * Los (Blake), a character in William Blake's poetry * Los (rapper) (born 1982), stage name of American rapper Carlo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Stone Canyon Water Quality Improvement Project
''The'' () is a grammatical article in English, denoting persons or things that are already or about to be mentioned, under discussion, implied or otherwise presumed familiar to listeners, readers, or speakers. It is the definite article in English. ''The'' is the most frequently used word in the English language; studies and analyses of texts have found it to account for seven percent of all printed English-language words. It is derived from gendered articles in Old English which combined in Middle English and now has a single form used with nouns of any gender. The word can be used with both singular and plural nouns, and with a noun that starts with any letter. This is different from many other languages, which have different forms of the definite article for different genders or numbers. Pronunciation In most dialects, "the" is pronounced as (with the voiced dental fricative followed by a schwa) when followed by a consonant sound, and as (homophone of the archaic pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ambient Noise Level
In atmospheric sounding and noise pollution, ambient noise level (sometimes called background noise level, reference sound level, or room noise level) is the background sound pressure level at a given location, normally specified as a reference level to study a new intrusive sound source. Ambient sound levels are often measured in order to map sound conditions over a spatial regime to understand their variation with locale. In this case the product of the investigation is a sound level contour map. Alternatively ambient noise levels may be measured to provide a reference point for analyzing an intrusive sound to a given environment. For example, sometimes aircraft noise is studied by measuring ambient sound without presence of any overflights, and then studying the noise addition by measurement or computer simulation of overflight events. Or roadway noise is measured as ambient sound, prior to introducing a hypothetical noise barrier intended to reduce that ambient noise le ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trihalomethane
In chemistry, trihalomethanes (THMs) are chemical compounds in which three of the four hydrogen atoms of methane () are replaced by halogen atoms. Many trihalomethanes find uses in industry as solvents or refrigerants. THMs are also environmental pollutants, and many are considered carcinogenic. Trihalomethanes with all the same halogen atoms are called haloforms. Table of common trihalomethanes Industrial uses Only chloroform has significant applications of the haloforms. In the predominant application, chloroform is required for the production of tetrafluoroethylene, precursor to teflon. Chloroform is fluorinated by reaction with hydrogen fluoride to produce chlorodifluoromethane (R-22). Pyrolysis of chlorodifluoromethane (at 550-750 °C) yields TFE, with difluorocarbene as an intermediate. :CHCl3 + 2 HF -> CHClF2 + 2 HCl :2 CHClF2 -> C2F4 + 2 HCl Refrigerants and solvents Trifluoromethane and chlorodifluoromethane are both used as refrigerants. Trihalome ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bacteria
Bacteria (; singular: bacterium) are ubiquitous, mostly free-living organisms often consisting of one biological cell. They constitute a large domain of prokaryotic microorganisms. Typically a few micrometres in length, bacteria were among the first life forms to appear on Earth, and are present in most of its habitats. Bacteria inhabit soil, water, acidic hot springs, radioactive waste, and the deep biosphere of Earth's crust. Bacteria are vital in many stages of the nutrient cycle by recycling nutrients such as the fixation of nitrogen from the atmosphere. The nutrient cycle includes the decomposition of dead bodies; bacteria are responsible for the putrefaction stage in this process. In the biological communities surrounding hydrothermal vents and cold seeps, extremophile bacteria provide the nutrients needed to sustain life by converting dissolved compounds, such as hydrogen sulphide and methane, to energy. Bacteria also live in symbiotic and parasitic re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coliform
Coliform bacteria are defined as either motile or non-motile Gram-negative non- spore forming Bacilli that possess β-galactosidase to produce acids and gases under their optimal growth temperature of 35-37°C. They can be aerobes or facultative aerobes, and are a commonly used indicator of low sanitary quality of foods, milk, and water. Coliforms can be found in the aquatic environment, in soil and on vegetation; they are universally present in large numbers in the feces of warm-blooded animals as they are known to inhabit the gastrointestinal system. While coliform bacteria are not normally causes of serious illness, they are easy to culture, and their presence is used to infer that other pathogenic organisms of fecal origin may be present in a sample, or that said sample is not safe to consume. Such pathogens include disease-causing bacteria, viruses, or protozoa and many multicellular parasites. Genera Typical genera include: * ''Citrobacter ''are peritrichous facultativ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nephelometric Turbidity Unit
Turbidity is the cloudiness or haziness of a fluid caused by large numbers of individual particles that are generally invisible to the naked eye, similar to smoke in air. The measurement of turbidity is a key test of water quality. Fluids can contain suspended solid matter consisting of particles of many different sizes. While some suspended material will be large enough and heavy enough to settle rapidly to the bottom of the container if a liquid sample is left to stand (the settable solids), very small particles will settle only very slowly or not at all if the sample is regularly agitated or the particles are colloidal. These small solid particles cause the liquid to appear turbid. Turbidity (or haze) is also applied to transparent solids such as glass or plastic. In plastic production, haze is defined as the percentage of light that is deflected more than 2.5° from the incoming light direction. Causes and effects Turbidity in open water may be caused by growth of phytopla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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