|
California Smog Check Program
The California Smog Check Program requires vehicles that were manufactured in 1976 or later to participate in the biennial (every two years) smog check program in participating counties. The program's stated aim is to reduce air pollution from vehicles by ensuring that cars with excessive emissions are repaired in accordance with federal and state guidelines. With some exceptions, gasoline-powered vehicles, hybrid vehicles, and alternative-fuel vehicles that are eight model-years old or newer are not required to participate; instead, these vehicles pay a smog abatement fee for the first 8 years in place of being required to pass a smog check. The eight-year exception does not apply to nonresident (previously registered out-of-state) vehicles being registered in California for the first time, diesel vehicles 1998 model or newer and weighing 14,000 lbs or less, or specially constructed vehicles 1976 and newer. The program is a joint effort between the California Air Resources ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SMOG - NARA - 542581
Smog, or smoke fog, is a type of intense air pollution. The word "smog" was coined in the early 20th century, and is a portmanteau of the words ''smoke'' and ''fog'' to refer to smoky fog due to its opacity, and odour. The word was then intended to refer to what was sometimes known as pea soup fog, a familiar and serious problem in London from the 19th century to the mid-20th century, where it was commonly known as a London particular or London fog. This kind of visible air pollution is composed of nitrogen oxides, sulfur oxide, ozone, smoke and other particulates. Man-made smog is derived from coal combustion emissions, vehicular emissions, industrial emissions, forest and agricultural fires and photochemical reactions of these emissions. Smog is often categorized as being either summer smog or winter smog. Summer smog is primarily associated with the photochemical formation of ozone. During the summer season when the temperatures are warmer and there is more sunlight presen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biogenic
A biogenic substance is a product made by or of life forms. While the term originally was specific to metabolite compounds that had toxic effects on other organisms, it has developed to encompass any constituents, secretions, and metabolites of plants or animals. In context of molecular biology, biogenic substances are referred to as biomolecules. They are generally isolated and measured through the use of chromatography and mass spectrometry techniques. Additionally, the transformation and exchange of biogenic substances can by modelled in the environment, particularly their transport in waterways. The observation and measurement of biogenic substances is notably important in the fields of geology and biochemistry. A large proportion of isoprenoids and fatty acids in geological sediments are derived from plants and chlorophyll, and can be found in samples extending back to the Precambrian. These biogenic substances are capable of withstanding the diagenesis process in sediment, b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Contra Costa County, California
Contra Costa County (; ''Contra Costa'', Spanish for 'Opposite Coast') is a county located in the U.S. state of California, in the East Bay of the San Francisco Bay Area. As of the 2020 United States census, the population was 1,165,927. The county seat is Martinez. It occupies the northern portion of the East Bay region of the San Francisco Bay Area and is primarily suburban. The county's name refers to its position on the other side of the bay from San Francisco. Contra Costa County is included in the San Francisco–Oakland–Berkeley, CA Metropolitan Statistical Area. History Pre-human In prehistoric times, particularly the Miocene epoch, portions of the landforms now in the area (then marshy and grassy savanna) were populated by a wide range of now extinct mammals, known in modern times by the fossil remains excavated in the southern part of the county. In the northern part of the county, significant coal and sand deposits were formed in even earlier geologic er ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Colusa County, California
Colusa County () is a county located in the U.S. state of California. As of the 2020 census, the population was 21,839. The county seat is Colusa. It is in the northern Sacramento Valley, northwest of the state capital, Sacramento. History Colusa County is one of the original counties of California, created in 1850 at the time of statehood. Parts of the county's territory were given to Tehama County in 1856 and to Glenn County in 1891. The county was named after the 1844 Rancho Colus Mexican land grant to John Bidwell. The name of the county in the original state legislative act of 1850 was spelled ''Colusi'', and often in newspapers was spelled ''Coluse''. The word is derived from the name of a Patwin village known as ''Ko'-roo'' or ''Korusi'' located on the west side of the Sacramento River on the site of the present-day city of Colusa. The name was established as ''Colusa'' by 1855. Early history Present-day Colusa County was originally home to the Patwin b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calaveras County, California
Calaveras County (), officially the County of Calaveras, is a county in both the Gold Country and High Sierra regions of the U.S. state of California. As of the 2020 census, the population was 45,292. The county seat is San Andreas. Angels Camp is the county's only incorporated city. ''Calaveras'' is Spanish for "skulls"; the county was reportedly named for the remains of Native Americans discovered by the Spanish explorer Captain Gabriel Moraga. Calaveras Big Trees State Park, a preserve of giant sequoia trees, is in the county several miles east of the town of Arnold on State Highway 4. Credit for the discovery of giant sequoias there is given to Augustus T. Dowd, a trapper who made the discovery in 1852 while tracking a bear. When the bark from the " Discovery Tree" was removed and taken on tour around the world, the trees became a worldwide sensation and one of the county's first tourist attractions. The uncommon gold telluride mineral calaverite was discovered in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Butte County, California
Butte County () is a county located in the northern central part of the U.S. state of California. In the 2020 census, its population was 211,632. The county seat is Oroville. Butte County comprises the Chico, California, metropolitan statistical area. It is in the California Central Valley, north of the state capital of Sacramento. Butte County is drained by the Feather River and the Sacramento River. Butte Creek and Big Chico Creek are additional perennial streams, both tributary to the Sacramento. The county is home to California State University, Chico and Butte College. History Butte County is named for the visually striking + Sutter Buttes in neighboring Sutter County. Butte County was incorporated as one of California's 27 original counties on February 18, 1850. The county went across the present limits of the Tehama, Plumas, Colusa, and Sutter Counties. Between November 8 and 25, 2018, a major wildfire, the Camp Fire, destroyed most of the town of Par ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amador County, California
Amador County () is a county located in the U.S. state of California, in the Sierra Nevada. As of the 2020 census, the population was 40,474. The county seat is Jackson. Amador County, located within California's Gold Country, is known as "The Heart of the Mother Lode." There is a substantial viticulture industry in the county. History Amador County was created by the California Legislature on May 11, 1854, from parts of Calaveras and El Dorado counties. (historical marker placed by Board of Supervisors and Amador County Historical Society, 1954) It was organized on July 3, 1854. In 1864, part of the county's territory was given to Alpine County. The county is named for José María Amador, a soldier, rancher, and miner, born in San Francisco in 1794, the son of Sergeant Pedro Amador (a Spanish soldier who settled in California in 1771) and younger brother to Sinforosa Amador. In 1848, Jose Maria Amador, with several Native Americans, established a successful g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alpine County, California
Alpine County is a county in the eastern part of the U.S. state of California located within the Sierra Nevada on the state border with Nevada. As of the 2020 census, the population was 1,204, making it California's least populous county. The county seat is Markleeville and the largest community is Alpine Village. History The Washoe people, a Great Basin tribe, inhabited the Sierra Nevada on the California–Nevada boundary, with the Hung A Lel Ti band populating the Diamond Valley including what would become Alpine County. Kit Carson and John C. Frémont were among the first explorers to bring nationwide attention to the Sierra Nevada region in their winter 1844 expedition, though the first known westerners to actually explore the area were Jedediah Smith and Joseph R. Walker. Though gold spurred the infrastructural development of Alpine County, the Comstock Lode found near Virginia City, Nevada and the subsequent silver boom was what triggered Alpine County' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alameda County, California
Alameda County ( ) is a List of counties in California, county located in the U.S. state of California. As of the 2020 United States census, 2020 census, the population was 1,682,353, making it the 7th-most populous county in the state and List of the most populous counties in the United States, 21st most populous nationally. The county seat is Oakland, California, Oakland. Alameda County is in the San Francisco Bay Area, occupying much of the East Bay (San Francisco Bay Area), East Bay region. The Spanish language, Spanish word ''alameda'' means either "a grove of poplars...or a tree lined street". The name was originally used to describe the Arroyo de la Alameda; the willow and sycamore trees along the banks of the river reminded the early Spanish explorers of a road lined with trees. Although a strict translation to English might be "Poplar Grove Creek", the name of the principal stream that flows through the county is now simply "Alameda Creek". Alameda County is part of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
On-board Diagnostics
On-board diagnostics (OBD) is a term referring to a vehicle's self-diagnostic and reporting capability. In the United States, this capability is a requirement to comply with United States vehicle emission standards, federal emissions standards to detect failures that may increase the vehicle tailpipe Air pollution, emissions to more than 150% of the standard to which it was originally certified. OBD systems give the vehicle owner or repair technician access to the status of the various vehicle sub-systems. The amount of diagnostic information available via OBD has varied widely since its introduction in the early 1980s versions of onboard vehicle computers. Early versions of OBD would simply illuminate a Tell-tale (automotive), tell-tale light if a problem was detected, but would not provide any information as to the nature of the problem. Modern OBD implementations use a standardized digital communications port to provide real-time data and Table of OBD-II Codes, diagnostic tro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catalytic Converter
A catalytic converter part is an vehicle emissions control, exhaust emission control device which converts toxic gases and pollutants in exhaust gas from an internal combustion engine into less-toxic pollutants by catalysis, catalyzing a redox chemical reaction, reaction. Catalytic converters are usually used with internal combustion engines fueled by gasoline or diesel fuel, diesel, including lean-burn engines, and sometimes on kerosene heaters and stoves. The first widespread introduction of catalytic converters was in the United States automobile market. To comply with the United States Environmental Protection Agency, U.S. Environmental Protection Agency's stricter regulation of exhaust emissions, most gasoline-powered vehicles starting with the 1975 model year are equipped with catalytic converters. These "two-way" oxidation converters combine oxygen with carbon monoxide (CO) and unburned hydrocarbons (HC) to produce carbon dioxide (CO2) and water (H2O). "Three-way" conve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
OBDII
On-board diagnostics (OBD) is a term referring to a vehicle's self-diagnostic and reporting capability. In the United States, this capability is a requirement to comply with federal emissions standards to detect failures that may increase the vehicle tailpipe emissions to more than 150% of the standard to which it was originally certified. OBD systems give the vehicle owner or repair technician access to the status of the various vehicle sub-systems. The amount of diagnostic information available via OBD has varied widely since its introduction in the early 1980s versions of onboard vehicle computers. Early versions of OBD would simply illuminate a tell-tale light if a problem was detected, but would not provide any information as to the nature of the problem. Modern OBD implementations use a standardized digital communications port to provide real-time data and diagnostic trouble codes which allow malfunctions within the vehicle to be rapidly identified. History * 196 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
