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The Rocky Flats Plant, a former U.S. nuclear weapons production facility located about 15 miles (24 km) northwest of Denver, caused radioactive (primarily plutonium, americium, and uranium) contamination within and outside its boundaries. [1] The contamination primarily resulted from two major plutonium fires in 1957 and 1969 (plutonium is ...
Petroleum (0.1%) Other (0.1%) Colorado electricity production by type. This is a list of electric power generation stations in the U.S. State of Colorado, sorted by type and name. As of December 2022, Colorado has a total summer capacity of 18,084 MW through all of its power plants, and a year long net generation in 2022 of 58,407 GWh. [2]
Rulison Test Site today. Project Rulison, named after the rural community of Rulison, Colorado, was an underground 40- kiloton nuclear test project in the United States on September 10, 1969, about 8 miles (13 km) SE of the town of Grand Valley, Colorado (now named Parachute, Colorado) in Garfield County. The location of "Surface Ground Zero ...
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Vehicle emissions inspection station in Wisconsin. Arizona – biennially, in Phoenix and Tucson metro areas only, depending on age and type of vehicle. [28]California – biennially for all vehicles from out-of-state, regardless of age; and all vehicles made after 1975 which are more than six years old in all or some zip codes in 41 out of 58 counties.
Two sets, or tiers, of emission standards for light-duty vehicles in the United States were defined as a result of the Clean Air Act Amendments of 1990. The Tier I standard was adopted in 1991 and was phased in from 1994 to 1997. Tier II standards were phased in from 2004 to 2009. Within the Tier II ranking, there is a subranking ranging from ...
2409737 [8] Website. arvada.org. Arvada (/ ɑːrˈvædə /) is a home rule municipality on the border between Jefferson and Adams counties, Colorado, United States. [1] The city population was 124,402 at the 2020 United States Census, with 121,510 residing in Jefferson County and 2,892 in Adams County. [7] Arvada is the seventh most populous ...
The 1978 limits for mean emissions during a "Hot Start Test" of CO, hydrocarbons, and NO x were 2.1 grams per kilometre (3.38 g/mi) of CO, 0.25 grams per kilometre (0.40 g/mi) of HC, and 0.25 grams per kilometre (0.40 g/mi) of NO x respectively. [40]