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Area code 253 is a telephone area code in the North American Numbering Plan (NANP) for a part of the U.S. state of Washington. The numbering plan area (NPA) includes cities in King County that are situated south of Seattle and the southern Puget Sound area, centered at Tacoma and extending to include the areas around Gig Harbor , Auburn , and Roy .
In early US history, drinking water quality in the country was managed by individual drinking water utilities and at the state and local level. In 1914 the U.S. Public Health Service (PHS) published a set of drinking water standards, pursuant to existing federal authority to regulate interstate commerce , and in response to the 1893 Interstate ...
Water storage. Water storage is a broad term referring to storage of both potable water for consumption, and non potable water for use in agriculture. In both developing countries and some developed countries found in tropical climates, there is a need to store potable drinking water during the dry season. In agriculture water storage, water is ...
The total volume of water on Earth is estimated at 1.386 billion km 3 (333 million cubic miles), with 97.5% being salt water and 2.5% being freshwater. Of the freshwater, only 0.3% is in liquid form on the surface. [ 2][ 3][ 4] Because the oceans that cover roughly 70.8% of the area of Earth reflect blue light, Earth appears blue from space ...
The United States government built a top-secret facility to produce and separate plutonium for nuclear weapons, and decided on an area just north of then-tiny Richland. The government built temporary quarters for the more than 45,000 workers and built permanent homes and infrastructure for other personnel in Richland.
Nautical time. Nautical time is a maritime time standard established in the 1920s to allow ships on high seas to coordinate their local time with other ships, consistent with a long nautical tradition of accurate celestial navigation. Nautical time divides the globe into 24 nautical time zones with hourly clock offsets, spaced at 15 degrees by ...
In the United States, time is divided into nine standard time zones covering the states, territories and other US possessions, with most of the country observing daylight saving time (DST) for approximately the spring, summer, and fall months. The time zone boundaries and DST observance are regulated by the Department of Transportation, but no ...
this was the first part of North America to have its code changed three times: from 213 to 714 1951: to 619 in 1982, and to 760 in 1997. was to have originally split off the portion of 760 serving San Diego County to a new 442 area code in late 2008/early 2009; that plan was cancelled. 2009: overlaid by 442. 761.