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The New York City Water Board was established in 1905. It sets water and sewer rates for New York City sufficient to pay the costs of operating and financing the system, and collects user payments from customers for services provided by the water and wastewater utility systems of the City of New York.
The UV facility treats water delivered by two of the city's aqueduct systems, the Catskill Aqueduct and the Delaware Aqueduct, via the Kensico Reservoir. [3] (The city's third supply system, the New Croton Aqueduct, has a separate treatment plant. [4]) The plant has 56 energy-efficient UV reactors, and cost the city $1.6 billion.
The material intercepted by high altitude winds will continue to travel. When a radiation cloud at high altitude is exposed to rainfall, the radioactive fallout will contaminate the downwind area below. [37] Agricultural fields and plants will absorb the contaminated material and animals will consume the radioactive material.
The city's wastewater is collected through an extensive grid of sewer pipes of various sizes and stretching over 7,400 miles (11,900 km). The Bureau of Wastewater Treatment (BWT) operates 14 water pollution control plants treating an average of 1.3 billion US gallons (4,900,000 m 3) of wastewater a day; 96 wastewater pump stations: 8 dewatering facilities; and 490 sewer regulators.
The plant was originally constructed in 1967. [3] The plant's unusual public amenities, which include a visitors' center with a manmade waterfall, a nature walk along the Newtown Creek, and the dramatic aesthetic elements, all stem from a long-term upgrade project that was begun by the city in 1998 and is scheduled for completion in 2014. [3]
The level of health risk is dependent on duration and the type and strength of irradiation. Penetrating radiation such as gamma rays, X-rays, neutrons or beta particles pose the greatest risk from an external source. Low penetrating radiation such as alpha particles have a low external risk due to the shielding effect of the top layers of skin.
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AGM2015: A worldwide v̄ e flux map combining geoneutrinos from natural Uranium-238 and Thorium-232 decay in the Earth's crust and mantle as well as manmade reactor-v̄ e emitted by power reactors worldwide. Environmental radioactivity is part of the overall background radiation and is produced by radioactive materials in the human environment.