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	Home Upcoming Events Institutions & Organizations People Bays & Estuaries Reefs, Banks & Islands Environmental Issues General Facts about the Gulf Exploration History Other Online Resources Electronic Books Mexican Coral Reef Species Checklist InfoHub Site Search:		Reston Chlorofluorocarbon Laboratory Source: http://water.usgs.gov/lab/cfc/ (4 June, 2004) The Reston Chlorofluorocarbon Laboratory of the U.S. Geological Survey (USGS) was established in 1994 to provide analytical services for determination of the chlorofluorocarbons (CFCs) CFC-11, CFC-12, and CFC-113 in air and water samples. Currently the laboratory provides analytical services for CFCs, sulfur hexafluoride, dissolved gases including nitrogen, argon, methane, carbon dioxide, oxygen and helium, and administers the USGS contract for tritium/helium-3 dating. The data generated by the Reston Chlorofluorocarbon Laboratory are being used in hydrologic studies to trace the flow of young water (0- to 50-year time scale) and to determine the time elapsed since recharge (ground-water age). The laboratory supports research applications of environmental tracers in hydrologic studies conducted by the USGS. It is managed under the direction of L. Niel Plummer and Eurybiades Busenberg of the National Research Program, Water Resources Division, and is located in the USGS Headquarters in Reston, Virginia. The Laboratory conducts research with samples collected countrywide, including the Florida Keys. Reston Chlorofluorocarbon Laboratory Affiliation:   United States Geological Survey (USGS),  United States Department of the Interior Type of Organization:   Research Center or Laboratory Sector:   Federal Government Main Field of Focus:   Chlorofluorocarbon Research; Environmental Tracers in Hydrologic Studies Year Created:   1994 Contact Person:   Plummer, Niel Mailing Address: CFC laboratory US Geological Survey 432 National Center 12201 Sunrise Valley Drive Reston, VA 20192 USA Telephone: +1 703-648-5847 Fax: +1 703-648-5832 E-mail: nplummer@usgs.gov Home Page URL:   http://water.usgs.gov/lab/cfc/ Links to Projects or Publications: South-Florida Eco-System Study Keywords:   Chlorofluorocarbon, Environment, Hydrology, Ground water
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