The Reston Chlorofluorocarbon Laboratory

Sampling Photos

Mohammad Tahir Mohammad Tahir, Afghanistan Geological Survey, collects a ground-water sample for CFC age interpretation from Afghanistan, August 2004. (Use of plastic tubing for CFC sampling is not recommended).
Sampling Photo U.S. Geological Survey Hydrologist samples water from the Rio Grande, near Albuquerque, NM for chlorofluorocarbons January, 1997
Sampling Photo U.S. Geological Survey Hydrologists sample submerged well in Florida Bay, Florida, November 1997.
Sampling Photo Hydrologist with the Denmark Geological Survey collects a water sample for CFC analysis.
Sampling Photo U.S. Geological Survey Hydrologists sample a spring for CFCs in the Sandia Mountains East of Albuquerque, NM, July 1996.
Sampling Photo Connection to discharge from a domestic well shows splitting of water sample to 1/4" copper for CFCs (left) and teflon tubing for water chemistry (right)
Sampling Photo U.S. Geological Survey Hydrologists prepare to sample a spring in Shenandoah National Park, September, 1997.
Sampling Photo U.S. Geological Survey Hydrologist seals an ampoule for CFC analysis, in Shenandoah National Park, September, 1997.
Sampling Photo Photo showing CFC sampling apparatus and sealing of water sample in borosilicate ampoule. Sample is pumped from a submarine well in the Atlantic Shelf near Key Largo, Florida, November, 1997.
Sampling Photo U.S. Geological Survey hydrologist prepares to sample chlorofluorocarbons from a monitoring well in Albuquerque, NM
Sampling Photo Flame sealing a borosilicate ampoule for CFC Analysis
Sampling Photo U.S. Geological Survey Hydrologist collects water sample for CFC analysis, Shenandoah National Park, Virginia, April, 1996
Sampling Photo Tank of ultra pure nitrogen gas, regulator, and molecular sieve trap (aluminum foil)
Sampling Photo Bennett pump in peristaltic mode sampling backup from spring
Sampling Photo U.S. Geological Survey Hydrologist collects the first USGS water sample for CFC dating. Delmarva peninsula , May, 1989
Sampling Photo Unsaturated zone air is sampled from anlus of blowing domestic well, Southern Idaho. Pictured is pump (center) battery (right) pressurized canister (left)
Sampling Photo 800 ft reel, air compressor, and generator used to sample deep wells in New Mexico
Sampling Photo The back of the sampling apparatus showing connection of valve to well using 1/4" aluminum tubing, and connection to ultra-pure nitrogen through 1/8" copper tubing.
Sampling Photo U.S. Geological Survey Hydrologist samples a production well in the Florida Aquifer near Valdosta, Georgia, 1991
Sampling Photo Front of apparatus and ampoule being sealed
Sampling Photo U.S. Geological Survey Hydrologist seals CFC ampoule from domestic well, Southern Idaho, July, 1996