Table 2. Selected constituents analyzed in water and rock samples collected near Cave Springs at Great Basin National Park, Nevada, and U.S. Geological Survey laboratories used for analysis.

[All analyses completed at U.S. Geological Survey laboratories]

Constituent	Water samples	Rock samples	Laboratory
Chlorofluorocarbons	Yes	No	Chlorofluorocarbon Laboratory
Dissolved gases	Yes	No	Chlorofluorocarbon Laboratory
Dissolved inorganic carbon	Yes	No	Yucca Mountain Project Environmental Laboratory
Low-level nutrients	Yes	No	National Water Quality Laboratory
Major and trace elements	Yes	No	National Water Quality Laboratory
Stable isotopes carbon	Yes	Yes1	Yucca Mountain Project Environmental Laboratory
Oxygen	No	Yes1	Yucca Mountain Project Environmental Laboratory
Hydrogen and oxygen	Yes	No	Reston Stable Isotope Laboratory
Strontium	Yes2	Yes	Yucca Mountain Project Environmental Laboratory

¹ One rock sample of Pole Canyon Limestone.

² Includes dissolved-strontium concentration in water.