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  Water-quality samples were collected in addition to the samples for age determinations during the VAS study. Additional information is needed for the interpretation of the environmental tracers and isotope data.  The types of data and how these data were used are listed in the following table.

 Type

 Purpose
 Major & Minor Ions
General water chemistry & correction of carbon-14 ages
 Radon (222Rn)
Statewide distribution in ground water
 Nitrate (NO3)
Confirmation of susceptibility determinations
 Dissolved organic carbon (DOC)
Confirmation of susceptibility determinations
 Dissolved gases

Estimation of ground-water recharge temperature
 Stable isotopes

Estimation of ground-water recharge temperature
 Helium

Experimental ground-water dating technique and screening tool for 3H/3He dating
 Field Parameters

Sample stabilization

 

Last Updated on 2/4/2002
By David L. Nelms
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Last update: 09/15/04 12:52