ABSTRACT
This chapter discusses the radon concentration in groundwater from a experimental test zone in a shallow alluvial aquifer in the Santa Clara Valley, California, was measured to study its relationship to the hydrogeologic characteristics of the test zone. The test site is located in the Santa Clara Valley, California, one of the large alluvial filled intermontane valleys of the Coast Range Province. An estimate of aquifer porosity was made based on the results of the emanation measurements from aquifer solids and the measured radon concentration of the groundwater. The reasonable estimates of aquifer porosity described, based on the radon measurements, indicate that the emanation studies of aquifer solids performed in the laboratory in conjunction with measurements of groundwater radon concentration are of value in studying interactions of groundwater with the aquifer solid matrix. The data also suggests that contaminants in the groundwater flowing through the test zone will interact with a range of particle sizes.
