ABSTRACT
The radon concentration in our environment has become a topic of recent attention and medical concern. Federal and state governments are in the process of assessing safe limits of radon exposure, and the public and private sector are working on developing fast and accurate methods of detecting and measuring this element. The sensitivity of this technique depends on the background activity of the system and the cells used, the desired counting statistics and the desired counting interval. A groundwater storage program has been proposed as a long term solution to periodic water shortages in southern California. In order to evaluate this proposal, the Metropolitan Water District of Southern California contracted with James M. Montgomery Consulting Engineers and Camp, Dresser, and McKee to investigate current water quality in the recharge and storage areas of a potential storage site. In order to carry out the sampling and analysis it was necessary to develop careful protocols for all phases of the program.
