Analysis of Ground Water from Deep Boreholes in Gideaa

摘要

Ground waters from two boreholes in granitic rock at an investigation site in Gideaa has been sampled and analysed. This is part of a larger program of geological, geophysical and hydrogeological investigations aimed at finding a suitable site for a high level radioactive waste respository. Five water-bearing levels in each borehole down to the deepest at about 500 m in the first and about 600 m in the second borehole were selected. Prior to sampling, the water-bearing level is isolated between packer sleeves. The water is then pumped to the surface where sensitive parameters such as redox potential, pH, sulphide and oxygen content are measured electrochemically on the flowing water in a system isolated from the air. Water, filter and gas samples are sent to several laboratories for further analysis. The present report is a presentation of the ground water analysis. The reliability of the results is discussed but there is no evaluation relation to geology and hydrogeology. This report presents the basic results from the ground water analyses to be further evaluated by experts in different fields. (Atomindex citation 15:072136)