In general, the method is used to delineate preferential pathways for groundwater flow and the path of contamination within fractured and stratified bedrock.  Salt water slug tracing is a two step process.  Initially, baseline logs of temperature and electrical conductivity are obtained to determine suspected preferred lateral pathways within a well column.  A salt water slug is then injected into a well column and subsequent monitoring of the flow and dilution of the salt water slug is measured using downhole electrical conductivity and temperature probes.  The electrical conductivity and temperature profiles are used to determine lateral flow within a well column and indicate the location of the transmissive fractures. 

 In many aspects the salt water slug tracing test was successful but numerous lessons were learned.