f Electrical And Electromagnetic Honltorlng Of A Salt Water Injection Experiment

Since early 1988 several experiments involving the injection<br>of salt water into an aquifer at depth have been conducted at the<br>University of California’s Richmond test site in Richmond,<br>California. The purpose of these tests has been to evaluate the use<br>of electrical and electromagnetic geophysical methods to detect and<br>monitor the location of contaminant plumes. The geology of the test<br>site consists of 35 to 40 m of electrically conductive clays, silts,<br>sands and gravels overlying a more resistive basement. Injection of<br>the slat water plume occurs in a gravel aquifer just above the<br>overburden-basement interface at approximately 30 m depth.