Wildlife is located on the west side of the Alamo river in Imperial County in Southern California. Evidence of liquefaction was observed at or near the site following the 1930, 1950, 1957, 1979, and 1981 Imperial Valley earthquakes (Youd and Wieczorek 1984). These observations triggered an interest in Wildlife which, in an insightful effort, was instrumented in 1982 by the United States Geological Survey (Youd and Wieczorek 1984; Bennett et al. 1984). The objective was to record ground and pore-pressure response data during earthquakes. These data could then be used to analyze the relations between ground motion, pore-water-pressure buildup and site loss of stiffness and strength (Bennett et al. 1984).