Identify those tectonic events, particularly in the Precambrian, that may have controlled orientation and growth of structures and determine how this knowledge can be translated into an exploration strategy for the area. Ceresco, Nebraska is located approximately 15 miles north of Lincoln, Nebraska. The former USDA CCC site is located on the north edge of the town. Carbon tetrachloride is found in the soil and water samples from wells and test borings in the vicinity of the site and in Ceresco. Concentrations of carbon tetrachloride above MCL have been detected in former public water supply wells.
Indications are that the plume is moving south and westward along the eastern edge of the village.
To aid in the understanding of the subsurface geology and determine the contaminant flow pathways, a high-resolution shear wave seismic reflection survey was proposed. The former USDA CCC site is located 2 miles south of town. Carbon tetrachloride is found in water samples from wells and test borings in the vicinity of the site and the plume is moving eastward toward the Big Blue River. High-resolution shear wave seismic reflection surveys and were used to aid in the understanding of the subsurface geology and determine contaminant flow pathways. The integration of diverse subsurface and soils information is possible using a stack-unit mapping approach.