SUMMARYFast and inexpensive methods for exarnining waste disposal sites are becoming increasingly important. We have tested reflection seismic techniques for mapping the depth extent of a landfill. Short geophone spacings and shot spacings together with a Bison 240-chaimel recording system provided high resolution and high subsurface coverage. Processed shot gathers reveal reflection hyperbolae with RMS velocities of -250--400 m/s and a prominent iraveltime delay and offset of the first breaks. Reflections from the top (-20 ms) and bottom (35 -65 ms) of the waste disposal site are prominent features of the shot gathers and stacked section. A combined interpretauon of the stacked section and refracted events yields a model that is consistent with adjacent borehole data.
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