Publisher – Environmental and Engineering Geophysical Society (EEGS), 1994 Symposium on the Application of Geophysics to Engineering and Environmental Problems (SAGEEP) proceedings. Authors – Edward P. Pedersen, Jacobson Helgoth Consultants, Lakewood, Colorado, U.S.A.; David Butler, MicroGeophysics Corporation, Wheat Ridge, Colorado, U.S.A. Paper – [pdf] ENV_Butler_1994_Use_of_Geophysical_Methods_to_Refine_Geological_Site_Characterization Introduction