Abstract. Crossed dipole (cross-pole) and parallel dipole (co-pole) GPR data were acquired at an industrial site that formerly operated as a creosote wood treating facility in order to locate buried pipes and tanks or other possible contaminant-filled subsurface structures. Cross-pole data are not typically considered during GPR field studies, but proved esportant to consider during data acquisition, processing and interpretation (Roberts et al., 1992; Roberts, 1994; Roberts and Daniels, 1996). Polarization of the transmitted signal impacts how waves are scattered (reflected and diffracted) from heterogeneities in the subsurface, and the subsequent orientation of the received scattered waves. Receiving antennae are sential for accurate site characterization at this location, as, sensitive to the polarization of scattered electromagnetic images produced using co-pole data had a poor signal to noise ratio. Data interpretations were confirmed through exploratory trenching conducted subsequent to this study. The GPR data proved successful in locating back-filled trenches that contained creosote-filled drainage tile, as well as vaults and a pit filled with pure creosote product at the site.
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