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The purpose of this report is to present the results of geologic mapping, water-level analyses, and geophysical surveys to characterize the bedrock and to determine the location and orientation of potentially transmissive zones in the rock at the cell-house site in Berlin, N.H. The results of this investigation add to the understanding of the fractured bedrock at the site for remedial activities and provide information needed for ongoing site investigations. Geologic mapping was conducted at the riverbank and selected locations in the Berlin area, and geophysical surveys were used to collect data at the riverbank, site perimeter, and on the site cap. Borehole-geophysical logs were collected at two wells to examine bedrock-fracture characteristics beneath the site cap adjacent to the river. Continuous water-level monitoring was conducted at eight wells and in the river to examine the hydraulic connection between the wells and the river. Because of the scope of the investigation, the characterization focuses on the bedrock geology of the cell-house site and does not include detailed analysis of the overburden materials.