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Since 2006 a small number of libraries have implemented faceted navigation on their online catalogs. This number seems likely to increase. Aside from small differences in some of the details of these interfaces, the implementations are remarkably similar, especially among academic libraries. A number of assumptions have gone into the design of the faceted catalogs. However, there is little empirical evidence available to suggest how people use text searching in combination with faceted navigation in a library catalog. This study reports the results of log analysis of the NCSU Endeca interface for searches conducted between January and April 2007. Findings from this exploratory study will be useful for designing user studies to answer additional questions about faceted navigation systems