(This measure has not been amended since it was introduced. The expanded summary of the House reported version is repeated here, with an updated short title.)
Inland Empire Perchlorate Ground Water Plume Assessment Act of 2010 - Directs the Secretary of the Interior, acting through the Director of the United States Geological Survey (USGS), to complete a study of water resources in the Rialto-Colton Basin, California, including: (1) a survey of ground water resources in the Basin (including the identification of a recent surge in perchlorate concentrations in ground water); and (2) a characterization of surface and bedrock geology of the Basin, including the effect of the geology on ground water yield and quality.
Directs the Secretary to: (1) carry out the study in coordination with California and any other appropriate entities, including other federal agencies and institutions of higher education; and (2) report to specified congressional committees on results of the study.