The USGS released a new report today of data collected as part of investigations into the possible sources and resulting transport of radionuclides and other dissolved constituents in the surrounding ground water from the Tuba City Open Dump, largest town on the Navajo reservation in northeast Arizona and near the Hopi town of Moenkopi.
USGS OFR 2008-1374, "Geochemical Data from Analyses of Rock, Sediment, Water, and Solid-Phase Leaching at the Tuba City Open Dump, Tuba City, Arizona," includes data collection and analytical methods but no interpretation or conclusions about the results. It's not immediately obvious what the significance is of the data presented. That must be coming in a future publication.