"The purpose of the surface and subsurface Hydrologic Program conducted by Rio Blanco Oil Shale Project [RBOSP] is to establish baseline hydrologic environments, to collect data for mine dewatering design and water right acquisition relating to Tract C-a oil shale development. RBOSP Progress Report 6 submits to the [Area Oil Shale Office] AOSO the data generated by the Hydrologic Program through February 1976, in two parts, the Interpretive Text and Raw Data. The Interpretive Text includes explanations of hydrological data collected in the field, analytical results of water samples by lab methods, and data from the gaging stations associated with Tract C-a submitted by the Water Resources Division of the U.S. Geological Survey. Raw Data volume contains computerized printouts of such materials"--Leaf 1.