This report presents a three dimensional geohydrologic analysis of aquifer tests run at the BX In Situ Oil Shale Project in Rio Blanco County, Colorado. Field testing included a pump test, an injection test and a packer test during the period May 12 to June 10, 1979. The aquifer analyzed was the leached zone of the Parachute Creek Member of the Green River Formation. Ground water movement determination was also analyzed.