The Fast Flux Test Facility is the most recent Liquid Metal Reactor to be designed, constructed, and operated by the U.S. Department of Energy (DOE). A variety of fuel tests were irradiated in FFTF to provide performance data over a range of conditions. The MFF-3 and MFF-5 tests were U10Zr metal fuel tests with HT9 cladding. A group of fuel pins from these two tests have been selected by DOE for post irradiation examination at Idaho National Laboratory (INL) as part of the Fuel Cycle Research and Development Program. At the request of INL, this report provides a data package of key information on the irradiation environment for these tests that will be useful in interpreting the results of these examinations.