There are other sources of GHG emissions that result from REI's operations, although further assessment is needed to fully define and quantify these activities. Based on various industry benchmarks. For example, potential impacts could result from hydrofluorocarbon gas that escapes from air-conditioning systems during routine maintenance or because of a malfunction. To account for these miscellaneous impacts, we estimated the percentage that these sources represent in REI's operations, which totaled approximately 1,000 tons or 1% of our total inventory. In 2007, we will examine this area more closely and report any resulting adjustments we make to our inventory.