Frontier Field Services

In May 2003, Energy Spectrum and Frontier Energy Services formed Frontier Field Services (“Frontier”) to be a growth platform in the midstream sector providing gathering, processing, treating, compression and marketing services. Frontier established operations in southeastern New Mexico by acquiring the 60 mmcf/d Maljamar atural Gas Processing Plant and related 650-mile gathering system from ConocoPhillips. Frontier also had operations in Southwest Oklahoma and the Texas Panhandle. In June 2004, Frontier was acquired by Aka Energy Group, an affiliate of the Southern Ute Indian Tribe.