'This is an Agreement and Covenant Not to Sue entered into by and between EPA and the Utah Transit Authority. The Utah Transit Authority is purchasing from Union Pacific Railroad an approximate 20 foot railroad corridor from Payson, Utah to Brigham City, Utah (the Mainline Corridor ). The Mainline Corridor is generally a twenty foot wide section of the existing UPRR corridor and approximately 150 miles long. In addition, UTA is purchasing the D&RGW North Line, the Nye''s Crossing, the TRAX Extension, the Bingham Industrial Lead between Midvale and the end of the line, the Sugarhouse Spur located in South Salt Lake City and other associated and abutting properties.'