Holly Frontier, operator of the only refinery in southeast New Mexico, filed paperwork in May to expand its refinery at Artesia.

Owned by Holly Frontier, the Navajo Refinery has a rated oil capacity of 102,000 b/d and can process most grades of crude, including heavy, sour, light and sweet grades.

The filing with the New Mexico Environment Department indicated the refinery would add a renewable diesel unit, including a new boiler and heater. The expansion would also add six new storage tanks, railcar loading and unloading rack, new cooling tower and piping components.