The Premcor Refining Group, Inc.

The Premcor Refining Group, Inc. is a refining business associated with Valero Energy Corporation. Valero identifies refining as one of its core business segments and describes its wider operations as producing fuels and other essential products through safe, reliable, and environmentally responsible operations. The available information supports classifying Premcor primarily in petroleum refining and fuel production; it does not provide Premcor-specific facility, capacity, or contact details.