Skip to main content

Possible online services disruption due to Internet related outage

A worldwide technology outage is causing disruption to some State of Illinois online systems.  We are aware of this issue and are diligently working on restoration.

Premcor Refinery

Former Premcor Refinery

Blue Island, Illinois

Léalo en Español

The Premcor refinery site occupies nearly 156 acres flanking the southwestern edge of Blue Island. Premcor-owned parcels are within an area bounded to the north and east by 127th St. and a northwest/ southeast railroad line, to the south by the Calumet Sag Channel and to the west by an industrial area. Formerly known as the Clark-Blue Island Refinery, refining operations began at the site with the Great Lakes Refinery in the mid-1920s and continued until Premcor decided to close the refinery in 2001.