A more-than-permitted amount of sulfur dioxide is being released into the air. Air quality remains safe, DNREC reports ...

The Delaware City Refinery is "one of the largest and most complex refineries on the East Coast," the website says, and can process up to 180,000 barrels of oil per day.

None of the violations issued so far this year are related to the most recent incident, which is still under investigation.

Residents are calling for tougher environmental laws, and want regulators to evaluate what could have been done differently.

The Delaware City Refinery said that repairs to the primary emissions control device have been completed. The final stages of system restoration are in the works, according to the update provided ...

Delaware City Refinery is releasing high levels of the toxic sulfur dioxide, DNREC reports say. DNREC says the spill is the result of a boiler issue and is being repaired.

The Delaware City Refinery is "one of the largest and most complex refineries on the East Coast," the website says, and can process up to 180,000 barrels of oil per day.

The Delaware City Refinery is "one of the largest and most complex refineries on the East Coast," the website says, and can process up to 180,000 barrels of oil per day.

The Delaware City Refinery is "one of the largest and most complex refineries on the East Coast," the website says, and can process up to 180,000 barrels of oil per day.

The Delaware City Refinery is "one of the largest and most complex refineries on the East Coast," the website says, and can process up to 180,000 barrels of oil per day.

The Delaware City Refinery is "one of the largest and most complex refineries on the East Coast," the website says, and can process up to 180,000 barrels of oil per day.

The Delaware City Refinery is "one of the largest and most complex refineries on the East Coast," the website says, and can process up to 180,000 barrels of oil per day.