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

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

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

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.

An equipment failure causing the Delaware City Refinery to emit sulfur dioxide above permitted levels is expected to take two ...

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 ...

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.