VIDEO: Air still unsafe in South Jersey after chemical spill

Schools remain closed today and about a hundred homes are off-limits to residents due to rising unsafe chemical levels in the air from a train derailment last week. The chemical, vinyl chloride has not yet been removed from the ruptured tank car. Dozens of people were treated in hospital with breathing difficulties in the hours after the crash on Friday. 

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VIDEO: 18 treated for chemical exposure after New Jersey train derails

As if the region hasn't had enough to contend with post-Sandy, now residents of three southern New Jersey towns are facing chemical exposure after a bridge collapsed today, causing a freight train to derail.

Three train cars fell into a creek in Paulsboro in Gloucester County at about 7 a.m. said officials. At least one of the cars is believed to contain vinyl chloride, a potentially hazardous chemical. Exposure can cause dizziness and harm breathing. At least 18 people have been treated for exposure.

Raw Footage from the Associated Press: