A black sticky oily substance is shown along the beach at the Texas City Dike near the barge spill cleanup site Sunday, March 23, 2014 in Texas City. Officials say the material is consistent with how ... more 
A black sticky oily substance is shown along the beach at the Texas City Dike near the barge spill cleanup site Sunday, March 23, 2014 in Texas City. Officials say the material is consistent with how oil could appear when it impacts beaches. However it would have to be analyzed to determine its origin. A barge that once carried some 900,000 gallons of heavy tar-like oil was cleared Sunday of its remaining contents, a day after the vessel collided with a ship in the busy Houston Ship Channel and leaked as much as a quarter of its cargo into the waterway. (AP Photo/Houston Chronicle, Melissa Phillip) less 
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Associated Press | Photo By Houston Chronicle, Melissa Phillip
Sun, Mar 23, 2014 6:12 PM EDT