Published: Jul 26, 2010 9:17 PM EDT
Updated: Jul 26, 2010 6:05 PM EDT

NEW ORLEANS, Fla. - Clean up operations resumed Monday after Tropical Depression Bonnie left the Gulf. Skimming boats resumed their jobs after being forced to return to port last week due to fears the storm would put the crews in danger.

Retired Coast Guard Admiral Thad Allen said officials will spend Tuesday determining how Bonnie affected the oil spill. Oil may have traveled into the Mississippi Sound and officials are checking to see if the boom that protected the marsh area stayed in place.

Experts hoped the storm would break up some of the visible oil on the ocean's surface, but the winds were not strong enough to do so.

Rear Admiral Paul Zukunft said aerial surveillance of the Louisiana coast on Sunday found just one patch of emulsified oil, appearing as a milky strip in the water.

Since BP's well was capped July 15, the amount of oil skimmed from the surface has plunged from just over 1 million gallons a day to about 2,400 gallons on Thursday.