Enlarge By Patrick Semansky, AP Homeland Security chief Janet Napolitano and Adm. Thad Allen discuss oil spill cleanup as storms loom. CONTAINMENT EFFORTS CONTAINMENT EFFORTS SHUTTING DOWN THE WELL SHUTTING DOWN THE WELL CLICK HERE to see how the cap and relief well work to stop the oil flow.

BP has spent $2.65 billion in its effort to cap a gushing oil well and clean up a growing slick in the Gulf of Mexico , the company reported Monday in a filing with the Securities and Exchange Commission.

Drilling of a relief well, intended to interrupt oil flow from the ruptured well, reached 16,770 feet, 1,230 feet shy of the goal, BP said Monday. But drilling has slowed as engineers perform tests to determine the precise location of the damaged well. The relief well will intercept the original well at 18,000 feet and is scheduled to be complete in mid-August.

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BP is capturing nearly 1 million gallons of oil a day in two containment systems. The company has begun installing a third system that could double the amount of oil captured by the first two systems. The new system could be disconnected quickly if a hurricane approaches, the company said. The current system requires five days to disconnect, said Coast Guard Adm. Thad Allen, the federal government's incident commander.

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The new system may be delayed by choppy seas, Allen said. So far, the water is calm enough to proceed, he said.

Tropical Storm Alex, which is moving over Mexico toward Texas, has churned up the water in the Gulf, Allen said.

Meanwhile, huge slicks of oil moved toward the Gulf shore. "We have seen the oil change direction," Allen said Monday.

The oil, which had been heading east toward Florida, is now entering the Mississippi Sound and Louisiana's Chandeleur Islands, he said.

Mississippi reported tar balls on several of its beaches, including Belle Fontaine beach, the mouth of the Davis Bayou and Deer Island in Jackson County.

Gulfport, Miss., expects oil to come ashore today, city spokesman Ryan LaFontaine said. The city has asked federal and state authorities for permission to use absorbent boom to protect inland waterways and harbors, he said.

The federal government late Monday expanded the area of the Gulf closed to fishing from 78,597 square miles to 80,228 square miles. About a third of the Gulf is closed to fishing. Fishing waters are closed from the Port of Gulfport east to the county line, LaFontaine said.

"The timing of this could not be worse," LaFontaine said.

The city's 62nd Annual Mississippi Deep Sea Fishing Rodeo begins Thursday. Although the carnival will go on as planned, fishing will be limited, he said.

"It's hard to have a fishing rodeo if you can't fish," LaFontaine said.