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NEW ORLEANS (AP) — BP's work on capping the Gulf of Mexico gusher was frozen Wednesday after the federal government raised concerns the operation could put damaging pressure on the busted well that could make the leak worse.
An administration official, who asked not to be identified because of the sensitivity of the talks with BP, said the government was acting out of "abundance of caution" and didn't want potentially dangerous pressure tests on a tighter containment cap that has been placed over the well to go ahead until BP answers questions about possible risks.
At the same time, BP on its own halted the drilling of two relief wells that are designed to be a more permanent solution to plug the well.
The delays were a stunning setback after the oil giant finally seemed to be on track following nearly three months of failed attempts to stop the spill, which has sullied beaches from Florida to Texas and decimated the multibillion dollar fishing industry.
The administration official said Energy Secretary Steven Chu, U.S. Geological Survey chief Marcia McNutt and other government scientists met with BP Tuesday in Houston and had a number of questions about the plan to test the integrity of the well. Chu and other officials want to ensure that putting downward pressure on the well will not cause further leaks, the official said.
"Our basic position was, if you can give us the answers we need ... then go ahead," the official said. Until then, "they can't go forward."
The official stressed that the government was acting out of "an abundance of caution" and still hopes the temporary cap can be placed on the well.
The new, temporary well cap had been seen as the best hope since April of stopping the geyser. Work on a permanent fix, relief wells that will plug the spill from below with mud and cement, also was halted.
Oil continued to spew nearly unimpeded into the water, with no clear timeline on when it would stop. BP shares were down 2.5 percent in afternoon trading in London after recouping some of their oil spill losses earlier this week, when the cap project seemed to be moving ahead.
"We want to move forward with this as soon as we are ready to do it," said Kent Wells, a BP senior vice president.
BP had zipped through weekend preparations for getting the 75-ton cap in place and undersea robots locked it smoothly into place Monday atop the well, raising hopes the gusher could be checked for the first time since the Deepwater Horizon rig leased by BP exploded April 20, killing 11 workers.
Wells said that it was the government's call late Tuesday to re-evaluate plans for testing the new cap, and that plans were on hold for at least 24 hours. Federal officials and the company will re-evaluate the best path forward after that time period.