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July 18, 2010 10:33 PM

Oil seep near BP well could mean trouble for relief well plans

Scientists monitoring BP's unstable Deepwater Horizon oil well have detected oil or natural gas seeping from the seafloor nearby and "undetermined anomalies" near the wellhead — signs that the well may have suffered damages that will complicate technicians' abilities to shut off the flow permanently. Retired Coast Guard Adm. Thad Allen revealed the findings in a letter demanding that BP step up monitoring and prepare to reopen a containment cap that has sealed the well since Thursday.

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