Earlier, the State Oceanic Administration had asked ConocoPhillips to finish the seabed cleanup by early this week and complete the whole cleanup by Aug. 31.

FORBES: ConocoPhillips In Trouble In China

An official in the State Oceanic Administration told Chinese official media that heavy winds on Monday had broken up the spill and dispersed it more widely than had previously been reported.

BBC: China oil spill after pipe blast 'worse than thought'

The State Oceanic Administration said this week that it asked the company to give a comprehensive assessment report on the cleanup process of the oily mud with details on the spill area, including the cleaned and to-be-cleaned parts of the bay, China Daily reported.

FORBES: ConocoPhillips In Trouble In China

Portland State funded the study along with Oregon Sea Grant, a program of the National Oceanic and Atmospheric Administration.

CNN: Researchers find caffeine in waters off Oregon