1.   The state requires that oil companies seal a well with cement plugs once production has stopped, in order to prevent contaminants from escaping.

2.   The wells are sealed to protect against infiltration.

3.   The wells have been sealed, and the polluted water is being flushed through a treatment plant to remove the toxics.

4.   Petrobras Chief Executive Henri Philippe Reichstul said Thursday there was no spill from the accident and that all the undersea oil and gas wells had been sealed.

5.   Reichstul said the oil and gas wells themselves were sealed before the rig was evacuated and could not leak.

6.   Reichstul said Thursday there was no spill from the accident and that all the undersea oil and gas wells had been sealed.

7.   Zulkifli hoped that the Geological Department will seal the well so that the area around it is safe for children to play again.

8.   The government has set up a team to investigate the deaths and the presence of arsenic in water, and has ordered wells sealed in affected areas.