The company responsible for an oil spill off the Kimberley coast says a fourth attempt to plug the leak will take place on Thursday.

A third attempt to plug the eight-week-old Timor Sea oil leak failed yesterday, prompting conservationists to call for Federal Government intervention.

Greens MLC Robin Chapple and John Carey from the Pew Environment Group today criticised the company's decision to knock back earlier offers from Woodside for help to fix the problem.

Mr Chapple acknowledged that work to plug the leak was an extremely difficult job but said the whole episode highlighted the need for the Federal Government to play a more active role in such serious events.

Oil has been flowing into the ocean from the damaged well-head at PTTEPAustralasia's Montara field at an estimated rate of 400 barrels a day since August 21.

The West Australian

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