There will also be three information centres along the desalination pipeline route,

as soon as a lease can be signed.

After Mr Rees door-knocked the area on Tuesday, workers followed yesterday and today with information about the type of work happening.

Residents have complained about contractors covering Prince Charles Parade in sand, silt from a Silver Beach construction site escaping into the bay and possible vibrations from sheet piling operations due to start next week.

Mr Rees's spokeswoman said Sydney Water would install steel posts to hold the failed silt curtain above the water line to prevent further debris entering Botany Bay.

In response to a local suggestion, a special type of netting called geo-textile fabric will be put on Silver Beach to stop construction fill mixing with the sand.

People living closest to the sheet piling will also be offered alternative accommodation.

``Vibration experts will be in Kurnell to monitor the work,'' the spokeswoman said.

``If vibration exceeds guidelines, the work will be stopped.''

Sutherland Shire Council released a statement saying it had told the Government the plant was a bad idea.

``The council has always opposed the construction of a desalination plant on the Kurnell peninsula and the latest problems being experienced by residents are yet another reason why,'' the council's desalination working party chairwoman, Councillor Lorraine Kelly said.

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NSW Greens MP John Kaye said the latest problems were positive proof that the construction project was a threat to the bay.

``The construction consortium has not been able to lay the first of two thousand pipeline links without leaking a plume of silt into the shallow waters of the bay,'' Dr Kay said.

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