Metal pollution ‘not a threat’
Levels of heavy metal contamination in the Estuary are not; a health threat) says a study released by the Christchurch Drainage Board yesterday. | ' ( The study was made in response to (controversy about the level of heavy metal contamination after a report was released by the (Christchurch City Council about: eight years ago. . ' ■ .'1 "Some of the data on which' the report was based were unreliable,” said Dr Jim Robb, the board’s biologist. “It was. rubbish.” Heavy metals in the : 1 ii
environment were very important because in too high a concentration they could have an effect on animal and human life, he said.
The study looked at the heavy metal content in sediment in the Estuary and the Avon and Heathcote rivers, and shellfish in the Estuary.
Where the two rivers came ( into the Estuary were the places where the highest contamination was found. I
The board plans to con- ( tinue : monitoring the ( levels in the ponds and ' the rivers.
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Press, 13 April 1988, Page 9
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165Metal pollution ‘not a threat’ Press, 13 April 1988, Page 9
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