Creosote: 'No health risk to residents’

2011-07-14 00:00

THE creosote recovered from the Allerton stream, which is being flushed into a nearby municipal sewer after an accident on the N3 about three weeks ago, poses no health risk to residents.

The acting assistant director of the Department of Water Affairs, Manisha Maharaj, gave this assurance yesterday.

She told The Witness that various disposal options had been weighed before it was decided that the best environmental option was to treat the creosote that had been removed from the river on site and to flush it into a sewer.

“Scientific tests have found that the treated effluent is of a suitable quality to be discharged to sewer.

A site model was built to determine the potential risks to receptors and a human health risk assessment was conducted by the Geomeasure Group, groundwater and environmental consultants.

“This specialist study has revealed that there is currently no risk to human health,” she said.

Maharaj said most of the site has been cleaned up and affected storm water drains have been completely cleaned up.

However, a river health survey and water quality monitoring this week confirmed the creosote has affected the water quality and river health of the Allerton stream.

“The studies confirm that the quick action in isolating the Allerton stream and in reducing its flows were undoubtedly responsible for avoiding a more extensive impact,” said Maharaj.

She said the stream is already showing significant improvement.

“The continuing clean-up efforts are keeping the situation under control. But we continue to monitor the Allerton stream to ensure that effective rehabilitation takes place,” she added.

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