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This report presents the results of a targeted assessment of
sediment quality at selected intertidal locations in Porirua
Harbour in February 2009. The primary focus of the
assessment was the southern end of the Onepoto Arm
where sediment contamination is believed to be greatest.
However , intertidal sediment sampling was also undertaken
at the mouths of the 'Onepoto' and Browns streams, and duck
Creek. In addition, sediment samples were collected from the
lower reaches of several streams discharging into the harbour
that receive urban storm water inputs.