Author(s)

S.J. Priestley

Abstract

Recent dredging operations in the port of Auckland, New Zealand were preceded by detailed environmental impact assessments. One operation was completed in 1992 for the removal of 270,000m3 of marine mud from the commercial port basins using a trailer suction dredger. Another operation was completed in 1993 for the removal of lO^OOOm^ of marine mud from a small enclosed boat harbour using a clam shell dredger. As part of the approval process, a compliance water quality monitoring programme for turbidity and suspended solids released by the dredger was conducted during both dredging operations. This included intense monitoring during a full tidal cycle and weekly up current and down current monitoring. The results of both compliance monitoring programmes concluded that the environmental impact of the dredging operations was minimal. 1 Introduction The introduction of the Resourc

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