Penrhyn Estuary – Mercury
In September 2003 a Clean Up Notice was served on Orica P/L for what was reportedly the largest chemical spill in Australia. This spill included Orica contaminated groundwater and surface water flowing into the Penrhyn Estuary. In late 2004 a fishing ban was issued by the Department of Primary Industries (Fisheries). Also see Sydney Morning Herald report of 2005 by Gibson and Huxley.
Penrhyn Estuary has been part of major rehabilitation works conducted by Sydney Ports Corporation as part of the Port Botany Expansion. Monitoring reports are available here.
Testing for heavy metals and contaminants occurred as part of the Port Botany Expansion Environmental Impact Statement in 2003 and in a report to Meeting 6 of the Port Botany Expansion Community Consultative Committee 5 of the 12 mercury exceedences were reported from the estuary.
Penrhyn Estuary (L-R:before construction near Springvale Drain outlet; aerial view before construction; Penrhyn Plan of Works; Post Construction – Big Island)