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Mill Park/South Morang - Northern Melbourne

Plenty River Catchment

University Hill Development

"a team effort between developer MAB Corporation and a proactive local authority (City of Whittlesea)" Planning Minister Rob Hulls PIA Victoria Division Awards for Planning Excellence 2005.

November 16, 2006: The development at the head of a gullyline into the Plenty River. If this site gets inundated with rain, huge quantities of turbid construction water will probably be released into the Plenty River. Sediment can be lethal to native fish species. Of particular concern is the endangered Macquarie Perch which has been recorded in the Plenty River.

2005 image of area of concern. Major area of concern is marked with red dot at the top of gully/drainage line which feeds into the Plenty River. Points 1 and 2 already suffering from sediment.

November 16, 2006: Sediment already occurring just downstream from development. Point 1.

November 16, 2006: Further sedimentation of gully downstream of development.

A closer image of the same google earth image. The area in the centre of screen will apparently become a wetland after construction is completed.

Pollution of this portion of the Plenty River is already occurring. A large rainfall event could see sediment tainted water washed into the Plenty.

November 16, 2006: Pollution (red area of previous image), most likely caused by construction sediment being washed down gully in low lying area adjacent to Plenty River.

November 16: construction site

 

November 16: Note massive piles of soil ready to wash away in heavy rain.

November 16: One hopes that this construction site water will not be pumped into the main gully leading into the Plenty River.

November 16: Turbid water draining main gully just before entering low lying area adjacent to Plenty River.

November 16: Sediment fans have occurred during wet weather in low lying area adjacent to Plenty River.

November 16: The Plenty River. The polluted area lies just to the far left of this image.

November 16, 2006: The Plenty River just upstream from the main gully discharge point.

November 2006: The development facing east, showing a large amount of sediment displaced on site. The old 'Janefield Colony' buildings can be seen in the background. Much of the area seen in this photo will eventually be wetland.

November 2006: Excavation works over main gully which drains the site. Note amount of displaced soil ready to wash down the gully.

November 2006: Another view of the massive sediment pile, sitting at the top of drainage line.

November 2006: More rock sediment control at bottom of site gully. Note eroding batters and displaced soil ready to wash away with rainfall.

November 2006: Culvert near the bottom of the drainage line where water will leave the site and enter main drainage line.

November 2006: Looking back up the drainage line.

 

November 2006: Looking down the drainage line. Two rock barriers are supposed to slop sediment from entering drainage line.

November 2006: The first rock 'wall' already starting to fill with displaced sediment.

November 2006: The bottom 'wall', clearly showing where sediment tainted water has washed up against. The centre of the 'wall' had actually partly washed away at this point.

November 2006: Turbid water making its way towards the Plenty River. Has this development been referred to Environment Australia?

Sediment kills native fish

Macquarie Perch threatened with extinction