Tarrawonga MOD 7 – old fashioned water grab


Submissions to the NSW ‘Planning’ Dept were due yesterday 8.6.2020 to respond to a Whitehaven coal Environmental Assessment known as MOD 7. MOD 7 proposes to extend the mine pit right up to the Namoi Alluvium and remove the current planning approval requirement to construct a “Low Permeability Barrier” that protects groundwater from flowing into the open cut coal mine. In its own words MOD 7 said;

The Modification proposes mining of coal within 200 m of the Upper Namoi alluvium (but would avoid mining the Upper Namoi alluvium itself). This would allow TCPL to maximise the extraction of economic coal without the requirement to construct the infrastructure described above (i.e. the low permeability barrier, Goonbri Creek diversion, road and electricity transmission line realignments). The Modification would result in forgoing coal extraction from some areas permitted under PA 11_0047 (i.e. underlying the Upper Namoi alluvium).” 1

The adjacent image shows that the pit may intercept the Namoi alluvium along a significant portion of the pit boundary, potentially leading to huge unregulated inflows. This is precisely the sort of thing that the Aquifer Interference Policy that was introduced but not activated by the coalition government in 2012 was meant to address.

MOD 7 envisages a network of new pipelines, that with existing water transfer arrangements 2, will enable the movement of unregulated Namoi alluvium water to or from other mine sites such as Vickery and Maules Creek including water from sites outside the water zone of origin.

Basically, MOD 7 has all the hallmarks of an old fashioned water grab of unregulated pit inflow, or the so called “passive take” relied on the recent Maules Creek groundwater investigation. The modification is designed to literally remove all barriers to passive take and to go one step further, building a network of pipelines to facilitate the use of pit inflows all around the region.

1  Whitehaven Coal, Tarrawonga coal mine – Life of Mine Modification Report: Executive Summary https://majorprojects.planningportal.nsw.gov.au/prweb/PRRestService/mp/01/getContent?AttachRef=MP11_0047-MOD-7%2120200428T070726.782%20GMT

Hydro engineering and Consulting, Tarrawonga coal mine – Life of Mine Modification Report: Surface Water Assessment and Site Water Balance https://majorprojects.planningportal.nsw.gov.au/prweb/PRRestService/mp/01/getContent?AttachRef=MP11_0047-MOD-7%2120200428T070730.897%20GMT