longwall mining planned in Convergence Party Area
Saturday, 18th November 2006
 

The following correspondence shows that plans

are afoot for compromising the ecosystems in the

Wyong area. A massive long wall coal 50m below

the surface just beyond National Park Boundaries

would have devestating consequences on the surface.

 

Legislative Assembly Hansard,

Tuesday, 26 September 2006, Proof

WALLARAH NO. 2 UNDERGROUND COAL PROJECT

 

Mr JEFF HUNTER (Lake Macquarie) [5.38 p.m.]: Tonight I raise community

concerns about the proposed Wallarah No. 2 underground coal project. In May this year

Wyong Areas Coal Joint Venture, the company exploring the Wyong area coal reserves,

announced it was moving forward with a plan to mine an area west of the F3 freeway in

the Wyong shire. The company said that it would seek approval to extract coal from

seams between 350 and 650 metres below the surface.

The coal would be mined over 42

 years from beneath the Dooralong

Valley and State Forest and brought

by a four kilometre underground drift

to the pit top at Tooheys Road near

the intersection of the Doyalson link

road and the F3.

The coal would be moved from the site by rail.

This announcement caused a great deal of concern amongst local residents, who subsequently

approached me for assistance.

The area, while currently in the electorate of Wyong, will form part of the redrawn Lake

Macquarie electorate at the election in March next year.

 

I have received a number of letters from concerned local residents and met with the

community group fighting the coalmine proposal, the Australian Gas Alliance [AGA].

That same group fought the Sydney Gas proposal to extract methane gas from this area. I

also attended the public meeting held on 27 August at Wyong to discuss the coal

proposal. Since then I have again met with the AGA and have received its "Submission

on the Impact of Longwall Coal Mining on the Proclaimed Wyong Water Catchment

Valleys (Dooralong and Yarramalong Valleys)".

 

Alan Hayes, the AGA spokesperson states in a letter to me:

Dear Jeff

Further to our various conversations and meetings I confirm acknowledgement of your

support to protect the public water resources drawn from the Wyong Water Catchment.

As you are aware, the Wyong valleys (Dooralong and Yarramalong) account for fifty per

cent (50%) of the water resource for the entire Central Coast of NSW. They were

proclaimed as a water catchment area in 1950, gazette number 153 of the Local

Government Act 1919.

 

Additionally, the Wyong River and Creek, Wyong catchment weir and the 'pump pool' of

the Mardi dam are located within the horizontal subsidence zone of the proposed coal

mine project. This horizontal subsidence zone also encroaches on the northern boundary

of Mardi dam and a portion of the dam itself, which was proclaimed water catchment in

1987.

 

 

There are also a number of international waders, recorded under the

Australian Government agreements with hina and Japan, whose fragile habitat is entirely

dependent upon the health of the water catchment river systems, and thirty-three (33)

endangered or threatened species of flora and fauna with in the catchment valleys.

 

Longwall coal mining not only poses a threat to the water supply, both surface and

subsurface, it also poses a threat to the habitat of the various endangered and threatened

species of flora and fauna.

 

To enable yourself to fully understand the disastrous impact that longwall coal mining

will have upon the water supply and the environment, a precises report is attached, with

extracted information from a report commissioned by the original lease holders that

supports the fact that the integrity of the surface and subsurface groundwater systems

could be compromised.

 

It is interesting to note that a report on the Jilliby Jilliby creek,

 

prepared in 2004 by River Care, in association with Hunter-Central Rivers Catchment

Management Authority, National Heritage Trust and the Department of Infrastructure,

Planning and Natural Resources, declared this water system as one of the most pristine in

New South Wales. This report also condemns the damage that will be caused by the

impact of longwall coal mining.

 

The letter goes on to say that should I require additional information, the AGA would be

happy to provide it to me.

 

The submission outlines the principal concerns about the coalmine,including: likely water

 contamination; potential loss of aquifers and water catchment river systems; and the

potential loss of 50 per cent of our drinking water catchment. It lists in detail the concerns

of the local community. I have forwarded this submission to the Minister for Planning,

Frank Sartor, and the Minister for the Environment, Bob Debus, and the Minister for

Water Utilities, David Campbell, and asked for meetings with them so that members of a

delegation from the AGA can put their case and their concerns about this proposed

coalmine. I share many of the concerns raised by the AGA and the valley communities. I

do not support any proposal that will threaten the water supplies of the Central Coast. I

look forward to meeting in coming weeks with Ministers Sartor, Debus and Campbell

and the AGA. I also look forward to a meeting on Thursday with the Minister for the

Central Coast, the Hon. Grant McBride, so that we can raise the local community's

concerns.

 

 

Mr GRANT McBRIDE (The Entrance—Minister for Gaming and Racing, and Minister

for the Central Coast) [5.44 p.m.], in reply: I commend the honourable member for Lake

Macquarie for his active involvement in this issue and his commitment to pursuing the

interests of the Australian Gas Alliance and the broader community. He is not yet the

member for that area, but he has made a strong commitment to resolving this issue. A

number of people who live in Jilliby Jilliby and the Dooralong and Yarramalong valleys

have told me that they are pleased about his commitment and his active pursuit to stop

long wall coalmining in the area. This is a big issue, but there is a bigger issue with

water.

 

Alan Hayes, accompanied by the honourable member for Lake Macquarie, will be

meeting with me at 12.30 p.m. on Thursday. The plan is to ensure that the local area and

the local community are protected from any negative consequences that may result from

long-wall mining. During the Legislative Council's budget estimates committee hearing

on Friday 1 September, I publicly opposed any mining proposal that would impact

negatively on the region's precious water supply. In reply to a question, I said:

 

I give a commitment that, as to long wall mining in the Dooralong and

Yarramalong Valleys, I will not accept any proposal that will have a

negative effect on the water catchment or the people of that area.

I am pleased to support the private member's statement of the honourable member for

Lake Macquarie's. As the Minister for the Central Coast, I will be working with the

honourable member and other members from that area to ensure that water and its

sustainability for the Central Coast are of paramount concern in the consideration of any

issues relating to the local catchment. I again congratulate the honourable member for his

interest in this area. We will be working together to ensure that we achieve the best

outcome for the people of the Central Coast.

http://www.cpa.org.au/garchve06/1278cult.html

The Guardian 21 June, 2006

Culture and Life

by Rob Gowland

Over the hills and far away

 
My wife and I were tickled pink the other day to receive a personal
computer-generated letter from our local State MP. He wasn’t anyone I 
was familiar with, nor was he anyone we had ever voted for (heck, we 
didn’t even know anyone who had voted for him).
 
 
He wasn’t our MP because of an election, but because of a 
redistribution — a singularly undemocratic way to be assigned a 
parliamentary representative.
 
 
We live in the Dooralong Valley on the NSW Central Coast. Together with 
the adjacent Yarramalong Valley, our area provides half the water 
catchment for Wyong and the Central Coast (a not unimportant matter in 
this time of continuous drought).
 
 
 
Last year the residents had to wage a determined struggle to prevent 
the area being subjected to intensive drilling for coal seam methane 
extraction.
 
If it had gone ahead, the hundreds of wells planned would have had a
catastrophic effect on the water supply for the Central Coast of NSW.
 
Now the South Korean-government-owned mining giant Kores (pronounced 
Kor-es) wants to build a huge coal mine under the valleys, with all the 
consequences of land subsidence, damage to the aquifer and disruption 
of the water catchment.
 
 
Last time, the valley residents were supported by Wyong Council, but 
now,thanks to a remarkably convenient redistribution, the two valleys 
have been severed from Wyong (their local urban centre) and shifted 
into the Lake Macquarie electoral area, which is literally "over the 
hills and far away" from the affairs of Wyong.
 
 
They are now part of an electorate largely comprising communities 
dependent on coal mining for a living.
 
 
No doubt it’s just a coincidence and has nothing to do with the 
influence of the mining lobby in Macquarie St.
 
 
A listing from the DEC website
 

Alteration of habitat following subsidence due to

longwall mining as a key threatening process -

fact sheet

'Alteration of habitat following subsidence due to longwall mining' has been

listed by the NSW Scientific Committee as a key threatening process

under the Threatened Species Conservation Act 1995.

 

 

 

What is longwall mining and how does it cause subsidence?

 

Longwall mining is an underground coal mining technique which involves

removing a portion of an underground coal seam. Longwall mining can

cause the land above the mined-out coal seam to destabilise and collapse

– this is known as subsidence.

 

The extent of subsidence is influenced by various factors, including the

width and depth of the longwall mine, topography, the type of overlying

rock layers, the design of the mine and the location of the mine. These

factors vary from site to site, so the amount of subsidence - and its

subsequent impacts - also varies.

 

What is alteration of habitat?

 

The specific area or environment in which a plant or animal lives is called

its habitat. A habitat provides all the basic requirements for survival.

Alteration of habitat refers to a change in the structure or function of

habitat, making it potentially unsuitable for the organism to live in.

Subsidence due to longwall mining has been recognised as causing habitat

alteration. Species and ecological communities that depend on aquatic

and semi-aquatic habitats are particularly susceptible to the impacts of

subsidence.

 

 

Subsidence due to longwall mining can cause deformation of ground

surfaces as well as cracking of valley floors and creeklines. This can affect

natural water flow regimes and water quality, depending on such factors

as the width of the crack, riverbed steepness, the riverbed material and

the presence of organic matter. Subsidence can also destabilise cliff faces.

In turn, these impacts can lead to the alteration of species habitats and

changes to the ecological function of communities. Effects can be

temporary or long-term. When water flows are altered, there can be

permanent effects on the functioning of ecosystems in localised areas,

which may be exacerbated in drought conditions.

 

Why list 'alteration of habitat following subsidence due to longwall

mining' as a key threatening process?

 

The NSW Scientific Committee in its final determination concluded that

alteration of habitat following subsidence due to longwall mining:

 

*          adversely affects two or more threatened species, populations or

ecological communities, or

 

*          could cause species, populations or ecological communities that are

not threatened to become threatened.

 

 


What species, populations and ecological communities are

particularly affected?

 

Threatened species and ecological communities are known to occur in

areas affected by subsidence due to longwall mining, and their habitats are

likely to be altered by subsidence and mining-associated activities.

Species include the following:

 

*          Blue Mountains water skink

*          giant dragonfly

*          broad-headed snake

*          Epacris hamiltonii

*          eastern pygmy possum

*          giant burrowing frog

*          stuttering frog

*          large-footed myotis.


Endangered ecological communities identified in the listing include the following:

*          Genowlan Point Allocasuarina nana heathland

*          O'Hares Creek shale forest

*          shale/sandstone transition forest

*          Newnes Plateau shrub swamp in the Sydney Basin Bioregion.


Subsidence associated with longwall mining can significantly affect the

water balance of upland or hanging swamps. Even though subsidence may

be detected within a few months of a mining operation, related changes in

vegetation can occur over a longer time period.

 

Mining subsidence can also destabilise slopes and escarpments. Changes

to cliff line topography can change the availability of roosting sites for

bats and nest sites for cliff-nesting birds.

 

What are the implications of the listing?

 

The Department of Environment and Conservation is required to

develop strategies for mitigating or managing the adverse effects of this

threatening process on our native wildlife. The mining industry and wider

community will be invited to contribute to the development of these

strategies.

 

Strategies may include:

 

*          reviewing existing policies, regulatory and non-regulatory regimes

*          preparation of impact assessment guidelines.


A number of actions are currently underway to address the

environmental impacts caused by subsidence. The actions

include the development of subsidence management plans

as required under the Mining Act 1992 (administered by the

Department of Primary Industries).

 

 

DEC is on the inter-agency committee that reviews these plans.

 

The effectiveness of these actions will be taken into account when DEC is

considering the need for a threat abatement plan.

<< Back To News Articles
Areas
Earthdream
Graffiti Hall Of Fame

Sporadical News Archives