Biased information

GHD provided summaries of the four short listed sites to the WC and forum members to help them identify a preferred site. The summary of the site advanatges and disadvantages provided by the WC was biased. All the advantages of the DEC site and the disadvantages of the O’Connor site were exaggerated.

Information that is biased in favour of the DEC site or against the O’Connor site is shown in red. There is no information biased in favour of the O’Connor site or against the DEC site. The data is from the tables in appendix C of the Multi Criteria Analysis by GHD. For ease of reference the dot points have been numbered.

Site Advantages Disadvantages
DEC Land 1. Close to Mundaring –Kalgoorlie pipeline.
2. Opportunity for positive contribution to heritage values as part of the ongoing story of Mundaring weir and the goldfields water supply.
3. Much of the site is degraded and contains introduced species, impacts on flora and fauna would be minimal.
4. Good or acceptable performance with respect to flexibility and operability of the site.
1. Significant heritage values, includes buildings that would be either lost or relocated, so the opportunity to interpret the history of the settlement in the original location would be lost.
2. Adjacent to community facilities, including Fred Jacoby Park, Kookaburra Outdoor Cinema, Forest Discovery Centre.
3. There would be a risk of disrupting indigenous artefacts.
4. A number of walking and cycling trails pass through site, these may need to be rerouted.
O’Connor Site 1. No existing European Heritage values.
2. Opportunity for positive contribution to heritage values as part of the ongoing story of Mundaring Weir and the goldfields water supply.
3. Large site available, high level of flexibility.
4. Close to Mundaring pipeline.
1. Would require clearing of good quality vegetation.
2. Least disturbed site and therefore there is a possibility of encountering archaeological materials during earthworks.

3. Two private properties (including residences) adjacent to WTP boundary, plus other private property nearby.
4. A number of walking and cycling trails are adjacent to this site, these may need to be subject to aesthetic impacts or may need to be rerouted.5. Substantial lengths of additional pipeline required.

DEC Site – Advantages and bias

1. Close to Mundaring –Kalgoorlie pipeline.
BIAS: Four pipelines will have to be buried across Jacoby Park and Mundaring Weir Rd.
The O’Connor site is beside the pipeline and on the same side of Mundaring Weir Rd as the pipeline.

2. Opportunity for positive contribution to heritage values as part of the ongoing story of Mundaring weir and the goldfields water supply.
BIAS: This will not be the case as the WTP will be perched on 12-15m high retaining walls with no space or access for any positive contribution.

3. Much of the site is degraded and contains introduced species, impacts on flora and fauna would be minimal.
BIAS: The pipeline must cross Jacoby Park adjacent to one of the largest and most important Baudin’s Black Cockatoo roosting sites in the Southwest. (500 birds)
The description is not a description of the vegetation but the ability of the native vegetation to recover using the Keighery scale. This scale uses common vocabulary in a specific way to identify and protect poorly represented ecosystems. Its exclusive use to describe an attractive cultivated environment of heritage significance in a village setting is totally inappropriate. The mix of exceptionally large native trees and introduced species reflect the history and importance of the site. The National Trust values this environment and there is no intention that the site be returned to Natural Forest.
These same criteria would describe Jacoby Park as degraded.

4. Good or acceptable performance with respect to flexibility and operability of the site.
BIAS: The site will have to be cut into the slope and retaining walls 12-15 m high will have to be constructed to the front and back of the site. The chlorine buffer extends into Jacoby Park. The site has no flexibility.
Access to the site is via a steep curve with no provision for heavy vehicles to turn towards Kalamunda. On 25 November 2009 the WC did not have even a sketch plan of the layout.

DEC Site – Disadvantages and bias

1. Significant heritage values, includes buildings that would be either lost or relocated, so the opportunity to interpret the history of the settlement in the original location would be lost.
BIAS: The National Trust has listed this site as part of the Mundaring Weir Forestry Settlement. This listing recognizes that the buildings, homes and cultivated environment record the historic function of the site in managing the forest ‘to maintain water quality’

2. Adjacent to community facilities, including Fred Jacoby Park, Kookaburra Outdoor Cinema, Forest Discovery Centre.

BIAS: The enhancement of the community by these facilities will be severely compromised and the Kookaburra cinema would probably close.

3. There would be a risk of disrupting indigenous artefacts.

4. A number of walking and cycling trails pass through site, these may need to be rerouted.
BIAS: This vicinity has the highest concentration of walk and cycle trails in WA. The Perth Hills National Parks Centre (PHNPC) is 80m from the DEC site. The DEC site extends into 200m Bibbulmun track reserve where the reserve passes through the PHNPC.

5. Omitted information: The impact on the view from Mundaring Weir Rd and Allen Rd was no0t considered in the selection process. It will be overwhelming.

O’Connor Site – Advantages.

There was no bias in the report in favour of O’Connor

1. No existing European Heritage values.

2. Opportunity for positive contribution to heritage values as part of the ongoing story of Mundaring Weir and the goldfields water supply

3. Large site available, high level of flexibility

4. Close to Mundaring pipeline

O’Connor Site – Disadvantages and Bias

1. Would require clearing of good quality vegetation.
BIAS: The plant can be located on land the GHD assessment describe as Degraded/Cleared /Planted Vegetation. The 1986 EPA act permits the clearing of this land provided an offset is agreed.

2. Least disturbed site and therefore there is a possibility of encountering archaeological materials during earthworks.
BIAS: The site has no European or Aboriginal heritage. See review by Wanati.

3. Two private properties (including residences) adjacent to WTP boundary, plus other private property nearby.
BIAS: here are no private properties adjacent to the site. Private properties are nearer to the DEC site.

4. A number of walking and cycling trails are adjacent to this site, these may need to be subject to aesthetic impacts or may need to be rerouted.
BIAS: The 39.5 ha that was available at this site is adjacent to the walk trails, but the concept plan the plant is 150m from the trails behind a reasonable screening of trees

5. Substantial lengths of additional pipeline required.
BIAS: No new pipeline is required. The contingency pipeline included in the original plan is not necessary and will not be built. The existing pipeline can be redirected to the beginning of the plant

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