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Parliamentary Questions


Question Without Notice No. 1067 asked in the Legislative Council on 1 November 2018 by Hon Diane Evers

Parliament: 40 Session: 1

GREENPATCH DEVELOPMENT — WASTEWATER TREATMENT PLANT — DALYELLUP

1067. Hon DIANE EVERS to the minister representing the Minister for Planning:

I refer to the minister's response to my question without notice 1053 asked on 31 October.

(1) Is the minister aware that approximately one-third of the proposed Dalyellup Greenpatch area earmarked for houses in the Greenpatch structure plan falls inside the recommended odour buffer area for the Dalyellup wastewater treatment plant in the report tabled on 16 May 2018?

(2) Is the minister aware that the odour emissions rates used for modelling in the report were old projections rather than the plant configuration and measurements at the time of the report?

(3) Does the minister consider that an investigation into projections and a review of the buffer based on current measurements is warranted; and, if not, why not?

(4) Given that the Environmental Protection Authority in its submission on the wastewater treatment plant buffer amendments to the greater Bunbury region scheme in 2011 suggested the modelling was not sufficiently conservative to capture the full extent of odour impacts, why was the final odour buffer area in the greater Bunbury region scheme made significantly smaller than that recommended in the report?

Hon STEPHEN DAWSON replied:

I thank the honourable member for some notice of the question.

(1) The Western Australian Planning Commission will be responsible for the assessment of the Greenpatch structure plan.

(2) The projections were deemed suitable to inform the amendment. Correspondence to the Department of Planning, Lands and Heritage and the Western Australian Planning Commission following advertising confirms that the buffer was suitable.

(3) The Western Australian Planning Commission will consider the appropriateness of the buffer and whether proposed housing encroaches on the buffer in its consideration of the Greenpatch structure plan.

(4) The special control area 4 buffer area, as advertised, being the current alignment, was considered by all relevant agencies as part of the greater Bunbury region scheme amendment process. Through the amendment process, the then Department of Environment and Conservation and Water Corporation agreed that the buffer is acceptable, and that the Water Corporation would monitor emissions to ensure ongoing compliance with the Environmental Protection Act 1986.