AGENDA - Sunshine Coast Council

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Strategy and Planning Committee Agenda 16 February 2011 loss of marine plants and fish habitats, therefore providing an opportunity to enhance, rehabilitate and restore the identified coastal wetlands. c) Areas of coastal biodiversity significance The proposal has been determined to not cause any significant adverse impacts to the coastal biodiversity. The wetlands adjacent to Bells Creek are required to be rehabilitated and largely left in a natural state. Marine plant offsets are required to compensate for the removal of some plants. Water quality is to be managed to current best practice prior to discharge to the lake with the waters in the lake achieving a 22 day turnover, and recreational boating activity is limited mostly to the waters north of Bells Creek as water depths to the south are very shallow and as such precludes any deep drafted boasts. Marine zones may be implemented during 2012 to manage recreation activities on Pumicestone Passage as part of Council’s Waterways and Coastal Management Strategy 2010 – 2020. d) Areas of value to Indigenous Traditional Owner There are no known areas of value to Indigenous Traditional Owners located on the subject land. It is noted that some areas of cultural significance are located with the adjacent esplanade (shell scatters and scar trees). These areas have been identified and are to be maintained in their current state. e) Areas of State significance (cultural heritage) Refer to item above. f) Public access to and along the foreshore and public useability of coastal waters due to the construction of a lock and weir or infrastructure associated with supplying water to a non-tidal artificial waterway The proposed infrastructure associated with the lake and marina will not preclude public access to the foreshore of the proposed lake, marina or adjacent natural waterways (Bells Creek, Pumicestone Passage). g) Identified environmental values and water quality objectives under the Environmental Protection (Water) Policy 2009 Should this proposal be supported, detailed water quality objectives are included as conditions. These objectives are consistent with those of the Environmental Protection (Water) Policy 2009. h) Vulnerable areas for precursors to algal bloom Land based activities and development that alter the natural hydrological regime, including groundwater levels and composition and surface water run-off, often result in increased loads of nutrients to coastal waters, that cause algal blooms. The scale and type of development being proposed has the potential to supply nutrients of concern to the immediate coastal areas if best practice water quality management is not implemented. Page 30
Strategy and Planning Committee Agenda 16 February 2011 This means: • no lowering of the water table where acid sulphate soils are present; • avoidance or minimisation of the export of nutrients from the site through either surface or groundwater; • no disturbance of coastal wetlands; • the maintenance and enhancement of riparian vegetation; and • incorporating best practice stormwater quality management, including best practice water sensitive urban design and sediment controls. The applicant has provided water quality modelling for the proposed development that demonstrates compliance with these minimum expectations. In circumstances, although limited, where water quality in either system deteriorates as a result of urban conditions, there is a three tiered risk minimisation approach to the waterways associated with this development. The first tier involves flushing systems to be installed to achieve turnover in the lake water over a period less than 30 days and best practice stormwater management. The second tier involves the preparation of a detailed water quality management plan as part of the first stage of subdivision. This management plan will include modelling that demonstrates the minimum water quality objectives stated in the Environmental Planning (Water) Policy 2009. The third tier of risk minimisation is the Lake and Tidal Canal management plans. These management plans will include a rigorous testing regime, which will identify when and if there is any deterioration in water quality conditions and a mitigation plan which identifies actions to be undertaken to remedy conditions if necessary. With respect to water quality standards and monitoring of water quality, conditions have been included that require the developer to comply with detailed water quality targets and prepare a water quality monitoring program. The water quality monitoring program is to commence after the first stage of the lake/canal/marina system has been constructed and is to continue until the developer is no longer responsible for the maintenance of the Southern Lake system. The exact location of monitoring sites is yet to be determined, but conditions are included that require: a) a minimum of 2 monitoring sites for each stage of the lake/canal and marina; b) one site located in Lamerough Canal near the entrance to the marina; and c) one site located at the entrance of Lamerough Canal. Testing is to be carried out at each of the above mentioned sites on a monthly basis and submitted to Council. The above assessment has established that the proposed development satisfies the relevant criteria of the South East Queensland Regional Coastal Management Plan 2006. Further, the Department of Environment and Resource Management as a Concurrence Agency has also given due regard to the Plan in its approval of the proposal. Page 31
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AGENDA - Sunshine Coast Council

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