(Nbos) Other Options
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441 POSSIBLE OPTIONS TO ADDRESS AIMS AND OBJECTIVES 54 Data for the effectiveness of the options is derived from the Total Potential scores, and is outlined in Appendix E. Information regarding timeframe, costs and the practicality / legal scale was determined through the experience of the study team and verified through the consultation process with the individual Councils. The costs reflect a 1 - 2 order of magnitude difference from “high” to “low”. Typically, higher cost options would require further investigations and approvals by Council before proceeding. The community support scale is derived from direct community feedback on the options, as determined through returned questionnaires (also detailed in Appendix E). Potential management options have also been considered based on whether they involve ‘no regrets’ actions or not. ‘No regrets’ refers to options that should be implemented irrespective of the specific outcomes to the Georges River Estuary, as they generally are beneficial to the broader community, and involve little or no trade-offs. These options involve on-going compliance, education and further investigations, aimed at improving resilience to threats imposed on estuarine health, and increasing preparedness and decision-making ability for broader environmental risks now and in the future, such as climate change. In general, implementation of all ‘no regrets’ options should be pursued as part of normal day-to-day duties by individual Councils and other relevant management authorities. Following a first pass evaluation of the potential management options, the stakeholders provided further input regarding existing management initiatives and suggestions for possible additional actions (these are separate to those assessed and documented in Appendix E). Subsequently to this, and as a final step, the list of possible management options was validated and rationalised by GRCCC and OEH staff, to ensure that the options were targeted and achievable as much as possible. Through this process, a number of options were combined and/or reworded, while the final prioritisation ranking was also validated to ensure that overarching goals of the GRCCC and the NSW Government were being met. 5.2 Prioritisation of Options Using the multi-criteria rapid assessment process described above, possible Management Options have been separated into the following categories: Best Management Options (BMOs) • Tier 1 options Next Best Options (NBOs) • Tier 2 options Other Options • Tier 3 options K:\N2099_GEORGES_RIVER_EMP\DOCS\R.S1197.001.01.FINAL_PLAN.DOCX 442 POSSIBLE OPTIONS TO ADDRESS AIMS AND OBJECTIVES 55 All ‘Best Management Options’ (BMOs), ‘Next Best Options’ (NBOs) and Other Options are presented in Table 5-2 to Table 5-10 for each of the Management Aims. The ‘Best Management Options’ are those highest priority options that are considered to create the best outcomes for the Georges River Estuary without undue constraints such as costs, practicalities of implementation and acceptance by the community. The Best Management Options also included a large number of ‘No Regrets’ actions. The BMOs also primarily targeted the aims that were considered to have ‘intolerable risks’. As discussed in Section 4.1, Risks to Estuary Health would be intolerable if the following aims were not addressed: A: Water quality; B: Aquatic and Riparian Habitats; D: Land Use Planning and Development; E: Bank Erosion and Sedimentation; and H: Climate Change and Sea Level Rise. Implementation of the BMOs will satisfy 9 of the top 10 objectives. The only top 10 objective not addressed is Objective A5 (Strive to protect undeveloped areas of the broader catchment that act as a buffer to water quality). The ‘Next Best Options’ are those options that are still likely to have notable and positive outcomes for the estuary, but did not score as highly as the Best Management Options (generally due to some constraints on costs, timing and/or practicality). Many of these options are longer term initiatives or should be progressively and continuously updated, e.g. community engagement activities. Generally the Next Best Options have more of a supporting role, and as such can be considered complementary to the BMOs and should be implemented as suitable opportunities arise. The ‘Other Options’ not considered to be either BMOs or NBOs would still generally have some benefit to the estuary, but their relative value is generally considered to be lower than the BMOs and NBOs, or there are likely to be some challenges for implementation in terms of costs, practicalities and community endorsement. Nonetheless, these options should still be considered in the context of holistic estuary management, and reconsidered as part of the regular Plan review process to determine if conditions or circumstances have changed that would make them more attractive. K:\N2099_GEORGES_RIVER_EMP\DOCS\R.S1197.001.01.FINAL_PLAN.DOCX 443 POSSIBLE OPTIONS TO ADDRESS AIMS AND OBJECTIVES 56 Table 5-2 BMOs, NBOs and Other Options (Water Quality) Aim A: Water Quality: To optimise water quality within the Georges River Objectives Estuary and its tributaries addressed and Priority H M L Best Management MA2. Councils to incorporate Water Sensitive Urban Design A1, Options (WSUD) principles in redevelopments of urban areas, including A2, public and private development, through the updating of existing A6 and preparation of new Development Control Plans (DCPs) 3 MA3 . Retrofit appropriate new WSUD devices in existing urban A1, areas including measures such as artificial wetlands, bioretention A6, systems, vegetated swales, and channel naturalisation E2 MA4. Undertake adequate and appropriate maintenance of A1, existing WSUD devices to maintain their effectiveness, in particular A6 GPTs and other stormwater quality improvement devices. MA6. Enforce implementation and maintenance of effective A1, sediment controls during the subdivision and building phases of all A2, developments (including infrastructure projects) by undertaking A6, regular audits of developments during construction E2 MA8. Continue the GRCCC’s Riverkeeper Program to remove gross A4, pollutants from foreshores and waterways, help minimise the impact A6 of, and monitor incidences of, illegal dumping (on land and in water) MA10. Councils to adopt WSUD action plans based on a A1, comprehensive framework of institutional capacity and assessment A2, A6 MA15. Liaise with Sydney Water when sewers are observed to be A1, causing water quality problems A3 Next Best Options MA5. Develop and implement education programs aimed at A1, increasing community awareness regarding ‘source control’ of A4, gross pollutants, nutrients and other pollutants A6 MA7. Acknowledge the value of the large area of uncleared natural A5 vegetation in the Georges River catchment and work towards the preservation of these areas MA9 4. Use appropriate modelling tools such as MUSIC and/or the A1, Botany Bay CAPER DSS and the LGRSI decision support tool to A2, evaluate and design WSUD projects A6 3 Most of the possible Management Options that address water quality focus on new development controls, or maintenance and compliance of existing measures. MA3 is the only Option that specifically targets a reduction in existing pollution levels, through retrofit of treatment measures, which is part of the primary goal of this Coastal Zone Management Plan. As such, MA3 is included as a Best Management Option despite the likely high costs and expected land management difficulties (i.e. two ‘red lights’ in the rapid cost assessment, refer Appendix E). K:\N2099_GEORGES_RIVER_EMP\DOCS\R.S1197.001.01.FINAL_PLAN.DOCX 444 POSSIBLE OPTIONS TO ADDRESS AIMS AND OBJECTIVES 57 Aim A: Water Quality: To optimise water quality within the Georges River Objectives Estuary and its tributaries addressed and Priority H M L MA16. All Councils have an appropriate pollution incident response A1, protocol in place A4 A6 MA18. Develop and implement site specific water quality A1 I1 monitoring programs that are in partnership with, or at least consistent with, the estuary-wide River Health monitoring program Other Options MA11. Ensure Sydney Water continues to improve the sewage A3, overflow performance of the sewer systems throughout the A6 catchment MA13. Engage the community in the planning, design and A1, implementation for WSUD projects to help foster a sense of A2, ownership and a willingness to support in the longer term A6 MA14. Educate private sewer owners on their obligations for A5 maintenance and appropriate approaches to maintaining private sewers MA17. Councils to liaise and engage with other authorities and A1, agencies to progress WSUD in their operations including small scale A2, projects (e.g. RTA, Rail Corp) A6 Table 5-3 BMOs, NBOs and Other Options (Aquatic & Riparian Habitat) Aim B: Aquatic and Riparian Habitat: To protect, enhance and restore aquatic Objectives habitats and foreshore vegetation addressed and Priority H M L Best Management MB4. Identify locations for and undertake targeted rehabilitation, B3 Options creation and enhancement of estuarine wetland communities (saltmarsh, mangroves, seagrass) and adjacent riparian vegetation MB7. Support the establishment and continuation of local B2, bushcare/landcare and other groups to assist with revegetation B3 works on both public and private lands MB8. Utilise the Riverkeeper Program rubbish removal and bush B3 B1 regeneration teams to provide rubbish removal, weed control, bush regeneration and ongoing site maintenance to complement and