Manly Lagoon Dredging Project - Manly Council - NSW Government

Manly Lagoon Dredging Project – Review of Environmental FactorsPrepared for Manly and Warringah CouncilsNo initial response to the consultation was received from the Metropolitan Local AboriginalLand Council; however follow up phone calls and correspondence was undertaken inAugust/September 2009 regarding Aboriginal Land Claim and Native Title issues withinManly Lagoon (Section 5.5.1).No formal response to the consultation was received from Warringah Council. However, as aproject partner, Warringah Council have dedicated significant resources to the project.Specific input from Warringah Council has included: Identifying flooding related impacts (considered in Section 5.3); Input into the licensing and approvals process; Consideration of how to minimise environmental impact through appropriate projectdesign; and Undertaking flora and fauna surveys and completing Seven Part Test assessmentsfor identified threatened species which may potentially occur in the works area.No response to the consultation was received from DWE (now DECCW), the RTA or theCMA.At the time of the consultation described above, the proposed disposal method of the dredgespoil was disposal at a suitable landfill site, and for insitu drainage from floating barges to theLagoon. Following this initial consultation, the proposal was changed to allow for dewatering,and rather than assuming disposal of the dredge spoil to landfill, allow for potential beneficialreuse of the material. However, if the treated material is not suitable for reuse, then disposalto landfill will take place as the contingency measure.Trial dredging, dewatering and testing (Section 3.3) of a limited amount of sedimentoccurred in July and August 2009. The results indicated that reuse was feasible and that theoverburden water could be returned to the Lagoon without identifiable environmental harm.In light of these changes, and the positive results from the dredging trials, Cardno advisedthe stakeholders of the changes and the associated practical implications on 24 September2009. Table 3.2 identifies additional comments received from the LPMA, and where theseare addressed in the REF.I&I NSW, LPMA, Manly Council and Cardno met on 14 October 2009 to discuss some of thepractical implications of the changes to the proposal, including, at the request of I&I NSW,the criteria for defining first and second flush water. The meeting, and further discussion on15 October 2009 satisfactorily resolved the outstanding issues.All stakeholders, with the exception of the RTA and Warringah Council, were formerlycontacted by telephone on 9 October 2009. All consultees noted the update to the scope ofthe dredging project, however only LPMA provided formal further comments forconsideration in the REF as detailed in Table 3.2.The communication teams in both Manly and Warringah Councils will develop a strategy fora Community Consultation Plan, as a means to inform the community of the project andprovide ongoing information to the public for the duration of the project.2 July 2010 Cardno (NSW/ACT) Pty Ltd 23H:\Doc\2010\Reports.2010\Rep2580v4.doc