Manly Lagoon Dredging Project - Manly Council - NSW Government

Manly Lagoon Dredging Project – Review of Environmental FactorsPrepared for Manly and Warringah CouncilsManly Lagoon is unzoned under the current Warringah LEP 2000. The Warringah LEP 2000also identifies Manly Lagoon as a Class 1 area on its Acid Sulfate Soil Hazard Map; henceany works to be carried out in this area require consent under Part 5 of the EP&A Act 1979from Warringah Council. The dredging works also require consent from Warringah Councilas dredging works are likely to involve earthworks over 200mm below in depth and/or anarea greater than 200m 2 ; hence do not meet criteria for exempt development in theWarringah LEP 2000. These consent requirements will be met as Warringah Council is oneof the determining authorities for the proposal.Warringah LEP 2000 states that consent must not be granted to proposed works identified inany Acid Sulfate Soils class that disturb more than one tonne of soil or that are likely to lowerthe watertable, unless the consent authority has considered an Acid Sulfate SoilsManagement Plan (ASSMP) prepared in accordance with the Acid Sulfate Soils Manual(ASSMAC, 1998). As the proposed works require the removal of more than one tonne ofsediment, an ASSMP is required. An ASSMP has been prepared and is presented inAppendix E.4.11 Summary of Permits, Approvals and LicencesA list of the full range of requirements for approvals, licenses and permits associated withthe identified legislation relevant to the proposed dredging of Manly Lagoon is provided inTable 4.1. As the proposal does not require consent under Part 4 of the EP&A Act by virtueof the provisions under SEPP (Infrastructure), it is therefore subject to environmental impactassessment under Part 5 of the EP&A Act.Table 4.1: Summary of Requirements for Approvals, Licences and PermitsLegislation /RequirementAuthorityRelevance to theProposalApproval / Licence / OtherRequirementsContaminatedLandManagement Act1997DECCWRelevant to anycontaminated land, whichpresents ‘a significant risk ofharm’.Report to DECCW ifcontaminated land isidentified. Addiscombe Road,Former Landfill site is currentlyidentified with an EPA Notice(Section 5.1 and AppendixD).No approval/licence required,but need to be aware whendesigning and undertakingdredging activities.EnvironmentalPlanning andAssessment Act1979 (EP&A Act)DoP/CouncilsApproval from DoP isrequired to encourageproper management ofnatural and artificialresources, and promotingthe environment and theeconomic and social welfareof the community.No consent under Part 4required. Determination underPart 5 required by LPMA, andManly and WarringahCouncils.2 July 2010 Cardno (NSW/ACT) Pty Ltd 37H:\Doc\2010\Reports.2010\Rep2580v4.doc