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Manly Lagoon Dredging Project - Manly Council - NSW Government

Manly Lagoon Dredging Project - Manly Council - NSW Government

Manly Lagoon Dredging Project - Manly Council - NSW Government

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<strong>Manly</strong> <strong>Lagoon</strong> <strong>Dredging</strong> <strong>Project</strong> – Review of Environmental FactorsPrepared for <strong>Manly</strong> and Warringah <strong>Council</strong>sParameter(s)Visual Amenity andAestheticsHazards and WasteMitigation Measureslocated in the lagoon.› Machinery and unnecessary signage/fencing should be stored in a sitecompound;› Any rubbish/waste resulting from the works should be removed off-site toappropriate recycling or disposal facilities on a regular basis;› The contractor will not be permitted to stockpile or store equipment ormaterial not required for immediate use outside of the compound area tominimise the visual impacts of the works;› Following completion of the works all areas which have been disturbed bythe works, including Nolan Reserve and the lagoon banks should berestored via revegetation with species native to the area as soon aspracticable. It is noted that the use of a cutter suction dredge will minimisebank disturbance, since material will be conveyed to shore via a floatingpipe; and› Geobag fabric should be dark or natural in colour to reduce the visualimpact during storage along the Nolan Reserve.› A Hazards Management Plan and a Waste Management Plan for the sitewould be required prior to the commencement of proposed works;› An Incident Management Plan for the works should be prepared prior to thecommencement of proposed works and should define and detail all stopwork triggers;› The works site should be fenced off and secured from public access;› The weather should be monitored daily during proposed works and alloperations should cease during periods of heavy rainfall to avoid sedimentand erosion issues on site and within the lagoon;› Safe pedestrian movement and access to the lagoon foreshore around theworks area should be facilitated during works, with temporary walkways ifnecessary;› All workers should be made aware of hazards before they enter the site;› If contaminated sediments are encountered during the proposed works thematerial will need to be classified according to the Waste ClassificationGuidelines (DECC, 2009d) and DECCW should be consulted. Thisdocument must be updated by the selected contractor;› The Acid Sulfate Soils Management Plan (Appendix E), prepared inaccordance with the Acid Sulfate Soils Manual (ASSMAC, 1998), containsprovisions and required actions to neutralise acid sulfate soils during theproposed works. This document must be followed by the contractor;› The Hazards Management Plan will detail methods for cleanup of accidentalspills on site. The clean up method employed for spills of ULTIMER 7757must be in accordance with the Product Safety Data Sheet (Appendix I);and› Extracted sediments will be dewatered to reduce the volume of solidmaterial to be removed from site.2 July 2010 Cardno (<strong>NSW</strong>/ACT) Pty Ltd 121H:\Doc\2010\Reports.2010\Rep2580v4.doc

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