B-5 – Area 5 - Assessment of Environmental Effects 185 The associated policies focus on the use of the legislative mechanisms in the RMA to secure esplanade reserves and strips on subdivisions,256 and the HDC negotiating to either have the land vested or set aside on a voluntary basis.257 While the establishment of the GOP will result in the removal of a headwater gully, enhancement planting of a length of riparian stream margins is proposed. Described in detail by Boffa (2022a) this planting will contribute towards enhancement of the natural character, indigenous biodiversity, water quality and aquatic and adjoining terrestrial habitats. The activities proposed within Area 5 will also not result in any new impediments to public access along the Ohinemuri River or the Gladstone Wetland. The surrounding land is currently held in private ownership. No change is proposed to this access arrangement.258 The management and associated access to the margins of waterbodies within Area 5 will therefore contribute towards the outcomes described in Objectives 1 and 2 of Section 7.3 of the HDP being achieved. 7.6.2.5 Hazardous Substances and Contaminated Land Section 7.7 of the HDP relates to the management of hazardous substances and contaminated land. The objectives and policies relating to contaminated land specify the following: avoid, remedy or mitigate the risk of adverse effect to the environment and the community associated with the transportation of hazardous substances;259 minimise the risk of adverse effects to the environment and the community associated with the storage of hazardous substances;260 minimise the risk of adverse effects on the environment and community from contaminated land and the disposal of hazardous substances;261 and ensure contaminated land is managed in such a way as to avoid use or development that presents a risk to human health, safety or the environment, or ensure that land is managed so that any potential risk is at acceptable levels for the proposed land use and the environment.262 256 Policy 1(a)(ii), Section 7.3, Hauraki District Plan. 257 Policy 1(a)(v), Section 7.3, Hauraki District Plan. 258 Objective 2, Section 7.3, Hauraki District Plan. 259 Objective 1 and associated policies, Section 7.7, Hauraki District Plan. 260 Objective 2 and associated policies, Section 7.7, Hauraki District Plan. 261 Objective 3 and associated policies, Section 7.7, Hauraki District Plan. 262 Policy 3(a)(ii), Section 7.7, Hauraki District Plan.
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