Chapter 9 - Coastal Marine b) Cultural and iwi values; c) Heritage and amenity values; d) Landscape, seascape and aesthetic values; e) Marine habitats and sustainability; f) Natural character of the coastal environment; g) Navigational safety; h) Other activities, including those on land; i) Public access to and along the coast; j) Public health and safety; k) Recreation values; and l) Water quality. Policy 1.2 Any reclamation drainage or impoundment within the coastal marine area shall be considered inappropriate unless it can be demonstrated that: a) An alternative method or land-based site (above MHWS) for the activity for which the reclamation, drainage or impoundment is to be used is not practicable; b) Efficient use of coastal space is made by using the minimum area of the coastal marine area necessary for the reclamation, drainage or impoundment; and c) The finished appearance of the reclaimed or drained area, or the impoundment, including its size, shape and the materials used is as far as practicable compatible with the environment in which it is located. Policy 1.3 Ensure that material used to create and form any reclamation or impoundment does not include contaminants which have the potential to adversely affect the coastal marine area. Policy 1.4 Recognise the necessity of maintenance dredging, in particular, that associated with: continuing the use of existing coastal structures, port and marina activities, and for river control. Policy 1.5 Any proposal for dredging within the coastal marine area shall demonstrate: a) The necessity for dredging; b) An appropriate disposal method; and c) The measures undertaken to avoid, remedy or mitigate adverse effects on marine habitats, recreation values, adjacent activities or users, water quality and other adverse environmental effects. Policy 1.6 Promote land-based disposal of dredging spoil. Policy 1.7 Recognising (by way of controlled activity status) the importance of renewing the majority of existing marine farms authorised by applications made before 1 August 1996 while mitigating adverse effects on the environment by way of conditions. 9 - 17