Volume Two 13. Port Zone 13.3.17.5. Wheeled or tracked machinery must not be operated in, or within 8m of, a river (except an ephemeral river or intermittently flowing river, when not flowing) Significant Wetland or the coastal marine area. 13.3.17.6. Batters must designed and constructed to ensure they are stable and remain effective after completion of the excavation. 13.3.17.7. Water control measures and sediment control measures must be designed, constructed and maintained in an area disturbed by excavation, such that the area is stable and the measures remain effective after completion of the excavation. The diameter of a culvert used to drain excavation must not be less than 300mm. 13.3.17.8. Excavation must not be within a Level 2 Flood Hazard Area. 13.3.18. Filling of land with clean fill. 13.3.18.1. The filling must not use commercial clean fill. 13.3.18.2. No filling in excess of 1000m must occur within any 24 month period. 3 13.3.18.3. Filling in excess of 500m per Computer Register must not occur within the 3 Marlborough Sounds Outstanding Natural Feature and Landscape within any 12 month period. 13.3.18.4. Fill must not be placed over woody vegetation on any land with a slope greater than 10°. 13.3.18.5. A filled area must be designed, constructed and maintained to ensure it is stable and remains effective after completion of filling. 13.3.18.6. Water control measures and sediment control measures must be designed, constructed and maintained in a fill area, such that the area is stable and the measures remain effective after completion of the filling. The diameter of a culvert used to drain a fill area must not be less than 300mm. 13.3.18.7. When filling has been completed, the filled area must be covered with at least 200mm of soil, and sown down with a suitable vegetative cover or other means to achieve a rapid vegetative. 13.3.18.8. Filling must not be in, or within 8m of, a river (except an ephemeral river when not flowing), a Significant Wetland or the coastal marine area. 13.3.18.9. Filling must not be within a Level 2 Flood Hazard Area. 13.3.19. Non-indigenous vegetation clearance. 13.3.19.1. Where clearance is by mechanical means, blading or root-raking by a bulldozer must not be used on slopes greater than 20°. 13.3.19.2. Vegetation must not be removed by fire or mechanical means within 8m of a river (except an ephemeral river, or intermittently flowing river when not flowing) or the coastal marine area. 13.3.19.3. The vegetation clearance must not be in, or within 8m of, a Significant Wetland. 13.3.19.4. All trees must be felled away from a river (except an ephemeral river, or intermittently flowing river when not flowing), Significant Wetland or the coastal marine area. 13.3.19.5. No tree or log may be dragged through the bed of a river (except an ephemeral river or intermittently flowing river, when not flowing), or a Significant Wetland or the coastal marine area. 13 – 11