8. Rural Living Zone Volume Two 8.3.9.3. There must be no planting within the Wairau Dry Hills Landscape. 8.3.9.4. Only indigenous species must be planted in, or within 8m of, a Significant Wetland. 8.3.10. Removal of vegetation. 8.3.10.1. Within, or within 8m of, a Significant Wetland, Pest Plants identified in Appendix 25 and willow, blackberry, broom, gorse and old man’s beard must be the only vegetation removed, and plants must only be cleared by non- mechanical means. 8.3.11. Excavation or filling. 8.3.11.1. Excavation or filling must not occur within 8m of the landward toe of a stopbank and the depth of any excavation must not exceed 20% of the distance between the landward toe of the stopbank and the excavation. 8.3.11.2. Excavation or filling must not be within a Level 2 Flood Hazard Area. 8.3.11.3. The maximum volume of excavation must not exceed 50m per Computer 3 Register must occur within any 12 month period, unless the excavation is to establish the foundation for a building permitted in this zone. 8.3.11.4. The maximum volume of filling must not exceed 50m per Computer 3 Register must occur within any 12 month period, unless the filling is to establish the foundation for a building permitted in this zone. 8.3.11.5. No excavation or filling must occur on any land with a slope greater than 10°. 8.3.11.6. Excavation must not intercept groundwater or cause any ponding of surface run-off. 8.3.11.7. Excavation or filling must not occur in, or within 8m of, a river, Significant Wetland, drainage channel or Drainage Channel Network. 8.3.11.8. Batters must be designed and constructed to ensure they are stable and remain effective after completion of the excavation. 8.3.11.9. A filled area must be designed, constructed and maintained to ensure it is stable and remains effective after completion of filling. 8.3.11.10. Water control measures and sediment control measures must be designed, constructed and maintained in all areas disturbed by any excavation or filling, such that the areas are stable and the measures remain effective after completion of the excavation or filling. The diameter of a culvert used to drain excavation or fill areas must not be less than 300mm. 8.3.11.11. Excavation or filling must not occur on a slope greater than 7.5° if the activity is within a Soil Sensitive Area identified as loess soils. 8.3.11.12. For staged excavation or filling, any part of the excavation or filled area that has not been further developed within 12 months must be re-vegetated. 8.3.11.13. Where the excavation or filling results in areas of exposed soil, those areas must be re-vegetated within 12 months of the completion of the excavation or filling. 8.3.11.14. The fill must not contain any: (a) hazardous substances; (b) combustible or organic materials; (c) any other contaminant subject to chemical or biological breakdown; 8 – 8