21. Floodway Zone Volume Two 21.3.8.11. During the period of 1 September to 31 December in any year no removal must occur within 50m of nesting birds on the riverbed. 21.3.8.12. The amount of gravel removed must not exceed, on an annual basis, the amount specified in the MDC Marlborough Rivers Gravel Extraction Strategy. 21.3.9. Gravel and sediment removal within a wet part of a riverbed. 21.3.9.1. The removal must be necessary for maintaining the flood carrying capacity of the floodway, or for the stability of the riverbank in the vicinity. 21.3.9.2. Gravel or sediment removal must not be carried out more than once in any 12 month period in any floodway. 21.3.9.3. Excavators must operate from the riverbank where possible. 21.3.9.4. The removal must not be carried out in water greater than 2m average depth. 21.3.9.5. The gravel and sediment removed must be retained on adjacent river banks for a period not less than 12 hours to provide opportunity for fish and animals to re-enter the river. 21.3.9.6. The removal must not be carried out in a tidal reach between 1 February and 30 April, and 1 August and 30 November in any year. 21.3.9.7. The removal must not limit fish passage. 21.3.9.8. For a river with a greater than 10m width of flowing water, not more than half the width of the riverbed must be disturbed at any time. 21.3.9.9. The extraction of gravel and sediment must be limited to the hours of 7.30 am - 5.00 pm from Monday to Saturday (inclusive). No gravel must be extracted on a public holiday or between 24 December and 3 January (inclusive). 21.3.9.10. Any discharge of sediment into water associated with the removal must not, after reasonable mixing, cause a change in colour of the receiving water of more than 5 Munsell units or a decrease in clarity of more than 20% for more than 8 hours in any 24 hour period and more than 40 hours in total in any calendar month. 21.3.9.11. Allowable road access routes to floodways must be controlled by the Council’s permit system to ensure road safety and maintenance standards as set out in the MDC Marlborough Rivers Gravel Extraction Strategy are met. 21.3.9.12. During the period of 1 September to 31 December in any year no removal must occur within 50m of nesting birds on the riverbed. 21.3.9.13. The amount of gravel removed from any floodway must not exceed, on an annual basis, the amount specified in the MDC Marlborough Rivers Gravel Extraction Strategy. 21.3.10. Gravel and sediment stockpiling within a dry part of a riverbed. 21.3.10.1. The gravel and sediment stockpiled must be limited to that removed from nearby parts of the same floodway. 21.3.10.2. Gravel and sediment must not be stockpiled within a floodway for a period exceeding 24 hours, except as allowed for in 21.3.10.3. 21.3.10.3. Gravel and sediment may be stockpiled for periods longer than 24 hours where the stockpiling will not impair the flood capacity of the river. 21 – 6