19. Open Space 3 Zone Volume Two 19.3.6.11. There must be no filling in excess of 500mper Computer Register located 3 within the Bryant Range, Upper Pelorus Area, Richmond Range Conservation Estate and Red Hills Range Outstanding Natural Feature and Landscape within any 12 month period. 19.3.6.12. There must be no filling in excess of 500mper Computer Register located 3 within the Mt Duncan, Mount Rutland and Mount Cullen Outstanding Natural Feature and Landscape within any 12 month period. 19.3.6.13. There must be no filling in excess of 500m per Computer Register located 3 within the Limestone Coastline Outstanding Natural Feature and Landscape within any 12 month period. 19.3.6.14. There must be no filling in excess of 500mper Computer Register located 3 within the Marlborough Sounds Outstanding Natural Feature and Landscape within any 12 month period. 19.3.6.15. The filling must not cause any conspicuous change in the colour or visual clarity of any flowing river after reasonable mixing, or the water in a Significant Wetland, lake or coastal marine area measured as follows: (a) hue must not be changed by more than 10 points on the Munsell scale. (b) the natural clarity must not be conspicuously changed due to sediment or sediment laden discharge originating from the filling site. (c) the change in reflectance must be <50%. 19.3.7. Geotechnical bore drilling for the purposes of investigation of sub-surface conditions. 19.3.7.1. The bore must be drilled by a Recognised Professional. 19.3.7.2. A copy of the bore log, including a grid reference identifying the bore location, must be supplied to the Council in a suitable electronic format within 20 working days of drilling of the bore. 19.3.7.3. On completion of the geotechnical investigation, the bore must be sealed or capped to prevent any potential contamination of groundwater. 19.3.8. Farming. 19.3.8.1. The farming must not include a dairy farm or pig farm established after 9 June 2016. 19.3.9. Discharge of contaminants to air arising from the burning of materials for any of the following purposes: (a) training people to put out fires; (b) creating special smoke and fire effects for the purposes of producing films; (c) fireworks display or other temporary event involving the use of fireworks. 19.3.9.1. The Council must be notified at least 5 working days prior to the burning activity commencing. 19.3.9.2. If the property is located within the Blenheim Airshed, the discharge must not occur during the months of May, June, July or August. 19.3.9.3. Any discharges for purposes of training people to put out fires must take place under the control of the NZ Fire Service or any other nationally recognised agency authorised to undertake firefighting research or firefighting activities. 19 – 8