19. Open Space 3 Zone Volume Two 19.3.19.7. The total cumulative nitrogen (N) loading from all discharges on the areal extent of land to be used for the discharge must not exceed 200 kg N/hectare/year (excluding N from direct animal inputs). 19.3.19.8. The pH of the liquid waste must range between 4.5 and 9 immediately prior to discharge. 19.3.19.9. Records of pH levels must be kept and available upon request by the Council. 19.3.20. Disposal of farm rubbish into a pit. 19.3.20.1. Only biodegradable material (except offal or a carcass) must be disposed of to a farm rubbish pit. 19.3.20.2. Only farm rubbish sourced from the same property must be disposed of to a farm rubbish pit. 19.3.20.3. The farm rubbish pit must not be sited within a Groundwater Protection Area. 19.3.20.4. The farm rubbish pit must not be located within: (a) 50m of a bore unless the bore intercepts the confined layer of Riverlands FMU or the confined layer of the Wairau Aquifer FMU; (b) 20m of a river, lake, Significant Wetland, drainage channel or Drainage Channel Network; (c) 50m of any boundary of the property or a dwelling. 19.3.20.5. Surface run-off must not enter the pit. 19.3.20.6. When any pit is filled to within 0.5m of the original land surface, or is no longer used, the contents must be covered with soil to a depth of at least 0.5m. 19.3.21. Disposal of offal or a carcass into an offal pit. 19.3.21.1. The offal or carcass must be from pastoral agriculture except intensive farming undertaken on the same property. 19.3.21.2. Only offal and carcasses may be disposed of to an offal pit. 19.3.21.3. The disposal must not occur into or onto a Soil Sensitive Area identified as loess soils. 19.3.21.4. The offal pit must not be located within: (a) 50m of a bore unless the bore intercepts the confined layer of Riverlands FMU or the confined layer of the Wairau Aquifer FMU; (b) 20m of a river, lake, Significant Wetland, drainage channel or Drainage Channel Network; (c) 50m of any boundary of the property or a dwelling. 19.3.21.5. The offal pit must be located above the natural ground water level at all times. 19.3.21.6. The offal pit must be completely covered by an impermeable material at all times or otherwise designed to prevent the entry of surface runoff when not in use. 19 – 12