Marlborough Sounds Resource Management Plan c) Sand or any other material used for abrasive blasting shall contain not more than 5% free silica on a dry weight basis; d) The operator shall so far as is practicable collect all debris and used blasting materials; e) All collected debris and used blasting materials shall be removed from the site daily and when operations are completed; f) There shall be no discharge of water spray beyond the boundary of the subject property, or beyond 50 metres of the discharge when sited on public land; and g) There shall be no visible discharge of dust beyond the boundary of the subject property, or beyond 50 metres of the discharge when sited on public land. 32.1.5.2 Effluent Disposal 32.1.5.2.1 General Provision must be made for the satisfactory disposal of all effluent and greywater in accordance with the requirements of the Plan. The requirements of the Plan are deemed to have been met where: • All effluent and greywater is connected to a public system expressly designed for this purpose; or • Any discharge of effluent into or onto land is a Discretionary Activity on land located within any Hazard Area identified on the Planning Maps and/or Hazards Register. 32.1.5.2.2 Trade Waste Disposal Conditions • Collection of waste on-site shall be in suitable containers that are either covered or located in a roofed area; and • Process waste shall not be discharged into stormwater. Note: For hazardous waste refer to Rule 32.1.4 32.1.5.3 Stormwater Discharges (Point source and Non Point Source) The discharge of point source stormwater, to land or natural water, by gravity and/or; the discharge of non point source stormwater, to land or any natural water; shall be a Permitted Activity provided that; a) The discharge shall not cause any significant erosion or inundation of land; b) The discharge shall not have any significant adverse effect on water quality; c) The discharge shall not have any adverse effect on any fisheries, wildlife habitats or recreational values of any waterbody; and d) The discharge does not contain stormwater from an area where hazardous substances are stored unless: 32 - 12