Volume Two 20. Open Space 4 Zone 20.3.7.2. The total volume of material being burned must not exceed 2m. 3 20.3.8. Discharge of contaminants to air from the burning of solid fuel in a small scale solid fuel burning appliance, except an enclosed pellet burner. 20.3.8.1. The appliance must comply with the emission, operational and other requirements of Appendix 8 – Schedule 1. 20.3.8.2. The appliance must comply with the stack requirements of Appendix 8 – Schedule 2. 20.3.8.3. The appliance must only burn fuels approved for use in the appliance. 20.3.8.4. The appliance must be operated so that all reasonable steps are taken to minimise the amount of smoke discharged. 20.3.9. Discharge of contaminants to air from the burning of solid fuel in an enclosed pellet burner. 20.3.9.1. The burner must comply with the stack requirements of Appendix 8 – Schedule 2. 20.3.9.2. The burner must only burn fuels approved for use in the burner. 20.4. Restricted Discretionary Activities Application must be made for a Restricted Discretionary Activity for the following: [R] 20.4.1. Excavation in excess of 1000m on any land with a slope greater than 20° within 3 any 24 month period. Matters over which the Council has restricted its discretion: 20.4.1.1. The effects on water quality and soil conservation from the excavation. 20.5. Discretionary Activities Application must be made for a Discretionary Activity for the following: [R, D] 20.5.1. Any activity provided for as a Permitted Activity or Restricted Discretionary Activity that does not meet the applicable standards. [D] 20.5.2. Skifield facility, including a ski lift or a building. [D] 20.5.3. Any use of land not provided for as a Permitted Activity or Restricted Discretionary Activity, or limited as a Prohibited Activity. [R] 20.5.4. Any discharge of contaminants into or onto land, or to air not provided for as a Permitted Activity or limited as a Prohibited Activity. 20 – 5